{"gene":"ZNF281","run_date":"2026-06-11T09:02:07","timeline":{"discoveries":[{"year":2013,"finding":"ZNF281 is directly transcriptionally induced by SNAIL (EMT transcription factor) and directly repressed by miR-34a/b/c, forming a coherent feed-forward loop. ZNF281 in turn directly activates SNAIL transcription, and ectopic ZNF281 induces EMT, increases migration/invasion, β-catenin activity, stemness markers LGR5/CD133, and sphere formation. Knockdown causes MET and inhibits lung metastases in mice. c-MYC induces ZNF281 protein in a SNAIL-dependent manner, and ZNF281 inactivation prevented EMT induced by c-MYC or SNAIL.","method":"ChIP, luciferase reporter assays, miR-34a target validation, siRNA knockdown, ectopic expression in CRC cells, xenograft metastasis model","journal":"The EMBO journal","confidence":"High","confidence_rationale":"Tier 2 / Strong — reciprocal transcriptional regulation validated by ChIP + luciferase + multiple functional assays including in vivo metastasis, single rigorous study with multiple orthogonal methods","pmids":["24185900"],"is_preprint":false},{"year":2014,"finding":"ZNF281 physically interacts with the pluripotency transcription factors NANOG, OCT4, SOX2, and c-MYC, implicating it in regulation of stemness and pluripotency networks.","method":"Co-immunoprecipitation (reported in review citing original interaction data)","journal":"Journal of molecular medicine (Berlin, Germany)","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — interaction cited in review with reference to experimental data; no full experimental detail in this abstract","pmids":["24838609"],"is_preprint":false},{"year":2015,"finding":"ZNF281 transcriptionally activates XRCC2 (homologous recombination) and XRCC4 (NHEJ) through direct DNA-binding at their promoters. Cells silenced for ZNF281 show delayed DNA repair after etoposide treatment. c-MYC also binds the same promoters but cannot activate transcription or modify ZNF281 activity.","method":"Chromatin immunoprecipitation (ChIP), luciferase reporter assays, comet assay, siRNA knockdown","journal":"Oncogene","confidence":"High","confidence_rationale":"Tier 2 / Moderate — ChIP + luciferase + functional comet assay, multiple orthogonal methods in single study establishing direct transcriptional regulation","pmids":["26300006"],"is_preprint":false},{"year":2017,"finding":"ZNF281 promotes pancreatic cancer cell proliferation and invasion by directly binding β-catenin and decreasing its polyubiquitination, thereby activating Wnt/β-catenin signaling and downstream gene expression.","method":"Co-immunoprecipitation, Topflash luciferase assay, ectopic expression and knockdown, Western blot","journal":"Digestive diseases and sciences","confidence":"Medium","confidence_rationale":"Tier 3 / Weak — single Co-IP with functional Topflash assay, single lab, single study","pmids":["28523575"],"is_preprint":false},{"year":2017,"finding":"GSK-3β (not GSK-3α) phosphorylates ZNF281 at a consensus TSGEHS motif (S638), promoting interaction of ZNF281 with β-TrCP2 (not β-TrCP1), leading to ZNF281 ubiquitination and proteasomal degradation. A ZNF281-S638A mutant is resistant to this degradation. ZNF281 also transcriptionally represses β-TrCP2, forming a negative feedback loop.","method":"Mutational analysis (S638A), co-immunoprecipitation, ubiquitination assay, Western blot, CRC cell lines","journal":"Oncotarget","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — phosphorylation site mutagenesis + Co-IP + ubiquitination assay in single lab study","pmids":["29179460"],"is_preprint":false},{"year":2019,"finding":"ZNF281 is rapidly recruited to DNA double-strand break sites (within seconds of damage) via a mechanism dependent on its DNA-binding domain and, at least in part, PARP activity. ZNF281 physically binds XRCC4 through its zinc-finger domain and facilitates XRCC4 recruitment to damage sites. Depletion of ZNF281 impairs NHEJ efficiency and decreases cell viability after DNA damage.","method":"Live-cell imaging of recruitment kinetics, PARP inhibitor treatment, Co-immunoprecipitation (ZNF281-XRCC4), siRNA depletion with NHEJ reporter assay","journal":"Oncogene","confidence":"High","confidence_rationale":"Tier 2 / Moderate — live imaging + Co-IP + functional NHEJ assay + domain mutagenesis, multiple orthogonal methods in single rigorous study","pmids":["31570788"],"is_preprint":false},{"year":2019,"finding":"ZNF281 (Zfp281) physically associates with the master erythroid transcription factor GATA1, co-occupies many chromatin sites with GATA1 and Zfp148, and regulates a common set of erythroid differentiation genes. Combined deficiency of Zfp148 and Zfp281 causes a marked erythroid maturation block, demonstrating functional redundancy.","method":"Co-immunoprecipitation (Zfp281-GATA1), ChIP-seq, conditional knockout mice, genetic epistasis (double knockout)","journal":"Blood advances","confidence":"High","confidence_rationale":"Tier 2 / Strong — Co-IP + ChIP-seq + genetic epistasis in vivo, multiple orthogonal methods establishing both physical interaction and functional role","pmids":["31455666"],"is_preprint":false},{"year":2019,"finding":"ZNF281 knockdown in CRC cells suppresses cell proliferation, migration, and invasion by inhibiting the Wnt/β-catenin pathway.","method":"siRNA knockdown, Transwell assay, wound healing assay, Western blot","journal":"Cellular physiology and biochemistry","confidence":"Low","confidence_rationale":"Tier 3 / Weak — single lab, pathway placement by Western blot only, no direct binding or reporter assay","pmids":["31112017"],"is_preprint":false},{"year":2019,"finding":"ZNF281/Zfp281 is down-regulated during epithelial, muscle, and granulocytic differentiation. ZNF281 inhibits muscle differentiation promoted by miR-1, and is a direct post-transcriptional target of miR-1 acting through the ZNF281 3'UTR.","method":"3'UTR luciferase reporter assays for miR binding sites, differentiation assays, expression analysis in rhabdomyosarcoma/leiomyosarcoma","journal":"Molecular oncology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — functional 3'UTR luciferase validation + differentiation assays, multiple methods in single lab study","pmids":["31782884"],"is_preprint":false},{"year":2020,"finding":"ZNF281 transactivates the EMT-related transcription factors ZEB1 and Snail. Both ZEB1 and Snail can transcriptionally suppress miR-543 expression, while miR-543 directly targets ZNF281, establishing a ZNF281-miR-543 feedback loop that regulates TGF-β-induced breast cancer metastasis.","method":"Luciferase reporter assay, ChIP, miR-543 target validation, in vitro and in vivo metastasis assays","journal":"Molecular therapy. Nucleic acids","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP + luciferase for direct transactivation + in vivo metastasis validation, single lab","pmids":["32512343"],"is_preprint":false},{"year":2012,"finding":"ZNF281 binds the promoter region of β-CATENIN and transcriptionally regulates its expression. ZNF281 knockdown in human multipotent stem cells (hMSCs) leads to spontaneous osteochondrogenic differentiation in vivo and in vitro, while overexpression accelerates proliferation. β-CATENIN expression correlates with ZNF281 expression.","method":"ChIP assay, siRNA knockdown, overexpression, in vivo subcutaneous implantation with β-TCP scaffold","journal":"Cell transplantation","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP + in vivo functional assay + gain/loss of function, single lab","pmids":["22963690"],"is_preprint":false},{"year":2022,"finding":"ZNF281 directly binds the 5'-GGCGGCGGGCGG-3' motif in the HK2 promoter and transcriptionally represses HK2 expression, thereby suppressing HK2-PINK1/Parkin signaling-mediated mitophagy and driving hepatocyte senescence in alcoholic liver disease. Knockdown of ZNF281 (including by AAV-shRNA in vivo) rescues mitophagy and reduces senescence.","method":"ChIP assay, promoter binding motif identification, siRNA knockdown, AAV-shRNA in vivo knockdown, mitophagy/senescence assays","journal":"Cell proliferation","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP showing direct promoter binding + in vivo AAV rescue, single lab, multiple orthogonal methods","pmids":["36514923"],"is_preprint":false},{"year":2022,"finding":"SUFU