{"gene":"CUX2","run_date":"2026-04-28T17:28:53","timeline":{"discoveries":[{"year":1996,"finding":"CUX2 protein contains three Cut repeat domains and one homeodomain, and a GST fusion protein containing the C-terminal Cut repeat and homeodomain exhibits sequence-specific DNA binding to oligonucleotides derived from the NCAM gene promoter.","method":"In vitro DNA binding assay with GST fusion protein; structural/domain analysis","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1 — in vitro binding assay with purified fusion protein demonstrating sequence-specific DNA binding","pmids":["8798433"],"is_preprint":false},{"year":2004,"finding":"Purified CUX2 Cut repeat fusion proteins (CR1CR2, CR2CR3HD, CR3HD) bind DNA with similar sequence specificity as corresponding CUX1 domains but with much more rapid kinetics; the full-length CUX2 protein makes rapid but transient interactions with DNA, in contrast to CUX1. CUX2 functions exclusively as a transcriptional repressor in NIH3T3 cells, unlike CUX1 which can activate or repress.","method":"In vitro DNA binding kinetics assays with purified fusion proteins; transcriptional reporter assays in NIH3T3 cells","journal":"Gene","confidence":"High","confidence_rationale":"Tier 1 — in vitro biochemical assay with purified proteins plus functional transcription assay, multiple orthogonal methods","pmids":["15656993"],"is_preprint":false},{"year":2007,"finding":"CUX2 controls cell cycle exit of SVZ intermediate neuronal precursors in a cell-autonomous manner; Cux2-deficient mice show excessive SVZ precursor proliferation and increased upper layer neuron number. CUX2 function is independent of CUX1 in controlling SVZ proliferation, as shown in Cux1−/−; Cux2−/− double mutants.","method":"Knockout mouse analysis, cell cycle re-entry assays (BrdU double labeling), overexpression studies, genetic epistasis (double mutant)","journal":"Cerebral cortex","confidence":"High","confidence_rationale":"Tier 2 — loss-of-function with defined cellular phenotype plus epistasis via double-mutant, replicated across multiple approaches","pmids":["18033766"],"is_preprint":false},{"year":2008,"finding":"CUX2 directly binds the promoters of Neurod and p27(Kip1) in vivo (shown by chromatin immunoprecipitation), and regulates cell-cycle progression of spinal cord neural progenitors; loss-of-function reduces Neurod and p27(Kip1) activity while gain-of-function induces high levels of both, linking CUX2 transcriptional activity to cell-cycle exit and neuroblast formation.","method":"Chromatin immunoprecipitation (ChIP) in vivo; loss-of-function (knockout mice) and gain-of-function (transgenic mice) with phenotypic analysis","journal":"Development","confidence":"High","confidence_rationale":"Tier 1-2 — ChIP demonstrating direct promoter binding combined with in vivo loss- and gain-of-function with defined molecular and cellular phenotypes","pmids":["18223201"],"is_preprint":false},{"year":2008,"finding":"CUX1 and CUX2 together are required for the specification of Reelin-expressing cortical interneurons; Cux1−/−; Cux2−/− double mutant mice completely lack Reelin expression in cortical layers II-IV, while single mutants are unaffected, demonstrating redundant roles.","method":"Genetic epistasis via double-knockout mouse analysis; immunohistochemistry for Reelin","journal":"Developmental neurobiology","confidence":"High","confidence_rationale":"Tier 2 — genetic epistasis with double-mutant clearly defining redundant functions","pmids":["18327765"],"is_preprint":false},{"year":2009,"finding":"CUX2 functions downstream of Notch signaling in regulating dorsal spinal cord interneuron formation; Notch signaling regulates Cux2 expression, and Cux2 loss-of-function impairs interneuron formation, placing CUX2 as a downstream mediator of Notch in this context.","method":"Loss-of-function mouse studies; Notch pathway manipulation establishing epistatic relationship","journal":"Development","confidence":"Medium","confidence_rationale":"Tier 2 — genetic epistasis placing CUX2 downstream of Notch, single lab","pmids":["19542352"],"is_preprint":false},{"year":2010,"finding":"CUX2 is an intrinsic regulator of dendritic branching, spine development, and synapse formation in layer II-III cortical neurons; Cux2 knockout mice show reduced dendritic arbors, abnormal spine maturation, and reduced synaptic function correlated with working memory deficits. CUX2 partly controls spine number and maturation through direct transcriptional regulation of chromatin remodeling genes Xlr3b and Xlr4b.","method":"Knockout and knockdown studies; morphological analysis; electrophysiology; molecular target identification; behavioral testing (working memory)","journal":"Neuron","confidence":"High","confidence_rationale":"Tier 2 — multiple orthogonal methods (KO, morphology, electrophysiology, behavior, target gene analysis), strong mechanistic study","pmids":["20510857"],"is_preprint":false},{"year":2012,"finding":"CUX2 functions as a sex-specific transcriptional regulator in female liver, activating female-biased genes and repressing male-biased genes; CUX2 chromatin binding is preferentially enriched near repressed genes and at sites of male-biased DNase hypersensitivity and male-enriched STAT5 binding regions.","method":"Adenoviral overexpression in male liver; siRNA knockdown in female liver; ChIP-seq for CUX2 binding; transcriptomic analysis","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 2 — multiple orthogonal approaches (OE, KD, ChIP-seq) in vivo, strong mechanistic characterization","pmids":["22966202"],"is_preprint":false},{"year":2014,"finding":"CUX2 has distinct effects on apical versus basal dendritic compartments: modulation of CUX2 levels predominantly affects apical dendrite development, while CUX1 predominantly affects basal dendrites, as determined by in vivo loss- and gain-of-function studies in layer II-III cortical neurons.","method":"In vivo loss-of-function and gain-of-function analysis; dendritic morphology quantification","journal":"Developmental neurobiology","confidence":"Medium","confidence_rationale":"Tier 2 — in vivo loss/gain