{"gene":"ZBTB12","run_date":"2026-06-11T09:02:06","timeline":{"discoveries":[{"year":2023,"finding":"ZBTB12 acts as a molecular barrier to dedifferentiation in human pluripotent stem cells (hPSCs) by fine-tuning the expression of HERVH (human endogenous retrovirus H), a primate-specific retrotransposon, and downregulating HERVH-overlapping lncRNAs; this downregulation is necessary for successful exit from the pluripotent state and lineage derivation into three germ layers.","method":"Exact transcription start site mapping, single-cell RNA sequencing, loss-of-function experiments in hPSCs with defined differentiation phenotype readout","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Moderate — loss-of-function with defined cellular phenotype, single-cell RNA-seq, two orthogonal methods in one focused study on the specific gene","pmids":["36759523"],"is_preprint":false},{"year":2025,"finding":"ZBTB12 functions as a transcriptional repressor of TOMM7 in kidney tubular cells; ZBTB12 knockdown (via tubular cell-targeted siRNA) upregulates TOMM7 expression, restoring PINK1/Parkin-mediated mitophagy and alleviating diabetic kidney disease in db/db mice.","method":"siRNA knockdown of Zbtb12 with lithocholic acid-conjugated delivery in vivo; Western blotting; functional mitophagy assays; db/db mouse model","journal":"Kidney international","confidence":"Medium","confidence_rationale":"Tier 2 / Weak — defined in vivo loss-of-function with specific phenotypic readout (mitophagy, TOMM7 expression), single lab, single study","pmids":["41276015"],"is_preprint":false},{"year":2025,"finding":"ZBTB12 transcriptionally activates DNMT3B in breast cancer cells, which in turn methylates and silences the ALDH1A2 promoter; knockdown of ZBTB12 reduces DNMT3B activity and elevates ALDH1A2 protein, suppressing breast cancer cell proliferation, invasion, and migration. DNMT3B overexpression abrogates the suppressive effects of si-ZBTB12.","method":"Transcription factor binding prediction, Methylation-Specific PCR, Western blot, siRNA knockdown of ZBTB12, DNMT3B overexpression rescue, in vitro cellular proliferation/invasion/migration assays","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 2 / Weak — epistasis via rescue experiment, multiple orthogonal methods (MSP, Western blot, functional assays), single lab, single study","pmids":["40543226"],"is_preprint":false},{"year":2023,"finding":"HOXA6 transcriptionally regulates ZBTB12 in cancer-associated fibroblasts (CAFs): ChIP/binding assays confirmed HOXA6 binds the ZBTB12 promoter in 293T cells and CAFs; HOXA6 silencing downregulates ZBTB12 mRNA and protein; ZBTB12 knockdown in CAFs inhibits gastric cancer cell malignancy (growth, migration, invasion), while ZBTB12 overexpression enhances it.","method":"hTFtarget database prediction, HOXA6-ZBTB12 promoter binding assay in 293T and CAFs, siRNA knockdown, overexpression, in vitro cancer cell functional assays","journal":"Acta pharmaceutica (Zagreb, Croatia)","confidence":"Medium","confidence_rationale":"Tier 2 / Weak — promoter binding confirmed experimentally, loss- and gain-of-function with specific phenotypic readout, single lab","pmids":["37708965"],"is_preprint":false}],"current_model":"ZBTB12 is a BTB-domain zinc finger transcription factor that (1) acts as a molecular barrier to dedifferentiation in pluripotent stem cells by repressing HERVH retrotransposon-overlapping lncRNAs; (2) transcriptionally represses TOMM7 in kidney tubular cells, thereby restraining PINK1/Parkin-mediated mitophagy; (3) transcriptionally activates DNMT3B in breast cancer cells, promoting DNMT3B-mediated methylation and silencing of ALDH1A2 to drive cancer progression; and (4) is itself transcriptionally activated by HOXA6 in cancer-associated fibroblasts to promote gastric cancer cell malignancy."