{"gene":"WNT10B","run_date":"2026-06-11T09:02:06","timeline":{"discoveries":[{"year":2005,"finding":"Wnt10b shifts mesenchymal precursor cell fate toward osteoblastogenesis and away from adipogenesis by inducing osteoblastogenic transcription factors Runx2, Dlx5, and osterix while suppressing adipogenic transcription factors C/EBPα and PPARγ; Wnt10b-/- mice have decreased trabecular bone confirming its endogenous role in bone formation.","method":"Transgenic mouse overexpression (FABP4-Wnt10b), Wnt10b knockout mice, pharmacological and genetic epistasis approaches, histomorphometry","journal":"Proceedings of the National Academy of Sciences of the United States of America","confidence":"High","confidence_rationale":"Tier 2 / Strong — reciprocal gain- and loss-of-function in vivo with defined molecular targets and multiple orthogonal methods; independently replicated across multiple labs","pmids":["15728361"],"is_preprint":false},{"year":2004,"finding":"Wnt10b inhibits development of both white and brown adipose tissue in vivo; transgenic FABP4-Wnt10b mice show ~50% reduction in total body fat, resistance to diet-induced obesity, improved glucose tolerance and insulin sensitivity, and inability to maintain core body temperature (loss of brown adipose tissue function).","method":"Transgenic mouse model (FABP4-Wnt10b), histology, metabolic phenotyping, cold-exposure challenge","journal":"The Journal of biological chemistry","confidence":"High","confidence_rationale":"Tier 2 / Strong — clean in vivo transgenic model with multiple orthogonal phenotypic readouts, replicated in subsequent studies","pmids":["15190075"],"is_preprint":false},{"year":2011,"finding":"Wnt10b inhibits adipogenesis and stimulates osteoblastogenesis through a β-catenin-dependent mechanism; knockdown of β-catenin completely prevents both effects of Wnt10b on mesenchymal stem cell fate in bipotential ST2 cells and 3T3-L1 preadipocytes.","method":"Gain- and loss-of-function in ST2 and 3T3-L1 cells, β-catenin knockdown, osteoblastogenesis and adipogenesis assays","journal":"Bone","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic epistasis (β-catenin KD rescues Wnt10b effect), multiple orthogonal methods, replicated in multiple cell lines","pmids":["21872687"],"is_preprint":false},{"year":2009,"finding":"Intermittent parathyroid hormone (iPTH) increases Wnt10b production by bone marrow CD8+ T cells, which then activate canonical Wnt signaling in preosteoblasts to stimulate osteoblastic commitment, proliferation, differentiation, and lifespan; T-cell-null mice and mice lacking T-cell-produced Wnt10b show no anabolic response to iPTH.","method":"In vivo iPTH treatment, T-cell-null mice, conditional Wnt10b knockout in T cells, histomorphometry, Wnt signaling assays in preosteoblasts","journal":"Cell metabolism","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple genetic knockout models demonstrating epistasis, clean in vivo phenotype with defined cellular and molecular mechanism, replicated in subsequent human studies","pmids":["19723499"],"is_preprint":false},{"year":2018,"finding":"Gut microbiota-derived butyrate induces expansion of intestinal and bone marrow regulatory T (Treg) cells; Treg cells promote assembly of a NFAT1-SMAD3 transcription complex in CD8+ T cells, driving expression of Wnt10b, which mediates bone anabolic effects; reconstitution with Wnt10b-/- CD8+ T cells prevents butyrate-induced bone formation.","method":"Probiotic/butyrate supplementation in mice, germ-free mice, Treg depletion, TCRβ-/- mice reconstituted with Wnt10b-/- CD8+ T cells, ChIP for NFAT1-SMAD3 complex, microCT","journal":"Immunity","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple genetic models, ChIP demonstrating transcription complex, orthogonal in vivo and in vitro approaches in single rigorous study","pmids":["30446387"],"is_preprint":false},{"year":2013,"finding":"WNT10B activates canonical β-catenin signaling in triple-negative breast cancer cells, leading to transcriptional upregulation of HMGA2 (demonstrated by ChIP); HMGA2 is necessary and sufficient for WNT10B-driven proliferation of TNBC cells; siRNA to HMGA2 decreases proliferation.","method":"ChIP analysis, siRNA knockdown, luciferase reporter assays, transgenic mouse tumor model, Western blotting","journal":"EMBO molecular medicine","confidence":"High","confidence_rationale":"Tier 2 / Moderate — ChIP demonstrates direct transcriptional activation, supported by siRNA epistasis and in vivo transgenic model, single lab but multiple orthogonal methods","pmids":["23307470"],"is_preprint":false},{"year":2018,"finding":"In chemoresistant TNBC, WNT10B activates a β-CATENIN/HMGA2/EZH2 autoregulatory loop; HMGA2 and EZH2 displace Groucho/TLE1 from TCF-4 and serve as gatekeepers for K49 acetylation on β-CATENIN essential for transcription; HMGA2-EZH2 interacts with the PRC2 complex.","method":"Co-immunoprecipitation, MMTV-Wnt10b transgenic mice, Hmga2 haploinsufficiency, PDX model, Western blot, molecular epistasis","journal":"Cancer research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP and in vivo genetic model, single lab, mechanistic detail on β-catenin K49 acetylation","pmids":["30563890"],"is_preprint":false},{"year":2013,"finding":"TGF-β1 stimulates Wnt10b production in osteoclasts through Smad2/3 activation (not AKT or MAPK); TGF-β1-induced osteoclast-derived Wnt10b promotes osteoblast mineralization; blocking Wnt10b with DKK1 suppresses this mineralization-promoting activity.","method":"In vitro osteoclast culture, TGF-β1 treatment, Smad2/3 signaling blockade, DKK1 inhibition, conditioned media osteoblast mineralization assay","journal":"Endocrinology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — defined signaling pathway (Smad2/3 dependence), conditioned media functional assay, single lab with multiple pathway inhibitors","pmids":["23861379"],"is_preprint":false},{"year":2010,"finding":"Wnt10b deficiency in null mice results in a progressive, age-dependent reduction in mesenchymal progenitor cells (assessed by colony-forming unit assays) and trabecular bone loss, with reduced expression of osteoblast differentiation markers in bone marrow stromal cells.","method":"Wnt10b-/- mice, microCT, histomorphometry, colony-forming unit assays, osteogenic gene expression analysis","journal":"Journal of bone and mineral research","confidence":"High","confidence_rationale":"Tier 2 / Strong — loss-of-function mouse model with multiple orthogonal readouts, multiple inbred backgrounds tested","pmids":["20499361"],"is_preprint":false},{"year":2005,"finding":"Wnt10b deficiency in myoblasts increases adipogenic potential, contributing to excessive lipid accumulation in regenerating myofibers; overexpression of Wnt10b in aged myoblasts inhibits adipogenic gene expression and sustains myogenic differentiation; GSK-3 inhibition mimics Wnt10b overexpression effects.","method":"Wnt10b null myoblasts, Wnt10b overexpression, GSK-3 inhibition, adipogenic/myogenic differentiation assays, in vivo muscle regeneration analysis","journal":"Molecular biology of the cell","confidence":"High","confidence_rationale":"Tier 2 / Strong — reciprocal gain- and loss-of-function with defined phenotypic readouts in vitro and in vivo, pharmacological epistasis","pmids":["15673614"],"is_preprint":false},{"year":1997,"finding":"Overexpression of Wnt-10b in mammary glands of transgenic mice (MMTV-Wnt10b) causes hypermorphic ductal development, precocious alveolar formation in virgins, male gynecomastia bypassing androgen repression, and high susceptibility to mammary adenocarcinoma; co-expression with FGF-3/int-2 causes potent interaction and disorganized mammary epithelium.","method":"MMTV-Wnt10b transgenic mouse model, histology, tumor incidence analysis, MMTV-Wnt10b × MMTV-FGF3 cross","journal":"Oncogene","confidence":"High","confidence_rationale":"Tier 2 / Strong — rigorous in vivo transgenic gain-of-function with defined developmental and oncogenic phenotypes, genetic interaction with FGF-3","pmids":["9393971"],"is_preprint":false},{"year":2017,"finding":"Wnt10b secreted from fibroblasts is transported via exosomes to breast cancer epithelial cells; paracrine Wnt10b from p85α-deficient fibroblasts promotes cancer progression through epithelial-to-mesenchymal transition via the canonical Wnt pathway.","method":"Conditioned media experiments, exosome isolation/characterization, co-culture, EMT marker analysis, Western blot","journal":"Oncogene","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — exosome-mediated transport demonstrated, canonical Wnt pathway implicated, single lab","pmids":["28394344"],"is_preprint":false},{"year":2017,"finding":"Fibroblast-derived exosomes (FD exosomes) mobilize Wnt10b toward lipid rafts, activating mTOR signaling via GSK3β and TSC2; autocrine Wnt10b-mTOR pathway is required for FD exosome-promoted axonal regeneration after optic nerve injury, as Wnt10b-deleted animals show strongly reduced regeneration.","method":"Wnt10b knockout mice, optic nerve injury model, lipid raft fractionation, mTOR signaling pathway analysis, in vitro neurite growth assays","journal":"Cell reports","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genetic