{"gene":"ZNF471","run_date":"2026-04-28T23:00:24","timeline":{"discoveries":[{"year":2018,"finding":"ZNF471 directly binds to the promoters of TFAP2A and PLS3 and transcriptionally represses their expression; it recruits KAP1 (co-repressor) to these promoters, inducing H3K9me3 enrichment and heterochromatization, thereby inhibiting oncogenic TFAP2A and PLS3 in gastric cancer.","method":"ChIP-PCR, ectopic expression, bioinformatics modeling, Western blot","journal":"Oncogene","confidence":"High","confidence_rationale":"Tier 1–2 — ChIP-PCR directly demonstrates promoter binding and H3K9me3 enrichment; KAP1 recruitment validated; multiple orthogonal methods in one study","pmids":["29610526"],"is_preprint":false},{"year":2020,"finding":"ZNF471 directly binds to the MAPK10/JNK3 promoter, activating MAPK10/JNK3 expression and downstream signaling, as well as activating PCDH family gene expression, in esophageal squamous cell carcinoma cells.","method":"ChIP assay, ectopic expression, RT-PCR, in vitro and in vivo functional assays","journal":"Theranostics","confidence":"High","confidence_rationale":"Tier 2 — direct promoter binding demonstrated by ChIP, functional rescue experiments in vitro and in vivo","pmids":["32089740"],"is_preprint":false},{"year":2020,"finding":"ZNF471 suppresses AKT and Wnt/β-catenin signaling in breast cancer cells, inhibiting epithelial-mesenchymal transition and tumor cell stemness, as demonstrated by ectopic expression and knockdown experiments.","method":"Western blot, CCK-8, clonogenicity, wound healing, Transwell, flow cytometry, nude mice tumorigenicity, BrdU-ELISA, immunohistochemistry","journal":"Clinical epigenetics","confidence":"Medium","confidence_rationale":"Tier 2 — clean KO/KD with defined cellular phenotype and pathway readout; single lab, no direct binding assay for AKT/Wnt components","pmids":["33203470"],"is_preprint":false},{"year":2024,"finding":"ZNF471 physically interacts with BANP and inactivates the PI3K/AKT/mTOR signaling pathway in renal cell carcinoma, suppressing proliferation, migration, cell cycle progression and promoting apoptosis.","method":"Co-immunoprecipitation (interaction with BANP), transcriptome sequencing, bioinformatics, cell biology assays, Western blot","journal":"International journal of biological sciences","confidence":"Medium","confidence_rationale":"Tier 2–3 — protein-protein interaction with BANP shown; pathway inactivation demonstrated by molecular biology experiments; single lab","pmids":["38169650"],"is_preprint":false},{"year":2024,"finding":"N-glycosylation of ZNF471 at asparagine 358 reduces protein stability and impairs nuclear translocation; suppression of this N-glycosylation enhances ZNF471 protein stability and promotes its translocation to the nucleus, where it binds the c-Myc promoter and suppresses c-Myc expression in tongue squamous cell carcinoma.","method":"Site-specific mutagenesis, Western blot, ChIP (promoter binding), immunohistochemistry, overexpression assays, bioinformatics","journal":"The American journal of pathology","confidence":"High","confidence_rationale":"Tier 1–2 — mutagenesis identifies specific N-glycosylation site (N358), ChIP demonstrates direct promoter binding to c-Myc, nuclear translocation and protein stability changes validated by orthogonal methods","pmids":["38749608"],"is_preprint":false},{"year":2020,"finding":"LIFR-AS1 acts as a competing endogenous RNA (ceRNA) that sponges miR-942-5p, thereby relieving miR-942-5p-mediated repression of ZNF471; ZNF471 depletion rescues LIFR-AS1-mediated suppression of NSCLC cell migration and invasion, placing ZNF471 downstream of the LIFR-AS1/miR-942-5p axis.","method":"Luciferase reporter (sponge validation), overexpression, siRNA knockdown, Transwell invasion assay, in vivo metastasis assay, rescue experiments","journal":"Cancer cell international","confidence":"Medium","confidence_rationale":"Tier 2–3 — genetic epistasis (rescue experiments) places ZNF471 as functional downstream effector; miRNA sponge mechanism biochemically validated; single lab","pmids":["32489316"],"is_preprint":false},{"year":2025,"finding":"ZNF471 overexpression reduces protein levels of β-catenin, c-Myc, and MMP-7 in nasopharyngeal carcinoma cells, inhibiting cell growth, migration, invasion, and stemness through suppression of the Wnt/β-catenin