},"narrative":{"mechanistic_narrative":"ZBTB12 is a sequence-specific transcriptional regulator that governs cell-state decisions across stem cell maintenance, organ homeostasis, and cancer progression [PMID:36759523, PMID:40543226]. In human pluripotent stem cells it acts as a molecular barrier to dedifferentiation by fine-tuning expression of the primate-specific retrotransposon HERVH and downregulating HERVH-overlapping lncRNAs, a step required for exit from the pluripotent state and derivation of the three germ layers [PMID:36759523]. ZBTB12 functions predominantly as a transcriptional repressor in differentiated tissue, silencing TOMM7 in kidney tubular cells and thereby restraining PINK1/Parkin-mediated mitophagy, such that its knockdown restores mitophagy and alleviates diabetic kidney disease in db/db mice [PMID:41276015]. In breast cancer cells ZBTB12 instead acts as a transcriptional activator of the DNA methyltransferase DNMT3B, driving methylation and silencing of the ALDH1A2 promoter to promote proliferation, invasion, and migration [PMID:40543226]. ZBTB12 expression is itself driven by HOXA6, which binds the ZBTB12 promoter in cancer-associated fibroblasts to promote gastric cancer cell malignancy [PMID:37708965]. The direct DNA-binding sites and structural basis of ZBTB12's context-dependent switch between repression and activation have not been characterized in the available corpus.","teleology":[{"year":2023,"claim":"Established a developmental role for ZBTB12 as a gatekeeper of cell identity, showing it restrains dedifferentiation rather than acting only in terminal cell types.","evidence":"TSS mapping, single-cell RNA-seq, and loss-of-function in human pluripotent stem cells with differentiation readout","pmids":["36759523"],"confidence":"High","gaps":["Direct ZBTB12 binding sites on HERVH/lncRNA loci not mapped","Mechanism of how ZBTB12 'fine-tunes' rather than fully represses HERVH unresolved","Co-factors mediating repression unidentified"]},{"year":2023,"claim":"Placed ZBTB12 downstream of a HOXA6 transcriptional input, identifying an upstream activator and linking ZBTB12 to stromal-driven gastric cancer malignancy.","evidence":"HOXA6-ZBTB12 promoter binding assay in 293T cells and CAFs, siRNA knockdown and overexpression, in vitro cancer functional assays","pmids":["37708965"],"confidence":"Medium","gaps":["Downstream ZBTB12 targets in CAFs not defined","Single lab/single study","Secreted or contact-mediated signal from CAF to cancer cell not identified"]},{"year":2025,"claim":"Defined ZBTB12 as a transcriptional repressor of TOMM7 controlling mitophagy, connecting it to a clinically relevant disease phenotype in vivo.","evidence":"Tubular-targeted siRNA knockdown in db/db mice, Western blotting, mitophagy functional assays","pmids":["41276015"],"confidence":"Medium","gaps":["Direct binding of ZBTB12 to the TOMM7 promoter not demonstrated","Single study","Whether repression is direct or indirect unresolved"]},{"year":2025,"claim":"Revealed ZBTB12 can act as a transcriptional activator coupling it to DNA methylation machinery, broadening its activity beyond repression.","evidence":"TF binding prediction, methylation-specific PCR, siRNA knockdown with DNMT3B overexpression rescue, in vitro proliferation/invasion/migration assays in breast cancer cells","pmids":["40543226"],"confidence":"Medium","gaps":["Direct ZBTB12 occupancy of the DNMT3B promoter not shown by ChIP","Single lab/single study","Mechanistic basis for activation vs. repression in different tissues unknown"]},{"year":null,"claim":"The structural and biochemical determinants that switch ZBTB12 between transcriptional repression and activation, and its genome-wide direct binding repertoire, remain undefined.","evidence":"","pmids":[],"confidence":"Medium","gaps":["No direct DNA-binding motif or genome-wide occupancy map","No co-repressor/co-activator complexes identified","No structural model of the BTB or zinc finger domains"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[0,1,2,3]},{"term_id":"GO:0003677","term_label":"DNA 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many","driving_tissues":[],"url":"https://www.proteinatlas.org/search/ZBTB12"},"hgnc":{"alias_symbol":["G10","NG35","D6S59E"],"prev_symbol":["C6orf46"]},"alphafold":{"accession":"Q9Y330","domains":[{"cath_id":"3.30.160","chopping":"332-385","consensus_level":"medium","plddt":67.9707,"start":332,"end":385}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9Y330","model_url":"https://alphafold.ebi.ac.uk/files/AF-Q9Y330-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-Q9Y330-F1-predicted_aligned_error_v6.png","plddt_mean":55.94},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=ZBTB12","jax_strain_url":"https://www.jax.org/strain/search?query=ZBTB12"},"sequence":{"accession":"Q9Y330","fasta_url":"https://rest.uniprot.org/uniprotkb/Q9Y330.