{"gene":"KLF7","run_date":"2026-06-10T02:59:49","timeline":{"discoveries":[{"year":2005,"finding":"KLF7 transcriptionally activates the promoter of p21waf/cip (CDKN1A) in neuronal cells; loss of KLF7 in mice leads to significant downregulation of p21waf/cip and p27kip1 in olfactory epithelium, and cotransfection experiments demonstrated KLF7 can transactivate a reporter driven by the proximal p27kip1 promoter.","method":"Mouse knockout (Klf7-/-), in situ hybridization, immunoblot, cotransfection/luciferase reporter assay","journal":"Molecular and cellular biology","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic loss-of-function in mice plus orthogonal cotransfection/reporter assays, replicated across multiple neuronal contexts","pmids":["15964824"],"is_preprint":false},{"year":2001,"finding":"Overexpression of KLF7 in cultured fibroblasts and neuroblastoma cells represses cyclin D1, activates p21, and leads to G1 growth arrest, indicating KLF7 regulates cell cycle entry.","method":"Overexpression in cell culture, cell cycle analysis","journal":"Developmental biology","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — single lab, gain-of-function in two different cell types, no structural or mutagenesis confirmation","pmids":["11336497"],"is_preprint":false},{"year":2006,"finding":"KLF7 directly binds CACCC motifs in the promoters of OMP (olfactory marker protein) and L1 (adhesion molecule) to activate their transcription in differentiating olfactory sensory neurons, as established by cell transfection and microarray profiling of Klf7-/- mice.","method":"DNA microarray (Klf7-/- vs wild-type olfactory neurons), cell transfection/promoter assays, CACCC-motif binding","journal":"Gene","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genetic model combined with promoter transfection assays, single lab","pmids":["17123745"],"is_preprint":false},{"year":2006,"finding":"Brn3a and KLF7 synergistically activate the TrkA enhancer in vitro, and genetic double-knockout (Brn3a-/-;Klf7-/-) mice show severe reduction of TrkA expression at E12.5 and complete loss of Trk+ neurons at birth, demonstrating cooperative transcriptional regulation of TrkA.","method":"In vitro transcriptional synergy assay, double-mutant genetic epistasis (Brn3a-/-;Klf7-/- mice), immunohistochemistry","journal":"Developmental biology","confidence":"High","confidence_rationale":"Tier 1-2 / Strong — double genetic knockout epistasis combined with in vitro synergy assay; clear phenotypic readout","pmids":["17011544"],"is_preprint":false},{"year":2007,"finding":"KLF7 binds to a novel regulatory element (TCaRE3) in the TRKB promoter in a sequence-specific manner (demonstrated by EMSA), and this element is required for Ca2+- and cAMP-stimulated TRKB transcription in neurons; mutations in TCaRE3 reduce basal expression by ≥80%.","method":"Electrophoretic mobility shift assay (EMSA), luciferase reporter with TCaRE3 mutations, Ca2+/cAMP stimulation assays","journal":"Molecular and cellular neurosciences","confidence":"High","confidence_rationale":"Tier 1 / Moderate — EMSA demonstrating direct binding, mutagenesis-based functional assays, conserved in human and mouse TRKB promoters","pmids":["17553693"],"is_preprint":false},{"year":2006,"finding":"MoKA, a novel F-box-containing protein, physically interacts with KLF7 and stimulates its transcriptional activity. MoKA nuclear localization is mediated by one specific NLS, while three separate sequences mediate cytoplasmic accumulation including one CRM1-dependent leucine-rich NES and two CRM1-independent export signals; the major activation domain of MoKA maps to a highly acidic sequence.","method":"Co-IP (MoKA–KLF7 interaction), forced expression of NLS/NES fusion proteins in mammalian cells, GAL4 chimeric transcriptional assays, leptomycin B (CRM1 inhibitor) treatment","journal":"Nucleic acids research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — reciprocal functional assays with NLS/NES deletions and GAL4 reporter, single lab","pmids":["16990251"],"is_preprint":false},{"year":2010,"finding":"KLF7 is required for differentiation of neuroectodermal and mesodermal cell lineages: shRNA-mediated silencing of KLF7 in PC12 cells downregulates MAP2 and TrkA; KLF7 inactivation in Klf7-null mice decreases BLBP/FABP7 in neural stem cells; Klf7 silencing impairs neuronal and cardiomyocytic differentiation of embryonic stem cells, and alters adipogenic and osteogenic potential of mouse embryonic fibroblasts.","method":"shRNA-mediated KLF7 silencing, Klf7-null mouse neural stem cells, embryonic stem cell differentiation assays, immunoblot","journal":"Experimental cell research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — multiple cell types and lineages tested by loss-of-function, single lab, no mutagenesis or structural confirmation","pmids":["20580711"],"is_preprint":false},{"year":2016,"finding":"KLF7 functions as a key mediator of TGF-β and Notch3 signaling-induced satellite cell quiescence and myoblast arrest; KLF7 is upregulated in quiescent satellite cells, and its knockdown promotes activation. The quiescence-promoting activity of KLF7 depends on p21 and on acetylation of Lys227 and/or Lys231 in the KLF7 DNA-binding domain.","method":"KLF7 knockdown/overexpression in satellite cells, epistasis with TGF-β and Notch3 signaling, acetylation mutant analysis (K227/K231)","journal":"Stem cells","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — epistasis with signaling pathways plus acetylation-site mutagenesis, single lab","pmids":["26930448"],"is_preprint":false},{"year":2019,"finding":"SCF-Fbxw7 ubiquitin ligase complex polyubiquitylates KLF7 for proteasomal degradation in a manner dependent on GSK-3-mediated phosphorylation of a Cdc4 phosphodegron (CPD) on KLF7; depletion of Fbxw7 stabilizes KLF7, and Fbxw7 overexpression downregulates the KLF7 target p21Cip1 in neuronal cells.","method":"DiPIUS proteomics screen, Co-IP (KLF7–Fbxw7 interaction), polyubiquitylation assay, CPD mutant analysis, GSK-3 inhibitor treatment, half-life measurement","journal":"Genes to cells","confidence":"High","confidence_rationale":"Tier 1 / Moderate — in vitro ubiquitylation reconstitution combined with CPD mutagenesis and GSK-3 inhibitor epistasis, single lab with multiple orthogonal methods","pmids":["30838725"],"is_preprint":false},{"year":2018,"finding":"KLF7 transcriptionally activates IL-6 by binding to its promoter region, acting downstream of TLR4 in palmitic acid (PA)-stimulated adipocytes; PA → TLR4 → KLF7 → NF-κB/IL-6 pathway established by luciferase reporter assay and siRNA knockdown experiments.","method":"Luciferase reporter assay (IL-6 promoter), KLF7 overexpression/knockdown, TLR4 manipulation, qRT-PCR, Western blot","journal":"Mediators of inflammation","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — promoter reporter assay plus epistatic manipulations of TLR4 and KLF7, single lab","pmids":["30598636"],"is_preprint":false},{"year":2022,"finding":"p65 (NF-κB subunit) transcriptionally upregulates KLF7 expression via direct binding to the KLF7 promoter in the palmitic acid/GPR40/GPR120-NF-κB pathway, demonstrated by luciferase reporter gene assay and ChIP assay.","method":"Luciferase reporter gene assay, chromatin immunoprecipitation (ChIP), GPR40/GPR120 blocker treatment in vivo and in vitro","journal":"Nutrition & diabetes","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and luciferase reporter orthogonally confirm p65 binding to KLF7 promoter, single lab","pmids":["35443706"],"is_preprint":false},{"year":2020,"finding":"KLF7 maintains Golgi complex integrity by transcriptionally sustaining DLG3 expression; KLF7 knockdown reduces DLG3, causing Golgi fragmentation, reduced protein glycosylation, and decreased secretion of chemokines that promote PDAC growth and metastasis. KLF7 also activates interferon-stimulated genes (ISGs) necessary for PDAC tumor growth.","method":"shRNA-mediated KLF7 knockdown, cell culture and xenograft mouse models, transcriptomic profiling, glycosylation assays","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — loss-of-function in vitro and in vivo with multiple downstream phenotypic readouts, single lab","pmids":["32430335"],"is_preprint":false},{"year":2019,"finding":"KLF7 transcriptionally activates argininosuccinate lyase (ASL), promoting polyamine biosynthesis (a urea cycle metabolite) in glioma cells; KLF7 knockdown reduces ASL expression and polyamine levels, and ASL overexpression rescues KLF7-driven glioma growth.","method":"Luciferase reporter assay (ASL promoter), KLF7 knockdown/overexpression, polyamine metabolite measurement, rescue experiments","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — promoter reporter plus rescue epistasis, single lab, single study","pmids":["31018905"],"is_preprint":false},{"year":2021,"finding":"KLF7 transcriptionally activates VPS35, which then interacts with CCDC85C (confirmed by Co-IP), leading to activation of the β-catenin signaling pathway and promotion of HCC progression.","method":"ChIP-qPCR, luciferase reporter assay (VPS35 promoter), Co-IP (VPS35–CCDC85C), β-catenin inhibitor rescue, xenograft","journal":"Cell & bioscience","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP + luciferase + Co-IP in combination, single lab","pmids":["33858520"],"is_preprint":false},{"year":2023,"finding":"KLF7 promotes HCC metastasis by directly transactivating TLR4 and PTK2; HMGB1 upregulates KLF7 via TLR4/RAGE-PI3K-AKT-NF-κB signaling, forming an HMGB1-KLF7-TLR4 positive feedback loop, confirmed by luciferase reporter and ChIP assays.","method":"Luciferase reporter assay, ChIP assay, orthotopic xenograft, DEN/CCl4 HCC models, genetic depletion of KLF7","journal":"Theranostics","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and luciferase orthogonally confirm direct transcriptional activation of TLR4/PTK2, in vivo validation, single lab","pmids":["37554278"],"is_preprint":false},{"year":2023,"finding":"KLF7 simultaneously transcriptionally targets PFKL (rate-limiting glycolysis enzyme) and ACADL (key fatty acid oxidation enzyme) in cardiomyocytes; cardiac-specific KLF7 knockout causes adult concentric hypertrophy and overexpression causes infant eccentric hypertrophy; knockdown of PFKL or overexpression of ACADL partially rescues hypertrophy in KLF7-deficient mice.","method":"Cardiac-specific KLF7 knockout/overexpression mice, ChIP assay, luciferase reporter, rescue experiments with PFKL knockdown/ACADL overexpression","journal":"Nature