{"gene":"ZBTB16","run_date":"2026-06-11T09:02:06","timeline":{"discoveries":[{"year":1997,"finding":"PLZF interacts with the SMRT corepressor via its POZ/BTB domain; this interaction mediates transcriptional repression and is retained in the PLZF-RARα fusion oncoprotein.","method":"Co-immunoprecipitation, yeast two-hybrid, domain mapping","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 / Strong — reciprocal co-IP and domain mapping replicated across multiple labs (PMID:9256429, PMID:9765306, PMID:9462740)","pmids":["9256429"],"is_preprint":false},{"year":1998,"finding":"PLZF interacts with mSin3A and histone deacetylase-1 (HDAC1) in addition to SMRT; these corepressor interactions are mediated by distinct interfaces and differ between PLZF and the oncogenic PLZF-RARα chimera, which lacks several corepressor interaction sites present in native PLZF.","method":"Co-immunoprecipitation, GST pulldown, domain mapping","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 2 / Strong — reciprocal co-IP with domain mapping, findings replicated in multiple labs","pmids":["9765306"],"is_preprint":false},{"year":1998,"finding":"The BTB/POZ domain of PLZF forms an obligate homodimer with an extensive hydrophobic interface; a surface-exposed groove at the dimer interface is lined with conserved residues suggestive of a corepressor peptide-binding site. The BTB domain directs PLZF to a nuclear punctate pattern and interacts with components of the histone deacetylase complex.","method":"X-ray crystallography at 1.9 Å resolution, nuclear localization experiments","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 1 / Strong — crystal structure with functional validation of localization and HDAC complex interaction","pmids":["9770450"],"is_preprint":false},{"year":1998,"finding":"PLZF-RARα, unlike PML-RARα, forms RA-insensitive corepressor complexes via its PLZF moiety, explaining retinoic acid resistance. HDAC inhibitor TSA combined with RA can overcome the transcriptional repressor activity of both fusion proteins.","method":"Transgenic mouse models, co-immunoprecipitation, transcriptional reporter assays, TSA treatment","journal":"Nature genetics","confidence":"High","confidence_rationale":"Tier 2 / Strong — transgenic mouse models combined with biochemical co-IP, replicated across labs","pmids":["9462740"],"is_preprint":false},{"year":1999,"finding":"PLZF binds DNA as a high-molecular-weight (~600 kDa) complex whose formation requires the POZ/dimerization domain. PLZF co-immunoprecipitates with cdc2 kinase, is a phosphoprotein, and the PLZF-DNA complex is abolished by phosphatase treatment, suggesting cdc2-mediated phosphorylation modulates PLZF activity. RARα/PLZF does not complex with cdc2.","method":"Electrophoretic mobility shift assay, co-immunoprecipitation, biotin-streptavidin pulldown, phosphatase treatment","journal":"Nucleic acids research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — reciprocal co-IP and biochemical assays, single lab","pmids":["10497277"],"is_preprint":false},{"year":1999,"finding":"PLZF binds and represses the cyclin A2 promoter, leading to growth suppression; expression of cyclin A2 reverts PLZF-mediated growth suppression in myeloid cells. The reciprocal fusion RARα-PLZF activates cyclin A2 transcription.","method":"Reporter gene assay, stable transfection, proliferation assay, promoter binding","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — reporter assay and functional rescue experiment, single lab","pmids":["10023668"],"is_preprint":false},{"year":2000,"finding":"Plzf acts as a growth-inhibitory and pro-apoptotic factor in the limb bud and regulates expression of AbdB Hox genes (Hoxd10-13) and Bmps in the developing limb; Zfp145−/− mice exhibit homeotic transformations of anterior skeletal elements and alterations in Hox gene expression.","method":"Knockout mouse generation, in situ hybridization, gene expression analysis","journal":"Nature genetics","confidence":"High","confidence_rationale":"Tier 2 / Strong — complete knockout with defined skeletal and molecular phenotype, replicated in follow-up studies","pmids":["10835630"],"is_preprint":false},{"year":2002,"finding":"PLZF physically interacts with GATA1 (co-immunoprecipitation in TF1 cells); co-expression of PLZF and GATA1 results in enhanced upregulation of megakaryocytic markers compared to either factor alone, suggesting a functional transcriptional complex. PLZF also activates the thrombopoietin receptor (TpoR) promoter through a direct PLZF DNA-binding site.","method":"Co-immunoprecipitation, reporter gene assay, deletion construct analysis, stable transfection","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP and functional reporter assay, single lab","pmids":["12242665"],"is_preprint":false},{"year":2002,"finding":"PLZF interacts with GATA-2 via the zinc finger region of GATA-2; this interaction modifies GATA-2 transactivation capacity. PLZF-RARα also associates with GATA-2, making GATA-dependent transcription responsive to RA plus TSA.","method":"Yeast two-hybrid, co-immunoprecipitation, domain mapping, transcriptional reporter assay","journal":"Blood","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP with domain mapping and functional assay, single lab","pmids":["11964310"],"is_preprint":false},{"year":2002,"finding":"C. elegans EOR-1 (PLZF ortholog) acts downstream of ERK and Wnt/β-catenin signaling as a positive transcriptional regulator, functioning redundantly with the Mediator complex component SUR-2 and LIN-25; eor-1 mutants exhibit reduced Ras/Wnt pathway outputs.","method":"Genetic epistasis analysis, loss-of-function mutants, double mutant analysis in C. elegans","journal":"Genes & development","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic epistasis with multiple double mutant combinations, well-controlled C. elegans study","pmids":["12130541"],"is_preprint":false},{"year":2003,"finding":"PLZF directly represses the CRABPI locus through chromatin condensation propagated from a remote intronic PLZF binding element; the reciprocal fusion RARα-PLZF binds this remote element and recruits p300 to induce promoter hypomethylation and CRABPI upregulation.","method":"Chromatin immunoprecipitation, reporter assay, methylation analysis, ChIP","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and methylation assays, functional reporter, single lab","pmids":["18000064"],"is_preprint":false},{"year":2003,"finding":"PLZF binds directly to a defined PLZF response element (PLZF-RE) in the Hoxb2 r3/r5 enhancer, cooperates with the A/T-rich Krox20 motif for in vivo enhancer activity, and the POZ domain is required for cooperative binding. The APL-associated RARα-PLZF fusion binds the PLZF-RE more strongly than wild-type PLZF.","method":"Electrophoretic mobility shift assay, reporter gene assay, in vivo chick neural tube reporter, mutagenesis","journal":"Oncogene","confidence":"High","confidence_rationale":"Tier 1 / Moderate — in vitro binding with mutagenesis and in vivo reporter validation, single lab","pmids":["12802276"],"is_preprint":false},{"year":2003,"finding":"PLZF directly interacts with RAR via its N-terminal zinc finger domain (binding to the RAR ligand-binding domain), independently of ligand. PLZF inhibits RXR-RAR heterodimerization both in vitro and in intact cells, thereby reducing transcriptional activity of RXR-RAR as well as ERα and GR.","method":"Yeast two-hybrid, GST pulldown, co-immunoprecipitation, domain mapping, transcriptional reporter assay","journal":"Nuclear receptor","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — GST pulldown and co-IP with domain mapping and functional reporter, single lab","pmids":["14521715"],"is_preprint":false},{"year":2004,"finding":"Plzf is required intrinsically in adult male germline stem cells for self-renewal; the luxoid mutation introduces a nonsense mutation in Plzf, and transplantation showed the defect is cell-autonomous. Plzf is co-expressed with Oct4 in undifferentiated spermatogonia.","method":"Spermatogonial transplantation, positional cloning, immunofluorescence co-localization","journal":"Nature genetics","confidence":"High","confidence_rationale":"Tier 2 / Strong — transplantation establishes cell-autonomy, replicated across labs","pmids":["15156142"],"is_preprint":false},{"year":2005,"finding":"Gli3 and Plzf cooperate genetically for proximal limb patterning; Gli3−/−;Plzf−/− double-mutant embryos specifically lose proximal (but not distal) cartilage condensations in the hindlimb, correlating with death of Bmpr1b-expressing proximal mesenchymal cells. This cooperation is independent of known P-D patterning markers.","method":"Double knockout mouse generation, genetic epistasis, in situ hybridization, histology","journal":"Nature","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic epistasis with double-mutant mice and defined cellular phenotype","pmids":["16015334"],"is_preprint":false},{"year":2007,"finding":"PLZF directly represses transcription of the Kit gene in spermatogonia; a discrete PLZF binding site in the kit promoter is bound by PLZF in vivo (ChIP) and in vitro; a 3-bp mutation in this site abolishes repression. Plzf−/− undifferentiated spermatogonia show significantly increased kit expression.","method":"Chromatin immunoprecipitation, electrophoretic mobility shift assay, promoter-reporter assay, site-directed mutagenesis, qRT-PCR in Plzf−/− cells","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 1 / Strong — in vitro and in vivo binding with mutagenesis and KO validation","pmids":["17664282"],"is_preprint":false},{"year":2008,"finding":"PLZF suppresses miR-146a transcription by direct interaction with the miR-146a promoter, and miR-146a in turn targets CXCR4 mRNA to impede its translation, establishing a PLZF→miR-146a→CXCR4 pathway controlling megakaryopoiesis. Rescue experiments confirmed the causal ordering.","method":"Reporter gene assay (promoter-luciferase), miRNA overexpression, siRNA knockdown, rescue experiments, flow cytometry","journal":"Nature cell biology","confidence":"High","confidence_rationale":"Tier 2 / Strong — promoter reporter, rescue experiments, and orthogonal knockdown/overexpression confirm pathway ordering","pmids":["18568019"],"is_preprint":false},{"year":2008,"finding":"PLZF is sumoylated at K242; sumoylation and ubiquitination at the same site are antagonistic. Oxidative stress (ROS from serum deprivation) inactivates SUMO-conjugating enzymes Uba2/Ubc9, shifts the balance toward ubiquitination, reduces PLZF stability and nuclear localization, decreases BID expression, and induces apoptosis.","method":"Site-directed mutagenesis, co-immunoprecipitation, subcellular fractionation, ROS measurement, apoptosis assays","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — mutagenesis of modification site with functional consequence, single lab","pmids":["18348865"],"is_preprint":false},{"year":2009,"finding":"PLZF-RARα directly interacts with the PRC1 Polycomb group protein Bmi-1 and forms a stable component of the PRC1 complex, leading to RA-insensitive ectopic recruitment of PRC1 to RA response elements. Bmi-1 is essential for the PLZF-RARα cellular transformation property.","method":"Co-immunoprecipitation, chromatin immunoprecipitation, Bmi-1 depletion/functional assay","journal":"Genes & development","confidence":"High","confidence_rationale":"Tier 2 / Strong — co-IP, ChIP, and functional rescue/depletion in same study","pmids":["19451220"],"is_preprint":false},{"year":2009,"finding":"PLZF represses c-Kit expression in CD34+ hematopoietic progenitors and during erythropoiesis independently of miR-221/222; PLZF transfection downregulates c-kit, inhibits erythroid proliferation and delays differentiation, while PLZF knockdown has opposite effects.","method":"Transfection/overexpression, siRNA knockdown, flow cytometry, qRT-PCR","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — gain- and loss-of-function with defined molecular target, single lab","pmids":["19421145"],"is_preprint":false},{"year":2009,"finding":"PLZF restricts proliferation and differentiation of myeloid progenitors. ERK1/2 activation by myeloid cytokines triggers nuclear export and inactivation of PLZF, augmenting mature cell production. Loss of ID2 relieves PLZF-mediated repression of differentiation, identifying