{"gene":"ZEB2","run_date":"2026-04-28T23:00:24","timeline":{"discoveries":[{"year":2001,"finding":"ZEB2/SIP1 directly represses E-cadherin transcription by binding to both conserved E2-boxes of the minimal E-cadherin promoter, and conditional expression in E-cadherin-positive MDCK cells abrogates E-cadherin-mediated intercellular adhesion and induces invasion.","method":"Promoter binding assays, E-box mutagenesis, conditional expression in MDCK cells, invasion assays","journal":"Molecular cell","confidence":"High","confidence_rationale":"Tier 1 — direct promoter binding with mutagenesis, functional rescue/loss-of-function, replicated across multiple labs","pmids":["11430829"],"is_preprint":false},{"year":2008,"finding":"ZEB2/SIP1 (together with ZEB1) represses the miR-200 family promoter by binding to conserved ZEB-type E-box elements, establishing a double-negative feedback loop: miR-200 family suppresses ZEB1/ZEB2, and ZEB1/ZEB2 suppress miR-200 family expression.","method":"Promoter deletion analysis, ChIP, reporter assays, enforced expression/inhibition of miRNAs","journal":"Cancer research","confidence":"High","confidence_rationale":"Tier 1-2 — multiple orthogonal methods (ChIP, reporter, promoter deletion), independently replicated","pmids":["18829540","18376396"],"is_preprint":false},{"year":2008,"finding":"ZEB2/SIP1 directly represses cyclin D1 by binding to three sequence elements in the cyclin D1 gene promoter, resulting in Rb hypophosphorylation and G1 accumulation in cells undergoing EMT.","method":"ChIP, promoter binding, exogenous cyclin D1 rescue, RNAi, cell cycle analysis","journal":"Molecular biology of the cell","confidence":"High","confidence_rationale":"Tier 1 — direct promoter binding, mutagenesis-like rescue, multiple orthogonal methods in single study","pmids":["17855508"],"is_preprint":false},{"year":2007,"finding":"miR-200b post-transcriptionally represses ZFHX1B/ZEB2 via multiple sequence elements in the 3'-UTR; overexpression of miR-200b reduces endogenous ZEB2 and activates the E-cadherin promoter.","method":"3'-UTR reporter assays, overexpression/inhibition of miR-200b, E-cadherin promoter activity assays","journal":"RNA","confidence":"High","confidence_rationale":"Tier 1-2 — direct 3'UTR binding demonstrated by reporter assay, endogenous protein knockdown shown, replicated by multiple labs","pmids":["17585049"],"is_preprint":false},{"year":2008,"finding":"ZEB2/SIP1 associates with the NuRD corepressor complex through its N-terminal domain; an MWS patient mutation in this domain abolishes NuRD recruitment and reduces transcriptional repression of the XBMP4 promoter and E-cadherin, and impairs neural induction in Xenopus.","method":"Mass spectrometry of affinity-purified complexes, Co-IP, transcriptional reporter assays, Xenopus animal cap assays","journal":"Human molecular genetics","confidence":"High","confidence_rationale":"Tier 1-2 — MS-based interactome, functional domain mutagenesis (patient mutation), and multiple orthogonal assays","pmids":["18182442"],"is_preprint":false},{"year":2006,"finding":"ZEB2/SIP1 induces vimentin expression in breast tumor cells and promotes cell migration; RNAi-mediated SIP1 knockdown decreases vimentin mRNA and protein, and SIP1-induced migration does not involve the β-catenin/TCF pathway.","method":"cDNA transfection, RNAi, Boyden chamber migration assay, RT-PCR, Western blot, TOP-FLASH reporter assay","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2 — clean KD/OE with defined phenotype and pathway exclusion, single lab","pmids":["16568083"],"is_preprint":false},{"year":2011,"finding":"ZEB2/SIP1 protein stability is regulated by the F-box ubiquitin ligase Ppa (Partner of paired) through the ubiquitin-proteasome system, which also targets Twist and Snail family EMT factors.","method":"Protein stability assays, proteasome inhibitor treatment, epistasis in Xenopus, domain mapping","journal":"The Journal of cell biology","confidence":"Medium","confidence_rationale":"Tier 2 — direct functional epistasis and domain-level analysis, single lab","pmids":["21727196"],"is_preprint":false},{"year":2013,"finding":"ZEB2 cooperates with Sp1 to directly transactivate cadherin-11 and integrin α5 promoters in an Sp1-dependent but Smad- and E-box-independent manner, and ZEB2 enhances Sp1 protein stability; this ZEB2-Sp1 axis drives cancer cell invasion.","method":"ChIP, promoter reporter assays, co-immunoprecipitation, protein stability assays, invasion assays, immunofluorescence on human tumor samples","journal":"Carcinogenesis","confidence":"Medium","confidence_rationale":"Tier 2 — ChIP and reporter assays demonstrate direct binding, protein stability shown biochemically, single lab","pmids":["24130169"],"is_preprint":false},{"year":2013,"finding":"ZEB2/SIP1 directly activates ETS1 transcription by binding E-box sequences on the ETS1 promoter; ETS1 in turn maintains ZEB2-induced EMT and upregulates TWIST and MMP9.","method":"ChIP, luciferase reporter assays, ZEB2 knockdown/inducible expression, migration and invasion assays","journal":"Molecular carcinogenesis","confidence":"Medium","confidence_rationale":"Tier 2 — direct promoter binding by ChIP, inducible system, single lab","pmids":["30790340"],"is_preprint":false},{"year":2010,"finding":"ZEB2/SIP1 limits mesendoderm-inducing effects of Activin-Nodal/SMAD2/3 signaling in human embryonic stem cells, directing cells toward neuroectoderm; Activin-Nodal signaling in turn cooperates with NANOG, OCT4, and SOX2 to control SIP1 expression.","method":"Loss-of-function and gain-of-function in hESCs, epistasis with Activin-Nodal signaling components, differentiation assays","journal":"Cell stem cell","confidence":"Medium","confidence_rationale":"Tier 2 — genetic epistasis with signaling pathway, multiple pluripotency factors tested, single lab","pmids":["20074535"],"is_preprint":false},{"year":2004,"finding":"ZEB2/SIP1 overexpression in hepatocellular carcinoma cells suppresses E-cadherin and upregulates MMP-1, MMP-2, and MT1-MMP, thereby enhancing cancer cell invasion.","method":"Stable transfection, RT-PCR for MMPs, invasion assays, morphology assessment","journal":"British journal of cancer","confidence":"Medium","confidence_rationale":"Tier 2 — stable gain-of-function with defined MMP transcriptional targets, single lab","pmids":["15026811"],"is_preprint":false},{"year":2016,"finding":"ZEB2 transcriptionally represses genes regulating myeloid differentiation and its depletion causes aberrant differentiation of AML cells; epigenetic silencing of the miR-200 family by DNA methylation controls ZEB2 expression in AML.","method":"Genome-scale shRNA screens in 17 AML cell lines and murine AML model, gene expression profiling, miR-200 methylation analysis","journal":"Blood","confidence":"Medium","confidence_rationale":"Tier 2 — genome-scale screen validated in orthogonal mouse model, expression profiling, but direct target promoter binding not shown","pmids":["27756750"],"is_preprint":false},{"year":2016,"finding":"Zeb2 is essential for Schwann cell differentiation and myelination; Schwann cells lacking Zeb2 fail to repress Sox2 and Ednrb (identified as Zeb2 target genes) and cannot progress through lineage differentiation. Zeb2 acts as an 'inhibitor of inhibitors' of myelination.","method":"Conditional Schwann cell-specific Zeb2 knockout in mice, peripheral nerve phenotyping, RNA-seq, target gene identification","journal":"Nature neuroscience","confidence":"High","confidence_rationale":"Tier 2 — cell-type-specific KO with severe myelination phenotype, transcriptome-based target identification, replicated in adult deletion model","pmids":["27294512"],"is_preprint":false},{"year":2013,"finding":"Sip1 (Zeb2) is required cell-autonomously for cortical interneuron migration; Sip1 knockout interneurons fail to migrate to the neocortex due to elevated expression of the repulsive receptor Unc5b. Reducing Unc5b in Sip1 knockout tissue rescues the migration defect.","method":"Conditional Sip1 knockout, RNA sequencing, focal electroporation of Unc5b, genetic rescue by Unc5b knockdown","journal":"Neuron","confidence":"High","confidence_rationale":"Tier 2 — genetic epistasis (Unc5b rescue), RNA-seq, in vivo conditional KO, replicated by electroporation","pmids":["23312517"],"is_preprint":false},{"year":2015,"finding":"Sip1 (Zeb2) mediates axonal growth and ipsilateral cortical branching through its direct downstream effector ninein, a microtubule-binding protein that affects microtubule stability and dynamics.","method":"Conditional Sip1 knockout in postmitotic neurons, mosaic deletion, axonal tracing, ChIP to confirm ninein as direct target, ninein rescue experiments","journal":"Neuron","confidence":"High","confidence_rationale":"Tier 1-2 — direct target gene identification by ChIP, genetic rescue with effector gene, in vivo phenotype","pmids":["25741725"],"is_preprint":false},{"year":2016,"finding":"In hypoxia, HIF-1α induces ZEB2, which directly binds the ephrinB2 promoter to repress ephrinB2 expression, thereby promoting glioma cell invasiveness; this mechanism is activated after anti-angiogenic treatment.","method":"Promoter binding assays, hypoxia treatment, HIF-1α induction, ZEB2 disruption, in vivo glioma invasion model","journal":"Nature communications","confidence":"Medium","confidence_rationale":"Tier 2 — direct promoter binding demonstrated, in vivo validation, single lab","pmids":["27470974"],"is_preprint":false},{"year":2017,"finding":"ZEB2 directly binds to the HBV core promoter and represses HBV transcription and