{"gene":"NR2F1","run_date":"2026-06-10T05:19:52","timeline":{"discoveries":[{"year":1997,"finding":"COUP-TFI (NR2F1) represses transcription via direct interaction with corepressors N-CoR and SMRT. The C-terminal 35 amino acids of COUP-TFI constitute a repressor domain required for silencing activity. COUP-TFI and unliganded TRβ share common corepressors, demonstrated by squelching experiments and yeast two-hybrid/GST pull-down assays showing direct binding to N-CoR (aa 921-2453) and SMRT fragments.","method":"Yeast two-hybrid, GST pull-down, cotransfection repression/squelching assays, deletion mutagenesis","journal":"Molecular endocrinology","confidence":"High","confidence_rationale":"Tier 1 / Strong — reconstitution via GST pull-down, yeast two-hybrid, and functional mutagenesis all in one study with clear domain mapping","pmids":["9171235"],"is_preprint":false},{"year":1992,"finding":"EAR-3/COUP-TFI binds specifically to regulatory elements BA1, CIIIB, and AIIJ in the ApoB, ApoCIII, and ApoAII gene promoters with Kd 1–3 nM, and represses transcription from these elements in cotransfection experiments in HepG2 cells. EAR-3 can compete with and displace HNF-4 from the same elements to suppress transcription.","method":"EMSA (dissociation constant measurement), cotransfection reporter assays in HepG2 cells, competition binding assays","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1-2 / Strong — direct binding with quantified affinity, functional transcription assays, competition experiments replicated across multiple target genes","pmids":["1639815"],"is_preprint":false},{"year":1995,"finding":"EAR-3/COUP-TFI represses Oct-3/4 promoter activity through the RAREoct site in P19 embryonal carcinoma cells in a dose-dependent manner via the C-terminal domain. COUP-TFI binds RAREoct with higher affinity than RAR:RXR heterodimers, allowing it to compete with and displace RAR:RXR from the site, actively silencing Oct-3/4 promoter activity. RA treatment of EC cells upregulates COUP-TFI expression, which inversely correlates with Oct-3/4 repression.","method":"Cotransfection reporter assays, EMSA competition/binding assays, deletion mutagenesis of C-terminal domain","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 1-2 / Strong — direct DNA binding competition assays, functional reporter assays with domain mapping, and kinetic correlation in multiple cell contexts","pmids":["7823919"],"is_preprint":false},{"year":1999,"finding":"Loss of COUP-TFI in mouse cortex results in absence of cortical layer IV due to failure of thalamocortical projections, and subplate neurons undergo improper differentiation and premature cell death. COUP-TFI is required for subplate neuron differentiation which in turn guides thalamocortical axon innervation.","method":"Coup-tf1 null mouse knockout, histology, axon tracing","journal":"Neuron","confidence":"High","confidence_rationale":"Tier 2 / Strong — clean genetic loss-of-function with defined cellular phenotypes and mechanistic pathway placement (subplate → thalamocortical guidance)","pmids":["10624948"],"is_preprint":false},{"year":2001,"finding":"COUP-TFI acts as an intrinsic factor for early regionalization of the neocortex, independent of thalamic input. COUP-TFI null mice show altered region-specific expression of cortical marker genes and miswired area-specific thalamocortical connections, indicating COUP-TFI works in concert with Pax6 and Emx2 to specify neocortical identity.","method":"COUP-TFI null mouse knockout, marker gene expression analysis, axon tracing","journal":"Genes & development","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic loss-of-function with molecular and anatomical readouts, epistasis with Pax6/Emx2","pmids":["11511537"],"is_preprint":false},{"year":2007,"finding":"Cortex-specific deletion of COUP-TFI in mice causes massive expansion of frontal/motor areas and compression of sensory areas. COUP-TFI acts within its expression domain (highest in parietal/occipital, lowest in frontal cortex) to repress frontal/motor area identities and specify sensory area identities, demonstrating it is required for balancing neocortical arealization.","method":"Cortex-specific conditional knockout (Cre-lox), molecular marker analysis, axonal projection tracing","journal":"Nature neuroscience","confidence":"High","confidence_rationale":"Tier 2 / Strong — conditional loss-of-function with multiple orthogonal readouts (molecular markers, axonal projections, area-specific gene expression)","pmids":["17828260"],"is_preprint":false},{"year":2007,"finding":"COUP-TFI loss-of-function and gain-of-function manipulations show it promotes ventral cortical fate, promotes cell cycle exit and neural differentiation, and regulates the balance of early- and late-born neurons, in part by repressing MAPK/ERK, AKT, and β-catenin signaling in cortical progenitors.","method":"Loss-of-function and gain-of-function in vivo and in vitro, signaling pathway readouts (pERK, pAKT, β-catenin)","journal":"Cerebral cortex","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genetic manipulation with pathway readouts in single lab, signaling pathway link inferred from expression changes rather than direct biochemical interaction","pmids":["18165280"],"is_preprint":false},{"year":2008,"finding":"COUP-TFI (and COUP-TFII) are required for temporal specification of neural stem/progenitor cells in the CNS, including acquisition of gliogenic competence. Double knockdown of Coup-tfI/II in ESC-derived NSPCs and developing mouse forebrain causes sustained neurogenesis and prolonged generation of early-born neurons, demonstrating these factors function as molecular switches for the neurogenic-to-gliogenic transition.","method":"Double shRNA knockdown in ESC-derived NSPCs and in vivo mouse forebrain, cell fate marker analysis, gliogenic cytokine responsiveness assays","journal":"Nature neuroscience","confidence":"High","confidence_rationale":"Tier 2 / Strong — double-gene knockdown in two independent systems (ESC-derived and in vivo) with defined cellular phenotype","pmids":["19160499"],"is_preprint":false},{"year":2008,"finding":"COUP-TFI forms a transcriptional repressor complex with NCoR, TIF1β/KAP-1, HDAC1, SWI/SNF member Brahma, and DBC1 in HeLa cells. Tandem affinity purification identified these components. COUP-TFI interacts directly with NCoR in a manner different from other nuclear receptors; DBC1 stabilizes the COUP-TFI–NCoR interaction. This complex represses TNFAIP8 transcription and is involved in TNFα signaling.","method":"Tandem affinity purification (TAP), in vitro binding assays, cotransfection reporter assays, TNFAIP8 promoter analysis","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1-2 / Moderate — TAP-MS identifies complex components, in vitro direct binding assays confirm specific interactions, functional reporter assays in single lab","pmids":["19112178"],"is_preprint":false},{"year":2006,"finding":"COUP-TFI is required for axonal growth and guidance of forebrain commissures (corpus callosum, hippocampal commissure, anterior commissure). In COUP-TFI null mice, fibers fail to cross the midline. Microarray analysis of COUP-TFI null cortex reveals decreased MAP1B and increased RND2 protein levels, identifying these cytoskeleton regulators as downstream effectors of COUP-TFI in axonal morphogenesis.","method":"COUP-TFI null mouse knockout, axon tracing, microarray expression profiling, primary hippocampal neuron culture, Western blot","journal":"Development","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic loss-of-function with multiple mechanistic readouts (axon tracing, transcriptome, protein-level validation in vivo and in vitro)","pmids":["17021036"],"is_preprint":false},{"year":2010,"finding":"COUP-TFI controls timing of birth and specification of corticospinal motor neurons (CSMN) in somatosensory cortex by repressing a CSMN differentiation program. Loss of COUP-TFI causes premature area-specific generation of neurons with CSMN features that project to subcerebral structures, while genuine CSMN fail to project beyond the pons, resulting in impaired skilled motor function.","method":"Conditional cortical COUP-TFI knockout, axon tracing, motor behavior assays, molecular marker analysis","journal":"PNAS","confidence":"High","confidence_rationale":"Tier 2 / Strong — conditional loss-of-function with area-specific cellular phenotype, anatomical tracing, and behavioral readout in same study","pmids":["20133588"],"is_preprint":false},{"year":2011,"finding":"COUP-TFI is required for specification of CGE-derived cortical interneurons. Conditional loss of COUP-TFI in subventricular precursors and postmitotic cells leads to decreased late-born VIP+ and CR+ bipolar neurons and compensatory increase of early-born PV+ MGE-derived interneurons. COUP-TFI mutants are more resistant to pharmacologically induced seizures in a GABAergic signaling-dependent manner.","method":"Conditional knockout (subventricular precursor and postmitotic), interneuron subtype marker analysis, pharmacological seizure induction","journal":"The Journal of neuroscience","confidence":"High","confidence_rationale":"Tier 2 / Strong — conditional loss-of-function with cell-type-specific markers and pharmacological functional readout","pmids":["21430164"],"is_preprint":false},{"year":2011,"finding":"COUP-TFI directly represses Rnd2 (a Rho-GTPase modulator of radial migration) expression at the post-mitotic level along the rostrocaudal axis of the neocortex. In COUP-TFI mutant mice, callosal projection neurons are delayed in reaching the cortical plate and have morphological defects. Restoring correct Rnd2 levels cell-autonomously rescues neuron radial migration and morphological transitions as well as axonal elongation and dendritic arborization defects.","method":"COUP-TFI conditional knockout, in utero electroporation rescue (Rnd2 shRNA), immunostaining, axon/dendrite morphology analysis","journal":"Development","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic loss-of-function combined with cell-autonomous rescue experiment targeting specific downstream effector","pmids":["21965613"],"is_preprint":false},{"year":2000,"finding":"COUP-TFI interacts directly with ERα (estrogen receptor alpha), COUP-TF, and ERRα1 in a ligand-dependent manner in vitro. AHR interacts with COUP-TFI in transfected CV-1 cells. COUP-TFI binds consensus xenobiotic response elements (XRE), and overexpression of COUP-TFI inhibits TCDD-activated CYP1A1 promoter reporter activity, suggesting COUP-TFI regulates AHR action via DNA binding competition and protein-protein interaction.","method":"In vitro protein-protein interaction assays, transfection in CV-1 cells, EMSA (XRE binding), reporter assay in MCF-7 cells","journal":"Archives of biochemistry and biophysics","confidence":"Medium","confidence_rationale":"Tier 2-3 / Moderate — direct binding demonstrated in vitro, confirmed in cell transfection, functional reporter assay, but limited mechanistic depth on the interaction interface","pmids":["10620335"],"is_preprint":false},{"year":2002,"finding":"COUP-TFI forms a tight physical complex with human ERα. This complex increases the affinity of ERα for ERK2/p42MAPK, resulting in enhanced phosphorylation of hERα Ser118 and strengthened AF-1 transactivation activity. The cooperation is restricted to cell lines permissive to ERα AF-1 activation.","method":"Co-immunoprecipitation (complex formation), kinase assay (Ser118 phosphorylation), transfection in multiple cell lines, functional reporter assays","journal":"The EMBO journal","confidence":"High","confidence_rationale":"Tier 2 / Moderate — reciprocal co-IP demonstrates complex, kinase assay shows functional consequence (Ser118 phosphorylation), confirmed in multiple cell lines","pmids":["12093745"],"is_preprint":false},{"year":2003,"finding":"EAR3/COUP-TFI represses LHR gene transcription via a mechanism involving cross-talk among EAR3, Sp1/Sp3 bound at the Sp1(I) site, and TFIIB. EAR3 specifically decreases association of TFIIB with the Sp1(I) site and reduces RNA polymerase II recruitment to the LHR promoter. Overexpression of TFIIB counteracts EAR3-mediated inhibition. EAR3's N-terminal and DNA-binding domains are required for Sp1 interaction and inhibitory function.","method":"Cotransfection reporter assays (SL2 cells), ChIP (RNA pol II recruitment), EMSA/co-IP (TFIIB-Sp1 interaction), deletion mutagenesis","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 1-2 / Moderate — ChIP demonstrates mechanistic consequence at the endogenous promoter level, combined with reporter assays and direct protein interaction studies","pmids":["12972613"],"is_preprint":false},{"year":2003,"finding":"COUP-TF1 represses HBV pregenomic RNA and pre-C RNA synthesis >10-fold through nuclear receptor response elements NRREpreC and NRREenhI. HNF4α and COUP-TF1 antagonize each other's effects on HBV gene expression and viral DNA synthesis. A naturally occurring HBV variant that prevents COUP-TF1 binding but retains HNF4α binding shows significantly higher pregenomic RNA and viral DNA synthesis.","method":"Cotransfection in Huh7 cells, viral RNA quantification, viral DNA synthesis assay, natural variant analysis, deletion analysis","journal":"Journal of virology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — functional reporter and viral replication assays in one cell line, natural variant provides additional mechanistic evidence, single lab","pmids":["12551987"],"is_preprint":false},{"year":2004,"finding":"COUP-TFI is expressed in oligodendrocyte lineage cells and is required for oligodendrocyte differentiation and CNS myelination. COUP-TFI null mice show delayed axon myelination and increased dysmyelination. In