在乳腺癌细胞中的差异性AXL表达和Arf1调控控制度依赖的戈尔吉组织
Arnav Saha1, Tushar Sherkhane1, Nagaraj Balasubramanian1
1IISER Pune, Dr. Homi Bhabha Road, Pune 411008, India.
Journal of cell science
|February 3, 2026
概括
乳腺癌细胞感觉到矩阵的刚性,通过AXL-Arf1通路改变戈尔吉组织. 这种机械敏感信号影响细胞存活和糖化,提供新的治疗点.
科学领域:
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
- 癌症研究 癌症研究
背景情况:
- 集成因介导的粘附和机械传导对于细胞功能,包括生存至关重要.
- 矩阵硬化与乳腺瘤的进展有关,影响细胞骨组织.
- 矩阵刚度对器官组织和功能的影响,特别是戈尔吉装置,在癌症中仍然基本未被探索.
研究的目的:
- 调查Golgi组织和功能是如何通过母体刚度感应在乳腺癌细胞中调节的.
- 确定参与这种机械敏感过程的分子机制和信号通路.
- 探索受体氨酸激酶AXL在戈尔吉组织中对矩阵刚性的反应中的作用.
主要方法:
- 使用MDA-MB-231和MCF7乳腺癌细胞系培养在不同硬度的矩阵上.
- 评估了戈尔吉组织,蛋白乙化,以及AXL和Arf1表达水平.
- 在MCF7细胞中使用AXL抑制/敲击和稳定的AXL表达来确定AXL的作用.
- 研究了Arf1的激活和定位及其对戈尔吉组织和糖化酶的影响.
主要成果:
- 在MDA-MB-231细胞中,戈尔吉组织和氨酸乙化随着矩阵刚度的增加而增加,这表明了依赖于刚度的调节.
- 不管矩阵刚度如何,MCF7细胞都表现出一个无组织的戈尔吉细胞.
- AXL受体氨酸激酶定位在戈尔吉细胞中,对MDA-MB-231细胞的硬度依赖的戈尔吉组织至关重要.
- AXL和Arf1的表达和激活由矩阵刚度上调,控制戈尔吉组织.
- 抑制AXL或Arf1破坏了戈尔吉组织,蛋白乙化和细胞表面糖化.
结论:
- 一个涉及AXL和Arf1的新型机械响应信号轴调节乳腺癌细胞中的戈尔吉组织和功能.
- 这个AXL-Arf1-Golgi通路集成了矩阵刚度传感器来调节细胞过程.
- 这些发现凸显了针对乳腺癌治疗干预这一途径的潜力.
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