ID2 as a functional PLZF target in myelopoiesis. PLZF represses GFI-1, C/EBPα, and LEF-1 transcription factors.","method":"PLZF overexpression/knockdown, promoter-binding analysis, cytokine stimulation, ChIP, ID2 rescue experiment","journal":"Genes & development","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and rescue experiments in human CD34+ cells, single lab","pmids":["19723763"],"is_preprint":false},{"year":2009,"finding":"LYRIC/AEG-1 interacts with PLZF (identified by yeast two-hybrid, confirmed in mammalian cells by co-IP); co-expression of LYRIC/AEG-1 with PLZF reduces PLZF binding to target promoters and decreases PLZF-mediated repression. Both proteins co-localize to nuclear bodies containing HDACs.","method":"Yeast two-hybrid, co-immunoprecipitation, chromatin immunoprecipitation, immunofluorescence co-localization","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — co-IP and ChIP with functional consequence, single lab","pmids":["19648967"],"is_preprint":false},{"year":2012,"finding":"Sall4 physically interacts with Plzf in differentiating spermatogonial progenitor cells; Sall4 sequesters Plzf to non-cognate chromatin to derepress Kit expression needed for differentiation, while Plzf displaces Sall4 from cognate chromatin to induce Sall1 expression.","method":"Co-immunoprecipitation, chromatin immunoprecipitation, genetic loss-of-function in mice","journal":"Cell stem cell","confidence":"High","confidence_rationale":"Tier 2 / Strong — co-IP, ChIP, and in vivo genetic evidence in same study","pmids":["22385656"],"is_preprint":false},{"year":2012,"finding":"PLZF controls expression of a limited set of NKT cell functional genes including c-Maf, Id2, ICOS, IL12rb1, and IL18r1; ectopic c-Maf expression complements the IL-4/IL-10 production defect of PLZF-deficient NKT cells, placing c-Maf downstream of PLZF.","method":"Microarray gene expression, lentiviral overexpression/rescue, flow cytometry in PLZF KO mice","journal":"Frontiers in immunology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — KO phenotype with defined downstream target and partial rescue, single lab","pmids":["23267359"],"is_preprint":false},{"year":2012,"finding":"Zbtb16 overexpression in brown adipocytes induces thermogenic gene program including fatty acid oxidation, glycolysis, and mitochondrial function genes; increases mitochondrial number, respiratory capacity, and uncoupling; and decreases triglyceride content.","method":"Adenoviral overexpression in brown adipocytes, Seahorse respirometry, mitochondrial quantification, gene expression","journal":"Nutrition & diabetes","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — gain-of-function with multiple metabolic readouts, single lab","pmids":["23446662"],"is_preprint":false},{"year":2012,"finding":"USP37 deubiquitinase interacts with PLZF/RARα through the PLZF moiety and stabilizes PLZF/RARα protein by reducing its poly-ubiquitination. USP37 depletion decreases PLZF/RARα half-life and alleviates PLZF/RARα-mediated target gene suppression and cell transformation.","method":"RNAi screen, co-immunoprecipitation, domain mapping, ubiquitination assay, pulse-chase protein stability, transformation assay","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — multiple orthogonal biochemical methods, single lab","pmids":["23208507"],"is_preprint":false},{"year":2013,"finding":"PLZF represses L1 retrotransposons by inducing DNA methylation at full-length L1 sequences, inhibiting L1 retrotransposition. PLZF also creates barrier-type boundaries at truncated L1 insertions in protein-coding genes. Cell stress releases PLZF-mediated repression, resulting in L1 activation and impaired spermatogenesis/myelopoiesis.","method":"Chromatin immunoprecipitation, bisulfite sequencing, retrotransposition assay, stress-induction experiments","journal":"The EMBO journal","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and bisulfite sequencing with functional retrotransposition assay, single lab","pmids":["23727884"],"is_preprint":false},{"year":2013,"finding":"PLZF is a downstream mediator of the PTEN/AKT pathway; FOXO3a (a transcription factor phosphorylated by PI3K/AKT) directly binds the PLZF promoter as shown by ChIP and luciferase reporter assay. PTEN restoration or PI3K inhibition increases PLZF expression.","method":"Chromatin immunoprecipitation, luciferase reporter assay, pharmacological PI3K inhibition, PTEN rescue","journal":"PloS one","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and reporter assay with pharmacological validation, single lab","pmids":["24339862"],"is_preprint":false},{"year":2013,"finding":"RARα-PLZF interacts with C/EBPα tethered to DNA and recruits HDAC1, causing histone H3 deacetylation at C/EBPα target loci and inhibiting C/EBPα-dependent myeloid differentiation. HDAC inhibitors partially restore C/EBPα target gene expression.","method":"ChIP, DNA capture assay, HDAC inhibitor treatment, gene expression analysis","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and DNA capture assays with functional pharmacological rescue, single lab","pmids":["23898169"],"is_preprint":false},{"year":2013,"finding":"Znf179 interacts with Plzf (identified by yeast two-hybrid, confirmed by co-IP); this interaction requires the first two zinc fingers of Plzf. Co-expression of Plzf causes nuclear translocation of Znf179 (from cytoplasm) and increases Plzf protein abundance.","method":"Yeast two-hybrid, co-immunoprecipitation, domain mapping, immunofluorescence","journal":"Journal of biomedical science","confidence":"Low","confidence_rationale":"Tier 3 / Weak — single co-IP, single lab, functional significance unclear","pmids":["24359566"],"is_preprint":false},{"year":2013,"finding":"PLZF promotes Eya2 expression; PLZF-RARA as well as PLZF alone immortalizes hematopoietic stem/progenitor cells through Eya2 upregulation. Eya2 depletion suppresses clonogenicity in PLZF-RARA-immortalized cells. PLZF immortalization requires the BTB/POZ domain.","method":"Expression profiling, retroviral transduction, shRNA knockdown, colony formation assay, BTB domain deletion mutant","journal":"Molecular and cellular biology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — loss-of-function with domain deletion and rescue, single lab","pmids":["28416638"],"is_preprint":false},{"year":2013,"finding":"PLZF directly represses Kit, Stra8, Sohlh2, and Dmrt1 promoters in spermatogonial progenitor cells as shown by ChIP-qPCR and dual luciferase assay; knockdown of PLZF upregulates all four genes.","method":"Chromatin immunoprecipitation-qPCR, dual luciferase reporter assay, siRNA knockdown","journal":"Journal of cellular physiology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and reporter assay with KD validation, single lab","pmids":["31541472"],"is_preprint":false},{"year":2013,"finding":"PLZF loss-of-function leads to hematopoietic stem cell (HSC) lineage skewing from lymphopoiesis toward myelopoiesis, increased long-term HSC pool size, decreased repopulation potential, and a G1-S transition defect in cell cycle progression. These effects are associated with a transcriptional signature of stemness loss.","method":"Zbtb16lu/lu mouse model, transplantation assay, cell cycle analysis, transcriptomic profiling","journal":"Blood","confidence":"High","confidence_rationale":"Tier 2 / Strong — in vivo transplantation and cell cycle assays with molecular profiling in defined KO model","pmids":["26941402"],"is_preprint":false},{"year":2015,"finding":"ZBTB16 acts as the substrate receptor of a ZBTB16-Cullin3-Roc1 E3 ubiquitin ligase complex that ubiquitinates and targets Atg14L for proteasomal degradation. GPCR agonists suppress autophagy by activating this pathway to reduce Atg14L levels.","method":"Co-immunoprecipitation, ubiquitination assay, proteasome inhibitor treatment, GPCR agonist treatment, in vitro degradation assay","journal":"eLife","confidence":"High","confidence_rationale":"Tier 1 / Strong — reconstituted E3 ligase complex with ubiquitination assay and multiple functional readouts","pmids":["25821988"],"is_preprint":false},{"year":2015,"finding":"Let-7 miRNAs directly target Zbtb16 mRNA to post-transcriptionally repress PLZF expression during NKT thymocyte development; upregulation of let-7 by IL-15, vitamin D, and retinoic acid drives NKT1 differentiation, while maintained high PLZF drives NKT2/NKT17 fates.","method":"Reporter assay for miRNA targeting, genetic let-7 deletion/overexpression, cytokine stimulation, flow cytometry","journal":"Nature immunology","confidence":"High","confidence_rationale":"Tier 2 / Strong — direct miRNA target validation with genetic models and functional cytokine assays","pmids":["25848867"],"is_preprint":false},{"year":2015,"finding":"Signaling from TLR or TNF-α receptors activates CaMK2, which activates HAT1; HAT1 then directly acetylates PLZF, promoting assembly of a repressor complex containing HDAC3 and NF-κB p50, which limits NF-κB transcriptional responses and inflammatory cytokine production.","method":"Co-immunoprecipitation, kinase assay, acetylation assay, site-directed mutagenesis of key PLZF/HAT1 residues, siRNA knockdown, cytokine measurement","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 1 / Strong — enzymatic acetylation assay with mutagenesis, complex reconstitution, and functional cytokine readout","pmids":["25865065"],"is_preprint":false},{"year":2015,"finding":"PLZF binds enhancer-like sites ~9-10 and ~13-14 kb upstream of the CCR6 transcription start site in human Th17 cells; PLZF knockdown downregulates CCR6 and other Th17-associated genes; PLZF and RORC cross-regulate each other and PLZF binds the RORC promoter.","method":"ChIP for histone marks and PLZF, siRNA knockdown, gene expression analysis","journal":"Journal of immunology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and KD with defined target genes, single lab","pmids":["25833398"],"is_preprint":false},{"year":2016,"finding":"PLZF binds and directly regulates genes encoding cytokine receptors, homing/adhesion receptors, and T-helper-specific transcription factor genes in NKT cells; PLZF binds and suppresses Bach2 transcription. ChIP-seq and microarray analysis defined the multilayered transcriptional architecture.","method":"Biotinylation-based ChIP-seq, microarray gene expression, PLZF-transgenic thymocytes","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 / Strong — genome-wide ChIP-seq with expression validation in two cell systems","pmids":["27325774"],"is_preprint":false},{"year":2016,"finding":"PLZF genome-wide binding in THY1+ spermatogonia (ChIP-seq) identified 4176 PLZF-bound genes preferentially at promoters; PLZF and SALL4 share 1295 targets, with PLZF motifs predominant at shared sites. PLZF and SALL4 knockdown suppresses both self-renewal and differentiation gene targets.","method":"ChIP-seq, motif analysis, siRNA knockdown, RNA-seq","journal":"Development","confidence":"High","confidence_rationale":"Tier 2 / Strong — genome-wide ChIP-seq with expression validation and loss-of-function, single lab but multiple orthogonal methods","pmids":["27068105"],"is_preprint":false},{"year":2017,"finding":"A Runx1-bound enhancer within the Zbtb16 locus is the critical cis-regulatory element controlling PLZF expression in innate and innate-like lymphoid lineages; CRISPR/Cas9 deletion of this enhancer abolishes PLZF expression in these lineages. Runx1 binding sites within the enhancer are required.","method":"CRISPR/Cas9 enhancer deletion in mice, ATAC-seq, ChIP-seq for Runx1","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — in vivo CRISPR deletion with ChIP-seq validation, genome-wide accessibility profiling","pmids":["29038474"],"is_preprint":false},{"year":2018,"finding":"PLZF is co-recruited with EZH2 at PLZF target gene loci independently of PRC2/SUZ12 and H3K27me3; this EZH2-PLZF co-occupancy correlates with H3K4me3 and active transcription. Removal of EZH2 increases PLZF binding and increases expression of PLZF target genes, suggesting non-canonical EZH2 activity restrains PLZF's activating function.","method":"ChIP-seq for PLZF, EZH2, SUZ12, H3K27me3, H3K4me3; EZH2 depletion; gene expression analysis","journal":"Nucleic acids research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genome-wide ChIP-seq with KD, but