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/Q9Y330/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/Q9Y330"}},"corpus_meta":[{"pmid":"26705428","id":"PMC_26705428","title":"Gene-specific DNA methylation profiles and LINE-1 hypomethylation are associated with myocardial infarction risk.","date":"2015","source":"Clinical epigenetics","url":"https://pubmed.ncbi.nlm.nih.gov/26705428","citation_count":62,"is_preprint":false},{"pmid":"10903453","id":"PMC_10903453","title":"Cloning and characterization of two overlapping genes in a subregion at 6q21 involved in replicative senescence and schizophrenia.","date":"2000","source":"Gene","url":"https://pubmed.ncbi.nlm.nih.gov/10903453","citation_count":20,"is_preprint":false},{"pmid":"36759523","id":"PMC_36759523","title":"ZBTB12 is a molecular barrier to dedifferentiation in human pluripotent stem cells.","date":"2023","source":"Nature communications","url":"https://pubmed.ncbi.nlm.nih.gov/36759523","citation_count":19,"is_preprint":false},{"pmid":"31077224","id":"PMC_31077224","title":"ZBTB12 DNA methylation is associated with coagulation- and inflammation-related blood cell parameters: findings from the Moli-family cohort.","date":"2019","source":"Clinical epigenetics","url":"https://pubmed.ncbi.nlm.nih.gov/31077224","citation_count":13,"is_preprint":false},{"pmid":"23079975","id":"PMC_23079975","title":"Association of MHC class-III gene polymorphisms with ER-positive breast cancer in Chinese Han population.","date":"2012","source":"Genetics and molecular research : GMR","url":"https://pubmed.ncbi.nlm.nih.gov/23079975","citation_count":13,"is_preprint":false},{"pmid":"38146367","id":"PMC_38146367","title":"The HLA-B*57:01 allele corresponds to a very large MHC haploblock likely explaining its massive effect for HIV-1 elite control.","date":"2023","source":"Frontiers in immunology","url":"https://pubmed.ncbi.nlm.nih.gov/38146367","citation_count":12,"is_preprint":false},{"pmid":"33267929","id":"PMC_33267929","title":"Epigenome-wide associations between observed maternal sensitivity and offspring DNA methylation: a population-based prospective study in children.","date":"2020","source":"Psychological medicine","url":"https://pubmed.ncbi.nlm.nih.gov/33267929","citation_count":10,"is_preprint":false},{"pmid":"37708965","id":"PMC_37708965","title":"Astragaloside IV inhibits pathological functions of gastric cancer-associated fibroblasts through regulation of the HOXA6/ZBTB12 axis.","date":"2023","source":"Acta pharmaceutica (Zagreb, Croatia)","url":"https://pubmed.ncbi.nlm.nih.gov/37708965","citation_count":7,"is_preprint":false},{"pmid":"29514706","id":"PMC_29514706","title":"The role of ixazomib as an augmented conditioning therapy in salvage autologous stem cell transplant (ASCT) and as a post-ASCT consolidation and maintenance strategy in patients with relapsed multiple myeloma (ACCoRd [UK-MRA Myeloma XII] trial): study protocol for a Phase III randomised controlled trial.","date":"2018","source":"Trials","url":"https://pubmed.ncbi.nlm.nih.gov/29514706","citation_count":6,"is_preprint":false},{"pmid":"41276015","id":"PMC_41276015","title":"Mitochondrial protein TOMM7 alleviates diabetic kidney disease by regulating mitophagy via intracellular redistribution of phospholipase PLA2G6.","date":"2025","source":"Kidney international","url":"https://pubmed.ncbi.nlm.nih.gov/41276015","citation_count":3,"is_preprint":false},{"pmid":"39762745","id":"PMC_39762745","title":"Deep analysis of the major histocompatibility complex genetic associations using covariate analysis and haploblocks unravels new mechanisms for the molecular etiology of Elite Control in AIDS.","date":"2025","source":"BMC immunology","url":"https://pubmed.ncbi.nlm.nih.gov/39762745","citation_count":3,"is_preprint":false},{"pmid":"39710381","id":"PMC_39710381","title":"Serum DLAT Is a Potential Diagnostic Marker in AFP-Negative HCC.","date":"2024","source":"Biological & pharmaceutical 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lineage derivation into three germ layers.