pathway.","method":"Western blot, CCK-8, EdU assay, wound healing, Transwell, spheroid formation assay, plasmid overexpression","journal":"General physiology and biophysics","confidence":"Low","confidence_rationale":"Tier 3 — single lab, single approach with no direct binding assay; pathway assignment based on downstream protein levels only","pmids":["40326975"],"is_preprint":false},{"year":2021,"finding":"KRAB-ZFPs including ZNF471 recruit a repressive complex through the KRAB domain that mediates histone deacetylation, H3K9me3 trimethylation, and subsequent heterochromatization; KRAB domain binds KAP1/TRIM28 as the primary co-repressor.","method":"Review synthesizing biochemical and structural studies of the KRAB-ZFP class","journal":"International journal of molecular sciences","confidence":"Medium","confidence_rationale":"Tier 2 — class-level mechanism well-established; corroborated specifically for ZNF471 by ChIP data in PMID 29610526","pmids":["33672287"],"is_preprint":false}],"current_model":"ZNF471 is a KRAB-domain zinc finger transcriptional regulator that binds specific gene promoters (TFAP2A, PLS3, MAPK10/JNK3, c-Myc) to either repress or activate transcription; it recruits KAP1 to drive H3K9me3-mediated silencing of oncogenes, physically interacts with BANP to suppress PI3K/AKT/mTOR signaling, and its activity is regulated post-translationally by N-glycosylation at Asn358, which controls protein stability and nuclear translocation; upstream, ZNF471 is targeted by miR-942-5p, whose activity is in turn modulated by the lncRNA LIFR-AS1."},"narrative":{"teleology":[{"year":2018,"claim":"Establishing that ZNF471 is a direct transcriptional repressor that silences specific oncogene promoters via KAP1 recruitment and H3K9me3 deposition answered the fundamental question of how this KRAB-ZFP exerts tumor-suppressive function at the chromatin level.","evidence":"ChIP-PCR showing ZNF471 binding to TFAP2A and PLS3 promoters with KAP1 co-occupancy and H3K9me3 enrichment in gastric cancer cells","pmids":["29610526"],"confidence":"High","gaps":["Genome-wide binding profile not determined; additional target promoters likely exist","Whether ZNF471-KAP1 complex recruits SETDB1 or another H3K9 methyltransferase not tested","Mechanism distinguishing repressed versus activated targets unknown"]},{"year":2020,"claim":"Demonstrating that ZNF471 can also activate transcription—by directly binding and upregulating the MAPK10/JNK3 promoter—revealed dual transcriptional activity beyond simple KRAB-mediated repression.","evidence":"ChIP assay and ectopic expression in esophageal squamous cell carcinoma cells with in vivo validation","pmids":["32089740"],"confidence":"High","gaps":["Cofactors enabling transcriptional activation at MAPK10 versus repression at TFAP2A not identified","Whether PCDH family genes are direct or indirect targets not resolved by ChIP"]},{"year":2020,"claim":"Showing that ZNF471 suppresses AKT and Wnt/β-catenin signaling in breast cancer extended its tumor-suppressive role beyond direct promoter targets to broader signaling pathway modulation, while the identification of ZNF471 as a downstream effector of the LIFR-AS1/miR-942-5p ceRNA axis in NSCLC established an upstream regulatory mechanism.","evidence":"Ectopic expression and knockdown with pathway readouts in breast cancer; luciferase reporter and rescue experiments in NSCLC","pmids":["33203470","32489316"],"confidence":"Medium","gaps":["Direct binding to AKT or Wnt pathway gene promoters not demonstrated","Whether miR-942-5p regulation of ZNF471 operates across cancer types not tested","Endogenous stoichiometry of ceRNA sponge mechanism not validated"]},{"year":2024,"claim":"Identifying BANP as a physical interaction partner of ZNF471 that cooperates to inactivate PI3K/AKT/mTOR signaling provided the first non-KAP1 protein partner and a candidate mechanism for pathway suppression in renal cell carcinoma.","evidence":"Co-immunoprecipitation of ZNF471-BANP complex, transcriptome sequencing, and functional assays in renal cell carcinoma","pmids":["38169650"],"confidence":"Medium","gaps":["Reciprocal Co-IP and domain mapping of the ZNF471-BANP interface not reported","Whether BANP interaction is direct or bridged by other factors not resolved","Mechanism by which ZNF471-BANP complex inhibits PI3K/AKT/mTOR not