在心脏膜发育过程中,Manic Fringe促进由Notch信号通路介导的内皮细胞到介质细胞的过渡
Junjie Yang1,2, Zhi Wang2, Yue Zhou2
1Department of Pediatric Cardiology, The Second Affiliated Hospital, Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.
概括
躁狂边缘 (MFNG) 通过通过Notch信号来增强内皮到介质细胞过渡 (EndMT) 来促进心脏膜发育. 在MFNG中发生的突变会破坏这个过程,导致先天性心脏缺陷.
科学领域:
- 发展生物学 发展生物学
- 心血管研究研究心血管研究
- 分子遗传学 分子遗传学
背景情况:
- 内皮转介质过渡 (EndMT) 对于心脏膜形成至关重要.
- 异常的EndMT导致先天性膜形.
- 躁狂边缘 (MFNG) 在心脏膜发育和EndMT中的作用在很大程度上是未知的.
研究的目的:
- 研究MFNG在心脏膜发育中的作用.
- 阐明MFNG与EndMT过程的关联.
- 探索MFNG在心脏膜形成中的功能背后的分子机制.
主要方法:
- 组织学染色以检测小鼠心脏发育中的MFNG表达.
- 斑马鱼的淘汰模型使用反意义的形态分子寡核酸 (MO).
- 在患有先天性心脏缺陷的患者中进行全外体测序 (WES).
- 细胞和分子测试以评估MFNG功能和Notch信号活动.
主要成果:
- 在EndMT.期间,MFNG在心房道 (AVC) 和外流通道 (OFT) 中表达.
- 通过Notch信号传递,MFNG通过增强内皮细胞迁移来积极调节EndMT.
- 斑马鱼中MFNG的淘汰导致心脏和门的异常发育.
- 在患有Fallot-肺狭窄症 (TOF-PS) 四重症的患者中发现了一种异构的MFNG突变 (p.T77M).
- 这种突变减少了MFNG的表达,并通过降低Notch信号调节来损害EndMT.
结论:
- 通过通过Notch信号通路促进EndMT,MFNG对心脏膜发育至关重要.
- 一种有害的MFNG突变导致功能丧失,导致先天性心脏膜缺陷.
- MFNG可以作为先天性心脏膜疾病的潜在诊断标记物和治疗标.
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