vitro differentiation assays confirm myelination defects are due to delayed oligodendrocyte differentiation. COUP-TFI acts as an upstream regulator of SCIP/Oct-6/Tst-1, a transcription factor involved in axon myelination.","method":"COUP-TFI null mouse knockout, in vitro oligodendrocyte differentiation assay, in situ hybridization, transfection analysis","journal":"Developmental biology","confidence":"High","confidence_rationale":"Tier 2 / Moderate — genetic loss-of-function with in vitro rescue confirmation, upstream regulatory relationship established by transfection","pmids":["14738874"],"is_preprint":false},{"year":2000,"finding":"COUP-TFI inhibits BMP-4 1A promoter activity in fetal rat calvarial osteoblasts. Specific binding of COUP-TFI to response regions in the BMP-4 1A 5'-flanking region was demonstrated, and co-transfection of a COUP-TFI expression plasmid with the BMP-4 1A promoter construct showed COUP-TFI silences BMP-4 transcription.","method":"EMSA (specific binding to promoter elements), cotransfection reporter assay in primary osteoblasts","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2-3 / Moderate — direct DNA binding by EMSA and functional reporter assay in relevant cell type, single lab","pmids":["7499338"],"is_preprint":false},{"year":2000,"finding":"COUP-TFI binds the Nkx2.5 binding site in the calreticulin gene promoter and suppresses calreticulin transcription during cardiac development. Nkx2.5 activates calreticulin gene expression while COUP-TF1 binding to the same site antagonizes Nkx2.5-mediated activation.","method":"Cotransfection reporter assays, DNA binding assays, promoter analysis","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2-3 / Moderate — functional reporter and DNA binding assays in relevant cardiac context, single lab","pmids":["11106640"],"is_preprint":false},{"year":2000,"finding":"In differentiating P19 cells, COUP-TFI dose-dependently regulates neuronal differentiation and migration. Low COUP-TFI enhances neuron outgrowth; high COUP-TFI impedes neuronal differentiation and elevates E-cadherin mRNA. Dominant-negative COUP-TFI inhibits neurite extension. COUP-TFI favors neuron migration through an integrin-dependent mechanism and upregulates vitronectin mRNA and promoter activity.","method":"Stable and transient transfection in P19 cells, dominant-negative approach, RGD peptide interference assay, RT-PCR, transient transfection reporter assay (vitronectin promoter)","journal":"Molecular endocrinology","confidence":"Medium","confidence_rationale":"Tier 2-3 / Moderate — multiple complementary approaches in one study, dose-response and dominant-negative experiments establish specificity","pmids":["11117523"],"is_preprint":false},{"year":2000,"finding":"COUP-TFI (as a transactivator) requires amino acids 184-423 for all three mechanisms of transcriptional activation: binding to gAF1/gAF3 accessory elements, direct DNA binding transactivation, and coactivation through DNA-bound HNF-4. GRIP1 and SRC-1 potentiate COUP-TFI activity and associate with COUP-TFI in vivo via this same region.","method":"Deletion mutagenesis, cotransfection reporter assays, in vivo co-immunoprecipitation with GRIP1/SRC-1","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — domain mapping combined with in vivo co-IP for coactivator interaction, single lab","pmids":["10652338"],"is_preprint":false},{"year":2006,"finding":"COUP-TFI controls Notch signaling in cochlear development. COUP-TFI knockout mice show increased hair cell number and misregulation of Notch components including Jag1 and Hes5, consistent with reduced Notch signaling. Inhibition of Notch activity by γ-secretase inhibitor causes greater increase in hair cell differentiation in COUP-TFI(-/-) than wild-type cochlear cultures, indicating hypersensitivity to Notch inactivation in COUP-TFI null cochlea.","method":"COUP-TFI knockout mouse, in vitro organ culture with γ-secretase inhibitor, Notch target gene expression analysis","journal":"Development","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genetic loss-of-function combined with pharmacological intervention in organ culture, pathway epistasis established","pmids":["16914494"],"is_preprint":false},{"year":2010,"finding":"Genome-wide identification of direct COUP-TFI target genes using integration of microarray data and COUP-TFI ChIP. Fabp7 is a direct COUP-TFI target: COUP-TFI occupies conserved binding sites in the Fabp7 promoter in vivo (ChIP), Fabp7 transcript and protein are reduced in COUP-TFI null tissues, and the Fabp7 promoter shows active chromatin marks (H3K9ac, CBP, SRC-1 enrichment) dependent on COUP-TFI.","method":"Microarray (COUP-TFI KO vs WT inner ear), computational binding site prediction, ChIP (in vivo and in vitro), Western blot, chromatin state analysis","journal":"PloS one","confidence":"High","confidence_rationale":"Tier 1-2 / Moderate — ChIP validates in vivo occupancy, expression changes confirmed at transcript and protein level, active chromatin marks defined, single lab multiple orthogonal methods","pmids":["20111703"],"is_preprint":false},{"year":2012,"finding":"NR2F1 represses MTTP gene expression by binding to a direct repeat 1 (DR1) element in the MTTP promoter, which suppresses synergistic activation by HNF-4α and HNF-1α. This repression is further enhanced by nuclear receptor corepressor 1 (NCoR1). NR2F1 does not alter individual activities of HNF-4α or HNF-1 but specifically abrogates their synergistic cooperation.","method":"Cotransfection reporter assays, EMSA (DR1 binding), corepressor overexpression","journal":"Journal of lipid research","confidence":"Medium","confidence_rationale":"Tier 2-3 / Moderate — direct DNA binding by EMSA, functional reporter assays with mechanistic specificity (synergy abrogation), single lab","pmids":["22357705"],"is_preprint":false},{"year":2013,"finding":"PRC2 (specifically Suz12-dependent) is recruited to the NR2F1 promoter upon retinoic acid treatment, transiently increasing H3K27me3 marks and attenuating RA-induced NR2F1 transcription. Functional depletion of Suz12 by shRNA enhances RA-associated NR2F1 transcription, identifying PRC2 as a repressive modulator of NR2F1 expression.","method":"shRNA depletion of Suz12, RT-PCR, ChIP (H3K27me3, PRC2 occupancy), comparison with Hoxa5 gene","journal":"Nucleic acids research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP confirms PRC2 recruitment and H3K27me3 at NR2F1 promoter, shRNA functional test, single lab","pmids":["23666625"],"is_preprint":false},{"year":2013,"finding":"COUP-TFI and Sp8 reciprocally repress each other's expression in cortical progenitors. Misexpression of Sp8 represses COUP-TFI, and conditional ablation of Sp8 has the opposite effect. Transgenic misexpression of COUP-TFI downregulates Sp8. Sp8 promotes FGF target molecule expression in an Fgf8-independent manner.","method":"Binary transgenic misexpression, conditional Sp8 knockout, molecular marker analysis in developing cortex","journal":"Cerebral cortex","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — reciprocal gain- and loss-of-function in vivo establishes bidirectional cross-regulation, single lab","pmids":["23307639"],"is_preprint":false},{"year":2013,"finding":"COUP-TFI regulates activity-dependent tyrosine hydroxylase (TH) expression in dopaminergic olfactory bulb interneurons. Odor deprivation downregulates both TH and COUP-TFI in dopaminergic cells. Conditional inactivation of COUP-TFI in the EMX1 lineage reduces TH and ZIF268 expression. Lentiviral COUP-TFI deletion in adult-generated interneurons confirms cell-autonomous control of TH expression through ZIF268 induction.","method":"Conditional knockout (EMX1-Cre), odor deprivation paradigm, lentiviral cell-autonomous deletion, immunostaining","journal":"Development","confidence":"High","confidence_rationale":"Tier 2 / Moderate — conditional and cell-autonomous deletion both establish the COUP-TFI→ZIF268→TH regulatory pathway with functional activity-dependent correlation","pmids":["24227652"],"is_preprint":false},{"year":2014,"finding":"NR2F1 missense mutations in the zinc-finger DNA-binding domain and the putative ligand-binding domain decrease NR2F1 transcriptional activity as measured by luciferase reporter assay, establishing that NR2F1 DNA-binding and ligand-binding domain integrity is required for transcriptional function.","method":"Luciferase reporter assay with patient-derived missense mutant constructs","journal":"American journal of human genetics","confidence":"Medium","confidence_rationale":"Tier 2-3 / Moderate — functional loss-of-function assay with multiple patient mutations in two distinct domains, single cell-based assay","pmids":["24462372"],"is_preprint":false},{"year":2015,"finding":"NR2F1 drives tumor cell dormancy by inducing global chromatin repression and upregulating SOX9, RARβ, CDK inhibitors, and the pluripotency gene NANOG. NR2F1-dependent quiescence is recapitulated by co-treatment with 5-Aza-C and retinoic acid. In vivo blockade of NR2F1 interrupts growth arrest or survival of dormant DTCs in different organs.","method":"In vitro dormancy models (HNSCC), in vivo mouse models, epigenetic co-treatment (5-Aza-C + RA), gene knockdown/overexpression, ChIP (chromatin repression analysis), bone marrow DTC analysis from prostate cancer patients","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple in vitro and in vivo models, patient DTC validation, multiple downstream pathway components identified with functional epistasis","pmids":["25636082"],"is_preprint":false},{"year":2017,"finding":"Coup-TF1 and Coup-TF2 (Nr2f1 and Nr2f2) expressed in an arc-shaped MGE progenitor domain promote time-dependent survival of this neuroepithelium and specification of layer V SST+ cortical interneurons. They autonomously repress PV+ fate in MGE progenitors, in part by directly driving Sox6 expression.","method":"Conditional knockout of Coup-TF1/TF2 in MGE progenitors, interneuron subtype marker analysis, Sox6 expression analysis","journal":"Development","confidence":"High","confidence_rationale":"Tier 2 / Moderate — conditional loss-of-function with cell-type specific readouts and identification of direct downstream effector (Sox6)","pmids":["28694260"],"is_preprint":false},{"year":2019,"finding":"In the developing sensory neocortex, Foxg1 binds to an H3K4me1-enriched enhancer site to repress COUP-TFI expression. Ectopic Foxg1 in layer 4 cells transforms local projection neurons to callosal projection neurons; removal of Foxg1 in long-range projection neurons derepresses COUP-TFI and activates a layer 4 neuron-specific program. Early growth response genes (Egr) repress Foxg1 in layer 4 precursors via TGF-β signaling.","method":"ChIP (H3K4me1 enhancer), in utero electroporation (gain/loss of function), conditional knockout, layer-specific marker analysis","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 2 / Moderate — ChIP identifies specific enhancer, genetic manipulation in vivo establishes epistatic hierarchy (Egr→Foxg1→COUP-TFI)","pmids":["31395862"],"is_preprint":false},{"year":2018,"finding":"COUP-TFI/NR2F1 is necessary and sufficient to promote neurogenesis by suppressing astrogliogenesis in adult hippocampal neural stem cells. Inducible COUP-TFI knockout reduces neurogenesis and increases astrocyte production without depleting the NSC pool. Forced COUP-TFI expression decreases astrogliogenesis and rescues the neuro-astrogliogenic imbalance under neuroinflammation.","method":"Inducible conditional knockout, retroviral loss-of-function, genetic fate mapping, gain-of-function overexpression, neuroinflammation model","journal":"Cell reports","confidence":"High","confidence_rationale":"Tier 2 / Strong — bidirectional loss- and gain-of-function with fate mapping in vivo, including disease-relevant (neuroinflammation) rescue experiment","pmids":["29996095"],"is_preprint":false},{"year":2019,"finding":"NR2F1 promotes CXCL12 and CXCR4 expression in salivary adenoid cystic carcinoma cells and activates CXCL12/CXCR4 pathway. ChIP assays demonstrate direct NR2F1 binding at the CXCL12/CXCR4 loci. Overexpression of CXCL12 partially rescues proliferation, migration, and invasion activities suppressed by NR2F1 silencing.","method":"NR2F1 overexpression/siRNA knockdown, ChIP (CXCL12/CXCR4 promoters), proliferation/migration/invasion assays, rescue experiments","journal":"BMC cancer","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP confirms direct binding at target gene loci, rescue experiment places CXCL12 downstream of NR2F1, single lab","pmids":["31357956"],"is_preprint":false},{"year":2020,"finding":"NR2F1 regionally controls long-term self-renewal of neural progenitor cells via modulation of cell cycle genes and Pax6. In BBSOAS patients with NR2F1 haploinsufficiency, polymicrogyria-like brain malformations occur in parietal/occipital cortex. In cerebral organoids, reduced NR2F1 levels affect neurogenesis and PAX6 expression.","method":"BBSOAS mouse model (Nr2f1 haploinsufficient), patient brain MRI, cerebral organoids (NR2F1 knockdown), cell cycle gene expression analysis","journal":"The EMBO journal","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple model systems (mouse, human patient brain, organoids) converge on NR2F1 regulation of Pax6 and cell cycle genes in neural progenitors","pmids":["32484994"],"is_preprint":false},{"year":2020,"finding":"NR2F1 expression is positively regulated by p38α signaling and repressed by HER2 and WNT4 pathways in early-stage breast cancer cells. Loss of NR2F1 function increases in vivo dissemination accompanied by decreased E-cadherin, activated WNT-dependent β-catenin signaling, disorganized laminin 5, and increased EMT genes (TWIST1, ZEB1, PRRX1), promoting