中介细胞通过RET-GFRA1b跨信号调节肠神经细胞迁移
Mari Morikawa1, Hisayoshi Yoshizaki2, Yoshitomo Yasui2
1Department of Pediatrics, Kanazawa Medical University, Ishikawa 920-0293, Japan.
Biochemical and biophysical research communications
|April 6, 2024
概括
肠介质细胞中的蛋白质GFRA1b促进肠神经细胞迁移,这对肠道神经系统发育至关重要. 这种信号通路是形成肠道神经系统的关键.
科学领域:
- 发展生物学 发展生物学
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
背景情况:
- 肠道神经系统 (ENS) 由通过肠道迁移的肠道神经细胞 (ENCC) 发展起来的.
- 肠介质细胞 (EMC) 与ENCC相互作用,影响它们的增殖和分化.
- GFRA1与ENS发育有关,但其特定的异构体和细胞通信中的作用需要澄清.
研究的目的:
- 调查EMC表达的GFRA1b在与ENCC沟通中介的作用.
- 确定GFRA1异型如何影响ENCC迁移和神经细胞外生.
- 阐明了GFRA1b介导的ENCC运动的基础信号机制.
主要方法:
- 在胚胎小鼠后肠中分析GFRA1表达模式.
- 在实验室中使用ENCC和GFRA1表达细胞进行神经圈滴滴试验.
- 与ENCC模拟和EMC模拟细胞进行共同培养实验,以评估RET信号.
主要成果:
- 高GFRA1表达,特别是GFRA1b,在后肠的抗介质侧观察到,与ENCC迁移相关.
- 表达GFRA1b的细胞促进了GDNF依赖的神经元扩展和增加ENCC神经圈中的密度.
- 在GDNF刺激后,GFRA1b在ENCC模拟细胞中持续酸化RET,与GFRA1a不同.
结论:
- GFRA1b介导的细胞间通信对于ENCC迁移和ENS发育至关重要.
- 通过持续的RET激活,GFRA1b信号影响ENCC运动.
- 这些发现提供了对ENS形成和胃肠道疾病潜在治疗点的见解.
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