replication; mutation of the ZEB2 binding site in the core promoter abolishes ZEB2-mediated inhibition.","method":"ChIP, promoter reporter assays, site-directed mutagenesis, HBV replication intermediates quantification","journal":"Oncotarget","confidence":"High","confidence_rationale":"Tier 1 — direct promoter binding with mutagenesis of binding site, functional replication assays","pmids":["26895378"],"is_preprint":false},{"year":2017,"finding":"ZEB2 interacts with KDM1A (LSD1), a lysine-specific demethylase, and T-ALL cells with elevated ZEB2 are critically dependent on KDM1A activity for survival.","method":"Protein interaction studies (co-IP), pharmacological KDM1A inhibition, shRNA knockdown in mouse and human T-ALL","journal":"Blood","confidence":"Medium","confidence_rationale":"Tier 2-3 — protein interaction identified, functional dependence shown, single lab","pmids":["28069602"],"is_preprint":false},{"year":2021,"finding":"Cardiomyocyte-specific ZEB2 induces expression of paracrine factors Thymosin β4 (TMSB4) and Prothymosin α (PTMA), which stimulate endothelial cell migration and angiogenesis after myocardial infarction; cardiomyocyte-specific ZEB2 deletion impairs cardiac function post-MI.","method":"Cardiomyocyte-specific conditional KO and overexpression in mice, single-cell sequencing, endothelial migration assays, in vivo therapeutic ZEB2 delivery","journal":"Nature communications","confidence":"Medium","confidence_rationale":"Tier 2 — cell-type-specific KO and OE with defined paracrine effectors, in vivo validation, single lab","pmids":["33398012"],"is_preprint":false},{"year":2022,"finding":"Zeb2 regulates smooth muscle cell phenotypic transition during atherosclerosis through chromatin remodeling that disrupts Notch and TGF-β signaling; SMC-specific Zeb2 loss prevents contractile-to-fibroblast-like transition and accelerates chondromyocyte formation.","method":"CRISPR-Cas9 genome and epigenome editing, single-cell ATAC-seq and RNA-seq, SMC-specific conditional KO in murine atherosclerosis model","journal":"Circulation","confidence":"Medium","confidence_rationale":"Tier 2 — CRISPR editing identifies causal enhancers, scATAC-seq mechanistic, single lab","pmids":["34990206"],"is_preprint":false},{"year":2023,"finding":"ZEB2 recruits the HDAC1-NuRD complex to the CTH gene promoter to repress CSE (cystathionine γ-lyase) transcription in endothelial cells, reducing H2S production and PDI S-sulfhydration, thereby driving aortic aneurysm and dissection.","method":"Co-immunoprecipitation with mass spectrometry, ChIP, endothelial-specific HDAC1 KO mice, PDI S-sulfhydration assays, AAD mouse models","journal":"Circulation","confidence":"High","confidence_rationale":"Tier 1-2 — co-IP/MS, ChIP, direct promoter repression, in vivo conditional KO, multiple orthogonal methods","pmids":["36951067"],"is_preprint":false},{"year":2018,"finding":"ZEB2 promotes terminal effector CD8+ T cell differentiation, while ZEB1 promotes memory formation; TGF-β induces ZEB1 in memory cells and selectively inhibits ZEB2; the miR-200 family inversely regulates ZEB1 and ZEB2 in CD8+ T cells.","method":"Conditional KO of Zeb1 and Zeb2 in CD8+ T cells, cytokine treatment, miR-200 family KO, adoptive transfer experiments","journal":"The Journal of experimental medicine","confidence":"Medium","confidence_rationale":"Tier 2 — cell-type-specific KO with functional phenotype, pathway dissection, single lab","pmids":["29449309"],"is_preprint":false},{"year":2016,"finding":"Zeb2 inactivation in the bone marrow results in differentiation defects across multiple hematopoietic lineages and perturbs JAK-STAT and ERK signaling pathways; Zeb2 is required for M-CSF receptor expression in monocyte development and for plasmacytoid DC development.","method":"Inducible Zeb2 gene deletion, flow cytometry, global gene expression profiling, intracellular signaling analysis","journal":"Blood; PNAS","confidence":"Medium","confidence_rationale":"Tier 2 — genetic KO with transcriptomic pathway analysis, replicated independently in two papers","pmids":["27683414","27930303"],"is_preprint":false},{"year":2019,"finding":"An Nfil3-Zeb2-Id2 genetic circuit controls cDC1 development: NFIL3 represses Zeb2 expression, low Zeb2 allows Id2 to rise, and this progression commits CDPs to the cDC1 lineage; Nfil3 acts upstream of Zeb2 by genetic epistasis.","method":"Genetic epistasis in conditional KO mice, scRNA-seq, NFIL3 reporter mice, CUT&RUN, ChIP-seq","journal":"Nature immunology","confidence":"High","confidence_rationale":"Tier 2 — genetic epistasis plus CUT&RUN/ChIP-seq identification of direct binding, in vivo validation","pmids":["31406377"],"is_preprint":false},{"year":2022,"finding":"NFIL3 binds to a -165 kb Zeb2 enhancer at sites also bound by C/EBPα and C/EBPβ; NFIL3 represses and C/EBPs activate Zeb2 at these sites. Triple CRISPR mutation of all three NFIL3-C/EBP sites ablates Zeb2 in myeloid but not lymphoid progenitors, causing complete loss of cDC2 specification.","method":"CUT&RUN, ChIP-seq, CRISPR-Cas9 triple-site mutagenesis in vivo, lineage tracing","journal":"Nature","confidence":"High","confidence_rationale":"Tier 1 — direct enhancer binding by CUT&RUN/ChIP-seq combined with in vivo CRISPR mutagenesis","pmids":["35732734"],"is_preprint":false},{"year":2024,"finding":"ZEB2 drives age-associated B cell (ABC) differentiation by binding to the +20 kb MEF2B intronic enhancer, repressing MEF2B-mediated germinal center B cell differentiation. ZEB2-driven ABC differentiation requires JAK-STAT signaling.","method":"ZEB2 haploinsufficient human subjects, B cell-specific Zeb2 KO mice, ChIP/binding assays, JAK inhibitor treatment, TLR7-driven lupus model","journal":"Science","confidence":"High","confidence_rationale":"Tier 1-2 — human genetics, mouse KO, direct enhancer binding, pathway inhibition, multiple orthogonal methods","pmids":["38271512"],"is_preprint":false},{"year":2014,"finding":"FoxQ1 transactivates ZEB2 expression by directly binding to the ZEB2 promoter, driving EMT and HCC metastasis; ZEB2 knockdown suppresses FoxQ1-enhanced metastasis and its re-expression rescues it.","method":"Serial promoter deletion, site-directed mutagenesis, ChIP, ZEB2 knockdown and rescue in HCC cells, in vivo metastasis model","journal":"Hepatology","confidence":"Medium","confidence_rationale":"Tier 2 — direct promoter binding by ChIP with mutagenesis, functional rescue experiment, single lab","pmids":["24005989"],"is_preprint":false},{"year":2021,"finding":"ZEB2 regulates astrogliosis after CNS injury through an EMT-like mechanism; Zeb2os (a long non-coding RNA antisense to Zeb2) facilitates ZEB2 protein translation. Conditional Zeb2 KO in astrocytes attenuates astrogliosis, generates larger lesions, and delays motor function recovery.","method":"Conditional astrocyte-specific Zeb2 KO in spinal cord injury and stroke mouse models, Zeb2os knockdown, behavioral and histological analysis","journal":"Cell reports","confidence":"Medium","confidence_rationale":"Tier 2 — cell-type-specific KO with defined functional phenotype, lncRNA mechanism identified, single lab","pmids":["32610135"],"is_preprint":false},{"year":2018,"finding":"ZEB2 is highly expressed in Bergmann glia and is required for Bergmann glia specification from cerebellar radial glia; Zeb2 deletion disrupts FGF, NOTCH, and TGF-β/BMP signaling pathway components as identified by transcriptome profiling.","method":"Cerebellar radial glia-specific conditional Zeb2 KO, transcriptome profiling, immunohistochemistry, behavioral testing","journal":"The Journal of neuroscience","confidence":"Medium","confidence_rationale":"Tier 2 — cell-type-specific KO with defined phenotype and pathway identification, single lab","pmids":["29326173"],"is_preprint":false},{"year":2006,"finding":"VHL restoration in clear cell renal cell carcinoma cells reduces SIP1/ZEB2 and Snail expression in a HIF-dependent manner, restoring E-cadherin expression; HIF-alpha knockdown likewise increases E-cadherin, placing ZEB2 downstream of the VHL-HIF axis.","method":"VHL re-expression, HIF-alpha RNAi, hypoxia treatment, ChIP (RNA Pol II on E-cadherin promoter), VHL mutant expression","journal":"Molecular and cellular biology","confidence":"Medium","confidence_rationale":"Tier 2 — epistasis with VHL-HIF pathway using multiple molecular approaches, single lab","pmids":["17060462"],"is_preprint":false},{"year":2023,"finding":"ZEB2 directly binds the ACSL4 promoter to activate ACSL4 transcription; ACSL4 protein in turn binds ZEB2 and reduces its ubiquitination to stabilize ZEB2, forming a positive feedback loop that promotes lipid storage and breast cancer metastasis.","method":"ChIP, promoter reporter assays, Co-IP, ubiquitination assays, lipid droplet quantification, in vivo metastasis model","journal":"eLife","confidence":"Medium","confidence_rationale":"Tier 2 — direct promoter binding by ChIP, co-IP for protein interaction, ubiquitination assay, in vivo validation, single lab","pmids":["38078907"],"is_preprint":false},{"year":2025,"finding":"ZEB2 is the master transcriptional regulator of tumor-associated macrophage (TAM) programs; ZEB2 genetic ablation reprograms TAM chromatin, RNA, and protein profiles, suppresses type-I interferon response and antigen presentation, and activates immune suppression. In vivo ZEB2 targeting reprograms TAMs and mobilizes T cell anti-tumor responses.","method":"Integrative scRNA-seq with CRISPR screen, gene perturbation network, conditional Zeb2 KO in TAMs, in vivo tumor models","journal":"Cancer cell","confidence":"Medium","confidence_rationale":"Tier 