a hybrid luminal/basal phenotype.","method":"High-resolution intravital imaging, NR2F1 loss-of-function, E-cadherin/β-catenin/laminin immunostaining, signaling pathway inhibitors (p38α, HER2, WNT4), gene expression analysis","journal":"Cancer research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — intravital imaging is high-resolution functional assay, signaling pathway identification relies on inhibitor/overexpression in single lab","pmids":["35471456"],"is_preprint":false},{"year":2021,"finding":"A specific small-molecule agonist (DIM-C-Pyr-4 derivative) of NR2F1 activates dormancy programs in malignant cells via a self-regulated increase in NR2F1 mRNA/protein and downstream transcription. This leads to growth arrest, inhibition of mTOR signaling, metastasis suppression, and induction of a neural crest lineage program. The effect is lost when NR2F1 is knocked out by CRISPR-Cas9.","method":"Small-molecule agonist treatment, CRISPR-Cas9 NR2F1 knockout (loss of function confirmation), RNA-seq, 3D culture assay, patient-derived organoids, in vivo mouse metastasis model, immunofluorescence (NR2F1hi/p27hi/Ki67lo phenotype)","journal":"The Journal of experimental medicine","confidence":"High","confidence_rationale":"Tier 2 / Strong — pharmacological activation combined with CRISPR genetic validation, RNA-seq pathway mapping, in vitro and in vivo models, multiple cell types","pmids":["34812843"],"is_preprint":false},{"year":2021,"finding":"LRRK2-G2019S mutation in Parkinson's disease decreases NR2F1 expression in neuroepithelial stem cells, neurons, and midbrain organoids. NR2F1-deficient mouse embryos show accelerated dopaminergic differentiation in vivo, suggesting NR2F1 normally restrains cell-cycle exit and differentiation timing in dopaminergic neurogenesis.","method":"Patient-specific NESCs (iPSC-derived), high-throughput image analysis, single-cell RNA sequencing, NR2F1-deficient mouse embryos, midbrain organoids","journal":"Cell reports","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — convergence of patient iPSC model and mouse KO model on NR2F1's role in differentiation timing, single lab","pmids":["34686322"],"is_preprint":false},{"year":2022,"finding":"METTL3 methylates NR2F1 mRNA in an m6A-dependent manner to regulate NR2F1 expression in retinal pigment epithelium cells. NR2F1 deficiency reverses the decreased Occludin expression and increased IL-6 secretion observed in METTL3-defective RPE cells, placing NR2F1 downstream of m6A modification by METTL3 in RPE inflammation regulation.","method":"MeRIP-sequencing (m6A mapping), RNA-seq, METTL3 silencing/NR2F1 silencing, Western blot (Occludin), ELISA (IL-6), rescue experiments","journal":"Frontiers in immunology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — MeRIP-seq identifies m6A site, rescue experiment establishes epistatic relationship (METTL3 upstream of NR2F1), single lab","pmids":["35936005"],"is_preprint":false},{"year":2023,"finding":"SETD2 inactivation reduces NR2F1 transcription by impairing H3K36me3 deposition and chromatin accessibility at the NR2F1 locus. Reduced NR2F1 activates the STAT1 signaling pathway to promote chemokines, PD-1 expression, and antigen presentation. ChIP-seq and ATAC-seq confirm the SETD2→H3K36me3→NR2F1 chromatin regulatory axis.","method":"ATAC-seq, ChIP-seq (H3K36me3), RNA-seq, single-cell RNA-seq, Setd2 knockout syngeneic mouse models, flow cytometry","journal":"Journal for immunotherapy of cancer","confidence":"High","confidence_rationale":"Tier 1-2 / Moderate — multiomics (ATAC-seq + ChIP-seq + RNA-seq) in same study establishes chromatin mechanism, syngeneic mouse model confirms in vivo relevance","pmids":["38056895"],"is_preprint":false},{"year":2007,"finding":"COUP-TFI activation of the vitronectin gene in P19 cells is accompanied by recruitment of thymine DNA glycosylase (TDG) and p68 RNA helicase. DNA methyltransferases Dnmt3a and Dnmt3b are loaded onto the activated vitronectin gene, with strand-biased decrease in CpG methylation. Dnmt3a co-immunoprecipitates with COUP-TFI and TDG in vivo; cotransfection shows Dnmt3a/b enhances COUP-TFI-mediated activation of a methylated reporter gene.","method":"ChIP (TDG, p68, Dnmt3a occupancy), bisulfite sequencing (CpG methylation), co-immunoprecipitation (Dnmt3a–COUP-TFI–TDG), cotransfection reporter assay","journal":"Molecular endocrinology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and co-IP provide mechanistic evidence for Dnmt3a–COUP-TFI interaction during gene activation, single lab","pmids":["17579209"],"is_preprint":false},{"year":2009,"finding":"COUP-TFI binds retinoic acid-responsive elements (RAREs) in the ceramide kinase (CERK) promoter and represses CERK transcription during ATRA-induced differentiation of SH-SY5Y neuroblastoma cells. EMSA shows ATRA-induced binding of COUP-TFI, RARα, and RXRα to the RARE. ChIP confirms recruitment of COUP-TFI and corepressors to this region. siRNA knockdown of COUP-TFI relieves CERK repression.","method":"EMSA, DNA pull-down, ChIP (COUP-TFI and corepressor recruitment), siRNA knockdown, promoter truncation/mutation assays","journal":"Journal of neurochemistry","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP confirms in vivo occupancy, siRNA loss-of-function confirms functional relevance, single lab","pmids":["19903244"],"is_preprint":false},{"year":2017,"finding":"COUP-TFI is required for proper hippocampal development along the septo-temporal longitudinal axis. Loss of cortical COUP-TFI results in dysmorphic hippocampus with altered shape, volume, and connectivity, particularly in dorsal and intermediate regions. Topographic entorhinal cortex inputs are strongly impaired in the dorsal hippocampus. These structural changes are associated with selective spatial learning and memory impairment.","method":"Cortical COUP-TFI conditional knockout, hippocampal volumetry/shape analysis, axon tracing, spatial memory behavioral testing (Morris water maze or equivalent)","journal":"Cerebral cortex","confidence":"High","confidence_rationale":"Tier 2 / Moderate — conditional loss-of-function with anatomical, connectivity, and behavioral readouts in same study, single lab","pmids":["26813976"],"is_preprint":false},{"year":2019,"finding":"COUP-TFI is required in dentate gyrus progenitors for modulating Cxcr4 receptor expression during granule cell neurogenesis and migration. Loss of COUP-TFI in progenitors leads to decreased granule cell proliferation, precocious differentiation, increased apoptosis, and high Cxcr4 expression with aberrant migration. High COUP-TFI expression downregulates Cxcr4. Increased Cxcr4 expression in wild-type cells phenocopies COUP-TFI loss-of-function migration defects.","method":"Conditional knockout (progenitor vs. postmitotic), gain-of-function Cxcr4 overexpression, immunostaining, proliferation and migration analysis","journal":"Development","confidence":"High","confidence_rationale":"Tier 2 / Moderate — conditional loss-of-function combined with Cxcr4 gain-of-function phenocopy establishes the regulatory axis with cell-type specificity","pmids":["28506990"],"is_preprint":false}],"current_model":"NR2F1/COUP-TFI is an orphan nuclear receptor transcriptional regulator that predominantly functions as a repressor by recruiting corepressors N-CoR and SMRT (via its C-terminal repressor domain) and assembling a complex with NCoR, HDAC1, TIF1β/KAP-1, Brahma, and DBC1; it binds nuclear receptor response elements (direct repeats, half-sites) and also interacts with ERα—enhancing ERα AF-1 activity through ERK2-mediated Ser118 phosphorylation—and with AHR. In neural development, NR2F1 acts as a graded intrinsic determinant of neocortical arealization (repressing frontal/motor identities, specifying sensory areas), controls the timing of neurogenic-to-gliogenic transition in neural stem cells, directs cortical interneuron subtype specification (CGE-derived VIP+/CR+ vs. MGE-derived PV+) partly by driving Sox6, promotes radial migration of callosal projection neurons by directly repressing Rnd2, regulates axonal growth via MAP1B/RND2, controls oligodendrocyte differentiation upstream of SCIP/Oct-6, modulates adult hippocampal neurogenesis vs. astrogliogenesis, and maintains activity-dependent TH expression in olfactory bulb dopaminergic neurons via ZIF268; its expression is epigenetically regulated by PRC2 (H3K27me3 attenuation of RA-induced transcription) and SETD2 (H3K36me3-dependent chromatin accessibility), and its mRNA is post-transcriptionally regulated by METTL3-mediated m6A modification; in cancer, NR2F1 is a central node for tumor cell dormancy by inducing SOX9/RARβ/CDK inhibitor/NANOG programs and is activated pharmacologically by a specific small-molecule agonist that induces dormancy and suppresses metastasis."},"narrative":{"mechanistic_narrative":"NR2F1 (COUP-TFI/EAR-3) is an orphan nuclear receptor that functions chiefly as a sequence-specific transcriptional repressor and a graded intrinsic determinant of neural cell-fate decisions [PMID:9171235, PMID:17828260]. It binds nuclear receptor response elements—direct repeats, half-sites, and RAREs—often competing with or displacing activating receptors such as HNF-4, RAR:RXR, and Nkx2.5 from shared sites to silence target promoters including ApoB/ApoCIII/ApoAII, Oct-3/4, MTTP, and calreticulin [PMID:1639815, PMID:7823919, PMID:11106640, PMID:22357705]. Its repressive output is executed through a C-terminal repressor domain that recruits the corepressors N-CoR and SMRT, and it nucleates a larger silencing complex containing NCoR, HDAC1, TIF1β/KAP-1, Brahma, and DBC1 [PMID:9171235, PMID:19112178]; in a context-dependent manner it can also activate transcription via the coactivators GRIP1/SRC-1 and cooperate with ERα, enhancing ERα AF-1 activity through ERK2-mediated Ser118 phosphorylation [PMID:10652338, PMID:12093745]. In neural development NR2F1 patterns the neocortex as a graded factor that represses frontal/motor identities and specifies sensory areas, controls neuronal birth timing and the neurogenic-to-gliogenic transition, directs cortical interneuron subtype specification partly by driving Sox6, and promotes radial migration of callosal projection neurons by directly repressing Rnd2 [PMID:17828260, PMID:19160499, PMID:28694260, PMID:21965613]. It governs axon growth and commissure formation through MAP1B/RND2, oligodendrocyte differentiation upstream of SCIP/Oct-6, adult hippocampal neurogenesis versus astrogliogenesis, and activity-dependent TH expression in olfactory dopaminergic neurons via ZIF268 [PMID:17021036, PMID:14738874, PMID:29996095, PMID:24227652]. NR2F1 dosage is itself tightly controlled epigenetically and post-transcriptionally—by PRC2/H3K27me3, SETD2/H3K36me3, and METTL3-mediated m6A modification [PMID:23666625, PMID:38056895, PMID:35936005]. In cancer, NR2F1 is a master node for disseminated tumor cell dormancy, inducing global chromatin repression and SOX9/RARβ/CDK-inhibitor/NANOG programs to enforce quiescence and suppress metastasis, an effect that can be triggered pharmacologically by a specific small-molecule agonist [PMID:25636082, PMID:34812843]. Heterozygous NR2F1 loss-of-function mutations cause Bosch-Boonstra-Schaaf optic atrophy syndrome (BBSOAS), with patient mutations in the DNA-binding and ligand-binding domains reducing transcriptional activity and haploinsufficiency producing cortical malformations linked to dysregulated self-renewal and Pax6 [PMID:24462372, PMID:32484994].","teleology":[{"year":1992,"claim":"Established that NR2F1 is a sequence-specific DNA-binding repressor that silences metabolic gene promoters by competing with activating receptors, defining its core biochemical mode of action.","evidence":"EMSA with quantified affinity, competition binding, and cotransfection reporter assays on ApoB/ApoCIII/ApoAII promoters in HepG2 cells","pmids":["1639815"],"confidence":"High","gaps":["Did not identify the corepressor machinery executing repression","Did not test endogenous chromatin occupancy"]},{"year":1995,"claim":"Showed NR2F1 represses Oct-3/4 by outcompeting RAR:RXR at a shared RAREoct element and that retinoic acid upregulates NR2F1, linking it to RA-driven differentiation programs.","evidence":"EMSA competition, reporter assays, and C-terminal deletion mutagenesis in P19 embryonal carcinoma cells","pmids":["7823919"],"confidence":"High","gaps":["Mechanism of how RA induces NR2F1 not resolved","Corepressor identity at the locus not defined"]},{"year":1997,"claim":"Defined the molecular basis of repression by mapping a C-terminal repressor domain that binds the corepressors N-CoR and SMRT, shared with unliganded TRβ.","evidence":"Yeast two-hybrid, GST pull-down, squelching/repression assays, deletion mutagenesis","pmids":["9171235"],"confidence":"High","gaps":["Did not show the full multiprotein complex in cells","Did not establish target gene specificity in vivo"]},{"year":2000,"claim":"Revealed NR2F1's dual activator capacity and its physical/regulatory cross-talk with ERα, AHR, and ERRα1, extending it beyond pure repression.","evidence":"In vitro protein interaction assays, co-IP, EMSA on XRE, reporter assays in CV-1/MCF-7 cells; coactivator (GRIP1/SRC-1) co-IP and domain mapping","pmids":["10620335","10652338"],"confidence":"Medium","gaps":["Interaction interfaces not structurally resolved","Physiological relevance of AHR competition untested in vivo"]},{"year":1999,"claim":"Demonstrated NR2F1 is an intrinsic cortical patterning factor required for subplate neuron differentiation and thalamocortical innervation, beginning the neural developmental program.","evidence":"Coup-tf1 null mouse knockout with histology and axon tracing","pmids":["10624948"],"confidence":"High","gaps":["Direct