communications","confidence":"High","confidence_rationale":"Tier 1-2 / Strong — cardiac-specific genetic models combined with ChIP/reporter for direct targets and epistatic rescue experiments in vivo","pmids":["36810848"],"is_preprint":false},{"year":2022,"finding":"KLF7 binds the HDAC4 promoter to transcriptionally activate HDAC4; HDAC4 then reduces H3 and H4 acetylation at the miR-148b promoter to suppress miR-148b-3p, thereby promoting NCOR1 transcription and limiting glucose metabolic reprogramming in macrophages.","method":"Dual-luciferase assay, ChIP assay (KLF7 binding to HDAC4 promoter, HDAC4 at miR-148b promoter), HDAC4 knockdown rescue, AS mouse model","journal":"Gerontology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and luciferase confirm direct HDAC4 promoter binding, epistatic rescue shows pathway position, single lab","pmids":["35439761"],"is_preprint":false},{"year":2023,"finding":"KLF7 promotes IL-6 expression via the PKCζ/NF-κB pathway in adipocytes; luciferase reporter and ChIP assays confirmed that KLF7 transcriptionally upregulates PKCζ expression; adipocyte-specific KLF7 knockout mice showed decreased PKCζ, p-IκB, p-p65, and IL-6 in epididymal white adipose tissue.","method":"Fat-conditional KLF7 knockout mice, luciferase reporter assay, ChIP assay (KLF7 at PKCζ promoter), Western blot, qRT-PCR","journal":"FASEB journal","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — conditional KO in vivo combined with ChIP/reporter to confirm direct transcriptional activation of PKCζ, single lab","pmids":["37342904"],"is_preprint":false},{"year":2024,"finding":"KLF7 directly binds and transcriptionally activates the IGF2BP2 promoter and its super-enhancer region in head and neck squamous cell carcinoma, shown by ChIP-qPCR and dual-luciferase reporter assays; KLF7 abundance positively correlates with IGF2BP2 expression.","method":"H3K27Ac ChIP-seq, ChIP-qPCR, dual-luciferase reporter assay, CRISPR/Cas9 gene editing, small-molecule inhibitor (JQ1)","journal":"Journal of experimental & clinical cancer research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP-seq and ChIP-qPCR plus reporter assay orthogonally confirm direct binding, single lab","pmids":["38443991"],"is_preprint":false},{"year":2022,"finding":"KLF7 promotes preadipocyte proliferation by transcriptionally activating CDKN3 via a binding site upstream of the CDKN3 gene; CDKN3 in turn activates Akt signaling, driving the G1/S cell cycle transition (confirmed by ChIP-seq, promoter truncation/deletion analysis, and Akt phosphorylation assays).","method":"KLF7 ChIP-seq, luciferase reporter with 5'-truncation and binding-site deletion, CDKN3 knockdown/overexpression, flow cytometry (cell cycle), Akt phosphorylation assay","journal":"Acta biochimica et biophysica Sinica","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP-seq plus promoter mutagenesis plus rescue epistasis, single lab, chicken preadipocyte model","pmids":["36269137"],"is_preprint":false},{"year":2023,"finding":"PU.1 directly binds KLF7 (confirmed by Co-IP and FRET) and enhances KLF7's transcriptional activation of CDKN3 in chicken preadipocytes; PU.1 overexpression inhibits preadipocyte differentiation and promotes proliferation.","method":"Co-immunoprecipitation, FRET assay, luciferase reporter (CDKN3 promoter), PU.1 overexpression/knockdown","journal":"Acta biochimica et biophysica Sinica","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct protein–protein interaction confirmed by Co-IP and FRET, functional consequences shown, single lab","pmids":["36647727"],"is_preprint":false},{"year":2017,"finding":"KLF7 promotes the corneal progenitor cell state and antagonizes KLF4's corneal differentiation-promoting activity; KLF7 was shown by ChIP-seq to occupy corneal epithelial enhancers enriched for KLF motifs.","method":"ChIP-seq (KLF7 occupancy), KLF7 knockdown in primary human corneal epithelial cells, gene expression analysis","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP-seq genome-wide binding with loss-of-function cellular phenotype, single lab","pmids":["28916725"],"is_preprint":false},{"year":2024,"finding":"KLF7 transcriptionally activates ALKBH5 by binding its promoter (confirmed by dual-luciferase and ChIP assays); ALKBH5 then reduces m6A modification of ACSL4 mRNA, decreasing ACSL4 protein and inhibiting ferroptosis in ox-LDL-treated endothelial cells.","method":"Dual-luciferase assay, ChIP assay, MeRIP assay for m6A modification of ACSL4, KLF7/ALKBH5 overexpression/knockdown, ferroptosis markers","journal":"Cytotechnology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP + reporter confirm direct promoter binding; MeRIP confirms m6A mechanism; single lab","pmids":["39435423"],"is_preprint":false},{"year":2024,"finding":"KLF7 directly binds and transcriptionally activates the SLC1A5 promoter in hepatocellular carcinoma cells, promoting tryptophan uptake and serotonin biosynthesis; increasing serotonin restores malignancy in KLF7-knockdown cells.","method":"ChIP assay (KLF7 at SLC1A5 promoter), KLF7 knockdown/overexpression, serotonin measurement, serotonin rescue experiment","journal":"Journal of cellular and molecular medicine","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP confirms direct binding, metabolite rescue confirms functional link, single lab","pmids":["39648156"],"is_preprint":false},{"year":2021,"finding":"GNA14 stimulates KLF7 expression in endometrial cancer cells, and KLF7 transcriptionally activates HAS2 (hyaluronan synthase 2); KLF7/HAS2 axis promotes UCEC cell proliferation and migration, with HAS2 knockdown reversing KLF7-driven oncogenic effects.","method":"GNA14/KLF7 knockdown/overexpression, RNA sequencing, qRT-PCR, Western blot, rescue experiments (HAS2 knockdown), xenograft","journal":"BMC cancer","confidence":"Low","confidence_rationale":"Tier 3 / Moderate — GNA14→KLF7 regulation shown by expression only (no direct binding assay for this step); HAS2 as KLF7 target inferred from RNA-seq without promoter binding confirmation; single lab","pmids":["33892667"],"is_preprint":false},{"year":2024,"finding":"KLF7 directly binds the promoter of PDGFB (at TGGGTGGAG motif), driving PDGFB transcription and secretion; secreted PDGFB activates MAPK/ERK, PI3K/AKT, and JAK/STAT3 pathways through PDGFRβ to promote colon adenocarcinoma progression.","method":"ChIP assay (KLF7 at PDGFB promoter), luciferase reporter, KLF7 knockdown/overexpression, in vitro and in vivo experiments, sunitinib pharmacological blockade","journal":"International journal of biological sciences","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP confirms direct promoter binding with defined motif, multiple downstream pathway readouts, single lab","pmids":["38164176"],"is_preprint":false},{"year":2022,"finding":"KLF7 directly binds the MKNK2 promoter to repress MKNK2 transcription (confirmed by ChIP and dual-luciferase assays), thereby suppressing HIF-1 signaling and M1 microglia polarization after ischemic stroke.","method":"ChIP assay, dual-luciferase reporter, KLF7 overexpression/knockdown, MCAO/R rat model, MKNK2 knockdown/overexpression","journal":"Brain and behavior","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP + reporter confirm direct repression of MKNK2 by KLF7, in vivo epistasis, single lab","pmids":["40923147"],"is_preprint":false},{"year":2024,"finding":"NRF1 binds to the KLF7 promoter to enhance KLF7 transcription; USP7 stabilizes NRF1 via deubiquitination; collectively USP7→NRF1→KLF7 axis protects neurons from inflammation and apoptosis after spinal cord injury (confirmed by Co-IP, ChIP, and dual-luciferase assays).","method":"Co-immunoprecipitation (USP7–NRF1), ChIP assay (NRF1 at KLF7 promoter), dual-luciferase reporter, KLF7/NRF1/USP7 knockdown/overexpression, SCI rat and LPS cell models","journal":"Neurological research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP + ChIP + reporter orthogonally confirm the pathway, single lab, two model systems","pmids":["39007840"],"is_preprint":false},{"year":2025,"finding":"KLF7 directly binds the promoters of AHNAK, AHNAK2, and GDPD5, regulating their expression and altering GTPase activity to induce neuroblastoma cell differentiation; KLF7 acts independently of the retinoic acid pathway and cooperatively with RA; silencing KLF7 promotes adrenergic-to-mesenchymal transition.","method":"ChIP assay (KLF7 at AHNAK/AHNAK2/GDPD5 promoters), KLF7 knockdown/overexpression, GTPase activity assay, RA co-treatment experiments, transcriptomic profiling","journal":"The FEBS journal","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP confirms direct binding to target promoters with functional consequences shown, single lab","pmids":["38924469"],"is_preprint":false},{"year":2025,"finding":"KLF7 deletion in hippocampal progenitors (Emx1-Cre;Klf7F/F mice) causes hippocampal shrinkage with disrupted neurogenesis, neuronal differentiation, and migration; transcriptomic profiling identified Draxin (a neural chemorepellent) as a direct downstream KLF7 target, and overexpression of Draxin rescued dentate gyrus granule cell migration defects in KLF7 mutant mice.","method":"Conditional knockout mice (Emx1-Cre;Klf7F/F), RNA-seq transcriptomic profiling, Draxin overexpression rescue, behavioral assays (anxiety, memory)","journal":"Development (Cambridge, England)","confidence":"High","confidence_rationale":"Tier 2 / Strong — conditional genetic KO with specific molecular target identification and in vivo epistatic rescue, single lab with multiple orthogonal readouts","pmids":["40762575"],"is_preprint":false},{"year":2025,"finding":"FOXO4 transcriptionally activates KLF7 by binding its promoter (confirmed by ChIP-qPCR and dual-luciferase assay); KLF7 in turn activates the TLR4/MyD88/NF-κB pathway to promote high-glucose-induced retinal pigment epithelial cell injury.","method":"ChIP-qPCR, dual-luciferase reporter (FOXO4 at KLF7 promoter), FOXO4/KLF7 knockdown/overexpression, NF-κB inhibitor (BAY 11-7085) epistasis, HG-challenged RPE cells","journal":"Applied biochemistry and biotechnology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and reporter confirm direct FOXO4 binding to KLF7 promoter, pharmacological epistasis confirms pathway, single lab","pmids":["41231402"],"is_preprint":false},{"year":2025,"finding":"MLL1 promotes KLF7 transcription through H3K4me3 modification at the KLF7 promoter in rheumatoid arthritis fibroblast-like synoviocytes; KLF7 then transcriptionally activates USP7; this