2 — CRISPR screen, in vivo KO with multi-omic phenotyping, single lab but comprehensive","pmids":["40215981"],"is_preprint":false},{"year":2018,"finding":"p53 binds the MIR30A promoter and induces transcription of miR-30a-5p and -3p; both target ZEB2 3'-UTR, placing ZEB2 downstream of p53 via miR-30a, thereby restraining EMT, tumor invasion, and distal metastasis in breast cancer.","method":"ChIP for p53 on MIR30A promoter, 3'UTR reporter assays, invasion assays, in vivo zebrafish/mouse metastasis models","journal":"Cell death and differentiation","confidence":"Medium","confidence_rationale":"Tier 2 — ChIP and reporter assays, in vivo validation, single lab","pmids":["29666469"],"is_preprint":false},{"year":2018,"finding":"Silencing of the Zeb2-NAT (natural antisense transcript overlapping the Zeb2 locus) reduces Zeb2 protein levels and enhances somatic cell reprogramming; Zeb2-NAT knockdown in ES cells maintains pluripotency upon differentiation stimuli, identifying Zeb2-NAT as a translational regulator of Zeb2 protein.","method":"LNA GapmeR knockdown of Zeb2-NAT, Western blot, reprogramming efficiency assays, ES cell pluripotency assays","journal":"Nature communications","confidence":"Medium","confidence_rationale":"Tier 2 — direct demonstration that lncRNA controls ZEB2 translation, functional consequences in two cell systems, single lab","pmids":["29311544"],"is_preprint":false},{"year":2021,"finding":"MEF2A directly binds the ZEB2 and CTNNB1 (β-catenin) promoters to transactivate their expression in colorectal cancer, simultaneously inducing EMT and activating Wnt/β-catenin signaling.","method":"ChIP, promoter reporter assays, MEF2A overexpression and knockdown, invasion and proliferation assays","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2 — ChIP and reporter assays for direct binding, single lab","pmids":["33863999"],"is_preprint":false},{"year":2022,"finding":"Endothelial Zeb2 maintains liver sinusoidal endothelial cell identity and regulates LSEC-hepatic stellate cell communication; EC-specific Zeb2 KO increases capillarization and HSC activation, while EC-specific Zeb2 overexpression attenuates CCl4-induced liver fibrosis.","method":"EC-specific conditional KO and overexpression in mice, RNA-seq of liver EC, CCl4 fibrosis model, HSC activation markers","journal":"Cardiovascular research","confidence":"Medium","confidence_rationale":"Tier 2 — cell-type-specific KO and OE with defined phenotype and transcriptomic mechanism, single lab","pmids":["33909875"],"is_preprint":false}],"current_model":"ZEB2 is a multi-zinc finger transcription factor that primarily acts as a transcriptional repressor (and occasionally activator) by binding E-box sequences in target gene promoters—most notably repressing E-cadherin to drive EMT—while also recruiting the NuRD corepressor complex; it is post-translationally regulated by ubiquitin-mediated degradation (via Ppa/FBXL11) and by the lncRNA Zeb2-NAT that controls its translation, and it operates within a double-negative feedback loop with the miR-200 family to control epithelial versus mesenchymal cell states across diverse biological contexts including neural development, hematopoiesis, immune cell differentiation, and tissue repair."},"narrative":{"teleology":[{"year":2001,"claim":"The central question of how ZEB2 drives epithelial-to-mesenchymal transition was answered by demonstrating that ZEB2 directly represses E-cadherin through binding to conserved E2-boxes in its promoter, establishing ZEB2 as a direct transcriptional repressor of cell adhesion.","evidence":"Promoter binding assays with E-box mutagenesis and conditional expression in MDCK cells","pmids":["11430829"],"confidence":"High","gaps":["Whether ZEB2 requires cofactors for E-cadherin repression was not addressed","Genome-wide binding profile not yet determined","Post-translational regulation of ZEB2 unknown"]},{"year":2006,"claim":"ZEB2's transcriptional program was extended beyond E-cadherin repression to include activation of mesenchymal genes (vimentin) and matrix metalloproteinases, and its regulation was linked to the HIF-VHL oxygen-sensing axis, connecting ZEB2 to tumor hypoxia responses.","evidence":"RNAi and overexpression in breast cancer and renal carcinoma cells; VHL re-expression and HIF knockdown epistasis","pmids":["16568083","17060462","15026811"],"confidence":"Medium","gaps":["Whether HIF directly binds the ZEB2 promoter was not resolved","Mechanism of vimentin activation (direct vs. indirect) undetermined"]},{"year":2008,"claim":"Three breakthroughs established ZEB2's regulatory architecture: (1) a double-negative feedback loop with miR-200 family was identified, creating a bistable EMT switch; (2) ZEB2 was shown to repress cyclin D1, coupling EMT to cell cycle arrest; and (3) ZEB2 was found to recruit the NuRD corepressor complex, with a Mowat-Wilson syndrome patient mutation disrupting this interaction.","evidence":"ChIP, promoter reporters, miRNA overexpression/inhibition; mass spectrometry of affinity-purified complexes; Xenopus neural induction assays with domain mutants","pmids":["18829540","18376396","17855508","18182442"],"confidence":"High","gaps":["Structural basis of NuRD-ZEB2 interaction unresolved","Whether ZEB2 and ZEB1 have redundant roles in the miR-200 loop not fully dissected","Whether NuRD mediates all or only some ZEB2 repressive activities unknown"]},{"year":2010,"claim":"ZEB2's role was expanded beyond cancer EMT to pluripotency decisions: in human ESCs, ZEB2 limits Activin-Nodal/SMAD signaling to direct neuroectodermal versus mesendodermal specification.","evidence":"Loss- and gain-of-function in hESCs with epistasis to Activin-Nodal pathway components","pmids":["20074535"],"confidence":"Medium","gaps":["Direct transcriptional targets in hESC context not identified by ChIP","Whether ZEB2 engages NuRD in this context untested"]},{"year":2011,"claim":"Post-translational control of ZEB2 protein stability was established: the F-box protein Ppa targets ZEB2 for ubiquitin-proteasome degradation, providing a mechanism for rapid EMT factor turnover.","evidence":"Protein stability assays, proteasome inhibitor treatment, domain mapping, Xenopus epistasis","pmids":["21727196"],"confidence":"Medium","gaps":["Specific ubiquitin chain type and lysine residues not mapped","Whether Ppa is the sole E3 ligase for ZEB2 unknown","Regulation of Ppa itself not addressed"]},{"year":2013,"claim":"ZEB2 was shown to function as a transcriptional activator—not only a repressor—by cooperating with Sp1 to transactivate cadherin-11 and integrin α5, and by directly activating ETS1, revealing a dual-mode transcription factor.","evidence":"ChIP and promoter reporters for Sp1-dependent activation; ChIP on ETS1 promoter with inducible ZEB2 expression","pmids":["24130169","30790340"],"confidence":"Medium","gaps":["Structural basis for context-dependent switching between repression and activation unknown","Whether Sp1 cooperation is genome-wide or restricted to specific loci untested"]},{"year":2013,"claim":"ZEB2's essential role in cortical interneuron migration was mechanistically resolved: Zeb2 represses the guidance receptor Unc5b, and genetic reduction of Unc5b rescues migration in Zeb2-null interneurons, establishing a repressor-of-repulsion mechanism.","evidence":"Conditional Zeb2 KO in interneurons, RNA-seq, focal Unc5b electroporation rescue","pmids":["23312517"],"confidence":"High","gaps":["Whether additional guidance receptors are ZEB2 targets not fully explored","Mechanism of ZEB2 binding at Unc5b locus not shown by ChIP"]},{"year":2015,"claim":"ZEB2's control of axonal morphogenesis was traced to a specific effector: ninein, a microtubule-binding protein directly activated by ZEB2, mediates axonal growth and cortical branching.","evidence":"Conditional Zeb2 KO in postmitotic neurons, ChIP confirming ninein as direct target, ninein rescue experiments","pmids":["25741725"],"confidence":"High","gaps":["Whether ninein is the sole mediator of ZEB2-dependent axonal phenotypes unknown","How ZEB2 activates rather than represses ninein transcription mechanistically unclear"]},{"year":2016,"claim":"ZEB2 was established as essential for multiple neural and hematopoietic lineages: Schwann cell myelination (repressing Sox2/Ednrb as an 'inhibitor of inhibitors'), broad hematopoietic differentiation (regulating JAK-STAT and ERK signaling, M-CSF receptor expression, and pDC development), and myeloid differentiation in AML (controlled by miR-200 methylation).","evidence":"Schwann cell-specific and bone marrow-inducible Zeb2 KO in mice; RNA-seq; genome-scale shRNA screens in AML","pmids":["27294512","27683414","27930303","27756750"],"confidence":"High","gaps":["Direct ChIP targets in hematopoietic cells not systematically mapped","Whether ZEB2 roles in pDC and monocyte development share common target genes unknown"]},{"year":2018,"claim":"ZEB2's immune functions were extended to adaptive immunity and its translational regulation clarified: ZEB2 promotes terminal effector CD8+ T cell fate (opposing ZEB1-driven memory), interacts with the demethylase KDM1A/LSD1 in T-ALL, and the Zeb2-NAT antisense lncRNA controls ZEB2 protein translation, influencing somatic cell reprogramming.","evidence":"Conditional KO of Zeb1/Zeb2 in CD8+ T cells; co-IP of ZEB2-KDM1A; LNA knockdown of Zeb2-NAT with reprogramming and pluripotency assays","pmids":["29449309","28069602","29311544","29326173"],"confidence":"Medium","gaps":["Whether KDM1A interaction is direct or bridged by NuRD not resolved","p53-miR-30a-ZEB2 