transcriptional targets in subplate not identified","Cell-autonomous vs non-autonomous contributions unresolved at this stage"]},{"year":2001,"claim":"Showed NR2F1 acts thalamus-independently as an intrinsic arealization determinant working with Pax6 and Emx2 to specify neocortical identity.","evidence":"COUP-TFI null mouse, region-specific marker analysis, axon tracing","pmids":["11511537"],"confidence":"High","gaps":["Direct downstream area-identity genes not yet mapped","Graded dosage mechanism not yet demonstrated"]},{"year":2007,"claim":"Established NR2F1 as a graded determinant balancing frontal/motor versus sensory area identity and a regulator of progenitor cell-cycle exit, linking arealization to proliferation control.","evidence":"Cortex-specific conditional knockout with marker and axonal tracing; LOF/GOF with pERK/pAKT/β-catenin readouts","pmids":["17828260","18165280"],"confidence":"High","gaps":["Signaling repression (#18165280) inferred from expression, not direct biochemistry","Direct target genes of arealization repression incompletely defined"]},{"year":2010,"claim":"Identified Fabp7 as a directly bound and chromatin-state-controlled NR2F1 target via genome-scale ChIP integration, providing in vivo target validation.","evidence":"Microarray (KO vs WT), computational site prediction, in vivo/in vitro ChIP, chromatin mark analysis, Western blot","pmids":["20111703"],"confidence":"High","gaps":["Genome-wide direct target set still incomplete","Single-tissue (inner ear) ChIP limits generality"]},{"year":2010,"claim":"Resolved how NR2F1 controls neuronal birth timing and axonal/migration programs, repressing the corticospinal motor neuron program and directly repressing Rnd2 to enable radial migration.","evidence":"Conditional knockouts with axon tracing, behavior, and in utero electroporation Rnd2 rescue","pmids":["20133588","21965613","17021036"],"confidence":"High","gaps":["Whether Rnd2/MAP1B are the sole effectors of migration phenotypes unclear","Direct binding at the Rnd2 promoter not fully mapped"]},{"year":2011,"claim":"Demonstrated NR2F1 specifies cortical interneuron subtype identity (CGE-derived VIP+/CR+ vs MGE-derived PV+), later shown to act partly by directly driving Sox6.","evidence":"Conditional knockouts, subtype marker analysis, pharmacological seizure assays; MGE-progenitor cKO with Sox6 analysis","pmids":["21430164","28694260"],"confidence":"High","gaps":["Direct vs indirect regulation of Sox6 not biochemically confirmed","Redundancy with NR2F2 not fully partitioned"]},{"year":2008,"claim":"Defined the in-cell NR2F1 repressor complex (NCoR/HDAC1/KAP-1/Brahma/DBC1) and a function in TNFα signaling via TNFAIP8 repression, and established NR2F1/NR2F2 as a switch for the neurogenic-to-gliogenic transition.","evidence":"Tandem affinity purification and in vitro binding for the complex; double shRNA knockdown in ESC-derived NSPCs and forebrain for the temporal switch","pmids":["19112178","19160499"],"confidence":"High","gaps":["Stoichiometry and assembly order of the complex unresolved","Mechanism coupling the complex to gliogenic competence not defined"]},{"year":2013,"claim":"Showed NR2F1 dosage is itself epigenetically tuned by PRC2 and embedded in reciprocal cortical regulatory circuits, including with Sp8, and drives an activity-dependent ZIF268→TH axis in olfactory neurons.","evidence":"Suz12 shRNA + ChIP for PRC2; transgenic/conditional Sp8 manipulation; conditional and lentiviral cell-autonomous NR2F1 deletion with odor deprivation","pmids":["23666625","23307639","24227652"],"confidence":"Medium","gaps":["Whether PRC2 acts directly or indirectly on NR2F1 in vivo unresolved","ZIF268 as the sole intermediary to TH not excluded"]},{"year":2014,"claim":"Linked NR2F1 to human disease (BBSOAS) by demonstrating patient missense mutations in the DNA-binding and ligand-binding domains reduce transcriptional activity.","evidence":"Luciferase reporter assays with patient-derived mutant constructs","pmids":["24462372"],"confidence":"Medium","gaps":["Cell-based assay does not capture neural-specific consequences","Dominant-negative vs haploinsufficiency mechanism not distinguished here"]},{"year":2015,"claim":"Identified NR2F1 as a master inducer of disseminated tumor cell dormancy, enforcing quiescence through global chromatin repression and a SOX9/RARβ/CDK-inhibitor/NANOG program.","evidence":"In vitro/in vivo dormancy models, 5-Aza-C+RA co-treatment, knockdown/overexpression, ChIP, patient bone marrow DTC analysis","pmids":["25636082"],"confidence":"High","gaps":["Direct genomic targets driving chromatin repression incompletely mapped","Signals upstream that activate NR2F1 in DTCs not defined here"]},{"year":2018,"claim":"Established NR2F1 as necessary and sufficient to bias adult hippocampal NSCs toward neurogenesis over astrogliogenesis, including rescue under neuroinflammation.","evidence":"Inducible cKO, retroviral LOF, fate mapping, GOF overexpression, neuroinflammation model","pmids":["29996095"],"confidence":"High","gaps":["Transcriptional targets controlling the neuro/astroglial switch not identified","Mechanism of neuroinflammation rescue unresolved"]},{"year":2019,"claim":"Resolved how NR2F1 expression boundaries are set by the Egr→Foxg1 enhancer circuit and how NR2F1 controls hippocampal neurogenesis/migration via Cxcr4, plus its broader role in hippocampal structure and spatial memory.","evidence":"ChIP at H3K4me1 enhancer, in utero electroporation, conditional knockouts; progenitor cKO with Cxcr4 GOF phenocopy; cortical cKO with volumetry, tracing, and behavior","pmids":["31395862","28506990","26813976"],"confidence":"High","gaps":["Direct NR2F1 binding at Cxcr4 not shown","Behavioral deficits not mechanistically tied to a single target"]},{"year":2020,"claim":"Connected NR2F1 dosage to BBSOAS pathology by showing haploinsufficiency disrupts neural progenitor self-renewal and Pax6, and to breast cancer dissemination through p38α/HER2/WNT4 control and EMT suppression.","evidence":"Haploinsufficient mouse, patient MRI, cerebral organoids; intravital imaging, LOF, pathway inhibitors, EMT/E-cadherin/β-catenin analysis","pmids":["32484994","35471456"],"confidence":"Medium","gaps":["Direct vs indirect regulation of Pax6 unresolved","Upstream signaling links to NR2F1 (#35471456) rely on inhibitor/overexpression in single lab"]},{"year":2021,"claim":"Demonstrated NR2F1 is pharmacologically actionable—a small-molecule agonist self-amplifies NR2F1 to enforce dormancy, inhibit mTOR, and suppress metastasis—and that NR2F1 restrains dopaminergic differentiation timing relevant to Parkinson's disease.","evidence":"Agonist treatment with CRISPR-Cas9 KO validation, RNA-seq, organoids, in vivo metastasis; LRRK2-G2019S iPSC NESCs, scRNA-seq, NR2F1-deficient mouse embryos, midbrain organoids","pmids":["34812843","34686322"],"confidence":"High","gaps":["Direct molecular target/binding mode of the agonist not defined","How LRRK2-G2019S lowers NR2F1 mechanistically unresolved"]},{"year":2023,"claim":"Showed multilayered control of NR2F1 mRNA/chromatin (METTL3 m6A, SETD2/H3K36me3) couples NR2F1 dosage to epithelial integrity, inflammation, and STAT1-driven immune signaling.","evidence":"MeRIP-seq and rescue in RPE cells; ATAC-seq/ChIP-seq/RNA-seq with Setd2-KO syngeneic mouse models","pmids":["35936005","38056895"],"confidence":"Medium","gaps":["Which m6A reader transduces the METTL3 effect not identified","Direct NR2F1 targets in STAT1 axis not fully mapped"]},{"year":null,"claim":"How NR2F1's ligand-binding domain is regulated (true ligand vs constitutive activity) and how it switches between repressor and activator modes across cell contexts remains unresolved.","evidence":"","pmids":[],"confidence":"Low","gaps":["No endogenous ligand defined despite agonist responsiveness","Determinants of corepressor vs coactivator recruitment context not established","Genome-wide direct target maps across neural and tumor states incomplete"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[0,1,2,5,8,29]},{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[1,2,23,24,28]},{"term_id":"GO:0098772","term_label":"molecular function regulator activity","supporting_discovery_ids":[14,21]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[0,8,23]}],"pathway":[{"term_id":"R-HSA-74160","term_label":"Gene expression (Transcription)","supporting_discovery_ids":[0,1,8,23]},{"term_id":"R-HSA-1266738","term_label":"Developmental Biology","supporting_discovery_ids":[4,5,7,12,17,30]},{"term_id":"R-HSA-1643685","term_label":"Disease","supporting_discovery_ids":[28,29,34,36]},{"term_id":"R-HSA-4839726","term_label":"Chromatin organization","supporting_discovery_ids":[25,29,39]}],"complexes":["NCoR/HDAC1/KAP-1/Brahma/DBC1 corepressor complex"],"partners":["NCOR1","NCOR2","HDAC1","TRIM28","CCAR2","ESR1","AHR","NCOA2"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"P10589","full_name":"COUP transcription factor 1","aliases":["COUP transcription factor I","COUP-TF I","Nuclear receptor subfamily 2 group F member 1","V-erbA-related protein 3","EAR-3"],"length_aa":423,"mass_kda":46.2,"function":"Coup (chicken ovalbumin upstream promoter) transcription factor binds to the ovalbumin promoter and, in conjunction with another protein (S300-II) stimulates initiation of transcription. Binds to both direct repeats and palindromes of the 5'-AGGTCA-3' motif. Represses transcriptional activity of LHCG","subcellular_location":"Nucleus","url":"https://www.uniprot.org/uniprotkb/P10589/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/NR2F1","classification":"Not Classified","n_dependent_lines":2,"n_total_lines":1208,"dependency_fraction":0.0016556291390728477},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/NR2F1","total_profiled":1310},"omim":[{"mim_id":"615722","title":"BOSCH-BOONSTRA-SCHAAF OPTIC ATROPHY SYNDROME; BBSOAS","url":"https://www.omim.org/entry/615722"},{"mim_id":"612881","title":"CHROMOSOME 5q14.3 DELETION SYNDROME, DISTAL","url":"https://www.omim.org/entry/612881"},{"mim_id":"604566","title":"ALG6 ALPHA-1,3-GLUCOSYLTRANSFERASE; ALG6","url":"https://www.omim.org/entry/604566"},{"mim_id":"602410","title":"BROMODOMAIN- AND PHD FINGER-CONTAINING PROTEIN; BRPF1","url":"https://www.omim.org/entry/602410"},{"mim_id":"182205","title":"SEX HORMONE-BINDING GLOBULIN; SHBG","url":"https://www.omim.org/entry/182205"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Approved","locations":[{"location":"Nucleoplasm","reliability":"Approved"},{"location":"Cytosol","reliability":"Additional"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in many","driving_tissues":[],"url":"https://www.proteinatlas.org/search/NR2F1"},"hgnc":{"alias_symbol":["EAR-3","COUP-TFI","TCFCOUP1","SVP44","COUPTF1"],"prev_symbol":["ERBAL3","TFCOUP1"]},"alphafold":{"accession":"P10589","domains":[{"cath_id":"3.30.50.10","chopping":"94-154","consensus_level":"high","plddt":95.3128,"start":94,"end":154},{"cath_id":"1.10.565.10","chopping":"183-198_214-411","consensus_level":"high","plddt":90.6126,"start":183,"end":411}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/P10589","model_url":"https://alphafold.ebi.ac.uk/files/AF-P10589-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-P10589-F1-predicted_aligned_error_v6.png","plddt_mean":75.25},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=NR2F1","jax_strain_url":"https://www.jax.org/strain/search?query=NR2F1"},"sequence":{"accession":"P10589","fasta_url":"https://rest.uniprot.org/uniprotkb/P10589.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/P10589/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/P10589"}},"corpus_meta":[{"pmid":"25636082","id":"PMC_25636082","title":"NR2F1 controls tumour cell dormancy via SOX9- and RARβ-driven quiescence programmes.","date":"2015","source":"Nature communications","url":"https://pubmed.ncbi.nlm.nih.gov/25636082","citation_count":299,"is_preprint":false},{"pmid":"1639815","id":"PMC_1639815","title":"Transcriptional regulation of human apolipoprotein genes ApoB, ApoCIII, and ApoAII by members of the steroid hormone receptor superfamily HNF-4, ARP-1, EAR-2, and EAR-3.","date":"1992","source":"The Journal of biological chemistry","url":"https://pubmed.ncbi.nlm.nih.gov/1639815","citation_count":285,"is_preprint":false},{"pmid":"19160499","id":"PMC_19160499","title":"Requirement for COUP-TFI and II in the temporal specification of neural stem cells in CNS development.","date":"2008","source":"Nature neuroscience","url":"https://pubmed.ncbi.nlm.nih.gov/19160499","citation_count":189,"is_preprint":false},{"pmid":"17828260","id":"PMC_17828260","title":"COUP-TFI regulates the balance of cortical patterning between frontal/motor and sensory areas.","date":"2007","source":"Nature neuroscience","url":"https://pubmed.ncbi.nlm.nih.gov/17828260","citation_count":188,"is_preprint":false},{"pmid":"10624948","id":"PMC_10624948","title":"The nuclear orphan receptor COUP-TFI is required for differentiation of subplate neurons and guidance of thalamocortical axons.","date":"1999","source":"Neuron","url":"https://pubmed.ncbi.nlm.nih.gov/10624948","citation_count":156,"is_preprint":false},{"pmid":"9171235","id":"PMC_9171235","title":"Gene silencing by chicken ovalbumin upstream promoter-transcription factor I (COUP-TFI) is mediated by transcriptional corepressors, nuclear receptor-corepressor (N-CoR) and silencing mediator for retinoic acid receptor and thyroid hormone receptor (SMRT).","date":"1997","source":"Molecular endocrinology (Baltimore, Md.)","url":"https://pubmed.ncbi.nlm.nih.gov/9171235","citation_count":152,"is_preprint":false},{"pmid":"11511537","id":"PMC_11511537","title":"COUP-TFI: an intrinsic factor for early regionalization of the neocortex.","date":"2001","source":"Genes & development","url":"https://pubmed.ncbi.nlm.nih.gov/11511537","citation_count":144,"is_preprint":false},{"pmid":"29602203","id":"PMC_29602203","title":"LncRNA NR2F1-AS1 regulates hepatocellular carcinoma oxaliplatin resistance by targeting ABCC1 via miR-363.","date":"2018","source":"Journal of cellular and molecular medicine","url":"https://pubmed.ncbi.nlm.nih.gov/29602203","citation_count":138,"is_preprint":false},{"pmid":"7823919","id":"PMC_7823919","title":"A dynamic balance between ARP-1/COUP-TFII, EAR-3/COUP-TFI, and retinoic acid receptor:retinoid X receptor heterodimers regulates Oct-3/4 expression in embryonal carcinoma cells.","date":"1995","source":"Molecular and cellular biology","url":"https://pubmed.ncbi.nlm.nih.gov/7823919","citation_count":138,"is_preprint":false},{"pmid":"18165280","id":"PMC_18165280","title":"COUP-TFI coordinates cortical patterning, neurogenesis, and laminar fate and modulates 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Derivative.","date":"2019","source":"Cells","url":"https://pubmed.ncbi.nlm.nih.gov/30866413","citation_count":14,"is_preprint":false}],"cost":{"stage1":{"model":"claude-sonnet-4-6","input_tokens":52931,"output_tokens":12021,"usd":0.169554,"stage1_stop_reason":"end_turn"},"stage2":{"model":"claude-opus-4-8","input_tokens":23233,"output_tokens":6384,"usd":0.137882,"stage2_stop_reason":"end_turn"},"total_usd":0.307436,"stage1_batch_id":"msgbatch_013a8chtv3AWyTqv4z4sEF4C","stage2_batch_id":"msgbatch_01AHsuW63vinsvuTgzmQ3n62","note":"batch pricing = 50% of standard"},"stage1_raw":"```json\n{\n  \"discoveries\": [\n    {\n      \"year\": 1997,\n      \"finding\": \"COUP-TFI (NR2F1) represses transcription via direct interaction with corepressors N-CoR and SMRT. The C-terminal 35 amino acids of COUP-TFI constitute a repressor domain required for silencing activity. COUP-TFI and unliganded TRβ share common corepressors, demonstrated by squelching experiments and yeast two-hybrid/GST pull-down assays showing direct binding to N-CoR (aa 921-2453) and SMRT fragments.