knockout with defined functional phenotype, biochemical pathway analysis, single lab","pmids":["28683327"],"is_preprint":false},{"year":2012,"finding":"miR-148a directly targets WNT10B mRNA via its 3'UTR (demonstrated by luciferase reporter assay); silencing of miR-148a in cancer-associated fibroblasts elevates WNT10B protein levels and promotes migration of endometrial cancer cell lines; re-introduction of miR-148a reduces WNT10B and impairs cancer cell migration.","method":"3'UTR luciferase reporter assay, miR-148a lentiviral overexpression, conditioned media migration assays, Western blot","journal":"Oncogene","confidence":"High","confidence_rationale":"Tier 2 / Strong — direct 3'UTR target validation by luciferase assay, functional migration phenotype, multiple cancer cell lines tested","pmids":["22890324"],"is_preprint":false},{"year":2003,"finding":"In zebrafish, wnt10b and wnt1 provide partially redundant functions at the midbrain-hindbrain boundary (MHB); double deletion of both loci causes loss of pax2.1, en2, and her5 expression in the ventral MHB; wnt10b/wnt1 are required to maintain threshold levels of Pax2.1 and Fgf8 at the MHB.","method":"Zebrafish wnt1-wnt10b deficiency allele generation, morpholino knockdown, in situ hybridization, genetic epistasis with Pax2.1 and Fgf8 mutants","journal":"Developmental biology","confidence":"High","confidence_rationale":"Tier 2 / Strong — genetic deficiency allele plus morpholino, defined epistasis with two other pathway members, in vivo readouts","pmids":["12591239"],"is_preprint":false},{"year":2020,"finding":"Wnt10b is required for normal mitotic microtubule dynamics and chromosome segregation in human somatic cells; Wnt10b acts through a Wnt/STOP (LRP6-DVL-dependent, β-catenin-independent) pathway to suppress GSK3β activity; loss of Wnt10b causes increased microtubule growth rates in mitotic spindles, whole chromosome missegregation, and aneuploidy.","method":"Wnt10b knockdown/knockout in human somatic cells, live-cell imaging of mitosis, microtubule dynamics measurements, Wnt/STOP pathway analysis, chromosome segregation assays","journal":"Life science alliance","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — defined β-catenin-independent mechanism, loss-of-function with specific mitotic phenotypes, single lab","pmids":["33257473"],"is_preprint":false},{"year":2015,"finding":"WNT10B causes nuclear transport and binding of both RAC1 and β-catenin in human corneal endothelial cells, activating Cyclin D1 expression and proliferation through simultaneously β-catenin-dependent and β-catenin-independent (RAC1) pathways.","method":"Nuclear fractionation, co-immunoprecipitation, reporter assays, proliferation assays in human corneal endothelial cells","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — nuclear transport demonstrated by fractionation, co-IP of RAC1/β-catenin, functional proliferation readout, single lab","pmids":["26370090"],"is_preprint":false},{"year":2014,"finding":"The sclerostin-independent bone anabolic activity of iPTH is mediated exclusively by T-cell-produced Wnt10b; in T-cell-null mice and mice lacking T-cell Wnt10b expression, combined iPTH + anti-sclerostin antibody treatment is equivalent to anti-sclerostin antibody alone in increasing osteoblast pool and bone volume.","method":"T-cell-null mice, T-cell-specific Wnt10b knockout mice, anti-sclerostin antibody treatment, iPTH treatment, histomorphometry, microCT","journal":"Journal of bone and mineral research","confidence":"High","confidence_rationale":"Tier 2 / Strong — multiple genetic models demonstrating epistasis, clean pharmacological dissection of mechanism, multiple orthogonal bone endpoints","pmids":["24357520"],"is_preprint":false},{"year":2019,"finding":"NSD1 histone methyltransferase promotes Wnt10b expression by mediating H3K36me2 methylation at the Wnt10b locus; NSD1 knockout increases H3K27me3 and reduces H3K36me2, suppressing Wnt10b expression and inactivating the Wnt/β-catenin pathway in hepatocellular carcinoma cells.","method":"CRISPR/Cas9 NSD1 knockout, ChIP for histone marks at Wnt10b locus, Western blot, reporter assays, xenograft model","journal":"Journal of experimental & clinical cancer research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP demonstrates epigenetic regulation of Wnt10b locus, CRISPR KO with functional readouts, single lab","pmids":["31727171"],"is_preprint":false},{"year":2013,"finding":"HIF-2α (but not HIF-1α) directly binds the Wnt10b enhancer region under hypoxic conditions to drive Wnt10b expression in adipogenic cells; hypoxia-conditioned medium containing Wnt10b activates canonical Wnt signaling (LRP6 phosphorylation, β-catenin-dependent transcription) and inhibits adipogenesis in normoxic cells.","method":"ChIP for HIF-2α at Wnt10b enhancer, HIF-2α-deficient cells, hypoxia-conditioned medium, Wnt reporter assays, LRP6 phosphorylation assay","journal":"The Journal of biological chemistry","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP demonstrates direct HIF-2α binding, functional epistasis with HIF-2α-deficient cells, single lab","pmids":["23900840"],"is_preprint":false},{"year":2016,"finding":"XBP1s directly induces transcription of miR-148a by binding to a response element in the miR-148a promoter (demonstrated by point mutation analysis and ChIP); miR-148a binds the 3'UTR of Wnt10b mRNA to suppress Wnt10b expression and β-catenin activity during adipogenesis, constituting a post-transcriptional silencing axis XBP1s → miR-148a → Wnt10b.","method":"ChIP for XBP1s at miR-148a promoter, point mutation of XBP1 response element, 3'UTR reporter assay, miR-148a mimic/knockdown in 3T3-L1 cells","journal":"Experimental & molecular medicine","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct ChIP and mutagenesis of binding site, 3'UTR reporter validation, functional adipogenesis readout, single lab","pmids":["27055562"],"is_preprint":false},{"year":2013,"finding":"XBP1 transcription factor directly binds the Wnt10b promoter and suppresses Wnt10b expression, reducing β-catenin signaling and promoting adipogenic differentiation of 3T3-L1 preadipocytes; XBP1 and Wnt10b display reciprocal expression patterns during adipogenesis.","method":"XBP1 ChIP on Wnt10b promoter, reporter assays, siRNA knockdown, Western blot for β-catenin, 3T3-L1 adipogenesis assay","journal":"FEBS letters","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct promoter binding by ChIP, functional adipogenesis readout, single lab","pmids":["23603388"],"is_preprint":false},{"year":2017,"finding":"MAT2A interacts with Ezh2 and MafK and is recruited to the Wnt10b promoter to repress Wnt10b expression by promoting H3K27 methylation; MAT2A-mediated suppression of Wnt10b inhibits Wnt/β-catenin signaling and promotes adipogenesis.","method":"Co-immunoprecipitation of MAT2A-Ezh2-MafK, ChIP for H3K27me3 and MAT2A at Wnt10b promoter, MAT2A overexpression/knockdown, adipogenesis assays","journal":"Biochimica et biophysica acta. Molecular and cell biology of lipids","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — Co-IP and ChIP demonstrate direct epigenetic regulation of Wnt10b promoter, single lab","pmids":["29133280"],"is_preprint":false},{"year":2019,"finding":"Wnt10b is localized at the base of primary cilia in osteoblasts; sinusoidal electromagnetic fields (SEMFs) cause Wnt10b to disappear from/be released from primary cilia, activating Wnt/β-catenin signaling in osteoblasts; abrogation of primary cilia by IFT88 siRNA blocks SEMF-mediated Wnt10b/β-catenin activation and osteogenic differentiation.","method":"IFT88 siRNA knockdown, immunofluorescence localization of Wnt10b at primary cilia, Wnt10b siRNA, osteoblast differentiation assays in rat calvarial osteoblasts, in vivo microCT in rats","journal":"Journal of bone and mineral research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — subcellular localization to primary cilia with functional consequence demonstrated, epistasis with IFT88, single lab","pmids":["30779853"],"is_preprint":false},{"year":2015,"finding":"After myocardial infarction, Wnt10b is expressed in cardiomyocytes and localizes to intercalated discs; Wnt10b is transiently induced in peri-infarct cardiomyocytes; Wnt10b gain-of-function promotes cardiac repair by stimulating VEGFR2 expression in endothelial cells and angiopoietin-1 in vascular smooth muscle cells through NF-κB activation, coordinating neovascularization and reducing fibrosis.","method":"Histological localization in mouse and human hearts, coronary artery ligation/cryoinjury models, cardiomyocyte-specific Wnt10b gain-of-function mouse line, VEGFR2/Ang-1 expression analysis, NF-κB reporter assays","journal":"Circulation research","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — subcellular localization (intercalated discs), in vivo gain-of-function with defined molecular targets (VEGFR2, Ang-1, NF-κB), single lab","pmids":["26338900"],"is_preprint":false},{"year":2009,"finding":"In skeletal muscle cells, Wnt10b and SREBP-1c show reciprocal expression; knockdown of SREBP-1 induces Wnt10b expression and activates Wnt/β-catenin pathway; silencing Wnt10b induces SREBP-1c expression; Wnt/β-catenin