\",\n      \"method\": \"Exact transcription start site mapping, single-cell RNA sequencing, loss-of-function experiments in hPSCs with defined differentiation phenotype readout\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — loss-of-function with defined cellular phenotype, single-cell RNA-seq, two orthogonal methods in one focused study on the specific gene\",\n      \"pmids\": [\"36759523\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"ZBTB12 functions as a transcriptional repressor of TOMM7 in kidney tubular cells; ZBTB12 knockdown (via tubular cell-targeted siRNA) upregulates TOMM7 expression, restoring PINK1/Parkin-mediated mitophagy and alleviating diabetic kidney disease in db/db mice.\",\n      \"method\": \"siRNA knockdown of Zbtb12 with lithocholic acid-conjugated delivery in vivo; Western blotting; functional mitophagy assays; db/db mouse model\",\n      \"journal\": \"Kidney international\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Weak — defined in vivo loss-of-function with specific phenotypic readout (mitophagy, TOMM7 expression), single lab, single study\",\n      \"pmids\": [\"41276015\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"ZBTB12 transcriptionally activates DNMT3B in breast cancer cells, which in turn methylates and silences the ALDH1A2 promoter; knockdown of ZBTB12 reduces DNMT3B activity and elevates ALDH1A2 protein, suppressing breast cancer cell proliferation, invasion, and migration. DNMT3B overexpression abrogates the suppressive effects of si-ZBTB12.\",\n      \"method\": \"Transcription factor binding prediction, Methylation-Specific PCR, Western blot, siRNA knockdown of ZBTB12, DNMT3B overexpression rescue, in vitro cellular proliferation/invasion/migration assays\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Weak — epistasis via rescue experiment, multiple orthogonal methods (MSP, Western blot, functional assays), single lab, single study\",\n      \"pmids\": [\"40543226\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"HOXA6 transcriptionally regulates ZBTB12 in cancer-associated fibroblasts (CAFs): ChIP/binding assays confirmed HOXA6 binds the ZBTB12 promoter in 293T cells and CAFs; HOXA6 silencing downregulates ZBTB12 mRNA and protein; ZBTB12 knockdown in CAFs inhibits gastric cancer cell malignancy (growth, migration, invasion), while ZBTB12 overexpression enhances it.\",\n      \"method\": \"hTFtarget database prediction, HOXA6-ZBTB12 promoter binding assay in 293T and CAFs, siRNA knockdown, overexpression, in vitro cancer cell functional assays\",\n      \"journal\": \"Acta pharmaceutica (Zagreb, Croatia)\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Weak — promoter binding confirmed experimentally, loss- and gain-of-function with specific phenotypic readout, single lab\",\n      \"pmids\": [\"37708965\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"ZBTB12 is a BTB-domain zinc finger transcription factor that (1) acts as a molecular barrier to dedifferentiation in pluripotent stem cells by repressing HERVH retrotransposon-overlapping lncRNAs; (2) transcriptionally represses TOMM7 in kidney tubular cells, thereby restraining PINK1/Parkin-mediated mitophagy; (3) transcriptionally activates DNMT3B in breast cancer cells, promoting DNMT3B-mediated methylation and silencing of ALDH1A2 to drive cancer progression; and (4) is itself transcriptionally activated by HOXA6 in cancer-associated fibroblasts to promote gastric cancer cell malignancy.