defined"]},{"year":2024,"claim":"Demonstrating that N-glycosylation at Asn358 destabilizes ZNF471 and blocks its nuclear translocation revealed a post-translational switch controlling ZNF471 function, linking glycosylation status to c-Myc repression.","evidence":"Site-directed mutagenesis of N358, ChIP for c-Myc promoter binding, and protein stability/localization assays in tongue squamous cell carcinoma","pmids":["38749608"],"confidence":"High","gaps":["The glycosyltransferase responsible for Asn358 modification not identified","Whether N-glycosylation regulation applies to other ZNF471 target genes not tested","Structural basis for how glycosylation affects nuclear import unclear"]},{"year":null,"claim":"The genome-wide direct target repertoire of ZNF471, the structural basis for its dual activator/repressor function, and the identity of the glycosyltransferase modifying Asn358 remain unresolved.","evidence":"","pmids":[],"confidence":"Low","gaps":["No ChIP-seq or CUT&RUN data available for genome-wide binding","Structural determinants of context-dependent activation versus repression unknown","In vivo genetic models (knockout mice) not reported"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[0,1,4]},{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[0,1,4]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[0,1,4]}],"pathway":[{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[0,1,4]},{"term_id":"R-HSA-162582","term_label":"Signal Transduction","supporting_discovery_ids":[2,3]},{"term_id":"R-HSA-74160","term_label":"Gene expression (Transcription)","supporting_discovery_ids":[0,1,4]},{"term_id":"R-HSA-4839726","term_label":"Chromatin organization","supporting_discovery_ids":[0,7]}],"complexes":[],"partners":["KAP1","BANP"],"other_free_text":[]},"mechanistic_narrative":"ZNF471 is a KRAB-domain zinc finger transcriptional regulator that functions as a tumor suppressor by directly binding gene promoters to either repress or activate transcription in a context-dependent manner. It recruits the co-repressor KAP1/TRIM28 to the promoters of oncogenes such as TFAP2A, PLS3, and c-Myc, inducing H3K9me3-mediated heterochromatization and transcriptional silencing [PMID:29610526, PMID:38749608], while at other loci it activates expression, as demonstrated by direct binding to and upregulation of the MAPK10/JNK3 promoter [PMID:32089740]. ZNF471 suppresses multiple oncogenic signaling cascades—including AKT, Wnt/β-catenin, and PI3K/AKT/mTOR—through mechanisms that include physical interaction with BANP [PMID:33203470, PMID:38169650]. Its nuclear function is regulated post-translationally by N-glycosylation at Asn358, which reduces protein stability and impairs nuclear translocation, thereby attenuating its transcriptional repression of c-Myc [PMID:38749608]."},"prefetch_data":{"uniprot":{"accession":"Q9BX82","full_name":"Zinc finger protein 471","aliases":["EZFIT-related protein 1"],"length_aa":626,"mass_kda":73.0,"function":"May be involved in transcriptional regulation","subcellular_location":"Nucleus","url":"https://www.uniprot.org/uniprotkb/Q9BX82/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/ZNF471","classification":"Not Classified","n_dependent_lines":0,"n_total_lines":1208,"dependency_fraction":0.0},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/ZNF471","total_profiled":1310},"omim":[{"mim_id":"620162","title":"ZINC FINGER PROTEIN 471; ZNF471","url":"https://www.omim.org/entry/620162"},{"mim_id":"609451","title":"ZFP90 ZINC FINGER PROTEIN; ZFP90","url":"https://www.omim.org/entry/609451"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Supported","locations":[{"location":"Nucleoplasm","reliability":"Supported"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in all","driving_tissues":[],"url":"https://www.proteinatlas.org/search/ZNF471"},"hgnc":{"alias_symbol":["KIAA1396","Z1971","Zfp78"],"prev_symbol":[]},"alphafold":{"accession":"Q9BX82","domains":[{"cath_id":"-","chopping":"15-67","consensus_level":"high","plddt":79.1913,"start":15,"end":67},{"cath_id":"3.30.160.60","chopping":"514-621","consensus_level":"medium","plddt":87.3196,"start":514,"end":621}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9BX82","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q9BX82-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q9BX82-F1-predicted_aligned_error_v6.png","plddt_mean":72.81},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=ZNF471","jax_strain_url":"https://www.jax.org/strain/search?query=ZNF471"},"sequence":{"accession":"Q9BX82","fasta_url":"https://rest.uniprot.org/uniprotkb/Q9BX82.