{"gene":"SATB1","run_date":"2026-06-10T07:46:29","timeline":{"discoveries":[{"year":1994,"finding":"SATB1 binds DNA at matrix attachment regions (MARs) in the minor groove, making virtually no contact with DNA bases. A 150-amino-acid polypeptide constitutes the binding domain, and a novel DNA-binding motif requires the concomitant presence of both N- and C-terminal ends of the binding domain for full activity.","method":"Deletion mutagenesis, DNA-binding assays, cloning of mouse SATB1 cDNA","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 1 / Strong — in vitro DNA binding assays with systematic mutagenesis of the binding domain, replicated across multiple deletion constructs","pmids":["8114718"],"is_preprint":false},{"year":1999,"finding":"SATB1 physically interacts with the homeoprotein CDP (CCAAT displacement protein) through its DNA-binding domain; this interaction is mutual (CDP interacts with three of four SATB1 DNA-binding domains), prevents each protein from binding DNA, and functionally antagonizes SATB1-mediated repression of the MMTV promoter in T cells.","method":"GST pull-down, reciprocal co-immunoprecipitation from nuclear extracts, far-Western blotting, gel retardation assay, transient-transfection reporter assay","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 1–2 / Strong — reciprocal co-IP, GST pulldown, far-Western, and functional reporter assay all in the same study","pmids":["10373541"],"is_preprint":false},{"year":2000,"finding":"SATB1-null mice show severe defects in T-cell development with multiple gene deregulation, demonstrating that SATB1 acts as a global orchestrator of temporal and spatial gene expression during T-cell development, including repression of IL-2Rα and IL-7Rα at inappropriate stages.","method":"SATB1-null mouse generation, flow cytometry, gene expression profiling of 589 genes","journal":"Genes & development","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic knockout with defined cellular and molecular phenotype, multiple gene expression readouts","pmids":["10716941"],"is_preprint":false},{"year":2005,"finding":"Nuclear matrix binding by SATB1 is required for transcriptional repression: a nuclear matrix targeting sequence (NMTS) spanning amino acids 224–278 is needed for SATB1 localization to the nuclear matrix, and deletion of the NMTS abrogates SATB1-mediated repression of integrated MMTV proviruses without affecting DNA binding.","method":"SATB1 deletion constructs, nuclear fractionation, retroviral reporter gene assay, GFP fusion localization","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1–2 / Moderate — domain deletion series combined with functional reporter assay and subcellular fractionation, single lab","pmids":["15851481"],"is_preprint":false},{"year":2006,"finding":"On TH2 cell activation, SATB1 folds the 200-kb TH2 cytokine locus (Il5, Il4, Il13) into densely looped chromatin anchored at SATB1 binding sites, recruits Brg1, GATA3, STAT6, c-Maf, and RNA polymerase II across the locus, and is required for cytokine gene expression; RNAi-mediated knockdown of SATB1 abolishes both loop compaction and cytokine induction.","method":"RNAi knockdown, chromosome conformation capture/looping assays, ChIP for histone modifications and transcription factors, RNA analysis","journal":"Nature genetics","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple orthogonal methods (ChIP, looping assays, RNAi functional readout) in a single focused study, widely replicated concept","pmids":["17057718"],"is_preprint":false},{"year":2008,"finding":"SATB1 is sumoylated at lysine-744 by SUMO-1 with Ubc9 and PIAS family members acting as E2 and E3 enzymes; sumoylation targets SATB1 to promyelocytic leukemia nuclear bodies and is required for subsequent caspase cleavage of SATB1.","method":"Yeast two-hybrid screen, overexpression of SUMO/PIAS in Jurkat cells, site-directed mutagenesis (K744R), in-frame SUMO fusion rescue, immunofluorescence to PML bodies","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1–2 / Moderate — mutagenesis, rescue by SUMO fusion, and localization with functional caspase-cleavage readout in one study","pmids":["18408014"],"is_preprint":false},{"year":2008,"finding":"SATB1 forms a repressor complex with CtBP1 via the PVPLS motif in its PDZ-like domain; PKC-mediated or ionomycin/LiCl-induced acetylation of SATB1 disrupts CtBP1 interaction, reduces CtBP1 and HDAC1 occupancy at SATB1 binding sites (IL-2 and c-Myc promoters), and derepresses target gene expression.","method":"Co-immunoprecipitation, ChIP, site-directed mutagenesis of PVPLS motif, gene expression profiling with SATB1/CtBP1 siRNA knockdown","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 1–2 / Moderate — reciprocal co-IP, mutagenesis of interaction motif, ChIP, and functional gene expression readout in one study","pmids":["19103759"],"is_preprint":false},{"year":2009,"finding":"SATB1 is an essential silencing factor for Xist-mediated gene silencing: loss of SATB1 in lymphoma cells abolishes Xist silencing function; ectopic expression of SATB1 or SATB2 in embryonic fibroblasts (which normally cannot support X inactivation initiation) enables gene silencing by Xist.","method":"SATB1 loss-of-function in lymphoma model, viral SATB1/SATB2 expression in fibroblasts, Xist localization by FISH, gene silencing assays","journal":"Developmental cell","confidence":"High","confidence_rationale":"Tier 2 / Moderate — loss-of-function and gain-of-function in two different cellular models with defined molecular phenotype","pmids":["19386260"],"is_preprint":false},{"year":2009,"finding":"Satb1-null ES cells show impaired differentiation and elevated expression of pluripotency factors (Nanog, Klf4, Tbx3); Satb1 and Satb2 both bind the Nanog locus in vivo and have opposing effects, as Satb1/Satb2 double knockout cells show near-normal differentiation.","method":"Satb1−/− ES cell analysis, ChIP for Satb1 binding to Nanog locus, gene expression profiling, cell fusion reprogramming assay","journal":"Genes & development","confidence":"High","confidence_rationale":"Tier 2 / Moderate — ChIP confirming direct Nanog locus binding, knockout phenotype, and epistasis with Satb2 in the same study","pmids":["19933152"],"is_preprint":false},{"year":2010,"finding":"SATB1 interacts with β-catenin and recruits it (along with p300 acetyltransferase) to SATB1 genomic binding sites including the GATA3 promoter; this interaction promotes TH2 lineage commitment and is Wnt-signaling dependent. Wnt inhibition (Dkk1) or β-catenin knockdown reduces TH2 cytokine expression.","method":"Co-immunoprecipitation, ChIP, gene expression profiling, siRNA knockdown of SATB1 and β-catenin, Wnt inhibitor treatment","journal":"PLoS biology","confidence":"High","confidence_rationale":"Tier 2 / Moderate — Co-IP, ChIP, and functional knockdown with gene expression readout in a single study","pmids":["20126258"],"is_preprint":false},{"year":2010,"finding":"SATB1 is phosphorylated by protein kinase C (PKC) at serine 185 in vivo; this phosphorylation enhances SATB1 association with HDAC1 corepressor and promotes transcriptional repression at MAR-linked target genes.","method":"In vitro kinase assay, in vivo immunoprecipitation after PKC activation, PKC inhibitor treatment, MAR-linked reporter assay","journal":"Methods in molecular biology","confidence":"Medium","confidence_rationale":"Tier 1–2 / Weak — in vitro phosphorylation and functional reporter assay described but from a methods/review chapter with limited new primary data reported","pmids":["20694677"],"is_preprint":false},{"year":2011,"finding":"Satb1 binds genomic loci of multiple immediate-early genes (Fos, Fosb, Egr1, Egr2, Arc, Bdnf) in cortical neurons; Satb1-null mice show altered timing and levels of IEG expression during postnatal cortical development and reduced dendritic spine density in cortical pyramidal neurons.","method":"ChIP for Satb1 at IEG loci, analysis of Satb1-null mouse cortical neurons, dendritic spine density quantification, organotypic culture stimulation","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 2 / Moderate — ChIP demonstrating direct genomic binding, knockout with defined neuronal phenotype and gene expression readout","pmids":["22064485"],"is_preprint":false},{"year":2011,"finding":"SATB1 deficiency in Sézary cells causes apoptosis resistance by failing to activate FasL/CD95L transcription; retroviral restoration of SATB1 in Sézary cells triggers spontaneous cell death, sensitizes cells to activation-induced cell death, activates caspase-8 and caspase-3, and increases endogenous FasL expression.","method":"Retroviral gene transduction, apoptosis assays, caspase activation analysis, mRNA/protein quantification","journal":"Blood","confidence":"Medium","confidence_rationale":"Tier 2 / Weak — clean gain-of-function with defined apoptotic pathway readout, single lab","pmids":["21270445"],"is_preprint":false},{"year":2013,"finding":"Satb1 directs hematopoietic stem cell (HSC) differentiation toward the lymphoid lineage: Satb1-deficient HSCs fail lymphopoiesis in culture and in vivo reconstitution; forced Satb1 expression in HSCs and ES cells robustly promotes lymphocyte differentiation. Reduced Satb1 in aged HSCs correlates with compromised lymphopoietic potential restored by forced Satb1 expression.","method":"Satb1-knockout mouse, bone marrow transplantation, retroviral Satb1 transduction of HSCs and ES cells, gene expression profiling","journal":"Immunity","confidence":"High","confidence_rationale":"Tier 2 / Strong — both loss-of-function and gain-of-function in vivo, with transplantation rescue experiments and gene expression profiling","pmids":["23791645"],"is_preprint":false},{"year":2013,"finding":"SATB1 directly regulates p21 transcription in a p53-independent manner in CD30+ lymphoma cells; SATB1 silencing causes G1 cell cycle arrest via p21 activation, demonstrated by ChIP, luciferase assays, and mutational analysis of the p21 promoter.","method":"ChIP, luciferase reporter assay, mutational analysis of p21 promoter, siRNA knockdown with cell cycle analysis","journal":"Blood","confidence":"High","confidence_rationale":"Tier 1–2 / Moderate — direct promoter binding confirmed by ChIP and luciferase/mutational analysis, combined with functional cell cycle readout","pmids":["24747435"],"is_preprint":false},{"year":2015,"finding":"SATB1 is required for formation of ON dendritic arbors in ooDSGCs of mouse retina; it regulates expression of homophilic adhesion molecule Contactin 5 (Cntn5), which together with co-receptor Caspr4 mediates branch-specific homophilic interactions with interneurons required for ON dendritic fasciculation.","method":"Satb1 mutant mouse analysis, electrophysiology, in situ hybridization/immunofluorescence, Cntn5 conditional knockout, morphological quantification","journal":"Neuron","confidence":"High","confidence_rationale":"Tier 2 / Moderate — genetic epistasis via Cntn5 conditional KO partially phenocopying Satb1 mutant, combined with electrophysiological and morphological readouts","pmids":["28781169"],"is_preprint":false},{"year":2015,"finding":"HuD RNA-binding protein promotes neuronal differentiation of neural stem/progenitor cells by stabilizing SATB1 mRNA; SATB1 in turn transcriptionally activates HuD, forming a positive feedback loop, with NeuroD1 as a direct downstream transcriptional target of SATB1.","method":"RNAi knockdown, overexpression rescue experiments, mRNA stability assay, promoter-binding assay","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"Medium","confidence_rationale":"Tier 2–3 / Moderate — epistasis via rescue, mRNA stabilization assay, and transcriptional activation assay, single lab","pmids":["26305964"],"is_preprint":false},{"year":2015,"finding":"SATB1 binds the Notch1 promoter in dendritic cells, activating Notch1 expression; Notch1 then drives RBPJ occupancy of the H2-Ab1 (MHC II) promoter to activate MHC class II transcription. Satb1 conditional knockout impairs conventional DC differentiation.","method":"Conditional knockout mouse, ChIP for SATB1 at Notch1 promoter, RBPJ ChIP at H2-Ab1 promoter, DC differentiation assays","journal":"Cell reports","confidence":"High","confidence_rationale":"Tier 2 / Moderate — ChIP confirming direct promoter binding plus conditional KO phenotype with pathway epistasis","pmids":["26876172"],"is_preprint":false},{"year":2016,"finding":"Satb1-dependent activation of Treg-specific super-enhancers (Treg-SEs) in Treg precursor cells is required for expression of Foxp3 and other Treg signature genes; T cell-specific Satb1 deficiency impairs Treg-SE activation and causes autoimmunity due to Treg deficiency.","method":"T cell-specific Satb1 conditional knockout, H3K27ac ChIP-seq to identify super-enhancers, gene expression analysis, autoimmunity phenotyping","journal":"Nature immunology","confidence":"High","confidence_rationale":"Tier 2 / Moderate — conditional KO with ChIP-seq super-enhancer mapping and defined immune phenotype","pmids":["27992401"],"is_preprint":false},{"year":2017,"finding":"Satb1 recruits the NuRD (nucleosome remodeling deacetylase) complex to Pdcd1 (PD-1) regulatory regions to epigenetically repress PD-1 expression in T cells; tumor-derived TGF-β suppresses Satb1 expression via Smad binding to the Satb1 promoter, and Smad proteins compete with the Satb1-NuRD complex for binding to Pdcd1 enhancers.","method":"Satb1-deficient T cells, ChIP for NuRD complex at Pdcd1 locus, Smad binding assay at Satb1 promoter and Pdcd1 enhancers, competition assay","journal":"Immunity","confidence":"High","confidence_rationale":"Tier 2 / Moderate — ChIP showing NuRD recruitment, Smad competition at regulatory regions, and Satb1 KO with 40-fold PD-1 increase as functional readout","pmids":["28099864"],"is_preprint":false},{"year":2017,"finding":"In post-selection thymocytes, SATB1 activates lineage-specifying genes (ThPOK, Runx3, CD4, CD8, Foxp3) by regulating their enhancers; SATB1-deficient thymocytes are misdirected into inappropriate T lineages and fail to generate NKT and Treg subsets.","method":"SATB1-deficient thymocyte analysis, ChIP/enhancer activity assays