单细胞在循环机械负荷下的动态弹性评估揭示了化疗诱导的细胞骨微损伤
Shanshan Li1,2, Chundong Xue1,3, Siyu Hu2
1Institute of Oncology, Cancer Hospital of Dalian University of Technology, Shenyang, Liaoning 110042, P.R. China.
Analytical chemistry
|July 2, 2025
概括
我们引入了动态弹性,这是癌细胞机械强度的新指标,使用循环机械加载微通道. 这种方法量化了变形后的细胞恢复,有助于开发用于瘤进展和化疗有效性的机械生物标志物.
科学领域:
- 生物物理学的生物物理.
- 细胞生物学 细胞生物学
- 生物技术是生物技术.
背景情况:
- 癌细胞的生存依赖于机械弹性,以导航微环境和血管障碍.
- 目前的单细胞机制类型缺乏对变形后恢复动态和标准化弹性指标的强有力的量化.
- 这些局限性阻碍了对瘤进展的关键机械生物标志物的发展.
研究的目的:
- 引入动态弹性作为一种新的生物力学指标,通过连续的变形恢复周期来评估细胞恢复能力.
- 开发和验证一个框架,用循环机械负载微通道 (CMLMs) 来量化机械弹性.
- 研究机械弹性,细胞骨特性和化疗易感性之间的关系.
主要方法:
- 利用循环机械加载微通道 (CMLMs) 将受控的机械刺激应用于单个细胞.
- 使用面积比 (AR) 和圆形变形 (CD) 量化变形,并通过动态时间扭曲 (DTW) 引入了弹性度量 (d_res).
- 分析了HeLa和BxPC-3细胞系的机械弹性,并评估了鲁辛化疗对细胞弹性的影响.
主要成果:
- 视角比 (AR) 成为控制流速下细胞恢复行为的强有力的指标.
- 细胞机械弹性主要受到细胞骨组织和交叉链密度的影响,而不是细胞大小.
- 达努鲁比治疗表明细胞弹性的度依赖调节,表明对大菌株变形的机械敏感性和量化药物诱导的细胞骨损伤.
结论:
- 动态弹性为细胞机械特性和恢复动态提供了一个全面的评估框架.
- 这种方法通过量化药物诱导的细胞骨损伤,为化疗易感性提供了新的见解.
- 开发的方法可以帮助发现癌症进展和治疗反应的新机械生物标志物.
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