activation increases insulin sensitivity by decreasing intramyocellular lipid deposition through SREBP-1c downregulation and increasing glucose transport via differential Akt and AMPK activation.","method":"siRNA knockdown of SREBP-1 and Wnt10b, Wnt10b overexpression, GSK-3β inhibition, glucose transport assays, Akt/AMPK pathway analysis in myotubes","journal":"PloS one","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — reciprocal knockdown epistasis, multiple pathway readouts, single lab","pmids":["20041157"],"is_preprint":false},{"year":2022,"finding":"BMI1 epigenetically represses Wnt10b transcription in spermatogonial stem cells (SSCs) by increasing H2AK119ub and decreasing H3K4me3 at the Wnt10b locus; BMI1 inhibition leads to Wnt10b upregulation, nuclear translocation of β-catenin, and impaired SSC maintenance; suppression of Wnt/β-catenin signaling restores SSC maintenance in BMI1-deficient SSCs.","method":"BMI1 knockout mouse model, chromatin modification analysis (H2AK119ub, H3K4me3), β-catenin localization, Wnt/β-catenin inhibition, SSC functional assays in vitro and in vivo","journal":"International journal of biological sciences","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — epigenetic mechanism demonstrated with histone marks, genetic epistasis via β-catenin inhibition rescue, single lab","pmids":["35541907"],"is_preprint":false},{"year":2007,"finding":"WNT10B activates β-catenin/Tcf signaling but also has β-catenin/Tcf-independent growth suppression activity; fibroblast growth factor (FGF) synergizes with WNT10B to switch it from growth suppressor to growth promoter; WNT10B is silenced by promoter DNA methylation in 46% of primary hepatocellular carcinomas.","method":"WNT10B overexpression in cancer cell lines, dominant-negative hTcf-4, mutant β-catenin transduction, anchorage-independent growth assay, 5-aza-2'deoxycytidine treatment, methylation analysis, FGF co-treatment","journal":"Molecular biology of the cell","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — epistasis with dominant-negative TCF-4 and mutant β-catenin, functional growth assays, promoter methylation analysis, single lab","pmids":["17761539"],"is_preprint":false},{"year":2007,"finding":"WNT10B treatment of osteosarcoma cells (U2OS) activates Wnt, NF-κB, and Notch pathways; Wnt10b (but not Wnt3a) upregulates Notch-1, Jagged-1, and activates Notch-responsive genes Hes-1 and Hey-1, and stimulates NF-κB reporter activity; IL-1α and TNF-α are upregulated at transcript and protein levels.","method":"Wnt10b-expressing U2OS cell line, microarray analysis, NF-κB reporter assay, Hey-1 reporter assay, qRT-PCR, Western blot, comparison with Wnt3a","journal":"Journal of cellular biochemistry","confidence":"Medium","confidence_rationale":"Tier 3 / Moderate — reporter assays confirm pathway activation, Wnt-specific comparison (Wnt10b vs Wnt3a), single lab but multiple validated pathways","pmids":["21321991"],"is_preprint":false},{"year":2006,"finding":"WNT10B C256Y naturally-occurring missense variant abrogates the ability of WNT10B to activate canonical WNT signaling and block adipogenesis in functional assays, establishing loss of canonical signaling as the mechanism underlying this obesity-associated mutation.","method":"Functional assay of WNT10B C256Y mutant for canonical WNT signaling activation and adipogenesis inhibition, comparison to wild-type","journal":"Diabetologia","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — direct mutagenesis functional assay, single lab, important mechanistic validation of human variant","pmids":["16477437"],"is_preprint":false},{"year":2016,"finding":"WNT10B mutations identified in oligodontia patients (p.Arg211Gln, p.Pro190Arg, p.Trp262*, p.Phe284Cys) cannot normally enhance canonical Wnt signaling in HEPG2 cells (TOPFlash reporter) and cannot efficiently induce endothelial differentiation of dental pulp stem cells.","method":"TOPFlash luciferase reporter assay, dental pulp stem cell endothelial differentiation assay, Sanger sequencing","journal":"American journal of human genetics","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — functional validation of multiple mutations by reporter assay and differentiation assay, single lab","pmids":["27321946"],"is_preprint":false},{"year":2012,"finding":"Wnt10b-induced hair follicle regeneration in vivo requires canonical Wnt signaling: Wnt10b causes nuclear translocation of β-catenin, and knockdown of β-catenin with siRNA abrogates Wnt10b-induced hair follicle telogen-to-anagen transition; siRNA knockdown of Wnt10b blocks anagen onset.","method":"Intradermal injection of adenovirus-Wnt10b in mice, β-catenin siRNA co-treatment, Wnt10b siRNA, immunofluorescence for nuclear β-catenin, hair follicle cycling assessment","journal":"The Journal of investigative dermatology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — in vivo epistasis with β-catenin knockdown, defined molecular mechanism, single lab","pmids":["22832493"],"is_preprint":false},{"year":2013,"finding":"Ovariectomy expands short-term hematopoietic stem cells (ST-HSPCs) through CD40L expressed on T cells; CD40L is required for ovariectomy to stimulate T-cell Wnt10b production; Wnt10b activates Wnt signaling in HSPCs and stromal cells; ovariectomy fails to expand ST-HSPCs in CD40L-null mice and in mice lacking T-cell Wnt10b.","method":"Ovariectomy in CD40L-null mice, T-cell-specific Wnt10b null mice, bone marrow transplantation assays, HSPC flow cytometry","journal":"Blood","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — two genetic knockout models demonstrating epistasis, defined pathway (CD40L → T-cell Wnt10b → HSPC Wnt signaling), single lab","pmids":["23954891"],"is_preprint":false},{"year":2021,"finding":"PTEN reduces BMP9-induced Wnt10b expression in mesenchymal stem cells through disrupting interaction between CREB and BMP/Smad1/5/9 signaling; p-CREB and p-Smad1/5/9 interact and are enriched at the Wnt10b promoter; PI3K inhibition (Ly294002) and rapamycin both reduce BMP9-induced Wnt10b expression, placing Wnt10b downstream of PI3K/mTOR and BMP/Smad signaling.","method":"Co-immunoprecipitation of CREB-Smad1/5/9, ChIP at Wnt10b promoter, PTEN overexpression/knockdown, PI3K and mTOR inhibitors, ALP activity and mineralization assays, in vivo bone mass assay","journal":"Frontiers in cell and developmental biology","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — ChIP and Co-IP define transcriptional regulation of Wnt10b locus, pharmacological and genetic epistasis, single lab","pmids":["33614622"],"is_preprint":false},{"year":2011,"finding":"Leucine-rich Amelogenin Peptide (LRAP) promotes osteogenesis and inhibits adipogenesis of MSCs by upregulating Wnt10b expression to activate canonical Wnt/β-catenin signaling; Wnt10b siRNA knockdown abrogates LRAP's effects on MSC fate.","method":"LRAP treatment of ST2 cells, Wnt10b siRNA knockdown, sFRP-1 Wnt inhibition, Wnt/β-catenin reporter assays, osteogenic/adipogenic differentiation assays","journal":"Biomaterials","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — genetic epistasis (Wnt10b KD abolishes LRAP effect), Wnt inhibitor control, single lab","pmids":["21663957"],"is_preprint":false},{"year":2006,"finding":"Purified recombinant Wnt10b protein promotes differentiation of primary skin epithelial cells toward hair shaft and inner root sheath identity, inducing expression of keratin 1, keratin 2, loricrin, mHa5, mHb5, and reducing keratin 5; this differentiation involves the canonical Wnt signaling pathway (TCF reporter activation).","method":"Recombinant Wnt10b protein purification from lymphocyte supernatant, primary skin epithelial cell culture, immunocytochemistry, RT-PCR for differentiation markers, TCF reporter (pTOPFLASH) assay","journal":"Biochemical and biophysical research communications","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — purified protein directly applied to cells, canonical pathway activation confirmed by reporter, multiple differentiation markers, single lab","pmids":["16510119"],"is_preprint":false},{"year":2012,"finding":"FHL2 silencing reduces Wnt10b expression in mesenchymal cells, and Wnt10b overexpression overcomes the negative effect of FHL2 knockdown on osteoblast gene expression; FHL2 knockout mice show decreased Wnt5a and Wnt10b expression in bone marrow with reduced bone mass and osteoblast function.","method":"FHL2 shRNA knockdown, Wnt10b overexpression rescue, FHL2 knockout mice, histomorphometry, qRT-PCR of Wnt molecules and osteoblast genes","journal":"Bone","confidence":"Medium","confidence_rationale":"Tier 2 / Moderate — epistasis demonstrated by Wnt10b overexpression rescue of FHL2-KD phenotype, confirmed in vivo in knockout mice, single lab","pmids":["23201222"],"is_preprint":false}],"current_model":"WNT10B is a secreted canonical Wnt ligand that activates β-catenin/TCF-dependent transcriptional programs to control mesenchymal stem cell fate—promoting osteoblastogenesis (via induction of Runx2, Dlx5, osterix) while suppressing adipogenesis (via suppression of PPARγ and C/EBPα)—and additionally signals through β-catenin-independent mechanisms (Wnt/STOP via GSK3β to regulate mitotic fidelity, and RAC1 to drive proliferation); WNT10B is produced by immune cells (particularly CD8+ T cells) in response to iPTH and butyrate/Treg-mediated NFAT1-SMAD3 complex assembly, acts via exosomes for paracrine and autocrine signaling (including mTOR activation in neurons for axonal regeneration), and its expression is regulated epigenetically (by NSD1-H3K36me2, BMI1-H2AK119ub, MAT2A-EZH2-H3K27me3) and post-transcriptionally (by miR-148a downstream of XBP1s)."