互惠的迪斯科丁域受体信号强化整合素粘附,连接相邻的组织
Kieop Park1, Ranjay Jayadev1, Sara G Payne1,2
1Department of Biology, Duke University, Durham, United States.
eLife
|July 5, 2023
概括
第四类原蛋白同步组织之间的细胞粘附. 这种原激活迪斯科丁域受体-2 (DDR-2),加强连接,在发育和功能过程中提供强大的组织支持.
科学领域:
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 组织通过底层膜连接,需要强大而平衡的细胞粘附来实现功能和稳定性.
- 细胞实现同步粘附以连接组织的机制在很大程度上是未知的.
研究的目的:
- 调查在 *Caenorhabditis elegans* utse-seam 组织连接中的同步细胞粘附的基础分子机制.
- 确定细胞如何协调粘附以确保稳定的组织连接,特别是在产卵期间.
主要方法:
- 利用了遗传学,定量光显微镜和细胞特异性的分子破坏 *Caenorhabditis elegans*.
- 采用RNAi枯竭,基因组编辑和光漂白实验来分析蛋白质功能和信号通路.
主要成果:
- 第四类原蛋白,定了 utse-seam 连接,在两种细胞类型中激活了 discoidin 域受体-2 (DDR-2).
- 通过 LET-60/Ras 的 DDR-2 信号,协调地加强了 utse 和接细胞的整合因介导粘附.
- 这种由原介导的信号传递确保了同步和强大的粘附,稳定了组织连接.
结论:
- 发现了一种新的同步机制,用于在组织连接期间强大的细胞粘附.
- 第四类原蛋白具有双重作用:物理连接组织,并通过DDR-2发出信号,以增强两种连接组织的粘附性.
- 这种机制对于维护组织完整性和功能至关重要,以支持产卵的utse-seam连接为例.
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