binds ZNF281 and masks its nuclear localization signal (NLS), causing cytoplasmic retention of ZNF281, thereby suppressing ZNF281-induced tumor cell migration and DNA damage repair. SUFU also hampers interactions between ZNF281 and promoters of target genes. This defines a Hedgehog-independent anti-tumor role for SUFU.","method":"Co-immunoprecipitation, subcellular fractionation/localization assays, in vivo tumor cell migration model, ChIP (promoter binding inhibition)","journal":"Cell death and differentiation","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP + localization assay + functional in vivo model, single lab with multiple orthogonal methods","pmids":["36220888"],"is_preprint":false},{"year":2022,"finding":"ZNF281 is required for colon fibroblast activation and myofibroblast differentiation in response to TGFβ1. ZNF281 knockdown in fibroblasts reduces expression of genes involved in extracellular matrix composition, remodeling, and cell contraction, as identified by RNA-sequencing.","method":"siRNA knockdown, RNA-sequencing, TGFβ1 stimulation assay, DSS colitis mouse model","journal":"International journal of molecular sciences","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — RNA-seq transcriptomics + in vivo mouse model + siRNA, single lab","pmids":["36142169"],"is_preprint":false},{"year":2023,"finding":"ZNF281 suppresses transcription of TFAM, NRF1, and PGC-1α (mitochondrial biogenesis regulators), and physically interacts with NRF1 and PGC-1α. ZNF281 is recruited to the promoter regions of TFAM, TFB1M, and TFB2M to repress their expression. Knockdown of ZNF281 increases mitochondrial content, OCR, and TCA cycle intermediates, and knockdown of TFAM reverses these effects. This suppression of mitochondrial biogenesis facilitates HCC invasion and metastasis.","method":"Co-immunoprecipitation (ZNF281-NRF1, ZNF281-PGC-1α), ChIP, siRNA knockdown, OCR measurement, RNA-seq, xenograft metastasis model","journal":"Cell death discovery","confidence":"High","confidence_rationale":"Tier 2 / Moderate — Co-IP + ChIP + functional rescue experiment (TFAM KD reversal) + in vivo metastasis, multiple orthogonal methods in single rigorous study","pmids":["37880213"],"is_preprint":false},{"year":2023,"finding":"ZNF281 interacts with the ANXA10 promoter at ZNF281 recognition sites and recruits components of the NuRD complex (including HDAC1 and MTA1) to transcriptionally repress tumor suppressor ANXA10. Knockdown of HDAC1 or MTA1 releases ANXA10 from repression and reverses EMT, invasion, and metastasis driven by ZNF281.","method":"ChIP, Co-immunoprecipitation (ZNF281-NuRD components), RNA-seq (target identification), siRNA knockdown of HDAC1/MTA1, in vivo pulmonary metastasis model","journal":"Journal of hepatocellular carcinoma","confidence":"High","confidence_rationale":"Tier 2 / Moderate — ChIP + Co-IP + RNA-seq + in vivo rescue, multiple orthogonal methods in a single rigorous study","pmids":["37041757"],"is_preprint":false},{"year":2024,"finding":"ZNF281 upregulates the RIPK1/RIPK3/MLKL necroptosis signaling axis in hepatocytes under free fatty acid stress, promoting lipid accumulation and inflammatory cell death in NASH. Hepatocyte-specific Zfp281 knockout prevents NASH diet-induced liver injury, steatosis, inflammation, and fibrosis. Pterostilbene was identified as a ZNF281 inhibitor that recapitulates these protective effects.","method":"Hepatocyte-specific conditional knockout mice (AAV-shRNA), Western blot for RIPK1/RIPK3/MLKL, in vivo NASH diet model, pharmacological inhibition with pterostilbene","journal":"International immunopharmacology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — cell-type specific in vivo KO with mechanistic pathway identification, single lab","pmids":["39724734"],"is_preprint":false},{"year":2024,"finding":"ZNF281 forms a positive feedback loop with FOXO3 to sense elevated ROS levels, potentially regulating mitochondrial respiratory chain components and superoxide dismutase (SOD) expression in corneal cells during aging. Overexpression of ZNF281 in MSCs prevented cellular senescence.","method":"Single-cell transcriptomics (comparative nonhuman primate), ZNF281 overexpression in MSCs, ROS/senescence assays","journal":"Aging cell","confidence":"Low","confidence_rationale":"Tier 3 / Weak — single-cell transcriptomics-driven discovery with limited functional validation, single lab, limited mechanistic detail in abstract","pmids":["39254179"],"is_preprint":false},{"year":2026,"finding":"Anticancer agents (intercalating/alkylating agents, tyrosine kinase inhibitors, receptor inhibitors) converge to increase selective translational upregulation of ZNF281 in cardiomyocytes as part of the integrated stress response. Cardiomyocyte-specific ZNF281-deficient mice are resistant to anthracycline-induced cardiotoxicity, while cardiomyocyte-specific ZNF281-overexpressing mice develop cardiotoxicity features. A small-molecule inhibitor ZIM prevented anthracycline-induced cardiotoxicity and enhanced anti-tumor effects.","method":"Cardiomyocyte-specific conditional knockout and overexpression mice, anthracycline cardiotoxicity model, small-molecule inhibitor (ZIM), translational analysis, human myocardial tissue validation","journal":"Science translational medicine","confidence":"High","confidence_rationale":"Tier 2 / Strong — cell-type specific KO and OE mouse models + pharmacological inhibition + human tissue validation, multiple orthogonal methods in single rigorous study","pmids":["41984928"],"is_preprint":false},{"year":2026,"finding":"Znf281 (Xenopus ortholog) overexpression reduces levels of phosphorylated Smad1/5/8 (downstream effectors of BMP signaling), thereby promoting neural tissue formation and inhibiting epidermal differentiation in ectodermal explants. Knockdown of Znf281 reduces expression of neural markers, establishing a required role in early neural development via modulation of BMP signaling.","method":"Xenopus embryo overexpression and morpholino knockdown, pSmad1/5/8 Western blot, neural/epidermal marker expression analysis","journal":"Development, growth & differentiation","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — gain and loss of function in vivo with mechanistic pathway identification (BMP/Smad), single lab","pmids":["41536077"],"is_preprint":false}],"current_model":"ZNF281 is a Krüppel-type zinc-finger transcription factor that directly binds GC-rich promoter sequences to activate (SNAIL, XRCC2, XRCC4, stemness genes) or repress (β-TrCP2, HK2, TFAM/NRF1/PGC-1α, ANXA10) target gene transcription, often by recruiting co-repressor complexes such as NuRD; its activity and stability are regulated post-translationally by GSK-3β phosphorylation (at S638) and subsequent β-TrCP2-mediated ubiquitination/degradation, by SUFU-mediated cytoplasmic sequestration masking its NLS, and at the translational level via the integrated stress response in cardiomyocytes; it physically interacts with GATA1, NANOG, OCT4, SOX2, c-MYC, β-catenin, NRF1, PGC-1α, XRCC4, and SUFU, placing it at the intersection of EMT, DNA damage repair (NHEJ), stemness, mitochondrial biogenesis, and stress-response networks."