2024年11月22日,上海交通大学基础医学院王琼研究团队等在Nature Communications上发表了题为“A stepwise mode of TGFβ-SMAD signaling and DNA methylation regulates naïve-to-primed pluripotency and differentiation”的...2024年11月22日,上海交通大学基础医学院王琼研究团队等在Nature Communications上发表了题为“A stepwise mode of TGFβ-SMAD signaling and DNA methylation regulates naïve-to-primed pluripotency and differentiation”的研究成果。该研究提出了一种胚胎干细胞在原始态-始发态-分化过程中的分步调控模型,揭示了Smad2/3通过依赖与非依赖Smad4两种方式调控干细胞的精细机制,并首次发现Dnmt3b是磷酸化的Smad2/3的新型互作因子,共同决定干细胞的命运。此外,该研究还阐明了TGFβ-Smad信号通路与DNA甲基化等表观遗传修饰协同调控小鼠胚胎植入的发育机制,为转录调控与表观遗传互作的协同调控提供了新的研究范式。展开更多
[Objectives]To investigate the anti-hepatic fibrosis mechanism of lavandulyl flavonoid Kurarinol A(KA)from Sophora flavescens through the TGF/Smad signaling pathway.[Methods]A hepatic fibrosis model was established by...[Objectives]To investigate the anti-hepatic fibrosis mechanism of lavandulyl flavonoid Kurarinol A(KA)from Sophora flavescens through the TGF/Smad signaling pathway.[Methods]A hepatic fibrosis model was established by TGF-β1-induced activation of human hepatic stellate cells LX-2.Western blot and RT-qPCR techniques were employed to study the anti-fibrotic mechanism of KA through the TGF/Smad signaling pathway.[Results]KA exerted anti-hepatic fibrosis effects by significantly reducing the gene expression levels of TGF-β1,Smad2,Smad3,and Smad4,as well as markedly decreasing the protein expression levels of TGF-β1,p-Smad2/3/Smad2/3,and Smad4.[Conclusions]KA demonstrates significant anti-hepatic fibrosis activity and alleviates liver fibrosis through the TGF/Smad signaling pathway.展开更多
文摘2024年11月22日,上海交通大学基础医学院王琼研究团队等在Nature Communications上发表了题为“A stepwise mode of TGFβ-SMAD signaling and DNA methylation regulates naïve-to-primed pluripotency and differentiation”的研究成果。该研究提出了一种胚胎干细胞在原始态-始发态-分化过程中的分步调控模型,揭示了Smad2/3通过依赖与非依赖Smad4两种方式调控干细胞的精细机制,并首次发现Dnmt3b是磷酸化的Smad2/3的新型互作因子,共同决定干细胞的命运。此外,该研究还阐明了TGFβ-Smad信号通路与DNA甲基化等表观遗传修饰协同调控小鼠胚胎植入的发育机制,为转录调控与表观遗传互作的协同调控提供了新的研究范式。
基金Supported by Guizhou Provincial Science and Technology Project(2024-023ZK2024-047,2024-015)+3 种基金the Innovation and Entrepreneurship Training Program for Undergraduates from China(202310660082,S2024106601432X)University Engineering Research Center for the Prevention and Treatment of Chronic Diseases by Authentic Medicinal Materials in Guizhou Province(2023-035)Administration of Traditional Chinese Medicine of Guizhou Province(QZYY-2024-134)Science Foundation of the Health Commission of Guizhou Province(gzwkj2025-538).
文摘[Objectives]To investigate the anti-hepatic fibrosis mechanism of lavandulyl flavonoid Kurarinol A(KA)from Sophora flavescens through the TGF/Smad signaling pathway.[Methods]A hepatic fibrosis model was established by TGF-β1-induced activation of human hepatic stellate cells LX-2.Western blot and RT-qPCR techniques were employed to study the anti-fibrotic mechanism of KA through the TGF/Smad signaling pathway.[Results]KA exerted anti-hepatic fibrosis effects by significantly reducing the gene expression levels of TGF-β1,Smad2,Smad3,and Smad4,as well as markedly decreasing the protein expression levels of TGF-β1,p-Smad2/3/Smad2/3,and Smad4.[Conclusions]KA demonstrates significant anti-hepatic fibrosis activity and alleviates liver fibrosis through the TGF/Smad signaling pathway.