},"narrative":{"mechanistic_narrative":"WNT10B is a secreted canonical Wnt ligand that controls mesenchymal progenitor cell fate, directing precursors toward osteoblastogenesis (via induction of Runx2, Dlx5, and osterix) while suppressing adipogenesis (via repression of C/EBPα and PPARγ), with reciprocal gain- and loss-of-function in mice establishing its endogenous role in bone formation and fat restraint [PMID:15728361, PMID:15190075, PMID:20499361]. These fate-determining effects on mesenchymal stem cells require β-catenin, since β-catenin knockdown abolishes both the pro-osteogenic and anti-adipogenic activities of WNT10B [PMID:21872687], and a naturally occurring obesity-associated C256Y variant loses canonical signaling capacity [PMID:16477437]. In the skeletal anabolic axis, WNT10B is produced by bone marrow CD8+ T cells in response to intermittent parathyroid hormone and to gut microbiota-derived butyrate acting through Treg cells, the latter driving an NFAT1-SMAD3 transcription complex that induces Wnt10b; T-cell-derived WNT10B then activates canonical Wnt signaling in preosteoblasts and mediates the sclerostin-independent component of iPTH bone anabolism [PMID:19723499, PMID:30446387, PMID:24357520]. Beyond β-catenin, WNT10B signals through β-catenin-independent routes: a Wnt/STOP (LRP6-DVL-dependent) pathway that suppresses GSK3β to maintain mitotic microtubule dynamics and chromosome segregation fidelity [PMID:33257473], and nuclear RAC1 transport that drives Cyclin D1-dependent proliferation [PMID:26370090]. WNT10B can be trafficked via fibroblast-derived exosomes for paracrine and autocrine action, including mTOR activation that supports axonal regeneration after optic nerve injury [PMID:28394344, PMID:28683327]. In cancer, WNT10B activates β-catenin to upregulate HMGA2 and sustain a β-CATENIN/HMGA2/EZH2 autoregulatory loop driving proliferation and chemoresistance [PMID:23307470, PMID:30563890]. Its expression is tightly controlled epigenetically by NSD1-mediated H3K36me2, BMI1-mediated H2AK119ub, and MAT2A-EZH2-mediated H3K27me3, and post-transcriptionally by miR-148a acting downstream of XBP1s [PMID:31727171, PMID:35541907, PMID:29133280, PMID:27055562, PMID:23603388].","teleology":[{"year":1997,"claim":"Established WNT10B as a developmentally and oncogenically active Wnt ligand in vivo, before its mesenchymal fate role was known.","evidence":"MMTV-Wnt10b transgenic mice with mammary phenotyping and an FGF-3 genetic cross","pmids":["9393971"],"confidence":"High","gaps":["Did not define the signaling pathway (β-catenin vs other)","Did not identify direct transcriptional targets"]},{"year":2003,"claim":"Showed WNT10B has a conserved developmental patterning function redundant with Wnt1 at the midbrain-hindbrain boundary.","evidence":"Zebrafish wnt1-wnt10b deficiency and morpholino knockdown with in situ hybridization and epistasis to Pax2.1/Fgf8","pmids":["12591239"],"confidence":"High","gaps":["Redundancy with Wnt1 obscures Wnt10b-specific requirement","No biochemical pathway analysis"]},{"year":2005,"claim":"Defined the core function: WNT10B switches mesenchymal precursor fate toward bone and away from fat via defined transcription factor targets, and is required endogenously for trabecular bone.","evidence":"FABP4-Wnt10b transgenic and Wnt10b knockout mice with histomorphometry and adipose/metabolic phenotyping","pmids":["15728361","15190075","15673614"],"confidence":"High","gaps":["Did not pin the effect on β-catenin causally","Receptor context for WNT10B not defined"]},{"year":2006,"claim":"Linked WNT10B loss-of-canonical-signaling directly to a human obesity-associated variant, validating the anti-adipogenic mechanism in humans.","evidence":"Functional assay of the C256Y missense variant for canonical signaling and adipogenesis block","pmids":["16477437"],"confidence":"Medium","gaps":["Single-variant functional test","No structural basis for loss of activity"]},{"year":2009,"claim":"Identified an immune-skeletal axis in which iPTH stimulates CD8+ T-cell WNT10B to drive osteoblast commitment, redefining the cellular source of bone-anabolic Wnt.","evidence":"iPTH treatment in T-cell-null and T-cell-specific Wnt10b conditional knockout mice with histomorphometry","pmids":["19723499"],"confidence":"High","gaps":["Did not resolve receptor on preosteoblasts","Mechanism of T-cell Wnt10b induction not yet known"]},{"year":2011,"claim":"Established β-catenin as strictly required for WNT10B control of MSC fate via genetic epistasis.","evidence":"β-catenin knockdown in ST2 and 3T3-L1 cells with osteogenic/adipogenic readouts","pmids":["21872687"],"confidence":"High","gaps":["Did not exclude parallel β-catenin-independent contributions in other cell types"]},{"year":2013,"claim":"Connected WNT10B to oncogenic transcription by identifying HMGA2 as a direct β-catenin target mediating TNBC 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osteoblastogenesis and away from adipogenesis by inducing osteoblastogenic transcription factors Runx2, Dlx5, and osterix while suppressing adipogenic transcription factors C/EBPα and PPARγ; Wnt10b-/- mice have decreased trabecular bone confirming its endogenous role in bone formation.\",\n      \"method\": \"Transgenic mouse overexpression (FABP4-Wnt10b), Wnt10b knockout mice, pharmacological and genetic epistasis approaches, histomorphometry\",\n      \"journal\": \"Proceedings of the National Academy of Sciences of the United States of America\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — reciprocal gain- and loss-of-function in vivo with defined molecular targets and multiple orthogonal methods; independently replicated across multiple labs\",\n      \"pmids\": [\"15728361\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2004,\n      \"finding\": \"Wnt10b inhibits development of both white and brown adipose tissue in vivo; transgenic FABP4-Wnt10b mice show ~50% reduction in total body fat, resistance to diet-induced obesity, improved glucose tolerance and insulin sensitivity, and inability to maintain core body temperature (loss of brown adipose tissue function).\",\n      \"method\": \"Transgenic mouse model (FABP4-Wnt10b), histology, metabolic phenotyping, cold-exposure challenge\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — clean in vivo transgenic model with multiple orthogonal phenotypic readouts, replicated in subsequent studies\",\n      \"pmids\": [\"15190075\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"Wnt10b inhibits adipogenesis and stimulates osteoblastogenesis through a β-catenin-dependent mechanism; knockdown of β-catenin completely prevents both effects of Wnt10b on mesenchymal stem cell fate in bipotential ST2 cells and 3T3-L1 preadipocytes.\",\n      \"method\": \"Gain- and loss-of-function in ST2 and 3T3-L1 cells, β-catenin knockdown, osteoblastogenesis and adipogenesis assays\",\n      \"journal\": \"Bone\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic epistasis (β-catenin KD rescues Wnt10b effect), multiple orthogonal methods, replicated in multiple cell lines\",\n      \"pmids\": [\"21872687\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"Intermittent parathyroid hormone (iPTH) increases Wnt10b production by bone marrow CD8+ T cells, which then activate canonical Wnt signaling in preosteoblasts to stimulate osteoblastic commitment, proliferation, differentiation, and lifespan; T-cell-null mice and mice lacking T-cell-produced Wnt10b show no anabolic response to iPTH.\",\n      \"method\": \"In vivo iPTH treatment, T-cell-null mice, conditional Wnt10b knockout in T cells, histomorphometry, Wnt signaling assays in preosteoblasts\",\n      \"journal\": \"Cell metabolism\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple genetic knockout models demonstrating epistasis, clean in vivo phenotype with defined cellular and molecular mechanism, replicated in subsequent human studies\",\n      \"pmids\": [\"19723499\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"Gut microbiota-derived butyrate induces expansion of intestinal and bone marrow regulatory T (Treg) cells; Treg cells promote assembly of a NFAT1-SMAD3 transcription complex in CD8+ T cells, driving expression of Wnt10b, which mediates bone anabolic effects; reconstitution with Wnt10b-/- CD8+ T cells prevents butyrate-induced bone formation.\",\n      \"method\": \"Probiotic/butyrate supplementation in mice, germ-free mice, Treg depletion, TCRβ-/- mice reconstituted with Wnt10b-/- CD8+ T cells, ChIP for NFAT1-SMAD3 complex, microCT\",\n      \"journal\": \"Immunity\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple genetic models, ChIP demonstrating transcription complex, orthogonal in vivo and in vitro approaches in single rigorous study\",\n      \"pmids\": [\"30446387\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"WNT10B activates canonical β-catenin signaling in triple-negative breast cancer cells, leading to transcriptional upregulation of HMGA2 (demonstrated by ChIP); HMGA2 is necessary and sufficient for WNT10B-driven proliferation of TNBC cells; siRNA to HMGA2 decreases proliferation.