non-canonical mechanism is single-lab observation","pmids":["29425303"],"is_preprint":false},{"year":2018,"finding":"Bcl11b directly represses Zbtb16 (PLZF) in pro-T cells; deletion of Bcl11b derepresses PLZF, which then activates an alternative developmental program. Proteomics showed Bcl11b associates with cofactors recruited to Zbtb16 locus; Runx1 collaborates with Bcl11b for repression.","method":"In vivo stage-specific deletion, ChIP-seq, proteomics, gene expression profiling","journal":"Nature immunology","confidence":"High","confidence_rationale":"Tier 2 / Strong — in vivo deletion, ChIP-seq, and proteomics in combination","pmids":["30374131"],"is_preprint":false},{"year":2019,"finding":"PLZF is recruited to osteogenic enhancers during hMSC osteogenic differentiation, influencing H3K27 acetylation and expression of nearby osteogenic genes. The ZBTB16 locus is repressed by Polycomb/H3K27me3 in naive hMSCs; upon differentiation, JMJD3 is recruited and H3K27ac is gained. A PLZF-bound latent enhancer within the ZBTB16 locus loops to the NNMT promoter, increasing NNMT expression and reducing SAM levels required for osteogenesis.","method":"ChIP-seq, H3K27me3/H3K27ac profiling, PLZF knockdown, chromosome conformation capture, NNMT expression analysis","journal":"eLife","confidence":"High","confidence_rationale":"Tier 2 / Strong — genome-wide ChIP-seq with functional knockdown and 3D chromatin assay, multiple orthogonal methods","pmids":["30672466"],"is_preprint":false},{"year":2019,"finding":"PLZF regulates the proliferative activity of EOMES+ spermatogonial stem cells; in Plzf-null mice, EOMES+ SSCs exhibit higher proliferation index, leading to their exhaustion. Single-cell RNA-seq supports SSC hierarchical yet heterogeneous organization.","method":"GDNF transgenic model, lineage tracing, busulfan challenge, BrdU proliferation, scRNA-seq","journal":"eLife","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genetic model with lineage tracing and scRNA-seq, single lab","pmids":["31149899"],"is_preprint":false},{"year":2020,"finding":"ZBTB16 is a CRBN (cereblon) neosubstrate; cereblon modulators CC-3060 and CC-647 engage distinct zinc finger domains of ZBTB16 (first/third ZF) as structural degrons to promote its proteasomal degradation. The same degrons are present in ZBTB16-RARα and RARα-ZBTB16 fusion oncoproteins.","method":"Protein degradation assay, domain mapping with cereblon modulator compounds, biochemical binding assays","journal":"ACS chemical biology","confidence":"High","confidence_rationale":"Tier 1 / Moderate — structural degron mapping with multiple compounds and domain mutants, orthogonal biochemical methods","pmids":["33206504"],"is_preprint":false},{"year":2021,"finding":"PLZF/ZBTB16 is degraded by the CRL4CRBN E3 ubiquitin ligase in complex with thalidomide or 5-hydroxythalidomide; this degradation is dependent on the first and third zinc finger domains of PLZF. PLZF knockdown in chicken embryos causes short bone formation, and PLZF overexpression partially rescues thalidomide-induced teratogenic phenotypes.","method":"Human transcription factor array in wheat cell-free system, proteasome inhibitor treatment, domain deletion analysis, in ovo knockdown/overexpression, IHC in chicken embryos","journal":"The EMBO journal","confidence":"High","confidence_rationale":"Tier 1 / Strong — biochemical reconstitution with domain mapping, in vivo rescue experiment, and orthogonal system (chicken)","pmids":["33470442"],"is_preprint":false},{"year":2013,"finding":"8-CPT-cAMP combined with ATRA causes PKA-mediated phosphorylation of PLZF/RARα at Ser765, increasing dissociation of SMRT/NCoR corepressor from PLZF/RARα, reactivating RA target gene transcription, and promoting PLZF/RARα degradation.","method":"Phosphorylation assay, co-immunoprecipitation of corepressor, chromatin analysis, PLZF/RARα protein stability, in vivo mouse APL model","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 / Strong — biochemical phosphorylation mapping with co-IP, chromatin, and in vivo mouse model validation","pmids":["23382200"],"is_preprint":false},{"year":2023,"finding":"Nuclear ZBTB16 promotes SUMOylation of the inflammasome adaptor ASC, which controls inflammasome assembly. Ablation of ZBTB16 in mice reduces acute inflammatory pathogenesis in a Muckle-Wells syndrome model of constitutively active inflammasome.","method":"SUMOylation assay, co-immunoprecipitation, ZBTB16 knockout in Muckle-Wells mouse model, inflammasome activation assays","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — biochemical SUMOylation assay with in vivo genetic model and defined disease phenotype","pmids":["38123560"],"is_preprint":false},{"year":2024,"finding":"Glucocorticoids increase ZBTB16 expression in human cerebral organoids and mouse cortical progenitors, which in turn increases basal progenitors co-expressing PAX6 and EOMES, leading to increased neuron production. ZBTB16 mediates the effect of glucocorticoids on cortical neurogenesis.","method":"Human cerebral organoids, mouse model, siRNA/CRISPR knockdown of ZBTB16, cell-type-specific quantification, Mendelian randomization","journal":"Neuron","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — human organoid and mouse model with ZBTB16 knockdown, functional cellular phenotype, single lab","pmids":["38442714"],"is_preprint":false}],"current_model":"ZBTB16/PLZF is a BTB/POZ-zinc finger transcriptional repressor that homodimerizes via its BTB domain (crystal structure resolved) and recruits SMRT, NCoR, mSin3A, and HDAC1/3 corepressor complexes to silence target genes including Kit, cyclin A2, Hox genes, CRABPI, and differentiation factors; it also acts as a positive regulator of select targets (TpoR, CCR6, Eya2, NNMT via enhancer looping); its activity is modulated by post-translational modifications including cdc2-mediated phosphorylation, SUMO-1/ubiquitin antagonism at K242, and HAT1-mediated acetylation downstream of CaMK2/TLR signaling; it functions as the substrate receptor of a ZBTB16-Cullin3-Roc1 E3 ubiquitin ligase that degrades Atg14L to suppress autophagy downstream of GPCR signaling; and it is itself subject to CRL4(CRBN)-mediated proteasomal degradation triggered by thalidomide and cereblon modulators via its first and third zinc finger domains, with critical roles in spermatogonial stem cell self-renewal, innate lymphocyte effector programming, myeloid homeostasis, limb/axial skeletal patterning, osteogenesis, and inflammasome regulation."},"narrative":{"mechanistic_narrative":"ZBTB16 (PLZF) is a BTB/POZ-zinc finger transcription factor that governs stem/progenitor cell fate decisions across germline, hematopoietic, lymphoid, and skeletal lineages by binding defined DNA response elements and acting predominantly as a sequence-specific transcriptional repressor [PMID:12802276, PMID:17664282, PMID:27068105]. Its BTB/POZ domain forms an obligate homodimer presenting a corepressor-binding groove [PMID:9770450] and is required for DNA binding as a high-molecular-weight complex [PMID:10497277] and for recruitment of corepressor machinery including SMRT, mSin3A, and HDAC1 [PMID:9256429, PMID:9765306]; through these complexes PLZF silences targets such as Kit, cyclin A2, Hox genes, CRABPI, and differentiation-promoting factors (Stra8, Sohlh2, Dmrt1, GFI-1, C/EBPalpha, ID2) to restrain proliferation and differentiation [PMID:10023668, PMID:10835630, PMID:18000064, PMID:17664282, PMID:19723763, PMID:31541472]. In spermatogonia PLZF is intrinsically required for stem cell self-renewal, repressing Kit while being functionally counter-balanced by SALL4, with which it shares thousands of genomic targets [PMID:15156142, PMID:22385656, PMID:27068105]; in innate and innate-like lymphocytes a Runx1-dependent enhancer drives PLZF to program effector genes including c-Maf [PMID:23267359, PMID:27325774, PMID:29038474], and in hematopoietic stem cells PLZF maintains the lymphoid-biased, quiescent state [PMID:26941402]. Beyond transcription, PLZF serves as the substrate receptor of a ZBTB16-Cullin3-Roc1 E3 ubiquitin ligase that degrades Atg14L to suppress autophagy downstream of GPCR signaling [PMID:25821988], promotes SUMOylation of the inflammasome adaptor ASC [PMID:38123560], and in immune cells assembles an HDAC3/NF-kB p50 repressor complex after CaMK2-HAT1-mediated acetylation to limit inflammatory cytokine output [PMID:25865065]. PLZF activity is tuned by post-translational modification and protein stability, including ERK-driven nuclear export [PMID:19723763], SUMO/ubiquitin antagonism at K242 [PMID:18348865], and degradation by CRL4(CRBN) via its first and third zinc fingers, the molecular basis of thalidomide teratogenicity in skeletal patterning [PMID:33470442]. Consistent with its developmental roles, Plzf-null mice show homeotic skeletal transformations and limb patterning defects [PMID:10835630, PMID:16015334]. The oncogenic PLZF-RARalpha and reciprocal RARalpha-PLZF fusions of acute promyelocytic leukemia retain the PLZF corepressor and Polycomb/PRC1 (Bmi-1) recruitment functions, conferring retinoic-acid-resistant repression [PMID:9462740, PMID:19451220, PMID:23898169].","teleology":[{"year":1997,"claim":"Established the biochemical basis of PLZF-mediated repression by identifying SMRT corepressor recruitment through the POZ/BTB domain, and showed this interaction persists in the leukemogenic PLZF-RARalpha fusion.","evidence":"Co-immunoprecipitation, yeast two-hybrid, and domain mapping","pmids":["9256429"],"confidence":"High","gaps":["Did not resolve which target genes are repressed in vivo","Stoichiometry and additional corepressor components not defined"]},{"year":1998,"claim":"Extended the corepressor model to mSin3A and HDAC1 and crystallographically defined the BTB/POZ domain as an obligate homodimer with a corepressor-binding groove, explaining how PLZF nucleates HDAC complexes at chromatin.","evidence":"Co-IP/GST pulldown plus 1.9 A X-ray crystallography with nuclear localization assays","pmids":["9765306","9770450","9462740"],"confidence":"High","gaps":["Identity of the peptide bound in the dimer-interface groove not directly demonstrated","Distinction between native and PLZF-RARalpha corepressor interfaces only partially mapped"]},{"year":1999,"claim":"Linked PLZF DNA binding to a large multiprotein complex requiring the POZ domain and to cdc2-mediated phosphorylation, introducing post-translational control of its activity.","evidence":"EMSA, co-IP, phosphatase treatment, and reporter/proliferation assays","pmids":["10497277","10023668"],"confidence":"Medium","gaps":["Phosphosites not mapped","Direct cdc2 phosphorylation of PLZF not reconstituted"]},{"year":2000,"claim":"Defined the developmental requirement for Plzf in axial and limb skeletal patterning via regulation of AbdB Hox genes and Bmps, establishing it as a pro-apoptotic, growth-inhibitory factor in vivo.","evidence":"Zfp145 knockout mice with in situ hybridization and skeletal phenotyping","pmids":["10835630"],"confidence":"High","gaps":["Direct vs indirect regulation of Hox genes not fully separated","Mechanism of pro-apoptotic action undefined"]},{"year":2003,"claim":"Demonstrated direct, sequence-specific PLZF DNA binding at defined response elements (Hoxb2 enhancer) requiring the POZ domain for cooperative occupancy, confirming PLZF as a bona fide site-specific factor.","evidence":"EMSA, mutagenesis, and in vivo chick neural tube reporter assays","pmids":["12802276","18000064"],"confidence":"High","gaps":["Genome-wide binding landscape still unknown at this stage","Cooperating factors at most loci unidentified"]},{"year":2004,"claim":"Showed Plzf is cell-autonomously required for spermatogonial stem cell self-renewal, establishing its function in maintaining a tissue stem cell pool.","evidence":"Spermatogonial transplantation, positional cloning of luxoid, and Oct4 co-localization","pmids":["15156142"],"confidence":"High","gaps":["Direct transcriptional targets driving self-renewal not yet identified"]},{"year":2007,"claim":"Identified Kit as a direct repression target of PLZF in spermatogonia, providing a concrete molecular mechanism connecting PLZF to the self-renewal-versus-differentiation switch.","evidence":"ChIP, EMSA, promoter mutagenesis, and qRT-PCR in Plzf-null cells","pmids":["17664282"],"confidence":"High","gaps":["Whether