CUG-binding protein 1 regulates HSC activation and liver fibrogenesis.

CUG-binding protein 1 regulates HSC activation and liver fibrogenesis.
复制标题

CUG 结合蛋白 1 调节 HSC 激活和肝纤维形成。

DOI:
10.1038/ncomms13498
复制
发表时间:
2016-11-17
影响因子:
16.6
通讯作者:
Xu Q
Xu Q
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Wu X;Wu X;Ma Y;Shao F;Tan Y;Tan T;Gu L;Zhou Y;Sun B;Sun Y;Wu X;Xu Q

文献摘要

参考文献

被引文献

相似文献

肝星状细胞(HSC)的过度激活是肝纤维化发生的关键步骤。在这里,我们报告说,CUG结合蛋白1(CUGBP 1)的表达升高,在HSC和肝纤维化的严重程度呈正相关,在人类肝活检。转化生长因子-β(TGF-β)以p38丝裂原活化蛋白激酶(MAPK)依赖性方式选择性增加培养的HSC中CUGBP 1的表达。在体外HSC中,CUGBP 1的敲低抑制α平滑肌肌动蛋白(α-SMA)表达并促进干扰素γ(IFN-γ)产生。我们进一步表明CUGBP 1特异性结合人IFN-γ mRNA的3′非翻译区(UTR)并促进其降解。在小鼠中,CUGBP 1的敲低会加重胆管结扎(BDL)诱导的肝纤维化,而其过表达会加重肝纤维化。因此,CUGBP 1介导的IFN-γ mRNA衰减是HSC的促纤维化TGF-β依赖性活化的关键事件,并且抑制CUGBP 1以促进活化的HSC中的IFN-γ信号传导可能是治疗肝纤维化的新策略。
Excessive activation of hepatic stellate cells (HSCs) is a key step in liver fibrogenesis. Here we report that CUG-binding protein 1 (CUGBP1) expression is elevated in HSCs and positively correlates with liver fibrosis severity in human liver biopsies. Transforming growth factor-beta (TGF-β) selectively increases CUGBP1 expression in cultured HSCs in a p38 mitogen-activated protein kinase (MAPK)-dependent manner. Knockdown of CUGBP1 inhibits alpha smooth muscle actin (α-SMA) expression and promotes interferon gamma (IFN-γ) production in HSCsin vitro. We further show that CUGBP1 specifically binds to the 3′ untranslated region (UTR) of human IFN-γ mRNA and promotes its decay. In mice, knockdown of CUGBP1 alleviates, whereas its overexpression exacerbates, bile duct ligation (BDL)-induced hepatic fibrosis. Therefore, CUGBP1-mediated IFN-γ mRNA decay is a key event for profibrotic TGF-β-dependent activation of HSCs, and inhibiting CUGBP1 to promote IFN-γ signalling in activated HSCs could be a novel strategy to treat liver fibrosis.
DOI: 10.1016/s0168-8278(02)00050-8
发表时间: 2002-05-01
影响因子: 25.7
作者:
Kobold, D;Grundmann, A;Knittel, T
通讯作者: Knittel, T
DOI: 10.1038/ncomms5451
发表时间: 2014-07-21
影响因子: 16.6
作者:
Lopez-Sanchez, Inmaculada;Lopez-Sanchez, Inmaculada;Dunkel, Ying;Roh, Yoon-Seok;Mittal, Yash;De Minicis, Samuele;Muranyi, Andrea;Singh, Shalini;Shanmugam, Kandavel;Aroonsakool, Nakon;Murray, Fiona;Ho, Samuel B.;Seki, Ekihiro;Brenner, David A.;Ghosh, Pradipta
通讯作者: Ghosh, Pradipta
DOI: 10.1093/hmg/ddi162
发表时间: 2005-06-01
影响因子: 3.5
作者:
Ho, TH;Bundman, D;Cooper, TA
通讯作者: Cooper, TA
DOI: 10.1038/nrgastro.2013.244
发表时间: 2014-02-01
期刊: Nature reviews. Gastroenterology & hepatology
影响因子: --
作者:
Ray, Katrina
通讯作者: Ray, Katrina
DOI: 10.1053/gast.1996.v110.pm8536857
发表时间: 1996-01-01
期刊: GASTROENTEROLOGY
影响因子: 29.4
作者:
Gartung, C;Ananthanarayanan, M;Boyer, JL
通讯作者: Boyer, JL