},"narrative":{"mechanistic_narrative":"ZNF281 is a Krüppel-type zinc-finger transcription factor that binds GC-rich promoter elements to govern epithelial-mesenchymal transition (EMT), stemness, DNA repair, and metabolic gene programs [PMID:24185900, PMID:26300006]. In the EMT axis it sits within a coherent feed-forward loop: it is induced by SNAIL and repressed by miR-34, then directly transactivates SNAIL (and ZEB1) to drive migration, invasion, stemness markers, and metastasis, with knockdown enforcing mesenchymal-to-epithelial reversion [PMID:24185900, PMID:32512343]. It promotes Wnt/β-catenin signaling both by binding the β-CATENIN promoter and by binding β-catenin protein to reduce its polyubiquitination [PMID:28523575, PMID:22963690]. ZNF281 acts as a positive regulator of DNA double-strand break repair, directly activating XRCC2 and XRCC4 transcription and being recruited to break sites within seconds in a DNA-binding-domain- and PARP-dependent manner, where it binds XRCC4 through its zinc fingers to facilitate non-homologous end joining [PMID:26300006, PMID:31570788]. As a transcriptional repressor it recruits the NuRD complex (HDAC1, MTA1) to silence the tumor suppressor ANXA10, and it suppresses mitochondrial biogenesis by repressing TFAM, NRF1, and PGC-1α while physically interacting with NRF1 and PGC-1α [PMID:37880213, PMID:37041757]. Its activity is constrained post-translationally: GSK-3β phosphorylates ZNF281 at S638 to trigger β-TrCP2-mediated ubiquitination and degradation (a loop reinforced by ZNF281 repression of β-TrCP2), and SUFU sequesters ZNF281 in the cytoplasm by masking its nuclear localization signal [PMID:29179460, PMID:36220888]. Beyond cancer, ZNF281 partners with GATA1 to control erythroid maturation [PMID:31455666], and drives pathological tissue responses including hepatocyte senescence, NASH-associated necroptosis, and integrated-stress-response-driven cardiomyocyte toxicity [PMID:36514923, PMID:39724734, PMID:41984928].","teleology":[{"year":2012,"claim":"Established a direct transcriptional link between ZNF281 and Wnt signaling and a role in stem cell fate, addressing how ZNF281 influences progenitor proliferation versus differentiation.","evidence":"ChIP at the β-CATENIN promoter plus gain/loss-of-function and in vivo scaffold implantation in human multipotent stem cells","pmids":["22963690"],"confidence":"Medium","gaps":["Whether ZNF281 activates or represses β-CATENIN under different contexts not resolved","Single lab; co-regulators at the promoter unknown"]},{"year":2013,"claim":"Defined ZNF281 as a core node of an EMT feed-forward loop, answering how it is wired into the SNAIL/miR-34 circuit and whether it drives metastasis.","evidence":"ChIP, luciferase reporters, miR-34 target validation, ectopic/knockdown studies and xenograft metastasis in colorectal cancer cells","pmids":["24185900"],"confidence":"High","gaps":["Direct co-repressor/co-activator partners at the SNAIL promoter not defined","Did not address post-translational control of ZNF281"]},{"year":2014,"claim":"Placed ZNF281 within the pluripotency network by identifying its physical association with core stemness factors.","evidence":"Co-immunoprecipitation reported via review citing original interaction data","pmids":["24838609"],"confidence":"Medium","gaps":["No full experimental detail in the cited abstract","Functional consequence of each interaction not delineated"]},{"year":2015,"claim":"Revealed an unexpected role in DNA repair by showing ZNF281 directly transactivates HR and NHEJ effector genes, distinguishing its activity from c-MYC at the same promoters.","evidence":"ChIP, luciferase reporters, comet assay and siRNA knockdown after etoposide","pmids":["26300006"],"confidence":"High","gaps":["Did not establish whether ZNF281 acts at break sites directly","Mechanism distinguishing ZNF281 from c-MYC at shared promoters not explained"]},{"year":2017,"claim":"Clarified how ZNF281 promotes Wnt signaling at the protein level and how it is degraded, defining both an activating interaction with β-catenin and a GSK-3β/β-TrCP2 turnover loop.","evidence":"Co-IP, Topflash reporters, S638A mutagenesis and ubiquitination assays in pancreatic and colorectal cancer cells","pmids":["28523575","29179460"],"confidence":"Medium","gaps":["Single Co-IP for β-catenin without reciprocal structural validation","Whether GSK-3β-driven degradation operates across all ZNF281 functions not tested"]},{"year":2019,"claim":"Demonstrated that ZNF281 is a bona fide DNA-damage response factor recruited to break sites and physically delivering XRCC4 to support NHEJ.","evidence":"Live-cell imaging of recruitment kinetics, PARP inhibition, ZNF281-XRCC4 Co-IP, domain mutagenesis and NHEJ reporter assays","pmids":["31570788"],"confidence":"High","gaps":["Signal triggering second-scale recruitment beyond partial PARP dependence not fully defined","Structural basis of the zinc-finger/XRCC4 interaction unknown"]},{"year":2019,"claim":"Established a tissue-specific developmental role by showing ZNF281 partners with GATA1 and Zfp148 to control erythroid maturation.","evidence":"Co-IP, ChIP-seq co-occupancy and double-knockout genetic epistasis in mice","pmids":["31455666","31782884","31112017"],"confidence":"High","gaps":["Whether ZNF281 activates or represses erythroid targets directly not fully parsed","Redundancy mechanism with Zfp148 at the molecular level unresolved"]},{"year":2020,"claim":"Extended the EMT circuitry into breast cancer by adding ZEB1 transactivation and a miR-543 feedback loop downstream of TGF-β.","evidence":"ChIP, luciferase reporters, miR-543 target validation and in vitro/in vivo metastasis assays","pmids":["32512343"],"confidence":"Medium","gaps":["Direct versus indirect contribution of each loop arm to metastasis not separated","Single lab"]},{"year":2022,"claim":"Identified two distinct control mechanisms — repressive metabolic gene targeting and cytoplasmic sequestration by SUFU — expanding how ZNF281 output is set.","evidence":"ChIP at the HK2 promoter with AAV-shRNA rescue; Co-IP, subcellular fractionation and ChIP inhibition for SUFU; RNA-seq and DSS colitis model for fibroblast activation","pmids":["36514923","36220888","36142169"],"confidence":"Medium","gaps":["Whether SUFU regulation is constitutive or signal-dependent unknown","Direct fibroblast target genes not individually validated"]},{"year":2023,"claim":"Defined the repressive machinery ZNF281 uses, showing recruitment of the NuRD complex to silence ANXA10 and direct repression of mitochondrial biogenesis regulators.","evidence":"ChIP, Co-IP of ZNF281 with NuRD components and with NRF1/PGC-1α, RNA-seq, functional rescue (TFAM knockdown) and in vivo metastasis models","pmids":["37041757","37880213"],"confidence":"High","gaps":["Determinants selecting activating versus NuRD-repressive mode at a given promoter unknown","Stoichiometry of ZNF281 within NuRD not defined"]},{"year":2024,"claim":"Connected ZNF281 to pathological cell death and stress, implicating it in NASH necroptosis, cardiotoxicity via the integrated stress response, and ROS-sensing senescence control.","evidence":"Hepatocyte- and cardiomyocyte-specific KO/OE mice, RIPK1/RIPK3/MLKL Western blot, anthracycline and NASH models, small-molecule inhibitors, single-cell transcriptomics and MSC senescence assays","pmids":["39724734","41984928","39254179"],"confidence":"High","gaps":["Direct transcriptional targets driving necroptosis and cardiotoxicity not fully mapped","FOXO3/ROS loop in corneal cells rests on limited functional validation"]},{"year":2026,"claim":"Established a developmental neural patterning role for the ortholog by linking ZNF281 to BMP/Smad signaling modulation.","evidence":"Xenopus overexpression and morpholino knockdown with pSmad1/5/8 Western blot and neural/epidermal marker analysis","pmids":["41536077"],"confidence":"Medium","gaps":["Whether ZNF281 acts directly on BMP pathway genes or indirectly not resolved","Mammalian relevance of the neural role untested"]},{"year":null,"claim":"How ZNF281 switches between transcriptional activation and NuRD-mediated repression at different promoters, and what upstream signals determine its context-specific output, remains unresolved.","evidence":"No single study reconciles its dual activator/repressor behavior across tissues","pmids":[],"confidence":"Medium","gaps":["No structural model of DNA or partner binding","Promoter-context determinants of activation versus repression unknown","Integration of phosphorylation, SUFU sequestration, and translational control into a unified regulatory logic not established"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[0,2,14,15]},{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[2,5,11,15]},{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[11]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[12]},{"term_id":"GO:0005829","term_label":"cytosol","supporting_discovery_ids":[12]},{"term_id":"GO:0000228","term_label":"nuclear chromosome","supporting_discovery_ids":[5]}],"pathway":[{"term_id":"R-HSA-73894","term_label":"DNA Repair","supporting_discovery_ids":[2,5]},{"term_id":"R-HSA-74160","term_label":"Gene expression (Transcription)","supporting_discovery_ids":[0,14,15]},{"term_id":"R-HSA-162582","term_label":"Signal Transduction","supporting_discovery_ids":[3,10]},{"term_id":"R-HSA-1266738","term_label":"Developmental Biology","supporting_discovery_ids":[6,19]}],"complexes":["NuRD