of function with defined morphological phenotypes, single lab","pmids":["25059644"],"is_preprint":false},{"year":2015,"finding":"CUX2 Cut repeat domains stimulate OGG1 (8-oxoguanine DNA glycosylase 1) activity in vitro: they increase OGG1 binding to 8-oxoguanine-containing DNA and stimulate both its glycosylase and AP lyase activities. CUX2 knockdown in embryonic cortical neurons and other cell types increases oxidative DNA damage and delays repair, while ectopic expression of CUX2 Cut repeats accelerates repair.","method":"In vitro enzymatic assay with purified proteins; CUX2 knockdown in neurons and cell lines; ectopic expression; DNA damage quantification","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 1 — in vitro reconstitution of OGG1 stimulation plus loss-of-function and gain-of-function with defined molecular phenotypes","pmids":["26221032"],"is_preprint":false},{"year":2015,"finding":"CUX2 competes with HNF6 for DNA binding at shared genomic sites in liver chromatin; CUX2 inhibits HNF6-mediated transcriptional regulation of CYP2C11 and CYP2C12 promoters, with ~90% of CUX2 binding sites also bound by HNF6. Competition for DNA binding was demonstrated by in vitro EMSA and validated in vivo by global cistrome analysis.","method":"In vitro EMSA; cell-based transfection reporter assays; ChIP-seq cistrome analysis","journal":"Molecular endocrinology","confidence":"High","confidence_rationale":"Tier 1-2 — in vitro EMSA plus genome-wide in vivo validation with multiple orthogonal methods","pmids":["26218442"],"is_preprint":false},{"year":2019,"finding":"Lmx1a transcription factor directly activates a conserved intronic CUX2 enhancer in the cortical hem; Lmx1a-binding sites are required for enhancer activity in vivo, and mis-expression of Lmx1a in hippocampal progenitors expands CUX2 enhancer activity ectopically.","method":"In vitro transcription reporter assays; in vivo enhancer analysis; bioinformatics; mis-expression experiments","journal":"Development","confidence":"Medium","confidence_rationale":"Tier 2 — in vitro and in vivo enhancer assays with site-directed mutagenesis of binding sites, single lab","pmids":["30770393"],"is_preprint":false},{"year":2019,"finding":"Lhx2 acts as a transcriptional activator of Cux2 through a conserved 220 bp enhancer element (Cux2-E1) that controls cortical layer II-IV-specific expression; identified by comparative genome analysis, in vivo reporter assays, and immunohistochemistry in Cux2-mCherry transgenic mice.","method":"BAC transgenic reporter mice; in vivo reporter assay; comparative genomic analysis; immunohistochemistry","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 2 — in vivo reporter assay identifying transcriptional activator, single lab","pmids":["31708105"],"is_preprint":false},{"year":2022,"finding":"CUX2 and CASP (a CUX1 short isoform) physically interact with each other and are co-expressed in excitatory neurons of the entorhinal cortex. CUX2 knockout mice show increased excitatory neuron numbers in the entorhinal cortex and enhanced glutamatergic synaptic transmission to the hippocampus, with increased seizure susceptibility to kainate. CUX2 variants associated with temporal lobe epilepsy show abnormal subcellular localization in human cell culture.","method":"Co-immunoprecipitation (CUX2-CASP interaction); knockout mouse electrophysiology; cell culture localization studies; targeted sequencing","journal":"Scientific reports","confidence":"Medium","confidence_rationale":"Tier 2-3 — protein interaction by co-IP, KO with electrophysiology, and localization analysis; single lab","pmids":["35581205"],"is_preprint":false},{"year":2022,"finding":"CUX2 binds the ADCY1 promoter (demonstrated by ChIP assay and dual-luciferase reporter) to enhance ADCY1 transcription, and this CUX2/ADCY1 axis suppresses glioma cell proliferation, migration, and invasion.","method":"ChIP assay; dual-luciferase reporter assay; loss- and gain-of-function in glioma cells; xenograft mouse model","journal":"Experimental brain research","confidence":"Medium","confidence_rationale":"Tier 2 — ChIP and reporter assay confirming direct promoter binding with functional rescue experiments, single lab","pmids":["36242624"],"is_preprint":false},{"year":2022,"finding":"CUX2 transcriptionally activates KDM5B expression (shown by ChIP and dual-luciferase reporter), and KDM5B in turn represses SOX17 through histone demethylation, forming a CUX2/KDM5B/SOX17 regulatory axis that promotes breast cancer malignant phenotypes.","method":"ChIP assay; dual-luciferase reporter; siRNA knockdown; Western blot; xenograft model","journal":"Endocrinology","confidence":"Medium","confidence_rationale":"Tier 2 — direct binding shown by ChIP plus mechanistic cascade validated by multiple assays, single lab","pmids":["35881915"],"is_preprint":false},{"year":2026,"finding":"CUX2 function in L2/3 excitatory neurons is essential for resilience to DNA damage during neuroinflammation; Cux2 loss-of-function increases selective vulnerability of L2/3 neurons in mouse models of demyelination and pan-cortical inflammation, and interferon-γ causes elevated reactive oxygen species leading to DNA damage-mediated death of CUX2+ neurons in vitro.","method":"Knockout mouse models (demyelination, inflammation); in vitro interferon-γ treatment; DNA damage quantification; loss-of-function with defined neuronal survival phenotype","journal":"Nature","confidence":"High","confidence_rationale":"Tier 2 — multiple orthogonal models (diverse mouse models + in vitro), defined molecular mechanism linking CUX2 to DNA repair and neuronal survival","pmids":["41922773"],"is_preprint":false}],"current_model":"CUX2 is a homeodomain transcription factor with three Cut repeat domains that binds DNA rapidly but transiently (functioning primarily as a transcriptional repressor), directly activates or represses target gene promoters (including Neurod, p27Kip1, ADCY1, and KDM5B) via chromatin binding, stimulates OGG1-mediated oxidative DNA base excision repair through its Cut repeat domains, controls cell-cycle exit and proliferation of neural progenitors in the SVZ and spinal cord, regulates dendritic branching, spine morphology, and synapse formation in upper cortical layer II-III neurons partly through transcriptional control of chromatin remodeling genes Xlr3b/Xlr4b, competes with HNF6 for DNA binding to regulate sex-biased gene expression in liver, physically interacts with CASP to modulate excitatory synaptic transmission, and confers resilience to DNA damage-induced death in CUX2+ L2/3 cortical neurons during neuroinflammation."