axis identified concurrently but integration with miR-200 loop unclear","Zeb2-NAT mechanism of translational control (IRES retention vs. other) not fully dissected"]},{"year":2019,"claim":"A complete genetic circuit governing dendritic cell specification was delineated: NFIL3 represses Zeb2, and low Zeb2 permits Id2 upregulation to commit progenitors to the cDC1 lineage, positioning Zeb2 as the central node in DC fate decisions.","evidence":"Genetic epistasis in conditional KO mice, CUT&RUN and ChIP-seq for direct NFIL3 binding at Zeb2","pmids":["31406377"],"confidence":"High","gaps":["How Zeb2 represses Id2 (direct binding vs. intermediate) not shown","Whether this circuit operates identically in human DC development untested"]},{"year":2022,"claim":"Enhancer-level regulatory logic of Zeb2 was resolved: NFIL3 and C/EBP factors bind a −165 kb Zeb2 enhancer with opposing effects, and triple CRISPR mutation of these sites ablates Zeb2 selectively in myeloid progenitors, causing complete loss of cDC2 specification; simultaneously, ZEB2 was shown to control smooth muscle cell phenotypic transitions during atherosclerosis through chromatin remodeling.","evidence":"CUT&RUN/ChIP-seq with in vivo CRISPR triple-site mutagenesis; scATAC-seq and scRNA-seq in SMC-specific Zeb2 KO atherosclerosis model","pmids":["35732734","34990206"],"confidence":"High","gaps":["Whether additional distal enhancers regulate Zeb2 in other lineages unknown","How ZEB2 remodels chromatin at SMC loci—direct NuRD recruitment vs. other mechanisms—not resolved"]},{"year":2023,"claim":"ZEB2's effector mechanism was further specified in endothelial pathology: ZEB2 recruits the HDAC1-NuRD complex to repress CTH/CSE, reducing H2S and PDI S-sulfhydration to drive aortic aneurysm; separately, a ZEB2-ACSL4 positive feedback loop linking transcriptional activation to protein stabilization was identified in breast cancer metastasis.","evidence":"Co-IP/MS, ChIP at CTH promoter, endothelial HDAC1 KO mice; ChIP at ACSL4 promoter with ubiquitination assays and in vivo metastasis models","pmids":["36951067","38078907"],"confidence":"High","gaps":["Whether ACSL4-mediated ZEB2 stabilization occurs in non-cancer contexts unknown","Specific HDAC1 deacetylation targets at the CTH locus not identified"]},{"year":2024,"claim":"ZEB2 was identified as a driver of age-associated B cell differentiation by directly repressing the MEF2B intronic enhancer, thereby blocking germinal center fate; ZEB2 haploinsufficiency in humans reduces ABC formation, and JAK-STAT signaling is required for ZEB2-driven ABC differentiation, linking ZEB2 to autoimmunity.","evidence":"ZEB2 haploinsufficient human subjects, B cell-specific Zeb2 KO mice, ChIP/binding at MEF2B enhancer, JAK inhibitor treatment in TLR7-driven lupus model","pmids":["38271512"],"confidence":"High","gaps":["Full ZEB2 cistrome in B cells not yet mapped","Whether ZEB2-driven ABC program is identical across autoimmune diseases unknown"]},{"year":2025,"claim":"ZEB2 was established as the master transcription factor of tumor-associated macrophage identity, controlling chromatin accessibility, interferon response suppression, and immune evasion programs; genetic ablation of Zeb2 in TAMs reprograms them and mobilizes anti-tumor T cell responses.","evidence":"Integrative scRNA-seq with CRISPR screen, gene perturbation network analysis, conditional Zeb2 KO in TAMs with in vivo tumor models","pmids":["40215981"],"confidence":"Medium","gaps":["Direct ZEB2 target genes in TAMs not validated by ChIP","Whether TAM reprogramming by ZEB2 deletion synergizes with checkpoint immunotherapy not tested","Single lab finding awaiting independent replication"]},{"year":null,"claim":"A genome-wide, cell-type-resolved map of ZEB2 binding sites across its diverse lineage contexts is lacking, and the structural basis for ZEB2's context-dependent switching between transcriptional repression (NuRD/HDAC recruitment) and activation (Sp1 cooperation) remains unresolved.","evidence":"","pmids":[],"confidence":"Low","gaps":["No crystal or cryo-EM structure of ZEB2 or ZEB2-NuRD complex","Systematic CUT&RUN/ChIP-seq across immune, neural, and epithelial contexts not performed","How ZEB2 versus ZEB1 target specificity is achieved at the DNA-binding level is unknown"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[0,1,2,4,7,8,14,15,16,20,25,30]},{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[0,1,2,4,7,8,12,13,14,15,16,20,25,30,31]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[0,1,2,4,7,8,14,16,20,25]}],"pathway":[{"term_id":"R-HSA-162582","term_label":"Signal Transduction","supporting_discovery_ids":[9,19,22,25]},{"term_id":"R-HSA-168256","term_label":"Immune System","supporting_discovery_ids":[21,22,23,24,25,31]},{"term_id":"R-HSA-1266738","term_label":"Developmental Biology","supporting_discovery_ids":[9,12,13,14,28]},{"term_id":"R-HSA-4839726","term_label":"Chromatin organization","supporting_discovery_ids":[19,20,24]}],"complexes":["NuRD"],"partners":["CHD3","HDAC1","KDM1A","SP1","ACSL4","NFIL3"],"other_free_text":[]},"mechanistic_narrative":"ZEB2 is a multi-zinc finger transcription factor that functions as a master regulator of cell identity transitions across epithelial, neural, hematopoietic, immune, and vascular lineages, primarily by repressing lineage-inappropriate gene programs. ZEB2 represses E-cadherin, cyclin D1, ephrinB2, and other target genes by binding E-box and related promoter elements, recruiting the NuRD/HDAC1 corepressor complex to mediate transcriptional silencing, while also acting as a transcriptional activator of select targets (e.g., cadherin-11, ACSL4, ETS1) through cooperation with Sp1 or direct E-box engagement [PMID:11430829, PMID:17855508, PMID:18182442, PMID:36951067, PMID:24130169]. ZEB2 operates within a double-negative feedback loop with the miR-200 family—each repressing the other's expression—and its protein levels are further controlled by the Zeb2-NAT antisense transcript that promotes its translation, by ubiquitin-proteasome-mediated degradation, and by upstream transcription factors including HIF-1α, NFIL3, C/EBPs, FoxQ1, and MEF2A [PMID:18829540, PMID:17585049, PMID:29311544, PMID:21727196, PMID:35732734]. In the immune system, ZEB2 drives age-associated B cell and terminal effector CD8+ T cell differentiation, specifies cDC2 fate through an Nfil3-Zeb2-Id2 circuit, programs tumor-associated macrophage identity, and is required broadly for hematopoietic lineage output; in the nervous system it controls cortical interneuron migration (via Unc5b repression), axonal growth (via ninein), Schwann cell myelination, Bergmann glia specification, and astrogliosis [PMID:38271512, PMID:29449309, PMID:31406377, PMID:40215981, PMID:23312517, PMID:25741725, PMID:27294512, PMID:32610135]."},"prefetch_data":{"uniprot":{"accession":"O60315","full_name":"Zinc finger E-box-binding homeobox 2","aliases":["Smad-interacting protein 1","SMADIP1","Zinc finger homeobox protein 1b"],"length_aa":1214,"mass_kda":136.4,"function":"Transcriptional inhibitor that binds to DNA sequence 5'-CACCT-3' in different promoters (PubMed:16061479, PubMed:20516212). Represses transcription of E-cadherin (PubMed:16061479). Represses expression of MEOX2 (PubMed:20516212)","subcellular_location":"Nucleus; Chromosome","url":"https://www.uniprot.org/uniprotkb/O60315/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/ZEB2","classification":"Not Classified","n_dependent_lines":260,"n_total_lines":1208,"dependency_fraction":0.2152317880794702},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[{"gene":"CSNK2B","stoichiometry":0.2},{"gene":"CTBP1","stoichiometry":0.2},{"gene":"CTBP2","stoichiometry":0.2},{"gene":"HDAC1","stoichiometry":0.2},{"gene":"HDAC2","stoichiometry":0.2},{"gene":"RBBP4","stoichiometry":0.2}],"url":"https://opencell.sf.czbiohub.org/search/ZEB2","total_profiled":1310},"omim":[{"mim_id":"613147","title":"MICRO RNA 205; MIR205","url":"https://www.omim.org/entry/613147"},{"mim_id":"612094","title":"MICRO RNA 429; MIRN429","url":"https://www.omim.org/entry/612094"},{"mim_id":"612093","title":"MICRO RNA 141; MIR141","url":"https://www.omim.org/entry/612093"},{"mim_id":"612092","title":"MICRO RNA 200C; MIR200C","url":"https://www.omim.org/entry/612092"},{"mim_id":"612091","title":"MICRO RNA 200B; MIRN200B","url":"https://www.omim.org/entry/612091"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Supported","locations":[{"location":"Nucleoplasm","reliability":"Supported"},{"location":"Nucleoli","reliability":"Supported"},{"location":"Plasma membrane","reliability":"Additional"}],"tissue_specificity":"Tissue enhanced","tissue_distribution":"Detected in all","driving_tissues":[{"tissue":"brain","ntpm":176.9}],"url":"https://www.proteinatlas.org/search/ZEB2"},"hgnc":{"alias_symbol":["KIAA0569","SIP-1","SIP1"],"prev_symbol":["ZFHX1B"]},"alphafold":{"accession":"O60315","domains":[{"cath_id":"3.30.160","chopping":"210-263","consensus_level":"medium","plddt":78.0006,"start":210,"end":263},{"cath_id":"3.30.160.60","chopping":"281-338","consensus_level":"medium","plddt":82.561,"start":281,"end":338},{"cath_id":"1.10.10.60","chopping":"654-700","consensus_level":"medium","plddt":85.5262,"start":654,"end":700}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/O60315","model_url":"https://alphafold.ebi.ac.uk/files/AF-O60315-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-O60315-F1-predicted_aligned_error_v6.png","plddt_mean":48.16},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=ZEB2","jax_strain_url":"https://www.jax.org/strain/search?query=ZEB2"},"sequence":{"accession":"O60315","fasta_url":"https://rest.uniprot.org/uniprotkb/O60315.