MLL1/KLF7/USP7 axis promotes FLS proliferation and invasion.","method":"ChIP assay (MLL1 and H3K4me3 at KLF7 promoter; KLF7 at USP7 promoter), dual-luciferase assay, shRNA knockdown, CCK-8/Transwell assays","journal":"In vitro cellular & developmental biology. Animal","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP confirms epigenetic writing at KLF7 promoter and KLF7 binding at USP7 promoter, single lab, functional readout","pmids":["41483084"],"is_preprint":false},{"year":2024,"finding":"KLF7 directly binds and transcriptionally activates the ITGA2 promoter and super-enhancer in oral squamous cell carcinoma (confirmed by ChIP-seq and dual-luciferase assays); ITGA2, upon binding its ECM ligand type I collagen, activates PI3K-AKT, MAPK, and Hippo signaling to maintain cancer stem cell stemness.","method":"ChIP-seq (KLF7 at ITGA2 locus), dual-luciferase assay, ITGA2 knockdown, tumor sphere formation, flow cytometry, limiting dilution xenograft assay, TC-I 15 inhibitor treatment","journal":"Cell death & disease","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP-seq plus reporter confirm direct binding, multiple functional readouts, single lab","pmids":["40316546"],"is_preprint":false},{"year":2025,"finding":"KLF7 transcriptionally activates LOX (lysyl oxidase) in HNSCC cells (direct transcriptional activation), and LOX-driven ECM crosslinking stiffens the tumor microenvironment to recruit macrophages and suppress CD8+ T cell killing.","method":"KLF7 knockdown/overexpression, in vitro and in vivo (xenograft) experiments, LOX identified as direct KLF7 transcriptional target (described as 'bona fide target'), macrophage recruitment assays","journal":"Cancer letters","confidence":"Low","confidence_rationale":"Tier 3 / Weak — LOX described as bona fide transcriptional target but no explicit ChIP or reporter data stated in abstract; mechanism inferred from in vivo rescue and correlation, single lab","pmids":["41482204"],"is_preprint":false},{"year":2024,"finding":"KLF7 transcriptionally activates LIMK1 by binding its promoter (confirmed by ChIP and dual-luciferase assays); LIMK1 then physically interacts with SRPK1 (confirmed by GST pull-down and Co-IP) to promote SRPK1 phosphorylation, driving inflammation in LPS-treated alveolar epithelial cells.","method":"ChIP assay, dual-luciferase assay (KLF7 at LIMK1 promoter), GST pull-down and Co-IP (LIMK1–SRPK1 interaction), KLF7/LIMK1/SRPK1 knockdown/overexpression, ELISA","journal":"Central-European journal of immunology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP + reporter confirm promoter binding; GST pull-down + Co-IP confirm protein interaction; single lab","pmids":["42028385"],"is_preprint":false},{"year":2026,"finding":"KLF7 directly binds the PPP1R14C promoter to drive its transcription; PPP1R14C physically interacts with and inhibits the PP1 catalytic subunit, sustaining CDK1 hyperactivation and promoting lung squamous cell carcinoma proliferation and invasion.","method":"ChIP assay (KLF7 at PPP1R14C promoter), Co-IP (PPP1R14C–PP1), KLF7/PPP1R14C overexpression/knockdown, CDK1 pharmacological inhibition (rescue), in vivo tumorigenesis","journal":"Scientific reports","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and Co-IP confirm direct molecular interactions with functional rescue by CDK1 inhibitor, single lab","pmids":["41699008"],"is_preprint":false},{"year":2025,"finding":"KLF7 promotes colorectal cancer liver metastasis by transcriptionally activating TGFβ autocrine signaling, driving EMT; EGCG inhibits KLF7 transcriptional activity and suppresses TGFβ/EMT (confirmed by dual-luciferase reporter assays and in vitro/in vivo experiments).","method":"Dual-luciferase reporter assay, KLF7 knockdown/overexpression, in vitro and in vivo metastasis assays, EGCG inhibitor treatment","journal":"Cancer letters","confidence":"Low","confidence_rationale":"Tier 3 / Weak — reporter assay shows transcriptional activity; TGFβ target specificity not confirmed by direct promoter ChIP in abstract; single lab","pmids":["41213461"],"is_preprint":false},{"year":2025,"finding":"KLF7 is highly expressed in conventional and naive human pluripotent stem cells and can replace KLF4 in OSKM somatic reprogramming; forced KLF7 expression induces upregulation of naive pluripotency markers and enables chemical resetting to naive PSCs; CRISPRi-mediated KLF7 silencing reduces efficiency of chemical resetting without affecting maintenance of conventional PSCs.","method":"KLF7 overexpression replacing KLF4 in OSKM reprogramming, CRISPRi-mediated KLF7 silencing, transcriptome analysis, naive/primed PSC culture and chemical resetting assays","journal":"EMBO reports","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — functional replacement of KLF4 plus CRISPRi loss-of-function with specific pluripotency phenotype, single lab, multiple orthogonal approaches","pmids":["41094238"],"is_preprint":false},{"year":2025,"finding":"UKLF/KLF7 transcriptionally activates SLC39A4 expression; PCBP2 binds the 3'-UTR of UKLF mRNA to enhance its stability; together the PCBP2/UKLF/SLC39A4 pathway promotes colorectal cancer progression.","method":"ChIP assay/luciferase assay (KLF7 at SLC39A4 promoter), RNA-binding protein assay (PCBP2 binding to UKLF 3'-UTR), KLF7/PCBP2/SLC39A4 knockdown, xenograft","journal":"Biochimica et biophysica acta. Molecular cell research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct transcriptional target confirmed by ChIP/reporter; mRNA stabilization by PCBP2 confirmed; single lab","pmids":["38768927"],"is_preprint":false},{"year":2025,"finding":"KLF7 transcriptionally represses MKNK2 and promotes PDE4 repression: in PCOS granulosa cells, KLF7 binds the PDE4 promoter and suppresses PDE4 transcription (confirmed by ChIP and dual-luciferase assay); KLF7 overexpression promotes granulosa cell proliferation and inhibits apoptosis, and PDE4 overexpression reverses these effects.","method":"ChIP assay, dual-luciferase reporter (KLF7 at PDE4 promoter), KLF7/PDE4 overexpression, CCK-8, TUNEL, EdU assays in DHT-treated HGL5 cells","journal":"Endocrine connections","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and reporter confirm direct repression of PDE4 by KLF7; epistatic rescue confirms pathway; single lab","pmids":["41071839"],"is_preprint":false},{"year":2026,"finding":"In hypopharyngeal squamous cell carcinoma, HDAC6 removes H3K9ac marks at the KLF7 promoter to suppress KLF7 expression; when HDAC6 is downregulated in HPSCC, KLF7 is upregulated and transcriptionally induces THBS1, which activates p38 MAPK signaling to drive EMT and lung metastasis.","method":"ChIP assay (H3K9ac at KLF7 promoter; KLF7 at THBS1 promoter), HDAC6/KLF7/THBS1 lentiviral knockdown/overexpression, EdU/colony formation/Transwell assays, in vivo lung metastasis (tail-vein injection), Western blot for EMT markers","journal":"iScience","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP confirms HDAC6-mediated histone modification at KLF7 promoter and KLF7 binding at THBS1 promoter; in vivo rescue validates axis; single lab","pmids":["41732256"],"is_preprint":false}],"current_model":"KLF7 is a zinc-finger Krüppel-like transcription factor that binds CACCC motifs in target gene promoters to activate or repress transcription in a cell-context-dependent manner; its established transcriptional targets include p21/CDKN1A, p27/CDKN1B, TrkA, TrkB (via TCaRE3), OMP, L1CAM, PFKL, ACADL, ASL, DLG3, TLR4, PTK2, VPS35, SLC1A5, ALKBH5, PDGFB, ITGA2, HDAC4, PKCζ, IL-6, MKNK2, LIMK1, LOX, PPP1R14C, SLC39A4, PDE4, THBS1, and Draxin; its protein stability is regulated by SCF-Fbxw7-mediated polyubiquitylation that requires prior GSK-3-dependent phosphorylation of its Cdc4 phosphodegron, while its co-activator MoKA enhances its transcriptional output and undergoes regulated nuclear-cytoplasmic shuttling; KLF7 activity is modulated upstream by NF-κB (p65), CREB, NRF1/USP7, GNA14, HMGB1-TLR4-AKT, MLL1-H3K4me3, and GATA2/3; collectively, KLF7 controls neuronal morphogenesis, axon outgrowth, satellite cell quiescence, cardiac metabolic balance, adipogenesis, and stem cell pluripotency, and is oncogenic in multiple cancer types."},"narrative":{"mechanistic_narrative":"KLF7 is a Krüppel-like zinc-finger transcription factor that binds CACCC motifs and KLF-type sites in target gene promoters and enhancers to activate or repress transcription, controlling cell-cycle exit, neuronal morphogenesis, lineage differentiation, and metabolic homeostasis [PMID:15964824, PMID:17123745, PMID:17553693]. In neural and proliferative contexts it activates the CDK inhibitors p21/CDKN1A and p27/CDKN1B and represses cyclin D1 to enforce G1 arrest, a function central to its control of olfactory neuron differentiation and satellite-cell quiescence [PMID:15964824, PMID:11336497, PMID:26930448]. During neuronal development it directly drives genes required for axon outgrowth and identity, including OMP and L1CAM, the neurotrophin receptor TrkA (acting synergistically with Brn3a) and TrkB (via the calcium/cAMP-responsive TCaRE3 element), and the chemorepellent Draxin, whose loss underlies hippocampal neurogenesis and granule-cell migration defects in conditional knockouts [PMID:17123745, PMID:17011544, PMID:17553693, PMID:40762575]. KLF7 is broadly required for differentiation of neuroectodermal, mesodermal, and pluripotent lineages and can substitute for KLF4 in reprogramming to naive pluripotency [PMID:20580711, PMID:41094238]. In the heart it simultaneously tunes glycolysis and fatty-acid oxidation by transactivating PFKL and ACADL, with cardiac-specific gain or loss producing distinct hypertrophic phenotypes [PMID:36810848]. Across diverse cancers KLF7 acts as an oncogenic transcriptional driver, directly activating metabolic, signaling, and ECM-remodeling targets such as SLC1A5, ASL, PDGFB, ITGA2, LOX, IGF2BP2, and VPS35 to promote proliferation, metastasis, and stemness [PMID:32430335, PMID:31018905, PMID:33858520, PMID:39648156, PMID:38164176, PMID:40316546]. KLF7 protein stability is controlled by SCF-Fbxw7-mediated polyubiquitylation that requires prior GSK-3-dependent phosphorylation of its Cdc4 phosphodegron, and its abundance is set upstream by transcriptional inputs including NF-κB/p65, NRF1, FOXO4, PU.1, and MLL1-deposited H3K4me3, while its co-activator MoKA binds KLF7 and stimulates its output [PMID:16990251, PMID:30838725, PMID:35443706, PMID:36647727, PMID:39007840, PMID:41231402, PMID:41483084].","teleology":[{"year":2001,"claim":"Established