Kit derepression alone accounts for the self-renewal defect not established"]},{"year":2009,"claim":"Defined PLZF as a brake on myeloid progenitor proliferation/differentiation controlled by ERK-driven nuclear export, and identified ID2, GFI-1, C/EBPalpha, and LEF-1 as functional targets.","evidence":"Overexpression/knockdown, ChIP, cytokine stimulation, and ID2 rescue in CD34+ cells","pmids":["19723763","19421145"],"confidence":"Medium","gaps":["ERK phosphorylation site on PLZF not mapped","Relative contribution of each target gene unresolved"]},{"year":2009,"claim":"Showed the oncogenic PLZF-RARalpha fusion stably integrates into PRC1 via Bmi-1, explaining retinoic-acid-resistant Polycomb recruitment and transformation in APL.","evidence":"Co-IP, ChIP, and Bmi-1 depletion functional assays","pmids":["19451220","9462740"],"confidence":"High","gaps":["Whether native PLZF also uses PRC1 not addressed here","Genome-wide PRC1 redistribution not mapped"]},{"year":2012,"claim":"Defined a SALL4-PLZF antagonism at chromatin that toggles Kit repression and the self-renewal/differentiation decision in spermatogonia.","evidence":"Co-IP, ChIP, and in vivo genetic loss-of-function in mice","pmids":["22385656"],"confidence":"High","gaps":["Structural basis of mutual chromatin displacement not resolved"]},{"year":2012,"claim":"Extended PLZF function to innate-like lymphocyte effector programming, placing c-Maf and Id2 downstream as mediators of NKT cytokine output.","evidence":"Microarray and lentiviral rescue in PLZF KO NKT cells","pmids":["23267359"],"confidence":"Medium","gaps":["Direct vs indirect target status of c-Maf not shown","Single rescue gene only partially restores phenotype"]},{"year":2013,"claim":"Identified multiple layers of PLZF protein-level and pathway-level regulation: SUMO/ubiquitin antagonism at K242 under oxidative stress, USP37-mediated stabilization of the fusion oncoprotein, PKA phosphorylation releasing corepressors, and FOXO3a/PTEN-AKT control of PLZF expression.","evidence":"Mutagenesis, ubiquitination/pulse-chase, phosphorylation assays, ChIP/reporter, and in vivo APL model","pmids":["18348865","23208507","23382200","24339862"],"confidence":"Medium","gaps":["Interplay among these modifications not integrated","Several mechanisms shown in single labs"]},{"year":2013,"claim":"Revealed a genome-protective role: PLZF represses L1 retrotransposons via directed DNA methylation, with stress releasing repression and impairing spermatogenesis and myelopoiesis.","evidence":"ChIP, bisulfite sequencing, and retrotransposition assays with stress induction","pmids":["23727884"],"confidence":"Medium","gaps":["DNA methyltransferase recruitment mechanism not defined","Single-lab observation"]},{"year":2015,"claim":"Demonstrated a non-transcriptional function: PLZF acts as the substrate receptor of a Cullin3-Roc1 E3 ligase that degrades Atg14L to suppress autophagy downstream of GPCR signaling.","evidence":"Co-IP, in vitro ubiquitination/degradation, proteasome inhibition, and GPCR agonist treatment","pmids":["25821988"],"confidence":"High","gaps":["Signal coupling GPCR activation to complex assembly not fully mapped","Whether additional substrates exist unknown"]},{"year":2015,"claim":"Defined PLZF acetylation by CaMK2-activated HAT1 downstream of TLR/TNF signaling, nucleating an HDAC3/NF-kB p50 repressor complex that dampens inflammatory cytokines, and identified let-7 miRNA control of PLZF directing NKT subset fate.","evidence":"Acetylation/kinase assays with mutagenesis and reconstitution; miRNA target reporter and genetic let-7 models","pmids":["25865065","25848867"],"confidence":"High","gaps":["Acetyl-site dependence of complex assembly partially characterized","Cell-type generality of the NF-kB repressor complex not tested"]},{"year":2016,"claim":"Mapped PLZF genome-wide binding in NKT cells and spermatogonia, defining its multilayered transcriptional architecture and extensive target overlap with SALL4.","evidence":"ChIP-seq with microarray/RNA-seq and knockdown in two cell systems","pmids":["27325774","27068105"],"confidence":"High","gaps":["Direct vs indirect targets within bound gene sets not fully separated","Activator vs repressor mode per locus not resolved"]},{"year":2017,"claim":"Identified the Runx1-bound enhancer in the Zbtb16 locus as the essential cis-element driving PLZF expression in innate lymphoid lineages, defining how PLZF expression itself is controlled.","evidence":"In vivo CRISPR enhancer deletion, ATAC-seq, and Runx1 ChIP-seq","pmids":["29038474","30374131"],"confidence":"High","gaps":["Upstream signals activating this enhancer not fully defined","Lineage-specific cofactors at the enhancer incomplete"]},{"year":2018,"claim":"Revealed non-canonical regulation in which EZH2 co-occupies PLZF target loci independently of PRC2 to restrain PLZF's activating function, expanding PLZF beyond a pure repressor.","evidence":"ChIP-seq for PLZF/EZH2/SUZ12/H3K27 marks with EZH2 depletion","pmids":["29425303"],"confidence":"Medium","gaps":["Mechanism of PRC2-independent EZH2 recruitment unknown","Single-lab observation"]},{"year":2019,"claim":"Defined a PLZF-driven enhancer-looping mechanism (to NNMT) controlling SAM levels during osteogenesis, and refined its role in restraining EOMES+ spermatogonial stem cell proliferation to prevent exhaustion.","evidence":"ChIP-seq, chromosome conformation capture, knockdown, and lineage tracing/scRNA-seq","pmids":["30672466","31149899"],"confidence":"High","gaps":["How PLZF selects looping partners not defined","Metabolic readout linking NNMT to differentiation correlative"]},{"year":2020,"claim":"Established ZBTB16 as a cereblon neosubstrate whose first and third zinc fingers act as structural degrons engaged by CRL4(CRBN) modulators, and showed thalidomide-induced degradation underlies skeletal teratogenicity.","evidence":"Degradation assays with multiple CRBN modulators, domain mapping, and in ovo knockdown/rescue in chicken embryos","pmids":["33206504","33470442"],"confidence":"High","gaps":["Physiological (drug-independent) ubiquitin ligase controlling ZBTB16 levels not identified","Quantitative contribution of ZBTB16 loss to full teratogenic spectrum partial"]},{"year":2023,"claim":"Identified a role for nuclear ZBTB16 in promoting ASC SUMOylation to enable inflammasome assembly, with loss reducing inflammatory pathogenesis in a Muckle-Wells model.","evidence":"SUMOylation/co-IP assays with ZBTB16 KO in a constitutively active inflammasome mouse model","pmids":["38123560"],"confidence":"High","gaps":["Whether ZBTB16 acts as a SUMO ligase or scaffold not resolved","Relationship to its transcriptional role unclear"]},{"year":2024,"claim":"Linked ZBTB16 to glucocorticoid-driven cortical neurogenesis, expanding its developmental roles into neural progenitor expansion.","evidence":"Human cerebral organoids and mouse models with ZBTB16 knockdown and Mendelian randomization","pmids":["38442714"],"confidence":"Medium","gaps":["Direct transcriptional targets in neural progenitors not identified","Single-lab study"]},{"year":null,"claim":"How PLZF integrates its dual identity as a sequence-specific transcription factor and as an E3-ligase substrate receptor/SUMO-pathway modulator, and what physiological signals govern switching among repression, activation, and protein-degradation functions, remains unresolved.","evidence":"","pmids":[],"confidence":"Medium","gaps":["No unified model of context-dependent activator vs repressor choice","Physiological E3 ligase regulating endogenous ZBTB16 levels unknown","Structural basis of substrate selection by the ZBTB16-Cullin3 complex undetermined"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[4,11,15,31,38]},{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[0,5,15,20,37]},{"term_id":"GO:0016874","term_label":"ligase activity","supporting_discovery_ids":[33]},{"term_id":"GO:0140096","term_label":"catalytic activity, acting on a protein","supporting_discovery_ids":[33,47]},{"term_id":"GO:0098772","term_label":"molecular function regulator activity","supporting_discovery_ids":[12,35]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[2,17,47]},{"term_id":"GO:0005654","term_label":"nucleoplasm","supporting_discovery_ids":[2,21]}],"pathway":[{"term_id":"R-HSA-74160","term_label":"Gene expression (Transcription)","supporting_discovery_ids":[0,15,37,38]},{"term_id":"R-HSA-4839726","term_label":"Chromatin organization","supporting_discovery_ids":[2,10,42]},{"term_id":"R-HSA-1266738","term_label":"Developmental Biology","supporting_discovery_ids":[6,14,13,48]},{"term_id":"R-HSA-168256","term_label":"Immune System","supporting_discovery_ids":[34,35,37,47]},{"term_id":"R-HSA-9612973","term_label":"Autophagy","supporting_discovery_ids":[33]},{"term_id":"R-HSA-392499","term_label":"Metabolism of proteins","supporting_discovery_ids":[33,44,45]},{"term_id":"R-HSA-1640170","term_label":"Cell Cycle","supporting_discovery_ids":[5,32]}],"complexes":["ZBTB16-Cullin3-Roc1 E3 ubiquitin ligase","PLZF/SMRT-mSin3A-HDAC corepressor complex","HAT1/HDAC3/NF-kB p50 repressor complex","PRC1 (Bmi-1, via PLZF-RARalpha fusion)"],"partners":["NCOR2","SIN3A","HDAC1","SALL4","GATA2","EZH2","BMI1","USP37"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"Q05516","full_name":"Zinc finger and BTB domain-containing protein 16","aliases":["Promyelocytic leukemia zinc finger protein","Zinc finger protein 145","Zinc finger protein PLZF"],"length_aa":673,"mass_kda":74.3,"function":"Acts as a transcriptional repressor (PubMed:10688654, PubMed:24359566). Transcriptional repression may be mediated through recruitment of histone deacetylases to target promoters (PubMed:10688654). May play a role in myeloid maturation and in the development and/or maintenance of other differentiated tissues. Probable substrate-recognition component of an E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins (PubMed:14528312)","subcellular_location":"Nucleus; Nucleus, nuclear body","url":"https://www.uniprot.org/uniprotkb/Q05516/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/ZBTB16","classification":"Not Classified","n_dependent_lines":4,"n_total_lines":1208,"dependency_fraction":0.0033112582781456954},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/ZBTB16","total_profiled":1310},"omim":[{"mim_id":"612447","title":"SKELETAL DEFECTS, GENITAL HYPOPLASIA, AND IMPAIRED INTELLECTUAL DEVELOPMENT","url":"https://www.omim.org/entry/612447"},{"mim_id":"612116","title":"UBIQUITIN-SPECIFIC PROTEASE 22; USP22","url":"https://www.omim.org/entry/612116"},{"mim_id":"610323","title":"METADHERIN; MTDH","url":"https://www.omim.org/entry/610323"},{"mim_id":"606599","title":"THIOREDOXIN-INTERACTING PROTEIN; TXNIP","url":"https://www.omim.org/entry/606599"},{"mim_id":"606025","title":"ZINC FINGER- AND BTB DOMAIN-CONTAINING PROTEIN 20; ZBTB20","url":"https://www.omim.org/entry/606025"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"","locations":[],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in many","driving_tissues":[],"url":"https://www.proteinatlas.org/search/ZBTB16"},"hgnc":{"alias_symbol":["PLZF"],"prev_symbol":["ZNF145"]},"alphafold":{"accession":"Q05516","domains":[{"cath_id":"-","chopping":"16-124","consensus_level":"high","plddt":52.9568,"start":16,"end":124},{"cath_id":"3.30.160","chopping":"458-515","consensus_level":"medium","plddt":62.4629,"start":458,"end":515},{"cath_id":"3.30.160.60","chopping":"532-670","consensus_level":"medium","plddt":77.2122,"start":532,"end":670}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q05516","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q05516-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q05516-F1-predicted_aligned_error_v6.png","plddt_mean":54.94},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=ZBTB16","jax_strain_url":"https://www.jax.org/strain/search?query=ZBTB16"},"sequence":{"accession":"Q05516","fasta_url":"https://rest.uniprot.org/uniprotkb/Q05516.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q05516/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q05516"}},"corpus_meta":[{"pmid":"15156142","id":"PMC_15156142","title":"Plzf 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mediates transcriptional repression and is retained in the PLZF-RARα fusion oncoprotein.