基质粘附和脱附的机械调节在Drosophila组织形态发生过程中驱动细胞收缩波
Claudio Collinet1, Anaïs Bailles1, Benoit Dehapiot1
1Aix Marseille Université & CNRS, IBDM - UMR7288 & Turing Centre for Living Systems, Campus de Luminy Case 907, 13288 Marseille, France.
Developmental cell
|December 16, 2023
概括
在发育过程中,组织的阴道化是由细胞收缩性和粘附性驱动的. 这项研究揭示了细胞层面的机械力和反循环是如何协调组织规模变形的.
科学领域:
- 发展生物学 发展生物学
- 细胞力学 细胞力学
- 生物物理学的生物物理.
背景情况:
- 形态发生涉及由机械力驱动的大规模组织变形.
- 将细胞收缩和粘附与这些力量联系在一起的确切机制尚不清楚.
- 德罗斯菲拉胚胎表现出两极化的组织发育,这是由actomyosin收缩性和维他林膜粘附驱动的.
研究的目的:
- 阐明细胞下机制,通过这些机制,机械力量在形态发生过程中从细胞收缩和粘附中产生.
- 为了研究肌肉蛋白II激活和粘附于维他林膜之间的机械合的作用.
- 了解反机制如何影响组织发育动态.
主要方法:
- 在Drosophila胚胎形态发生过程中研究了亚细胞过程.
- 分析了肌蛋白II激活,整蛋白聚类和维他林膜粘附之间的相互作用.
- 研究了粘附强度和接触时间对细胞脱离和波传播的影响.
主要成果:
- 组织浸是由于myosin II激活和顺序的粘附/脱附到小膜之间的亚细胞机械合而产生的.
- 波面上的整合素集群定了动蛋白皮质,激活了myosin II,并为粘附创造了一个积极的反循环.
- 细胞脱离角度,受粘附强度的影响,决定了拉力,而长时间的小膜接触会减缓波浪的传播.
结论:
- 亚细胞机械化学反和几何约束之间的相互作用驱动组织形态发生.
- 集成因介导的粘附性和肌酸二驱动的收缩性形成了一个关键的反循环,调节阴道化.
- 了解这些细胞动态,可以深入了解发育过程和组织形成.
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