},"narrative":{"teleology":[{"year":1996,"claim":"Establishing CUX2 as a DNA-binding transcription factor with a defined domain architecture (three Cut repeats plus a homeodomain) resolved the basic molecular identity of the gene product and its capacity for sequence-specific DNA recognition.","evidence":"In vitro DNA binding assay with GST fusion protein containing C-terminal Cut repeat and homeodomain, binding NCAM promoter oligonucleotides","pmids":["8798433"],"confidence":"High","gaps":["Full-length protein binding properties not characterized","Transcriptional output (activation vs. repression) not determined","In vivo DNA targets unknown"]},{"year":2004,"claim":"Demonstrating that CUX2 makes rapid but transient DNA contacts—unlike CUX1—and functions exclusively as a transcriptional repressor established a fundamental biochemical distinction between the two CUX family paralogs.","evidence":"In vitro DNA binding kinetics with purified Cut repeat fusion proteins; transcriptional reporter assays in NIH3T3 cells","pmids":["15656993"],"confidence":"High","gaps":["In vivo relevance of rapid/transient binding kinetics unresolved","Whether CUX2 can activate transcription in other cell types not tested"]},{"year":2007,"claim":"Showing that CUX2 controls cell-cycle exit of SVZ intermediate progenitors cell-autonomously—independently of CUX1—established a non-redundant developmental function in cortical neurogenesis.","evidence":"Cux2 knockout mouse; BrdU double-labeling cell-cycle re-entry assays; Cux1/Cux2 double-knockout epistasis","pmids":["18033766"],"confidence":"High","gaps":["Direct transcriptional targets mediating cell-cycle exit in SVZ not identified","Mechanism by which CUX2 restrains proliferation not molecularly defined"]},{"year":2008,"claim":"Identifying Neurod and p27Kip1 as direct CUX2 transcriptional targets via ChIP provided a molecular mechanism linking CUX2 DNA binding to cell-cycle exit and neuroblast differentiation in the spinal cord.","evidence":"In vivo chromatin immunoprecipitation; loss- and gain-of-function in knockout and transgenic mice","pmids":["18223201"],"confidence":"High","gaps":["Whether CUX2 activates or represses these promoters context-dependently not fully resolved","Cofactors mediating CUX2 transcriptional activity at these targets unknown"]},{"year":2008,"claim":"The finding that CUX1 and CUX2 are redundantly required for Reelin-expressing cortical interneuron specification revealed a shared function distinct from CUX2's non-redundant role in SVZ progenitors.","evidence":"Cux1/Cux2 double-knockout mouse; immunohistochemistry for Reelin in cortical layers II–IV","pmids":["18327765"],"confidence":"High","gaps":["Whether CUX2 directly regulates Reelin transcription not shown","Mechanism distinguishing redundant versus non-redundant CUX1/CUX2 functions unknown"]},{"year":2010,"claim":"Establishing CUX2 as an intrinsic regulator of dendritic branching, spine maturation, and synapse formation in layer II–III neurons—partly through Xlr3b/Xlr4b—connected its transcriptional activity to post-mitotic neuronal morphogenesis and circuit function.","evidence":"Cux2 knockout and knockdown; dendritic morphology quantification; electrophysiology; working memory behavioral testing; molecular target identification","pmids":["20510857"],"confidence":"High","gaps":["How Xlr3b/Xlr4b chromatin remodeling controls spine maturation not mechanistically defined","Whether dendritic defects are reversible post-developmentally unknown"]},{"year":2012,"claim":"Demonstrating that CUX2 is a sex-specific transcriptional regulator in female liver that activates female-biased and represses male-biased genes expanded its functional repertoire beyond the nervous system.","evidence":"Adenoviral CUX2 overexpression in male liver; siRNA knockdown in female liver; CUX2 ChIP-seq; transcriptomic analysis","pmids":["22966202"],"confidence":"High","gaps":["Upstream signals conferring female-specific CUX2 expression not fully defined","Whether CUX2 liver function is relevant to metabolic physiology not tested"]},{"year":2015,"claim":"Showing that CUX2 Cut repeats directly stimulate OGG1 glycosylase/AP lyase activity revealed a non-transcriptional function in oxidative DNA base excision repair, establishing a dual role for CUX2 in both transcription and genome maintenance.","evidence":"In vitro reconstitution with purified OGG1 and CUX2 Cut repeat domains; CUX2 knockdown in embryonic cortical neurons; ectopic expression rescue","pmids":["26221032"],"confidence":"High","gaps":["Whether CUX2 participates in BER in vivo at endogenous expression levels not shown with structural detail","Physical basis of CUX2-OGG1 interaction not structurally resolved"]},{"year":2015,"claim":"Establishing that CUX2 competes with HNF6 for overlapping genomic binding sites provided a concrete mechanism for how CUX2 modulates sex-biased hepatic transcription through competitive DNA occupancy.","evidence":"In vitro EMSA; ChIP-seq cistrome overlap analysis; cell-based reporter assays","pmids":["26218442"],"confidence":"High","gaps":["Dynamic in vivo competition kinetics not characterized","Whether STAT5 chromatin remodeling is upstream or parallel to CUX2/HNF6 competition unresolved"]},{"year":2022,"claim":"Identification of CUX2-CASP physical interaction and the demonstration that CUX2 loss enhances glutamatergic transmission and seizure susceptibility linked CUX2 to excitatory synapse regulation and epilepsy-relevant phenotypes.","evidence":"Co-immunoprecipitation; Cux2 knockout mouse electrophysiology; kainate seizure model; human CUX2 variant localization