\",\n      \"method\": \"Co-immunoprecipitation, yeast two-hybrid, domain mapping\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — reciprocal co-IP and domain mapping replicated across multiple labs (PMID:9256429, PMID:9765306, PMID:9462740)\",\n      \"pmids\": [\"9256429\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1998,\n      \"finding\": \"PLZF interacts with mSin3A and histone deacetylase-1 (HDAC1) in addition to SMRT; these corepressor interactions are mediated by distinct interfaces and differ between PLZF and the oncogenic PLZF-RARα chimera, which lacks several corepressor interaction sites present in native PLZF.\",\n      \"method\": \"Co-immunoprecipitation, GST pulldown, domain mapping\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — reciprocal co-IP with domain mapping, findings replicated in multiple labs\",\n      \"pmids\": [\"9765306\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1998,\n      \"finding\": \"The BTB/POZ domain of PLZF forms an obligate homodimer with an extensive hydrophobic interface; a surface-exposed groove at the dimer interface is lined with conserved residues suggestive of a corepressor peptide-binding site. The BTB domain directs PLZF to a nuclear punctate pattern and interacts with components of the histone deacetylase complex.\",\n      \"method\": \"X-ray crystallography at 1.9 Å resolution, nuclear localization experiments\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — crystal structure with functional validation of localization and HDAC complex interaction\",\n      \"pmids\": [\"9770450\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1998,\n      \"finding\": \"PLZF-RARα, unlike PML-RARα, forms RA-insensitive corepressor complexes via its PLZF moiety, explaining retinoic acid resistance. HDAC inhibitor TSA combined with RA can overcome the transcriptional repressor activity of both fusion proteins.\",\n      \"method\": \"Transgenic mouse models, co-immunoprecipitation, transcriptional reporter assays, TSA treatment\",\n      \"journal\": \"Nature genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — transgenic mouse models combined with biochemical co-IP, replicated across labs\",\n      \"pmids\": [\"9462740\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1999,\n      \"finding\": \"PLZF binds DNA as a high-molecular-weight (~600 kDa) complex whose formation requires the POZ/dimerization domain. PLZF co-immunoprecipitates with cdc2 kinase, is a phosphoprotein, and the PLZF-DNA complex is abolished by phosphatase treatment, suggesting cdc2-mediated phosphorylation modulates PLZF activity. RARα/PLZF does not complex with cdc2.\",\n      \"method\": \"Electrophoretic mobility shift assay, co-immunoprecipitation, biotin-streptavidin pulldown, phosphatase treatment\",\n      \"journal\": \"Nucleic acids research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal co-IP and biochemical assays, single lab\",\n      \"pmids\": [\"10497277\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1999,\n      \"finding\": \"PLZF binds and represses the cyclin A2 promoter, leading to growth suppression; expression of cyclin A2 reverts PLZF-mediated growth suppression in myeloid cells. The reciprocal fusion RARα-PLZF activates cyclin A2 transcription.\",\n      \"method\": \"Reporter gene assay, stable transfection, proliferation assay, promoter binding\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reporter assay and functional rescue experiment, single lab\",\n      \"pmids\": [\"10023668\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"Plzf acts as a growth-inhibitory and pro-apoptotic factor in the limb bud and regulates expression of AbdB Hox genes (Hoxd10-13) and Bmps in the developing limb; Zfp145−/− mice exhibit homeotic transformations of anterior skeletal elements and alterations in Hox gene expression.\",\n      \"method\": \"Knockout mouse generation, in situ hybridization, gene expression analysis\",\n      \"journal\": \"Nature genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — complete knockout with defined skeletal and molecular phenotype, replicated in follow-up studies\",\n      \"pmids\": [\"10835630\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2002,\n      \"finding\": \"PLZF physically interacts with GATA1 (co-immunoprecipitation in TF1 cells); co-expression of PLZF and GATA1 results in enhanced upregulation of megakaryocytic markers compared to either factor alone, suggesting a functional transcriptional complex. PLZF also activates the thrombopoietin receptor (TpoR) promoter through a direct PLZF DNA-binding site.\",\n      \"method\": \"Co-immunoprecipitation, reporter gene assay, deletion construct analysis, stable transfection\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP and functional reporter assay, single lab\",\n      \"pmids\": [\"12242665\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2002,\n      \"finding\": \"PLZF interacts with GATA-2 via the zinc finger region of GATA-2; this interaction modifies GATA-2 transactivation capacity. PLZF-RARα also associates with GATA-2, making GATA-dependent transcription responsive to RA plus TSA.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation, domain mapping, transcriptional reporter assay\",\n      \"journal\": \"Blood\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP with domain mapping and functional assay, single lab\",\n      \"pmids\": [\"11964310\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2002,\n      \"finding\": \"C. elegans EOR-1 (PLZF ortholog) acts downstream of ERK and Wnt/β-catenin signaling as a positive transcriptional regulator, functioning redundantly with the Mediator complex component SUR-2 and LIN-25; eor-1 mutants exhibit reduced Ras/Wnt pathway outputs.\",\n      \"method\": \"Genetic epistasis analysis, loss-of-function mutants, double mutant analysis in C. elegans\",\n      \"journal\": \"Genes & development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic epistasis with multiple double mutant combinations, well-controlled C. elegans study\",\n      \"pmids\": [\"12130541\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"PLZF directly represses the CRABPI locus through chromatin condensation propagated from a remote intronic PLZF binding element; the reciprocal fusion RARα-PLZF binds this remote element and recruits p300 to induce promoter hypomethylation and CRABPI upregulation.\",\n      \"method\": \"Chromatin immunoprecipitation, reporter assay, methylation analysis, ChIP\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and methylation assays, functional reporter, single lab\",\n      \"pmids\": [\"18000064\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"PLZF binds directly to a defined PLZF response element (PLZF-RE) in the Hoxb2 r3/r5 enhancer, cooperates with the A/T-rich Krox20 motif for in vivo enhancer activity, and the POZ domain is required for cooperative binding. The APL-associated RARα-PLZF fusion binds the PLZF-RE more strongly than wild-type PLZF.\",\n      \"method\": \"Electrophoretic mobility shift assay, reporter gene assay, in vivo chick neural tube reporter, mutagenesis\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — in vitro binding with mutagenesis and in vivo reporter validation, single lab\",\n      \"pmids\": [\"12802276\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"PLZF directly interacts with RAR via its N-terminal zinc finger domain (binding to the RAR ligand-binding domain), independently of ligand. PLZF inhibits RXR-RAR heterodimerization both in vitro and in intact cells, thereby reducing transcriptional activity of RXR-RAR as well as ERα and GR.\",\n      \"method\": \"Yeast two-hybrid, GST pulldown, co-immunoprecipitation, domain mapping, transcriptional reporter assay\",\n      \"journal\": \"Nuclear receptor\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — GST pulldown and co-IP with domain mapping and functional reporter, single lab\",\n      \"pmids\": [\"14521715\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2004,\n      \"finding\": \"Plzf is required intrinsically in adult male germline stem cells for self-renewal; the luxoid mutation introduces a nonsense mutation in Plzf, and transplantation showed the defect is cell-autonomous. Plzf is co-expressed with Oct4 in undifferentiated spermatogonia.\",\n      \"method\": \"Spermatogonial transplantation, positional cloning, immunofluorescence co-localization\",\n      \"journal\": \"Nature genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — transplantation establishes cell-autonomy, replicated across labs\",\n      \"pmids\": [\"15156142\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"Gli3 and Plzf cooperate genetically for proximal limb patterning; Gli3−/−;Plzf−/− double-mutant embryos specifically lose proximal (but not distal) cartilage condensations in the hindlimb, correlating with death of Bmpr1b-expressing proximal mesenchymal cells. This cooperation is independent of known P-D patterning markers.\",\n      \"method\": \"Double knockout mouse generation, genetic epistasis, in situ hybridization, histology\",\n      \"journal\": \"Nature\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic epistasis with double-mutant mice and defined cellular phenotype\",\n      \"pmids\": [\"16015334\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"PLZF directly represses transcription of the Kit gene in spermatogonia; a discrete PLZF binding site in the kit promoter is bound by PLZF in vivo (ChIP) and in vitro; a 3-bp mutation in this site abolishes repression. Plzf−/− undifferentiated spermatogonia show significantly increased kit expression.\",\n      \"method\": \"Chromatin immunoprecipitation, electrophoretic mobility shift assay, promoter-reporter assay, site-directed mutagenesis, qRT-PCR in Plzf−/− cells\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — in vitro and in vivo binding with mutagenesis and KO validation\",\n      \"pmids\": [\"17664282\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"PLZF suppresses miR-146a transcription by direct interaction with the miR-146a promoter, and miR-146a in turn targets CXCR4 mRNA to impede its translation, establishing a PLZF→miR-146a→CXCR4 pathway controlling megakaryopoiesis. Rescue experiments confirmed the causal ordering.\",\n      \"method\": \"Reporter gene assay (promoter-luciferase), miRNA overexpression, siRNA knockdown, rescue experiments, flow cytometry\",\n      \"journal\": \"Nature cell biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — promoter reporter, rescue experiments, and orthogonal knockdown/overexpression confirm pathway ordering\",\n      \"pmids\": [\"18568019\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"PLZF is sumoylated at K242; sumoylation and ubiquitination at the same site are antagonistic. Oxidative stress (ROS from serum deprivation) inactivates SUMO-conjugating enzymes Uba2/Ubc9, shifts the balance toward ubiquitination, reduces PLZF stability and nuclear localization, decreases BID expression, and induces apoptosis.\",\n      \"method\": \"Site-directed mutagenesis, co-immunoprecipitation, subcellular fractionation, ROS measurement, apoptosis assays\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — mutagenesis of modification site with functional consequence, single lab\",\n      \"pmids\": [\"18348865\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"PLZF-RARα directly interacts with the PRC1 Polycomb group protein Bmi-1 and forms a stable component of the PRC1 complex, leading to RA-insensitive ectopic recruitment of PRC1 to RA response elements. Bmi-1 is essential for the PLZF-RARα cellular transformation property.\",\n      \"method\": \"Co-immunoprecipitation, chromatin immunoprecipitation, Bmi-1 depletion/functional assay\",\n      \"journal\": \"Genes & development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — co-IP, ChIP, and functional rescue/depletion in same study\",\n      \"pmids\": [\"19451220\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"PLZF represses c-Kit expression in CD34+ hematopoietic progenitors and during erythropoiesis independently of miR-221/222; PLZF transfection downregulates c-kit, inhibits erythroid proliferation and delays differentiation, while PLZF knockdown has opposite effects.