一个ULK1/2-PXN机械传导途径抑制了乳腺癌细胞迁移
Peigang Liang1, Jiaqi Zhang1, Yuchen Wu1
1State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, China.
EMBO reports
|October 17, 2023
概括
自诱导激酶ULK1/2通过控制机械转导来调节乳腺癌细胞迁移. ULK1/2可酸化帕克西林,破坏焦点粘附并改变细胞对机械线索的反应.
科学领域:
- 细胞生物学 细胞生物学
- 癌症生物学 癌症生物学
- 机械生物学 机械生物学
背景情况:
- 细胞外基质 (ECM) 的重塑和硬化影响乳腺癌的进展.
- 如何将ECM的机械特性转化为瘤细胞迁移的生化信号的机制尚未完全理解.
研究的目的:
- 调查自诱导的胺/氨酸激酶ULK1和ULK2在机械传导中的作用.
- 阐明ULK1/2活性如何影响乳腺癌细胞迁移和焦点粘附动态.
主要方法:
- 研究了ULK1/2在乳腺癌细胞中的活性.
- 评估ULK1/2对actin应力纤维和焦点粘附 (FA) 的影响.
- 确定和描述ULK1/2和PXN/paxillin之间的相互作用.
主要成果:
- ULK1/2活性抑制了actin应激纤维和FA组合,减少细胞收缩和迁移,独立于自.
- PXN/paxillin 是ULK1/2.2. 的直接结合伙伴和基质.
- 在S32和S119处通过ULK1/2介导的PXN酸化会损害FA组合,并改变乳腺癌细胞的机理敏感性.
- ULK1/2和FAK/Src在机械转导中表现出对立的作用,在PXN酸化中竞争.
结论:
- 在乳腺癌中,ULK1/2作为机械转导的新型调节剂.
- ULK1/2通过调节PXN依赖的焦点粘附动态来控制细胞迁移.
- 这项研究揭示了细胞如何对机械刺激做出反应的新层调节,影响了癌症的进展.
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