studies","pmids":["35581205"],"confidence":"Medium","gaps":["CUX2-CASP interaction not validated by reciprocal co-IP or in vivo proximity labeling","Mechanism by which CUX2 restrains excitatory neuron number unknown","Causal role of human CUX2 variants in epilepsy not established by genetic segregation"]},{"year":2022,"claim":"Direct transcriptional activation of ADCY1 and KDM5B by CUX2 extended the catalog of direct target promoters and linked CUX2 to disease-relevant signaling in glioma and breast cancer contexts.","evidence":"ChIP and dual-luciferase reporter assays; loss- and gain-of-function in glioma and breast cancer cell lines; xenograft models","pmids":["36242624","35881915"],"confidence":"Medium","gaps":["CUX2 activation function at these promoters contrasts with its originally defined repressor role—context-dependent cofactors not identified","Relevance of these axes to normal physiology unclear"]},{"year":2026,"claim":"Demonstrating that CUX2 is essential for L2/3 cortical neuron resilience to DNA damage during neuroinflammation unified its transcription factor and DNA repair functions into a neuroprotective mechanism with disease relevance.","evidence":"Cux2 knockout mice in demyelination and pan-cortical inflammation models; in vitro interferon-γ treatment; DNA damage quantification and neuronal survival assays","pmids":["41922773"],"confidence":"High","gaps":["Relative contribution of transcriptional versus direct OGG1-stimulatory functions to neuroprotection not dissected","Whether CUX2-dependent resilience extends to other neurodegenerative conditions not tested"]},{"year":null,"claim":"The structural basis of CUX2's rapid/transient DNA binding, the cofactors determining whether CUX2 activates versus represses transcription in different cell types, and the relative contributions of its transcriptional versus DNA repair functions to neuronal survival remain unresolved.","evidence":"","pmids":[],"confidence":"High","gaps":["No high-resolution structure of CUX2 bound to DNA","Cofactors switching CUX2 from repressor to activator not identified","Relative contribution of BER stimulation versus transcriptional regulation to neuroprotection not separated genetically"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[0,1,3,7,10,14,15]},{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[1,3,7,14,15]},{"term_id":"GO:0140097","term_label":"catalytic activity, acting on DNA","supporting_discovery_ids":[9]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[0,3,7,9,10]}],"pathway":[{"term_id":"R-HSA-1266738","term_label":"Developmental Biology","supporting_discovery_ids":[2,3,4,5,6]},{"term_id":"R-HSA-73894","term_label":"DNA Repair","supporting_discovery_ids":[9,16]},{"term_id":"R-HSA-1640170","term_label":"Cell Cycle","supporting_discovery_ids":[2,3]}],"complexes":[],"partners":["CUX1","CASP","OGG1","HNF6"],"other_free_text":[]},"mechanistic_narrative":"CUX2 is a homeodomain transcription factor with three Cut repeat domains that governs neural progenitor cell-cycle exit, cortical neuron differentiation, dendritic morphogenesis, and DNA damage repair. CUX2 binds DNA rapidly but transiently and functions primarily as a transcriptional repressor, directly regulating target promoters including Neurod, p27Kip1, ADCY1, and KDM5B to control proliferation and differentiation in the SVZ, spinal cord, and cortical layer II–III neurons, where it also shapes dendritic branching and spine maturation through transcriptional control of chromatin remodeling genes Xlr3b/Xlr4b [PMID:15656993, PMID:18033766, PMID:18223201, PMID:20510857]. Beyond its canonical transcription factor role, the CUX2 Cut repeat domains directly stimulate OGG1-mediated oxidative base excision repair, and CUX2 function in L2/3 cortical neurons confers resilience to DNA damage–induced death during neuroinflammation [PMID:26221032, PMID:41922773]. In liver, CUX2 acts as a sex-specific transcriptional regulator by competing with HNF6 for DNA binding to control sexually dimorphic gene expression [PMID:22966202, PMID:26218442]."},"prefetch_data":{"uniprot":{"accession":"O14529","full_name":"Homeobox protein cut-like 2","aliases":["Homeobox protein cux-2"],"length_aa":1486,"mass_kda":161.7,"function":"Transcription factor involved in the control of neuronal proliferation and differentiation in the brain. Regulates dendrite development and branching, dendritic spine formation, and synaptogenesis in cortical layers II-III. Binds to DNA in a sequence-specific manner","subcellular_location":"Nucleus","url":"https://www.uniprot.org/uniprotkb/O14529/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/CUX2","classification":"Not Classified","n_dependent_lines":8,"n_total_lines":1208,"dependency_fraction":0.006622516556291391},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/CUX2","total_profiled":1310},"omim":[{"mim_id":"618141","title":"DEVELOPMENTAL AND EPILEPTIC ENCEPHALOPATHY 67; DEE67","url":"https://www.omim.org/entry/618141"},{"mim_id":"610648","title":"CUT-LIKE HOMEOBOX 2; CUX2","url":"https://www.omim.org/entry/610648"},{"mim_id":"308350","title":"DEVELOPMENTAL AND EPILEPTIC ENCEPHALOPATHY 1; DEE1","url":"https://www.omim.org/entry/308350"},{"mim_id":"125480","title":"MAJOR AFFECTIVE DISORDER 1; MAFD1","url":"https://www.omim.org/entry/125480"},{"mim_id":"116896","title":"CUT-LIKE HOMEOBOX 1; CUX1","url":"https://www.omim.org/entry/116896"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"","locations":[],"tissue_specificity":"Tissue enhanced","tissue_distribution":"Detected in some","driving_tissues":[{"tissue":"brain","ntpm":13.7},{"tissue":"choroid 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of Cux-1 and Cux-2 in the subventricular zone and upper layers II-IV of the cerebral cortex.","date":"2004","source":"The Journal of comparative neurology","url":"https://pubmed.ncbi.nlm.nih.gov/15452856","citation_count":414,"is_preprint":false},{"pmid":"20510857","id":"PMC_20510857","title":"Cux1 and Cux2 regulate dendritic branching, spine morphology, and synapses of the upper layer neurons of the