\",\n      \"method\": \"ChIP analysis, siRNA knockdown, luciferase reporter assays, transgenic mouse tumor model, Western blotting\",\n      \"journal\": \"EMBO molecular medicine\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP demonstrates direct transcriptional activation, supported by siRNA epistasis and in vivo transgenic model, single lab but multiple orthogonal methods\",\n      \"pmids\": [\"23307470\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2018,\n      \"finding\": \"In chemoresistant TNBC, WNT10B activates a β-CATENIN/HMGA2/EZH2 autoregulatory loop; HMGA2 and EZH2 displace Groucho/TLE1 from TCF-4 and serve as gatekeepers for K49 acetylation on β-CATENIN essential for transcription; HMGA2-EZH2 interacts with the PRC2 complex.\",\n      \"method\": \"Co-immunoprecipitation, MMTV-Wnt10b transgenic mice, Hmga2 haploinsufficiency, PDX model, Western blot, molecular epistasis\",\n      \"journal\": \"Cancer research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP and in vivo genetic model, single lab, mechanistic detail on β-catenin K49 acetylation\",\n      \"pmids\": [\"30563890\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"TGF-β1 stimulates Wnt10b production in osteoclasts through Smad2/3 activation (not AKT or MAPK); TGF-β1-induced osteoclast-derived Wnt10b promotes osteoblast mineralization; blocking Wnt10b with DKK1 suppresses this mineralization-promoting activity.\",\n      \"method\": \"In vitro osteoclast culture, TGF-β1 treatment, Smad2/3 signaling blockade, DKK1 inhibition, conditioned media osteoblast mineralization assay\",\n      \"journal\": \"Endocrinology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — defined signaling pathway (Smad2/3 dependence), conditioned media functional assay, single lab with multiple pathway inhibitors\",\n      \"pmids\": [\"23861379\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2010,\n      \"finding\": \"Wnt10b deficiency in null mice results in a progressive, age-dependent reduction in mesenchymal progenitor cells (assessed by colony-forming unit assays) and trabecular bone loss, with reduced expression of osteoblast differentiation markers in bone marrow stromal cells.\",\n      \"method\": \"Wnt10b-/- mice, microCT, histomorphometry, colony-forming unit assays, osteogenic gene expression analysis\",\n      \"journal\": \"Journal of bone and mineral research\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — loss-of-function mouse model with multiple orthogonal readouts, multiple inbred backgrounds tested\",\n      \"pmids\": [\"20499361\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2005,\n      \"finding\": \"Wnt10b deficiency in myoblasts increases adipogenic potential, contributing to excessive lipid accumulation in regenerating myofibers; overexpression of Wnt10b in aged myoblasts inhibits adipogenic gene expression and sustains myogenic differentiation; GSK-3 inhibition mimics Wnt10b overexpression effects.\",\n      \"method\": \"Wnt10b null myoblasts, Wnt10b overexpression, GSK-3 inhibition, adipogenic/myogenic differentiation assays, in vivo muscle regeneration analysis\",\n      \"journal\": \"Molecular biology of the cell\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — reciprocal gain- and loss-of-function with defined phenotypic readouts in vitro and in vivo, pharmacological epistasis\",\n      \"pmids\": [\"15673614\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 1997,\n      \"finding\": \"Overexpression of Wnt-10b in mammary glands of transgenic mice (MMTV-Wnt10b) causes hypermorphic ductal development, precocious alveolar formation in virgins, male gynecomastia bypassing androgen repression, and high susceptibility to mammary adenocarcinoma; co-expression with FGF-3/int-2 causes potent interaction and disorganized mammary epithelium.\",\n      \"method\": \"MMTV-Wnt10b transgenic mouse model, histology, tumor incidence analysis, MMTV-Wnt10b × MMTV-FGF3 cross\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — rigorous in vivo transgenic gain-of-function with defined developmental and oncogenic phenotypes, genetic interaction with FGF-3\",\n      \"pmids\": [\"9393971\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"Wnt10b secreted from fibroblasts is transported via exosomes to breast cancer epithelial cells; paracrine Wnt10b from p85α-deficient fibroblasts promotes cancer progression through epithelial-to-mesenchymal transition via the canonical Wnt pathway.\",\n      \"method\": \"Conditioned media experiments, exosome isolation/characterization, co-culture, EMT marker analysis, Western blot\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — exosome-mediated transport demonstrated, canonical Wnt pathway implicated, single lab\",\n      \"pmids\": [\"28394344\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"Fibroblast-derived exosomes (FD exosomes) mobilize Wnt10b toward lipid rafts, activating mTOR signaling via GSK3β and TSC2; autocrine Wnt10b-mTOR pathway is required for FD exosome-promoted axonal regeneration after optic nerve injury, as Wnt10b-deleted animals show strongly reduced regeneration.\",\n      \"method\": \"Wnt10b knockout mice, optic nerve injury model, lipid raft fractionation, mTOR signaling pathway analysis, in vitro neurite growth assays\",\n      \"journal\": \"Cell reports\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic knockout with defined functional phenotype, biochemical pathway analysis, single lab\",\n      \"pmids\": [\"28683327\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"miR-148a directly targets WNT10B mRNA via its 3'UTR (demonstrated by luciferase reporter assay); silencing of miR-148a in cancer-associated fibroblasts elevates WNT10B protein levels and promotes migration of endometrial cancer cell lines; re-introduction of miR-148a reduces WNT10B and impairs cancer cell migration.\",\n      \"method\": \"3'UTR luciferase reporter assay, miR-148a lentiviral overexpression, conditioned media migration assays, Western blot\",\n      \"journal\": \"Oncogene\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — direct 3'UTR target validation by luciferase assay, functional migration phenotype, multiple cancer cell lines tested\",\n      \"pmids\": [\"22890324\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2003,\n      \"finding\": \"In zebrafish, wnt10b and wnt1 provide partially redundant functions at the midbrain-hindbrain boundary (MHB); double deletion of both loci causes loss of pax2.1, en2, and her5 expression in the ventral MHB; wnt10b/wnt1 are required to maintain threshold levels of Pax2.1 and Fgf8 at the MHB.\",\n      \"method\": \"Zebrafish wnt1-wnt10b deficiency allele generation, morpholino knockdown, in situ hybridization, genetic epistasis with Pax2.1 and Fgf8 mutants\",\n      \"journal\": \"Developmental biology\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — genetic deficiency allele plus morpholino, defined epistasis with two other pathway members, in vivo readouts\",\n      \"pmids\": [\"12591239\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2020,\n      \"finding\": \"Wnt10b is required for normal mitotic microtubule dynamics and chromosome segregation in human somatic cells; Wnt10b acts through a Wnt/STOP (LRP6-DVL-dependent, β-catenin-independent) pathway to suppress GSK3β activity; loss of Wnt10b causes increased microtubule growth rates in mitotic spindles, whole chromosome missegregation, and aneuploidy.\",\n      \"method\": \"Wnt10b knockdown/knockout in human somatic cells, live-cell imaging of mitosis, microtubule dynamics measurements, Wnt/STOP pathway analysis, chromosome segregation assays\",\n      \"journal\": \"Life science alliance\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — defined β-catenin-independent mechanism, loss-of-function with specific mitotic phenotypes, single lab\",\n      \"pmids\": [\"33257473\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"WNT10B causes nuclear transport and binding of both RAC1 and β-catenin in human corneal endothelial cells, activating Cyclin D1 expression and proliferation through simultaneously β-catenin-dependent and β-catenin-independent (RAC1) pathways.\",\n      \"method\": \"Nuclear fractionation, co-immunoprecipitation, reporter assays, proliferation assays in human corneal endothelial cells\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — nuclear transport demonstrated by fractionation, co-IP of RAC1/β-catenin, functional proliferation readout, single lab\",\n      \"pmids\": [\"26370090\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2014,\n      \"finding\": \"The sclerostin-independent bone anabolic activity of iPTH is mediated exclusively by T-cell-produced Wnt10b; in T-cell-null mice and mice lacking T-cell Wnt10b expression, combined iPTH + anti-sclerostin antibody treatment is equivalent to anti-sclerostin antibody alone in increasing osteoblast pool and bone volume.