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/O60315/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/O60315"}},"corpus_meta":[{"pmid":"18376396","id":"PMC_18376396","title":"The 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     \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — direct promoter binding with mutagenesis, functional rescue/loss-of-function, replicated across multiple labs\",\n      \"pmids\": [\"11430829\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"ZEB2/SIP1 (together with ZEB1) represses the miR-200 family promoter by binding to conserved ZEB-type E-box elements, establishing a double-negative feedback loop: miR-200 family suppresses ZEB1/ZEB2, and ZEB1/ZEB2 suppress miR-200 family expression.\",\n      \"method\": \"Promoter deletion analysis, ChIP, reporter assays, enforced expression/inhibition of miRNAs\",\n      \"journal\": \"Cancer research\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — multiple orthogonal methods (ChIP, reporter, promoter deletion), independently replicated\",\n      \"pmids\": [\"18829540\", \"18376396\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"ZEB2/SIP1 directly represses cyclin D1 by binding to three sequence elements in the cyclin D1 gene promoter, resulting in Rb hypophosphorylation and G1 accumulation in cells undergoing EMT.\",\n      \"method\": \"ChIP, promoter binding, exogenous cyclin D1 rescue, RNAi, cell cycle analysis\",\n      \"journal\": \"Molecular biology of the cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — direct promoter binding, mutagenesis-like rescue, multiple orthogonal methods in single study\",\n      \"pmids\": [\"17855508\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"miR-200b post-transcriptionally represses ZFHX1B/ZEB2 via multiple sequence elements in the 3'-UTR; overexpression of miR-200b reduces endogenous ZEB2 and activates the E-cadherin promoter.\",\n      \"method\": \"3'-UTR reporter assays, overexpression/inhibition of miR-200b, E-cadherin promoter activity assays\",\n      \"journal\": \"RNA\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — direct 3'UTR binding demonstrated by reporter assay, endogenous protein knockdown shown, replicated by multiple labs\",\n      \"pmids\": [\"17585049\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"ZEB2/SIP1 associates with the NuRD corepressor complex through its N-terminal domain; an MWS patient mutation in this domain abolishes NuRD recruitment and reduces transcriptional repression of the XBMP4 promoter and E-cadherin, and impairs neural induction in Xenopus.\",\n      \"method\": \"Mass spectrometry of affinity-purified complexes, Co-IP, transcriptional reporter assays, Xenopus animal cap assays\",\n      \"journal\": \"Human molecular genetics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — MS-based interactome, functional domain mutagenesis (patient mutation), and multiple orthogonal assays\",\n      \"pmids\": [\"18182442\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"ZEB2/SIP1 induces vimentin expression in breast tumor cells and promotes cell migration; RNAi-mediated SIP1 knockdown decreases vimentin mRNA and protein, and SIP1-induced migration does not involve the β-catenin/TCF pathway.\",\n      \"method\": \"cDNA transfection, RNAi, Boyden chamber migration assay, RT-PCR, Western blot, TOP-FLASH reporter assay\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — clean KD/OE with defined phenotype and pathway exclusion, single lab\",\n      \"pmids\": [\"16568083\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"ZEB2/SIP1 protein stability is regulated by the F-box ubiquitin ligase Ppa (Partner of paired) through the ubiquitin-proteasome system, which also targets Twist and Snail family EMT factors.\",\n      \"method\": \"Protein stability assays, proteasome inhibitor treatment, epistasis in Xenopus, domain mapping\",\n      \"journal\": \"The Journal of cell biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — direct functional epistasis and domain-level analysis, single lab\",\n      \"pmids\": [\"21727196\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"ZEB2 cooperates with Sp1 to directly transactivate cadherin-11 and integrin α5 promoters in an Sp1-dependent but Smad- and E-box-independent manner, and ZEB2 enhances Sp1 protein stability; this ZEB2-Sp1 axis drives cancer cell invasion.\",\n      \"method\": \"ChIP, promoter reporter assays, co-immunoprecipitation, protein stability assays, invasion assays, immunofluorescence on human tumor samples\",\n      \"journal\": \"Carcinogenesis\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — ChIP and reporter assays demonstrate direct binding, protein stability shown biochemically, single lab\",\n      \"pmids\": [\"24130169\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"ZEB2/SIP1 directly activates ETS1 transcription by binding E-box sequences on the ETS1 promoter; ETS1 in turn maintains ZEB2-induced EMT and upregulates TWIST and MMP9.\",\n      \"method\": \"ChIP, luciferase reporter assays, ZEB2 knockdown/inducible expression, migration and invasion assays\",\n      \"journal\": \"Molecular carcinogenesis\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — direct promoter binding by ChIP, inducible system, single lab\",\n      \"pmids\": [\"30790340\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"ZEB2/SIP1 limits mesendoderm-inducing effects of Activin-Nodal/SMAD2/3 signaling in human embryonic stem cells, directing cells toward neuroectoderm; Activin-Nodal signaling in turn cooperates with NANOG, OCT4, and SOX2 to control SIP1 expression.\",\n      \"method\": \"Loss-of-function and gain-of-function in hESCs, epistasis with Activin-Nodal signaling components, differentiation assays\",\n      \"journal\": \"Cell stem cell\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — genetic epistasis with signaling pathway, multiple pluripotency factors tested, single lab\",\n      \"pmids\": [\"20074535\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2004,\n      \"finding\": \"ZEB2/SIP1 overexpression in hepatocellular carcinoma cells suppresses E-cadherin and upregulates MMP-1, MMP-2, and MT1-MMP, thereby enhancing cancer cell invasion.\",\n      \"method\": \"Stable transfection, RT-PCR for MMPs, invasion assays, morphology assessment\",\n      \"journal\": \"British journal of cancer\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — stable gain-of-function with defined MMP transcriptional targets, single lab\",\n      \"pmids\": [\"15026811\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"ZEB2 transcriptionally represses genes regulating myeloid differentiation and its depletion causes aberrant differentiation of AML cells; epigenetic silencing of the miR-200 family by DNA methylation controls ZEB2 expression in AML.\",\n      \"method\": \"Genome-scale shRNA screens in 17 AML cell lines and murine AML model, gene expression profiling, miR-200 methylation analysis\",\n      \"journal\": \"Blood\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — genome-scale screen validated in orthogonal mouse model, expression profiling, but direct target promoter binding not shown\",\n      \"pmids\": [\"27756750\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Zeb2 is essential for Schwann cell differentiation and myelination; Schwann cells lacking Zeb2 fail to repress Sox2 and Ednrb (identified as Zeb2 target genes) and cannot progress through lineage differentiation. Zeb2 acts as an 'inhibitor of inhibitors' of myelination.\",\n      \"method\": \"Conditional Schwann cell-specific Zeb2 knockout in mice, peripheral nerve phenotyping, RNA-seq, target gene identification\",\n      \"journal\": \"Nature neuroscience\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — cell-type-specific KO with severe myelination phenotype, transcriptome-based target identification, replicated in adult deletion model\",\n      \"pmids\": [\"27294512\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Sip1 (Zeb2) is required cell-autonomously for cortical interneuron migration; Sip1 knockout interneurons fail to migrate to the neocortex due to elevated expression of the repulsive receptor Unc5b. Reducing Unc5b in Sip1 knockout tissue rescues the migration defect.\",\n      \"method\": \"Conditional Sip1 knockout, RNA sequencing, focal electroporation of Unc5b, genetic rescue by Unc5b knockdown\",\n      \"journal\": \"Neuron\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic epistasis (Unc5b rescue), RNA-seq, in vivo conditional KO, replicated by electroporation\",\n      \"pmids\": [\"23312517\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"Sip1 (Zeb2) mediates axonal growth and ipsilateral cortical branching through its direct downstream effector ninein, a microtubule-binding protein that affects microtubule stability and dynamics.\",\n      \"method\": \"Conditional Sip1 knockout in postmitotic neurons, mosaic deletion, axonal tracing, ChIP to confirm ninein as direct target, ninein rescue experiments\",\n      \"journal\": \"Neuron\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — direct target gene identification by ChIP, genetic rescue with effector gene, in vivo phenotype\",\n      \"pmids\": [\"25741725\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"In hypoxia, HIF-1α induces ZEB2, which directly binds the ephrinB2 promoter to repress ephrinB2 expression, thereby promoting glioma cell invasiveness; this mechanism is activated after anti-angiogenic treatment.