在PI3K信号传递中介的肠道神经系统发育中,EMB是必不可少的
Zhi Li1,2, Didi Zhuansun1,2, Xinyao Meng1,2
1Department of Pediatric Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China.
Genome medicine
|September 26, 2025
概括
EMB对于肠道神经系统的发育至关重要,调节肠道神经细胞的增殖和迁移. 它的功能障碍可能会导致Hirschsprung.
科学领域:
- 发育生物学是发展生物学.
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
背景情况:
- 肠道神经系统 (ENS) 来自肠道神经细胞 (ENCCs),控制胃肠道功能.
- 肠神经系统的发育缺陷可能导致诸如赫施普朗格病 (HSCR) 这样的疾病.
- 电磁波被认为是ENS发展的保守调节器.
研究的目的:
- 研究EMB在肠道神经系统发育中的作用.
- 探索EMB影响ENCCs的分子机制.
- 评估EMB变体对HSCR的潜在贡献.
主要方法:
- 通过scRNA-seq和免疫光检查人类和小鼠肠道中的EMB表达.
- 生成并分析了Emb-knockout斑马鱼和小鼠模型.
- 研究ENCC的扩散和迁移,使用探索性肠道和有机体培养;评估HSCR患者的罕见EMB变异.
主要成果:
- 斑马鱼和小鼠的EMB损失导致肠道神经元减少,肠道运输受损,和HSCR类型的表型.
- 电磁波对ENCC的扩散和迁移都至关重要.
- EMB将PP2A引入细胞膜,激活PI3K-AKT通路并促进ENCC的发展;PI3K/AKT激动剂部分挽救了缺陷.
结论:
- 电磁波是ENS发展不可或缺的,控制ENCC的扩散和迁移.
- EMB 通过将 PP2A 引入细胞膜而起作用,从而促进 PI3K 信号传递.
- 罕见的EMB变异可能在HSCR的发病过程中发挥作用.
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