cortex.","date":"2010","source":"Neuron","url":"https://pubmed.ncbi.nlm.nih.gov/20510857","citation_count":244,"is_preprint":false},{"pmid":"15238450","id":"PMC_15238450","title":"Dynamics of Cux2 expression suggests that an early pool of SVZ precursors is fated to become upper cortical layer neurons.","date":"2004","source":"Cerebral cortex (New York, N.Y. : 1991)","url":"https://pubmed.ncbi.nlm.nih.gov/15238450","citation_count":189,"is_preprint":false},{"pmid":"18033766","id":"PMC_18033766","title":"Cux-2 controls the proliferation of neuronal intermediate precursors of the cortical 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chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — in vitro binding assay with purified fusion protein demonstrating sequence-specific DNA binding\",\n      \"pmids\": [\"8798433\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2004,\n      \"finding\": \"Purified CUX2 Cut repeat fusion proteins (CR1CR2, CR2CR3HD, CR3HD) bind DNA with similar sequence specificity as corresponding CUX1 domains but with much more rapid kinetics; the full-length CUX2 protein makes rapid but transient interactions with DNA, in contrast to CUX1. CUX2 functions exclusively as a transcriptional repressor in NIH3T3 cells, unlike CUX1 which can activate or repress.\",\n      \"method\": \"In vitro DNA binding kinetics assays with purified fusion proteins; transcriptional reporter assays in NIH3T3 cells\",\n      \"journal\": \"Gene\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — in vitro biochemical assay with purified proteins plus functional transcription assay, multiple orthogonal methods\",\n      \"pmids\": [\"15656993\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"CUX2 controls cell cycle exit of SVZ intermediate neuronal precursors in a cell-autonomous manner; Cux2-deficient mice show excessive SVZ precursor proliferation and increased upper layer neuron number. CUX2 function is independent of CUX1 in controlling SVZ proliferation, as shown in Cux1−/−; Cux2−/− double mutants.\",\n      \"method\": \"Knockout mouse analysis, cell cycle re-entry assays (BrdU double labeling), overexpression studies, genetic epistasis (double mutant)\",\n      \"journal\": \"Cerebral cortex\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — loss-of-function with defined cellular phenotype plus epistasis via double-mutant, replicated across multiple approaches\",\n      \"pmids\": [\"18033766\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"CUX2 directly binds the promoters of Neurod and p27(Kip1) in vivo (shown by chromatin immunoprecipitation), and regulates cell-cycle progression of spinal cord neural progenitors; loss-of-function reduces Neurod and p27(Kip1) activity while gain-of-function induces high levels of both, linking CUX2 transcriptional activity to cell-cycle exit and neuroblast formation.\",\n      \"method\": \"Chromatin immunoprecipitation (ChIP) in vivo; loss-of-function (knockout mice) and gain-of-function (transgenic mice) with phenotypic analysis\",\n      \"journal\": \"Development\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — ChIP demonstrating direct promoter binding combined with in vivo loss- and gain-of-function with defined molecular and cellular phenotypes\",\n      \"pmids\": [\"18223201\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2008,\n      \"finding\": \"CUX1 and CUX2 together are required for the specification of Reelin-expressing cortical interneurons; Cux1−/−; Cux2−/− double mutant mice completely lack Reelin expression in cortical layers II-IV, while single mutants are unaffected, demonstrating redundant roles.\",\n      \"method\": \"Genetic epistasis via double-knockout mouse analysis; immunohistochemistry for Reelin\",\n      \"journal\": \"Developmental neurobiology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — genetic epistasis with double-mutant clearly defining redundant functions\",\n      \"pmids\": [\"18327765\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"CUX2 functions downstream of Notch signaling in regulating dorsal spinal cord interneuron formation; Notch signaling regulates Cux2 expression, and Cux2 loss-of-function impairs interneuron formation, placing CUX2 as a downstream mediator of Notch in this context.\",\n      \"method\": \"Loss-of-function mouse studies; Notch pathway manipulation establishing epistatic relationship\",\n      \"journal\": \"Development\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — genetic epistasis placing CUX2 downstream of Notch, single lab\",\n      \"pmids\": [\"19542352\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"CUX2 is an intrinsic regulator of dendritic branching, spine development, and synapse formation in layer II-III cortical neurons; Cux2 knockout mice show reduced dendritic arbors, abnormal spine maturation, and reduced synaptic function correlated with working memory deficits. CUX2 partly controls spine number and maturation through direct transcriptional regulation of chromatin remodeling genes Xlr3b and Xlr4b.\",\n      \"method\": \"Knockout and knockdown studies; morphological analysis; electrophysiology; molecular target identification; behavioral testing (working memory)\",\n      \"journal\": \"Neuron\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — multiple orthogonal methods (KO, morphology, electrophysiology, behavior, target gene analysis), strong mechanistic study\",\n      \"pmids\": [\"20510857\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"CUX2 functions as a sex-specific transcriptional regulator in female liver, activating female-biased genes and repressing male-biased genes; CUX2 chromatin binding is preferentially enriched near repressed genes and at sites of male-biased DNase hypersensitivity and male-enriched STAT5 binding regions.\",\n      \"method\": \"Adenoviral overexpression in male liver; siRNA knockdown in female liver; ChIP-seq for CUX2 binding; transcriptomic analysis\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — multiple orthogonal approaches (OE, KD, ChIP-seq) in vivo, strong mechanistic characterization\",\n      \"pmids\": [\"22966202\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"CUX2 has distinct effects on apical versus basal dendritic compartments: modulation of CUX2 levels predominantly affects apical dendrite development, while CUX1 predominantly affects basal dendrites, as determined by in vivo loss- and gain-of-function studies in layer II-III cortical neurons.