that KLF7 is not merely a developmental marker but an active regulator of cell-cycle entry, linking it mechanistically to growth control.","evidence":"KLF7 overexpression in fibroblasts and neuroblastoma cells with cell-cycle analysis","pmids":["11336497"],"confidence":"Medium","gaps":["Gain-of-function only, no direct promoter binding shown for cyclin D1 or p21","Single lab, no in vivo confirmation"]},{"year":2005,"claim":"Identified direct transcriptional targets (p21/CDKN1A, p27/CDKN1B) explaining how KLF7 enforces cell-cycle exit during neuronal differentiation in vivo.","evidence":"Klf7-/- mice, in situ hybridization, immunoblot, cotransfection/luciferase reporter assays","pmids":["15964824"],"confidence":"High","gaps":["Whether p21/p27 activation is direct via defined CACCC sites not fully mapped","Tissue specificity of cofactor requirements unresolved"]},{"year":2006,"claim":"Demonstrated sequence-specific CACCC-motif binding to neuronal differentiation and adhesion gene promoters (OMP, L1CAM) and cooperative control of TrkA with Brn3a, establishing KLF7 as a direct transcriptional driver of neuronal identity and innervation.","evidence":"Microarray of Klf7-/- neurons, promoter transfection assays, Brn3a-/-;Klf7-/- double-knockout epistasis, IHC","pmids":["17123745","17011544"],"confidence":"High","gaps":["Direct genome-wide binding not yet mapped at this stage","Mechanism of synergy with Brn3a at the molecular level unresolved"]},{"year":2007,"claim":"Defined a novel KLF7-bound regulatory element (TCaRE3) coupling KLF7 to activity-dependent (Ca2+/cAMP) TrkB transcription, connecting KLF7 to neuronal signal-responsive gene expression.","evidence":"EMSA for direct binding, TCaRE3 mutagenesis in luciferase reporters, Ca2+/cAMP stimulation","pmids":["17553693"],"confidence":"High","gaps":["Signaling input that converts Ca2+/cAMP into KLF7 occupancy not defined","Post-translational modifications regulating TCaRE3 binding unknown"]},{"year":2006,"claim":"Identified MoKA as a physical KLF7 partner and co-activator with regulated nuclear-cytoplasmic shuttling, providing a mechanism for tuning KLF7 transcriptional output.","evidence":"Co-IP, NLS/NES fusion-protein expression, GAL4 chimeric reporter assays, leptomycin B treatment","pmids":["16990251"],"confidence":"Medium","gaps":["Physiological contexts where MoKA shuttling controls KLF7 activity not established","Endogenous stoichiometry and reciprocal validation limited"]},{"year":2010,"claim":"Broadened KLF7 function beyond neurons by showing it is required for differentiation across neuroectodermal, cardiomyocytic, adipogenic, and osteogenic lineages.","evidence":"shRNA silencing in PC12 cells, Klf7-null neural stem cells, ESC differentiation assays, MEF lineage assays","pmids":["20580711"],"confidence":"Medium","gaps":["Direct targets in each lineage not defined","Whether effects are cell-autonomous unresolved"]},{"year":2016,"claim":"Placed KLF7 downstream of TGF-β and Notch3 as a p21-dependent effector of satellite-cell quiescence, and implicated DNA-binding-domain acetylation (K227/K231) as a regulatory switch.","evidence":"KLF7 knockdown/overexpression in satellite cells, signaling epistasis, acetylation-mutant analysis","pmids":["26930448"],"confidence":"Medium","gaps":["Acetyltransferase/deacetylase responsible for K227/K231 not identified","Direct effect of acetylation on DNA binding affinity not quantified"]},{"year":2019,"claim":"Defined the principal mechanism controlling KLF7 protein abundance: SCF-Fbxw7 polyubiquitylation gated by GSK-3 phosphorylation of a Cdc4 phosphodegron.","evidence":"DiPIUS proteomics, Co-IP, in vitro polyubiquitylation, CPD mutagenesis, GSK-3 inhibitor epistasis, half-life measurement","pmids":["30838725"],"confidence":"High","gaps":["Signals that activate GSK-3-dependent CPD phosphorylation in vivo not defined","Whether degradation is regulated differentially across tissues unknown"]},{"year":2018,"claim":"Established KLF7 as a node in metabolic inflammation, transactivating IL-6 downstream of TLR4 in palmitic-acid-stimulated adipocytes.","evidence":"IL-6 promoter luciferase reporter, KLF7 and TLR4 manipulation, qRT-PCR, Western blot","pmids":["30598636"],"confidence":"Medium","gaps":["Direct ChIP for KLF7 at IL-6 promoter not shown","Relationship to NF-κB occupancy unresolved"]},{"year":2022,"claim":"Identified upstream transcriptional control of KLF7 by NF-κB/p65 in lipotoxic adipose signaling, establishing a feed-forward inflammatory circuit.","evidence":"ChIP and luciferase reporter for p65 at KLF7 promoter, GPR40/GPR120 blockade in vivo and in vitro","pmids":["35443706"],"confidence":"Medium","gaps":["Whether KLF7 reciprocally amplifies NF-κB in vivo not fully dissected","Tissue-specific dependence unresolved"]},{"year":2023,"claim":"Showed KLF7 sets cardiac substrate balance by directly co-regulating glycolysis (PFKL) and fatty-acid oxidation (ACADL), with dosage controlling hypertrophy phenotype.","evidence":"Cardiac-specific Klf7 knockout/overexpression mice, ChIP, luciferase reporter, PFKL/ACADL rescue","pmids":["36810848"],"confidence":"High","gaps":["How a single factor coordinately tunes two opposing metabolic genes mechanistically unresolved","Developmental-stage specificity of opposite phenotypes not fully explained"]},{"year":2020,"claim":"Linked KLF7 to organelle integrity and tumor secretome, sustaining DLG3 to maintain Golgi structure, glycosylation, and chemokine secretion in PDAC.","evidence":"shRNA knockdown, xenograft, transcriptomics, glycosylation assays","pmids":["32430335"],"confidence":"Medium","gaps":["Direct binding to DLG3 promoter not mapped","Mechanism connecting DLG3 to Golgi integrity unresolved"]},{"year":null,"claim":"A large body of cancer studies establishes KLF7 as a context-dependent oncogenic transcription factor driving metabolic, signaling, ECM, and stemness programs, but a unifying determinant of its activator-versus-repressor behavior and cofactor selection across tissues remains undefined.","evidence":"ChIP/ChIP-seq, reporter assays, knockdown/overexpression and xenografts across HCC, glioma, colorectal, oral/head-and-neck, lung, endometrial, and neuroblastoma models defining direct targets including ASL, VPS35, TLR4/PTK2, HDAC4, PKCζ, SLC1A5, IGF2BP2, CDKN3, ALKBH5, PDGFB, MKNK2, ITGA2, LIMK1, PPP1R14C, SLC39A4, PDE4, THBS1, AHNAK/AHNAK2/GDPD5","pmids":[],"confidence":"Medium","gaps":["No structural model of KLF7 bound to DNA or cofactors","Rules governing activation versus repression of targets unknown","Whether the diverse cancer targets reflect distinct cofactor complexes is unresolved"]}],"mechanism_profile":{"molecular_activity":[{"term_id":"GO:0140110","term_label":"transcription regulator activity","supporting_discovery_ids":[0,2,3,4,15,25,32]},{"term_id":"GO:0003677","term_label":"DNA binding","supporting_discovery_ids":[2,4,25]}],"localization":[{"term_id":"GO:0005634","term_label":"nucleus","supporting_discovery_ids":[5]}],"pathway":[{"term_id":"R-HSA-74160","term_label":"Gene expression (Transcription)","supporting_discovery_ids":[0,2,4,15]},{"term_id":"R-HSA-1640170","term_label":"Cell Cycle","supporting_discovery_ids":[0,1,7,19]},{"term_id":"R-HSA-1266738","term_label":"Developmental Biology","supporting_discovery_ids":[3,6,29,37]},{"term_id":"R-HSA-1643685","term_label":"Disease","supporting_discovery_ids":[11,13,14,23,25,32]},{"term_id":"R-HSA-392499","term_label":"Metabolism of proteins","supporting_discovery_ids":[8]},{"term_id":"R-HSA-1430728","term_label":"Metabolism","supporting_discovery_ids":[12,15,23]}],"complexes":[],"partners":["MOKA","FBXW7","BRN3A","PU.1","NRF1","FOXO4"],"other_free_text":[]}},"prefetch_data":{"uniprot":{"accession":"O75840","full_name":"Krueppel-like factor 7","aliases":["Ubiquitous krueppel-like factor"],"length_aa":302,"mass_kda":33.4,"function":"Transcriptional factor (PubMed:16339272, PubMed:9774444). Plays a critical role in neuronal morphogenesis and survival of sensory neurons (By similarity). Represses the corneal epithelium differentiation (PubMed:28916725). Also acts as a metabolic regulator, by modulating insulin sensitivity in pancreatic beta cells and skeletal muscle cells (PubMed:16339272). Inhibits transcriptional inducers of adipogenesis and has a repressive role in the expression of several adipokines, including leptin (PubMed:16339272)","subcellular_location":"Nucleus","url":"https://www.uniprot.org/uniprotkb/O75840/entry"},"depmap":{"release":"DepMap","has_data":true,"is_common_essential":false,"resolved_as":"","url":"https://depmap.org/portal/gene/KLF7","classification":"Not Classified","n_dependent_lines":129,"n_total_lines":1208,"dependency_fraction":0.10678807947019868},"opencell":{"profiled":false,"resolved_as":"","ensg_id":"","cell_line_id":"","localizations":[],"interactors":[],"url":"https://opencell.sf.czbiohub.org/search/KLF7","total_profiled":1310},"omim":[{"mim_id":"618976","title":"MYOCARDIN-INDUCED SMOOTH MUSCLE LONG NONCODING RNA, INDUCER OF DIFFERENTIATION; MYOSLID","url":"https://www.omim.org/entry/618976"},{"mim_id":"615575","title":"NEURONOPATHY, DISTAL HEREDITARY MOTOR, AUTOSOMAL DOMINANT 6; HMND6","url":"https://www.omim.org/entry/615575"},{"mim_id":"608533","title":"F-BOX ONLY PROTEIN 38; FBXO38","url":"https://www.omim.org/entry/608533"},{"mim_id":"604865","title":"KLF TRANSCRIPTION FACTOR 7; KLF7","url":"https://www.omim.org/entry/604865"},{"mim_id":"602253","title":"KLF TRANSCRIPTION FACTOR 4; KLF4","url":"https://www.omim.org/entry/602253"}],"hpa":{"profiled":true,"resolved_as":"","reliability":"Supported","locations":[{"location":"Nucleoplasm","reliability":"Supported"},{"location":"Cytosol","reliability":"Additional"}],"tissue_specificity":"Low tissue specificity","tissue_distribution":"Detected in all","driving_tissues":[],"url":"https://www.proteinatlas.org/search/KLF7"},"hgnc":{"alias_symbol":["UKLF"],"prev_symbol":[]},"alphafold":{"accession":"O75840","domains":[{"cath_id":"3.30.160.60","chopping":"247-302","consensus_level":"medium","plddt":81.8137,"start":247,"end":302},{"cath_id":"3.30.160","chopping":"217-246","consensus_level":"medium","plddt":82.7403,"start":217,"end":246}],"viewer_url":"https://alphafold.ebi.ac.uk/entry/O75840","model_url":"https://alphafold.ebi.ac.uk/files/AF-O75840-F1-model_v6.cif","pae_url":"https://alphafold.ebi.ac.uk/files/AF-O75840-F1-predicted_aligned_error_v6.png","plddt_mean":53.38},"mouse_models":{"mgi_url":"https://www.informatics.jax.org/marker/summary?nomen=KLF7","jax_strain_url":"https://www.jax.org/strain/search?query=KLF7"},"sequence":{"accession":"O75840","fasta_url":"https://rest.uniprot.org/uniprotkb/O75840.fasta","uniprot_url":"https://www.uniprot.org/uniprotkb/O75840/entry","alphafold_viewer_url":"https://alphafold.ebi.ac.uk/entry/O75840"}},"corpus_meta":[{"pmid":"15964824","id":"PMC_15964824","title":"Transcription 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loss of KLF7 in mice leads to significant downregulation of p21waf/cip and p27kip1 in olfactory epithelium, and cotransfection experiments demonstrated KLF7 can transactivate a reporter driven by the proximal p27kip1 promoter.