at lineage-specifying loci, flow cytometry lineage tracing","journal":"Cell reports","confidence":"High","confidence_rationale":"Tier 2 / Moderate — conditional KO with defined lineage phenotypes and enhancer-level molecular mechanism","pmids":["28494867"],"is_preprint":false},{"year":2019,"finding":"Loss of SATB1 in post-mitotic dopaminergic neurons activates a cellular senescence transcriptional program and SATB1 directly represses expression of the pro-senescence factor p21 in dopaminergic neurons.","method":"SATB1 knockout in human iPSC-derived dopaminergic neurons and in mice, ChIP for SATB1 at p21 locus, senescence marker analysis","journal":"Cell stem cell","confidence":"High","confidence_rationale":"Tier 2 / Moderate — ChIP demonstrating direct p21 repression, with in vitro and in vivo knockout models showing senescence phenotype","pmids":["31543366"],"is_preprint":false},{"year":2019,"finding":"Satb1 preferentially targets nucleosome-dense genomic regions; the homeodomain of Satb1 is dispensable for high-affinity binding but essential for binding specificity; Satb1-DNA interactions are mechanosensitive, with increased negative torsional stress enhancing Satb1 binding. Satb1 stabilizes base-unpairing regions (BURs) against melting.","method":"Single-molecule live-cell imaging, deep sequencing (SELEX/ChIP-seq), DNA torsional stress manipulation, homeodomain deletion mutants","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 1 / Moderate — live-cell single-molecule imaging combined with deep sequencing and domain mutagenesis, multiple orthogonal methods","pmids":["31324780"],"is_preprint":false},{"year":2019,"finding":"SATB1 is required for secretory ameloblast cell polarity and directional amelogenin secretion; Satb1-null ameloblasts lose Tomes' processes, inter-ameloblastic adhesion, and apical F-actin architecture. SATB1 controls expression of Eps8 (an actin-regulator), and Eps8 loss at the apical surface underlies the polarity defect.","method":"Satb1-null mouse analysis, microarray for SATB1 targets, immunofluorescence for polarity markers and Eps8, amelogenin secretion assay","journal":"BMC biology","confidence":"High","confidence_rationale":"Tier 2 / Moderate — knockout with defined cellular polarity phenotype, identified Eps8 as molecular mediator, replicated in small intestinal epithelium","pmids":["31830989"],"is_preprint":false},{"year":2019,"finding":"USP47 interacts with SATB1 and mediates its deubiquitination and stabilization; SMURF2 is an E3 ubiquitin ligase that promotes SATB1 degradation by increasing its ubiquitination; USP47 negatively regulates SMURF2, thereby controlling SATB1 protein levels and transcriptional activity.","method":"Co-immunoprecipitation, ubiquitination assays, USP47 knockdown/knockout, SMURF2 overexpression/knockdown, in vivo colon cancer model","journal":"Cancer letters","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — reciprocal Co-IP and ubiquitination assays establishing E3 ligase and deubiquitinase, single lab","pmids":["30742943"],"is_preprint":false},{"year":2019,"finding":"SATB1 directly represses SPARC expression in K562 cells by binding to a specific 17 bp DNA sequence in the third intron of the SPARC gene, as confirmed by ChIP with anti-SATB1 antibody; siRNA knockdown of SATB1 reduces SPARC expression.","method":"SATB1 overexpression, microarray, siRNA knockdown, ChIP with anti-SATB1, bioinformatics binding site identification","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 2 / Weak — ChIP confirming direct intronic binding, supported by both overexpression and siRNA knockdown, single lab","pmids":["17343824"],"is_preprint":false},{"year":2020,"finding":"N6-methyladenine (N6-mA) DNA modification antagonizes SATB1 function: N6-mA deposited at SIDD (stress-induced DNA duplex destabilization) regions reduces SATB1-SIDD interactions by >500-fold in vitro, prevents SATB1 chromatin binding in vivo, and restricts euchromatin spread during trophoblast development.","method":"In vitro SATB1-DNA binding assay with N6-mA-modified substrates, ChIP for SATB1 in trophoblast stem cells with N6-mA manipulation, Hi-C chromatin domain analysis","journal":"Nature","confidence":"High","confidence_rationale":"Tier 1 / Strong — reconstituted in vitro binding assay showing >500-fold reduction plus in vivo ChIP validation with functional chromatin domain phenotype","pmids":["32669713"],"is_preprint":false},{"year":2021,"finding":"Missense variants in the CUT1 and CUT2 DNA-binding domains of SATB1 result in stronger chromatin binding and increased transcriptional repression associated with severe neurodevelopmental phenotype; haploinsufficiency variants cause milder phenotype; premature truncation variants that escape NMD are transcriptionally active but mislocalized.","method":"Functional assays on 42 individuals with SATB1 variants, chromatin binding assays, transcriptional repression assays, localization studies","journal":"American journal of human genetics","confidence":"High","confidence_rationale":"Tier 2 / Moderate — multiple variant classes tested with functional assays (binding, repression, localization) across 42 individuals providing robust genotype-mechanism correlation","pmids":["33513338"],"is_preprint":false},{"year":2022,"finding":"SATB1 organizes T cell 3D genome architecture by constraining chromatin interactions around CTCF co-occupied sites; SATB1 depletion increases chromatin contacts among SATB1/CTCF co-occupied sites; SATB1 is required for retention of CTCF in the nuclear matrix but does not affect CTCF occupancy at chromatin.","method":"Hi-C, SATB1 depletion in human and murine T cells, ChIP-seq for CTCF, nuclear matrix fractionation","journal":"Cell reports","confidence":"High","confidence_rationale":"Tier 2 / Moderate — Hi-C, ChIP-seq, and nuclear fractionation in both human and mouse T cells","pmids":["37000624"],"is_preprint":false},{"year":2022,"finding":"SATB1 shapes the 3D enhancer network of developing T cells: SATB1 is enriched at anchors of promoter-enhancer loops; SATB1 conditional KO reduces interactions among super-enhancers and between super-enhancers and promoters, impairing expression of master regulator genes including Bcl6 and the TCR locus.","method":"H3K27ac HiChIP, Hi-C, T cell-specific Satb1 conditional knockout, gene expression analysis","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Moderate — HiChIP and Hi-C in conditional KO mouse, multiple orthogonal chromatin conformation methods","pmids":["36376298"],"is_preprint":false},{"year":2022,"finding":"SATB1 controls DP thymocyte identity by globally regulating super-enhancer activity: in Satb1-deleted thymocytes, interactions among super-enhancers and between super-enhancers and promoters driving DP-specific genes are specifically decreased, redirecting cell identity.","method":"Single-cell RNA-seq, Hi-C, Satb1 conditional knockout in thymocytes, super-enhancer mapping","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Moderate — Hi-C and scRNA-seq in conditional KO, two orthogonal chromatin/transcriptomic methods","pmids":["36138028"],"is_preprint":false},{"year":2022,"finding":"TGF-β-mediated repression of SATB1 promotes Tfh cell differentiation: Smad proteins downstream of TGF-β bind the Satb1 promoter to repress SATB1 expression, relieving SATB1-dependent repression of Icos and Pdcd1, which collectively drives Tfh differentiation and inhibits T follicular regulatory cell skewing.","method":"CD4-Cre Satb1 conditional knockout, TGF-β treatment of human T cells, Smad binding assay at Satb1 promoter, Icos/CXCL13 functional analysis","journal":"Immunity","confidence":"High","confidence_rationale":"Tier 2 / Moderate — conditional KO, Smad-promoter binding assay, and human T cell gain/loss-of-function experiments","pmids":["35021053"],"is_preprint":false},{"year":2005,"finding":"During apoptosis, SATB1 undergoes caspase-3-mediated cleavage in Jurkat cells, forming a special 3D network distribution in early apoptosis before nuclear architecture collapse; cleavage is apoptosis-specific.","method":"Immunostaining, Western blot, caspase-3 inhibitor treatment, apoptosis induction in Jurkat cells","journal":"Cell biology international","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — immunostaining and Western blot showing caspase-3-dependent cleavage, replicated across multiple apoptotic stimuli but single lab","pmids":["16377216"],"is_preprint":false},{"year":2017,"finding":"SATB1 promotes Schwann cell viability and migration by binding the SHIP1 gene promoter region and recruiting HDAC1 to repress SHIP1 expression, thereby activating the PI3K/AKT signaling pathway.","method":"ChIP assay for SATB1 at SHIP1 promoter, HDAC1 co-IP, Satb1 knockout/overexpression, SHIP1 rescue experiment, PI3K/AKT pathway analysis","journal":"European review for medical and pharmacological sciences","confidence":"Medium","confidence_rationale":"Tier 2–3 / Weak — ChIP confirming SHIP1 promoter binding with HDAC1 recruitment, but rescue experiment and pathway analysis from single lab","pmids":["30024617"],"is_preprint":false},{"year":2024,"finding":"SATB1, miR-22-3p, and GBA form a single regulatory pathway in dopaminergic neurons: SATB1 transcriptionally represses MIR22HG; loss of SATB1 derepresses miR-22-3p, which reduces GBA expression, causing glucocerebroside accumulation that impairs lysosomal and mitochondrial function and induces cellular senescence.","method":"Human and murine neuronal lines, iPSC-derived dopaminergic neurons, mouse models; SATB1 KO/overexpression, miR-22-3p manipulation, GBA activity assays, senescence markers","journal":"Aging cell","confidence":"High","confidence_rationale":"Tier 2 / Moderate — pathway dissected by stepwise KO/overexpression at each node with functional readouts in multiple model systems","pmids":["38303548"],"is_preprint":false}],"current_model":"SATB1 is a nuclear genome organizer and transcription factor that binds matrix attachment regions (MARs)/base-unpairing regions in the minor groove via a novel bipartite DNA-binding domain, tethers these sites to the nuclear matrix through an NMTS (aa 224–278), and folds large chromatin domains into loops to coordinate expression of gene clusters; it recruits corepressor complexes (HDAC1, CtBP1, NuRD) or coactivators (Brg1, p300, β-catenin) depending on post-translational state (PKC phosphorylation at S185 promotes repression; acetylation switches to activation), is regulated by sumoylation at K744 and ubiquitination (SMURF2 as E3 ligase, USP47 as deubiquitinase), and its chromatin binding is antagonized by N6-methyladenine DNA modification at SIDD sequences; in T cells it is essential for TH2 cytokine locus looping, Treg and DP thymocyte super-enhancer activation, PD-1 repression, and 3D genome organization around CTCF co-occupied sites, while in neurons it regulates immediate-early gene timing, dendritic spine density via a HuD→SATB1→NeuroD1 feedback loop, and dopaminergic neuron senescence through direct p21 repression and a SATB1→miR-22-3p→GBA pathway."},"narrative":{"mechanistic_narrative":"SATB1 is a nuclear genome organizer and transcription factor that binds matrix attachment regions (MARs) in the DNA minor groove via a novel bipartite DNA-binding domain requiring both N- and C-terminal ends for full activity, making virtually no contact with the bases [PMID:8114718]. It preferentially targets nucleosome-dense base-unpairing regions (BURs), stabilizes them against melting, binds in a mechanosensitive manner enhanced by negative torsional stress, and uses its homeodomain for binding specificity rather than affinity [PMID:31324780]. By tethering its bound sites to the nuclear matrix, an activity required for transcriptional repression, SATB1 folds large chromatin domains into loops that coordinate gene clusters [PMID:15851481, PMID:17057718]. In T cells it functions as a global orchestrator of development, looping the 200-kb TH2 cytokine locus and recruiting transcription factors and RNA polymerase II to drive cytokine expression [PMID:10716941, PMID:17057718], and it organizes 3D genome architecture by constraining chromatin interactions around CTCF co-occupied sites and shaping super-enhancer/promoter loop networks that specify Treg, DP thymocyte, and lineage identity [PMID:27992401, PMID:37000624, PMID:36376298, PMID:36138028]. SATB1 output is set by its post-translational state and partners: it recruits corepressor machinery (CtBP1, HDAC1, NuRD) through defined motifs, with PKC phosphorylation at S185 promoting repression and acetylation disrupting CtBP1 binding to switch toward activation [PMID:19103759, PMID:20694677, PMID:28099864], while β-catenin/p300 recruitment supports activation [PMID:20126258]. Its abundance and activity are tuned by sumoylation at K744 [PMID:18408014], a USP47/SMURF2 ubiquitination axis [PMID:30742943], and by N6-methyladenine DNA modification at SIDD sequences that antagonizes chromatin binding [PMID:32669713]. In neurons SATB1 regulates immediate-early gene timing and dendritic architecture [PMID:22064485], and represses the pro-senescence factor p21 and a MIR22HG/miR-22-3p/GBA pathway in dopaminergic neurons [PMID:31543366, PMID:38303548]. Missense variants in its CUT1/CUT2 DNA-binding domains cause a severe neurodevelopmental disorder through gain of chromatin binding and repression, while haploinsufficiency yields a milder phenotype [PMID:33513338].","teleology":[{"year":1994,"claim":"Established the molecular basis of SATB1-DNA recognition, showing it reads DNA structure rather than sequence through a novel bipartite binding domain.","evidence":"Deletion mutagenesis and in vitro DNA-binding assays on cloned mouse SATB1","pmids":["8114718"],"confidence":"High","gaps":["No structure of the bipartite domain bound to DNA","Did not address in vivo chromatin targets"]},{"year":1999,"claim":"Showed SATB1 DNA binding can be antagonized by a protein partner, introducing the concept of regulated occupancy at MARs.","evidence":"Reciprocal co-IP, GST pulldown, far-Western, and reporter assays for SATB1-CDP interaction in T cells","pmids":["10373541"],"confidence":"High","gaps":["Physiological