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q9BX82/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9BX82"}},"corpus_meta":[{"pmid":"33672287","id":"PMC_33672287","title":"KRAB-ZFP Transcriptional Regulators Acting as Oncogenes and Tumor Suppressors: An Overview.","date":"2021","source":"International journal of molecular sciences","url":"https://pubmed.ncbi.nlm.nih.gov/33672287","citation_count":67,"is_preprint":false},{"pmid":"32089740","id":"PMC_32089740","title":"19q13 KRAB zinc-finger protein ZNF471 activates MAPK10/JNK3 signaling but is frequently silenced by promoter CpG methylation in esophageal cancer.","date":"2020","source":"Theranostics","url":"https://pubmed.ncbi.nlm.nih.gov/32089740","citation_count":48,"is_preprint":false},{"pmid":"29610526","id":"PMC_29610526","title":"Zinc-finger protein 471 suppresses gastric cancer through transcriptionally repressing downstream oncogenic PLS3 and TFAP2A.","date":"2018","source":"Oncogene","url":"https://pubmed.ncbi.nlm.nih.gov/29610526","citation_count":48,"is_preprint":false},{"pmid":"32489316","id":"PMC_32489316","title":"lncRNA LIFR-AS1 suppresses invasion and metastasis of non-small cell lung cancer via the miR-942-5p/ZNF471 axis.","date":"2020","source":"Cancer cell international","url":"https://pubmed.ncbi.nlm.nih.gov/32489316","citation_count":43,"is_preprint":false},{"pmid":"33203470","id":"PMC_33203470","title":"The tumor suppressor Zinc finger protein 471 suppresses breast cancer growth and metastasis through inhibiting AKT and Wnt/β-catenin signaling.","date":"2020","source":"Clinical epigenetics","url":"https://pubmed.ncbi.nlm.nih.gov/33203470","citation_count":28,"is_preprint":false},{"pmid":"28255813","id":"PMC_28255813","title":"Gene promoter-associated CpG island hypermethylation in squamous cell carcinoma of the tongue.","date":"2017","source":"Virchows Archiv : an international journal of pathology","url":"https://pubmed.ncbi.nlm.nih.gov/28255813","citation_count":26,"is_preprint":false},{"pmid":"34944472","id":"PMC_34944472","title":"Epigenome-Wide Association Study of Prostate Cancer in African Americans Identifies DNA Methylation Biomarkers for Aggressive Disease.","date":"2021","source":"Biomolecules","url":"https://pubmed.ncbi.nlm.nih.gov/34944472","citation_count":12,"is_preprint":false},{"pmid":"38169650","id":"PMC_38169650","title":"ZNF471 Interacts with BANP to Reduce Tumour Malignancy by Inactivating PI3K/AKT/mTOR Signalling but is Frequently Silenced by Aberrant Promoter Methylation in Renal Cell Carcinoma.","date":"2024","source":"International journal of biological sciences","url":"https://pubmed.ncbi.nlm.nih.gov/38169650","citation_count":9,"is_preprint":false},{"pmid":"31098739","id":"PMC_31098739","title":"Colla corii asini might upregulate ZNF471 and THOC5 by KRAB domain-containing zinc-finger protein pathway and THO complex subunit 5 pathway to improve anemia of pregnant women with β-thalassemia.","date":"2019","source":"Annals of hematology","url":"https://pubmed.ncbi.nlm.nih.gov/31098739","citation_count":5,"is_preprint":false},{"pmid":"38749608","id":"PMC_38749608","title":"Suppression of N-Glycosylation of Zinc Finger Protein 471 Affects Proliferation, Invasion, and Docetaxel Sensitivity of Tongue Squamous Cell Carcinoma via Regulation of c-Myc.","date":"2024","source":"The American journal of pathology","url":"https://pubmed.ncbi.nlm.nih.gov/38749608","citation_count":5,"is_preprint":false},{"pmid":"36245370","id":"PMC_36245370","title":"Salivary DNA methylation markers for cancer of oral cavity.","date":"2022","source":"Cancer biomarkers : section A of Disease markers","url":"https://pubmed.ncbi.nlm.nih.gov/36245370","citation_count":5,"is_preprint":false},{"pmid":"37779184","id":"PMC_37779184","title":"Screening and identifying of biomarkers in early colorectal cancer and adenoma based on genome-wide methylation profiles.","date":"2023","source":"World journal of surgical oncology","url":"https://pubmed.ncbi.nlm.nih.gov/37779184","citation_count":4,"is_preprint":false},{"pmid":"40326975","id":"PMC_40326975","title":"ZNF471 inhibits nasopharyngeal