\",\n      \"method\": \"Mouse knockout (Klf7-/-), in situ hybridization, immunoblot, cotransfection/luciferase reporter assay\",\n      \"journal\": \"Molecular and cellular biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic loss-of-function in mice plus orthogonal cotransfection/reporter assays, replicated across multiple neuronal contexts\",\n      \"pmids\": [\"15964824\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2001,\n      \"finding\": \"Overexpression of KLF7 in cultured fibroblasts and neuroblastoma cells represses cyclin D1, activates p21, and leads to G1 growth arrest, indicating KLF7 regulates cell cycle entry.\",\n      \"method\": \"Overexpression in cell culture, cell cycle analysis\",\n      \"journal\": \"Developmental biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — single lab, gain-of-function in two different cell types, no structural or mutagenesis confirmation\",\n      \"pmids\": [\"11336497\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"KLF7 directly binds CACCC motifs in the promoters of OMP (olfactory marker protein) and L1 (adhesion molecule) to activate their transcription in differentiating olfactory sensory neurons, as established by cell transfection and microarray profiling of Klf7-/- mice.\",\n      \"method\": \"DNA microarray (Klf7-/- vs wild-type olfactory neurons), cell transfection/promoter assays, CACCC-motif binding\",\n      \"journal\": \"Gene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic model combined with promoter transfection assays, single lab\",\n      \"pmids\": [\"17123745\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"Brn3a and KLF7 synergistically activate the TrkA enhancer in vitro, and genetic double-knockout (Brn3a-/-;Klf7-/-) mice show severe reduction of TrkA expression at E12.5 and complete loss of Trk+ neurons at birth, demonstrating cooperative transcriptional regulation of TrkA.\",\n      \"method\": \"In vitro transcriptional synergy assay, double-mutant genetic epistasis (Brn3a-/-;Klf7-/- mice), immunohistochemistry\",\n      \"journal\": \"Developmental biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Strong — double genetic knockout epistasis combined with in vitro synergy assay; clear phenotypic readout\",\n      \"pmids\": [\"17011544\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"KLF7 binds to a novel regulatory element (TCaRE3) in the TRKB promoter in a sequence-specific manner (demonstrated by EMSA), and this element is required for Ca2+- and cAMP-stimulated TRKB transcription in neurons; mutations in TCaRE3 reduce basal expression by ≥80%.\",\n      \"method\": \"Electrophoretic mobility shift assay (EMSA), luciferase reporter with TCaRE3 mutations, Ca2+/cAMP stimulation assays\",\n      \"journal\": \"Molecular and cellular neurosciences\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — EMSA demonstrating direct binding, mutagenesis-based functional assays, conserved in human and mouse TRKB promoters\",\n      \"pmids\": [\"17553693\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"MoKA, a novel F-box-containing protein, physically interacts with KLF7 and stimulates its transcriptional activity. MoKA nuclear localization is mediated by one specific NLS, while three separate sequences mediate cytoplasmic accumulation including one CRM1-dependent leucine-rich NES and two CRM1-independent export signals; the major activation domain of MoKA maps to a highly acidic sequence.\",\n      \"method\": \"Co-IP (MoKA–KLF7 interaction), forced expression of NLS/NES fusion proteins in mammalian cells, GAL4 chimeric transcriptional assays, leptomycin B (CRM1 inhibitor) treatment\",\n      \"journal\": \"Nucleic acids research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal functional assays with NLS/NES deletions and GAL4 reporter, single lab\",\n      \"pmids\": [\"16990251\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"KLF7 is required for differentiation of neuroectodermal and mesodermal cell lineages: shRNA-mediated silencing of KLF7 in PC12 cells downregulates MAP2 and TrkA; KLF7 inactivation in Klf7-null mice decreases BLBP/FABP7 in neural stem cells; Klf7 silencing impairs neuronal and cardiomyocytic differentiation of embryonic stem cells, and alters adipogenic and osteogenic potential of mouse embryonic fibroblasts.\",\n      \"method\": \"shRNA-mediated KLF7 silencing, Klf7-null mouse neural stem cells, embryonic stem cell differentiation assays, immunoblot\",\n      \"journal\": \"Experimental cell research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — multiple cell types and lineages tested by loss-of-function, single lab, no mutagenesis or structural confirmation\",\n      \"pmids\": [\"20580711\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"KLF7 functions as a key mediator of TGF-β and Notch3 signaling-induced satellite cell quiescence and myoblast arrest; KLF7 is upregulated in quiescent satellite cells, and its knockdown promotes activation. The quiescence-promoting activity of KLF7 depends on p21 and on acetylation of Lys227 and/or Lys231 in the KLF7 DNA-binding domain.\",\n      \"method\": \"KLF7 knockdown/overexpression in satellite cells, epistasis with TGF-β and Notch3 signaling, acetylation mutant analysis (K227/K231)\",\n      \"journal\": \"Stem cells\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — epistasis with signaling pathways plus acetylation-site mutagenesis, single lab\",\n      \"pmids\": [\"26930448\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"SCF-Fbxw7 ubiquitin ligase complex polyubiquitylates KLF7 for proteasomal degradation in a manner dependent on GSK-3-mediated phosphorylation of a Cdc4 phosphodegron (CPD) on KLF7; depletion of Fbxw7 stabilizes KLF7, and Fbxw7 overexpression downregulates the KLF7 target p21Cip1 in neuronal cells.\",\n      \"method\": \"DiPIUS proteomics screen, Co-IP (KLF7–Fbxw7 interaction), polyubiquitylation assay, CPD mutant analysis, GSK-3 inhibitor treatment, half-life measurement\",\n      \"journal\": \"Genes to cells\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1 / Moderate — in vitro ubiquitylation reconstitution combined with CPD mutagenesis and GSK-3 inhibitor epistasis, single lab with multiple orthogonal methods\",\n      \"pmids\": [\"30838725\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"KLF7 transcriptionally activates IL-6 by binding to its promoter region, acting downstream of TLR4 in palmitic acid (PA)-stimulated adipocytes; PA → TLR4 → KLF7 → NF-κB/IL-6 pathway established by luciferase reporter assay and siRNA knockdown experiments.\",\n      \"method\": \"Luciferase reporter assay (IL-6 promoter), KLF7 overexpression/knockdown, TLR4 manipulation, qRT-PCR, Western blot\",\n      \"journal\": \"Mediators of inflammation\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — promoter reporter assay plus epistatic manipulations of TLR4 and KLF7, single lab\",\n      \"pmids\": [\"30598636\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"p65 (NF-κB subunit) transcriptionally upregulates KLF7 expression via direct binding to the KLF7 promoter in the palmitic acid/GPR40/GPR120-NF-κB pathway, demonstrated by luciferase reporter gene assay and ChIP assay.\",\n      \"method\": \"Luciferase reporter gene assay, chromatin immunoprecipitation (ChIP), GPR40/GPR120 blocker treatment in vivo and in vitro\",\n      \"journal\": \"Nutrition & diabetes\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and luciferase reporter orthogonally confirm p65 binding to KLF7 promoter, single lab\",\n      \"pmids\": [\"35443706\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"KLF7 maintains Golgi complex integrity by transcriptionally sustaining DLG3 expression; KLF7 knockdown reduces DLG3, causing Golgi fragmentation, reduced protein glycosylation, and decreased secretion of chemokines that promote PDAC growth and metastasis. KLF7 also activates interferon-stimulated genes (ISGs) necessary for PDAC tumor growth.\",\n      \"method\": \"shRNA-mediated KLF7 knockdown, cell culture and xenograft mouse models, transcriptomic profiling, glycosylation assays\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — loss-of-function in vitro and in vivo with multiple downstream phenotypic readouts, single lab\",\n      \"pmids\": [\"32430335\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"KLF7 transcriptionally activates argininosuccinate lyase (ASL), promoting polyamine biosynthesis (a urea cycle metabolite) in glioma cells; KLF7 knockdown reduces ASL expression and polyamine levels, and ASL overexpression rescues KLF7-driven glioma growth.\",\n      \"method\": \"Luciferase reporter assay (ASL promoter), KLF7 knockdown/overexpression, polyamine metabolite measurement, rescue experiments\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — promoter reporter plus rescue epistasis, single lab, single study\",\n      \"pmids\": [\"31018905\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"KLF7 transcriptionally activates VPS35, which then interacts with CCDC85C (confirmed by Co-IP), leading to activation of the β-catenin signaling pathway and promotion of HCC progression.\",\n      \"method\": \"ChIP-qPCR, luciferase reporter assay (VPS35 promoter), Co-IP (VPS35–CCDC85C), β-catenin inhibitor rescue, xenograft\",\n      \"journal\": \"Cell & bioscience\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP + luciferase + Co-IP in combination, single lab\",\n      \"pmids\": [\"33858520\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"KLF7 promotes HCC metastasis by directly transactivating TLR4 and PTK2; HMGB1 upregulates KLF7 via TLR4/RAGE-PI3K-AKT-NF-κB signaling, forming an HMGB1-KLF7-TLR4 positive feedback loop, confirmed by luciferase reporter and ChIP assays.