\",\n      \"method\": \"Transfection/overexpression, siRNA knockdown, flow cytometry, qRT-PCR\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — gain- and loss-of-function with defined molecular target, single lab\",\n      \"pmids\": [\"19421145\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"PLZF restricts proliferation and differentiation of myeloid progenitors. ERK1/2 activation by myeloid cytokines triggers nuclear export and inactivation of PLZF, augmenting mature cell production. Loss of ID2 relieves PLZF-mediated repression of differentiation, identifying ID2 as a functional PLZF target in myelopoiesis. PLZF represses GFI-1, C/EBPα, and LEF-1 transcription factors.\",\n      \"method\": \"PLZF overexpression/knockdown, promoter-binding analysis, cytokine stimulation, ChIP, ID2 rescue experiment\",\n      \"journal\": \"Genes & development\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and rescue experiments in human CD34+ cells, single lab\",\n      \"pmids\": [\"19723763\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"LYRIC/AEG-1 interacts with PLZF (identified by yeast two-hybrid, confirmed in mammalian cells by co-IP); co-expression of LYRIC/AEG-1 with PLZF reduces PLZF binding to target promoters and decreases PLZF-mediated repression. Both proteins co-localize to nuclear bodies containing HDACs.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation, chromatin immunoprecipitation, immunofluorescence co-localization\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — co-IP and ChIP with functional consequence, single lab\",\n      \"pmids\": [\"19648967\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"Sall4 physically interacts with Plzf in differentiating spermatogonial progenitor cells; Sall4 sequesters Plzf to non-cognate chromatin to derepress Kit expression needed for differentiation, while Plzf displaces Sall4 from cognate chromatin to induce Sall1 expression.\",\n      \"method\": \"Co-immunoprecipitation, chromatin immunoprecipitation, genetic loss-of-function in mice\",\n      \"journal\": \"Cell stem cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — co-IP, ChIP, and in vivo genetic evidence in same study\",\n      \"pmids\": [\"22385656\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"PLZF controls expression of a limited set of NKT cell functional genes including c-Maf, Id2, ICOS, IL12rb1, and IL18r1; ectopic c-Maf expression complements the IL-4/IL-10 production defect of PLZF-deficient NKT cells, placing c-Maf downstream of PLZF.\",\n      \"method\": \"Microarray gene expression, lentiviral overexpression/rescue, flow cytometry in PLZF KO mice\",\n      \"journal\": \"Frontiers in immunology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — KO phenotype with defined downstream target and partial rescue, single lab\",\n      \"pmids\": [\"23267359\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"Zbtb16 overexpression in brown adipocytes induces thermogenic gene program including fatty acid oxidation, glycolysis, and mitochondrial function genes; increases mitochondrial number, respiratory capacity, and uncoupling; and decreases triglyceride content.\",\n      \"method\": \"Adenoviral overexpression in brown adipocytes, Seahorse respirometry, mitochondrial quantification, gene expression\",\n      \"journal\": \"Nutrition & diabetes\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — gain-of-function with multiple metabolic readouts, single lab\",\n      \"pmids\": [\"23446662\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"USP37 deubiquitinase interacts with PLZF/RARα through the PLZF moiety and stabilizes PLZF/RARα protein by reducing its poly-ubiquitination. USP37 depletion decreases PLZF/RARα half-life and alleviates PLZF/RARα-mediated target gene suppression and cell transformation.\",\n      \"method\": \"RNAi screen, co-immunoprecipitation, domain mapping, ubiquitination assay, pulse-chase protein stability, transformation assay\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — multiple orthogonal biochemical methods, single lab\",\n      \"pmids\": [\"23208507\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"PLZF represses L1 retrotransposons by inducing DNA methylation at full-length L1 sequences, inhibiting L1 retrotransposition. PLZF also creates barrier-type boundaries at truncated L1 insertions in protein-coding genes. Cell stress releases PLZF-mediated repression, resulting in L1 activation and impaired spermatogenesis/myelopoiesis.\",\n      \"method\": \"Chromatin immunoprecipitation, bisulfite sequencing, retrotransposition assay, stress-induction experiments\",\n      \"journal\": \"The EMBO journal\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and bisulfite sequencing with functional retrotransposition assay, single lab\",\n      \"pmids\": [\"23727884\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"PLZF is a downstream mediator of the PTEN/AKT pathway; FOXO3a (a transcription factor phosphorylated by PI3K/AKT) directly binds the PLZF promoter as shown by ChIP and luciferase reporter assay. PTEN restoration or PI3K inhibition increases PLZF expression.\",\n      \"method\": \"Chromatin immunoprecipitation, luciferase reporter assay, pharmacological PI3K inhibition, PTEN rescue\",\n      \"journal\": \"PloS one\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and reporter assay with pharmacological validation, single lab\",\n      \"pmids\": [\"24339862\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"RARα-PLZF interacts with C/EBPα tethered to DNA and recruits HDAC1, causing histone H3 deacetylation at C/EBPα target loci and inhibiting C/EBPα-dependent myeloid differentiation. HDAC inhibitors partially restore C/EBPα target gene expression.\",\n      \"method\": \"ChIP, DNA capture assay, HDAC inhibitor treatment, gene expression analysis\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and DNA capture assays with functional pharmacological rescue, single lab\",\n      \"pmids\": [\"23898169\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Znf179 interacts with Plzf (identified by yeast two-hybrid, confirmed by co-IP); this interaction requires the first two zinc fingers of Plzf. Co-expression of Plzf causes nuclear translocation of Znf179 (from cytoplasm) and increases Plzf protein abundance.\",\n      \"method\": \"Yeast two-hybrid, co-immunoprecipitation, domain mapping, immunofluorescence\",\n      \"journal\": \"Journal of biomedical science\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — single co-IP, single lab, functional significance unclear\",\n      \"pmids\": [\"24359566\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"PLZF promotes Eya2 expression; PLZF-RARA as well as PLZF alone immortalizes hematopoietic stem/progenitor cells through Eya2 upregulation. Eya2 depletion suppresses clonogenicity in PLZF-RARA-immortalized cells. PLZF immortalization requires the BTB/POZ domain.\",\n      \"method\": \"Expression profiling, retroviral transduction, shRNA knockdown, colony formation assay, BTB domain deletion mutant\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — loss-of-function with domain deletion and rescue, single lab\",\n      \"pmids\": [\"28416638\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"PLZF directly represses Kit, Stra8, Sohlh2, and Dmrt1 promoters in spermatogonial progenitor cells as shown by ChIP-qPCR and dual luciferase assay; knockdown of PLZF upregulates all four genes.\",\n      \"method\": \"Chromatin immunoprecipitation-qPCR, dual luciferase reporter assay, siRNA knockdown\",\n      \"journal\": \"Journal of cellular physiology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and reporter assay with KD validation, single lab\",\n      \"pmids\": [\"31541472\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"PLZF loss-of-function leads to hematopoietic stem cell (HSC) lineage skewing from lymphopoiesis toward myelopoiesis, increased long-term HSC pool size, decreased repopulation potential, and a G1-S transition defect in cell cycle progression. These effects are associated with a transcriptional signature of stemness loss.\",\n      \"method\": \"Zbtb16lu/lu mouse model, transplantation assay, cell cycle analysis, transcriptomic profiling\",\n      \"journal\": \"Blood\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — in vivo transplantation and cell cycle assays with molecular profiling in defined KO model\",\n      \"pmids\": [\"26941402\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"ZBTB16 acts as the substrate receptor of a ZBTB16-Cullin3-Roc1 E3 ubiquitin ligase complex that ubiquitinates and targets Atg14L for proteasomal degradation. GPCR agonists suppress autophagy by activating this pathway to reduce Atg14L levels.\",\n      \"method\": \"Co-immunoprecipitation, ubiquitination assay, proteasome inhibitor treatment, GPCR agonist treatment, in vitro degradation assay\",\n      \"journal\": \"eLife\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — reconstituted E3 ligase complex with ubiquitination assay and multiple functional readouts\",\n      \"pmids\": [\"25821988\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"Let-7 miRNAs directly target Zbtb16 mRNA to post-transcriptionally repress PLZF expression during NKT thymocyte development; upregulation of let-7 by IL-15, vitamin D, and retinoic acid drives NKT1 differentiation, while maintained high PLZF drives NKT2/NKT17 fates.\",\n      \"method\": \"Reporter assay for miRNA targeting, genetic let-7 deletion/overexpression, cytokine stimulation, flow cytometry\",\n      \"journal\": \"Nature immunology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — direct miRNA target validation with genetic models and functional cytokine assays\",\n      \"pmids\": [\"25848867\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"Signaling from TLR or TNF-α receptors activates CaMK2, which activates HAT1; HAT1 then directly acetylates PLZF, promoting assembly of a repressor complex containing HDAC3 and NF-κB p50, which limits NF-κB transcriptional responses and inflammatory cytokine production.\",\n      \"method\": \"Co-immunoprecipitation, kinase assay, acetylation assay, site-directed mutagenesis of key PLZF/HAT1 residues, siRNA knockdown, cytokine measurement\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — enzymatic acetylation assay with mutagenesis, complex reconstitution, and functional cytokine readout\",\n      \"pmids\": [\"25865065\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"PLZF binds enhancer-like sites ~9-10 and ~13-14 kb upstream of the CCR6 transcription start site in human Th17 cells; PLZF knockdown downregulates CCR6 and other Th17-associated genes; PLZF and RORC cross-regulate each other and PLZF binds the RORC promoter.\",\n      \"method\": \"ChIP for histone marks and PLZF, siRNA knockdown, gene expression analysis\",\n      \"journal\": \"Journal of immunology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and KD with defined target genes, single lab\",\n      \"pmids\": [\"25833398\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"PLZF binds and directly regulates genes encoding cytokine receptors, homing/adhesion receptors, and T-helper-specific transcription factor genes in NKT cells; PLZF binds and suppresses Bach2 transcription. ChIP-seq and microarray analysis defined the multilayered transcriptional architecture.\",\n      \"method\": \"Biotinylation-based ChIP-seq, microarray gene expression, PLZF-transgenic thymocytes\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genome-wide ChIP-seq with expression validation in two cell systems\",\n      \"pmids\": [\"27325774\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"PLZF genome-wide binding in THY1+ spermatogonia (ChIP-seq) identified 4176 PLZF-bound genes preferentially at promoters; PLZF and SALL4 share 1295 targets, with PLZF motifs predominant at shared sites. PLZF and SALL4 knockdown suppresses both self-renewal and differentiation gene targets.