通过α5β1整蛋白参与集体细胞迁移来调节线粒体膜潜力的空间调节
Gustavo G Pacheco1, Bette J Dzamba1, Wakako Endo1
1Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA.
Journal of cell science
|April 14, 2025
概括
机械力量在胚胎迁移期间促进细胞能量生产. 线粒体膜潜能增加和呼吸效率增加与纤维素-整蛋白信号传递有关,影响细胞运动.
科学领域:
- 细胞生物学 细胞生物学
- 发展生物学 发展生物学
- 生物物理学的生物物理.
背景情况:
- 机械力和细胞能量代谢之间的相互作用尚未得到充分理解.
- 细胞迁移对于胚胎发育至关重要,并依赖于细胞矩阵相互作用.
研究的目的:
- 研究机械力,细胞外矩阵 (ECM) 相互作用和迁移胚胎细胞中的生物能量之间的机制联系.
- 探索纤维素-整合素信号传导在集体细胞迁移期间调节线粒体活动中的作用.
主要方法:
- 使用的Xenopus laevis间皮细胞正在进行集体迁移.
- 测量了线粒体膜潜力 (MMP) 和实时代谢活性.
- 采用不同亲和度状态和可变形基质的纤维菌素基质.
- 研究了焦粘附激酶 (FAK) 信号和整合素参与的作用.
主要成果:
- 在迁移的细胞中观察到MMP和呼吸效率的增加,这些细胞位于基质引应力较高的位置.
- FAK抑制降低了新陈代谢活动.
- 特定的纤维内素协同部位 (RGD和PPSRN) 参与和细胞伸展以FAK依赖的方式增加了MMP.
- 抑制MMP或ATP合成酶活动会影响集体细胞迁移速度.
结论:
- 综合素依赖于纤维素的粘附和相关的信号通路显著影响细胞代谢活动.
- 纤维素-整合素相互作用在塑造集体迁移胚胎细胞的生物能景观方面发挥着关键作用.
- 这项研究揭示了在发育过程中ECM-整蛋白粘附和代谢调节之间的新鲜联系.
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