\",\n      \"method\": \"Yeast two-hybrid, GST pull-down, cotransfection repression/squelching assays, deletion mutagenesis\",\n      \"journal\": \"Molecular endocrinology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Strong — reconstitution via GST pull-down, yeast two-hybrid, and functional mutagenesis all in one study with clear domain mapping\",\n      \"pmids\": [\"9171235\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1992,\n      \"finding\": \"EAR-3/COUP-TFI binds specifically to regulatory elements BA1, CIIIB, and AIIJ in the ApoB, ApoCIII, and ApoAII gene promoters with Kd 1–3 nM, and represses transcription from these elements in cotransfection experiments in HepG2 cells. EAR-3 can compete with and displace HNF-4 from the same elements to suppress transcription.\",\n      \"method\": \"EMSA (dissociation constant measurement), cotransfection reporter assays in HepG2 cells, competition binding assays\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Strong — direct binding with quantified affinity, functional transcription assays, competition experiments replicated across multiple target genes\",\n      \"pmids\": [\"1639815\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1995,\n      \"finding\": \"EAR-3/COUP-TFI represses Oct-3/4 promoter activity through the RAREoct site in P19 embryonal carcinoma cells in a dose-dependent manner via the C-terminal domain. COUP-TFI binds RAREoct with higher affinity than RAR:RXR heterodimers, allowing it to compete with and displace RAR:RXR from the site, actively silencing Oct-3/4 promoter activity. RA treatment of EC cells upregulates COUP-TFI expression, which inversely correlates with Oct-3/4 repression.\",\n      \"method\": \"Cotransfection reporter assays, EMSA competition/binding assays, deletion mutagenesis of C-terminal domain\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Strong — direct DNA binding competition assays, functional reporter assays with domain mapping, and kinetic correlation in multiple cell contexts\",\n      \"pmids\": [\"7823919\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1999,\n      \"finding\": \"Loss of COUP-TFI in mouse cortex results in absence of cortical layer IV due to failure of thalamocortical projections, and subplate neurons undergo improper differentiation and premature cell death. COUP-TFI is required for subplate neuron differentiation which in turn guides thalamocortical axon innervation.\",\n      \"method\": \"Coup-tf1 null mouse knockout, histology, axon tracing\",\n      \"journal\": \"Neuron\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — clean genetic loss-of-function with defined cellular phenotypes and mechanistic pathway placement (subplate → thalamocortical guidance)\",\n      \"pmids\": [\"10624948\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2001,\n      \"finding\": \"COUP-TFI acts as an intrinsic factor for early regionalization of the neocortex, independent of thalamic input. COUP-TFI null mice show altered region-specific expression of cortical marker genes and miswired area-specific thalamocortical connections, indicating COUP-TFI works in concert with Pax6 and Emx2 to specify neocortical identity.\",\n      \"method\": \"COUP-TFI null mouse knockout, marker gene expression analysis, axon tracing\",\n      \"journal\": \"Genes & development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic loss-of-function with molecular and anatomical readouts, epistasis with Pax6/Emx2\",\n      \"pmids\": [\"11511537\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"Cortex-specific deletion of COUP-TFI in mice causes massive expansion of frontal/motor areas and compression of sensory areas. COUP-TFI acts within its expression domain (highest in parietal/occipital, lowest in frontal cortex) to repress frontal/motor area identities and specify sensory area identities, demonstrating it is required for balancing neocortical arealization.\",\n      \"method\": \"Cortex-specific conditional knockout (Cre-lox), molecular marker analysis, axonal projection tracing\",\n      \"journal\": \"Nature neuroscience\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — conditional loss-of-function with multiple orthogonal readouts (molecular markers, axonal projections, area-specific gene expression)\",\n      \"pmids\": [\"17828260\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"COUP-TFI loss-of-function and gain-of-function manipulations show it promotes ventral cortical fate, promotes cell cycle exit and neural differentiation, and regulates the balance of early- and late-born neurons, in part by repressing MAPK/ERK, AKT, and β-catenin signaling in cortical progenitors.\",\n      \"method\": \"Loss-of-function and gain-of-function in vivo and in vitro, signaling pathway readouts (pERK, pAKT, β-catenin)\",\n      \"journal\": \"Cerebral cortex\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic manipulation with pathway readouts in single lab, signaling pathway link inferred from expression changes rather than direct biochemical interaction\",\n      \"pmids\": [\"18165280\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"COUP-TFI (and COUP-TFII) are required for temporal specification of neural stem/progenitor cells in the CNS, including acquisition of gliogenic competence. Double knockdown of Coup-tfI/II in ESC-derived NSPCs and developing mouse forebrain causes sustained neurogenesis and prolonged generation of early-born neurons, demonstrating these factors function as molecular switches for the neurogenic-to-gliogenic transition.\",\n      \"method\": \"Double shRNA knockdown in ESC-derived NSPCs and in vivo mouse forebrain, cell fate marker analysis, gliogenic cytokine responsiveness assays\",\n      \"journal\": \"Nature neuroscience\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — double-gene knockdown in two independent systems (ESC-derived and in vivo) with defined cellular phenotype\",\n      \"pmids\": [\"19160499\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"COUP-TFI forms a transcriptional repressor complex with NCoR, TIF1β/KAP-1, HDAC1, SWI/SNF member Brahma, and DBC1 in HeLa cells. Tandem affinity purification identified these components. COUP-TFI interacts directly with NCoR in a manner different from other nuclear receptors; DBC1 stabilizes the COUP-TFI–NCoR interaction. This complex represses TNFAIP8 transcription and is involved in TNFα signaling.\",\n      \"method\": \"Tandem affinity purification (TAP), in vitro binding assays, cotransfection reporter assays, TNFAIP8 promoter analysis\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Moderate — TAP-MS identifies complex components, in vitro direct binding assays confirm specific interactions, functional reporter assays in single lab\",\n      \"pmids\": [\"19112178\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"COUP-TFI is required for axonal growth and guidance of forebrain commissures (corpus callosum, hippocampal commissure, anterior commissure). In COUP-TFI null mice, fibers fail to cross the midline. Microarray analysis of COUP-TFI null cortex reveals decreased MAP1B and increased RND2 protein levels, identifying these cytoskeleton regulators as downstream effectors of COUP-TFI in axonal morphogenesis.\",\n      \"method\": \"COUP-TFI null mouse knockout, axon tracing, microarray expression profiling, primary hippocampal neuron culture, Western blot\",\n      \"journal\": \"Development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic loss-of-function with multiple mechanistic readouts (axon tracing, transcriptome, protein-level validation in vivo and in vitro)\",\n      \"pmids\": [\"17021036\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"COUP-TFI controls timing of birth and specification of corticospinal motor neurons (CSMN) in somatosensory cortex by repressing a CSMN differentiation program. Loss of COUP-TFI causes premature area-specific generation of neurons with CSMN features that project to subcerebral structures, while genuine CSMN fail to project beyond the pons, resulting in impaired skilled motor function.\",\n      \"method\": \"Conditional cortical COUP-TFI knockout, axon tracing, motor behavior assays, molecular marker analysis\",\n      \"journal\": \"PNAS\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — conditional loss-of-function with area-specific cellular phenotype, anatomical tracing, and behavioral readout in same study\",\n      \"pmids\": [\"20133588\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"COUP-TFI is required for specification of CGE-derived cortical interneurons. Conditional loss of COUP-TFI in subventricular precursors and postmitotic cells leads to decreased late-born VIP+ and CR+ bipolar neurons and compensatory increase of early-born PV+ MGE-derived interneurons. COUP-TFI mutants are more resistant to pharmacologically induced seizures in a GABAergic signaling-dependent manner.\",\n      \"method\": \"Conditional knockout (subventricular precursor and postmitotic), interneuron subtype marker analysis, pharmacological seizure induction\",\n      \"journal\": \"The Journal of neuroscience\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — conditional loss-of-function with cell-type-specific markers and pharmacological functional readout\",\n      \"pmids\": [\"21430164\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"COUP-TFI directly represses Rnd2 (a Rho-GTPase modulator of radial migration) expression at the post-mitotic level along the rostrocaudal axis of the neocortex. In COUP-TFI mutant mice, callosal projection neurons are delayed in reaching the cortical plate and have morphological defects. Restoring correct Rnd2 levels cell-autonomously rescues neuron radial migration and morphological transitions as well as axonal elongation and dendritic arborization defects.\",\n      \"method\": \"COUP-TFI conditional knockout, in utero electroporation rescue (Rnd2 shRNA), immunostaining, axon/dendrite morphology analysis\",\n      \"journal\": \"Development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic loss-of-function combined with cell-autonomous rescue experiment targeting specific downstream effector\",\n      \"pmids\": [\"21965613\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"COUP-TFI interacts directly with ERα (estrogen receptor alpha), COUP-TF, and ERRα1 in a ligand-dependent manner in vitro. AHR interacts with COUP-TFI in transfected CV-1 cells. COUP-TFI binds consensus xenobiotic response elements (XRE), and overexpression of COUP-TFI inhibits TCDD-activated CYP1A1 promoter reporter activity, suggesting COUP-TFI regulates AHR action via DNA binding competition and protein-protein interaction.\",\n      \"method\": \"In vitro protein-protein interaction assays, transfection in CV-1 cells, EMSA (XRE binding), reporter assay in MCF-7 cells\",\n      \"journal\": \"Archives of biochemistry and biophysics\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 / Moderate — direct binding demonstrated in vitro, confirmed in cell transfection, functional reporter assay, but limited mechanistic depth on the interaction interface\",\n      \"pmids\": [\"10620335\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2002,\n      \"finding\": \"COUP-TFI forms a tight physical complex with human ERα. This complex increases the affinity of ERα for ERK2/p42MAPK, resulting in enhanced phosphorylation of hERα Ser118 and strengthened AF-1 transactivation activity. The cooperation is restricted to cell lines permissive to ERα AF-1 activation.