\",\n      \"method\": \"Luciferase reporter assay, ChIP assay, orthotopic xenograft, DEN/CCl4 HCC models, genetic depletion of KLF7\",\n      \"journal\": \"Theranostics\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and luciferase orthogonally confirm direct transcriptional activation of TLR4/PTK2, in vivo validation, single lab\",\n      \"pmids\": [\"37554278\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"KLF7 simultaneously transcriptionally targets PFKL (rate-limiting glycolysis enzyme) and ACADL (key fatty acid oxidation enzyme) in cardiomyocytes; cardiac-specific KLF7 knockout causes adult concentric hypertrophy and overexpression causes infant eccentric hypertrophy; knockdown of PFKL or overexpression of ACADL partially rescues hypertrophy in KLF7-deficient mice.\",\n      \"method\": \"Cardiac-specific KLF7 knockout/overexpression mice, ChIP assay, luciferase reporter, rescue experiments with PFKL knockdown/ACADL overexpression\",\n      \"journal\": \"Nature communications\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 1-2 / Strong — cardiac-specific genetic models combined with ChIP/reporter for direct targets and epistatic rescue experiments in vivo\",\n      \"pmids\": [\"36810848\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"KLF7 binds the HDAC4 promoter to transcriptionally activate HDAC4; HDAC4 then reduces H3 and H4 acetylation at the miR-148b promoter to suppress miR-148b-3p, thereby promoting NCOR1 transcription and limiting glucose metabolic reprogramming in macrophages.\",\n      \"method\": \"Dual-luciferase assay, ChIP assay (KLF7 binding to HDAC4 promoter, HDAC4 at miR-148b promoter), HDAC4 knockdown rescue, AS mouse model\",\n      \"journal\": \"Gerontology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and luciferase confirm direct HDAC4 promoter binding, epistatic rescue shows pathway position, single lab\",\n      \"pmids\": [\"35439761\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"KLF7 promotes IL-6 expression via the PKCζ/NF-κB pathway in adipocytes; luciferase reporter and ChIP assays confirmed that KLF7 transcriptionally upregulates PKCζ expression; adipocyte-specific KLF7 knockout mice showed decreased PKCζ, p-IκB, p-p65, and IL-6 in epididymal white adipose tissue.\",\n      \"method\": \"Fat-conditional KLF7 knockout mice, luciferase reporter assay, ChIP assay (KLF7 at PKCζ promoter), Western blot, qRT-PCR\",\n      \"journal\": \"FASEB journal\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — conditional KO in vivo combined with ChIP/reporter to confirm direct transcriptional activation of PKCζ, single lab\",\n      \"pmids\": [\"37342904\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"KLF7 directly binds and transcriptionally activates the IGF2BP2 promoter and its super-enhancer region in head and neck squamous cell carcinoma, shown by ChIP-qPCR and dual-luciferase reporter assays; KLF7 abundance positively correlates with IGF2BP2 expression.\",\n      \"method\": \"H3K27Ac ChIP-seq, ChIP-qPCR, dual-luciferase reporter assay, CRISPR/Cas9 gene editing, small-molecule inhibitor (JQ1)\",\n      \"journal\": \"Journal of experimental & clinical cancer research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP-seq and ChIP-qPCR plus reporter assay orthogonally confirm direct binding, single lab\",\n      \"pmids\": [\"38443991\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"KLF7 promotes preadipocyte proliferation by transcriptionally activating CDKN3 via a binding site upstream of the CDKN3 gene; CDKN3 in turn activates Akt signaling, driving the G1/S cell cycle transition (confirmed by ChIP-seq, promoter truncation/deletion analysis, and Akt phosphorylation assays).\",\n      \"method\": \"KLF7 ChIP-seq, luciferase reporter with 5'-truncation and binding-site deletion, CDKN3 knockdown/overexpression, flow cytometry (cell cycle), Akt phosphorylation assay\",\n      \"journal\": \"Acta biochimica et biophysica Sinica\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP-seq plus promoter mutagenesis plus rescue epistasis, single lab, chicken preadipocyte model\",\n      \"pmids\": [\"36269137\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2023,\n      \"finding\": \"PU.1 directly binds KLF7 (confirmed by Co-IP and FRET) and enhances KLF7's transcriptional activation of CDKN3 in chicken preadipocytes; PU.1 overexpression inhibits preadipocyte differentiation and promotes proliferation.\",\n      \"method\": \"Co-immunoprecipitation, FRET assay, luciferase reporter (CDKN3 promoter), PU.1 overexpression/knockdown\",\n      \"journal\": \"Acta biochimica et biophysica Sinica\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct protein–protein interaction confirmed by Co-IP and FRET, functional consequences shown, single lab\",\n      \"pmids\": [\"36647727\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"KLF7 promotes the corneal progenitor cell state and antagonizes KLF4's corneal differentiation-promoting activity; KLF7 was shown by ChIP-seq to occupy corneal epithelial enhancers enriched for KLF motifs.\",\n      \"method\": \"ChIP-seq (KLF7 occupancy), KLF7 knockdown in primary human corneal epithelial cells, gene expression analysis\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP-seq genome-wide binding with loss-of-function cellular phenotype, single lab\",\n      \"pmids\": [\"28916725\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"KLF7 transcriptionally activates ALKBH5 by binding its promoter (confirmed by dual-luciferase and ChIP assays); ALKBH5 then reduces m6A modification of ACSL4 mRNA, decreasing ACSL4 protein and inhibiting ferroptosis in ox-LDL-treated endothelial cells.\",\n      \"method\": \"Dual-luciferase assay, ChIP assay, MeRIP assay for m6A modification of ACSL4, KLF7/ALKBH5 overexpression/knockdown, ferroptosis markers\",\n      \"journal\": \"Cytotechnology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP + reporter confirm direct promoter binding; MeRIP confirms m6A mechanism; single lab\",\n      \"pmids\": [\"39435423\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"KLF7 directly binds and transcriptionally activates the SLC1A5 promoter in hepatocellular carcinoma cells, promoting tryptophan uptake and serotonin biosynthesis; increasing serotonin restores malignancy in KLF7-knockdown cells.\",\n      \"method\": \"ChIP assay (KLF7 at SLC1A5 promoter), KLF7 knockdown/overexpression, serotonin measurement, serotonin rescue experiment\",\n      \"journal\": \"Journal of cellular and molecular medicine\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP confirms direct binding, metabolite rescue confirms functional link, single lab\",\n      \"pmids\": [\"39648156\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"GNA14 stimulates KLF7 expression in endometrial cancer cells, and KLF7 transcriptionally activates HAS2 (hyaluronan synthase 2); KLF7/HAS2 axis promotes UCEC cell proliferation and migration, with HAS2 knockdown reversing KLF7-driven oncogenic effects.\",\n      \"method\": \"GNA14/KLF7 knockdown/overexpression, RNA sequencing, qRT-PCR, Western blot, rescue experiments (HAS2 knockdown), xenograft\",\n      \"journal\": \"BMC cancer\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — GNA14→KLF7 regulation shown by expression only (no direct binding assay for this step); HAS2 as KLF7 target inferred from RNA-seq without promoter binding confirmation; single lab\",\n      \"pmids\": [\"33892667\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"KLF7 directly binds the promoter of PDGFB (at TGGGTGGAG motif), driving PDGFB transcription and secretion; secreted PDGFB activates MAPK/ERK, PI3K/AKT, and JAK/STAT3 pathways through PDGFRβ to promote colon adenocarcinoma progression.\",\n      \"method\": \"ChIP assay (KLF7 at PDGFB promoter), luciferase reporter, KLF7 knockdown/overexpression, in vitro and in vivo experiments, sunitinib pharmacological blockade\",\n      \"journal\": \"International journal of biological sciences\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP confirms direct promoter binding with defined motif, multiple downstream pathway readouts, single lab\",\n      \"pmids\": [\"38164176\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"KLF7 directly binds the MKNK2 promoter to repress MKNK2 transcription (confirmed by ChIP and dual-luciferase assays), thereby suppressing HIF-1 signaling and M1 microglia polarization after ischemic stroke.\",\n      \"method\": \"ChIP assay, dual-luciferase reporter, KLF7 overexpression/knockdown, MCAO/R rat model, MKNK2 knockdown/overexpression\",\n      \"journal\": \"Brain and behavior\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP + reporter confirm direct repression of MKNK2 by KLF7, in vivo epistasis, single lab\",\n      \"pmids\": [\"40923147\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"NRF1 binds to the KLF7 promoter to enhance KLF7 transcription; USP7 stabilizes NRF1 via deubiquitination; collectively USP7→NRF1→KLF7 axis protects neurons from inflammation and apoptosis after spinal cord injury (confirmed by Co-IP, ChIP, and dual-luciferase assays).\",\n      \"method\": \"Co-immunoprecipitation (USP7–NRF1), ChIP assay (NRF1 at KLF7 promoter), dual-luciferase reporter, KLF7/NRF1/USP7 knockdown/overexpression, SCI rat and LPS cell models\",\n      \"journal\": \"Neurological research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP + ChIP + reporter orthogonally confirm the pathway, single lab, two model systems\",\n      \"pmids\": [\"39007840\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"KLF7 directly binds the promoters of AHNAK, AHNAK2, and GDPD5, regulating their expression and altering GTPase activity to induce neuroblastoma cell differentiation; KLF7 acts independently of the retinoic acid pathway and cooperatively with RA; silencing KLF7 promotes adrenergic-to-mesenchymal transition.\",\n      \"method\": \"ChIP assay (KLF7 at AHNAK/AHNAK2/GDPD5 promoters), KLF7 knockdown/overexpression, GTPase activity assay, RA co-treatment experiments, transcriptomic profiling\",\n      \"journal\": \"The FEBS journal\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP confirms direct binding to target promoters with functional consequences shown, single lab\",\n      \"pmids\": [\"38924469\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"KLF7 deletion in hippocampal progenitors (Emx1-Cre;Klf7F/F mice) causes hippocampal shrinkage with disrupted neurogenesis, neuronal differentiation, and migration; transcriptomic profiling identified Draxin (a neural chemorepellent) as a direct downstream KLF7 target, and overexpression of Draxin rescued dentate gyrus granule cell migration defects in KLF7 mutant mice.