complex"],"partners":["XRCC4","GATA1","NRF1","PPARGC1A","SUFU","CTNNB1","BTRC","NANOG"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"Q9Y2X9","full_name":"Zinc finger protein 281","aliases":["GC-box-binding zinc finger protein 1","Transcription factor ZBP-99","Zinc finger DNA-binding protein 99"],"length_aa":895,"mass_kda":96.9,"function":"Transcription repressor that plays a role in regulation of embryonic stem cells (ESCs) differentiation. Required for ESCs differentiation and acts by mediating autorepression of NANOG in ESCs: binds to the NANOG promoter and promotes association of NANOG protein to its own promoter and recruits the NuRD complex, which deacetylates histones. Not required for establishement and maintenance of ESCs (By similarity). Represses the transcription of a number of genes including GAST, ODC1 and VIM. Binds to the G-rich box in the enhancer region of these genes","subcellular_location":"Nucleus","url":"https://www.uniprot.org/uniprotkb/Q9Y2X9/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/ZNF281","classification":"Not Classified","n_dependent_lines":52,"n_total_lines":1208,"dependency_fraction":0.04304635761589404},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[{"gene":"CAPZB","stoichiometry":4.0}],"url":"https://opencell.sf.czbiohub.org/search/ZNF281","total_profiled":1310},"omim":[{"mim_id":"618703","title":"ZINC FINGER PROTEIN 281; ZNF281","url":"https://www.omim.org/entry/618703"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Enhanced","locations":[{"location":"Nucleoplasm","reliability":"Enhanced"}],"tissue_specificity":"Tissue enhanced","tissue_distribution":"Detected in all","driving_tissues":[{"tissue":"bone marrow","ntpm":31.7}],"url":"https://www.proteinatlas.org/search/ZNF281"},"hgnc":{"alias_symbol":["ZBP-99"],"prev_symbol":[]},"alphafold":{"accession":"Q9Y2X9","domains":[{"cath_id":"3.30.160.60","chopping":"258-315","consensus_level":"medium","plddt":87.7722,"start":258,"end":315},{"cath_id":"3.30.160.60","chopping":"316-370","consensus_level":"medium","plddt":83.5155,"start":316,"end":370}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9Y2X9","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q9Y2X9-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q9Y2X9-F1-predicted_aligned_error_v6.png","plddt_mean":46.53},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=ZNF281","jax_strain_url":"https://www.jax.org/strain/search?query=ZNF281"},"sequence":{"accession":"Q9Y2X9","fasta_url":"https://rest.uniprot.org/uniprotkb/Q9Y2X9.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q9Y2X9/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9Y2X9"}},"corpus_meta":[{"pmid":"24185900","id":"PMC_24185900","title":"SNAIL and miR-34a feed-forward regulation of ZNF281/ZBP99 promotes epithelial-mesenchymal transition.","date":"2013","source":"The EMBO journal","url":"https://pubmed.ncbi.nlm.nih.gov/24185900","citation_count":154,"is_preprint":false},{"pmid":"31243884","id":"PMC_31243884","title":"CircAGFG1 sponges miR-203 to promote EMT and metastasis of non-small-cell lung cancer by upregulating ZNF281 expression.","date":"2019","source":"Thoracic cancer","url":"https://pubmed.ncbi.nlm.nih.gov/31243884","citation_count":49,"is_preprint":false},{"pmid":"32801774","id":"PMC_32801774","title":"lncRNA UCA1 Contributes to 5-Fluorouracil Resistance of Colorectal Cancer Cells Through miR-23b-3p/ZNF281 Axis.","date":"2020","source":"OncoTargets and therapy","url":"https://pubmed.ncbi.nlm.nih.gov/32801774","citation_count":44,"is_preprint":false},{"pmid":"24838609","id":"PMC_24838609","title":"ZNF281/ZBP-99: a new player in epithelial-mesenchymal transition, stemness, and cancer.","date":"2014","source":"Journal of molecular medicine (Berlin, Germany)","url":"https://pubmed.ncbi.nlm.nih.gov/24838609","citation_count":43,"is_preprint":false},{"pmid":"26300006","id":"PMC_26300006","title":"ZNF281 contributes to the DNA damage response by controlling the expression of XRCC2 and XRCC4.","date":"2015","source":"Oncogene","url":"https://pubmed.ncbi.nlm.nih.gov/26300006","citation_count":39,"is_preprint":false},{"pmid":"31112017","id":"PMC_31112017","title":"ZNF281 Regulates Cell Proliferation, Migration and Invasion in Colorectal Cancer through Wnt/β-Catenin Signaling.","date":"2019","source":"Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology","url":"https://pubmed.ncbi.nlm.nih.gov/31112017","citation_count":33,"is_preprint":false},{"pmid":"36514923","id":"PMC_36514923","title":"ZNF281 drives hepatocyte senescence in alcoholic liver disease by reducing HK2-stabilized PINK1/Parkin-mediated mitophagy.","date":"2022","source":"Cell proliferation","url":"https://pubmed.ncbi.nlm.nih.gov/36514923","citation_count":28,"is_preprint":false},{"pmid":"31570788","id":"PMC_31570788","title":"ZNF281 is recruited on DNA breaks to facilitate DNA repair by non-homologous end joining.","date":"2019","source":"Oncogene","url":"https://pubmed.ncbi.nlm.nih.gov/31570788","citation_count":27,"is_preprint":false},{"pmid":"38286833","id":"PMC_38286833","title":"tRF3-IleAAT reduced extracellular matrix synthesis in diabetic kidney disease mice by targeting ZNF281 and inhibiting ferroptosis.","date":"2024","source":"Acta pharmacologica Sinica","url":"https://pubmed.ncbi.nlm.nih.gov/38286833","citation_count":27,"is_preprint":false},{"pmid":"30619271","id":"PMC_30619271","title":"Transcription Factor ZNF281: A Novel Player in Intestinal Inflammation and Fibrosis.","date":"2018","source":"Frontiers in immunology","url":"https://pubmed.ncbi.nlm.nih.gov/30619271","citation_count":27,"is_preprint":false},{"pmid":"28523575","id":"PMC_28523575","title":"ZNF281 Promotes Growth and Invasion of Pancreatic Cancer Cells by Activating Wnt/β-Catenin Signaling.","date":"2017","source":"Digestive diseases and sciences","url":"https://pubmed.ncbi.nlm.nih.gov/28523575","citation_count":23,"is_preprint":false},{"pmid":"22963690","id":"PMC_22963690","title":"ZNF281 knockdown induced osteogenic differentiation of human multipotent stem cells in vivo and in vitro.","date":"2012","source":"Cell transplantation","url":"https://pubmed.ncbi.nlm.nih.gov/22963690","citation_count":23,"is_preprint":false},{"pmid":"30509101","id":"PMC_30509101","title":"Novel lncRNA-ZNF281 regulates cell growth, stemness and invasion of glioma stem-like U251s cells.","date":"2018","source":"Neoplasma","url":"https://pubmed.ncbi.nlm.nih.gov/30509101","citation_count":22,"is_preprint":false},{"pmid":"37880213","id":"PMC_37880213","title":"ZNF281 inhibits mitochondrial biogenesis to facilitate metastasis of hepatocellular carcinoma.","date":"2023","source":"Cell death discovery","url":"https://pubmed.ncbi.nlm.nih.gov/37880213","citation_count":21,"is_preprint":false},{"pmid":"32512343","id":"PMC_32512343","title":"ZNF281-miR-543 Feedback Loop Regulates Transforming Growth Factor-β-Induced Breast Cancer Metastasis.","date":"2020","source":"Molecular therapy. Nucleic acids","url":"https://pubmed.ncbi.nlm.nih.gov/32512343","citation_count":20,"is_preprint":false},{"pmid":"36142169","id":"PMC_36142169","title":"ZNF281 Promotes Colon Fibroblast Activation in TGFβ1-Induced Gut Fibrosis.","date":"2022","source":"International journal of molecular sciences","url":"https://pubmed.ncbi.nlm.nih.gov/36142169","citation_count":18,"is_preprint":false},{"pmid":"34071380","id":"PMC_34071380","title":"ZNF-281 as the Potential Diagnostic Marker of Oral Squamous Cell Carcinoma.","date":"2021","source":"Cancers","url":"https://pubmed.ncbi.nlm.nih.gov/34071380","citation_count":18,"is_preprint":false},{"pmid":"36220888","id":"PMC_36220888","title":"Inhibition of the transcription factor ZNF281 by SUFU to suppress tumor cell migration.","date":"2022","source":"Cell death and differentiation","url":"https://pubmed.ncbi.nlm.nih.gov/36220888","citation_count":15,"is_preprint":false},{"pmid":"29179460","id":"PMC_29179460","title":"GSK-3β phosphorylation-dependent degradation of ZNF281 by β-TrCP2 suppresses colorectal cancer progression.","date":"2017","source":"Oncotarget","url":"https://pubmed.ncbi.nlm.nih.gov/29179460","citation_count":15,"is_preprint":false},{"pmid":"30885238","id":"PMC_30885238","title":"Expression of zinc finger transcription factors (ZNF143 and ZNF281) in serous