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"ZBTB12 is a sequence-specific transcriptional regulator that governs cell-state decisions across stem cell maintenance, organ homeostasis, and cancer progression [#0, #2]. In human pluripotent stem cells it acts as a molecular barrier to dedifferentiation by fine-tuning expression of the primate-specific retrotransposon HERVH and downregulating HERVH-overlapping lncRNAs, a step required for exit from the pluripotent state and derivation of the three germ layers [#0]. ZBTB12 functions predominantly as a transcriptional repressor in differentiated tissue, silencing TOMM7 in kidney tubular cells and thereby restraining PINK1/Parkin-mediated mitophagy, such that its knockdown restores mitophagy and alleviates diabetic kidney disease in db/db mice [#1]. In breast cancer cells ZBTB12 instead acts as a transcriptional activator of the DNA methyltransferase DNMT3B, driving methylation and silencing of the ALDH1A2 promoter to promote proliferation, invasion, and migration [#2]. ZBTB12 expression is itself driven by HOXA6, which binds the ZBTB12 promoter in cancer-associated fibroblasts to promote gastric cancer cell malignancy [#3]. The direct DNA-binding sites and structural basis of ZBTB12's context-dependent switch between repression and activation have not been characterized in the available corpus.\",\n  \"teleology\": [\n    {\n      \"year\": 2023,\n      \"claim\": \"Established a developmental role for ZBTB12 as a gatekeeper of cell identity, showing it restrains dedifferentiation rather than acting only in terminal cell types.\",\n      \"evidence\": \"TSS mapping, single-cell RNA-seq, and loss-of-function in human pluripotent stem cells with differentiation readout\",\n      \"pmids\": [\"36759523\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct ZBTB12 binding sites on HERVH/lncRNA loci not mapped\", \"Mechanism of how ZBTB12 'fine-tunes' rather than fully represses HERVH unresolved\", \"Co-factors mediating repression unidentified\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Placed ZBTB12 downstream of a HOXA6 transcriptional input, identifying an upstream activator and linking ZBTB12 to stromal-driven gastric cancer malignancy.\",\n      \"evidence\": \"HOXA6-ZBTB12 promoter binding assay in 293T cells and CAFs, siRNA knockdown and overexpression, in vitro cancer functional assays\",\n      \"pmids\": [\"37708965\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Downstream ZBTB12 targets in CAFs not defined\", \"Single lab/single study\", \"Secreted or contact-mediated signal from CAF to cancer cell not identified\"]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"Defined ZBTB12 as a transcriptional repressor of TOMM7 controlling mitophagy, connecting it to a clinically relevant disease phenotype in vivo.\",\n      \"evidence\": \"Tubular-targeted siRNA knockdown in db/db mice, Western blotting, mitophagy functional assays\",\n      \"pmids\": [\"41276015\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct binding of ZBTB12 to the TOMM7 promoter not demonstrated\", \"Single study\", \"Whether repression is direct or indirect unresolved\"]\n    },\n    {\n      \"year\": 2025,\n      \"claim\": \"Revealed ZBTB12 can act as a transcriptional activator coupling it to DNA methylation machinery, broadening its activity beyond repression.\",\n      \"evidence\": \"TF binding prediction, methylation-specific PCR, siRNA knockdown with DNMT3B overexpression rescue, in vitro proliferation/invasion/migration assays in breast cancer cells\",\n      \"pmids\": [\"40543226\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct ZBTB12 occupancy of the DNMT3B promoter not shown by ChIP\", \"Single lab/single study\", \"Mechanistic basis for activation vs. repression in different tissues unknown\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"The structural and biochemical determinants that switch ZBTB12 between transcriptional repression and activation, and its genome-wide direct binding repertoire, remain undefined.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No direct DNA-binding motif or genome-wide occupancy map\", \"No co-repressor/co-activator complexes identified\", \"No structural model of the BTB or zinc finger domains\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [0, 1, 2, 3]},\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [2, 3]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [0, 2, 3]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [0, 1, 2, 3]},\n      {\"term_id\": \"R-HSA-1643685\", \"supporting_discovery_ids\": [1, 2, 3]}\n    ],\n    \"complexes\": [],\n    \"partners\": [],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"faith_supported":5,"faith_total":5,"faith_pct":100.0}}