\",\n      \"method\": \"Promoter binding assays, hypoxia treatment, HIF-1α induction, ZEB2 disruption, in vivo glioma invasion model\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — direct promoter binding demonstrated, in vivo validation, single lab\",\n      \"pmids\": [\"27470974\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"ZEB2 directly binds to the HBV core promoter and represses HBV transcription and replication; mutation of the ZEB2 binding site in the core promoter abolishes ZEB2-mediated inhibition.\",\n      \"method\": \"ChIP, promoter reporter assays, site-directed mutagenesis, HBV replication intermediates quantification\",\n      \"journal\": \"Oncotarget\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — direct promoter binding with mutagenesis of binding site, functional replication assays\",\n      \"pmids\": [\"26895378\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"ZEB2 interacts with KDM1A (LSD1), a lysine-specific demethylase, and T-ALL cells with elevated ZEB2 are critically dependent on KDM1A activity for survival.\",\n      \"method\": \"Protein interaction studies (co-IP), pharmacological KDM1A inhibition, shRNA knockdown in mouse and human T-ALL\",\n      \"journal\": \"Blood\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 — protein interaction identified, functional dependence shown, single lab\",\n      \"pmids\": [\"28069602\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"Cardiomyocyte-specific ZEB2 induces expression of paracrine factors Thymosin β4 (TMSB4) and Prothymosin α (PTMA), which stimulate endothelial cell migration and angiogenesis after myocardial infarction; cardiomyocyte-specific ZEB2 deletion impairs cardiac function post-MI.\",\n      \"method\": \"Cardiomyocyte-specific conditional KO and overexpression in mice, single-cell sequencing, endothelial migration assays, in vivo therapeutic ZEB2 delivery\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — cell-type-specific KO and OE with defined paracrine effectors, in vivo validation, single lab\",\n      \"pmids\": [\"33398012\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"Zeb2 regulates smooth muscle cell phenotypic transition during atherosclerosis through chromatin remodeling that disrupts Notch and TGF-β signaling; SMC-specific Zeb2 loss prevents contractile-to-fibroblast-like transition and accelerates chondromyocyte formation.\",\n      \"method\": \"CRISPR-Cas9 genome and epigenome editing, single-cell ATAC-seq and RNA-seq, SMC-specific conditional KO in murine atherosclerosis model\",\n      \"journal\": \"Circulation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — CRISPR editing identifies causal enhancers, scATAC-seq mechanistic, single lab\",\n      \"pmids\": [\"34990206\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"ZEB2 recruits the HDAC1-NuRD complex to the CTH gene promoter to repress CSE (cystathionine γ-lyase) transcription in endothelial cells, reducing H2S production and PDI S-sulfhydration, thereby driving aortic aneurysm and dissection.\",\n      \"method\": \"Co-immunoprecipitation with mass spectrometry, ChIP, endothelial-specific HDAC1 KO mice, PDI S-sulfhydration assays, AAD mouse models\",\n      \"journal\": \"Circulation\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — co-IP/MS, ChIP, direct promoter repression, in vivo conditional KO, multiple orthogonal methods\",\n      \"pmids\": [\"36951067\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"ZEB2 promotes terminal effector CD8+ T cell differentiation, while ZEB1 promotes memory formation; TGF-β induces ZEB1 in memory cells and selectively inhibits ZEB2; the miR-200 family inversely regulates ZEB1 and ZEB2 in CD8+ T cells.\",\n      \"method\": \"Conditional KO of Zeb1 and Zeb2 in CD8+ T cells, cytokine treatment, miR-200 family KO, adoptive transfer experiments\",\n      \"journal\": \"The Journal of experimental medicine\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — cell-type-specific KO with functional phenotype, pathway dissection, single lab\",\n      \"pmids\": [\"29449309\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"Zeb2 inactivation in the bone marrow results in differentiation defects across multiple hematopoietic lineages and perturbs JAK-STAT and ERK signaling pathways; Zeb2 is required for M-CSF receptor expression in monocyte development and for plasmacytoid DC development.\",\n      \"method\": \"Inducible Zeb2 gene deletion, flow cytometry, global gene expression profiling, intracellular signaling analysis\",\n      \"journal\": \"Blood; PNAS\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — genetic KO with transcriptomic pathway analysis, replicated independently in two papers\",\n      \"pmids\": [\"27683414\", \"27930303\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"An Nfil3-Zeb2-Id2 genetic circuit controls cDC1 development: NFIL3 represses Zeb2 expression, low Zeb2 allows Id2 to rise, and this progression commits CDPs to the cDC1 lineage; Nfil3 acts upstream of Zeb2 by genetic epistasis.\",\n      \"method\": \"Genetic epistasis in conditional KO mice, scRNA-seq, NFIL3 reporter mice, CUT&RUN, ChIP-seq\",\n      \"journal\": \"Nature immunology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic epistasis plus CUT&RUN/ChIP-seq identification of direct binding, in vivo validation\",\n      \"pmids\": [\"31406377\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"NFIL3 binds to a -165 kb Zeb2 enhancer at sites also bound by C/EBPα and C/EBPβ; NFIL3 represses and C/EBPs activate Zeb2 at these sites. Triple CRISPR mutation of all three NFIL3-C/EBP sites ablates Zeb2 in myeloid but not lymphoid progenitors, causing complete loss of cDC2 specification.\",\n      \"method\": \"CUT&RUN, ChIP-seq, CRISPR-Cas9 triple-site mutagenesis in vivo, lineage tracing\",\n      \"journal\": \"Nature\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — direct enhancer binding by CUT&RUN/ChIP-seq combined with in vivo CRISPR mutagenesis\",\n      \"pmids\": [\"35732734\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"ZEB2 drives age-associated B cell (ABC) differentiation by binding to the +20 kb MEF2B intronic enhancer, repressing MEF2B-mediated germinal center B cell differentiation. ZEB2-driven ABC differentiation requires JAK-STAT signaling.\",\n      \"method\": \"ZEB2 haploinsufficient human subjects, B cell-specific Zeb2 KO mice, ChIP/binding assays, JAK inhibitor treatment, TLR7-driven lupus model\",\n      \"journal\": \"Science\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — human genetics, mouse KO, direct enhancer binding, pathway inhibition, multiple orthogonal methods\",\n      \"pmids\": [\"38271512\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"FoxQ1 transactivates ZEB2 expression by directly binding to the ZEB2 promoter, driving EMT and HCC metastasis; ZEB2 knockdown suppresses FoxQ1-enhanced metastasis and its re-expression rescues it.\",\n      \"method\": \"Serial promoter deletion, site-directed mutagenesis, ChIP, ZEB2 knockdown and rescue in HCC cells, in vivo metastasis model\",\n      \"journal\": \"Hepatology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — direct promoter binding by ChIP with mutagenesis, functional rescue experiment, single lab\",\n      \"pmids\": [\"24005989\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"ZEB2 regulates astrogliosis after CNS injury through an EMT-like mechanism; Zeb2os (a long non-coding RNA antisense to Zeb2) facilitates ZEB2 protein translation. Conditional Zeb2 KO in astrocytes attenuates astrogliosis, generates larger lesions, and delays motor function recovery.\",\n      \"method\": \"Conditional astrocyte-specific Zeb2 KO in spinal cord injury and stroke mouse models, Zeb2os knockdown, behavioral and histological analysis\",\n      \"journal\": \"Cell reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — cell-type-specific KO with defined functional phenotype, lncRNA mechanism identified, single lab\",\n      \"pmids\": [\"32610135\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"ZEB2 is highly expressed in Bergmann glia and is required for Bergmann glia specification from cerebellar radial glia; Zeb2 deletion disrupts FGF, NOTCH, and TGF-β/BMP signaling pathway components as identified by transcriptome profiling.\",\n      \"method\": \"Cerebellar radial glia-specific conditional Zeb2 KO, transcriptome profiling, immunohistochemistry, behavioral testing\",\n      \"journal\": \"The Journal of neuroscience\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — cell-type-specific KO with defined phenotype and pathway identification, single lab\",\n      \"pmids\": [\"29326173\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"VHL restoration in clear cell renal cell carcinoma cells reduces SIP1/ZEB2 and Snail expression in a HIF-dependent manner, restoring E-cadherin expression; HIF-alpha knockdown likewise increases E-cadherin, placing ZEB2 downstream of the VHL-HIF axis.\",\n      \"method\": \"VHL re-expression, HIF-alpha RNAi, hypoxia treatment, ChIP (RNA Pol II on E-cadherin promoter), VHL mutant expression\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — epistasis with VHL-HIF pathway using multiple molecular approaches, single lab\",\n      \"pmids\": [\"17060462\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"ZEB2 directly binds the ACSL4 promoter to activate ACSL4 transcription; ACSL4 protein in turn binds ZEB2 and reduces its ubiquitination to stabilize ZEB2, forming a positive feedback loop that promotes lipid storage and breast cancer metastasis.