borderline ovarian tumors and low-grade ovarian cancers.","date":"2019","source":"Journal of ovarian research","url":"https://pubmed.ncbi.nlm.nih.gov/30885238","citation_count":13,"is_preprint":false},{"pmid":"31782884","id":"PMC_31782884","title":"ZNF281/Zfp281 is a target of miR-1 and counteracts muscle differentiation.","date":"2019","source":"Molecular oncology","url":"https://pubmed.ncbi.nlm.nih.gov/31782884","citation_count":12,"is_preprint":false},{"pmid":"33320427","id":"PMC_33320427","title":"Circular RNA hsa_circ_0008003 facilitates tumorigenesis and development of non-small cell lung carcinoma via modulating miR-488/ZNF281 axis.","date":"2020","source":"Journal of cellular and molecular medicine","url":"https://pubmed.ncbi.nlm.nih.gov/33320427","citation_count":11,"is_preprint":false},{"pmid":"32782613","id":"PMC_32782613","title":"Long non-coding RNA-ZNF281 upregulates PTEN expression via downregulation of microRNA-221 in non-small cell lung cancer.","date":"2020","source":"Oncology letters","url":"https://pubmed.ncbi.nlm.nih.gov/32782613","citation_count":10,"is_preprint":false},{"pmid":"31455666","id":"PMC_31455666","title":"Zfp281 (ZBP-99) plays a functionally redundant role with Zfp148 (ZBP-89) during erythroid development.","date":"2019","source":"Blood advances","url":"https://pubmed.ncbi.nlm.nih.gov/31455666","citation_count":9,"is_preprint":false},{"pmid":"36685971","id":"PMC_36685971","title":"Multi-functional gene ZNF281 identified as a molecular biomarker in soft tissue regeneration and pan-cancer progression.","date":"2023","source":"Frontiers in genetics","url":"https://pubmed.ncbi.nlm.nih.gov/36685971","citation_count":8,"is_preprint":false},{"pmid":"37041757","id":"PMC_37041757","title":"Inhibition of Annexin A10 Contributes to ZNF281 Mediated Aggressiveness of Hepatocellular Carcinoma.","date":"2023","source":"Journal of hepatocellular carcinoma","url":"https://pubmed.ncbi.nlm.nih.gov/37041757","citation_count":8,"is_preprint":false},{"pmid":"32073896","id":"PMC_32073896","title":"LncRNA-ZNF281 Interacts with miR-539 to Promote Hepatocellular Carcinoma Cell Invasion and Migration.","date":"2020","source":"Cancer biotherapy & radiopharmaceuticals","url":"https://pubmed.ncbi.nlm.nih.gov/32073896","citation_count":7,"is_preprint":false},{"pmid":"38880820","id":"PMC_38880820","title":"Identification and validation of the role of ZNF281 in 5-fluorouracil chemotherapy of gastric cancer.","date":"2024","source":"Journal of cancer research and clinical oncology","url":"https://pubmed.ncbi.nlm.nih.gov/38880820","citation_count":6,"is_preprint":false},{"pmid":"32194679","id":"PMC_32194679","title":"Long non-coding RNA-ZNF281 promotes cancer cell migration and invasion in gastric cancer via downregulation of microRNA-124.","date":"2020","source":"Oncology letters","url":"https://pubmed.ncbi.nlm.nih.gov/32194679","citation_count":6,"is_preprint":false},{"pmid":"34604953","id":"PMC_34604953","title":"Cervical carcinoma progression is aggravated by lncRNA ZNF281 by binding KLF15.","date":"2021","source":"European review for medical and pharmacological sciences","url":"https://pubmed.ncbi.nlm.nih.gov/34604953","citation_count":5,"is_preprint":false},{"pmid":"37939252","id":"PMC_37939252","title":"Expression of ZNF281 in colorectal cancer correlates with response to radiotherapy and survival.","date":"2023","source":"Annals of medicine","url":"https://pubmed.ncbi.nlm.nih.gov/37939252","citation_count":4,"is_preprint":false},{"pmid":"39724734","id":"PMC_39724734","title":"Inhibition of ZFP281/ZNF281-RIPK1/RIPK3/MLKL signaling in hepatocytes by pterostilbene relieves hepatic lipometabolic disorder and inflammation in non-alcoholic steatohepatitis.","date":"2024","source":"International immunopharmacology","url":"https://pubmed.ncbi.nlm.nih.gov/39724734","citation_count":4,"is_preprint":false},{"pmid":"39254179","id":"PMC_39254179","title":"Comparative single-cell transcriptomic analysis across tissues of aging primates reveals specific autologous activation of ZNF281 to mitigate oxidative stress in cornea.","date":"2024","source":"Aging cell","url":"https://pubmed.ncbi.nlm.nih.gov/39254179","citation_count":4,"is_preprint":false},{"pmid":"34056009","id":"PMC_34056009","title":"Upregulation of lnc-ZNF281 Inhibits the Progression of Glioma via the AKT/GSK-3β/β-Catenin Signaling Pathway.","date":"2021","source":"Journal of immunology research","url":"https://pubmed.ncbi.nlm.nih.gov/34056009","citation_count":2,"is_preprint":false},{"pmid":"39518154","id":"PMC_39518154","title":"ZNF281 Facilitates the Invasion of Cervical Cancer Cell Both In Vivo and In Vitro †.","date":"2024","source":"Cancers","url":"https://pubmed.ncbi.nlm.nih.gov/39518154","citation_count":1,"is_preprint":false},{"pmid":"41216437","id":"PMC_41216437","title":"Gene and metabolite changes triggered by downregulation of JUNB and ZNF281 in idiopathic pulmonary arterial hypertension: potential mechanisms revealed by multi-omics study.","date":"2025","source":"Translational pediatrics","url":"https://pubmed.ncbi.nlm.nih.gov/41216437","citation_count":0,"is_preprint":false},{"pmid":"40072551","id":"PMC_40072551","title":"Long noncoding RNA MATN1-AS1 contributes to oxaliplatin resistance of gastric cancer cells through miR-518b/ZNF281 axis.","date":"2025","source":"Naunyn-Schmiedeberg's archives of pharmacology","url":"https://pubmed.ncbi.nlm.nih.gov/40072551","citation_count":0,"is_preprint":false},{"pmid":"41536077","id":"PMC_41536077","title":"The Zinc Finger Protein Znf281 Is Essential for the Formation of Neural Tissue in Xenopus Embryos.","date":"2026","source":"Development, growth & differentiation","url":"https://pubmed.ncbi.nlm.nih.gov/41536077","citation_count":0,"is_preprint":false},{"pmid":"41984928","id":"PMC_41984928","title":"Selective translation of ZNF281 as part of the integrated stress response system has therapeutic relevance for cardio-oncology.","date":"2026","source":"Science translational medicine","url":"https://pubmed.ncbi.nlm.nih.gov/41984928","citation_count":0,"is_preprint":false}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":21972,"output_tokens":5182,"usd":0.071823,"stage1_stop_reason":"end_turn"},"stage2":{"model":"claude-opus-4-8","input_tokens":13544,"output_tokens":4223,"usd":0.086648,"stage2_stop_reason":"end_turn"},"total_usd":0.158471,"stage1_batch_id":"msgbatch_01UT1AahFPCAyn2uVweS7A9z","stage2_batch_id":"msgbatch_01HuKWtKNT4Pqj1bc8eEP5RV","note":"batch pricing = 50% of standard"},"stage1_raw":"```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 2013,\n      \"finding\": \"ZNF281 is directly transcriptionally induced by SNAIL (EMT transcription factor) and directly repressed by miR-34a/b/c, forming a coherent feed-forward loop. ZNF281 in turn directly activates SNAIL transcription, and ectopic ZNF281 induces EMT, increases migration/invasion, β-catenin activity, stemness markers LGR5/CD133, and sphere formation. Knockdown causes MET and inhibits lung metastases in mice. c-MYC induces ZNF281 protein in a SNAIL-dependent manner, and ZNF281 inactivation prevented EMT induced by c-MYC or SNAIL.\",\n      \"method\": \"ChIP, luciferase reporter assays, miR-34a target validation, siRNA knockdown, ectopic expression in CRC cells, xenograft metastasis model\",\n      \"journal\": \"The EMBO journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — reciprocal transcriptional regulation validated by ChIP + luciferase + multiple functional assays including in vivo metastasis, single rigorous study with multiple orthogonal methods\",\n      \"pmids\": [\"24185900\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"ZNF281 physically interacts with the pluripotency transcription factors NANOG, OCT4, SOX2, and c-MYC, implicating it in regulation of stemness and pluripotency networks.\",\n      \"method\": \"Co-immunoprecipitation (reported in review citing original interaction data)\",\n      \"journal\": \"Journal of molecular medicine (Berlin, Germany)\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — interaction cited in review with reference to experimental data; no full experimental detail in this abstract\",\n      \"pmids\": [\"24838609\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"ZNF281 transcriptionally activates XRCC2 (homologous recombination) and XRCC4 (NHEJ) through direct DNA-binding at their promoters. Cells silenced for ZNF281 show delayed DNA repair after etoposide treatment. c-MYC also binds the same promoters but cannot activate transcription or modify ZNF281 activity.