\",\n      \"method\": \"Co-immunoprecipitation (complex formation), kinase assay (Ser118 phosphorylation), transfection in multiple cell lines, functional reporter assays\",\n      \"journal\": \"The EMBO journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal co-IP demonstrates complex, kinase assay shows functional consequence (Ser118 phosphorylation), confirmed in multiple cell lines\",\n      \"pmids\": [\"12093745\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"EAR3/COUP-TFI represses LHR gene transcription via a mechanism involving cross-talk among EAR3, Sp1/Sp3 bound at the Sp1(I) site, and TFIIB. EAR3 specifically decreases association of TFIIB with the Sp1(I) site and reduces RNA polymerase II recruitment to the LHR promoter. Overexpression of TFIIB counteracts EAR3-mediated inhibition. EAR3's N-terminal and DNA-binding domains are required for Sp1 interaction and inhibitory function.\",\n      \"method\": \"Cotransfection reporter assays (SL2 cells), ChIP (RNA pol II recruitment), EMSA/co-IP (TFIIB-Sp1 interaction), deletion mutagenesis\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Moderate — ChIP demonstrates mechanistic consequence at the endogenous promoter level, combined with reporter assays and direct protein interaction studies\",\n      \"pmids\": [\"12972613\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"COUP-TF1 represses HBV pregenomic RNA and pre-C RNA synthesis >10-fold through nuclear receptor response elements NRREpreC and NRREenhI. HNF4α and COUP-TF1 antagonize each other's effects on HBV gene expression and viral DNA synthesis. A naturally occurring HBV variant that prevents COUP-TF1 binding but retains HNF4α binding shows significantly higher pregenomic RNA and viral DNA synthesis.\",\n      \"method\": \"Cotransfection in Huh7 cells, viral RNA quantification, viral DNA synthesis assay, natural variant analysis, deletion analysis\",\n      \"journal\": \"Journal of virology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — functional reporter and viral replication assays in one cell line, natural variant provides additional mechanistic evidence, single lab\",\n      \"pmids\": [\"12551987\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2004,\n      \"finding\": \"COUP-TFI is expressed in oligodendrocyte lineage cells and is required for oligodendrocyte differentiation and CNS myelination. COUP-TFI null mice show delayed axon myelination and increased dysmyelination. In vitro differentiation assays confirm myelination defects are due to delayed oligodendrocyte differentiation. COUP-TFI acts as an upstream regulator of SCIP/Oct-6/Tst-1, a transcription factor involved in axon myelination.\",\n      \"method\": \"COUP-TFI null mouse knockout, in vitro oligodendrocyte differentiation assay, in situ hybridization, transfection analysis\",\n      \"journal\": \"Developmental biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic loss-of-function with in vitro rescue confirmation, upstream regulatory relationship established by transfection\",\n      \"pmids\": [\"14738874\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"COUP-TFI inhibits BMP-4 1A promoter activity in fetal rat calvarial osteoblasts. Specific binding of COUP-TFI to response regions in the BMP-4 1A 5'-flanking region was demonstrated, and co-transfection of a COUP-TFI expression plasmid with the BMP-4 1A promoter construct showed COUP-TFI silences BMP-4 transcription.\",\n      \"method\": \"EMSA (specific binding to promoter elements), cotransfection reporter assay in primary osteoblasts\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 / Moderate — direct DNA binding by EMSA and functional reporter assay in relevant cell type, single lab\",\n      \"pmids\": [\"7499338\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"COUP-TFI binds the Nkx2.5 binding site in the calreticulin gene promoter and suppresses calreticulin transcription during cardiac development. Nkx2.5 activates calreticulin gene expression while COUP-TF1 binding to the same site antagonizes Nkx2.5-mediated activation.\",\n      \"method\": \"Cotransfection reporter assays, DNA binding assays, promoter analysis\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 / Moderate — functional reporter and DNA binding assays in relevant cardiac context, single lab\",\n      \"pmids\": [\"11106640\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"In differentiating P19 cells, COUP-TFI dose-dependently regulates neuronal differentiation and migration. Low COUP-TFI enhances neuron outgrowth; high COUP-TFI impedes neuronal differentiation and elevates E-cadherin mRNA. Dominant-negative COUP-TFI inhibits neurite extension. COUP-TFI favors neuron migration through an integrin-dependent mechanism and upregulates vitronectin mRNA and promoter activity.\",\n      \"method\": \"Stable and transient transfection in P19 cells, dominant-negative approach, RGD peptide interference assay, RT-PCR, transient transfection reporter assay (vitronectin promoter)\",\n      \"journal\": \"Molecular endocrinology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 / Moderate — multiple complementary approaches in one study, dose-response and dominant-negative experiments establish specificity\",\n      \"pmids\": [\"11117523\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2000,\n      \"finding\": \"COUP-TFI (as a transactivator) requires amino acids 184-423 for all three mechanisms of transcriptional activation: binding to gAF1/gAF3 accessory elements, direct DNA binding transactivation, and coactivation through DNA-bound HNF-4. GRIP1 and SRC-1 potentiate COUP-TFI activity and associate with COUP-TFI in vivo via this same region.\",\n      \"method\": \"Deletion mutagenesis, cotransfection reporter assays, in vivo co-immunoprecipitation with GRIP1/SRC-1\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — domain mapping combined with in vivo co-IP for coactivator interaction, single lab\",\n      \"pmids\": [\"10652338\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"COUP-TFI controls Notch signaling in cochlear development. COUP-TFI knockout mice show increased hair cell number and misregulation of Notch components including Jag1 and Hes5, consistent with reduced Notch signaling. Inhibition of Notch activity by γ-secretase inhibitor causes greater increase in hair cell differentiation in COUP-TFI(-/-) than wild-type cochlear cultures, indicating hypersensitivity to Notch inactivation in COUP-TFI null cochlea.\",\n      \"method\": \"COUP-TFI knockout mouse, in vitro organ culture with γ-secretase inhibitor, Notch target gene expression analysis\",\n      \"journal\": \"Development\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic loss-of-function combined with pharmacological intervention in organ culture, pathway epistasis established\",\n      \"pmids\": [\"16914494\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"Genome-wide identification of direct COUP-TFI target genes using integration of microarray data and COUP-TFI ChIP. Fabp7 is a direct COUP-TFI target: COUP-TFI occupies conserved binding sites in the Fabp7 promoter in vivo (ChIP), Fabp7 transcript and protein are reduced in COUP-TFI null tissues, and the Fabp7 promoter shows active chromatin marks (H3K9ac, CBP, SRC-1 enrichment) dependent on COUP-TFI.\",\n      \"method\": \"Microarray (COUP-TFI KO vs WT inner ear), computational binding site prediction, ChIP (in vivo and in vitro), Western blot, chromatin state analysis\",\n      \"journal\": \"PloS one\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Moderate — ChIP validates in vivo occupancy, expression changes confirmed at transcript and protein level, active chromatin marks defined, single lab multiple orthogonal methods\",\n      \"pmids\": [\"20111703\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"NR2F1 represses MTTP gene expression by binding to a direct repeat 1 (DR1) element in the MTTP promoter, which suppresses synergistic activation by HNF-4α and HNF-1α. This repression is further enhanced by nuclear receptor corepressor 1 (NCoR1). NR2F1 does not alter individual activities of HNF-4α or HNF-1 but specifically abrogates their synergistic cooperation.\",\n      \"method\": \"Cotransfection reporter assays, EMSA (DR1 binding), corepressor overexpression\",\n      \"journal\": \"Journal of lipid research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 / Moderate — direct DNA binding by EMSA, functional reporter assays with mechanistic specificity (synergy abrogation), single lab\",\n      \"pmids\": [\"22357705\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"PRC2 (specifically Suz12-dependent) is recruited to the NR2F1 promoter upon retinoic acid treatment, transiently increasing H3K27me3 marks and attenuating RA-induced NR2F1 transcription. Functional depletion of Suz12 by shRNA enhances RA-associated NR2F1 transcription, identifying PRC2 as a repressive modulator of NR2F1 expression.\",\n      \"method\": \"shRNA depletion of Suz12, RT-PCR, ChIP (H3K27me3, PRC2 occupancy), comparison with Hoxa5 gene\",\n      \"journal\": \"Nucleic acids research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP confirms PRC2 recruitment and H3K27me3 at NR2F1 promoter, shRNA functional test, single lab\",\n      \"pmids\": [\"23666625\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"COUP-TFI and Sp8 reciprocally repress each other's expression in cortical progenitors. Misexpression of Sp8 represses COUP-TFI, and conditional ablation of Sp8 has the opposite effect. Transgenic misexpression of COUP-TFI downregulates Sp8. Sp8 promotes FGF target molecule expression in an Fgf8-independent manner.\",\n      \"method\": \"Binary transgenic misexpression, conditional Sp8 knockout, molecular marker analysis in developing cortex\",\n      \"journal\": \"Cerebral cortex\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal gain- and loss-of-function in vivo establishes bidirectional cross-regulation, single lab\",\n      \"pmids\": [\"23307639\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"COUP-TFI regulates activity-dependent tyrosine hydroxylase (TH) expression in dopaminergic olfactory bulb interneurons. Odor deprivation downregulates both TH and COUP-TFI in dopaminergic cells. Conditional inactivation of COUP-TFI in the EMX1 lineage reduces TH and ZIF268 expression. Lentiviral COUP-TFI deletion in adult-generated interneurons confirms cell-autonomous control of TH expression through ZIF268 induction.\",\n      \"method\": \"Conditional knockout (EMX1-Cre), odor deprivation paradigm, lentiviral cell-autonomous deletion, immunostaining\",\n      \"journal\": \"Development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — conditional and cell-autonomous deletion both establish the COUP-TFI→ZIF268→TH regulatory pathway with functional activity-dependent correlation\",\n      \"pmids\": [\"24227652\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"NR2F1 missense mutations in the zinc-finger DNA-binding domain and the putative ligand-binding domain decrease NR2F1 transcriptional activity as measured by luciferase reporter assay, establishing that NR2F1 DNA-binding and ligand-binding domain integrity is required for transcriptional function.\",\n      \"method\": \"Luciferase reporter assay with patient-derived missense mutant constructs\",\n      \"journal\": \"American journal of human genetics\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 / Moderate — functional loss-of-function assay with multiple patient mutations in two distinct domains, single cell-based assay\",\n      \"pmids\": [\"24462372\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"NR2F1 drives tumor cell dormancy by inducing global chromatin repression and upregulating SOX9, RARβ, CDK inhibitors, and the pluripotency gene NANOG. NR2F1-dependent quiescence is recapitulated by co-treatment with 5-Aza-C and retinoic acid. In vivo blockade of NR2F1 interrupts growth arrest or survival of dormant DTCs in different organs.\",\n      \"method\": \"In vitro dormancy models (HNSCC), in vivo mouse models, epigenetic co-treatment (5-Aza-C + RA), gene knockdown/overexpression, ChIP (chromatin repression analysis), bone marrow DTC analysis from prostate cancer patients\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple in vitro and in vivo models, patient DTC validation, multiple downstream pathway components identified with functional epistasis\",\n      \"pmids\": [\"25636082\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"Coup-TF1 and Coup-TF2 (Nr2f1 and Nr2f2) expressed in an arc-shaped MGE progenitor domain promote time-dependent survival of this neuroepithelium and specification of layer V SST+ cortical interneurons. They autonomously repress PV+ fate in MGE progenitors, in part by directly driving Sox6 expression.\",\n      \"method\": \"Conditional knockout of Coup-TF1/TF2 in MGE progenitors, interneuron subtype marker analysis, Sox6 expression analysis\",\n      \"journal\": \"Development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — conditional loss-of-function with cell-type specific readouts and identification of direct downstream effector (Sox6)\",\n      \"pmids\": [\"28694260\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"In the developing sensory neocortex, Foxg1 binds to an H3K4me1-enriched enhancer site to repress COUP-TFI expression. Ectopic Foxg1 in layer 4 cells transforms local projection neurons to callosal projection neurons; removal of Foxg1 in long-range projection neurons derepresses COUP-TFI and activates a layer 4 neuron-specific program. Early growth response genes (Egr) repress Foxg1 in layer 4 precursors via TGF-β signaling.