在C. elegans肌肉中,Wnt-Ror-Dvl信号传递和基复合物组织平面偏振的膜区
Alice Peysson1, Noura Zariohi1, Marie Gendrel2
1Université Claude Bernard Lyon 1, CNRS UMR 5284, INSERM U1314, MeLiS, Lyon, 69008, France.
Nature communications
|June 10, 2024
概括
科学家们在C. elegans肌肉细胞中发现了不同的膜区,由一种新的Wnt信号通路控制. 这种肌肉极性需要持续的DSH-1/Dishevelled,显示出动态的细胞组织.
科学领域:
- 细胞生物学 细胞生物学
- 发展生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 细胞极性建立了专门的膜领域,这对细胞功能至关重要.
- 了解这些领域是解读复杂细胞过程的关键.
- C. elegans 肌肉细胞表面作为研究膜组织的模型.
研究的目的:
- 在C. elegans肌肉细胞中识别和描述不同的膜区.
- 阐明控制肌肉细胞极性性的分子机制.
- 研究肌肉发育过程中肌肉极性的动态性.
主要方法:
- 对通道和与消毒素相关的蛋白质进行局部分析.
- 研究一个非正规的Wnt信号级联 (EGL-20/Wnt,CAM-1/Ror,DSH-1/Dishevelled).
- 时间解析的蛋白质降解,以评估极性动态.
主要成果:
- 在C. elegans肌肉细胞表面上存在明显的平面偏振膜区.
- 肌肉极性由EGL-20/Wnt,CAM-1/Ror和DSH-1/Dishevelled调节,独立于经典的平面细胞极性蛋白.
- 肌肉极性是通过胚胎生成建立的,但需要持续的DSH-1/Dishevelled来维持.
结论:
- C. elegans 肌肉细胞表现出复杂的,细分的膜组织.
- 一个非正规的Wnt通路控制肌肉极性,突出显示新的信号传递机制.
- 肌肉极性是一个动态的过程,需要持续的DSH-1/Dishevelled活动,为研究细胞极性 in vivo提供了一个模型.
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