\",\n      \"method\": \"T-cell-null mice, T-cell-specific Wnt10b knockout mice, anti-sclerostin antibody treatment, iPTH treatment, histomorphometry, microCT\",\n      \"journal\": \"Journal of bone and mineral research\",\n      \"confidence\": \"High\",\n      \"confidence_rationale\": \"Tier 2 / Strong — multiple genetic models demonstrating epistasis, clean pharmacological dissection of mechanism, multiple orthogonal bone endpoints\",\n      \"pmids\": [\"24357520\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"NSD1 histone methyltransferase promotes Wnt10b expression by mediating H3K36me2 methylation at the Wnt10b locus; NSD1 knockout increases H3K27me3 and reduces H3K36me2, suppressing Wnt10b expression and inactivating the Wnt/β-catenin pathway in hepatocellular carcinoma cells.\",\n      \"method\": \"CRISPR/Cas9 NSD1 knockout, ChIP for histone marks at Wnt10b locus, Western blot, reporter assays, xenograft model\",\n      \"journal\": \"Journal of experimental & clinical cancer research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP demonstrates epigenetic regulation of Wnt10b locus, CRISPR KO with functional readouts, single lab\",\n      \"pmids\": [\"31727171\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"HIF-2α (but not HIF-1α) directly binds the Wnt10b enhancer region under hypoxic conditions to drive Wnt10b expression in adipogenic cells; hypoxia-conditioned medium containing Wnt10b activates canonical Wnt signaling (LRP6 phosphorylation, β-catenin-dependent transcription) and inhibits adipogenesis in normoxic cells.\",\n      \"method\": \"ChIP for HIF-2α at Wnt10b enhancer, HIF-2α-deficient cells, hypoxia-conditioned medium, Wnt reporter assays, LRP6 phosphorylation assay\",\n      \"journal\": \"The Journal of biological chemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP demonstrates direct HIF-2α binding, functional epistasis with HIF-2α-deficient cells, single lab\",\n      \"pmids\": [\"23900840\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"XBP1s directly induces transcription of miR-148a by binding to a response element in the miR-148a promoter (demonstrated by point mutation analysis and ChIP); miR-148a binds the 3'UTR of Wnt10b mRNA to suppress Wnt10b expression and β-catenin activity during adipogenesis, constituting a post-transcriptional silencing axis XBP1s → miR-148a → Wnt10b.\",\n      \"method\": \"ChIP for XBP1s at miR-148a promoter, point mutation of XBP1 response element, 3'UTR reporter assay, miR-148a mimic/knockdown in 3T3-L1 cells\",\n      \"journal\": \"Experimental & molecular medicine\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct ChIP and mutagenesis of binding site, 3'UTR reporter validation, functional adipogenesis readout, single lab\",\n      \"pmids\": [\"27055562\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"XBP1 transcription factor directly binds the Wnt10b promoter and suppresses Wnt10b expression, reducing β-catenin signaling and promoting adipogenic differentiation of 3T3-L1 preadipocytes; XBP1 and Wnt10b display reciprocal expression patterns during adipogenesis.\",\n      \"method\": \"XBP1 ChIP on Wnt10b promoter, reporter assays, siRNA knockdown, Western blot for β-catenin, 3T3-L1 adipogenesis assay\",\n      \"journal\": \"FEBS letters\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct promoter binding by ChIP, functional adipogenesis readout, single lab\",\n      \"pmids\": [\"23603388\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2017,\n      \"finding\": \"MAT2A interacts with Ezh2 and MafK and is recruited to the Wnt10b promoter to repress Wnt10b expression by promoting H3K27 methylation; MAT2A-mediated suppression of Wnt10b inhibits Wnt/β-catenin signaling and promotes adipogenesis.\",\n      \"method\": \"Co-immunoprecipitation of MAT2A-Ezh2-MafK, ChIP for H3K27me3 and MAT2A at Wnt10b promoter, MAT2A overexpression/knockdown, adipogenesis assays\",\n      \"journal\": \"Biochimica et biophysica acta. Molecular and cell biology of lipids\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — Co-IP and ChIP demonstrate direct epigenetic regulation of Wnt10b promoter, single lab\",\n      \"pmids\": [\"29133280\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2019,\n      \"finding\": \"Wnt10b is localized at the base of primary cilia in osteoblasts; sinusoidal electromagnetic fields (SEMFs) cause Wnt10b to disappear from/be released from primary cilia, activating Wnt/β-catenin signaling in osteoblasts; abrogation of primary cilia by IFT88 siRNA blocks SEMF-mediated Wnt10b/β-catenin activation and osteogenic differentiation.\",\n      \"method\": \"IFT88 siRNA knockdown, immunofluorescence localization of Wnt10b at primary cilia, Wnt10b siRNA, osteoblast differentiation assays in rat calvarial osteoblasts, in vivo microCT in rats\",\n      \"journal\": \"Journal of bone and mineral research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — subcellular localization to primary cilia with functional consequence demonstrated, epistasis with IFT88, single lab\",\n      \"pmids\": [\"30779853\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2015,\n      \"finding\": \"After myocardial infarction, Wnt10b is expressed in cardiomyocytes and localizes to intercalated discs; Wnt10b is transiently induced in peri-infarct cardiomyocytes; Wnt10b gain-of-function promotes cardiac repair by stimulating VEGFR2 expression in endothelial cells and angiopoietin-1 in vascular smooth muscle cells through NF-κB activation, coordinating neovascularization and reducing fibrosis.\",\n      \"method\": \"Histological localization in mouse and human hearts, coronary artery ligation/cryoinjury models, cardiomyocyte-specific Wnt10b gain-of-function mouse line, VEGFR2/Ang-1 expression analysis, NF-κB reporter assays\",\n      \"journal\": \"Circulation research\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — subcellular localization (intercalated discs), in vivo gain-of-function with defined molecular targets (VEGFR2, Ang-1, NF-κB), single lab\",\n      \"pmids\": [\"26338900\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2009,\n      \"finding\": \"In skeletal muscle cells, Wnt10b and SREBP-1c show reciprocal expression; knockdown of SREBP-1 induces Wnt10b expression and activates Wnt/β-catenin pathway; silencing Wnt10b induces SREBP-1c expression; Wnt/β-catenin activation increases insulin sensitivity by decreasing intramyocellular lipid deposition through SREBP-1c downregulation and increasing glucose transport via differential Akt and AMPK activation.\",\n      \"method\": \"siRNA knockdown of SREBP-1 and Wnt10b, Wnt10b overexpression, GSK-3β inhibition, glucose transport assays, Akt/AMPK pathway analysis in myotubes\",\n      \"journal\": \"PloS one\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — reciprocal knockdown epistasis, multiple pathway readouts, single lab\",\n      \"pmids\": [\"20041157\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2022,\n      \"finding\": \"BMI1 epigenetically represses Wnt10b transcription in spermatogonial stem cells (SSCs) by increasing H2AK119ub and decreasing H3K4me3 at the Wnt10b locus; BMI1 inhibition leads to Wnt10b upregulation, nuclear translocation of β-catenin, and impaired SSC maintenance; suppression of Wnt/β-catenin signaling restores SSC maintenance in BMI1-deficient SSCs.\",\n      \"method\": \"BMI1 knockout mouse model, chromatin modification analysis (H2AK119ub, H3K4me3), β-catenin localization, Wnt/β-catenin inhibition, SSC functional assays in vitro and in vivo\",\n      \"journal\": \"International journal of biological sciences\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — epigenetic mechanism demonstrated with histone marks, genetic epistasis via β-catenin inhibition rescue, single lab\",\n      \"pmids\": [\"35541907\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"WNT10B activates β-catenin/Tcf signaling but also has β-catenin/Tcf-independent growth suppression activity; fibroblast growth factor (FGF) synergizes with WNT10B to switch it from growth suppressor to growth promoter; WNT10B is silenced by promoter DNA methylation in 46% of primary hepatocellular carcinomas.\",\n      \"method\": \"WNT10B overexpression in cancer cell lines, dominant-negative hTcf-4, mutant β-catenin transduction, anchorage-independent growth assay, 5-aza-2'deoxycytidine treatment, methylation analysis, FGF co-treatment\",\n      \"journal\": \"Molecular biology of the cell\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — epistasis with dominant-negative TCF-4 and mutant β-catenin, functional growth assays, promoter methylation analysis, single lab\",\n      \"pmids\": [\"17761539\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2007,\n      \"finding\": \"WNT10B treatment of osteosarcoma cells (U2OS) activates Wnt, NF-κB, and Notch pathways; Wnt10b (but not Wnt3a) upregulates Notch-1, Jagged-1, and activates Notch-responsive genes Hes-1 and Hey-1, and stimulates NF-κB reporter activity; IL-1α and TNF-α are upregulated at transcript and protein levels.