\",\n      \"method\": \"ChIP, promoter reporter assays, Co-IP, ubiquitination assays, lipid droplet quantification, in vivo metastasis model\",\n      \"journal\": \"eLife\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — direct promoter binding by ChIP, co-IP for protein interaction, ubiquitination assay, in vivo validation, single lab\",\n      \"pmids\": [\"38078907\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"ZEB2 is the master transcriptional regulator of tumor-associated macrophage (TAM) programs; ZEB2 genetic ablation reprograms TAM chromatin, RNA, and protein profiles, suppresses type-I interferon response and antigen presentation, and activates immune suppression. In vivo ZEB2 targeting reprograms TAMs and mobilizes T cell anti-tumor responses.\",\n      \"method\": \"Integrative scRNA-seq with CRISPR screen, gene perturbation network, conditional Zeb2 KO in TAMs, in vivo tumor models\",\n      \"journal\": \"Cancer cell\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — CRISPR screen, in vivo KO with multi-omic phenotyping, single lab but comprehensive\",\n      \"pmids\": [\"40215981\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"p53 binds the MIR30A promoter and induces transcription of miR-30a-5p and -3p; both target ZEB2 3'-UTR, placing ZEB2 downstream of p53 via miR-30a, thereby restraining EMT, tumor invasion, and distal metastasis in breast cancer.\",\n      \"method\": \"ChIP for p53 on MIR30A promoter, 3'UTR reporter assays, invasion assays, in vivo zebrafish/mouse metastasis models\",\n      \"journal\": \"Cell death and differentiation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — ChIP and reporter assays, in vivo validation, single lab\",\n      \"pmids\": [\"29666469\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"Silencing of the Zeb2-NAT (natural antisense transcript overlapping the Zeb2 locus) reduces Zeb2 protein levels and enhances somatic cell reprogramming; Zeb2-NAT knockdown in ES cells maintains pluripotency upon differentiation stimuli, identifying Zeb2-NAT as a translational regulator of Zeb2 protein.\",\n      \"method\": \"LNA GapmeR knockdown of Zeb2-NAT, Western blot, reprogramming efficiency assays, ES cell pluripotency assays\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — direct demonstration that lncRNA controls ZEB2 translation, functional consequences in two cell systems, single lab\",\n      \"pmids\": [\"29311544\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"MEF2A directly binds the ZEB2 and CTNNB1 (β-catenin) promoters to transactivate their expression in colorectal cancer, simultaneously inducing EMT and activating Wnt/β-catenin signaling.\",\n      \"method\": \"ChIP, promoter reporter assays, MEF2A overexpression and knockdown, invasion and proliferation assays\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — ChIP and reporter assays for direct binding, single lab\",\n      \"pmids\": [\"33863999\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"Endothelial Zeb2 maintains liver sinusoidal endothelial cell identity and regulates LSEC-hepatic stellate cell communication; EC-specific Zeb2 KO increases capillarization and HSC activation, while EC-specific Zeb2 overexpression attenuates CCl4-induced liver fibrosis.\",\n      \"method\": \"EC-specific conditional KO and overexpression in mice, RNA-seq of liver EC, CCl4 fibrosis model, HSC activation markers\",\n      \"journal\": \"Cardiovascular research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — cell-type-specific KO and OE with defined phenotype and transcriptomic mechanism, single lab\",\n      \"pmids\": [\"33909875\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"ZEB2 is a multi-zinc finger transcription factor that primarily acts as a transcriptional repressor (and occasionally activator) by binding E-box sequences in target gene promoters—most notably repressing E-cadherin to drive EMT—while also recruiting the NuRD corepressor complex; it is post-translationally regulated by ubiquitin-mediated degradation (via Ppa/FBXL11) and by the lncRNA Zeb2-NAT that controls its translation, and it operates within a double-negative feedback loop with the miR-200 family to control epithelial versus mesenchymal cell states across diverse biological contexts including neural development, hematopoiesis, immune cell differentiation, and tissue repair.\"\n}\n```","stage2_raw":"```json\n{\n  \"mechanistic_narrative\": \"ZEB2 is a multi-zinc finger transcription factor that functions as a master regulator of cell identity transitions across epithelial, neural, hematopoietic, immune, and vascular lineages, primarily by repressing lineage-inappropriate gene programs. ZEB2 represses E-cadherin, cyclin D1, ephrinB2, and other target genes by binding E-box and related promoter elements, recruiting the NuRD/HDAC1 corepressor complex to mediate transcriptional silencing, while also acting as a transcriptional activator of select targets (e.g., cadherin-11, ACSL4, ETS1) through cooperation with Sp1 or direct E-box engagement [PMID:11430829, PMID:17855508, PMID:18182442, PMID:36951067, PMID:24130169]. ZEB2 operates within a double-negative feedback loop with the miR-200 family—each repressing the other's expression—and its protein levels are further controlled by the Zeb2-NAT antisense transcript that promotes its translation, by ubiquitin-proteasome-mediated degradation, and by upstream transcription factors including HIF-1α, NFIL3, C/EBPs, FoxQ1, and MEF2A [PMID:18829540, PMID:17585049, PMID:29311544, PMID:21727196, PMID:35732734]. In the immune system, ZEB2 drives age-associated B cell and terminal effector CD8+ T cell differentiation, specifies cDC2 fate through an Nfil3-Zeb2-Id2 circuit, programs tumor-associated macrophage identity, and is required broadly for hematopoietic lineage output; in the nervous system it controls cortical interneuron migration (via Unc5b repression), axonal growth (via ninein), Schwann cell myelination, Bergmann glia specification, and astrogliosis [PMID:38271512, PMID:29449309, PMID:31406377, PMID:40215981, PMID:23312517, PMID:25741725, PMID:27294512, PMID:32610135].\",\n  \"teleology\": [\n    {\n      \"year\": 2001,\n      \"claim\": \"The central question of how ZEB2 drives epithelial-to-mesenchymal transition was answered by demonstrating that ZEB2 directly represses E-cadherin through binding to conserved E2-boxes in its promoter, establishing ZEB2 as a direct transcriptional repressor of cell adhesion.\",\n      \"evidence\": \"Promoter binding assays with E-box mutagenesis and conditional expression in MDCK cells\",\n      \"pmids\": [\"11430829\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether ZEB2 requires cofactors for E-cadherin repression was not addressed\", \"Genome-wide binding profile not yet determined\", \"Post-translational regulation of ZEB2 unknown\"]\n    },\n    {\n      \"year\": 2006,\n      \"claim\": \"ZEB2's transcriptional program was extended beyond E-cadherin repression to include activation of mesenchymal genes (vimentin) and matrix metalloproteinases, and its regulation was linked to the HIF-VHL oxygen-sensing axis, connecting ZEB2 to tumor hypoxia responses.\",\n      \"evidence\": \"RNAi and overexpression in breast cancer and renal carcinoma cells; VHL re-expression and HIF knockdown epistasis\",\n      \"pmids\": [\"16568083\", \"17060462\", \"15026811\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether HIF directly binds the ZEB2 promoter was not resolved\", \"Mechanism of vimentin activation (direct vs. indirect) undetermined\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Three breakthroughs established ZEB2's regulatory architecture: (1) a double-negative feedback loop with miR-200 family was identified, creating a bistable EMT switch; (2) ZEB2 was shown to repress cyclin D1, coupling EMT to cell cycle arrest; and (3) ZEB2 was found to recruit the NuRD corepressor complex, with a Mowat-Wilson syndrome patient mutation disrupting this interaction.\",\n      \"evidence\": \"ChIP, promoter reporters, miRNA overexpression/inhibition; mass spectrometry of affinity-purified complexes; Xenopus neural induction assays with domain mutants\",\n      \"pmids\": [\"18829540\", \"18376396\", \"17855508\", \"18182442\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Structural basis of NuRD-ZEB2 interaction unresolved\", \"Whether ZEB2 and ZEB1 have redundant roles in the miR-200 loop not fully dissected\", \"Whether NuRD mediates all or only some ZEB2 repressive activities unknown\"]\n    },\n    {\n      \"year\": 2010,\n      \"claim\": \"ZEB2's role was expanded beyond cancer EMT to pluripotency decisions: in human ESCs, ZEB2 limits Activin-Nodal/SMAD signaling to direct neuroectodermal versus mesendodermal specification.\",\n      \"evidence\": \"Loss- and gain-of-function in hESCs with epistasis to Activin-Nodal pathway components\",\n      \"pmids\": [\"20074535\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct transcriptional targets in hESC context not identified by ChIP\", \"Whether ZEB2 engages NuRD in this context untested\"]\n    },\n    {\n      \"year\": 2011,\n      \"claim\": \"Post-translational control of ZEB2 protein stability was established: the F-box protein Ppa targets ZEB2 for ubiquitin-proteasome degradation, providing a mechanism for rapid EMT factor turnover.