Y盒结合蛋白1促进染色质的可访问性,使肝纤维化恶化
Zihui Tang1, Bowen Lin2, Wei Li3
1Department of Gastroenterology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200092, China.
Cellular signalling
|June 8, 2023
概括
Y盒结合蛋白1 (YBX1) 通过增加染色质可访问性和激活纤维生成基因,加剧肝纤维化. 减少YBX1的表达改善了肝纤维化,确定YBX1是肝纤维化发展的关键因素.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- Y盒结合蛋白1 (YBX1) 调节炎症,氧化应激和上皮细胞-介质细胞过渡.
- 在肝纤维化中YBX1的特定作用仍然在很大程度上是未知的.
研究的目的:
- 研究YBX1在肝纤维化发展中的作用和机制.
- 为了确定肝纤维化的潜在治疗点.
主要方法:
- 在人类和小鼠肝纤维化模型中分析YBX1表达.
- 在体内和体外使用肝脏特异性Ybx1过度表达和淘汰的研究.
- 用高吞吐量测序 (ATAC-seq) 检测转化酶可访问的染色质,以评估染色质的可访问性.
- 候选目标基因的验证.
主要成果:
- 在多重肝纤维化模型中,YBX1的表达被上调.
- 过度表达YBX1会加剧肝纤维化,而YBX1倒置会改善纤维化.
- YBX1增加了染色质的可访问性,特别是在与细胞外矩阵积累,脂质代谢和炎症相关的基因中.
- 一些候选基因 (Fyn, Axl, Acsl1, Plin2, Angptl3, Pdgfb, Ccl24, Arg2) 被确定为潜在的YBX1目标.
结论:
- YBX1通过调节染色质可访问性和基因表达,在促进肝纤维化方面发挥着关键作用.
- YBX1是治疗肝纤维化的潜在治疗标.
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