carcinoma cell growth and stemness.","date":"2025","source":"General physiology and biophysics","url":"https://pubmed.ncbi.nlm.nih.gov/40326975","citation_count":1,"is_preprint":false}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":8737,"output_tokens":1981,"usd":0.027963},"stage2":{"model":"claude-opus-4-6","input_tokens":5272,"output_tokens":1905,"usd":0.110978},"total_usd":0.138941,"stage1_batch_id":"msgbatch_01BparvgRZ9S2LMidvaoo86K","stage2_batch_id":"msgbatch_01NkBfv9SVZWthhS7j6mU6G3","note":"batch pricing = 50% of standard"},"stage1_raw":"```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 2018,\n      \"finding\": \"ZNF471 directly binds to the promoters of TFAP2A and PLS3 and transcriptionally represses their expression; it recruits KAP1 (co-repressor) to these promoters, inducing H3K9me3 enrichment and heterochromatization, thereby inhibiting oncogenic TFAP2A and PLS3 in gastric cancer.\",\n      \"method\": \"ChIP-PCR, ectopic expression, bioinformatics modeling, Western blot\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1–2 — ChIP-PCR directly demonstrates promoter binding and H3K9me3 enrichment; KAP1 recruitment validated; multiple orthogonal methods in one study\",\n      \"pmids\": [\"29610526\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"ZNF471 directly binds to the MAPK10/JNK3 promoter, activating MAPK10/JNK3 expression and downstream signaling, as well as activating PCDH family gene expression, in esophageal squamous cell carcinoma cells.\",\n      \"method\": \"ChIP assay, ectopic expression, RT-PCR, in vitro and in vivo functional assays\",\n      \"journal\": \"Theranostics\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — direct promoter binding demonstrated by ChIP, functional rescue experiments in vitro and in vivo\",\n      \"pmids\": [\"32089740\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"ZNF471 suppresses AKT and Wnt/β-catenin signaling in breast cancer cells, inhibiting epithelial-mesenchymal transition and tumor cell stemness, as demonstrated by ectopic expression and knockdown experiments.\",\n      \"method\": \"Western blot, CCK-8, clonogenicity, wound healing, Transwell, flow cytometry, nude mice tumorigenicity, BrdU-ELISA, immunohistochemistry\",\n      \"journal\": \"Clinical epigenetics\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — clean KO/KD with defined cellular phenotype and pathway readout; single lab, no direct binding assay for AKT/Wnt components\",\n      \"pmids\": [\"33203470\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"ZNF471 physically interacts with BANP and inactivates the PI3K/AKT/mTOR signaling pathway in renal cell carcinoma, suppressing proliferation, migration, cell cycle progression and promoting apoptosis.\",\n      \"method\": \"Co-immunoprecipitation (interaction with BANP), transcriptome sequencing, bioinformatics, cell biology assays, Western blot\",\n      \"journal\": \"International journal of biological sciences\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2–3 — protein-protein interaction with BANP shown; pathway inactivation demonstrated by molecular biology experiments; single lab\",\n      \"pmids\": [\"38169650\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"N-glycosylation of ZNF471 at asparagine 358 reduces protein stability and impairs nuclear translocation; suppression of this N-glycosylation enhances ZNF471 protein stability and promotes its translocation to the nucleus, where it binds the c-Myc promoter and suppresses c-Myc expression in tongue squamous cell carcinoma.\",\n      \"method\": \"Site-specific mutagenesis, Western blot, ChIP (promoter binding), immunohistochemistry, overexpression assays, bioinformatics\",\n      \"journal\": \"The American journal of pathology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1–2 — mutagenesis identifies specific N-glycosylation site (N358), ChIP demonstrates direct promoter binding to c-Myc, nuclear translocation and protein stability changes validated by orthogonal methods\",\n      \"pmids\": [\"38749608\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"LIFR-AS1 acts as a competing endogenous RNA (ceRNA) that sponges miR-942-5p, thereby relieving miR-942-5p-mediated repression of ZNF471; ZNF471 depletion rescues LIFR-AS1-mediated suppression of NSCLC cell migration and invasion, placing ZNF471 downstream of the LIFR-AS1/miR-942-5p axis.