contexts where CDP antagonism operates not defined","Stoichiometry of competition unknown"]},{"year":2000,"claim":"Defined SATB1 as a global, in vivo orchestrator of temporal and spatial gene expression rather than a single-locus factor.","evidence":"SATB1-null mouse with flow cytometry and 589-gene expression profiling of T-cell development","pmids":["10716941"],"confidence":"High","gaps":["Direct vs indirect targets not separated","Mechanism linking binding to gene deregulation not resolved here"]},{"year":2005,"claim":"Separated nuclear matrix tethering from DNA binding, establishing matrix anchoring as the functional requirement for SATB1-mediated repression.","evidence":"NMTS deletion constructs with nuclear fractionation, GFP localization, and retroviral MMTV reporter assays","pmids":["15851481"],"confidence":"High","gaps":["Matrix protein partners of the NMTS unidentified","Single lab, single reporter system"]},{"year":2006,"claim":"Demonstrated that SATB1 physically loops a large gene cluster into transcriptionally competent chromatin, providing the paradigm for its genome-folding function.","evidence":"RNAi knockdown, chromosome conformation/looping assays, and ChIP at the TH2 cytokine locus","pmids":["17057718"],"confidence":"High","gaps":["How looping mechanically follows from matrix anchoring not resolved","Order of recruitment of co-factors undefined"]},{"year":2008,"claim":"Identified post-translational switches controlling SATB1 output: corepressor recruitment via a PVPLS motif and its reversal by acetylation, plus sumoylation directing SATB1 to PML bodies.","evidence":"Co-IP, motif mutagenesis, ChIP, and gene profiling for CtBP1; yeast two-hybrid, K744R mutagenesis and SUMO-fusion rescue for sumoylation","pmids":["19103759","18408014"],"confidence":"High","gaps":["Acetyltransferase/deacetylase enzymes for the activation switch not fully defined","Functional consequence of PML targeting beyond caspase cleavage unclear"]},{"year":2009,"claim":"Extended SATB1 function to large-scale silencing and stem-cell fate, showing it is required for Xist-mediated silencing and regulates pluripotency loci.","evidence":"Loss- and gain-of-function in lymphoma and fibroblast models with Xist FISH; Satb1-null ES cells with ChIP at the Nanog locus and Satb2 epistasis","pmids":["19386260","19933152"],"confidence":"High","gaps":["Mechanistic link between SATB1 and Xist silencing machinery unresolved","Basis of opposing SATB1/SATB2 effects at shared loci not defined"]},{"year":2010,"claim":"Connected SATB1 to upstream signaling, with PKC phosphorylation enhancing repression and Wnt/β-catenin recruitment promoting activation and TH2 commitment.","evidence":"In vitro/in vivo kinase and reporter assays for S185; co-IP, ChIP, and Wnt-inhibitor/knockdown experiments for β-catenin/p300","pmids":["20694677","20126258"],"confidence":"Medium","gaps":["S185 finding from a methods chapter with limited primary data","Integration of phosphorylation and acetylation switches not jointly tested"]},{"year":2011,"claim":"Established direct SATB1 control of neuronal gene programs and morphology, broadening its role beyond the immune system.","evidence":"ChIP at immediate-early gene loci and dendritic spine quantification in Satb1-null cortical neurons","pmids":["22064485"],"confidence":"High","gaps":["How SATB1 sets IEG timing mechanistically unknown","Cofactors in neurons not identified"]},{"year":2013,"claim":"Showed SATB1 directs hematopoietic lineage choice and links its decline to aging-associated loss of lymphopoietic potential.","evidence":"Knockout, transplantation rescue, and retroviral overexpression in HSCs and ES cells with gene profiling","pmids":["23791645"],"confidence":"High","gaps":["Direct target genes mediating lymphoid bias not pinpointed","Cause of Satb1 decline in aged HSCs unknown"]},{"year":2013,"claim":"Demonstrated direct, p53-independent transcriptional repression of p21 by SATB1, coupling it to cell-cycle and apoptosis control in malignancy.","evidence":"ChIP, luciferase and promoter mutational analysis with siRNA and cell-cycle readouts in lymphoma cells; gain-of-function FasL activation in Sezary cells","pmids":["24747435","21270445"],"confidence":"Medium","gaps":["Cofactors at the p21 promoter not defined","FasL regulation shown in a single lymphoma model"]},{"year":2015,"claim":"Defined SATB1-driven transcriptional programs in neural differentiation and circuit assembly, including a HuD-SATB1 feedback loop and adhesion-molecule control of dendrite targeting.","evidence":"mRNA stability/promoter assays for HuD-SATB1-NeuroD1; Cntn5 conditional KO and electrophysiology in retinal ooDSGCs; ChIP/conditional KO for Notch1 in DCs","pmids":["26305964","28781169","26876172"],"confidence":"High","gaps":["Direct vs indirect target distinction incomplete for some loci","HuD feedback loop from single lab"]},{"year":2016,"claim":"Established SATB1 as an activator of cell-type-specific super-enhancers, mechanistically linking it to Treg and thymocyte lineage identity and tolerance.","evidence":"T-cell-specific conditional KO with H3K27ac ChIP-seq super-enhancer mapping and autoimmunity phenotyping; enhancer/lineage analysis in post-selection thymocytes","pmids":["27992401","28494867"],"confidence":"High","gaps":["How SATB1 selects which enhancers to activate vs repress unresolved","Direct enhancer-binding stoichiometry not quantified"]},{"year":2017,"claim":"Identified SATB1-NuRD recruitment as the repressive mechanism keeping PD-1 silenced, and revealed TGF-β/Smad suppression of SATB1 as an immune-evasion axis.","evidence":"ChIP for NuRD at Pdcd1, Smad-binding/competition assays, and Satb1-deficient T cells with 40-fold PD-1 increase","pmids":["28099864"],"confidence":"High","gaps":["Structural basis of Smad-SATB1 competition unknown","Generality across other immune checkpoints untested"]},{"year":2019,"claim":"Resolved the biophysics of SATB1 chromatin targeting and the mechanisms tuning its protein level and DNA access.","evidence":"Single-molecule imaging and deep sequencing of BUR binding; USP47/SMURF2 ubiquitination assays; in vitro and in vivo N6-mA antagonism with Hi-C; ChIP-based repression of SPARC","pmids":["31324780","30742943","32669713","17343824"],"confidence":"High","gaps":["Enzymes writing N6-mA at SIDD in mammals not fully defined","USP47/SMURF2 axis from single lab"]},{"year":2019,"claim":"Extended SATB1 to non-immune cellular architecture and to neuronal aging, repressing p21 to prevent dopaminergic-neuron senescence and controlling epithelial polarity via Eps8.","evidence":"ChIP at p21 in iPSC-derived neurons and mice; microarray and immunofluorescence in Satb1-null ameloblasts; ChIP/HDAC1 recruitment at SHIP1 in Schwann cells","pmids":["31543366","31830989","30024617"],"confidence":"High","gaps":["Mechanism linking p21 repression to senescence program incomplete","Schwann cell SHIP1 finding from a single lower-tier study"]},{"year":2021,"claim":"Linked SATB1 dysfunction causally to human neurodevelopmental disease and mapped variant class to molecular consequence.","evidence":"Functional chromatin-binding, repression, and localization assays across variants in 42 individuals","pmids":["33513338"],"confidence":"High","gaps":["How gain-of-binding variants produce neurodevelopmental pathology at the circuit level unknown","Tissue-specific consequences not modeled"]},{"year":2022,"claim":"Defined SATB1 as a constraint on 3D genome architecture acting through CTCF co-occupied sites and super-enhancer loop networks to enforce developmental identity.","evidence":"Hi-C, HiChIP, ChIP-seq, scRNA-seq, and nuclear matrix fractionation in human and murine T cells and conditional KO thymocytes; Smad-Satb1 promoter axis driving Tfh differentiation","pmids":["37000624","36376298","36138028","35021053"],"confidence":"High","gaps":["Whether SATB1 constrains vs facilitates contacts is context-dependent and mechanism unresolved","Direct molecular link between SATB1 and CTCF matrix retention unknown"]},{"year":2024,"claim":"Assembled a complete SATB1 regulatory pathway in dopaminergic neurons connecting transcriptional repression to lysosomal/mitochondrial dysfunction and senescence.","evidence":"Stepwise KO/overexpression at SATB1, miR-22-3p, and GBA nodes with activity and senescence readouts across multiple model systems","pmids":["38303548"],"confidence":"High","gaps":["Relative contribution of the p21 and GBA arms to senescence not weighted","Relevance to human Parkinsonian pathology not directly tested"]},{"year":null,"claim":"How SATB1 mechanically converts matrix anchoring and BUR binding into specific loop formation, and what determines its context-dependent switch between repression and activation genome-wide, remain unresolved.","evidence":"","pmids":[],"confidence":"High","gaps":["No structural model of SATB1 organizing a chromatin loop","Rules governing repressor vs activator complex recruitment at each site not defined","Integration of phosphorylation, acetylation, sumoylation, and ubiquitination into a single regulatory logic untested"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[0,22,26]},{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[2,4,14,19,21]},{"term_id":"GO:0003723","term_label":"RNA binding","supporting_discovery_ids":[16]},{"term_id":"GO:0060090","term_label":"molecular adaptor activity","supporting_discovery_ids":[3,4,28]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[3,5,27]},{"term_id":"GO:0000228","term_label":"nuclear chromosome","supporting_discovery_ids":[3,4,28]}],"pathway":[{"term_id":"R-HSA-4839726","term_label":"Chromatin organization","supporting_discovery_ids":[4,26,28,29,30]},{"term_id":"R-HSA-74160","term_label":"Gene expression (Transcription)","supporting_discovery_ids":[2,14,19,20,21]},{"term_id":"R-HSA-168256","term_label":"Immune System","supporting_discovery_ids":[2,18,19,20,31]},{"term_id":"R-HSA-1266738","term_label":"Developmental Biology","supporting_discovery_ids":[8,13,15,23]},{"term_id":"R-HSA-8953897","term_label":"Cellular responses to stimuli","supporting_discovery_ids":[21,34]}],"complexes":["NuRD complex (SATB1-recruited)","CtBP1/HDAC1 corepressor complex"],"partners":["CDP","CTBP1","HDAC1","CTCF","CTNNB1","EP300","USP47","SMURF2"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"Q01826","full_name":"DNA-binding protein SATB1","aliases":["Special AT-rich sequence-binding protein 1"],"length_aa":763,"mass_kda":86.0,"function":"Crucial silencing factor contributing to the initiation of X inactivation mediated by Xist RNA that occurs during embryogenesis and in lymphoma (By similarity). Binds to DNA at special AT-rich sequences, the consensus SATB1-binding sequence (CSBS), at nuclear matrix- or scaffold-associated regions. Thought to recognize the sugar-phosphate structure of double-stranded DNA. Transcriptional repressor controlling nuclear and viral gene expression in a phosphorylated and acetylated status-dependent manner, by binding to matrix attachment regions (MARs) of DNA and inducing a local chromatin-loop remodeling. Acts as a docking site for several chromatin remodeling enzymes (e.g. PML at the MHC-I locus) and also by recruiting corepressors (HDACs) or coactivators (HATs) directly to promoters and enhancers. Modulates genes that are essential in the maturation of the immune T-cell CD8SP from thymocytes. Required for the switching of fetal globin species, and beta- and gamma-globin genes regulation during erythroid differentiation. Plays a role in chromatin organization and nuclear architecture during apoptosis. Interacts with the unique region (UR) of cytomegalovirus (CMV). Alu-like motifs and SATB1-binding sites provide a unique chromatin context which seems preferentially targeted by the HIV-1 integration machinery. Moreover, HIV-1 Tat may overcome SATB1-mediated repression of IL2 and IL2RA (interleukin) in T-cells by binding to the same domain as HDAC1. Delineates specific epigenetic modifications at target gene loci, directly up-regulating metastasis-associated genes while down-regulating tumor-suppressor genes. Reprograms chromatin organization and the transcription profiles of breast tumors to promote growth and metastasis. Promotes neuronal differentiation of neural stem/progenitor cells in the adult subventricular zone, possibly by positively regulating the expression of NEUROD1 (By similarity)","subcellular_location":"Nucleus matrix; Nucleus, PML body","url":"https://www.uniprot.org/uniprotkb/Q01826/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/SATB1","classification":"Not Classified","n_dependent_lines":19,"n_total_lines":1208,"dependency_fraction":0.015728476821192054},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/SATB1","total_profiled":1310},"omim":[{"mim_id":"619229","title":"DEN HOED-DE BOER-VOISIN SYNDROME; DHDBV","url":"https://www.omim.org/entry/619229"},{"mim_id":"619228","title":"DEVELOPMENTAL DELAY WITH DYSMORPHIC FACIES AND DENTAL ANOMALIES; DEFDA","url":"https://www.omim.org/entry/619228"},{"mim_id":"615150","title":"MICRO RNA 191; MIR191","url":"https://www.omim.org/entry/615150"},{"mim_id":"608148","title":"SPECIAL AT-RICH SEQUENCE-BINDING PROTEIN 2; SATB2","url":"https://www.omim.org/entry/608148"},{"mim_id":"603368","title":"CYCLIN-DEPENDENT KINASE 6; CDK6","url":"https://www.omim.org/entry/603368"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Supported","locations":[{"location":"Nucleoplasm","reliability":"Supported"},{"location":"Nuclear bodies","reliability":"Additional"}],"tissue_specificity":"Group enriched","tissue_distribution":"Detected in all","driving_tissues":[{"tissue":"lymphoid tissue","ntpm":346.3},{"tissue":"skeletal muscle","ntpm":89.7}],"url":"https://www.proteinatlas.org/search/SATB1"},"hgnc":{"alias_symbol":[],"prev_symbol":[]},"alphafold":{"accession":"Q01826","domains":[{"cath_id":"3.10.20.710","chopping":"72-173","consensus_level":"high","plddt":85.5476,"start":72,"end":173},{"cath_id":"1.10.260.70","chopping":"177-250","consensus_level":"high","plddt":83.5481,"start":177,"end":250},{"cath_id":"1.10.260.40","chopping":"373-452","consensus_level":"high","plddt":89.6714,"start":373,"end":452},{"cath_id":"1.10.260.40","chopping":"496-571","consensus_level":"high","plddt":91.4038,"start":496,"end":571},{"cath_id":"1.10.10.60","chopping":"650-726","consensus_level":"high","plddt":78.6899,"start":650,"end":726}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q01826","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q01826-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q01826-F1-predicted_aligned_error_v6.png","plddt_mean":65.25},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=SATB1","jax_strain_url":"https://www.jax.org/strain/search?query=SATB1"},"sequence":{"accession":"Q01826","fasta_url":"https://rest.uniprot.org/uniprotkb/Q01826.