ArticleStem cell research & therapy2026
Dental pulp stem cells maintain epigenetic chromatin architecture remodeling primed by the etiological stimulus of biliary atresia.
Article in Stem cell research & therapy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Characterization of stem cells from exfoliated deciduous teeth from a patient with Alagille syndrome carrying a JAG1 mutation.Pediatric surgery international · 2026Article
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Abstract
backgroundBiliary atresia (BA) is a nongenetic cholangiopathy characterized by biliary obliteration. However, the underlying pathological mechanism remains unclear. We aimed to explore the epigenetic BA pathology by using BA-specific deciduous dental pulp stem cells (BA-SHED), which develop in parallel with cholangiocyte progenitor cells in human embryos.
methodsBA-SHED were isolated from human exfoliated deciduous teeth of patients with BA using the colony-forming unit fibroblast method. After sequential stimulation with cytokines and chemicals in cultured BA-SHED, the in vitro bile duct-forming capacity was analyzed using quantitative reverse transcription polymerase chain reaction (RT-qPCR) and immunofluorescence. Expression of hepatocyte nuclear factor 6 (HNF6) and transforming growth factor beta receptor 2 (TGFBR2) was analyzed using immunoblotting and RT-qPCR. The regulation of chromatin architecture at the HNF6 promoter was analyzed using nuclease-accessible chromatin-qPCR and chromatin immunoprecipitation-qPCR.
resultsBA-SHED showed an inheritable increase in HNF6 levels, resulting in TGFBR2 suppression and deficiency in bile duct formation. BA-SHED also accumulated Brahma and P65 complexes around the HNF6 promoter with chromatin architecture remodeling. Tumor necrosis factor-alpha and interferon-gamma co-stimulation mimicked the epigenetic signatures of BA-SHED.
conclusionThe present epigenetic memory in BA-SHED implies that BA-SHED imprint bile duct deficiency through TGFBR2 dysregulated by the HNF6 promoter activation epigenetically. Thus, BA-SHED are a potential model for expanding our knowledge in BA research.
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