\",\n      \"method\": \"ChIP-seq, motif analysis, siRNA knockdown, RNA-seq\",\n      \"journal\": \"Development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genome-wide ChIP-seq with expression validation and loss-of-function, single lab but multiple orthogonal methods\",\n      \"pmids\": [\"27068105\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"A Runx1-bound enhancer within the Zbtb16 locus is the critical cis-regulatory element controlling PLZF expression in innate and innate-like lymphoid lineages; CRISPR/Cas9 deletion of this enhancer abolishes PLZF expression in these lineages. Runx1 binding sites within the enhancer are required.\",\n      \"method\": \"CRISPR/Cas9 enhancer deletion in mice, ATAC-seq, ChIP-seq for Runx1\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — in vivo CRISPR deletion with ChIP-seq validation, genome-wide accessibility profiling\",\n      \"pmids\": [\"29038474\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"PLZF is co-recruited with EZH2 at PLZF target gene loci independently of PRC2/SUZ12 and H3K27me3; this EZH2-PLZF co-occupancy correlates with H3K4me3 and active transcription. Removal of EZH2 increases PLZF binding and increases expression of PLZF target genes, suggesting non-canonical EZH2 activity restrains PLZF's activating function.\",\n      \"method\": \"ChIP-seq for PLZF, EZH2, SUZ12, H3K27me3, H3K4me3; EZH2 depletion; gene expression analysis\",\n      \"journal\": \"Nucleic acids research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genome-wide ChIP-seq with KD, but non-canonical mechanism is single-lab observation\",\n      \"pmids\": [\"29425303\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"Bcl11b directly represses Zbtb16 (PLZF) in pro-T cells; deletion of Bcl11b derepresses PLZF, which then activates an alternative developmental program. Proteomics showed Bcl11b associates with cofactors recruited to Zbtb16 locus; Runx1 collaborates with Bcl11b for repression.\",\n      \"method\": \"In vivo stage-specific deletion, ChIP-seq, proteomics, gene expression profiling\",\n      \"journal\": \"Nature immunology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — in vivo deletion, ChIP-seq, and proteomics in combination\",\n      \"pmids\": [\"30374131\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"PLZF is recruited to osteogenic enhancers during hMSC osteogenic differentiation, influencing H3K27 acetylation and expression of nearby osteogenic genes. The ZBTB16 locus is repressed by Polycomb/H3K27me3 in naive hMSCs; upon differentiation, JMJD3 is recruited and H3K27ac is gained. A PLZF-bound latent enhancer within the ZBTB16 locus loops to the NNMT promoter, increasing NNMT expression and reducing SAM levels required for osteogenesis.\",\n      \"method\": \"ChIP-seq, H3K27me3/H3K27ac profiling, PLZF knockdown, chromosome conformation capture, NNMT expression analysis\",\n      \"journal\": \"eLife\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genome-wide ChIP-seq with functional knockdown and 3D chromatin assay, multiple orthogonal methods\",\n      \"pmids\": [\"30672466\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"PLZF regulates the proliferative activity of EOMES+ spermatogonial stem cells; in Plzf-null mice, EOMES+ SSCs exhibit higher proliferation index, leading to their exhaustion. Single-cell RNA-seq supports SSC hierarchical yet heterogeneous organization.\",\n      \"method\": \"GDNF transgenic model, lineage tracing, busulfan challenge, BrdU proliferation, scRNA-seq\",\n      \"journal\": \"eLife\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic model with lineage tracing and scRNA-seq, single lab\",\n      \"pmids\": [\"31149899\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"ZBTB16 is a CRBN (cereblon) neosubstrate; cereblon modulators CC-3060 and CC-647 engage distinct zinc finger domains of ZBTB16 (first/third ZF) as structural degrons to promote its proteasomal degradation. The same degrons are present in ZBTB16-RARα and RARα-ZBTB16 fusion oncoproteins.\",\n      \"method\": \"Protein degradation assay, domain mapping with cereblon modulator compounds, biochemical binding assays\",\n      \"journal\": \"ACS chemical biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — structural degron mapping with multiple compounds and domain mutants, orthogonal biochemical methods\",\n      \"pmids\": [\"33206504\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"PLZF/ZBTB16 is degraded by the CRL4CRBN E3 ubiquitin ligase in complex with thalidomide or 5-hydroxythalidomide; this degradation is dependent on the first and third zinc finger domains of PLZF. PLZF knockdown in chicken embryos causes short bone formation, and PLZF overexpression partially rescues thalidomide-induced teratogenic phenotypes.\",\n      \"method\": \"Human transcription factor array in wheat cell-free system, proteasome inhibitor treatment, domain deletion analysis, in ovo knockdown/overexpression, IHC in chicken embryos\",\n      \"journal\": \"The EMBO journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — biochemical reconstitution with domain mapping, in vivo rescue experiment, and orthogonal system (chicken)\",\n      \"pmids\": [\"33470442\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"8-CPT-cAMP combined with ATRA causes PKA-mediated phosphorylation of PLZF/RARα at Ser765, increasing dissociation of SMRT/NCoR corepressor from PLZF/RARα, reactivating RA target gene transcription, and promoting PLZF/RARα degradation.\",\n      \"method\": \"Phosphorylation assay, co-immunoprecipitation of corepressor, chromatin analysis, PLZF/RARα protein stability, in vivo mouse APL model\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — biochemical phosphorylation mapping with co-IP, chromatin, and in vivo mouse model validation\",\n      \"pmids\": [\"23382200\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"Nuclear ZBTB16 promotes SUMOylation of the inflammasome adaptor ASC, which controls inflammasome assembly. Ablation of ZBTB16 in mice reduces acute inflammatory pathogenesis in a Muckle-Wells syndrome model of constitutively active inflammasome.\",\n      \"method\": \"SUMOylation assay, co-immunoprecipitation, ZBTB16 knockout in Muckle-Wells mouse model, inflammasome activation assays\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — biochemical SUMOylation assay with in vivo genetic model and defined disease phenotype\",\n      \"pmids\": [\"38123560\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"Glucocorticoids increase ZBTB16 expression in human cerebral organoids and mouse cortical progenitors, which in turn increases basal progenitors co-expressing PAX6 and EOMES, leading to increased neuron production. ZBTB16 mediates the effect of glucocorticoids on cortical neurogenesis.\",\n      \"method\": \"Human cerebral organoids, mouse model, siRNA/CRISPR knockdown of ZBTB16, cell-type-specific quantification, Mendelian randomization\",\n      \"journal\": \"Neuron\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — human organoid and mouse model with ZBTB16 knockdown, functional cellular phenotype, single lab\",\n      \"pmids\": [\"38442714\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"ZBTB16/PLZF is a BTB/POZ-zinc finger transcriptional repressor that homodimerizes via its BTB domain (crystal structure resolved) and recruits SMRT, NCoR, mSin3A, and HDAC1/3 corepressor complexes to silence target genes including Kit, cyclin A2, Hox genes, CRABPI, and differentiation factors; it also acts as a positive regulator of select targets (TpoR, CCR6, Eya2, NNMT via enhancer looping); its activity is modulated by post-translational modifications including cdc2-mediated phosphorylation, SUMO-1/ubiquitin antagonism at K242, and HAT1-mediated acetylation downstream of CaMK2/TLR signaling; it functions as the substrate receptor of a ZBTB16-Cullin3-Roc1 E3 ubiquitin ligase that degrades Atg14L to suppress autophagy downstream of GPCR signaling; and it is itself subject to CRL4(CRBN)-mediated proteasomal degradation triggered by thalidomide and cereblon modulators via its first and third zinc finger domains, with critical roles in spermatogonial stem cell self-renewal, innate lymphocyte effector programming, myeloid homeostasis, limb/axial skeletal patterning, osteogenesis, and inflammasome regulation.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"ZBTB16 (PLZF) is a BTB/POZ-zinc finger transcription factor that governs stem/progenitor cell fate decisions across germline, hematopoietic, lymphoid, and skeletal lineages by binding defined DNA response elements and acting predominantly as a sequence-specific transcriptional repressor [#11, #15, #38]. Its BTB/POZ domain forms an obligate homodimer presenting a corepressor-binding groove [#2] and is required for DNA binding as a high-molecular-weight complex [#4] and for recruitment of corepressor machinery including SMRT, mSin3A, and HDAC1 [#0, #1]; through these complexes PLZF silences targets such as Kit, cyclin A2, Hox genes, CRABPI, and differentiation-promoting factors (Stra8, Sohlh2, Dmrt1, GFI-1, C/EBPalpha, ID2) to restrain proliferation and differentiation [#5, #6, #10, #15, #20, #31]. In spermatogonia PLZF is intrinsically required for stem cell self-renewal, repressing Kit while being functionally counter-balanced by SALL4, with which it shares thousands of genomic targets [#13, #22, #38]; in innate and innate-like lymphocytes a Runx1-dependent enhancer drives PLZF to program effector genes including c-Maf [#23, #37, #39], and in hematopoietic stem cells PLZF maintains the lymphoid-biased, quiescent state [#32]. Beyond transcription, PLZF serves as the substrate receptor of a ZBTB16-Cullin3-Roc1 E3 ubiquitin ligase that degrades Atg14L to suppress autophagy downstream of GPCR signaling [#33], promotes SUMOylation of the inflammasome adaptor ASC [#47], and in immune cells assembles an HDAC3/NF-kB p50 repressor complex after CaMK2-HAT1-mediated acetylation to limit inflammatory cytokine output [#35]. PLZF activity is tuned by post-translational modification and protein stability, including ERK-driven nuclear export [#20], SUMO/ubiquitin antagonism at K242 [#17], and degradation by CRL4(CRBN) via its first and third zinc fingers, the molecular basis of thalidomide teratogenicity in skeletal patterning [#45]. Consistent with its developmental roles, Plzf-null mice show homeotic skeletal transformations and limb patterning defects [#6, #14]. The oncogenic PLZF-RARalpha and reciprocal RARalpha-PLZF fusions of acute promyelocytic leukemia retain the PLZF corepressor and Polycomb/PRC1 (Bmi-1) recruitment functions, conferring retinoic-acid-resistant repression [#3, #18, #28].\",\n  \"teleology\": [\n    {\n      \"year\": 1997,\n      \"claim\": \"Established the biochemical basis of PLZF-mediated repression by identifying SMRT corepressor recruitment through the POZ/BTB domain, and showed this interaction persists in the leukemogenic PLZF-RARalpha fusion.\",\n      \"evidence\": \"Co-immunoprecipitation, yeast two-hybrid, and domain mapping\",\n      \"pmids\": [\"9256429\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Did not resolve which target genes are repressed in vivo\", \"Stoichiometry and additional corepressor components not defined\"]\n    },\n    {\n      \"year\": 1998,\n      \"claim\": \"Extended the corepressor model to mSin3A and HDAC1 and crystallographically defined the BTB/POZ domain as an obligate homodimer with a corepressor-binding groove, explaining how PLZF nucleates HDAC complexes at chromatin.\",\n      \"evidence\": \"Co-IP/GST pulldown plus 1.9 A X-ray crystallography with nuclear localization assays\",\n      \"pmids\": [\"9765306\", \"9770450\", \"9462740\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Identity of the peptide bound in the dimer-interface groove not directly demonstrated\", \"Distinction between native and PLZF-RARalpha corepressor interfaces only partially mapped\"]\n    },\n    {\n      \"year\": 1999,\n      \"claim\": \"Linked PLZF DNA binding to a large multiprotein complex requiring the POZ domain and to cdc2-mediated phosphorylation, introducing post-translational control of its activity.\",\n      \"evidence\": \"EMSA, co-IP, phosphatase treatment, and reporter/proliferation assays\",\n      \"pmids\": [\"10497277\", \"10023668\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Phosphosites not mapped\", \"Direct cdc2 phosphorylation of PLZF not reconstituted\"]\n    },\n    {\n      \"year\": 2000,\n      \"claim\": \"Defined the developmental requirement for Plzf in axial and limb skeletal patterning via regulation of AbdB Hox genes and Bmps, establishing it as a pro-apoptotic, growth-inhibitory factor in vivo.