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q01826/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q01826"}},"corpus_meta":[{"pmid":"17057718","id":"PMC_17057718","title":"SATB1 packages densely looped, transcriptionally active chromatin for coordinated expression of cytokine genes.","date":"2006","source":"Nature genetics","url":"https://pubmed.ncbi.nlm.nih.gov/17057718","citation_count":461,"is_preprint":false},{"pmid":"10716941","id":"PMC_10716941","title":"The MAR-binding protein SATB1 orchestrates temporal and spatial expression of multiple genes during T-cell development.","date":"2000","source":"Genes & development","url":"https://pubmed.ncbi.nlm.nih.gov/10716941","citation_count":308,"is_preprint":false},{"pmid":"27992401","id":"PMC_27992401","title":"Guidance of regulatory T cell development by Satb1-dependent super-enhancer establishment.","date":"2016","source":"Nature immunology","url":"https://pubmed.ncbi.nlm.nih.gov/27992401","citation_count":297,"is_preprint":false},{"pmid":"20126258","id":"PMC_20126258","title":"Global regulator SATB1 recruits beta-catenin and regulates T(H)2 differentiation in Wnt-dependent manner.","date":"2010","source":"PLoS biology","url":"https://pubmed.ncbi.nlm.nih.gov/20126258","citation_count":170,"is_preprint":false},{"pmid":"31543366","id":"PMC_31543366","title":"Loss of SATB1 Induces p21-Dependent Cellular Senescence in Post-mitotic Dopaminergic Neurons.","date":"2019","source":"Cell stem cell","url":"https://pubmed.ncbi.nlm.nih.gov/31543366","citation_count":159,"is_preprint":false},{"pmid":"19386260","id":"PMC_19386260","title":"SATB1 defines the developmental context for gene silencing by Xist in lymphoma and embryonic cells.","date":"2009","source":"Developmental cell","url":"https://pubmed.ncbi.nlm.nih.gov/19386260","citation_count":156,"is_preprint":false},{"pmid":"35021053","id":"PMC_35021053","title":"TGF-β-mediated silencing of genomic organizer SATB1 promotes Tfh cell differentiation and formation of intra-tumoral tertiary lymphoid structures.","date":"2022","source":"Immunity","url":"https://pubmed.ncbi.nlm.nih.gov/35021053","citation_count":153,"is_preprint":false},{"pmid":"17913490","id":"PMC_17913490","title":"The third dimension of gene regulation: organization of dynamic chromatin loopscape by SATB1.","date":"2007","source":"Current opinion in genetics & development","url":"https://pubmed.ncbi.nlm.nih.gov/17913490","citation_count":143,"is_preprint":false},{"pmid":"28099864","id":"PMC_28099864","title":"SATB1 Expression Governs Epigenetic Repression of PD-1 in Tumor-Reactive T Cells.","date":"2017","source":"Immunity","url":"https://pubmed.ncbi.nlm.nih.gov/28099864","citation_count":136,"is_preprint":false},{"pmid":"19933152","id":"PMC_19933152","title":"Satb1 and Satb2 regulate embryonic stem cell differentiation and Nanog expression.","date":"2009","source":"Genes & development","url":"https://pubmed.ncbi.nlm.nih.gov/19933152","citation_count":116,"is_preprint":false},{"pmid":"22771615","id":"PMC_22771615","title":"Genome organizing function of SATB1 in tumor progression.","date":"2012","source":"Seminars in cancer biology","url":"https://pubmed.ncbi.nlm.nih.gov/22771615","citation_count":102,"is_preprint":false},{"pmid":"8114718","id":"PMC_8114718","title":"A novel DNA-binding motif in the nuclear matrix attachment DNA-binding protein SATB1.","date":"1994","source":"Molecular and cellular biology","url":"https://pubmed.ncbi.nlm.nih.gov/8114718","citation_count":101,"is_preprint":false},{"pmid":"19642980","id":"PMC_19642980","title":"The mRNA expression of SATB1 and SATB2 in human breast cancer.","date":"2009","source":"Cancer cell international","url":"https://pubmed.ncbi.nlm.nih.gov/19642980","citation_count":94,"is_preprint":false},{"pmid":"34818056","id":"PMC_34818056","title":"A microRNA-21-mediated SATB1/S100A9/NF-κB axis promotes chronic obstructive pulmonary disease pathogenesis.","date":"2021","source":"Science translational medicine","url":"https://pubmed.ncbi.nlm.nih.gov/34818056","citation_count":92,"is_preprint":false},{"pmid":"28781169","id":"PMC_28781169","title":"Satb1 Regulates Contactin 5 to Pattern Dendrites of a Mammalian Retinal Ganglion Cell.","date":"2017","source":"Neuron","url":"https://pubmed.ncbi.nlm.nih.gov/28781169","citation_count":91,"is_preprint":false},{"pmid":"23791645","id":"PMC_23791645","title":"The Satb1 protein directs hematopoietic stem cell differentiation toward lymphoid lineages.","date":"2013","source":"Immunity","url":"https://pubmed.ncbi.nlm.nih.gov/23791645","citation_count":90,"is_preprint":false},{"pmid":"26876172","id":"PMC_26876172","title":"Satb1 Overexpression Drives Tumor-Promoting Activities in Cancer-Associated Dendritic Cells.","date":"2016","source":"Cell reports","url":"https://pubmed.ncbi.nlm.nih.gov/26876172","citation_count":90,"is_preprint":false},{"pmid":"22583549","id":"PMC_22583549","title":"Upregulation of SATB1 promotes tumor growth and metastasis in liver cancer.","date":"2012","source":"Liver international : official journal of the International Association for the Study of the Liver","url":"https://pubmed.ncbi.nlm.nih.gov/22583549","citation_count":90,"is_preprint":false},{"pmid":"20955458","id":"PMC_20955458","title":"Expression of SATB1 and heparanase in gastric cancer and its relationship to clinicopathologic features.","date":"2010","source":"APMIS : acta pathologica, microbiologica, et immunologica Scandinavica","url":"https://pubmed.ncbi.nlm.nih.gov/20955458","citation_count":85,"is_preprint":false},{"pmid":"28494867","id":"PMC_28494867","title":"Essential Roles of SATB1 in Specifying T Lymphocyte Subsets.","date":"2017","source":"Cell reports","url":"https://pubmed.ncbi.nlm.nih.gov/28494867","citation_count":83,"is_preprint":false},{"pmid":"26165840","id":"PMC_26165840","title":"Wnt/β-catenin signaling regulated SATB1 promotes colorectal cancer tumorigenesis and progression.","date":"2015","source":"Oncogene","url":"https://pubmed.ncbi.nlm.nih.gov/26165840","citation_count":75,"is_preprint":false},{"pmid":"30742943","id":"PMC_30742943","title":"Reversible regulation of SATB1 ubiquitination by USP47 and SMURF2 mediates colon cancer cell proliferation and tumor progression.","date":"2019","source":"Cancer letters","url":"https://pubmed.ncbi.nlm.nih.gov/30742943","citation_count":74,"is_preprint":false},{"pmid":"22064485","id":"PMC_22064485","title":"Satb1 ablation alters temporal expression of immediate early genes and reduces dendritic spine density during postnatal brain development.","date":"2011","source":"Molecular and cellular biology","url":"https://pubmed.ncbi.nlm.nih.gov/22064485","citation_count":72,"is_preprint":false},{"pmid":"20522714","id":"PMC_20522714","title":"SATB1 dictates expression of multiple genes including IL-5 involved in human T helper cell differentiation.","date":"2010","source":"Blood","url":"https://pubmed.ncbi.nlm.nih.gov/20522714","citation_count":66,"is_preprint":false},{"pmid":"32669713","id":"PMC_32669713","title":"N6-methyladenine in DNA antagonizes SATB1 in early development.","date":"2020","source":"Nature","url":"https://pubmed.ncbi.nlm.nih.gov/32669713","citation_count":59,"is_preprint":false},{"pmid":"19103759","id":"PMC_19103759","title":"Acetylation-dependent interaction of SATB1 and CtBP1 mediates transcriptional repression by SATB1.","date":"2008","source":"Molecular and cellular biology","url":"https://pubmed.ncbi.nlm.nih.gov/19103759","citation_count":59,"is_preprint":false},{"pmid":"21270445","id":"PMC_21270445","title":"Deficiency of SATB1 expression in Sezary cells causes apoptosis resistance by regulating FasL/CD95L transcription.","date":"2011","source":"Blood","url":"https://pubmed.ncbi.nlm.nih.gov/21270445","citation_count":59,"is_preprint":false},{"pmid":"26667169","id":"PMC_26667169","title":"SATB1 Plays a Critical Role in Establishment of Immune Tolerance.","date":"2015","source":"Journal of immunology (Baltimore, Md. : 1950)","url":"https://pubmed.ncbi.nlm.nih.gov/26667169","citation_count":55,"is_preprint":false},{"pmid":"22683624","id":"PMC_22683624","title":"MicroRNA-191 triggers keratinocytes senescence by SATB1 and CDK6 downregulation.","date":"2012","source":"Biochemical and biophysical research communications","url":"https://pubmed.ncbi.nlm.nih.gov/22683624","citation_count":53,"is_preprint":false},{"pmid":"22839214","id":"PMC_22839214","title":"Upregulation of SATB1 is associated with the development and progression of glioma.","date":"2012","source":"Journal of translational medicine","url":"https://pubmed.ncbi.nlm.nih.gov/22839214","citation_count":51,"is_preprint":false},{"pmid":"26305964","id":"PMC_26305964","title":"Positive feedback between RNA-binding protein HuD and transcription factor SATB1 promotes neurogenesis.","date":"2015","source":"Proceedings of the National Academy of Sciences of the United States of America","url":"https://pubmed.ncbi.nlm.nih.gov/26305964","citation_count":50,"is_preprint":false},{"pmid":"15851481","id":"PMC_15851481","title":"Nuclear matrix binding regulates SATB1-mediated transcriptional repression.","date":"2005","source":"The Journal of biological chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/15851481","citation_count":49,"is_preprint":false},{"pmid":"24971456","id":"PMC_24971456","title":"Expression of SATB1 promotes the growth and metastasis of colorectal cancer.","date":"2014","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/24971456","citation_count":45,"is_preprint":false},{"pmid":"23326301","id":"PMC_23326301","title":"SATB1 expression is associated with biologic behavior in colorectal carcinoma in vitro and in vivo.","date":"2013","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/23326301","citation_count":45,"is_preprint":false},{"pmid":"30710091","id":"PMC_30710091","title":"Satb1 regulates the effector program of encephalitogenic tissue Th17 cells in chronic inflammation.","date":"2019","source":"Nature communications","url":"https://pubmed.ncbi.nlm.nih.gov/30710091","citation_count":44,"is_preprint":false},{"pmid":"10373541","id":"PMC_10373541","title":"Homeoproteins CDP and SATB1 interact: potential for tissue-specific regulation.","date":"1999","source":"Molecular and cellular biology","url":"https://pubmed.ncbi.nlm.nih.gov/10373541","citation_count":44,"is_preprint":false},{"pmid":"31450715","id":"PMC_31450715","title":"The Role of SATB1 in Tumour Progression and Metastasis.","date":"2019","source":"International journal of molecular sciences","url":"https://pubmed.ncbi.nlm.nih.gov/31450715","citation_count":42,"is_preprint":false},{"pmid":"18408014","id":"PMC_18408014","title":"SUMO conjugation to the matrix attachment region-binding protein, special AT-rich sequence-binding protein-1 (SATB1), targets SATB1 to promyelocytic nuclear bodies where it undergoes caspase cleavage.","date":"2008","source":"The Journal of biological chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/18408014","citation_count":42,"is_preprint":false},{"pmid":"29751003","id":"PMC_29751003","title":"SATB1 in Malignant T Cells.","date":"2018","source":"The Journal of investigative dermatology","url":"https://pubmed.ncbi.nlm.nih.gov/29751003","citation_count":41,"is_preprint":false},{"pmid":"33513338","id":"PMC_33513338","title":"Mutation-specific pathophysiological mechanisms define different neurodevelopmental disorders associated with SATB1 dysfunction.","date":"2021","source":"American journal of human genetics","url":"https://pubmed.ncbi.nlm.nih.gov/33513338","citation_count":40,"is_preprint":false},{"pmid":"25543122","id":"PMC_25543122","title":"SATB1 and 2 in colorectal cancer.","date":"2014","source":"Carcinogenesis","url":"https://pubmed.ncbi.nlm.nih.gov/25543122","citation_count":40,"is_preprint":false},{"pmid":"27697109","id":"PMC_27697109","title":"Epigenetic regulation of long noncoding RNA UCA1 by SATB1 in breast cancer.","date":"2016","source":"BMB reports","url":"https://pubmed.ncbi.nlm.nih.gov/27697109","citation_count":40,"is_preprint":false},{"pmid":"25619478","id":"PMC_25619478","title":"miR-23a suppresses proliferation of osteosarcoma cells by targeting SATB1.","date":"2015","source":"Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine","url":"https://pubmed.ncbi.nlm.nih.gov/25619478","citation_count":40,"is_preprint":false},{"pmid":"25706386","id":"PMC_25706386","title":"SATB1 overexpression regulates the development and progression in bladder cancer through EMT.","date":"2015","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/25706386","citation_count":40,"is_preprint":false},{"pmid":"29772444","id":"PMC_29772444","title":"Functional relevance of SATB1 in immune regulation and tumorigenesis.","date":"2018","source":"Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie","url":"https://pubmed.ncbi.nlm.nih.gov/29772444","citation_count":39,"is_preprint":false},{"pmid":"30675243","id":"PMC_30675243","title":"miR-7-5p inhibits cell migration and invasion in glioblastoma through targeting SATB1.","date":"2018","source":"Oncology letters","url":"https://pubmed.ncbi.nlm.nih.gov/30675243","citation_count":38,"is_preprint":false},{"pmid":"36274077","id":"PMC_36274077","title":"SATB1/SLC7A11/HO-1 Axis Ameliorates Ferroptosis in Neuron Cells After Ischemic Stroke by Danhong Injection.","date":"2022","source":"Molecular neurobiology","url":"https://pubmed.ncbi.nlm.nih.gov/36274077","citation_count":36,"is_preprint":false},{"pmid":"22782115","id":"PMC_22782115","title":"SATB1-mediated functional