\",\n      \"method\": \"Wnt10b-expressing U2OS cell line, microarray analysis, NF-κB reporter assay, Hey-1 reporter assay, qRT-PCR, Western blot, comparison with Wnt3a\",\n      \"journal\": \"Journal of cellular biochemistry\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 3 / Moderate — reporter assays confirm pathway activation, Wnt-specific comparison (Wnt10b vs Wnt3a), single lab but multiple validated pathways\",\n      \"pmids\": [\"21321991\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"WNT10B C256Y naturally-occurring missense variant abrogates the ability of WNT10B to activate canonical WNT signaling and block adipogenesis in functional assays, establishing loss of canonical signaling as the mechanism underlying this obesity-associated mutation.\",\n      \"method\": \"Functional assay of WNT10B C256Y mutant for canonical WNT signaling activation and adipogenesis inhibition, comparison to wild-type\",\n      \"journal\": \"Diabetologia\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — direct mutagenesis functional assay, single lab, important mechanistic validation of human variant\",\n      \"pmids\": [\"16477437\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2016,\n      \"finding\": \"WNT10B mutations identified in oligodontia patients (p.Arg211Gln, p.Pro190Arg, p.Trp262*, p.Phe284Cys) cannot normally enhance canonical Wnt signaling in HEPG2 cells (TOPFlash reporter) and cannot efficiently induce endothelial differentiation of dental pulp stem cells.\",\n      \"method\": \"TOPFlash luciferase reporter assay, dental pulp stem cell endothelial differentiation assay, Sanger sequencing\",\n      \"journal\": \"American journal of human genetics\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — functional validation of multiple mutations by reporter assay and differentiation assay, single lab\",\n      \"pmids\": [\"27321946\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"Wnt10b-induced hair follicle regeneration in vivo requires canonical Wnt signaling: Wnt10b causes nuclear translocation of β-catenin, and knockdown of β-catenin with siRNA abrogates Wnt10b-induced hair follicle telogen-to-anagen transition; siRNA knockdown of Wnt10b blocks anagen onset.\",\n      \"method\": \"Intradermal injection of adenovirus-Wnt10b in mice, β-catenin siRNA co-treatment, Wnt10b siRNA, immunofluorescence for nuclear β-catenin, hair follicle cycling assessment\",\n      \"journal\": \"The Journal of investigative dermatology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — in vivo epistasis with β-catenin knockdown, defined molecular mechanism, single lab\",\n      \"pmids\": [\"22832493\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2013,\n      \"finding\": \"Ovariectomy expands short-term hematopoietic stem cells (ST-HSPCs) through CD40L expressed on T cells; CD40L is required for ovariectomy to stimulate T-cell Wnt10b production; Wnt10b activates Wnt signaling in HSPCs and stromal cells; ovariectomy fails to expand ST-HSPCs in CD40L-null mice and in mice lacking T-cell Wnt10b.\",\n      \"method\": \"Ovariectomy in CD40L-null mice, T-cell-specific Wnt10b null mice, bone marrow transplantation assays, HSPC flow cytometry\",\n      \"journal\": \"Blood\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — two genetic knockout models demonstrating epistasis, defined pathway (CD40L → T-cell Wnt10b → HSPC Wnt signaling), single lab\",\n      \"pmids\": [\"23954891\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2021,\n      \"finding\": \"PTEN reduces BMP9-induced Wnt10b expression in mesenchymal stem cells through disrupting interaction between CREB and BMP/Smad1/5/9 signaling; p-CREB and p-Smad1/5/9 interact and are enriched at the Wnt10b promoter; PI3K inhibition (Ly294002) and rapamycin both reduce BMP9-induced Wnt10b expression, placing Wnt10b downstream of PI3K/mTOR and BMP/Smad signaling.\",\n      \"method\": \"Co-immunoprecipitation of CREB-Smad1/5/9, ChIP at Wnt10b promoter, PTEN overexpression/knockdown, PI3K and mTOR inhibitors, ALP activity and mineralization assays, in vivo bone mass assay\",\n      \"journal\": \"Frontiers in cell and developmental biology\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — ChIP and Co-IP define transcriptional regulation of Wnt10b locus, pharmacological and genetic epistasis, single lab\",\n      \"pmids\": [\"33614622\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2011,\n      \"finding\": \"Leucine-rich Amelogenin Peptide (LRAP) promotes osteogenesis and inhibits adipogenesis of MSCs by upregulating Wnt10b expression to activate canonical Wnt/β-catenin signaling; Wnt10b siRNA knockdown abrogates LRAP's effects on MSC fate.\",\n      \"method\": \"LRAP treatment of ST2 cells, Wnt10b siRNA knockdown, sFRP-1 Wnt inhibition, Wnt/β-catenin reporter assays, osteogenic/adipogenic differentiation assays\",\n      \"journal\": \"Biomaterials\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — genetic epistasis (Wnt10b KD abolishes LRAP effect), Wnt inhibitor control, single lab\",\n      \"pmids\": [\"21663957\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2006,\n      \"finding\": \"Purified recombinant Wnt10b protein promotes differentiation of primary skin epithelial cells toward hair shaft and inner root sheath identity, inducing expression of keratin 1, keratin 2, loricrin, mHa5, mHb5, and reducing keratin 5; this differentiation involves the canonical Wnt signaling pathway (TCF reporter activation).\",\n      \"method\": \"Recombinant Wnt10b protein purification from lymphocyte supernatant, primary skin epithelial cell culture, immunocytochemistry, RT-PCR for differentiation markers, TCF reporter (pTOPFLASH) assay\",\n      \"journal\": \"Biochemical and biophysical research communications\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — purified protein directly applied to cells, canonical pathway activation confirmed by reporter, multiple differentiation markers, single lab\",\n      \"pmids\": [\"16510119\"],\n      \"is_preprint\": false\n    },\n    {\n      \"year\": 2012,\n      \"finding\": \"FHL2 silencing reduces Wnt10b expression in mesenchymal cells, and Wnt10b overexpression overcomes the negative effect of FHL2 knockdown on osteoblast gene expression; FHL2 knockout mice show decreased Wnt5a and Wnt10b expression in bone marrow with reduced bone mass and osteoblast function.\",\n      \"method\": \"FHL2 shRNA knockdown, Wnt10b overexpression rescue, FHL2 knockout mice, histomorphometry, qRT-PCR of Wnt molecules and osteoblast genes\",\n      \"journal\": \"Bone\",\n      \"confidence\": \"Medium\",\n      \"confidence_rationale\": \"Tier 2 / Moderate — epistasis demonstrated by Wnt10b overexpression rescue of FHL2-KD phenotype, confirmed in vivo in knockout mice, single lab\",\n      \"pmids\": [\"23201222\"],\n      \"is_preprint\": false\n    }\n  ],\n  \"current_model\": \"WNT10B is a secreted canonical Wnt ligand that activates β-catenin/TCF-dependent transcriptional programs to control mesenchymal stem cell fate—promoting osteoblastogenesis (via induction of Runx2, Dlx5, osterix) while suppressing adipogenesis (via suppression of PPARγ and C/EBPα)—and additionally signals through β-catenin-independent mechanisms (Wnt/STOP via GSK3β to regulate mitotic fidelity, and RAC1 to drive proliferation); WNT10B is produced by immune cells (particularly CD8+ T cells) in response to iPTH and butyrate/Treg-mediated NFAT1-SMAD3 complex assembly, acts via exosomes for paracrine and autocrine signaling (including mTOR activation in neurons for axonal regeneration), and its expression is regulated epigenetically (by NSD1-H3K36me2, BMI1-H2AK119ub, MAT2A-EZH2-H3K27me3) and post-transcriptionally (by miR-148a downstream of XBP1s).\"\n}\n```","stage2_raw":"{\n  \"mechanistic_narrative\": \"WNT10B is a secreted canonical Wnt ligand that controls mesenchymal progenitor cell fate, directing precursors toward osteoblastogenesis (via induction of Runx2, Dlx5, and osterix) while suppressing adipogenesis (via repression of C/EBP\\u03b1 and PPAR\\u03b3), with reciprocal gain- and loss-of-function in mice establishing its endogenous role in bone formation and fat restraint [#0, #1, #8]. These fate-determining effects on mesenchymal stem cells require \\u03b2-catenin, since \\u03b2-catenin knockdown abolishes both the pro-osteogenic and anti-adipogenic activities of WNT10B [#2], and a naturally occurring obesity-associated C256Y variant loses canonical signaling capacity [#29]. In the skeletal anabolic axis, WNT10B is produced by bone marrow CD8+ T cells in response to intermittent parathyroid hormone and to gut microbiota-derived butyrate acting through Treg cells, the latter driving an NFAT1-SMAD3 transcription complex that induces Wnt10b; T-cell-derived WNT10B then activates canonical Wnt signaling in preosteoblasts and mediates the sclerostin-independent component of iPTH bone anabolism [#3, #4, #17]. Beyond \\u03b2-catenin, WNT10B signals through \\u03b2-catenin-independent routes: a Wnt/STOP (LRP6-DVL-dependent) pathway that suppresses GSK3\\u03b2 to maintain mitotic microtubule dynamics and chromosome segregation fidelity [#15], and nuclear RAC1 transport that drives Cyclin D1-dependent proliferation [#16]. WNT10B can be trafficked via fibroblast-derived exosomes for paracrine and autocrine action, including mTOR activation that supports axonal regeneration after optic nerve injury [#11, #12]. In cancer, WNT10B activates \\u03b2-catenin to upregulate HMGA2 and sustain a \\u03b2-CATENIN/HMGA2/EZH2 autoregulatory loop driving proliferation and chemoresistance [#5, #6]. Its expression is tightly controlled epigenetically by NSD1-mediated H3K36me2, BMI1-mediated H2AK119ub, and MAT2A-EZH2-mediated H3K27me3, and post-transcriptionally by miR-148a acting downstream of XBP1s [#18, #26, #22, #20, #21].