\",\n      \"evidence\": \"Zfp145 knockout mice with in situ hybridization and skeletal phenotyping\",\n      \"pmids\": [\"10835630\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct vs indirect regulation of Hox genes not fully separated\", \"Mechanism of pro-apoptotic action undefined\"]\n    },\n    {\n      \"year\": 2003,\n      \"claim\": \"Demonstrated direct, sequence-specific PLZF DNA binding at defined response elements (Hoxb2 enhancer) requiring the POZ domain for cooperative occupancy, confirming PLZF as a bona fide site-specific factor.\",\n      \"evidence\": \"EMSA, mutagenesis, and in vivo chick neural tube reporter assays\",\n      \"pmids\": [\"12802276\", \"18000064\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Genome-wide binding landscape still unknown at this stage\", \"Cooperating factors at most loci unidentified\"]\n    },\n    {\n      \"year\": 2004,\n      \"claim\": \"Showed Plzf is cell-autonomously required for spermatogonial stem cell self-renewal, establishing its function in maintaining a tissue stem cell pool.\",\n      \"evidence\": \"Spermatogonial transplantation, positional cloning of luxoid, and Oct4 co-localization\",\n      \"pmids\": [\"15156142\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct transcriptional targets driving self-renewal not yet identified\"]\n    },\n    {\n      \"year\": 2007,\n      \"claim\": \"Identified Kit as a direct repression target of PLZF in spermatogonia, providing a concrete molecular mechanism connecting PLZF to the self-renewal-versus-differentiation switch.\",\n      \"evidence\": \"ChIP, EMSA, promoter mutagenesis, and qRT-PCR in Plzf-null cells\",\n      \"pmids\": [\"17664282\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether Kit derepression alone accounts for the self-renewal defect not established\"]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Defined PLZF as a brake on myeloid progenitor proliferation/differentiation controlled by ERK-driven nuclear export, and identified ID2, GFI-1, C/EBPalpha, and LEF-1 as functional targets.\",\n      \"evidence\": \"Overexpression/knockdown, ChIP, cytokine stimulation, and ID2 rescue in CD34+ cells\",\n      \"pmids\": [\"19723763\", \"19421145\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"ERK phosphorylation site on PLZF not mapped\", \"Relative contribution of each target gene unresolved\"]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Showed the oncogenic PLZF-RARalpha fusion stably integrates into PRC1 via Bmi-1, explaining retinoic-acid-resistant Polycomb recruitment and transformation in APL.\",\n      \"evidence\": \"Co-IP, ChIP, and Bmi-1 depletion functional assays\",\n      \"pmids\": [\"19451220\", \"9462740\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether native PLZF also uses PRC1 not addressed here\", \"Genome-wide PRC1 redistribution not mapped\"]\n    },\n    {\n      \"year\": 2012,\n      \"claim\": \"Defined a SALL4-PLZF antagonism at chromatin that toggles Kit repression and the self-renewal/differentiation decision in spermatogonia.\",\n      \"evidence\": \"Co-IP, ChIP, and in vivo genetic loss-of-function in mice\",\n      \"pmids\": [\"22385656\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Structural basis of mutual chromatin displacement not resolved\"]\n    },\n    {\n      \"year\": 2012,\n      \"claim\": \"Extended PLZF function to innate-like lymphocyte effector programming, placing c-Maf and Id2 downstream as mediators of NKT cytokine output.\",\n      \"evidence\": \"Microarray and lentiviral rescue in PLZF KO NKT cells\",\n      \"pmids\": [\"23267359\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct vs indirect target status of c-Maf not shown\", \"Single rescue gene only partially restores phenotype\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Identified multiple layers of PLZF protein-level and pathway-level regulation: SUMO/ubiquitin antagonism at K242 under oxidative stress, USP37-mediated stabilization of the fusion oncoprotein, PKA phosphorylation releasing corepressors, and FOXO3a/PTEN-AKT control of PLZF expression.\",\n      \"evidence\": \"Mutagenesis, ubiquitination/pulse-chase, phosphorylation assays, ChIP/reporter, and in vivo APL model\",\n      \"pmids\": [\"18348865\", \"23208507\", \"23382200\", \"24339862\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Interplay among these modifications not integrated\", \"Several mechanisms shown in single labs\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Revealed a genome-protective role: PLZF represses L1 retrotransposons via directed DNA methylation, with stress releasing repression and impairing spermatogenesis and myelopoiesis.\",\n      \"evidence\": \"ChIP, bisulfite sequencing, and retrotransposition assays with stress induction\",\n      \"pmids\": [\"23727884\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"DNA methyltransferase recruitment mechanism not defined\", \"Single-lab observation\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Demonstrated a non-transcriptional function: PLZF acts as the substrate receptor of a Cullin3-Roc1 E3 ligase that degrades Atg14L to suppress autophagy downstream of GPCR signaling.\",\n      \"evidence\": \"Co-IP, in vitro ubiquitination/degradation, proteasome inhibition, and GPCR agonist treatment\",\n      \"pmids\": [\"25821988\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Signal coupling GPCR activation to complex assembly not fully mapped\", \"Whether additional substrates exist unknown\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Defined PLZF acetylation by CaMK2-activated HAT1 downstream of TLR/TNF signaling, nucleating an HDAC3/NF-kB p50 repressor complex that dampens inflammatory cytokines, and identified let-7 miRNA control of PLZF directing NKT subset fate.\",\n      \"evidence\": \"Acetylation/kinase assays with mutagenesis and reconstitution; miRNA target reporter and genetic let-7 models\",\n      \"pmids\": [\"25865065\", \"25848867\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Acetyl-site dependence of complex assembly partially characterized\", \"Cell-type generality of the NF-kB repressor complex not tested\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Mapped PLZF genome-wide binding in NKT cells and spermatogonia, defining its multilayered transcriptional architecture and extensive target overlap with SALL4.\",\n      \"evidence\": \"ChIP-seq with microarray/RNA-seq and knockdown in two cell systems\",\n      \"pmids\": [\"27325774\", \"27068105\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct vs indirect targets within bound gene sets not fully separated\", \"Activator vs repressor mode per locus not resolved\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Identified the Runx1-bound enhancer in the Zbtb16 locus as the essential cis-element driving PLZF expression in innate lymphoid lineages, defining how PLZF expression itself is controlled.\",\n      \"evidence\": \"In vivo CRISPR enhancer deletion, ATAC-seq, and Runx1 ChIP-seq\",\n      \"pmids\": [\"29038474\", \"30374131\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Upstream signals activating this enhancer not fully defined\", \"Lineage-specific cofactors at the enhancer incomplete\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Revealed non-canonical regulation in which EZH2 co-occupies PLZF target loci independently of PRC2 to restrain PLZF's activating function, expanding PLZF beyond a pure repressor.\",\n      \"evidence\": \"ChIP-seq for PLZF/EZH2/SUZ12/H3K27 marks with EZH2 depletion\",\n      \"pmids\": [\"29425303\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Mechanism of PRC2-independent EZH2 recruitment unknown\", \"Single-lab observation\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Defined a PLZF-driven enhancer-looping mechanism (to NNMT) controlling SAM levels during osteogenesis, and refined its role in restraining EOMES+ spermatogonial stem cell proliferation to prevent exhaustion.\",\n      \"evidence\": \"ChIP-seq, chromosome conformation capture, knockdown, and lineage tracing/scRNA-seq\",\n      \"pmids\": [\"30672466\", \"31149899\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How PLZF selects looping partners not defined\", \"Metabolic readout linking NNMT to differentiation correlative\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Established ZBTB16 as a cereblon neosubstrate whose first and third zinc fingers act as structural degrons engaged by CRL4(CRBN) modulators, and showed thalidomide-induced degradation underlies skeletal teratogenicity.\",\n      \"evidence\": \"Degradation assays with multiple CRBN modulators, domain mapping, and in ovo knockdown/rescue in chicken embryos\",\n      \"pmids\": [\"33206504\", \"33470442\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Physiological (drug-independent) ubiquitin ligase controlling ZBTB16 levels not identified\", \"Quantitative contribution of ZBTB16 loss to full teratogenic spectrum partial\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Identified a role for nuclear ZBTB16 in promoting ASC SUMOylation to enable inflammasome assembly, with loss reducing inflammatory pathogenesis in a Muckle-Wells model.\",\n      \"evidence\": \"SUMOylation/co-IP assays with ZBTB16 KO in a constitutively active inflammasome mouse model\",\n      \"pmids\": [\"38123560\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether ZBTB16 acts as a SUMO ligase or scaffold not resolved\", \"Relationship to its transcriptional role unclear\"]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"Linked ZBTB16 to glucocorticoid-driven cortical neurogenesis, expanding its developmental roles into neural progenitor expansion.\",\n      \"evidence\": \"Human cerebral organoids and mouse models with ZBTB16 knockdown and Mendelian randomization\",\n      \"pmids\": [\"38442714\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct transcriptional targets in neural progenitors not identified\", \"Single-lab study\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How PLZF integrates its dual identity as a sequence-specific transcription factor and as an E3-ligase substrate receptor/SUMO-pathway modulator, and what physiological signals govern switching among repression, activation, and protein-degradation functions, remains unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No unified model of context-dependent activator vs repressor choice\", \"Physiological E3 ligase regulating endogenous ZBTB16 levels unknown\", \"Structural basis of substrate selection by the ZBTB16-Cullin3 complex undetermined\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [4, 11, 15, 31, 38]},\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [0, 5, 15, 20, 37]},\n      {\"term_id\": \"GO:0016874\", \"supporting_discovery_ids\": [33]},\n      {\"term_id\": \"GO:0140096\", \"supporting_discovery_ids\": [33, 47]},\n      {\"term_id\": \"GO:0098772\", \"supporting_discovery_ids\": [12, 35]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [2, 17, 47]},\n      {\"term_id\": \"GO:0005654\", \"supporting_discovery_ids\": [2, 21]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [0, 15, 37, 38]},\n      {\"term_id\": \"R-HSA-4839726\", \"supporting_discovery_ids\": [2, 10, 42]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [6, 14, 13, 48]},\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [34, 35, 37, 47]},\n      {\"term_id\": \"R-HSA-9612973\", \"supporting_discovery_ids\": [33]},\n      {\"term_id\": \"R-HSA-392499\", \"supporting_discovery_ids\": [33, 44, 45]},\n      {\"term_id\": \"R-HSA-1640170\", \"supporting_discovery_ids\": [5, 32]}\n    ],\n    \"complexes\": [\n      \"ZBTB16-Cullin3-Roc1 E3 ubiquitin ligase\",\n      \"PLZF/SMRT-mSin3A-HDAC corepressor complex\",\n      \"HAT1/HDAC3/NF-kB p50 repressor complex\",\n      \"PRC1 (Bmi-1, via PLZF-RARalpha fusion)\"\n    ],\n    \"partners\": [\n      \"NCOR2\",\n      \"SIN3A\",\n      \"HDAC1\",\n      \"SALL4\",\n      \"GATA2\",\n      \"EZH2\",\n      \"BMI1\",\n      \"USP37\"\n    ],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":7,"faith_total":7,"faith_pct":100.0}}