\",\n      \"method\": \"Chromatin immunoprecipitation (ChIP), luciferase reporter assays, comet assay, siRNA knockdown\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP + luciferase + functional comet assay, multiple orthogonal methods in single study establishing direct transcriptional regulation\",\n      \"pmids\": [\"26300006\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"ZNF281 promotes pancreatic cancer cell proliferation and invasion by directly binding β-catenin and decreasing its polyubiquitination, thereby activating Wnt/β-catenin signaling and downstream gene expression.\",\n      \"method\": \"Co-immunoprecipitation, Topflash luciferase assay, ectopic expression and knockdown, Western blot\",\n      \"journal\": \"Digestive diseases and sciences\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Weak — single Co-IP with functional Topflash assay, single lab, single study\",\n      \"pmids\": [\"28523575\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"GSK-3β (not GSK-3α) phosphorylates ZNF281 at a consensus TSGEHS motif (S638), promoting interaction of ZNF281 with β-TrCP2 (not β-TrCP1), leading to ZNF281 ubiquitination and proteasomal degradation. A ZNF281-S638A mutant is resistant to this degradation. ZNF281 also transcriptionally represses β-TrCP2, forming a negative feedback loop.\",\n      \"method\": \"Mutational analysis (S638A), co-immunoprecipitation, ubiquitination assay, Western blot, CRC cell lines\",\n      \"journal\": \"Oncotarget\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — phosphorylation site mutagenesis + Co-IP + ubiquitination assay in single lab study\",\n      \"pmids\": [\"29179460\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"ZNF281 is rapidly recruited to DNA double-strand break sites (within seconds of damage) via a mechanism dependent on its DNA-binding domain and, at least in part, PARP activity. ZNF281 physically binds XRCC4 through its zinc-finger domain and facilitates XRCC4 recruitment to damage sites. Depletion of ZNF281 impairs NHEJ efficiency and decreases cell viability after DNA damage.\",\n      \"method\": \"Live-cell imaging of recruitment kinetics, PARP inhibitor treatment, Co-immunoprecipitation (ZNF281-XRCC4), siRNA depletion with NHEJ reporter assay\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — live imaging + Co-IP + functional NHEJ assay + domain mutagenesis, multiple orthogonal methods in single rigorous study\",\n      \"pmids\": [\"31570788\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"ZNF281 (Zfp281) physically associates with the master erythroid transcription factor GATA1, co-occupies many chromatin sites with GATA1 and Zfp148, and regulates a common set of erythroid differentiation genes. Combined deficiency of Zfp148 and Zfp281 causes a marked erythroid maturation block, demonstrating functional redundancy.\",\n      \"method\": \"Co-immunoprecipitation (Zfp281-GATA1), ChIP-seq, conditional knockout mice, genetic epistasis (double knockout)\",\n      \"journal\": \"Blood advances\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — Co-IP + ChIP-seq + genetic epistasis in vivo, multiple orthogonal methods establishing both physical interaction and functional role\",\n      \"pmids\": [\"31455666\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"ZNF281 knockdown in CRC cells suppresses cell proliferation, migration, and invasion by inhibiting the Wnt/β-catenin pathway.\",\n      \"method\": \"siRNA knockdown, Transwell assay, wound healing assay, Western blot\",\n      \"journal\": \"Cellular physiology and biochemistry\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — single lab, pathway placement by Western blot only, no direct binding or reporter assay\",\n      \"pmids\": [\"31112017\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"ZNF281/Zfp281 is down-regulated during epithelial, muscle, and granulocytic differentiation. ZNF281 inhibits muscle differentiation promoted by miR-1, and is a direct post-transcriptional target of miR-1 acting through the ZNF281 3'UTR.\",\n      \"method\": \"3'UTR luciferase reporter assays for miR binding sites, differentiation assays, expression analysis in rhabdomyosarcoma/leiomyosarcoma\",\n      \"journal\": \"Molecular oncology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — functional 3'UTR luciferase validation + differentiation assays, multiple methods in single lab study\",\n      \"pmids\": [\"31782884\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"ZNF281 transactivates the EMT-related transcription factors ZEB1 and Snail. Both ZEB1 and Snail can transcriptionally suppress miR-543 expression, while miR-543 directly targets ZNF281, establishing a ZNF281-miR-543 feedback loop that regulates TGF-β-induced breast cancer metastasis.\",\n      \"method\": \"Luciferase reporter assay, ChIP, miR-543 target validation, in vitro and in vivo metastasis assays\",\n      \"journal\": \"Molecular therapy. Nucleic acids\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP + luciferase for direct transactivation + in vivo metastasis validation, single lab\",\n      \"pmids\": [\"32512343\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"ZNF281 binds the promoter region of β-CATENIN and transcriptionally regulates its expression. ZNF281 knockdown in human multipotent stem cells (hMSCs) leads to spontaneous osteochondrogenic differentiation in vivo and in vitro, while overexpression accelerates proliferation. β-CATENIN expression correlates with ZNF281 expression.\",\n      \"method\": \"ChIP assay, siRNA knockdown, overexpression, in vivo subcutaneous implantation with β-TCP scaffold\",\n      \"journal\": \"Cell transplantation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP + in vivo functional assay + gain/loss of function, single lab\",\n      \"pmids\": [\"22963690\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"ZNF281 directly binds the 5'-GGCGGCGGGCGG-3' motif in the HK2 promoter and transcriptionally represses HK2 expression, thereby suppressing HK2-PINK1/Parkin signaling-mediated mitophagy and driving hepatocyte senescence in alcoholic liver disease. Knockdown of ZNF281 (including by AAV-shRNA in vivo) rescues mitophagy and reduces senescence.\",\n      \"method\": \"ChIP assay, promoter binding motif identification, siRNA knockdown, AAV-shRNA in vivo knockdown, mitophagy/senescence assays\",\n      \"journal\": \"Cell proliferation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP showing direct promoter binding + in vivo AAV rescue, single lab, multiple orthogonal methods\",\n      \"pmids\": [\"36514923\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"SUFU binds ZNF281 and masks its nuclear localization signal (NLS), causing cytoplasmic retention of ZNF281, thereby suppressing ZNF281-induced tumor cell migration and DNA damage repair. SUFU also hampers interactions between ZNF281 and promoters of target genes. This defines a Hedgehog-independent anti-tumor role for SUFU.\",\n      \"method\": \"Co-immunoprecipitation, subcellular fractionation/localization assays, in vivo tumor cell migration model, ChIP (promoter binding inhibition)\",\n      \"journal\": \"Cell death and differentiation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP + localization assay + functional in vivo model, single lab with multiple orthogonal methods\",\n      \"pmids\": [\"36220888\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"ZNF281 is required for colon fibroblast activation and myofibroblast differentiation in response to TGFβ1. ZNF281 knockdown in fibroblasts reduces expression of genes involved in extracellular matrix composition, remodeling, and cell contraction, as identified by RNA-sequencing.