\",\n      \"method\": \"In vivo loss-of-function and gain-of-function analysis; dendritic morphology quantification\",\n      \"journal\": \"Developmental neurobiology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — in vivo loss/gain of function with defined morphological phenotypes, single lab\",\n      \"pmids\": [\"25059644\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"CUX2 Cut repeat domains stimulate OGG1 (8-oxoguanine DNA glycosylase 1) activity in vitro: they increase OGG1 binding to 8-oxoguanine-containing DNA and stimulate both its glycosylase and AP lyase activities. CUX2 knockdown in embryonic cortical neurons and other cell types increases oxidative DNA damage and delays repair, while ectopic expression of CUX2 Cut repeats accelerates repair.\",\n      \"method\": \"In vitro enzymatic assay with purified proteins; CUX2 knockdown in neurons and cell lines; ectopic expression; DNA damage quantification\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 — in vitro reconstitution of OGG1 stimulation plus loss-of-function and gain-of-function with defined molecular phenotypes\",\n      \"pmids\": [\"26221032\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"CUX2 competes with HNF6 for DNA binding at shared genomic sites in liver chromatin; CUX2 inhibits HNF6-mediated transcriptional regulation of CYP2C11 and CYP2C12 promoters, with ~90% of CUX2 binding sites also bound by HNF6. Competition for DNA binding was demonstrated by in vitro EMSA and validated in vivo by global cistrome analysis.\",\n      \"method\": \"In vitro EMSA; cell-based transfection reporter assays; ChIP-seq cistrome analysis\",\n      \"journal\": \"Molecular endocrinology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 — in vitro EMSA plus genome-wide in vivo validation with multiple orthogonal methods\",\n      \"pmids\": [\"26218442\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"Lmx1a transcription factor directly activates a conserved intronic CUX2 enhancer in the cortical hem; Lmx1a-binding sites are required for enhancer activity in vivo, and mis-expression of Lmx1a in hippocampal progenitors expands CUX2 enhancer activity ectopically.\",\n      \"method\": \"In vitro transcription reporter assays; in vivo enhancer analysis; bioinformatics; mis-expression experiments\",\n      \"journal\": \"Development\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — in vitro and in vivo enhancer assays with site-directed mutagenesis of binding sites, single lab\",\n      \"pmids\": [\"30770393\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"Lhx2 acts as a transcriptional activator of Cux2 through a conserved 220 bp enhancer element (Cux2-E1) that controls cortical layer II-IV-specific expression; identified by comparative genome analysis, in vivo reporter assays, and immunohistochemistry in Cux2-mCherry transgenic mice.\",\n      \"method\": \"BAC transgenic reporter mice; in vivo reporter assay; comparative genomic analysis; immunohistochemistry\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — in vivo reporter assay identifying transcriptional activator, single lab\",\n      \"pmids\": [\"31708105\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"CUX2 and CASP (a CUX1 short isoform) physically interact with each other and are co-expressed in excitatory neurons of the entorhinal cortex. CUX2 knockout mice show increased excitatory neuron numbers in the entorhinal cortex and enhanced glutamatergic synaptic transmission to the hippocampus, with increased seizure susceptibility to kainate. CUX2 variants associated with temporal lobe epilepsy show abnormal subcellular localization in human cell culture.\",\n      \"method\": \"Co-immunoprecipitation (CUX2-CASP interaction); knockout mouse electrophysiology; cell culture localization studies; targeted sequencing\",\n      \"journal\": \"Scientific reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2-3 — protein interaction by co-IP, KO with electrophysiology, and localization analysis; single lab\",\n      \"pmids\": [\"35581205\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"CUX2 binds the ADCY1 promoter (demonstrated by ChIP assay and dual-luciferase reporter) to enhance ADCY1 transcription, and this CUX2/ADCY1 axis suppresses glioma cell proliferation, migration, and invasion.\",\n      \"method\": \"ChIP assay; dual-luciferase reporter assay; loss- and gain-of-function in glioma cells; xenograft mouse model\",\n      \"journal\": \"Experimental brain research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — ChIP and reporter assay confirming direct promoter binding with functional rescue experiments, single lab\",\n      \"pmids\": [\"36242624\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"CUX2 transcriptionally activates KDM5B expression (shown by ChIP and dual-luciferase reporter), and KDM5B in turn represses SOX17 through histone demethylation, forming a CUX2/KDM5B/SOX17 regulatory axis that promotes breast cancer malignant phenotypes.\",\n      \"method\": \"ChIP assay; dual-luciferase reporter; siRNA knockdown; Western blot; xenograft model\",\n      \"journal\": \"Endocrinology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 — direct binding shown by ChIP plus mechanistic cascade validated by multiple assays, single lab\",\n      \"pmids\": [\"35881915\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2026,\n      \"finding\": \"CUX2 function in L2/3 excitatory neurons is essential for resilience to DNA damage during neuroinflammation; Cux2 loss-of-function increases selective vulnerability of L2/3 neurons in mouse models of demyelination and pan-cortical inflammation, and interferon-γ causes elevated reactive oxygen species leading to DNA damage-mediated death of CUX2+ neurons in vitro.