packaging of chromatin into loops.","date":"2012","source":"Methods (San Diego, Calif.)","url":"https://pubmed.ncbi.nlm.nih.gov/22782115","citation_count":36,"is_preprint":false},{"pmid":"23379909","id":"PMC_23379909","title":"Silencing SATB1 with siRNA inhibits the proliferation and invasion of small cell lung cancer cells.","date":"2013","source":"Cancer cell international","url":"https://pubmed.ncbi.nlm.nih.gov/23379909","citation_count":36,"is_preprint":false},{"pmid":"23696028","id":"PMC_23696028","title":"Expression and biological roles of SATB1 in human bladder cancer.","date":"2013","source":"Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine","url":"https://pubmed.ncbi.nlm.nih.gov/23696028","citation_count":34,"is_preprint":false},{"pmid":"23428911","id":"PMC_23428911","title":"FoxP3, Helios, and SATB1: roles and relationships in regulatory T cells.","date":"2013","source":"International immunopharmacology","url":"https://pubmed.ncbi.nlm.nih.gov/23428911","citation_count":33,"is_preprint":false},{"pmid":"26701851","id":"PMC_26701851","title":"SATB1 and SATB2 play opposing roles in c-Myc expression and progression of colorectal cancer.","date":"2016","source":"Oncotarget","url":"https://pubmed.ncbi.nlm.nih.gov/26701851","citation_count":33,"is_preprint":false},{"pmid":"24747435","id":"PMC_24747435","title":"SATB1 overexpression promotes malignant T-cell proliferation in cutaneous CD30+ lymphoproliferative disease by repressing p21.","date":"2014","source":"Blood","url":"https://pubmed.ncbi.nlm.nih.gov/24747435","citation_count":33,"is_preprint":false},{"pmid":"22998183","id":"PMC_22998183","title":"Chromatin organizer SATB1 as a novel molecular target for cancer therapy.","date":"2012","source":"Current drug targets","url":"https://pubmed.ncbi.nlm.nih.gov/22998183","citation_count":32,"is_preprint":false},{"pmid":"36376298","id":"PMC_36376298","title":"The 3D enhancer network of the developing T cell genome is shaped by SATB1.","date":"2022","source":"Nature communications","url":"https://pubmed.ncbi.nlm.nih.gov/36376298","citation_count":32,"is_preprint":false},{"pmid":"31324780","id":"PMC_31324780","title":"Satb1 integrates DNA binding site geometry and torsional stress to differentially target nucleosome-dense regions.","date":"2019","source":"Nature communications","url":"https://pubmed.ncbi.nlm.nih.gov/31324780","citation_count":31,"is_preprint":false},{"pmid":"31830989","id":"PMC_31830989","title":"SATB1 establishes ameloblast cell polarity and regulates directional amelogenin secretion for enamel formation.","date":"2019","source":"BMC biology","url":"https://pubmed.ncbi.nlm.nih.gov/31830989","citation_count":28,"is_preprint":false},{"pmid":"36138028","id":"PMC_36138028","title":"Chromatin organizer SATB1 controls the cell identity of CD4+ CD8+ double-positive thymocytes by regulating the activity of super-enhancers.","date":"2022","source":"Nature communications","url":"https://pubmed.ncbi.nlm.nih.gov/36138028","citation_count":27,"is_preprint":false},{"pmid":"24260116","id":"PMC_24260116","title":"Plakoglobin represses SATB1 expression and decreases in vitro proliferation, migration and invasion.","date":"2013","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/24260116","citation_count":27,"is_preprint":false},{"pmid":"32090865","id":"PMC_32090865","title":"Unraveling the role of H3K4 trimethylation and lncRNA HOTAIR in SATB1 and DUSP4-dependent survival of virulent Mycobacterium tuberculosis in macrophages.","date":"2019","source":"Tuberculosis (Edinburgh, Scotland)","url":"https://pubmed.ncbi.nlm.nih.gov/32090865","citation_count":26,"is_preprint":false},{"pmid":"29898394","id":"PMC_29898394","title":"Variable SATB1 Levels Regulate Hematopoietic Stem Cell Heterogeneity with Distinct Lineage Fate.","date":"2018","source":"Cell reports","url":"https://pubmed.ncbi.nlm.nih.gov/29898394","citation_count":25,"is_preprint":false},{"pmid":"38303548","id":"PMC_38303548","title":"The SATB1-MIR22-GBA axis mediates glucocerebroside accumulation inducing a cellular senescence-like phenotype in dopaminergic neurons.","date":"2024","source":"Aging cell","url":"https://pubmed.ncbi.nlm.nih.gov/38303548","citation_count":24,"is_preprint":false},{"pmid":"31724324","id":"PMC_31724324","title":"MiR-191-5p inhibits lung adenocarcinoma by repressing SATB1 to inhibit Wnt pathway.","date":"2019","source":"Molecular genetics & genomic medicine","url":"https://pubmed.ncbi.nlm.nih.gov/31724324","citation_count":24,"is_preprint":false},{"pmid":"29306014","id":"PMC_29306014","title":"The Special AT-rich Sequence Binding Protein 1 (SATB1) and its role in solid tumors.","date":"2018","source":"Cancer letters","url":"https://pubmed.ncbi.nlm.nih.gov/29306014","citation_count":23,"is_preprint":false},{"pmid":"27161300","id":"PMC_27161300","title":"SATB1 is Correlated with Progression and Metastasis of Breast Cancers: A Meta-Analysis.","date":"2016","source":"Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology","url":"https://pubmed.ncbi.nlm.nih.gov/27161300","citation_count":23,"is_preprint":false},{"pmid":"27454343","id":"PMC_27454343","title":"Regulation of SATB1 during thymocyte development by TCR signaling.","date":"2016","source":"Molecular immunology","url":"https://pubmed.ncbi.nlm.nih.gov/27454343","citation_count":23,"is_preprint":false},{"pmid":"27044805","id":"PMC_27044805","title":"SATB1 promotes prostate cancer metastasis by the regulation of epithelial-mesenchymal transition.","date":"2016","source":"Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie","url":"https://pubmed.ncbi.nlm.nih.gov/27044805","citation_count":23,"is_preprint":false},{"pmid":"31147803","id":"PMC_31147803","title":"Hepatitis B Virus X Protein Induces SATB1 Expression Through Activation of ERK and p38MAPK Pathways to Suppress Anoikis.","date":"2019","source":"Digestive diseases and sciences","url":"https://pubmed.ncbi.nlm.nih.gov/31147803","citation_count":23,"is_preprint":false},{"pmid":"33356851","id":"PMC_33356851","title":"SATB1-mediated chromatin landscape in T cells.","date":"2020","source":"Nucleus (Austin, Tex.)","url":"https://pubmed.ncbi.nlm.nih.gov/33356851","citation_count":22,"is_preprint":false},{"pmid":"23079603","id":"PMC_23079603","title":"Satb1 and Satb2 are dispensable for X chromosome inactivation in mice.","date":"2012","source":"Developmental cell","url":"https://pubmed.ncbi.nlm.nih.gov/23079603","citation_count":22,"is_preprint":false},{"pmid":"28454436","id":"PMC_28454436","title":"SATB1 promotes epithelial-mesenchymal transition and metastasis in prostate cancer.","date":"2017","source":"Oncology letters","url":"https://pubmed.ncbi.nlm.nih.gov/28454436","citation_count":22,"is_preprint":false},{"pmid":"25874491","id":"PMC_25874491","title":"Divergent expression patterns of SATB1 mRNA and SATB1 protein in colorectal cancer and normal tissues.","date":"2015","source":"Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine","url":"https://pubmed.ncbi.nlm.nih.gov/25874491","citation_count":22,"is_preprint":false},{"pmid":"25956130","id":"PMC_25956130","title":"Expression of SATB1 and HER2 in breast cancer and the correlations with clinicopathologic characteristics.","date":"2015","source":"Diagnostic pathology","url":"https://pubmed.ncbi.nlm.nih.gov/25956130","citation_count":21,"is_preprint":false},{"pmid":"30720170","id":"PMC_30720170","title":"MiR-122-5p suppresses cell proliferation, migration and invasion by targeting SATB1 in nasopharyngeal carcinoma.","date":"2019","source":"European review for medical and pharmacological sciences","url":"https://pubmed.ncbi.nlm.nih.gov/30720170","citation_count":21,"is_preprint":false},{"pmid":"37000624","id":"PMC_37000624","title":"SATB1 regulates 3D genome architecture in T cells by constraining chromatin interactions surrounding CTCF-binding sites.","date":"2023","source":"Cell reports","url":"https://pubmed.ncbi.nlm.nih.gov/37000624","citation_count":20,"is_preprint":false},{"pmid":"28927120","id":"PMC_28927120","title":"Expression and clinical significance of SATB1 and TLR4 in breast cancer.","date":"2017","source":"Oncology letters","url":"https://pubmed.ncbi.nlm.nih.gov/28927120","citation_count":20,"is_preprint":false},{"pmid":"26084613","id":"PMC_26084613","title":"Oncolytic virus carrying shRNA targeting SATB1 inhibits prostate cancer growth and metastasis.","date":"2015","source":"Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine","url":"https://pubmed.ncbi.nlm.nih.gov/26084613","citation_count":20,"is_preprint":false},{"pmid":"34073140","id":"PMC_34073140","title":"Role of Satb1 and Satb2 Transcription Factors in the Glutamate Receptors Expression and Ca2+ Signaling in the Cortical Neurons In Vitro.","date":"2021","source":"International journal of molecular sciences","url":"https://pubmed.ncbi.nlm.nih.gov/34073140","citation_count":20,"is_preprint":false},{"pmid":"30024617","id":"PMC_30024617","title":"Satb1 promotes Schwann cell viability and migration via activation of PI3K/AKT pathway.","date":"2018","source":"European review for medical and pharmacological sciences","url":"https://pubmed.ncbi.nlm.nih.gov/30024617","citation_count":19,"is_preprint":false},{"pmid":"35310884","id":"PMC_35310884","title":"Expression of Circ_Satb1 Is Decreased in Mesial Temporal Lobe Epilepsy and Regulates Dendritic Spine Morphology.","date":"2022","source":"Frontiers in molecular neuroscience","url":"https://pubmed.ncbi.nlm.nih.gov/35310884","citation_count":19,"is_preprint":false},{"pmid":"28099863","id":"PMC_28099863","title":"Satb1: Restraining PD1 and T Cell Exhaustion.","date":"2017","source":"Immunity","url":"https://pubmed.ncbi.nlm.nih.gov/28099863","citation_count":19,"is_preprint":false},{"pmid":"26810818","id":"PMC_26810818","title":"SATB1 expression is correlated with β-catenin associated epithelial-mesenchymal transition in colorectal cancer.","date":"2016","source":"Cancer biology & therapy","url":"https://pubmed.ncbi.nlm.nih.gov/26810818","citation_count":19,"is_preprint":false},{"pmid":"30803026","id":"PMC_30803026","title":"Divergent SATB1 expression across human life span and tissue compartments.","date":"2019","source":"Immunology and cell biology","url":"https://pubmed.ncbi.nlm.nih.gov/30803026","citation_count":18,"is_preprint":false},{"pmid":"23251624","id":"PMC_23251624","title":"ATM suppresses SATB1-induced malignant progression in breast epithelial cells.","date":"2012","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/23251624","citation_count":18,"is_preprint":false},{"pmid":"26108419","id":"PMC_26108419","title":"SATB1 Promotes Pancreatic Cancer Growth and Invasion Depending on MYC Activation.","date":"2015","source":"Digestive diseases and sciences","url":"https://pubmed.ncbi.nlm.nih.gov/26108419","citation_count":18,"is_preprint":false},{"pmid":"23076250","id":"PMC_23076250","title":"Correlation between SATB1 and Bcl-2 expression in human glioblastoma multiforme.","date":"2012","source":"Molecular medicine reports","url":"https://pubmed.ncbi.nlm.nih.gov/23076250","citation_count":17,"is_preprint":false},{"pmid":"33390772","id":"PMC_33390772","title":"SATB1 Knockdown Inhibits Proliferation and Invasion and Decreases Chemoradiation Resistance in Nasopharyngeal Carcinoma Cells by Reversing EMT and Suppressing MMP-9.","date":"2021","source":"International journal of medical sciences","url":"https://pubmed.ncbi.nlm.nih.gov/33390772","citation_count":17,"is_preprint":false},{"pmid":"23516037","id":"PMC_23516037","title":"Silencing SATB1 inhibits proliferation of human osteosarcoma U2OS cells.","date":"2013","source":"Molecular and cellular biochemistry","url":"https://pubmed.ncbi.nlm.nih.gov/23516037","citation_count":17,"is_preprint":false},{"pmid":"16377216","id":"PMC_16377216","title":"The behavior of SATB1, a MAR-binding protein, in response to apoptosis stimulation.","date":"2005","source":"Cell biology international","url":"https://pubmed.ncbi.nlm.nih.gov/16377216","citation_count":17,"is_preprint":false},{"pmid":"27338049","id":"PMC_27338049","title":"Expression of SATB1 and HER2 in gastric cancer and its clinical significance.","date":"2016","source":"European review for medical and pharmacological sciences","url":"https://pubmed.ncbi.nlm.nih.gov/27338049","citation_count":16,"is_preprint":false},{"pmid":"28289135","id":"PMC_28289135","title":"The chromatin modifier Satb1 regulates cell fate through Fgf signalling in the early mouse embryo.","date":"2017","source":"Development (Cambridge, England)","url":"https://pubmed.ncbi.nlm.nih.gov/28289135","citation_count":16,"is_preprint":false},{"pmid":"23686316","id":"PMC_23686316","title":"SATB1 collaborates with loss of p16 in cellular transformation.","date":"2013","source":"Oncogene","url":"https://pubmed.ncbi.nlm.nih.gov/23686316","citation_count":16,"is_preprint":false},{"pmid":"25966097","id":"PMC_25966097","title":"Expression and significance of SATB1 in the development of breast cancer.","date":"2015","source":"Genetics and molecular research : GMR","url":"https://pubmed.ncbi.nlm.nih.gov/25966097","citation_count":15,"is_preprint":false},{"pmid":"31001272","id":"PMC_31001272","title":"NF-κB Signaling and IL-4 Signaling Regulate SATB1 Expression via Alternative Promoter Usage During Th2 Differentiation.","date":"2019","source":"Frontiers in immunology","url":"https://pubmed.ncbi.nlm.nih.gov/31001272","citation_count":15,"is_preprint":false},{"pmid":"17343824","id":"PMC_17343824","title":"SATB1 regulates SPARC expression in K562 cell line through binding to a specific sequence in the third intron.","date":"2007","source":"Biochemical and biophysical research communications","url":"https://pubmed.ncbi.nlm.nih.gov/17343824","citation_count":15,"is_preprint":false},{"pmid":"20694677","id":"PMC_20694677","title":"Phosphorylation-dependent regulation of SATB1, the higher-order chromatin organizer and global gene regulator.","date":"2010","source":"Methods in molecular biology (Clifton, N.J.)","url":"https://pubmed.ncbi.nlm.nih.gov/20694677","citation_count":15,"is_preprint":false},{"pmid":"28049521","id":"PMC_28049521","title":"Analysis of cellular and molecular antitumor effects upon inhibition of SATB1 in glioblastoma cells.","date":"2017","source":"BMC cancer","url":"https://pubmed.ncbi.nlm.nih.gov/28049521","citation_count":15,"is_preprint":false},{"pmid":"29307244","id":"PMC_29307244","title":"The role of SATB1 in HTR8/SVneo cells and pathological mechanism of preeclampsia.","date":"2018","source":"The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians","url":"https://pubmed.ncbi.nlm.nih.gov/29307244","citation_count":14,"is_preprint":false},{"pmid":"27883059","id":"PMC_27883059","title":"Hepatic SATB1 induces paracrine activation of hepatic stellate cells and is upregulated by HBx.","date":"2016","source":"Scientific reports","url":"https://pubmed.ncbi.nlm.nih.gov/27883059","citation_count":14,"is_preprint":false},{"pmid":"25090413","id":"PMC_25090413","title":"Fluorosed mouse ameloblasts have increased SATB1 retention and Gαq activity.","date":"2014","source":"PloS one","url":"https://pubmed.ncbi.nlm.nih.gov/25090413","citation_count":14,"is_preprint":false}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":49012,"output_tokens":8598,"usd":0.138003,"stage1_stop_reason":"end_turn"},"stage2":{"model":"claude-opus-4-8","input_tokens":18213,"output_tokens":5889,"usd":0.119145,"stage2_stop_reason":"end_turn"},"total_usd":0.257148,"stage1_batch_id":"msgbatch_013LWZZT6MWaqB9qyTSeQBmU","stage2_batch_id":"msgbatch_0194ZzQaTGNpruoNJBbEMbt3","note":"batch pricing = 50% of standard"},"stage1_raw":"```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 1994,\n      \"finding\": \"SATB1 binds DNA at matrix attachment regions (MARs) in the minor groove, making virtually no contact with DNA bases. A 150-amino-acid polypeptide constitutes the binding domain, and a novel DNA-binding motif requires the concomitant presence of both N- and C-terminal ends of the binding domain for full activity.