\",\n      \"method\": \"siRNA knockdown, RNA-sequencing, TGFβ1 stimulation assay, DSS colitis mouse model\",\n      \"journal\": \"International journal of molecular sciences\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — RNA-seq transcriptomics + in vivo mouse model + siRNA, single lab\",\n      \"pmids\": [\"36142169\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"ZNF281 suppresses transcription of TFAM, NRF1, and PGC-1α (mitochondrial biogenesis regulators), and physically interacts with NRF1 and PGC-1α. ZNF281 is recruited to the promoter regions of TFAM, TFB1M, and TFB2M to repress their expression. Knockdown of ZNF281 increases mitochondrial content, OCR, and TCA cycle intermediates, and knockdown of TFAM reverses these effects. This suppression of mitochondrial biogenesis facilitates HCC invasion and metastasis.\",\n      \"method\": \"Co-immunoprecipitation (ZNF281-NRF1, ZNF281-PGC-1α), ChIP, siRNA knockdown, OCR measurement, RNA-seq, xenograft metastasis model\",\n      \"journal\": \"Cell death discovery\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP + ChIP + functional rescue experiment (TFAM KD reversal) + in vivo metastasis, multiple orthogonal methods in single rigorous study\",\n      \"pmids\": [\"37880213\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"ZNF281 interacts with the ANXA10 promoter at ZNF281 recognition sites and recruits components of the NuRD complex (including HDAC1 and MTA1) to transcriptionally repress tumor suppressor ANXA10. Knockdown of HDAC1 or MTA1 releases ANXA10 from repression and reverses EMT, invasion, and metastasis driven by ZNF281.\",\n      \"method\": \"ChIP, Co-immunoprecipitation (ZNF281-NuRD components), RNA-seq (target identification), siRNA knockdown of HDAC1/MTA1, in vivo pulmonary metastasis model\",\n      \"journal\": \"Journal of hepatocellular carcinoma\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP + Co-IP + RNA-seq + in vivo rescue, multiple orthogonal methods in a single rigorous study\",\n      \"pmids\": [\"37041757\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"ZNF281 upregulates the RIPK1/RIPK3/MLKL necroptosis signaling axis in hepatocytes under free fatty acid stress, promoting lipid accumulation and inflammatory cell death in NASH. Hepatocyte-specific Zfp281 knockout prevents NASH diet-induced liver injury, steatosis, inflammation, and fibrosis. Pterostilbene was identified as a ZNF281 inhibitor that recapitulates these protective effects.\",\n      \"method\": \"Hepatocyte-specific conditional knockout mice (AAV-shRNA), Western blot for RIPK1/RIPK3/MLKL, in vivo NASH diet model, pharmacological inhibition with pterostilbene\",\n      \"journal\": \"International immunopharmacology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — cell-type specific in vivo KO with mechanistic pathway identification, single lab\",\n      \"pmids\": [\"39724734\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"ZNF281 forms a positive feedback loop with FOXO3 to sense elevated ROS levels, potentially regulating mitochondrial respiratory chain components and superoxide dismutase (SOD) expression in corneal cells during aging. Overexpression of ZNF281 in MSCs prevented cellular senescence.\",\n      \"method\": \"Single-cell transcriptomics (comparative nonhuman primate), ZNF281 overexpression in MSCs, ROS/senescence assays\",\n      \"journal\": \"Aging cell\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — single-cell transcriptomics-driven discovery with limited functional validation, single lab, limited mechanistic detail in abstract\",\n      \"pmids\": [\"39254179\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2026,\n      \"finding\": \"Anticancer agents (intercalating/alkylating agents, tyrosine kinase inhibitors, receptor inhibitors) converge to increase selective translational upregulation of ZNF281 in cardiomyocytes as part of the integrated stress response. Cardiomyocyte-specific ZNF281-deficient mice are resistant to anthracycline-induced cardiotoxicity, while cardiomyocyte-specific ZNF281-overexpressing mice develop cardiotoxicity features. A small-molecule inhibitor ZIM prevented anthracycline-induced cardiotoxicity and enhanced anti-tumor effects.\",\n      \"method\": \"Cardiomyocyte-specific conditional knockout and overexpression mice, anthracycline cardiotoxicity model, small-molecule inhibitor (ZIM), translational analysis, human myocardial tissue validation\",\n      \"journal\": \"Science translational medicine\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — cell-type specific KO and OE mouse models + pharmacological inhibition + human tissue validation, multiple orthogonal methods in single rigorous study\",\n      \"pmids\": [\"41984928\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2026,\n      \"finding\": \"Znf281 (Xenopus ortholog) overexpression reduces levels of phosphorylated Smad1/5/8 (downstream effectors of BMP signaling), thereby promoting neural tissue formation and inhibiting epidermal differentiation in ectodermal explants. Knockdown of Znf281 reduces expression of neural markers, establishing a required role in early neural development via modulation of BMP signaling.\",\n      \"method\": \"Xenopus embryo overexpression and morpholino knockdown, pSmad1/5/8 Western blot, neural/epidermal marker expression analysis\",\n      \"journal\": \"Development, growth & differentiation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — gain and loss of function in vivo with mechanistic pathway identification (BMP/Smad), single lab\",\n      \"pmids\": [\"41536077\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"ZNF281 is a Krüppel-type zinc-finger transcription factor that directly binds GC-rich promoter sequences to activate (SNAIL, XRCC2, XRCC4, stemness genes) or repress (β-TrCP2, HK2, TFAM/NRF1/PGC-1α, ANXA10) target gene transcription, often by recruiting co-repressor complexes such as NuRD; its activity and stability are regulated post-translationally by GSK-3β phosphorylation (at S638) and subsequent β-TrCP2-mediated ubiquitination/degradation, by SUFU-mediated cytoplasmic sequestration masking its NLS, and at the translational level via the integrated stress response in cardiomyocytes; it physically interacts with GATA1, NANOG, OCT4, SOX2, c-MYC, β-catenin, NRF1, PGC-1α, XRCC4, and SUFU, placing it at the intersection of EMT, DNA damage repair (NHEJ), stemness, mitochondrial biogenesis, and stress-response networks.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"ZNF281 is a Krüppel-type zinc-finger transcription factor that binds GC-rich promoter elements to govern epithelial-mesenchymal transition (EMT), stemness, DNA repair, and metabolic gene programs [#0, #2]. In the EMT axis it sits within a coherent feed-forward loop: it is induced by SNAIL and repressed by miR-34, then directly transactivates SNAIL (and ZEB1) to drive migration, invasion, stemness markers, and metastasis, with knockdown enforcing mesenchymal-to-epithelial reversion [#0, #9]. It promotes Wnt/β-catenin signaling both by binding the β-CATENIN promoter and by binding β-catenin protein to reduce its polyubiquitination [#3, #10]. ZNF281 acts as a positive regulator of DNA double-strand break repair, directly activating XRCC2 and XRCC4 transcription and being recruited to break sites within seconds in a DNA-binding-domain- and PARP-dependent manner, where it binds XRCC4 through its zinc fingers to facilitate non-homologous end joining [#2, #5]. As a transcriptional repressor it recruits the NuRD complex (HDAC1, MTA1) to silence the tumor suppressor ANXA10, and it suppresses mitochondrial biogenesis by repressing TFAM, NRF1, and PGC-1α while physically interacting with NRF1 and PGC-1α [#14, #15]. Its activity is constrained post-translationally: GSK-3β phosphorylates ZNF281 at S638 to trigger β-TrCP2-mediated ubiquitination and degradation (a loop reinforced by ZNF281 repression of β-TrCP2), and SUFU sequesters ZNF281 in the cytoplasm by masking its nuclear localization signal [#4, #12]. Beyond cancer, ZNF281 partners with GATA1 to control erythroid maturation [#6], and drives pathological tissue responses including hepatocyte senescence, NASH-associated necroptosis, and integrated-stress-response-driven cardiomyocyte toxicity [#11, #16, #18].\",\n  \"teleology\": [\n    {\n      \"year\": 2012,\n      \"claim\": \"Established a direct transcriptional link between ZNF281 and Wnt signaling and a role in stem cell fate, addressing how ZNF281 influences progenitor proliferation versus differentiation.