\",\n      \"method\": \"Knockout mouse models (demyelination, inflammation); in vitro interferon-γ treatment; DNA damage quantification; loss-of-function with defined neuronal survival phenotype\",\n      \"journal\": \"Nature\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 — multiple orthogonal models (diverse mouse models + in vitro), defined molecular mechanism linking CUX2 to DNA repair and neuronal survival\",\n      \"pmids\": [\"41922773\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"CUX2 is a homeodomain transcription factor with three Cut repeat domains that binds DNA rapidly but transiently (functioning primarily as a transcriptional repressor), directly activates or represses target gene promoters (including Neurod, p27Kip1, ADCY1, and KDM5B) via chromatin binding, stimulates OGG1-mediated oxidative DNA base excision repair through its Cut repeat domains, controls cell-cycle exit and proliferation of neural progenitors in the SVZ and spinal cord, regulates dendritic branching, spine morphology, and synapse formation in upper cortical layer II-III neurons partly through transcriptional control of chromatin remodeling genes Xlr3b/Xlr4b, competes with HNF6 for DNA binding to regulate sex-biased gene expression in liver, physically interacts with CASP to modulate excitatory synaptic transmission, and confers resilience to DNA damage-induced death in CUX2+ L2/3 cortical neurons during neuroinflammation.\"\n}\n```","stage2_raw":"```json\n{\n  \"mechanistic_narrative\": \"CUX2 is a homeodomain transcription factor with three Cut repeat domains that governs neural progenitor cell-cycle exit, cortical neuron differentiation, dendritic morphogenesis, and DNA damage repair. CUX2 binds DNA rapidly but transiently and functions primarily as a transcriptional repressor, directly regulating target promoters including Neurod, p27Kip1, ADCY1, and KDM5B to control proliferation and differentiation in the SVZ, spinal cord, and cortical layer II–III neurons, where it also shapes dendritic branching and spine maturation through transcriptional control of chromatin remodeling genes Xlr3b/Xlr4b [PMID:15656993, PMID:18033766, PMID:18223201, PMID:20510857]. Beyond its canonical transcription factor role, the CUX2 Cut repeat domains directly stimulate OGG1-mediated oxidative base excision repair, and CUX2 function in L2/3 cortical neurons confers resilience to DNA damage–induced death during neuroinflammation [PMID:26221032, PMID:41922773]. In liver, CUX2 acts as a sex-specific transcriptional regulator by competing with HNF6 for DNA binding to control sexually dimorphic gene expression [PMID:22966202, PMID:26218442].\",\n  \"teleology\": [\n    {\n      \"year\": 1996,\n      \"claim\": \"Establishing CUX2 as a DNA-binding transcription factor with a defined domain architecture (three Cut repeats plus a homeodomain) resolved the basic molecular identity of the gene product and its capacity for sequence-specific DNA recognition.\",\n      \"evidence\": \"In vitro DNA binding assay with GST fusion protein containing C-terminal Cut repeat and homeodomain, binding NCAM promoter oligonucleotides\",\n      \"pmids\": [\"8798433\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Full-length protein binding properties not characterized\", \"Transcriptional output (activation vs. repression) not determined\", \"In vivo DNA targets unknown\"]\n    },\n    {\n      \"year\": 2004,\n      \"claim\": \"Demonstrating that CUX2 makes rapid but transient DNA contacts—unlike CUX1—and functions exclusively as a transcriptional repressor established a fundamental biochemical distinction between the two CUX family paralogs.\",\n      \"evidence\": \"In vitro DNA binding kinetics with purified Cut repeat fusion proteins; transcriptional reporter assays in NIH3T3 cells\",\n      \"pmids\": [\"15656993\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"In vivo relevance of rapid/transient binding kinetics unresolved\", \"Whether CUX2 can activate transcription in other cell types not tested\"]\n    },\n    {\n      \"year\": 2007,\n      \"claim\": \"Showing that CUX2 controls cell-cycle exit of SVZ intermediate progenitors cell-autonomously—independently of CUX1—established a non-redundant developmental function in cortical neurogenesis.\",\n      \"evidence\": \"Cux2 knockout mouse; BrdU double-labeling cell-cycle re-entry assays; Cux1/Cux2 double-knockout epistasis\",\n      \"pmids\": [\"18033766\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct transcriptional targets mediating cell-cycle exit in SVZ not identified\", \"Mechanism by which CUX2 restrains proliferation not molecularly defined\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"Identifying Neurod and p27Kip1 as direct CUX2 transcriptional targets via ChIP provided a molecular mechanism linking CUX2 DNA binding to cell-cycle exit and neuroblast differentiation in the spinal cord.\",\n      \"evidence\": \"In vivo chromatin immunoprecipitation; loss- and gain-of-function in knockout and transgenic mice\",\n      \"pmids\": [\"18223201\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether CUX2 activates or represses these promoters context-dependently not fully resolved\", \"Cofactors mediating CUX2 transcriptional activity at these targets unknown\"]\n    },\n    {\n      \"year\": 2008,\n      \"claim\": \"The finding that CUX1 and CUX2 are redundantly required for Reelin-expressing cortical interneuron specification revealed a shared function distinct from CUX2's non-redundant role in SVZ progenitors.\",\n      \"evidence\": \"Cux1/Cux2 double-knockout mouse; immunohistochemistry for Reelin in cortical layers II–IV\",\n      \"pmids\": [\"18327765\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether CUX2 directly regulates Reelin transcription not shown\", \"Mechanism distinguishing redundant versus non-redundant CUX1/CUX2 functions unknown\"]\n    },\n    {\n      \"year\": 2010,\n      \"claim\": \"Establishing CUX2 as an intrinsic regulator of dendritic branching, spine maturation, and synapse formation in layer II–III neurons—partly through Xlr3b/Xlr4b—connected its transcriptional activity to post-mitotic neuronal morphogenesis and circuit function.