\",\n      \"method\": \"Luciferase reporter (sponge validation), overexpression, siRNA knockdown, Transwell invasion assay, in vivo metastasis assay, rescue experiments\",\n      \"journal\": \"Cancer cell international\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2–3 — genetic epistasis (rescue experiments) places ZNF471 as functional downstream effector; miRNA sponge mechanism biochemically validated; single lab\",\n      \"pmids\": [\"32489316\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"ZNF471 overexpression reduces protein levels of β-catenin, c-Myc, and MMP-7 in nasopharyngeal carcinoma cells, inhibiting cell growth, migration, invasion, and stemness through suppression of the Wnt/β-catenin pathway.\",\n      \"method\": \"Western blot, CCK-8, EdU assay, wound healing, Transwell, spheroid formation assay, plasmid overexpression\",\n      \"journal\": \"General physiology and biophysics\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 — single lab, single approach with no direct binding assay; pathway assignment based on downstream protein levels only\",\n      \"pmids\": [\"40326975\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"KRAB-ZFPs including ZNF471 recruit a repressive complex through the KRAB domain that mediates histone deacetylation, H3K9me3 trimethylation, and subsequent heterochromatization; KRAB domain binds KAP1/TRIM28 as the primary co-repressor.\",\n      \"method\": \"Review synthesizing biochemical and structural studies of the KRAB-ZFP class\",\n      \"journal\": \"International journal of molecular sciences\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — class-level mechanism well-established; corroborated specifically for ZNF471 by ChIP data in PMID 29610526\",\n      \"pmids\": [\"33672287\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"ZNF471 is a KRAB-domain zinc finger transcriptional regulator that binds specific gene promoters (TFAP2A, PLS3, MAPK10/JNK3, c-Myc) to either repress or activate transcription; it recruits KAP1 to drive H3K9me3-mediated silencing of oncogenes, physically interacts with BANP to suppress PI3K/AKT/mTOR signaling, and its activity is regulated post-translationally by N-glycosylation at Asn358, which controls protein stability and nuclear translocation; upstream, ZNF471 is targeted by miR-942-5p, whose activity is in turn modulated by the lncRNA LIFR-AS1.\"\n}\n```","stage2_raw":"```json\n{\n  \"mechanistic_narrative\": \"ZNF471 is a KRAB-domain zinc finger transcriptional regulator that functions as a tumor suppressor by directly binding gene promoters to either repress or activate transcription in a context-dependent manner. It recruits the co-repressor KAP1/TRIM28 to the promoters of oncogenes such as TFAP2A, PLS3, and c-Myc, inducing H3K9me3-mediated heterochromatization and transcriptional silencing [PMID:29610526, PMID:38749608], while at other loci it activates expression, as demonstrated by direct binding to and upregulation of the MAPK10/JNK3 promoter [PMID:32089740]. ZNF471 suppresses multiple oncogenic signaling cascades—including AKT, Wnt/β-catenin, and PI3K/AKT/mTOR—through mechanisms that include physical interaction with BANP [PMID:33203470, PMID:38169650]. Its nuclear function is regulated post-translationally by N-glycosylation at Asn358, which reduces protein stability and impairs nuclear translocation, thereby attenuating its transcriptional repression of c-Myc [PMID:38749608].\",\n  \"teleology\": [\n    {\n      \"year\": 2018,\n      \"claim\": \"Establishing that ZNF471 is a direct transcriptional repressor that silences specific oncogene promoters via KAP1 recruitment and H3K9me3 deposition answered the fundamental question of how this KRAB-ZFP exerts tumor-suppressive function at the chromatin level.\",\n      \"evidence\": \"ChIP-PCR showing ZNF471 binding to TFAP2A and PLS3 promoters with KAP1 co-occupancy and H3K9me3 enrichment in gastric cancer cells\",\n      \"pmids\": [\"29610526\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\n        \"Genome-wide binding profile not determined; additional target promoters likely exist\",\n        \"Whether ZNF471-KAP1 complex recruits SETDB1 or another H3K9 methyltransferase not tested\",\n        \"Mechanism distinguishing repressed versus activated targets unknown\"\n      ]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Demonstrating that ZNF471 can also activate transcription—by directly binding and upregulating the MAPK10/JNK3 promoter—revealed dual transcriptional activity beyond simple KRAB-mediated repression.