在Xenopus神经激发过程中,内源性ADIP的平面极化
bioRxiv : the preprint server for biology
|February 6, 2026
概括
在胚胎发育过程中,阿法丁和α-actinin结合蛋白 (ADIP) 根据机械力而重组和极化. 这种机械敏感蛋白对于组织形态发生和集体细胞行为至关重要.
科学领域:
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
背景情况:
- 协调的细胞极性和强力响应蛋白质局部化对于组织形态发生至关重要.
- 胚胎细胞感知力和响应机械线索的机制尚未完全理解.
- 阿法丁和α-actinin结合蛋白 (ADIP) 参与微管组织和集体细胞迁移.
研究的目的:
- 研究胚胎发育早期内源性ADIP的分布和调节.
- 确定ADIP在机械感应和平面细胞极性 (PCP) 中的作用.
- 为了阐明ADIP两极化背后的细胞骨机制.
主要方法:
- 在Xenopus胚胎中ADIP分布的免疫光显微镜.
- 在上皮层伤口修复和神经管关闭过程中分析ADIP两极化.
- 基因操纵 (Diversin/Ankrd6耗尽) 和药理学破坏 (微管,F-actin,非肌肉肌肉蛋白II).
主要成果:
- 内源性ADIP最初是随机分布的,但在上皮层伤口修复过程中偏离.
- 在前神经板中,ADIP极化,这表明神经管关闭期间由机械力调节.
- ADIP的两极分化取决于PCP组成部分Diversin/Ankrd6和细胞骨网络 (微管,actomyosin).
结论:
- 内生ADIP在脊椎动物胚胎发育中充当机械敏感蛋白.
- ADIP的局部化和极化是由细胞骨动力学和机械线索调节的.
- 在形态发生过程中,ADIP在通过PCP控制集体细胞行为方面发挥着上下文依赖的作用.
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