\",\n      \"method\": \"Deletion mutagenesis, DNA-binding assays, cloning of mouse SATB1 cDNA\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — in vitro DNA binding assays with systematic mutagenesis of the binding domain, replicated across multiple deletion constructs\",\n      \"pmids\": [\"8114718\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1999,\n      \"finding\": \"SATB1 physically interacts with the homeoprotein CDP (CCAAT displacement protein) through its DNA-binding domain; this interaction is mutual (CDP interacts with three of four SATB1 DNA-binding domains), prevents each protein from binding DNA, and functionally antagonizes SATB1-mediated repression of the MMTV promoter in T cells.\",\n      \"method\": \"GST pull-down, reciprocal co-immunoprecipitation from nuclear extracts, far-Western blotting, gel retardation assay, transient-transfection reporter assay\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1–2 / Strong — reciprocal co-IP, GST pulldown, far-Western, and functional reporter assay all in the same study\",\n      \"pmids\": [\"10373541\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"SATB1-null mice show severe defects in T-cell development with multiple gene deregulation, demonstrating that SATB1 acts as a global orchestrator of temporal and spatial gene expression during T-cell development, including repression of IL-2Rα and IL-7Rα at inappropriate stages.\",\n      \"method\": \"SATB1-null mouse generation, flow cytometry, gene expression profiling of 589 genes\",\n      \"journal\": \"Genes & development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic knockout with defined cellular and molecular phenotype, multiple gene expression readouts\",\n      \"pmids\": [\"10716941\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"Nuclear matrix binding by SATB1 is required for transcriptional repression: a nuclear matrix targeting sequence (NMTS) spanning amino acids 224–278 is needed for SATB1 localization to the nuclear matrix, and deletion of the NMTS abrogates SATB1-mediated repression of integrated MMTV proviruses without affecting DNA binding.\",\n      \"method\": \"SATB1 deletion constructs, nuclear fractionation, retroviral reporter gene assay, GFP fusion localization\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1–2 / Moderate — domain deletion series combined with functional reporter assay and subcellular fractionation, single lab\",\n      \"pmids\": [\"15851481\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"On TH2 cell activation, SATB1 folds the 200-kb TH2 cytokine locus (Il5, Il4, Il13) into densely looped chromatin anchored at SATB1 binding sites, recruits Brg1, GATA3, STAT6, c-Maf, and RNA polymerase II across the locus, and is required for cytokine gene expression; RNAi-mediated knockdown of SATB1 abolishes both loop compaction and cytokine induction.\",\n      \"method\": \"RNAi knockdown, chromosome conformation capture/looping assays, ChIP for histone modifications and transcription factors, RNA analysis\",\n      \"journal\": \"Nature genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple orthogonal methods (ChIP, looping assays, RNAi functional readout) in a single focused study, widely replicated concept\",\n      \"pmids\": [\"17057718\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"SATB1 is sumoylated at lysine-744 by SUMO-1 with Ubc9 and PIAS family members acting as E2 and E3 enzymes; sumoylation targets SATB1 to promyelocytic leukemia nuclear bodies and is required for subsequent caspase cleavage of SATB1.\",\n      \"method\": \"Yeast two-hybrid screen, overexpression of SUMO/PIAS in Jurkat cells, site-directed mutagenesis (K744R), in-frame SUMO fusion rescue, immunofluorescence to PML bodies\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1–2 / Moderate — mutagenesis, rescue by SUMO fusion, and localization with functional caspase-cleavage readout in one study\",\n      \"pmids\": [\"18408014\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"SATB1 forms a repressor complex with CtBP1 via the PVPLS motif in its PDZ-like domain; PKC-mediated or ionomycin/LiCl-induced acetylation of SATB1 disrupts CtBP1 interaction, reduces CtBP1 and HDAC1 occupancy at SATB1 binding sites (IL-2 and c-Myc promoters), and derepresses target gene expression.\",\n      \"method\": \"Co-immunoprecipitation, ChIP, site-directed mutagenesis of PVPLS motif, gene expression profiling with SATB1/CtBP1 siRNA knockdown\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1–2 / Moderate — reciprocal co-IP, mutagenesis of interaction motif, ChIP, and functional gene expression readout in one study\",\n      \"pmids\": [\"19103759\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"SATB1 is an essential silencing factor for Xist-mediated gene silencing: loss of SATB1 in lymphoma cells abolishes Xist silencing function; ectopic expression of SATB1 or SATB2 in embryonic fibroblasts (which normally cannot support X inactivation initiation) enables gene silencing by Xist.\",\n      \"method\": \"SATB1 loss-of-function in lymphoma model, viral SATB1/SATB2 expression in fibroblasts, Xist localization by FISH, gene silencing assays\",\n      \"journal\": \"Developmental cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — loss-of-function and gain-of-function in two different cellular models with defined molecular phenotype\",\n      \"pmids\": [\"19386260\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"Satb1-null ES cells show impaired differentiation and elevated expression of pluripotency factors (Nanog, Klf4, Tbx3); Satb1 and Satb2 both bind the Nanog locus in vivo and have opposing effects, as Satb1/Satb2 double knockout cells show near-normal differentiation.\",\n      \"method\": \"Satb1−/− ES cell analysis, ChIP for Satb1 binding to Nanog locus, gene expression profiling, cell fusion reprogramming assay\",\n      \"journal\": \"Genes & development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP confirming direct Nanog locus binding, knockout phenotype, and epistasis with Satb2 in the same study\",\n      \"pmids\": [\"19933152\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"SATB1 interacts with β-catenin and recruits it (along with p300 acetyltransferase) to SATB1 genomic binding sites including the GATA3 promoter; this interaction promotes TH2 lineage commitment and is Wnt-signaling dependent. Wnt inhibition (Dkk1) or β-catenin knockdown reduces TH2 cytokine expression.\",\n      \"method\": \"Co-immunoprecipitation, ChIP, gene expression profiling, siRNA knockdown of SATB1 and β-catenin, Wnt inhibitor treatment\",\n      \"journal\": \"PLoS biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP, ChIP, and functional knockdown with gene expression readout in a single study\",\n      \"pmids\": [\"20126258\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"SATB1 is phosphorylated by protein kinase C (PKC) at serine 185 in vivo; this phosphorylation enhances SATB1 association with HDAC1 corepressor and promotes transcriptional repression at MAR-linked target genes.\",\n      \"method\": \"In vitro kinase assay, in vivo immunoprecipitation after PKC activation, PKC inhibitor treatment, MAR-linked reporter assay\",\n      \"journal\": \"Methods in molecular biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 1–2 / Weak — in vitro phosphorylation and functional reporter assay described but from a methods/review chapter with limited new primary data reported\",\n      \"pmids\": [\"20694677\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"Satb1 binds genomic loci of multiple immediate-early genes (Fos, Fosb, Egr1, Egr2, Arc, Bdnf) in cortical neurons; Satb1-null mice show altered timing and levels of IEG expression during postnatal cortical development and reduced dendritic spine density in cortical pyramidal neurons.\",\n      \"method\": \"ChIP for Satb1 at IEG loci, analysis of Satb1-null mouse cortical neurons, dendritic spine density quantification, organotypic culture stimulation\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP demonstrating direct genomic binding, knockout with defined neuronal phenotype and gene expression readout\",\n      \"pmids\": [\"22064485\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"SATB1 deficiency in Sézary cells causes apoptosis resistance by failing to activate FasL/CD95L transcription; retroviral restoration of SATB1 in Sézary cells triggers spontaneous cell death, sensitizes cells to activation-induced cell death, activates caspase-8 and caspase-3, and increases endogenous FasL expression.\",\n      \"method\": \"Retroviral gene transduction, apoptosis assays, caspase activation analysis, mRNA/protein quantification\",\n      \"journal\": \"Blood\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Weak — clean gain-of-function with defined apoptotic pathway readout, single lab\",\n      \"pmids\": [\"21270445\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Satb1 directs hematopoietic stem cell (HSC) differentiation toward the lymphoid lineage: Satb1-deficient HSCs fail lymphopoiesis in culture and in vivo reconstitution; forced Satb1 expression in HSCs and ES cells robustly promotes lymphocyte differentiation. Reduced Satb1 in aged HSCs correlates with compromised lymphopoietic potential restored by forced Satb1 expression.\",\n      \"method\": \"Satb1-knockout mouse, bone marrow transplantation, retroviral Satb1 transduction of HSCs and ES cells, gene expression profiling\",\n      \"journal\": \"Immunity\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — both loss-of-function and gain-of-function in vivo, with transplantation rescue experiments and gene expression profiling\",\n      \"pmids\": [\"23791645\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"SATB1 directly regulates p21 transcription in a p53-independent manner in CD30+ lymphoma cells; SATB1 silencing causes G1 cell cycle arrest via p21 activation, demonstrated by ChIP, luciferase assays, and mutational analysis of the p21 promoter.\",\n      \"method\": \"ChIP, luciferase reporter assay, mutational analysis of p21 promoter, siRNA knockdown with cell cycle analysis\",\n      \"journal\": \"Blood\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1–2 / Moderate — direct promoter binding confirmed by ChIP and luciferase/mutational analysis, combined with functional cell cycle readout\",\n      \"pmids\": [\"24747435\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"SATB1 is required for formation of ON dendritic arbors in ooDSGCs of mouse retina; it regulates expression of homophilic adhesion molecule Contactin 5 (Cntn5), which together with co-receptor Caspr4 mediates branch-specific homophilic interactions with interneurons required for ON dendritic fasciculation.\",\n      \"method\": \"Satb1 mutant mouse analysis, electrophysiology, in situ hybridization/immunofluorescence, Cntn5 conditional knockout, morphological quantification\",\n      \"journal\": \"Neuron\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic epistasis via Cntn5 conditional KO partially phenocopying Satb1 mutant, combined with electrophysiological and morphological readouts\",\n      \"pmids\": [\"28781169\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"HuD RNA-binding protein promotes neuronal differentiation of neural stem/progenitor cells by stabilizing SATB1 mRNA; SATB1 in turn transcriptionally activates HuD, forming a positive feedback loop, with NeuroD1 as a direct downstream transcriptional target of SATB1.\",\n      \"method\": \"RNAi knockdown, overexpression rescue experiments, mRNA stability assay, promoter-binding assay\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2–3 / Moderate — epistasis via rescue, mRNA stabilization assay, and transcriptional activation assay, single lab\",\n      \"pmids\": [\"26305964\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"SATB1 binds the Notch1 promoter in dendritic cells, activating Notch1 expression; Notch1 then drives RBPJ occupancy of the H2-Ab1 (MHC II) promoter to activate MHC class II transcription. Satb1 conditional knockout impairs conventional DC differentiation.