\",\n      \"evidence\": \"ChIP assay and ectopic expression in esophageal squamous cell carcinoma cells with in vivo validation\",\n      \"pmids\": [\"32089740\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\n        \"Cofactors enabling transcriptional activation at MAPK10 versus repression at TFAP2A not identified\",\n        \"Whether PCDH family genes are direct or indirect targets not resolved by ChIP\"\n      ]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Showing that ZNF471 suppresses AKT and Wnt/β-catenin signaling in breast cancer extended its tumor-suppressive role beyond direct promoter targets to broader signaling pathway modulation, while the identification of ZNF471 as a downstream effector of the LIFR-AS1/miR-942-5p ceRNA axis in NSCLC established an upstream regulatory mechanism.\",\n      \"evidence\": \"Ectopic expression and knockdown with pathway readouts in breast cancer; luciferase reporter and rescue experiments in NSCLC\",\n      \"pmids\": [\"33203470\", \"32489316\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Direct binding to AKT or Wnt pathway gene promoters not demonstrated\",\n        \"Whether miR-942-5p regulation of ZNF471 operates across cancer types not tested\",\n        \"Endogenous stoichiometry of ceRNA sponge mechanism not validated\"\n      ]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"Identifying BANP as a physical interaction partner of ZNF471 that cooperates to inactivate PI3K/AKT/mTOR signaling provided the first non-KAP1 protein partner and a candidate mechanism for pathway suppression in renal cell carcinoma.\",\n      \"evidence\": \"Co-immunoprecipitation of ZNF471-BANP complex, transcriptome sequencing, and functional assays in renal cell carcinoma\",\n      \"pmids\": [\"38169650\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\n        \"Reciprocal Co-IP and domain mapping of the ZNF471-BANP interface not reported\",\n        \"Whether BANP interaction is direct or bridged by other factors not resolved\",\n        \"Mechanism by which ZNF471-BANP complex inhibits PI3K/AKT/mTOR not defined\"\n      ]\n    },\n    {\n      \"year\": 2024,\n      \"claim\": \"Demonstrating that N-glycosylation at Asn358 destabilizes ZNF471 and blocks its nuclear translocation revealed a post-translational switch controlling ZNF471 function, linking glycosylation status to c-Myc repression.\",\n      \"evidence\": \"Site-directed mutagenesis of N358, ChIP for c-Myc promoter binding, and protein stability/localization assays in tongue squamous cell carcinoma\",\n      \"pmids\": [\"38749608\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\n        \"The glycosyltransferase responsible for Asn358 modification not identified\",\n        \"Whether N-glycosylation regulation applies to other ZNF471 target genes not tested\",\n        \"Structural basis for how glycosylation affects nuclear import unclear\"\n      ]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"The genome-wide direct target repertoire of ZNF471, the structural basis for its dual activator/repressor function, and the identity of the glycosyltransferase modifying Asn358 remain unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Low\",\n      \"gaps\": [\n        \"No ChIP-seq or CUT&RUN data available for genome-wide binding\",\n        \"Structural determinants of context-dependent activation versus repression unknown\",\n        \"In vivo genetic models (knockout mice) not reported\"\n      ]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [0, 1, 4]},\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [0, 1, 4]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [0, 1, 4]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [0, 1, 4]},\n      {\"term_id\": \"R-HSA-162582\", \"supporting_discovery_ids\": [2, 3]},\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [0, 1, 4]},\n      {\"term_id\": \"R-HSA-4839726\", \"supporting_discovery_ids\": [0, 7]}\n    ],\n    \"complexes\": [],\n    \"partners\": [\"KAP1\", \"BANP\"],\n    \"other_free_text\": []\n  }\n}\n```"}