\",\n  \"teleology\": [\n    {\n      \"year\": 1997,\n      \"claim\": \"Established WNT10B as a developmentally and oncogenically active Wnt ligand in vivo, before its mesenchymal fate role was known.\",\n      \"evidence\": \"MMTV-Wnt10b transgenic mice with mammary phenotyping and an FGF-3 genetic cross\",\n      \"pmids\": [\"9393971\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Did not define the signaling pathway (\\u03b2-catenin vs other)\", \"Did not identify direct transcriptional targets\"]\n    },\n    {\n      \"year\": 2003,\n      \"claim\": \"Showed WNT10B has a conserved developmental patterning function redundant with Wnt1 at the midbrain-hindbrain boundary.\",\n      \"evidence\": \"Zebrafish wnt1-wnt10b deficiency and morpholino knockdown with in situ hybridization and epistasis to Pax2.1/Fgf8\",\n      \"pmids\": [\"12591239\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Redundancy with Wnt1 obscures Wnt10b-specific requirement\", \"No biochemical pathway analysis\"]\n    },\n    {\n      \"year\": 2005,\n      \"claim\": \"Defined the core function: WNT10B switches mesenchymal precursor fate toward bone and away from fat via defined transcription factor targets, and is required endogenously for trabecular bone.\",\n      \"evidence\": \"FABP4-Wnt10b transgenic and Wnt10b knockout mice with histomorphometry and adipose/metabolic phenotyping\",\n      \"pmids\": [\"15728361\", \"15190075\", \"15673614\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Did not pin the effect on \\u03b2-catenin causally\", \"Receptor context for WNT10B not defined\"]\n    },\n    {\n      \"year\": 2006,\n      \"claim\": \"Linked WNT10B loss-of-canonical-signaling directly to a human obesity-associated variant, validating the anti-adipogenic mechanism in humans.\",\n      \"evidence\": \"Functional assay of the C256Y missense variant for canonical signaling and adipogenesis block\",\n      \"pmids\": [\"16477437\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Single-variant functional test\", \"No structural basis for loss of activity\"]\n    },\n    {\n      \"year\": 2009,\n      \"claim\": \"Identified an immune-skeletal axis in which iPTH stimulates CD8+ T-cell WNT10B to drive osteoblast commitment, redefining the cellular source of bone-anabolic Wnt.\",\n      \"evidence\": \"iPTH treatment in T-cell-null and T-cell-specific Wnt10b conditional knockout mice with histomorphometry\",\n      \"pmids\": [\"19723499\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Did not resolve receptor on preosteoblasts\", \"Mechanism of T-cell Wnt10b induction not yet known\"]\n    },\n    {\n      \"year\": 2011,\n      \"claim\": \"Established \\u03b2-catenin as strictly required for WNT10B control of MSC fate via genetic epistasis.\",\n      \"evidence\": \"\\u03b2-catenin knockdown in ST2 and 3T3-L1 cells with osteogenic/adipogenic readouts\",\n      \"pmids\": [\"21872687\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"Did not exclude parallel \\u03b2-catenin-independent contributions in other cell types\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Connected WNT10B to oncogenic transcription by identifying HMGA2 as a direct \\u03b2-catenin target mediating TNBC proliferation.\",\n      \"evidence\": \"ChIP, HMGA2 siRNA epistasis, luciferase reporters and a transgenic tumor model\",\n      \"pmids\": [\"23307470\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"HMGA2 downstream effectors not fully defined\", \"Generalizability beyond TNBC unclear\"]\n    },\n    {\n      \"year\": 2013,\n      \"claim\": \"Expanded the regulatory inputs on WNT10B, showing hypoxia (HIF-2\\u03b1), TGF-\\u03b21/Smad in osteoclasts, SREBP-1c reciprocity, XBP1 repression, and CD40L-dependent T-cell production each control its expression or downstream metabolic output.\",\n      \"evidence\": \"ChIP, conditioned-media assays, signaling blockades and knockout/knockdown across multiple cell systems\",\n      \"pmids\": [\"23900840\", \"23861379\", \"20041157\", \"23603388\", \"23954891\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Each axis from a single lab\", \"Cross-talk and hierarchy among these regulators not integrated\"]\n    },\n    {\n      \"year\": 2016,\n      \"claim\": \"Validated WNT10B as a Mendelian disease gene, linking loss-of-canonical-signaling mutations to oligodontia.\",\n      \"evidence\": \"Patient mutation sequencing with TOPFlash reporter and dental pulp stem cell differentiation assays\",\n      \"pmids\": [\"27321946\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Genotype-phenotype correlation across mutation types not resolved\", \"Developmental cell target in tooth formation undefined\"]\n    },\n    {\n      \"year\": 2017,\n      \"claim\": \"Showed WNT10B is delivered via exosomes for paracrine and autocrine signaling, enabling EMT-driven cancer progression and mTOR-dependent axonal regeneration.\",\n      \"evidence\": \"Exosome isolation, lipid raft fractionation, co-culture and Wnt10b knockout in an optic nerve injury model\",\n      \"pmids\": [\"28394344\", \"28683327\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"Exosomal loading/sorting mechanism unknown\", \"Receptor engagement on recipient cells not defined\"]\n    },\n    {\n      \"year\": 2018,\n      \"claim\": \"Defined the upstream transcriptional logic of T-cell WNT10B (butyrate\\u2192Treg\\u2192NFAT1-SMAD3) and a \\u03b2-CATENIN/HMGA2/EZH2 autoregulatory loop sustaining chemoresistant cancer.\",\n      \"evidence\": \"Germ-free/Treg-depleted mice, Wnt10b-/- CD8+ T-cell reconstitution, ChIP, Co-IP and PDX models\",\n      \"pmids\": [\"30446387\", \"30563890\"],\n      \"confidence\": \"High\",\n      \"gaps\": [\"K49 acetylation regulation single-lab\", \"Translation of microbiota axis to humans not established here\"]\n    },\n    {\n      \"year\": 2020,\n      \"claim\": \"Revealed a \\u03b2-catenin-independent role: WNT10B uses Wnt/STOP through LRP6-DVL-GSK3\\u03b2 to safeguard mitotic spindle dynamics and prevent aneuploidy.\",\n      \"evidence\": \"Wnt10b loss-of-function in human somatic cells with live-cell imaging of mitosis and microtubule dynamics\",\n      \"pmids\": [\"33257473\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"GSK3\\u03b2 substrates mediating microtubule effect not defined\", \"Single lab\"]\n    },\n    {\n      \"year\": 2022,\n      \"claim\": \"Consolidated epigenetic control of the Wnt10b locus, adding BMI1-H2AK119ub repression in stem cell maintenance alongside NSD1 and MAT2A-EZH2 mechanisms.\",\n      \"evidence\": \"BMI1 knockout mice with histone-mark ChIP and \\u03b2-catenin-inhibition rescue in spermatogonial stem cells\",\n      \"pmids\": [\"35541907\", \"31727171\", \"29133280\"],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"How distinct chromatin writers are coordinated at the locus is unknown\", \"Tissue specificity of each mechanism unclear\"]\n    },\n    {\n      \"year\": null,\n      \"claim\": \"The receptor/co-receptor complex through which WNT10B engages target cells, and how a single ligand partitions between canonical \\u03b2-catenin, Wnt/STOP, and RAC1 outputs in a given cell, remain undefined.\",\n      \"evidence\": \"\",\n      \"pmids\": [],\n      \"confidence\": \"Medium\",\n      \"gaps\": [\"No defined Frizzled receptor for WNT10B in the corpus\", \"Mechanism selecting among parallel pathways not established\", \"Structural basis of ligand-receptor engagement absent\"]\n    }\n  ],\n  \"mechanism_profile\": {\n    \"molecular_activity\": [\n      {\"term_id\": \"GO:0048018\", \"supporting_discovery_ids\": [0, 2, 3, 35]},\n      {\"term_id\": \"GO:0060089\", \"supporting_discovery_ids\": [15, 16, 19]}\n    ],\n    \"localization\": [\n      {\"term_id\": \"GO:0005576\", \"supporting_discovery_ids\": [3, 7, 11, 35]},\n      {\"term_id\": \"GO:0031410\", \"supporting_discovery_ids\": [11, 12]},\n      {\"term_id\": \"GO:0005929\", \"supporting_discovery_ids\": [23]}\n    ],\n    \"pathway\": [\n      {\"term_id\": \"R-HSA-162582\", \"supporting_discovery_ids\": [0, 2, 16, 27]},\n      {\"term_id\": \"R-HSA-1266738\", \"supporting_discovery_ids\": [0, 1, 14, 31]},\n      {\"term_id\": \"R-HSA-74160\", \"supporting_discovery_ids\": [5, 6, 18, 22]},\n      {\"term_id\": \"R-HSA-1643685\", \"supporting_discovery_ids\": [5, 6, 29, 30]}\n    ],\n    \"complexes\": [],\n    \"partners\": [\"CTNNB1\", \"RAC1\", \"LRP6\", \"GSK3B\"],\n    \"other_free_text\": []\n  }\n}","audit_flag":null,"evaluation":{"pairwise":"win","faith_supported":7,"faith_total":7,"faith_pct":100.0}}