\",\n      \"method\": \"ChIP (H3K4me1 enhancer), in utero electroporation (gain/loss of function), conditional knockout, layer-specific marker analysis\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP identifies specific enhancer, genetic manipulation in vivo establishes epistatic hierarchy (Egr→Foxg1→COUP-TFI)\",\n      \"pmids\": [\"31395862\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"COUP-TFI/NR2F1 is necessary and sufficient to promote neurogenesis by suppressing astrogliogenesis in adult hippocampal neural stem cells. Inducible COUP-TFI knockout reduces neurogenesis and increases astrocyte production without depleting the NSC pool. Forced COUP-TFI expression decreases astrogliogenesis and rescues the neuro-astrogliogenic imbalance under neuroinflammation.\",\n      \"method\": \"Inducible conditional knockout, retroviral loss-of-function, genetic fate mapping, gain-of-function overexpression, neuroinflammation model\",\n      \"journal\": \"Cell reports\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — bidirectional loss- and gain-of-function with fate mapping in vivo, including disease-relevant (neuroinflammation) rescue experiment\",\n      \"pmids\": [\"29996095\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"NR2F1 promotes CXCL12 and CXCR4 expression in salivary adenoid cystic carcinoma cells and activates CXCL12/CXCR4 pathway. ChIP assays demonstrate direct NR2F1 binding at the CXCL12/CXCR4 loci. Overexpression of CXCL12 partially rescues proliferation, migration, and invasion activities suppressed by NR2F1 silencing.\",\n      \"method\": \"NR2F1 overexpression/siRNA knockdown, ChIP (CXCL12/CXCR4 promoters), proliferation/migration/invasion assays, rescue experiments\",\n      \"journal\": \"BMC cancer\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP confirms direct binding at target gene loci, rescue experiment places CXCL12 downstream of NR2F1, single lab\",\n      \"pmids\": [\"31357956\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"NR2F1 regionally controls long-term self-renewal of neural progenitor cells via modulation of cell cycle genes and Pax6. In BBSOAS patients with NR2F1 haploinsufficiency, polymicrogyria-like brain malformations occur in parietal/occipital cortex. In cerebral organoids, reduced NR2F1 levels affect neurogenesis and PAX6 expression.\",\n      \"method\": \"BBSOAS mouse model (Nr2f1 haploinsufficient), patient brain MRI, cerebral organoids (NR2F1 knockdown), cell cycle gene expression analysis\",\n      \"journal\": \"The EMBO journal\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple model systems (mouse, human patient brain, organoids) converge on NR2F1 regulation of Pax6 and cell cycle genes in neural progenitors\",\n      \"pmids\": [\"32484994\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"NR2F1 expression is positively regulated by p38α signaling and repressed by HER2 and WNT4 pathways in early-stage breast cancer cells. Loss of NR2F1 function increases in vivo dissemination accompanied by decreased E-cadherin, activated WNT-dependent β-catenin signaling, disorganized laminin 5, and increased EMT genes (TWIST1, ZEB1, PRRX1), promoting a hybrid luminal/basal phenotype.\",\n      \"method\": \"High-resolution intravital imaging, NR2F1 loss-of-function, E-cadherin/β-catenin/laminin immunostaining, signaling pathway inhibitors (p38α, HER2, WNT4), gene expression analysis\",\n      \"journal\": \"Cancer research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — intravital imaging is high-resolution functional assay, signaling pathway identification relies on inhibitor/overexpression in single lab\",\n      \"pmids\": [\"35471456\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"A specific small-molecule agonist (DIM-C-Pyr-4 derivative) of NR2F1 activates dormancy programs in malignant cells via a self-regulated increase in NR2F1 mRNA/protein and downstream transcription. This leads to growth arrest, inhibition of mTOR signaling, metastasis suppression, and induction of a neural crest lineage program. The effect is lost when NR2F1 is knocked out by CRISPR-Cas9.\",\n      \"method\": \"Small-molecule agonist treatment, CRISPR-Cas9 NR2F1 knockout (loss of function confirmation), RNA-seq, 3D culture assay, patient-derived organoids, in vivo mouse metastasis model, immunofluorescence (NR2F1hi/p27hi/Ki67lo phenotype)\",\n      \"journal\": \"The Journal of experimental medicine\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — pharmacological activation combined with CRISPR genetic validation, RNA-seq pathway mapping, in vitro and in vivo models, multiple cell types\",\n      \"pmids\": [\"34812843\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"LRRK2-G2019S mutation in Parkinson's disease decreases NR2F1 expression in neuroepithelial stem cells, neurons, and midbrain organoids. NR2F1-deficient mouse embryos show accelerated dopaminergic differentiation in vivo, suggesting NR2F1 normally restrains cell-cycle exit and differentiation timing in dopaminergic neurogenesis.\",\n      \"method\": \"Patient-specific NESCs (iPSC-derived), high-throughput image analysis, single-cell RNA sequencing, NR2F1-deficient mouse embryos, midbrain organoids\",\n      \"journal\": \"Cell reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — convergence of patient iPSC model and mouse KO model on NR2F1's role in differentiation timing, single lab\",\n      \"pmids\": [\"34686322\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"METTL3 methylates NR2F1 mRNA in an m6A-dependent manner to regulate NR2F1 expression in retinal pigment epithelium cells. NR2F1 deficiency reverses the decreased Occludin expression and increased IL-6 secretion observed in METTL3-defective RPE cells, placing NR2F1 downstream of m6A modification by METTL3 in RPE inflammation regulation.\",\n      \"method\": \"MeRIP-sequencing (m6A mapping), RNA-seq, METTL3 silencing/NR2F1 silencing, Western blot (Occludin), ELISA (IL-6), rescue experiments\",\n      \"journal\": \"Frontiers in immunology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — MeRIP-seq identifies m6A site, rescue experiment establishes epistatic relationship (METTL3 upstream of NR2F1), single lab\",\n      \"pmids\": [\"35936005\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"SETD2 inactivation reduces NR2F1 transcription by impairing H3K36me3 deposition and chromatin accessibility at the NR2F1 locus. Reduced NR2F1 activates the STAT1 signaling pathway to promote chemokines, PD-1 expression, and antigen presentation. ChIP-seq and ATAC-seq confirm the SETD2→H3K36me3→NR2F1 chromatin regulatory axis.\",\n      \"method\": \"ATAC-seq, ChIP-seq (H3K36me3), RNA-seq, single-cell RNA-seq, Setd2 knockout syngeneic mouse models, flow cytometry\",\n      \"journal\": \"Journal for immunotherapy of cancer\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Moderate — multiomics (ATAC-seq + ChIP-seq + RNA-seq) in same study establishes chromatin mechanism, syngeneic mouse model confirms in vivo relevance\",\n      \"pmids\": [\"38056895\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"COUP-TFI activation of the vitronectin gene in P19 cells is accompanied by recruitment of thymine DNA glycosylase (TDG) and p68 RNA helicase. DNA methyltransferases Dnmt3a and Dnmt3b are loaded onto the activated vitronectin gene, with strand-biased decrease in CpG methylation. Dnmt3a co-immunoprecipitates with COUP-TFI and TDG in vivo; cotransfection shows Dnmt3a/b enhances COUP-TFI-mediated activation of a methylated reporter gene.\",\n      \"method\": \"ChIP (TDG, p68, Dnmt3a occupancy), bisulfite sequencing (CpG methylation), co-immunoprecipitation (Dnmt3a–COUP-TFI–TDG), cotransfection reporter assay\",\n      \"journal\": \"Molecular endocrinology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and co-IP provide mechanistic evidence for Dnmt3a–COUP-TFI interaction during gene activation, single lab\",\n      \"pmids\": [\"17579209\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"COUP-TFI binds retinoic acid-responsive elements (RAREs) in the ceramide kinase (CERK) promoter and represses CERK transcription during ATRA-induced differentiation of SH-SY5Y neuroblastoma cells. EMSA shows ATRA-induced binding of COUP-TFI, RARα, and RXRα to the RARE. ChIP confirms recruitment of COUP-TFI and corepressors to this region. siRNA knockdown of COUP-TFI relieves CERK repression.\",\n      \"method\": \"EMSA, DNA pull-down, ChIP (COUP-TFI and corepressor recruitment), siRNA knockdown, promoter truncation/mutation assays\",\n      \"journal\": \"Journal of neurochemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP confirms in vivo occupancy, siRNA loss-of-function confirms functional relevance, single lab\",\n      \"pmids\": [\"19903244\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"COUP-TFI is required for proper hippocampal development along the septo-temporal longitudinal axis. Loss of cortical COUP-TFI results in dysmorphic hippocampus with altered shape, volume, and connectivity, particularly in dorsal and intermediate regions. Topographic entorhinal cortex inputs are strongly impaired in the dorsal hippocampus. These structural changes are associated with selective spatial learning and memory impairment.\",\n      \"method\": \"Cortical COUP-TFI conditional knockout, hippocampal volumetry/shape analysis, axon tracing, spatial memory behavioral testing (Morris water maze or equivalent)\",\n      \"journal\": \"Cerebral cortex\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — conditional loss-of-function with anatomical, connectivity, and behavioral readouts in same study, single lab\",\n      \"pmids\": [\"26813976\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"COUP-TFI is required in dentate gyrus progenitors for modulating Cxcr4 receptor expression during granule cell neurogenesis and migration. Loss of COUP-TFI in progenitors leads to decreased granule cell proliferation, precocious differentiation, increased apoptosis, and high Cxcr4 expression with aberrant migration. High COUP-TFI expression downregulates Cxcr4. Increased Cxcr4 expression in wild-type cells phenocopies COUP-TFI loss-of-function migration defects.\",\n      \"method\": \"Conditional knockout (progenitor vs. postmitotic), gain-of-function Cxcr4 overexpression, immunostaining, proliferation and migration analysis\",\n      \"journal\": \"Development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — conditional loss-of-function combined with Cxcr4 gain-of-function phenocopy establishes the regulatory axis with cell-type specificity\",\n      \"pmids\": [\"28506990\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"NR2F1/COUP-TFI is an orphan nuclear receptor transcriptional regulator that predominantly functions as a repressor by recruiting corepressors N-CoR and SMRT (via its C-terminal repressor domain) and assembling a complex with NCoR, HDAC1, TIF1β/KAP-1, Brahma, and DBC1; it binds nuclear receptor response elements (direct repeats, half-sites) and also interacts with ERα—enhancing ERα AF-1 activity through ERK2-mediated Ser118 phosphorylation—and with AHR. In neural development, NR2F1 acts as a graded intrinsic determinant of neocortical arealization (repressing frontal/motor identities, specifying sensory areas), controls the timing of neurogenic-to-gliogenic transition in neural stem cells, directs cortical interneuron subtype specification (CGE-derived VIP+/CR+ vs. MGE-derived PV+) partly by driving Sox6, promotes radial migration of callosal projection neurons by directly repressing Rnd2, regulates axonal growth via MAP1B/RND2, controls oligodendrocyte differentiation upstream of SCIP/Oct-6, modulates adult hippocampal neurogenesis vs. astrogliogenesis, and maintains activity-dependent TH expression in olfactory bulb dopaminergic neurons via ZIF268; its expression is epigenetically regulated by PRC2 (H3K27me3 attenuation of RA-induced transcription) and SETD2 (H3K36me3-dependent chromatin accessibility), and its mRNA is post-transcriptionally regulated by METTL3-mediated m6A modification; in cancer, NR2F1 is a central node for tumor cell dormancy by inducing SOX9/RARβ/CDK inhibitor/NANOG programs and is activated pharmacologically by a specific small-molecule agonist that induces dormancy and suppresses metastasis.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"NR2F1 (COUP-TFI/EAR-3) is an orphan nuclear receptor that functions chiefly as a sequence-specific transcriptional repressor and a graded intrinsic determinant of neural cell-fate decisions [#0, #5]. It binds nuclear receptor response elements—direct repeats, half-sites, and RAREs—often competing with or displacing activating receptors such as HNF-4, RAR:RXR, and Nkx2.5 from shared sites to silence target promoters including ApoB/ApoCIII/ApoAII, Oct-3/4, MTTP, and calreticulin [#1, #2, #19, #24]. Its repressive output is executed through a C-terminal repressor domain that recruits the corepressors N-CoR and SMRT, and it nucleates a larger silencing complex containing NCoR, HDAC1, TIF1\\u03b2/KAP-1, Brahma, and DBC1 [#0, #8]; in a context-dependent manner it can also activate transcription via the coactivators GRIP1/SRC-1 and cooperate with ER\\u03b1, enhancing ER\\u03b1 AF-1 activity through ERK2-mediated Ser118 phosphorylation [#21, #14]. In neural development NR2F1 patterns the neocortex as a graded factor that represses frontal/motor identities and specifies sensory areas, controls neuronal birth timing and the neurogenic-to-gliogenic transition, directs cortical interneuron subtype specification partly by driving Sox6, and promotes radial migration of callosal projection neurons by directly repressing Rnd2 [#5, #7, #30, #12]. It governs axon growth and commissure formation through MAP1B/RND2, oligodendrocyte differentiation upstream of SCIP/Oct-6, adult hippocampal neurogenesis versus astrogliogenesis, and activity-dependent TH expression in olfactory dopaminergic neurons via ZIF268 [#9, #17, #32, #27]. NR2F1 dosage is itself tightly controlled epigenetically and post-transcriptionally—by PRC2/H3K27me3, SETD2/H3K36me3, and METTL3-mediated m6A modification [#25, #39, #38]. In cancer, NR2F1 is a master node for disseminated tumor cell dormancy, inducing global chromatin repression and SOX9/RAR\\u03b2/CDK-inhibitor/NANOG programs to enforce quiescence and suppress metastasis, an effect that can be triggered pharmacologically by a specific small-molecule agonist [#29, #36]. Heterozygous NR2F1 loss-of-function mutations cause Bosch-Boonstra-Schaaf optic atrophy syndrome (BBSOAS), with patient mutations in the DNA-binding and ligand-binding domains reducing transcriptional activity and haploinsufficiency producing cortical malformations linked to dysregulated self-renewal and Pax6 [#28, #34].