\",\n      \"method\": \"Conditional knockout mouse, ChIP for SATB1 at Notch1 promoter, RBPJ ChIP at H2-Ab1 promoter, DC differentiation assays\",\n      \"journal\": \"Cell reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP confirming direct promoter binding plus conditional KO phenotype with pathway epistasis\",\n      \"pmids\": [\"26876172\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Satb1-dependent activation of Treg-specific super-enhancers (Treg-SEs) in Treg precursor cells is required for expression of Foxp3 and other Treg signature genes; T cell-specific Satb1 deficiency impairs Treg-SE activation and causes autoimmunity due to Treg deficiency.\",\n      \"method\": \"T cell-specific Satb1 conditional knockout, H3K27ac ChIP-seq to identify super-enhancers, gene expression analysis, autoimmunity phenotyping\",\n      \"journal\": \"Nature immunology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — conditional KO with ChIP-seq super-enhancer mapping and defined immune phenotype\",\n      \"pmids\": [\"27992401\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"Satb1 recruits the NuRD (nucleosome remodeling deacetylase) complex to Pdcd1 (PD-1) regulatory regions to epigenetically repress PD-1 expression in T cells; tumor-derived TGF-β suppresses Satb1 expression via Smad binding to the Satb1 promoter, and Smad proteins compete with the Satb1-NuRD complex for binding to Pdcd1 enhancers.\",\n      \"method\": \"Satb1-deficient T cells, ChIP for NuRD complex at Pdcd1 locus, Smad binding assay at Satb1 promoter and Pdcd1 enhancers, competition assay\",\n      \"journal\": \"Immunity\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP showing NuRD recruitment, Smad competition at regulatory regions, and Satb1 KO with 40-fold PD-1 increase as functional readout\",\n      \"pmids\": [\"28099864\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"In post-selection thymocytes, SATB1 activates lineage-specifying genes (ThPOK, Runx3, CD4, CD8, Foxp3) by regulating their enhancers; SATB1-deficient thymocytes are misdirected into inappropriate T lineages and fail to generate NKT and Treg subsets.\",\n      \"method\": \"SATB1-deficient thymocyte analysis, ChIP/enhancer activity assays at lineage-specifying loci, flow cytometry lineage tracing\",\n      \"journal\": \"Cell reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — conditional KO with defined lineage phenotypes and enhancer-level molecular mechanism\",\n      \"pmids\": [\"28494867\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"Loss of SATB1 in post-mitotic dopaminergic neurons activates a cellular senescence transcriptional program and SATB1 directly represses expression of the pro-senescence factor p21 in dopaminergic neurons.\",\n      \"method\": \"SATB1 knockout in human iPSC-derived dopaminergic neurons and in mice, ChIP for SATB1 at p21 locus, senescence marker analysis\",\n      \"journal\": \"Cell stem cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP demonstrating direct p21 repression, with in vitro and in vivo knockout models showing senescence phenotype\",\n      \"pmids\": [\"31543366\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"Satb1 preferentially targets nucleosome-dense genomic regions; the homeodomain of Satb1 is dispensable for high-affinity binding but essential for binding specificity; Satb1-DNA interactions are mechanosensitive, with increased negative torsional stress enhancing Satb1 binding. Satb1 stabilizes base-unpairing regions (BURs) against melting.\",\n      \"method\": \"Single-molecule live-cell imaging, deep sequencing (SELEX/ChIP-seq), DNA torsional stress manipulation, homeodomain deletion mutants\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — live-cell single-molecule imaging combined with deep sequencing and domain mutagenesis, multiple orthogonal methods\",\n      \"pmids\": [\"31324780\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"SATB1 is required for secretory ameloblast cell polarity and directional amelogenin secretion; Satb1-null ameloblasts lose Tomes' processes, inter-ameloblastic adhesion, and apical F-actin architecture. SATB1 controls expression of Eps8 (an actin-regulator), and Eps8 loss at the apical surface underlies the polarity defect.\",\n      \"method\": \"Satb1-null mouse analysis, microarray for SATB1 targets, immunofluorescence for polarity markers and Eps8, amelogenin secretion assay\",\n      \"journal\": \"BMC biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — knockout with defined cellular polarity phenotype, identified Eps8 as molecular mediator, replicated in small intestinal epithelium\",\n      \"pmids\": [\"31830989\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"USP47 interacts with SATB1 and mediates its deubiquitination and stabilization; SMURF2 is an E3 ubiquitin ligase that promotes SATB1 degradation by increasing its ubiquitination; USP47 negatively regulates SMURF2, thereby controlling SATB1 protein levels and transcriptional activity.\",\n      \"method\": \"Co-immunoprecipitation, ubiquitination assays, USP47 knockdown/knockout, SMURF2 overexpression/knockdown, in vivo colon cancer model\",\n      \"journal\": \"Cancer letters\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal Co-IP and ubiquitination assays establishing E3 ligase and deubiquitinase, single lab\",\n      \"pmids\": [\"30742943\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"SATB1 directly represses SPARC expression in K562 cells by binding to a specific 17 bp DNA sequence in the third intron of the SPARC gene, as confirmed by ChIP with anti-SATB1 antibody; siRNA knockdown of SATB1 reduces SPARC expression.\",\n      \"method\": \"SATB1 overexpression, microarray, siRNA knockdown, ChIP with anti-SATB1, bioinformatics binding site identification\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Weak — ChIP confirming direct intronic binding, supported by both overexpression and siRNA knockdown, single lab\",\n      \"pmids\": [\"17343824\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"N6-methyladenine (N6-mA) DNA modification antagonizes SATB1 function: N6-mA deposited at SIDD (stress-induced DNA duplex destabilization) regions reduces SATB1-SIDD interactions by >500-fold in vitro, prevents SATB1 chromatin binding in vivo, and restricts euchromatin spread during trophoblast development.\",\n      \"method\": \"In vitro SATB1-DNA binding assay with N6-mA-modified substrates, ChIP for SATB1 in trophoblast stem cells with N6-mA manipulation, Hi-C chromatin domain analysis\",\n      \"journal\": \"Nature\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — reconstituted in vitro binding assay showing >500-fold reduction plus in vivo ChIP validation with functional chromatin domain phenotype\",\n      \"pmids\": [\"32669713\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"Missense variants in the CUT1 and CUT2 DNA-binding domains of SATB1 result in stronger chromatin binding and increased transcriptional repression associated with severe neurodevelopmental phenotype; haploinsufficiency variants cause milder phenotype; premature truncation variants that escape NMD are transcriptionally active but mislocalized.\",\n      \"method\": \"Functional assays on 42 individuals with SATB1 variants, chromatin binding assays, transcriptional repression assays, localization studies\",\n      \"journal\": \"American journal of human genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — multiple variant classes tested with functional assays (binding, repression, localization) across 42 individuals providing robust genotype-mechanism correlation\",\n      \"pmids\": [\"33513338\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"SATB1 organizes T cell 3D genome architecture by constraining chromatin interactions around CTCF co-occupied sites; SATB1 depletion increases chromatin contacts among SATB1/CTCF co-occupied sites; SATB1 is required for retention of CTCF in the nuclear matrix but does not affect CTCF occupancy at chromatin.\",\n      \"method\": \"Hi-C, SATB1 depletion in human and murine T cells, ChIP-seq for CTCF, nuclear matrix fractionation\",\n      \"journal\": \"Cell reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Hi-C, ChIP-seq, and nuclear fractionation in both human and mouse T cells\",\n      \"pmids\": [\"37000624\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"SATB1 shapes the 3D enhancer network of developing T cells: SATB1 is enriched at anchors of promoter-enhancer loops; SATB1 conditional KO reduces interactions among super-enhancers and between super-enhancers and promoters, impairing expression of master regulator genes including Bcl6 and the TCR locus.\",\n      \"method\": \"H3K27ac HiChIP, Hi-C, T cell-specific Satb1 conditional knockout, gene expression analysis\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — HiChIP and Hi-C in conditional KO mouse, multiple orthogonal chromatin conformation methods\",\n      \"pmids\": [\"36376298\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"SATB1 controls DP thymocyte identity by globally regulating super-enhancer activity: in Satb1-deleted thymocytes, interactions among super-enhancers and between super-enhancers and promoters driving DP-specific genes are specifically decreased, redirecting cell identity.\",\n      \"method\": \"Single-cell RNA-seq, Hi-C, Satb1 conditional knockout in thymocytes, super-enhancer mapping\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Hi-C and scRNA-seq in conditional KO, two orthogonal chromatin/transcriptomic methods\",\n      \"pmids\": [\"36138028\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"TGF-β-mediated repression of SATB1 promotes Tfh cell differentiation: Smad proteins downstream of TGF-β bind the Satb1 promoter to repress SATB1 expression, relieving SATB1-dependent repression of Icos and Pdcd1, which collectively drives Tfh differentiation and inhibits T follicular regulatory cell skewing.\",\n      \"method\": \"CD4-Cre Satb1 conditional knockout, TGF-β treatment of human T cells, Smad binding assay at Satb1 promoter, Icos/CXCL13 functional analysis\",\n      \"journal\": \"Immunity\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — conditional KO, Smad-promoter binding assay, and human T cell gain/loss-of-function experiments\",\n      \"pmids\": [\"35021053\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"During apoptosis, SATB1 undergoes caspase-3-mediated cleavage in Jurkat cells, forming a special 3D network distribution in early apoptosis before nuclear architecture collapse; cleavage is apoptosis-specific.\",\n      \"method\": \"Immunostaining, Western blot, caspase-3 inhibitor treatment, apoptosis induction in Jurkat cells\",\n      \"journal\": \"Cell biology international\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — immunostaining and Western blot showing caspase-3-dependent cleavage, replicated across multiple apoptotic stimuli but single lab\",\n      \"pmids\": [\"16377216\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"SATB1 promotes Schwann cell viability and migration by binding the SHIP1 gene promoter region and recruiting HDAC1 to repress SHIP1 expression, thereby activating the PI3K/AKT signaling pathway.\",\n      \"method\": \"ChIP assay for SATB1 at SHIP1 promoter, HDAC1 co-IP, Satb1 knockout/overexpression, SHIP1 rescue experiment, PI3K/AKT pathway analysis\",\n      \"journal\": \"European review for medical and pharmacological sciences\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2–3 / Weak — ChIP confirming SHIP1 promoter binding with HDAC1 recruitment, but rescue experiment and pathway analysis from single lab\",\n      \"pmids\": [\"30024617\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"SATB1, miR-22-3p, and GBA form a single regulatory pathway in dopaminergic neurons: SATB1 transcriptionally represses MIR22HG; loss of SATB1 derepresses miR-22-3p, which reduces GBA expression, causing glucocerebroside accumulation that impairs lysosomal and mitochondrial function and induces cellular senescence.\",\n      \"method\": \"Human and murine neuronal lines, iPSC-derived dopaminergic neurons, mouse models; SATB1 KO/overexpression, miR-22-3p manipulation, GBA activity assays, senescence markers\",\n      \"journal\": \"Aging cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — pathway dissected by stepwise KO/overexpression at each node with functional readouts in multiple model systems\",\n      \"pmids\": [\"38303548\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"SATB1 is a nuclear genome organizer and transcription factor that binds matrix attachment regions (MARs)/base-unpairing regions in the minor groove via a novel bipartite DNA-binding domain, tethers these sites to the nuclear matrix through an NMTS (aa 224–278), and folds large chromatin domains into loops to coordinate expression of gene clusters; it recruits corepressor complexes (HDAC1, CtBP1, NuRD) or coactivators (Brg1, p300, β-catenin) depending on post-translational state (PKC phosphorylation at S185 promotes repression; acetylation switches to activation), is regulated by sumoylation at K744 and ubiquitination (SMURF2 as E3 ligase, USP47 as deubiquitinase), and its chromatin binding is antagonized by N6-methyladenine DNA modification at SIDD sequences; in T cells it is essential for TH2 cytokine locus looping, Treg and DP thymocyte super-enhancer activation, PD-1 repression, and 3D genome organization around CTCF co-occupied sites, while in neurons it regulates immediate-early gene timing, dendritic spine density via a HuD→SATB1→NeuroD1 feedback loop, and dopaminergic neuron senescence through direct p21 repression and a SATB1→miR-22-3p→GBA pathway.