\",\n      \"evidence\": \"Cux2 knockout and knockdown; dendritic morphology quantification; electrophysiology; working memory behavioral testing; molecular target identification\",\n      \"pmids\": [\"20510857\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How Xlr3b/Xlr4b chromatin remodeling controls spine maturation not mechanistically defined\", \"Whether dendritic defects are reversible post-developmentally unknown\"]\n    },\n    {\n      \"year\": 2012,\n      \"claim\": \"Demonstrating that CUX2 is a sex-specific transcriptional regulator in female liver that activates female-biased and represses male-biased genes expanded its functional repertoire beyond the nervous system.\",\n      \"evidence\": \"Adenoviral CUX2 overexpression in male liver; siRNA knockdown in female liver; CUX2 ChIP-seq; transcriptomic analysis\",\n      \"pmids\": [\"22966202\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Upstream signals conferring female-specific CUX2 expression not fully defined\", \"Whether CUX2 liver function is relevant to metabolic physiology not tested\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Showing that CUX2 Cut repeats directly stimulate OGG1 glycosylase/AP lyase activity revealed a non-transcriptional function in oxidative DNA base excision repair, establishing a dual role for CUX2 in both transcription and genome maintenance.\",\n      \"evidence\": \"In vitro reconstitution with purified OGG1 and CUX2 Cut repeat domains; CUX2 knockdown in embryonic cortical neurons; ectopic expression rescue\",\n      \"pmids\": [\"26221032\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether CUX2 participates in BER in vivo at endogenous expression levels not shown with structural detail\", \"Physical basis of CUX2-OGG1 interaction not structurally resolved\"]\n    },\n    {\n      \"year\": 2015,\n      \"claim\": \"Establishing that CUX2 competes with HNF6 for overlapping genomic binding sites provided a concrete mechanism for how CUX2 modulates sex-biased hepatic transcription through competitive DNA occupancy.\",\n      \"evidence\": \"In vitro EMSA; ChIP-seq cistrome overlap analysis; cell-based reporter assays\",\n      \"pmids\": [\"26218442\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Dynamic in vivo competition kinetics not characterized\", \"Whether STAT5 chromatin remodeling is upstream or parallel to CUX2/HNF6 competition unresolved\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Identification of CUX2-CASP physical interaction and the demonstration that CUX2 loss enhances glutamatergic transmission and seizure susceptibility linked CUX2 to excitatory synapse regulation and epilepsy-relevant phenotypes.\",\n      \"evidence\": \"Co-immunoprecipitation; Cux2 knockout mouse electrophysiology; kainate seizure model; human CUX2 variant localization studies\",\n      \"pmids\": [\"35581205\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"CUX2-CASP interaction not validated by reciprocal co-IP or in vivo proximity labeling\", \"Mechanism by which CUX2 restrains excitatory neuron number unknown\", \"Causal role of human CUX2 variants in epilepsy not established by genetic segregation\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Direct transcriptional activation of ADCY1 and KDM5B by CUX2 extended the catalog of direct target promoters and linked CUX2 to disease-relevant signaling in glioma and breast cancer contexts.\",\n      \"evidence\": \"ChIP and dual-luciferase reporter assays; loss- and gain-of-function in glioma and breast cancer cell lines; xenograft models\",\n      \"pmids\": [\"36242624\", \"35881915\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"CUX2 activation function at these promoters contrasts with its originally defined repressor role—context-dependent cofactors not identified\", \"Relevance of these axes to normal physiology unclear\"]\n    },\n    {\n      \"year\": 2026,\n      \"claim\": \"Demonstrating that CUX2 is essential for L2/3 cortical neuron resilience to DNA damage during neuroinflammation unified its transcription factor and DNA repair functions into a neuroprotective mechanism with disease relevance.\",\n      \"evidence\": \"Cux2 knockout mice in demyelination and pan-cortical inflammation models; in vitro interferon-γ treatment; DNA damage quantification and neuronal survival assays\",\n      \"pmids\": [\"41922773\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Relative contribution of transcriptional versus direct OGG1-stimulatory functions to neuroprotection not dissected\", \"Whether CUX2-dependent resilience extends to other neurodegenerative conditions not tested\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"The structural basis of CUX2's rapid/transient DNA binding, the cofactors determining whether CUX2 activates versus represses transcription in different cell types, and the relative contributions of its transcriptional versus DNA repair functions to neuronal survival remain unresolved.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"High\",\n      \"gaps\": [\"No high-resolution structure of CUX2 bound to DNA\", \"Cofactors switching CUX2 from repressor to activator not identified\", \"Relative contribution of BER stimulation versus transcriptional regulation to neuroprotection not separated genetically\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [0, 1, 3, 7, 10, 14, 15]},\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [1, 3, 7, 14, 15]},\n      {\"term_id\": \"GO:0140097\", \"supporting_discovery_ids\": [9]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [0, 3, 7, 9, 10]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"GO:0074160\", \"supporting_discovery_ids\": [1, 3, 7, 14, 15]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [2, 3, 4, 5, 6]},\n      {\"term_id\": \"R-HSA-73894\", \"supporting_discovery_ids\": [9, 16]},\n      {\"term_id\": \"R-HSA-1640170\", \"supporting_discovery_ids\": [2, 3]}\n    ],\n    \"complexes\": [],\n    \"partners\": [\"CUX1\", \"CASP\", \"OGG1\", \"HNF6\"],\n    \"other_free_text\": []\n  }\n}\n```"}