\",\n      \"method\": \"Conditional knockout mice (Emx1-Cre;Klf7F/F), RNA-seq transcriptomic profiling, Draxin overexpression rescue, behavioral assays (anxiety, memory)\",\n      \"journal\": \"Development (Cambridge, England)\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — conditional genetic KO with specific molecular target identification and in vivo epistatic rescue, single lab with multiple orthogonal readouts\",\n      \"pmids\": [\"40762575\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"FOXO4 transcriptionally activates KLF7 by binding its promoter (confirmed by ChIP-qPCR and dual-luciferase assay); KLF7 in turn activates the TLR4/MyD88/NF-κB pathway to promote high-glucose-induced retinal pigment epithelial cell injury.\",\n      \"method\": \"ChIP-qPCR, dual-luciferase reporter (FOXO4 at KLF7 promoter), FOXO4/KLF7 knockdown/overexpression, NF-κB inhibitor (BAY 11-7085) epistasis, HG-challenged RPE cells\",\n      \"journal\": \"Applied biochemistry and biotechnology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and reporter confirm direct FOXO4 binding to KLF7 promoter, pharmacological epistasis confirms pathway, single lab\",\n      \"pmids\": [\"41231402\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"MLL1 promotes KLF7 transcription through H3K4me3 modification at the KLF7 promoter in rheumatoid arthritis fibroblast-like synoviocytes; KLF7 then transcriptionally activates USP7; this MLL1/KLF7/USP7 axis promotes FLS proliferation and invasion.\",\n      \"method\": \"ChIP assay (MLL1 and H3K4me3 at KLF7 promoter; KLF7 at USP7 promoter), dual-luciferase assay, shRNA knockdown, CCK-8/Transwell assays\",\n      \"journal\": \"In vitro cellular & developmental biology. Animal\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP confirms epigenetic writing at KLF7 promoter and KLF7 binding at USP7 promoter, single lab, functional readout\",\n      \"pmids\": [\"41483084\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"KLF7 directly binds and transcriptionally activates the ITGA2 promoter and super-enhancer in oral squamous cell carcinoma (confirmed by ChIP-seq and dual-luciferase assays); ITGA2, upon binding its ECM ligand type I collagen, activates PI3K-AKT, MAPK, and Hippo signaling to maintain cancer stem cell stemness.\",\n      \"method\": \"ChIP-seq (KLF7 at ITGA2 locus), dual-luciferase assay, ITGA2 knockdown, tumor sphere formation, flow cytometry, limiting dilution xenograft assay, TC-I 15 inhibitor treatment\",\n      \"journal\": \"Cell death & disease\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP-seq plus reporter confirm direct binding, multiple functional readouts, single lab\",\n      \"pmids\": [\"40316546\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"KLF7 transcriptionally activates LOX (lysyl oxidase) in HNSCC cells (direct transcriptional activation), and LOX-driven ECM crosslinking stiffens the tumor microenvironment to recruit macrophages and suppress CD8+ T cell killing.\",\n      \"method\": \"KLF7 knockdown/overexpression, in vitro and in vivo (xenograft) experiments, LOX identified as direct KLF7 transcriptional target (described as 'bona fide target'), macrophage recruitment assays\",\n      \"journal\": \"Cancer letters\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — LOX described as bona fide transcriptional target but no explicit ChIP or reporter data stated in abstract; mechanism inferred from in vivo rescue and correlation, single lab\",\n      \"pmids\": [\"41482204\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2024,\n      \"finding\": \"KLF7 transcriptionally activates LIMK1 by binding its promoter (confirmed by ChIP and dual-luciferase assays); LIMK1 then physically interacts with SRPK1 (confirmed by GST pull-down and Co-IP) to promote SRPK1 phosphorylation, driving inflammation in LPS-treated alveolar epithelial cells.\",\n      \"method\": \"ChIP assay, dual-luciferase assay (KLF7 at LIMK1 promoter), GST pull-down and Co-IP (LIMK1–SRPK1 interaction), KLF7/LIMK1/SRPK1 knockdown/overexpression, ELISA\",\n      \"journal\": \"Central-European journal of immunology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP + reporter confirm promoter binding; GST pull-down + Co-IP confirm protein interaction; single lab\",\n      \"pmids\": [\"42028385\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2026,\n      \"finding\": \"KLF7 directly binds the PPP1R14C promoter to drive its transcription; PPP1R14C physically interacts with and inhibits the PP1 catalytic subunit, sustaining CDK1 hyperactivation and promoting lung squamous cell carcinoma proliferation and invasion.\",\n      \"method\": \"ChIP assay (KLF7 at PPP1R14C promoter), Co-IP (PPP1R14C–PP1), KLF7/PPP1R14C overexpression/knockdown, CDK1 pharmacological inhibition (rescue), in vivo tumorigenesis\",\n      \"journal\": \"Scientific reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and Co-IP confirm direct molecular interactions with functional rescue by CDK1 inhibitor, single lab\",\n      \"pmids\": [\"41699008\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"KLF7 promotes colorectal cancer liver metastasis by transcriptionally activating TGFβ autocrine signaling, driving EMT; EGCG inhibits KLF7 transcriptional activity and suppresses TGFβ/EMT (confirmed by dual-luciferase reporter assays and in vitro/in vivo experiments).\",\n      \"method\": \"Dual-luciferase reporter assay, KLF7 knockdown/overexpression, in vitro and in vivo metastasis assays, EGCG inhibitor treatment\",\n      \"journal\": \"Cancer letters\",\n      \"confidence\": \"Low\",\n      \"confidence_rationale\": \"Tier 3 / Weak — reporter assay shows transcriptional activity; TGFβ target specificity not confirmed by direct promoter ChIP in abstract; single lab\",\n      \"pmids\": [\"41213461\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"KLF7 is highly expressed in conventional and naive human pluripotent stem cells and can replace KLF4 in OSKM somatic reprogramming; forced KLF7 expression induces upregulation of naive pluripotency markers and enables chemical resetting to naive PSCs; CRISPRi-mediated KLF7 silencing reduces efficiency of chemical resetting without affecting maintenance of conventional PSCs.\",\n      \"method\": \"KLF7 overexpression replacing KLF4 in OSKM reprogramming, CRISPRi-mediated KLF7 silencing, transcriptome analysis, naive/primed PSC culture and chemical resetting assays\",\n      \"journal\": \"EMBO reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — functional replacement of KLF4 plus CRISPRi loss-of-function with specific pluripotency phenotype, single lab, multiple orthogonal approaches\",\n      \"pmids\": [\"41094238\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"UKLF/KLF7 transcriptionally activates SLC39A4 expression; PCBP2 binds the 3'-UTR of UKLF mRNA to enhance its stability; together the PCBP2/UKLF/SLC39A4 pathway promotes colorectal cancer progression.\",\n      \"method\": \"ChIP assay/luciferase assay (KLF7 at SLC39A4 promoter), RNA-binding protein assay (PCBP2 binding to UKLF 3'-UTR), KLF7/PCBP2/SLC39A4 knockdown, xenograft\",\n      \"journal\": \"Biochimica et biophysica acta. Molecular cell research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct transcriptional target confirmed by ChIP/reporter; mRNA stabilization by PCBP2 confirmed; single lab\",\n      \"pmids\": [\"38768927\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2025,\n      \"finding\": \"KLF7 transcriptionally represses MKNK2 and promotes PDE4 repression: in PCOS granulosa cells, KLF7 binds the PDE4 promoter and suppresses PDE4 transcription (confirmed by ChIP and dual-luciferase assay); KLF7 overexpression promotes granulosa cell proliferation and inhibits apoptosis, and PDE4 overexpression reverses these effects.\",\n      \"method\": \"ChIP assay, dual-luciferase reporter (KLF7 at PDE4 promoter), KLF7/PDE4 overexpression, CCK-8, TUNEL, EdU assays in DHT-treated HGL5 cells\",\n      \"journal\": \"Endocrine connections\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and reporter confirm direct repression of PDE4 by KLF7; epistatic rescue confirms pathway; single lab\",\n      \"pmids\": [\"41071839\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2026,\n      \"finding\": \"In hypopharyngeal squamous cell carcinoma, HDAC6 removes H3K9ac marks at the KLF7 promoter to suppress KLF7 expression; when HDAC6 is downregulated in HPSCC, KLF7 is upregulated and transcriptionally induces THBS1, which activates p38 MAPK signaling to drive EMT and lung metastasis.\",\n      \"method\": \"ChIP assay (H3K9ac at KLF7 promoter; KLF7 at THBS1 promoter), HDAC6/KLF7/THBS1 lentiviral knockdown/overexpression, EdU/colony formation/Transwell assays, in vivo lung metastasis (tail-vein injection), Western blot for EMT markers\",\n      \"journal\": \"iScience\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP confirms HDAC6-mediated histone modification at KLF7 promoter and KLF7 binding at THBS1 promoter; in vivo rescue validates axis; single lab\",\n      \"pmids\": [\"41732256\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"KLF7 is a zinc-finger Krüppel-like transcription factor that binds CACCC motifs in target gene promoters to activate or repress transcription in a cell-context-dependent manner; its established transcriptional targets include p21/CDKN1A, p27/CDKN1B, TrkA, TrkB (via TCaRE3), OMP, L1CAM, PFKL, ACADL, ASL, DLG3, TLR4, PTK2, VPS35, SLC1A5, ALKBH5, PDGFB, ITGA2, HDAC4, PKCζ, IL-6, MKNK2, LIMK1, LOX, PPP1R14C, SLC39A4, PDE4, THBS1, and Draxin; its protein stability is regulated by SCF-Fbxw7-mediated polyubiquitylation that requires prior GSK-3-dependent phosphorylation of its Cdc4 phosphodegron, while its co-activator MoKA enhances its transcriptional output and undergoes regulated nuclear-cytoplasmic shuttling; KLF7 activity is modulated upstream by NF-κB (p65), CREB, NRF1/USP7, GNA14, HMGB1-TLR4-AKT, MLL1-H3K4me3, and GATA2/3; collectively, KLF7 controls neuronal morphogenesis, axon outgrowth, satellite cell quiescence, cardiac metabolic balance, adipogenesis, and stem cell pluripotency, and is oncogenic in multiple cancer types.