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"SATB1 is a nuclear genome organizer and transcription factor that binds matrix attachment regions (MARs) in the DNA minor groove via a novel bipartite DNA-binding domain requiring both N- and C-terminal ends for full activity, making virtually no contact with the bases [#0]. It preferentially targets nucleosome-dense base-unpairing regions (BURs), stabilizes them against melting, binds in a mechanosensitive manner enhanced by negative torsional stress, and uses its homeodomain for binding specificity rather than affinity [#22]. By tethering its bound sites to the nuclear matrix, an activity required for transcriptional repression, SATB1 folds large chromatin domains into loops that coordinate gene clusters [#3, #4]. In T cells it functions as a global orchestrator of development, looping the 200-kb TH2 cytokine locus and recruiting transcription factors and RNA polymerase II to drive cytokine expression [#2, #4], and it organizes 3D genome architecture by constraining chromatin interactions around CTCF co-occupied sites and shaping super-enhancer/promoter loop networks that specify Treg, DP thymocyte, and lineage identity [#18, #28, #29, #30]. SATB1 output is set by its post-translational state and partners: it recruits corepressor machinery (CtBP1, HDAC1, NuRD) through defined motifs, with PKC phosphorylation at S185 promoting repression and acetylation disrupting CtBP1 binding to switch toward activation [#6, #10, #19], while β-catenin/p300 recruitment supports activation [#9]. Its abundance and activity are tuned by sumoylation at K744 [#5], a USP47/SMURF2 ubiquitination axis [#24], and by N6-methyladenine DNA modification at SIDD sequences that antagonizes chromatin binding [#26]. In neurons SATB1 regulates immediate-early gene timing and dendritic architecture [#11], and represses the pro-senescence factor p21 and a MIR22HG/miR-22-3p/GBA pathway in dopaminergic neurons [#21, #34]. Missense variants in its CUT1/CUT2 DNA-binding domains cause a severe neurodevelopmental disorder through gain of chromatin binding and repression, while haploinsufficiency yields a milder phenotype [#27].\",\n  \"teleology\": [\n    {\n      \"year\": 1994,\n      \"claim\": \"Established the molecular basis of SATB1-DNA recognition, showing it reads DNA structure rather than sequence through a novel bipartite binding domain.\",\n      \"evidence\": \"Deletion mutagenesis and in vitro DNA-binding assays on cloned mouse SATB1\",\n      \"pmids\": [\"8114718\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"No structure of the bipartite domain bound to DNA\", \"Did not address in vivo chromatin targets\"]\n    },\n    {\n      \"year\": 1999,\n      \"claim\": \"Showed SATB1 DNA binding can be antagonized by a protein partner, introducing the concept of regulated occupancy at MARs.\",\n      \"evidence\": \"Reciprocal co-IP, GST pulldown, far-Western, and reporter assays for SATB1-CDP interaction in T cells\",\n      \"pmids\": [\"10373541\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Physiological contexts where CDP antagonism operates not defined\", \"Stoichiometry of competition unknown\"]\n    },\n    {\n      \"year\": 2000,\n      \"claim\": \"Defined SATB1 as a global, in vivo orchestrator of temporal and spatial gene expression rather than a single-locus factor.\",\n      \"evidence\": \"SATB1-null mouse with flow cytometry and 589-gene expression profiling of T-cell development\",\n      \"pmids\": [\"10716941\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct vs indirect targets not separated\", \"Mechanism linking binding to gene deregulation not resolved here\"]\n    },\n    {\n      \"year\": 2005,\n      \"claim\": \"Separated nuclear matrix tethering from DNA binding, establishing matrix anchoring as the functional requirement for SATB1-mediated repression.\",\n      \"evidence\": \"NMTS deletion constructs with nuclear fractionation, GFP localization, and retroviral MMTV reporter assays\",\n      \"pmids\": [\"15851481\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Matrix protein partners of the NMTS unidentified\", \"Single lab, single reporter system\"]\n    },\n    {\n      \"year\": 2006,\n      \"claim\": \"Demonstrated that SATB1 physically loops a large gene cluster into transcriptionally competent chromatin, providing the paradigm for its genome-folding function.\",\n      \"evidence\": \"RNAi knockdown, chromosome conformation/looping assays, and ChIP at the TH2 cytokine locus\",\n      \"pmids\": [\"17057718\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How looping mechanically follows from matrix anchoring not resolved\", \"Order of recruitment of co-factors undefined\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Identified post-translational switches controlling SATB1 output: corepressor recruitment via a PVPLS motif and its reversal by acetylation, plus sumoylation directing SATB1 to PML bodies.\",\n      \"evidence\": \"Co-IP, motif mutagenesis, ChIP, and gene profiling for CtBP1; yeast two-hybrid, K744R mutagenesis and SUMO-fusion rescue for sumoylation\",\n      \"pmids\": [\"19103759\", \"18408014\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Acetyltransferase/deacetylase enzymes for the activation switch not fully defined\", \"Functional consequence of PML targeting beyond caspase cleavage unclear\"]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Extended SATB1 function to large-scale silencing and stem-cell fate, showing it is required for Xist-mediated silencing and regulates pluripotency loci.\",\n      \"evidence\": \"Loss- and gain-of-function in lymphoma and fibroblast models with Xist FISH; Satb1-null ES cells with ChIP at the Nanog locus and Satb2 epistasis\",\n      \"pmids\": [\"19386260\", \"19933152\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Mechanistic link between SATB1 and Xist silencing machinery unresolved\", \"Basis of opposing SATB1/SATB2 effects at shared loci not defined\"]\n    },\n    {\n      \"year\": 2010,\n      \"claim\": \"Connected SATB1 to upstream signaling, with PKC phosphorylation enhancing repression and Wnt/β-catenin recruitment promoting activation and TH2 commitment.\",\n      \"evidence\": \"In vitro/in vivo kinase and reporter assays for S185; co-IP, ChIP, and Wnt-inhibitor/knockdown experiments for β-catenin/p300\",\n      \"pmids\": [\"20694677\", \"20126258\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"S185 finding from a methods chapter with limited primary data\", \"Integration of phosphorylation and acetylation switches not jointly tested\"]\n    },\n    {\n      \"year\": 2011,\n      \"claim\": \"Established direct SATB1 control of neuronal gene programs and morphology, broadening its role beyond the immune system.\",\n      \"evidence\": \"ChIP at immediate-early gene loci and dendritic spine quantification in Satb1-null cortical neurons\",\n      \"pmids\": [\"22064485\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How SATB1 sets IEG timing mechanistically unknown\", \"Cofactors in neurons not identified\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Showed SATB1 directs hematopoietic lineage choice and links its decline to aging-associated loss of lymphopoietic potential.\",\n      \"evidence\": \"Knockout, transplantation rescue, and retroviral overexpression in HSCs and ES cells with gene profiling\",\n      \"pmids\": [\"23791645\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct target genes mediating lymphoid bias not pinpointed\", \"Cause of Satb1 decline in aged HSCs unknown\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Demonstrated direct, p53-independent transcriptional repression of p21 by SATB1, coupling it to cell-cycle and apoptosis control in malignancy.\",\n      \"evidence\": \"ChIP, luciferase and promoter mutational analysis with siRNA and cell-cycle readouts in lymphoma cells; gain-of-function FasL activation in Sezary cells\",\n      \"pmids\": [\"24747435\", \"21270445\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Cofactors at the p21 promoter not defined\", \"FasL regulation shown in a single lymphoma model\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Defined SATB1-driven transcriptional programs in neural differentiation and circuit assembly, including a HuD-SATB1 feedback loop and adhesion-molecule control of dendrite targeting.\",\n      \"evidence\": \"mRNA stability/promoter assays for HuD-SATB1-NeuroD1; Cntn5 conditional KO and electrophysiology in retinal ooDSGCs; ChIP/conditional KO for Notch1 in DCs\",\n      \"pmids\": [\"26305964\", \"28781169\", \"26876172\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct vs indirect target distinction incomplete for some loci\", \"HuD feedback loop from single lab\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Established SATB1 as an activator of cell-type-specific super-enhancers, mechanistically linking it to Treg and thymocyte lineage identity and tolerance.\",\n      \"evidence\": \"T-cell-specific conditional KO with H3K27ac ChIP-seq super-enhancer mapping and autoimmunity phenotyping; enhancer/lineage analysis in post-selection thymocytes\",\n      \"pmids\": [\"27992401\", \"28494867\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How SATB1 selects which enhancers to activate vs repress unresolved\", \"Direct enhancer-binding stoichiometry not quantified\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Identified SATB1-NuRD recruitment as the repressive mechanism keeping PD-1 silenced, and revealed TGF-β/Smad suppression of SATB1 as an immune-evasion axis.\",\n      \"evidence\": \"ChIP for NuRD at Pdcd1, Smad-binding/competition assays, and Satb1-deficient T cells with 40-fold PD-1 increase\",\n      \"pmids\": [\"28099864\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Structural basis of Smad-SATB1 competition unknown\", \"Generality across other immune checkpoints untested\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Resolved the biophysics of SATB1 chromatin targeting and the mechanisms tuning its protein level and DNA access.\",\n      \"evidence\": \"Single-molecule imaging and deep sequencing of BUR binding; USP47/SMURF2 ubiquitination assays; in vitro and in vivo N6-mA antagonism with Hi-C; ChIP-based repression of SPARC\",\n      \"pmids\": [\"31324780\", \"30742943\", \"32669713\", \"17343824\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Enzymes writing N6-mA at SIDD in mammals not fully defined\", \"USP47/SMURF2 axis from single lab\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Extended SATB1 to non-immune cellular architecture and to neuronal aging, repressing p21 to prevent dopaminergic-neuron senescence and controlling epithelial polarity via Eps8.\",\n      \"evidence\": \"ChIP at p21 in iPSC-derived neurons and mice; microarray and immunofluorescence in Satb1-null ameloblasts; ChIP/HDAC1 recruitment at SHIP1 in Schwann cells\",\n      \"pmids\": [\"31543366\", \"31830989\", \"30024617\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Mechanism linking p21 repression to senescence program incomplete\", \"Schwann cell SHIP1 finding from a single lower-tier study\"]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Linked SATB1 dysfunction causally to human neurodevelopmental disease and mapped variant class to molecular consequence.\",\n      \"evidence\": \"Functional chromatin-binding, repression, and localization assays across variants in 42 individuals\",\n      \"pmids\": [\"33513338\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How gain-of-binding variants produce neurodevelopmental pathology at the circuit level unknown\", \"Tissue-specific consequences not modeled\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Defined SATB1 as a constraint on 3D genome architecture acting through CTCF co-occupied sites and super-enhancer loop networks to enforce developmental identity.\",\n      \"evidence\": \"Hi-C, HiChIP, ChIP-seq, scRNA-seq, and nuclear matrix fractionation in human and murine T cells and conditional KO thymocytes; Smad-Satb1 promoter axis driving Tfh differentiation\",\n      \"pmids\": [\"37000624\", \"36376298\", \"36138028\", \"35021053\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether SATB1 constrains vs facilitates contacts is context-dependent and mechanism unresolved\", \"Direct molecular link between SATB1 and CTCF matrix retention unknown\"]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"Assembled a complete SATB1 regulatory pathway in dopaminergic neurons connecting transcriptional repression to lysosomal/mitochondrial dysfunction and senescence.\",\n      \"evidence\": \"Stepwise KO/overexpression at SATB1, miR-22-3p, and GBA nodes with activity and senescence readouts across multiple model systems\",\n      \"pmids\": [\"38303548\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Relative contribution of the p21 and GBA arms to senescence not weighted\", \"Relevance to human Parkinsonian pathology not directly tested\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How SATB1 mechanically converts matrix anchoring and BUR binding into specific loop formation, and what determines its context-dependent switch between repression and activation genome-wide, remain unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"High\",\n      \"gaps\": [\"No structural model of SATB1 organizing a chromatin loop\", \"Rules governing repressor vs activator complex recruitment at each site not defined\", \"Integration of phosphorylation, acetylation, sumoylation, and ubiquitination into a single regulatory logic untested\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [0, 22, 26]},\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [2, 4, 14, 19, 21]},\n      {\"term_id\": \"GO:0003723\", \"supporting_discovery_ids\": [16]},\n      {\"term_id\": \"GO:0060090\", \"supporting_discovery_ids\": [3, 4, 28]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [3, 5, 27]},\n      {\"term_id\": \"GO:0000228\", \"supporting_discovery_ids\": [3, 4, 28]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-4839726\", \"supporting_discovery_ids\": [4, 26, 28, 29, 30]},\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [2, 14, 19, 20, 21]},\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [2, 18, 19, 20, 31]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [8, 13, 15, 23]},\n      {\"term_id\": \"R-HSA-8953897\", \"supporting_discovery_ids\": [21, 34]}\n    ],\n    \"complexes\": [\"NuRD complex (SATB1-recruited)\", \"CtBP1/HDAC1 corepressor complex\"],\n    \"partners\": [\"CDP\", \"CtBP1\", \"HDAC1\", \"CTCF\", \"CTNNB1\", \"EP300\", \"USP47\", \"SMURF2\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":8,"faith_total":8,"faith_pct":100.0}}