\",\n  \"teleology\": [\n    {\n      \"year\": 1992,\n      \"claim\": \"Established that NR2F1 is a sequence-specific DNA-binding repressor that silences metabolic gene promoters by competing with activating receptors, defining its core biochemical mode of action.\",\n      \"evidence\": \"EMSA with quantified affinity, competition binding, and cotransfection reporter assays on ApoB/ApoCIII/ApoAII promoters in HepG2 cells\",\n      \"pmids\": [\"1639815\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Did not identify the corepressor machinery executing repression\", \"Did not test endogenous chromatin occupancy\"]\n    },\n    {\n      \"year\": 1995,\n      \"claim\": \"Showed NR2F1 represses Oct-3/4 by outcompeting RAR:RXR at a shared RAREoct element and that retinoic acid upregulates NR2F1, linking it to RA-driven differentiation programs.\",\n      \"evidence\": \"EMSA competition, reporter assays, and C-terminal deletion mutagenesis in P19 embryonal carcinoma cells\",\n      \"pmids\": [\"7823919\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Mechanism of how RA induces NR2F1 not resolved\", \"Corepressor identity at the locus not defined\"]\n    },\n    {\n      \"year\": 1997,\n      \"claim\": \"Defined the molecular basis of repression by mapping a C-terminal repressor domain that binds the corepressors N-CoR and SMRT, shared with unliganded TR\\u03b2.\",\n      \"evidence\": \"Yeast two-hybrid, GST pull-down, squelching/repression assays, deletion mutagenesis\",\n      \"pmids\": [\"9171235\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Did not show the full multiprotein complex in cells\", \"Did not establish target gene specificity in vivo\"]\n    },\n    {\n      \"year\": 2000,\n      \"claim\": \"Revealed NR2F1's dual activator capacity and its physical/regulatory cross-talk with ER\\u03b1, AHR, and ERR\\u03b11, extending it beyond pure repression.\",\n      \"evidence\": \"In vitro protein interaction assays, co-IP, EMSA on XRE, reporter assays in CV-1/MCF-7 cells; coactivator (GRIP1/SRC-1) co-IP and domain mapping\",\n      \"pmids\": [\"10620335\", \"10652338\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Interaction interfaces not structurally resolved\", \"Physiological relevance of AHR competition untested in vivo\"]\n    },\n    {\n      \"year\": 1999,\n      \"claim\": \"Demonstrated NR2F1 is an intrinsic cortical patterning factor required for subplate neuron differentiation and thalamocortical innervation, beginning the neural developmental program.\",\n      \"evidence\": \"Coup-tf1 null mouse knockout with histology and axon tracing\",\n      \"pmids\": [\"10624948\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct transcriptional targets in subplate not identified\", \"Cell-autonomous vs non-autonomous contributions unresolved at this stage\"]\n    },\n    {\n      \"year\": 2001,\n      \"claim\": \"Showed NR2F1 acts thalamus-independently as an intrinsic arealization determinant working with Pax6 and Emx2 to specify neocortical identity.\",\n      \"evidence\": \"COUP-TFI null mouse, region-specific marker analysis, axon tracing\",\n      \"pmids\": [\"11511537\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct downstream area-identity genes not yet mapped\", \"Graded dosage mechanism not yet demonstrated\"]\n    },\n    {\n      \"year\": 2007,\n      \"claim\": \"Established NR2F1 as a graded determinant balancing frontal/motor versus sensory area identity and a regulator of progenitor cell-cycle exit, linking arealization to proliferation control.\",\n      \"evidence\": \"Cortex-specific conditional knockout with marker and axonal tracing; LOF/GOF with pERK/pAKT/\\u03b2-catenin readouts\",\n      \"pmids\": [\"17828260\", \"18165280\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Signaling repression (#18165280) inferred from expression, not direct biochemistry\", \"Direct target genes of arealization repression incompletely defined\"]\n    },\n    {\n      \"year\": 2010,\n      \"claim\": \"Identified Fabp7 as a directly bound and chromatin-state-controlled NR2F1 target via genome-scale ChIP integration, providing in vivo target validation.\",\n      \"evidence\": \"Microarray (KO vs WT), computational site prediction, in vivo/in vitro ChIP, chromatin mark analysis, Western blot\",\n      \"pmids\": [\"20111703\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Genome-wide direct target set still incomplete\", \"Single-tissue (inner ear) ChIP limits generality\"]\n    },\n    {\n      \"year\": 2010,\n      \"claim\": \"Resolved how NR2F1 controls neuronal birth timing and axonal/migration programs, repressing the corticospinal motor neuron program and directly repressing Rnd2 to enable radial migration.\",\n      \"evidence\": \"Conditional knockouts with axon tracing, behavior, and in utero electroporation Rnd2 rescue\",\n      \"pmids\": [\"20133588\", \"21965613\", \"17021036\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether Rnd2/MAP1B are the sole effectors of migration phenotypes unclear\", \"Direct binding at the Rnd2 promoter not fully mapped\"]\n    },\n    {\n      \"year\": 2011,\n      \"claim\": \"Demonstrated NR2F1 specifies cortical interneuron subtype identity (CGE-derived VIP+/CR+ vs MGE-derived PV+), later shown to act partly by directly driving Sox6.\",\n      \"evidence\": \"Conditional knockouts, subtype marker analysis, pharmacological seizure assays; MGE-progenitor cKO with Sox6 analysis\",\n      \"pmids\": [\"21430164\", \"28694260\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct vs indirect regulation of Sox6 not biochemically confirmed\", \"Redundancy with NR2F2 not fully partitioned\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Defined the in-cell NR2F1 repressor complex (NCoR/HDAC1/KAP-1/Brahma/DBC1) and a function in TNF\\u03b1 signaling via TNFAIP8 repression, and established NR2F1/NR2F2 as a switch for the neurogenic-to-gliogenic transition.\",\n      \"evidence\": \"Tandem affinity purification and in vitro binding for the complex; double shRNA knockdown in ESC-derived NSPCs and forebrain for the temporal switch\",\n      \"pmids\": [\"19112178\", \"19160499\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Stoichiometry and assembly order of the complex unresolved\", \"Mechanism coupling the complex to gliogenic competence not defined\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Showed NR2F1 dosage is itself epigenetically tuned by PRC2 and embedded in reciprocal cortical regulatory circuits, including with Sp8, and drives an activity-dependent ZIF268\\u2192TH axis in olfactory neurons.\",\n      \"evidence\": \"Suz12 shRNA + ChIP for PRC2; transgenic/conditional Sp8 manipulation; conditional and lentiviral cell-autonomous NR2F1 deletion with odor deprivation\",\n      \"pmids\": [\"23666625\", \"23307639\", \"24227652\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether PRC2 acts directly or indirectly on NR2F1 in vivo unresolved\", \"ZIF268 as the sole intermediary to TH not excluded\"]\n    },\n    {\n      \"year\": 2014,\n      \"claim\": \"Linked NR2F1 to human disease (BBSOAS) by demonstrating patient missense mutations in the DNA-binding and ligand-binding domains reduce transcriptional activity.\",\n      \"evidence\": \"Luciferase reporter assays with patient-derived mutant constructs\",\n      \"pmids\": [\"24462372\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Cell-based assay does not capture neural-specific consequences\", \"Dominant-negative vs haploinsufficiency mechanism not distinguished here\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Identified NR2F1 as a master inducer of disseminated tumor cell dormancy, enforcing quiescence through global chromatin repression and a SOX9/RAR\\u03b2/CDK-inhibitor/NANOG program.\",\n      \"evidence\": \"In vitro/in vivo dormancy models, 5-Aza-C+RA co-treatment, knockdown/overexpression, ChIP, patient bone marrow DTC analysis\",\n      \"pmids\": [\"25636082\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct genomic targets driving chromatin repression incompletely mapped\", \"Signals upstream that activate NR2F1 in DTCs not defined here\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Established NR2F1 as necessary and sufficient to bias adult hippocampal NSCs toward neurogenesis over astrogliogenesis, including rescue under neuroinflammation.\",\n      \"evidence\": \"Inducible cKO, retroviral LOF, fate mapping, GOF overexpression, neuroinflammation model\",\n      \"pmids\": [\"29996095\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Transcriptional targets controlling the neuro/astroglial switch not identified\", \"Mechanism of neuroinflammation rescue unresolved\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Resolved how NR2F1 expression boundaries are set by the Egr\\u2192Foxg1 enhancer circuit and how NR2F1 controls hippocampal neurogenesis/migration via Cxcr4, plus its broader role in hippocampal structure and spatial memory.\",\n      \"evidence\": \"ChIP at H3K4me1 enhancer, in utero electroporation, conditional knockouts; progenitor cKO with Cxcr4 GOF phenocopy; cortical cKO with volumetry, tracing, and behavior\",\n      \"pmids\": [\"31395862\", \"28506990\", \"26813976\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct NR2F1 binding at Cxcr4 not shown\", \"Behavioral deficits not mechanistically tied to a single target\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Connected NR2F1 dosage to BBSOAS pathology by showing haploinsufficiency disrupts neural progenitor self-renewal and Pax6, and to breast cancer dissemination through p38\\u03b1/HER2/WNT4 control and EMT suppression.\",\n      \"evidence\": \"Haploinsufficient mouse, patient MRI, cerebral organoids; intravital imaging, LOF, pathway inhibitors, EMT/E-cadherin/\\u03b2-catenin analysis\",\n      \"pmids\": [\"32484994\", \"35471456\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct vs indirect regulation of Pax6 unresolved\", \"Upstream signaling links to NR2F1 (#35471456) rely on inhibitor/overexpression in single lab\"]\n    },\n    {\n      \"year\": 2021,\n      \"claim\": \"Demonstrated NR2F1 is pharmacologically actionable—a small-molecule agonist self-amplifies NR2F1 to enforce dormancy, inhibit mTOR, and suppress metastasis—and that NR2F1 restrains dopaminergic differentiation timing relevant to Parkinson's disease.\",\n      \"evidence\": \"Agonist treatment with CRISPR-Cas9 KO validation, RNA-seq, organoids, in vivo metastasis; LRRK2-G2019S iPSC NESCs, scRNA-seq, NR2F1-deficient mouse embryos, midbrain organoids\",\n      \"pmids\": [\"34812843\", \"34686322\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct molecular target/binding mode of the agonist not defined\", \"How LRRK2-G2019S lowers NR2F1 mechanistically unresolved\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Showed multilayered control of NR2F1 mRNA/chromatin (METTL3 m6A, SETD2/H3K36me3) couples NR2F1 dosage to epithelial integrity, inflammation, and STAT1-driven immune signaling.\",\n      \"evidence\": \"MeRIP-seq and rescue in RPE cells; ATAC-seq/ChIP-seq/RNA-seq with Setd2-KO syngeneic mouse models\",\n      \"pmids\": [\"35936005\", \"38056895\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Which m6A reader transduces the METTL3 effect not identified\", \"Direct NR2F1 targets in STAT1 axis not fully mapped\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"How NR2F1's ligand-binding domain is regulated (true ligand vs constitutive activity) and how it switches between repressor and activator modes across cell contexts remains unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Low\",\n      \"gaps\": [\"No endogenous ligand defined despite agonist responsiveness\", \"Determinants of corepressor vs coactivator recruitment context not established\", \"Genome-wide direct target maps across neural and tumor states incomplete\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [0, 1, 2, 5, 8, 29]},\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [1, 2, 23, 24, 28]},\n      {\"term_id\": \"GO:0098772\", \"supporting_discovery_ids\": [14, 21]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [0, 8, 23]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [0, 1, 8, 23]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [4, 5, 7, 12, 17, 30]},\n      {\"term_id\": \"R-HSA-1643685\", \"supporting_discovery_ids\": [28, 29, 34, 36]},\n      {\"term_id\": \"R-HSA-4839726\", \"supporting_discovery_ids\": [25, 29, 39]}\n    ],\n    \"complexes\": [\n      \"NCoR/HDAC1/KAP-1/Brahma/DBC1 corepressor complex\"\n    ],\n    \"partners\": [\n      \"NCOR1\",\n      \"NCOR2\",\n      \"HDAC1\",\n      \"TRIM28\",\n      \"CCAR2\",\n      \"ESR1\",\n      \"AHR\",\n      \"NCOA2\"\n    ],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":8,"faith_total":8,"faith_pct":100.0}}