\",\n      \"evidence\": \"Protein stability assays, proteasome inhibitor treatment, domain mapping, Xenopus epistasis\",\n      \"pmids\": [\"21727196\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Specific ubiquitin chain type and lysine residues not mapped\", \"Whether Ppa is the sole E3 ligase for ZEB2 unknown\", \"Regulation of Ppa itself not addressed\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"ZEB2 was shown to function as a transcriptional activator—not only a repressor—by cooperating with Sp1 to transactivate cadherin-11 and integrin α5, and by directly activating ETS1, revealing a dual-mode transcription factor.\",\n      \"evidence\": \"ChIP and promoter reporters for Sp1-dependent activation; ChIP on ETS1 promoter with inducible ZEB2 expression\",\n      \"pmids\": [\"24130169\", \"30790340\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Structural basis for context-dependent switching between repression and activation unknown\", \"Whether Sp1 cooperation is genome-wide or restricted to specific loci untested\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"ZEB2's essential role in cortical interneuron migration was mechanistically resolved: Zeb2 represses the guidance receptor Unc5b, and genetic reduction of Unc5b rescues migration in Zeb2-null interneurons, establishing a repressor-of-repulsion mechanism.\",\n      \"evidence\": \"Conditional Zeb2 KO in interneurons, RNA-seq, focal Unc5b electroporation rescue\",\n      \"pmids\": [\"23312517\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether additional guidance receptors are ZEB2 targets not fully explored\", \"Mechanism of ZEB2 binding at Unc5b locus not shown by ChIP\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"ZEB2's control of axonal morphogenesis was traced to a specific effector: ninein, a microtubule-binding protein directly activated by ZEB2, mediates axonal growth and cortical branching.\",\n      \"evidence\": \"Conditional Zeb2 KO in postmitotic neurons, ChIP confirming ninein as direct target, ninein rescue experiments\",\n      \"pmids\": [\"25741725\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether ninein is the sole mediator of ZEB2-dependent axonal phenotypes unknown\", \"How ZEB2 activates rather than represses ninein transcription mechanistically unclear\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"ZEB2 was established as essential for multiple neural and hematopoietic lineages: Schwann cell myelination (repressing Sox2/Ednrb as an 'inhibitor of inhibitors'), broad hematopoietic differentiation (regulating JAK-STAT and ERK signaling, M-CSF receptor expression, and pDC development), and myeloid differentiation in AML (controlled by miR-200 methylation).\",\n      \"evidence\": \"Schwann cell-specific and bone marrow-inducible Zeb2 KO in mice; RNA-seq; genome-scale shRNA screens in AML\",\n      \"pmids\": [\"27294512\", \"27683414\", \"27930303\", \"27756750\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct ChIP targets in hematopoietic cells not systematically mapped\", \"Whether ZEB2 roles in pDC and monocyte development share common target genes unknown\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"ZEB2's immune functions were extended to adaptive immunity and its translational regulation clarified: ZEB2 promotes terminal effector CD8+ T cell fate (opposing ZEB1-driven memory), interacts with the demethylase KDM1A/LSD1 in T-ALL, and the Zeb2-NAT antisense lncRNA controls ZEB2 protein translation, influencing somatic cell reprogramming.\",\n      \"evidence\": \"Conditional KO of Zeb1/Zeb2 in CD8+ T cells; co-IP of ZEB2-KDM1A; LNA knockdown of Zeb2-NAT with reprogramming and pluripotency assays\",\n      \"pmids\": [\"29449309\", \"28069602\", \"29311544\", \"29326173\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether KDM1A interaction is direct or bridged by NuRD not resolved\", \"p53-miR-30a-ZEB2 axis identified concurrently but integration with miR-200 loop unclear\", \"Zeb2-NAT mechanism of translational control (IRES retention vs. other) not fully dissected\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"A complete genetic circuit governing dendritic cell specification was delineated: NFIL3 represses Zeb2, and low Zeb2 permits Id2 upregulation to commit progenitors to the cDC1 lineage, positioning Zeb2 as the central node in DC fate decisions.\",\n      \"evidence\": \"Genetic epistasis in conditional KO mice, CUT&RUN and ChIP-seq for direct NFIL3 binding at Zeb2\",\n      \"pmids\": [\"31406377\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How Zeb2 represses Id2 (direct binding vs. intermediate) not shown\", \"Whether this circuit operates identically in human DC development untested\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Enhancer-level regulatory logic of Zeb2 was resolved: NFIL3 and C/EBP factors bind a −165 kb Zeb2 enhancer with opposing effects, and triple CRISPR mutation of these sites ablates Zeb2 selectively in myeloid progenitors, causing complete loss of cDC2 specification; simultaneously, ZEB2 was shown to control smooth muscle cell phenotypic transitions during atherosclerosis through chromatin remodeling.\",\n      \"evidence\": \"CUT&RUN/ChIP-seq with in vivo CRISPR triple-site mutagenesis; scATAC-seq and scRNA-seq in SMC-specific Zeb2 KO atherosclerosis model\",\n      \"pmids\": [\"35732734\", \"34990206\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether additional distal enhancers regulate Zeb2 in other lineages unknown\", \"How ZEB2 remodels chromatin at SMC loci—direct NuRD recruitment vs. other mechanisms—not resolved\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"ZEB2's effector mechanism was further specified in endothelial pathology: ZEB2 recruits the HDAC1-NuRD complex to repress CTH/CSE, reducing H2S and PDI S-sulfhydration to drive aortic aneurysm; separately, a ZEB2-ACSL4 positive feedback loop linking transcriptional activation to protein stabilization was identified in breast cancer metastasis.\",\n      \"evidence\": \"Co-IP/MS, ChIP at CTH promoter, endothelial HDAC1 KO mice; ChIP at ACSL4 promoter with ubiquitination assays and in vivo metastasis models\",\n      \"pmids\": [\"36951067\", \"38078907\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether ACSL4-mediated ZEB2 stabilization occurs in non-cancer contexts unknown\", \"Specific HDAC1 deacetylation targets at the CTH locus not identified\"]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"ZEB2 was identified as a driver of age-associated B cell differentiation by directly repressing the MEF2B intronic enhancer, thereby blocking germinal center fate; ZEB2 haploinsufficiency in humans reduces ABC formation, and JAK-STAT signaling is required for ZEB2-driven ABC differentiation, linking ZEB2 to autoimmunity.\",\n      \"evidence\": \"ZEB2 haploinsufficient human subjects, B cell-specific Zeb2 KO mice, ChIP/binding at MEF2B enhancer, JAK inhibitor treatment in TLR7-driven lupus model\",\n      \"pmids\": [\"38271512\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Full ZEB2 cistrome in B cells not yet mapped\", \"Whether ZEB2-driven ABC program is identical across autoimmune diseases unknown\"]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"ZEB2 was established as the master transcription factor of tumor-associated macrophage identity, controlling chromatin accessibility, interferon response suppression, and immune evasion programs; genetic ablation of Zeb2 in TAMs reprograms them and mobilizes anti-tumor T cell responses.\",\n      \"evidence\": \"Integrative scRNA-seq with CRISPR screen, gene perturbation network analysis, conditional Zeb2 KO in TAMs with in vivo tumor models\",\n      \"pmids\": [\"40215981\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct ZEB2 target genes in TAMs not validated by ChIP\", \"Whether TAM reprogramming by ZEB2 deletion synergizes with checkpoint immunotherapy not tested\", \"Single lab finding awaiting independent replication\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"A genome-wide, cell-type-resolved map of ZEB2 binding sites across its diverse lineage contexts is lacking, and the structural basis for ZEB2's context-dependent switching between transcriptional repression (NuRD/HDAC recruitment) and activation (Sp1 cooperation) remains unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Low\",\n      \"gaps\": [\"No crystal or cryo-EM structure of ZEB2 or ZEB2-NuRD complex\", \"Systematic CUT&RUN/ChIP-seq across immune, neural, and epithelial contexts not performed\", \"How ZEB2 versus ZEB1 target specificity is achieved at the DNA-binding level is unknown\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [0, 1, 2, 4, 7, 8, 14, 15, 16, 20, 25, 30]},\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [0, 1, 2, 4, 7, 8, 12, 13, 14, 15, 16, 20, 25, 30, 31]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [0, 1, 2, 4, 7, 8, 14, 16, 20, 25]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"GO:0074160\", \"supporting_discovery_ids\": [0, 1, 2, 7, 8, 12, 14, 15, 16, 20, 25, 30, 31]},\n      {\"term_id\": \"R-HSA-162582\", \"supporting_discovery_ids\": [9, 19, 22, 25]},\n      {\"term_id\": \"R-HSA-168256\", \"supporting_discovery_ids\": [21, 22, 23, 24, 25, 31]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [9, 12, 13, 14, 28]},\n      {\"term_id\": \"R-HSA-4839726\", \"supporting_discovery_ids\": [19, 20, 24]}\n    ],\n    \"complexes\": [\n      \"NuRD\"\n    ],\n    \"partners\": [\n      \"CHD3\",\n      \"HDAC1\",\n      \"KDM1A\",\n      \"SP1\",\n      \"ACSL4\",\n      \"NFIL3\"\n    ],\n    \"other_free_text\": []\n  }\n}\n```"}