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稳定和振荡性缺氧差异调节乳腺癌相关纤维细胞的侵入性
Wenqiang Du1, Ashkan Novin1, Yamin Liu1
1Department of Biomedical Engineering, University of Connecticut Health, Farmington, CT, USA.
Mechanobiology in medicine
|May 14, 2025
概括
低氧,一种低氧状态,改变了与癌症相关的纤维细胞 (CAF). 振荡性缺氧独特地增强了CAF的侵入性和力量生成,促进了癌症转移.
科学领域:
- 癌症生物学 癌症生物学
- 细胞微环境 细胞微环境
- 瘤缺氧 瘤缺氧
背景情况:
- 瘤缺氧会影响癌细胞和瘤微环境,包括与癌症相关的纤维细胞 (CAF).
- 缺氧可以稳定或波动,影响细胞反应.
- 缺氧诱导因子-1 (HIF-1) 调节细胞对缺氧的反应,并且可以表现出振荡.
研究的目的:
- 研究稳定和振荡性缺氧对乳腺CAFs的影响.
- 在不同的氧气条件下评估基因表达和CAF功能的变化.
- 为了确定缺氧如何影响CAF介导的乳腺癌入侵.
主要方法:
- 在normoxia,稳定缺氧和振荡性缺氧下对CAF的基因表达分析.
- 拉力力显微镜测量CAF收缩力.
- 纳米模式的树皮侵入试验来评估CAF的入侵性.
主要成果:
- 缺氧激活了关键的纤维细胞激活通路,但减少了肌纤维细胞激活和引力.
- 振荡性缺氧会诱导一种"亚缺氧"基因表达特征,具有特定的作用因子聚合和作用因子成熟的途径.
- 振荡性缺氧增加CAF收缩力生成,反应异质性,并增强MDA-MB-231细胞入侵.
结论:
- 稳定和振荡性缺氧显著改变CAF的机械生物学特征.
- 缺氧可以改变CAF,促进它们在癌症传播和转移中的作用.
- 了解缺氧在CAF调节中的作用对于开发抗癌疗法至关重要.
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