\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"KLF7 is a Krüppel-like zinc-finger transcription factor that binds CACCC motifs and KLF-type sites in target gene promoters and enhancers to activate or repress transcription, controlling cell-cycle exit, neuronal morphogenesis, lineage differentiation, and metabolic homeostasis [#0, #2, #4]. In neural and proliferative contexts it activates the CDK inhibitors p21/CDKN1A and p27/CDKN1B and represses cyclin D1 to enforce G1 arrest, a function central to its control of olfactory neuron differentiation and satellite-cell quiescence [#0, #1, #7]. During neuronal development it directly drives genes required for axon outgrowth and identity, including OMP and L1CAM, the neurotrophin receptor TrkA (acting synergistically with Brn3a) and TrkB (via the calcium/cAMP-responsive TCaRE3 element), and the chemorepellent Draxin, whose loss underlies hippocampal neurogenesis and granule-cell migration defects in conditional knockouts [#2, #3, #4, #29]. KLF7 is broadly required for differentiation of neuroectodermal, mesodermal, and pluripotent lineages and can substitute for KLF4 in reprogramming to naive pluripotency [#6, #37]. In the heart it simultaneously tunes glycolysis and fatty-acid oxidation by transactivating PFKL and ACADL, with cardiac-specific gain or loss producing distinct hypertrophic phenotypes [#15]. Across diverse cancers KLF7 acts as an oncogenic transcriptional driver, directly activating metabolic, signaling, and ECM-remodeling targets such as SLC1A5, ASL, PDGFB, ITGA2, LOX, IGF2BP2, and VPS35 to promote proliferation, metastasis, and stemness [#11, #12, #13, #23, #25, #32]. KLF7 protein stability is controlled by SCF-Fbxw7-mediated polyubiquitylation that requires prior GSK-3-dependent phosphorylation of its Cdc4 phosphodegron, and its abundance is set upstream by transcriptional inputs including NF-κB/p65, NRF1, FOXO4, PU.1, and MLL1-deposited H3K4me3, while its co-activator MoKA binds KLF7 and stimulates its output [#5, #8, #10, #20, #27, #30, #31].\",\n  \"teleology\": [\n    {\n      \"year\": 2001,\n      \"claim\": \"Established that KLF7 is not merely a developmental marker but an active regulator of cell-cycle entry, linking it mechanistically to growth control.\",\n      \"evidence\": \"KLF7 overexpression in fibroblasts and neuroblastoma cells with cell-cycle analysis\",\n      \"pmids\": [\"11336497\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Gain-of-function only, no direct promoter binding shown for cyclin D1 or p21\", \"Single lab, no in vivo confirmation\"]\n    },\n    {\n      \"year\": 2005,\n      \"claim\": \"Identified direct transcriptional targets (p21/CDKN1A, p27/CDKN1B) explaining how KLF7 enforces cell-cycle exit during neuronal differentiation in vivo.\",\n      \"evidence\": \"Klf7-/- mice, in situ hybridization, immunoblot, cotransfection/luciferase reporter assays\",\n      \"pmids\": [\"15964824\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Whether p21/p27 activation is direct via defined CACCC sites not fully mapped\", \"Tissue specificity of cofactor requirements unresolved\"]\n    },\n    {\n      \"year\": 2006,\n      \"claim\": \"Demonstrated sequence-specific CACCC-motif binding to neuronal differentiation and adhesion gene promoters (OMP, L1CAM) and cooperative control of TrkA with Brn3a, establishing KLF7 as a direct transcriptional driver of neuronal identity and innervation.\",\n      \"evidence\": \"Microarray of Klf7-/- neurons, promoter transfection assays, Brn3a-/-;Klf7-/- double-knockout epistasis, IHC\",\n      \"pmids\": [\"17123745\", \"17011544\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Direct genome-wide binding not yet mapped at this stage\", \"Mechanism of synergy with Brn3a at the molecular level unresolved\"]\n    },\n    {\n      \"year\": 2007,\n      \"claim\": \"Defined a novel KLF7-bound regulatory element (TCaRE3) coupling KLF7 to activity-dependent (Ca2+/cAMP) TrkB transcription, connecting KLF7 to neuronal signal-responsive gene expression.\",\n      \"evidence\": \"EMSA for direct binding, TCaRE3 mutagenesis in luciferase reporters, Ca2+/cAMP stimulation\",\n      \"pmids\": [\"17553693\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Signaling input that converts Ca2+/cAMP into KLF7 occupancy not defined\", \"Post-translational modifications regulating TCaRE3 binding unknown\"]\n    },\n    {\n      \"year\": 2006,\n      \"claim\": \"Identified MoKA as a physical KLF7 partner and co-activator with regulated nuclear-cytoplasmic shuttling, providing a mechanism for tuning KLF7 transcriptional output.\",\n      \"evidence\": \"Co-IP, NLS/NES fusion-protein expression, GAL4 chimeric reporter assays, leptomycin B treatment\",\n      \"pmids\": [\"16990251\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Physiological contexts where MoKA shuttling controls KLF7 activity not established\", \"Endogenous stoichiometry and reciprocal validation limited\"]\n    },\n    {\n      \"year\": 2010,\n      \"claim\": \"Broadened KLF7 function beyond neurons by showing it is required for differentiation across neuroectodermal, cardiomyocytic, adipogenic, and osteogenic lineages.\",\n      \"evidence\": \"shRNA silencing in PC12 cells, Klf7-null neural stem cells, ESC differentiation assays, MEF lineage assays\",\n      \"pmids\": [\"20580711\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct targets in each lineage not defined\", \"Whether effects are cell-autonomous unresolved\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Placed KLF7 downstream of TGF-β and Notch3 as a p21-dependent effector of satellite-cell quiescence, and implicated DNA-binding-domain acetylation (K227/K231) as a regulatory switch.\",\n      \"evidence\": \"KLF7 knockdown/overexpression in satellite cells, signaling epistasis, acetylation-mutant analysis\",\n      \"pmids\": [\"26930448\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Acetyltransferase/deacetylase responsible for K227/K231 not identified\", \"Direct effect of acetylation on DNA binding affinity not quantified\"]\n    },\n    {\n      \"year\": 2019,\n      \"claim\": \"Defined the principal mechanism controlling KLF7 protein abundance: SCF-Fbxw7 polyubiquitylation gated by GSK-3 phosphorylation of a Cdc4 phosphodegron.\",\n      \"evidence\": \"DiPIUS proteomics, Co-IP, in vitro polyubiquitylation, CPD mutagenesis, GSK-3 inhibitor epistasis, half-life measurement\",\n      \"pmids\": [\"30838725\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Signals that activate GSK-3-dependent CPD phosphorylation in vivo not defined\", \"Whether degradation is regulated differentially across tissues unknown\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Established KLF7 as a node in metabolic inflammation, transactivating IL-6 downstream of TLR4 in palmitic-acid-stimulated adipocytes.\",\n      \"evidence\": \"IL-6 promoter luciferase reporter, KLF7 and TLR4 manipulation, qRT-PCR, Western blot\",\n      \"pmids\": [\"30598636\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct ChIP for KLF7 at IL-6 promoter not shown\", \"Relationship to NF-κB occupancy unresolved\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Identified upstream transcriptional control of KLF7 by NF-κB/p65 in lipotoxic adipose signaling, establishing a feed-forward inflammatory circuit.\",\n      \"evidence\": \"ChIP and luciferase reporter for p65 at KLF7 promoter, GPR40/GPR120 blockade in vivo and in vitro\",\n      \"pmids\": [\"35443706\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Whether KLF7 reciprocally amplifies NF-κB in vivo not fully dissected\", \"Tissue-specific dependence unresolved\"]\n    },\n    {\n      \"year\": 2023,\n      \"claim\": \"Showed KLF7 sets cardiac substrate balance by directly co-regulating glycolysis (PFKL) and fatty-acid oxidation (ACADL), with dosage controlling hypertrophy phenotype.\",\n      \"evidence\": \"Cardiac-specific Klf7 knockout/overexpression mice, ChIP, luciferase reporter, PFKL/ACADL rescue\",\n      \"pmids\": [\"36810848\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"How a single factor coordinately tunes two opposing metabolic genes mechanistically unresolved\", \"Developmental-stage specificity of opposite phenotypes not fully explained\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Linked KLF7 to organelle integrity and tumor secretome, sustaining DLG3 to maintain Golgi structure, glycosylation, and chemokine secretion in PDAC.\",\n      \"evidence\": \"shRNA knockdown, xenograft, transcriptomics, glycosylation assays\",\n      \"pmids\": [\"32430335\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Direct binding to DLG3 promoter not mapped\", \"Mechanism connecting DLG3 to Golgi integrity unresolved\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"A large body of cancer studies establishes KLF7 as a context-dependent oncogenic transcription factor driving metabolic, signaling, ECM, and stemness programs, but a unifying determinant of its activator-versus-repressor behavior and cofactor selection across tissues remains undefined.\",\n      \"evidence\": \"ChIP/ChIP-seq, reporter assays, knockdown/overexpression and xenografts across HCC, glioma, colorectal, oral/head-and-neck, lung, endometrial, and neuroblastoma models defining direct targets including ASL, VPS35, TLR4/PTK2, HDAC4, PKCζ, SLC1A5, IGF2BP2, CDKN3, ALKBH5, PDGFB, MKNK2, ITGA2, LIMK1, PPP1R14C, SLC39A4, PDE4, THBS1, AHNAK/AHNAK2/GDPD5\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No structural model of KLF7 bound to DNA or cofactors\", \"Rules governing activation versus repression of targets unknown\", \"Whether the diverse cancer targets reflect distinct cofactor complexes is unresolved\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0140110\", \"supporting_discovery_ids\": [0, 2, 3, 4, 15, 25, 32]},\n      {\"term_id\": \"GO:0003677\", \"supporting_discovery_ids\": [2, 4, 25]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005634\", \"supporting_discovery_ids\": [5]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [0, 2, 4, 15]},\n      {\"term_id\": \"R-HSA-1640170\", \"supporting_discovery_ids\": [0, 1, 7, 19]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [3, 6, 29, 37]},\n      {\"term_id\": \"R-HSA-1643685\", \"supporting_discovery_ids\": [11, 13, 14, 23, 25, 32]},\n      {\"term_id\": \"R-HSA-392499\", \"supporting_discovery_ids\": [8]},\n      {\"term_id\": \"R-HSA-1430728\", \"supporting_discovery_ids\": [12, 15, 23]}\n    ],\n    \"complexes\": [],\n    \"partners\": [\"MoKA\", \"FBXW7\", \"Brn3a\", \"PU.1\", \"NRF1\", \"FOXO4\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":7,"faith_total":7,"faith_pct":100.0}}