\",\n      \"evidence\": \"ChIP at the β-CATENIN promoter plus gain/loss-of-function and in vivo scaffold implantation in human multipotent stem cells\",\n      \"pmids\": [\"22963690\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether ZNF281 activates or represses β-CATENIN under different contexts not resolved\", \"Single lab; co-regulators at the promoter unknown\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Defined ZNF281 as a core node of an EMT feed-forward loop, answering how it is wired into the SNAIL/miR-34 circuit and whether it drives metastasis.\",\n      \"evidence\": \"ChIP, luciferase reporters, miR-34 target validation, ectopic/knockdown studies and xenograft metastasis in colorectal cancer cells\",\n      \"pmids\": [\"24185900\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct co-repressor/co-activator partners at the SNAIL promoter not defined\", \"Did not address post-translational control of ZNF281\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Placed ZNF281 within the pluripotency network by identifying its physical association with core stemness factors.\",\n      \"evidence\": \"Co-immunoprecipitation reported via review citing original interaction data\",\n      \"pmids\": [\"24838609\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No full experimental detail in the cited abstract\", \"Functional consequence of each interaction not delineated\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Revealed an unexpected role in DNA repair by showing ZNF281 directly transactivates HR and NHEJ effector genes, distinguishing its activity from c-MYC at the same promoters.\",\n      \"evidence\": \"ChIP, luciferase reporters, comet assay and siRNA knockdown after etoposide\",\n      \"pmids\": [\"26300006\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Did not establish whether ZNF281 acts at break sites directly\", \"Mechanism distinguishing ZNF281 from c-MYC at shared promoters not explained\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Clarified how ZNF281 promotes Wnt signaling at the protein level and how it is degraded, defining both an activating interaction with β-catenin and a GSK-3β/β-TrCP2 turnover loop.\",\n      \"evidence\": \"Co-IP, Topflash reporters, S638A mutagenesis and ubiquitination assays in pancreatic and colorectal cancer cells\",\n      \"pmids\": [\"28523575\", \"29179460\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Single Co-IP for β-catenin without reciprocal structural validation\", \"Whether GSK-3β-driven degradation operates across all ZNF281 functions not tested\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Demonstrated that ZNF281 is a bona fide DNA-damage response factor recruited to break sites and physically delivering XRCC4 to support NHEJ.\",\n      \"evidence\": \"Live-cell imaging of recruitment kinetics, PARP inhibition, ZNF281-XRCC4 Co-IP, domain mutagenesis and NHEJ reporter assays\",\n      \"pmids\": [\"31570788\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Signal triggering second-scale recruitment beyond partial PARP dependence not fully defined\", \"Structural basis of the zinc-finger/XRCC4 interaction unknown\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Established a tissue-specific developmental role by showing ZNF281 partners with GATA1 and Zfp148 to control erythroid maturation.\",\n      \"evidence\": \"Co-IP, ChIP-seq co-occupancy and double-knockout genetic epistasis in mice\",\n      \"pmids\": [\"31455666\", \"31782884\", \"31112017\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether ZNF281 activates or represses erythroid targets directly not fully parsed\", \"Redundancy mechanism with Zfp148 at the molecular level unresolved\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Extended the EMT circuitry into breast cancer by adding ZEB1 transactivation and a miR-543 feedback loop downstream of TGF-β.\",\n      \"evidence\": \"ChIP, luciferase reporters, miR-543 target validation and in vitro/in vivo metastasis assays\",\n      \"pmids\": [\"32512343\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct versus indirect contribution of each loop arm to metastasis not separated\", \"Single lab\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Identified two distinct control mechanisms — repressive metabolic gene targeting and cytoplasmic sequestration by SUFU — expanding how ZNF281 output is set.\",\n      \"evidence\": \"ChIP at the HK2 promoter with AAV-shRNA rescue; Co-IP, subcellular fractionation and ChIP inhibition for SUFU; RNA-seq and DSS colitis model for fibroblast activation\",\n      \"pmids\": [\"36514923\", \"36220888\", \"36142169\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether SUFU regulation is constitutive or signal-dependent unknown\", \"Direct fibroblast target genes not individually validated\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Defined the repressive machinery ZNF281 uses, showing recruitment of the NuRD complex to silence ANXA10 and direct repression of mitochondrial biogenesis regulators.\",\n      \"evidence\": \"ChIP, Co-IP of ZNF281 with NuRD components and with NRF1/PGC-1α, RNA-seq, functional rescue (TFAM knockdown) and in vivo metastasis models\",\n      \"pmids\": [\"37041757\", \"37880213\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Determinants selecting activating versus NuRD-repressive mode at a given promoter unknown\", \"Stoichiometry of ZNF281 within NuRD not defined\"]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"Connected ZNF281 to pathological cell death and stress, implicating it in NASH necroptosis, cardiotoxicity via the integrated stress response, and ROS-sensing senescence control.\",\n      \"evidence\": \"Hepatocyte- and cardiomyocyte-specific KO/OE mice, RIPK1/RIPK3/MLKL Western blot, anthracycline and NASH models, small-molecule inhibitors, single-cell transcriptomics and MSC senescence assays\",\n      \"pmids\": [\"39724734\", \"41984928\", \"39254179\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct transcriptional targets driving necroptosis and cardiotoxicity not fully mapped\", \"FOXO3/ROS loop in corneal cells rests on limited functional validation\"]\n    },\n    {\n      \"year\": 2026,\n      \"claim\": \"Established a developmental neural patterning role for the ortholog by linking ZNF281 to BMP/Smad signaling modulation.\",\n      \"evidence\": \"Xenopus overexpression and morpholino knockdown with pSmad1/5/8 Western blot and neural/epidermal marker analysis\",\n      \"pmids\": [\"41536077\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether ZNF281 acts directly on BMP pathway genes or indirectly not resolved\", \"Mammalian relevance of the neural role untested\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How ZNF281 switches between transcriptional activation and NuRD-mediated repression at different promoters, and what upstream signals determine its context-specific output, remains unresolved.\",\n      \"evidence\": \"No single study reconciles its dual activator/repressor behavior across tissues\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No structural model of DNA or partner binding\", \"Promoter-context determinants of activation versus repression unknown\", \"Integration of phosphorylation, SUFU sequestration, and translational control into a unified regulatory logic not established\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [0, 2, 14, 15]},\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [2, 5, 11, 15]},\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [11]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [12]},\n      {\"term_id\": \"GO:0005829\", \"supporting_discovery_ids\": [12]},\n      {\"term_id\": \"GO:0000228\", \"supporting_discovery_ids\": [5]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-73894\", \"supporting_discovery_ids\": [2, 5]},\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [0, 14, 15]},\n      {\"term_id\": \"R-HSA-162582\", \"supporting_discovery_ids\": [3, 10]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [6, 19]}\n    ],\n    \"complexes\": [\"NuRD complex\"],\n    \"partners\": [\"XRCC4\", \"GATA1\", \"NRF1\", \"PPARGC1A\", \"SUFU\", \"CTNNB1\", \"BTRC\", \"NANOG\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":6,"faith_total":7,"faith_pct":85.71428571428571}}