细胞力学的非线性温度依赖性以及对潜在的波器应用的后果
Simon Valentin Neidinger1, Christoph Westerhausen2
1Physiology, Faculty of Medicine, Institute of Theoretical Medicine, University of Augsburg, 86159 Augsburg, Germany; Institute of Physics, University of Augsburg, 86159 Augsburg, Germany.
Acta biomaterialia
|March 12, 2026
概括
温度显著影响黑色素瘤细胞机制,影响硬度,可变形性和粘附性. 这些取决于温度的变化可以用于先进的,无标签的循环瘤细胞隔离系统.
科学领域:
- 生物物理学的生物物理.
- 细胞力学 细胞力学
- 生物医学工程 生物医学工程
背景情况:
- 隔离循环瘤细胞 (CTC) 的无标签方法对于癌症诊断至关重要.
- 以前的研究忽视了温度对细胞机械性质的显著影响,这与过有关.
研究的目的:
- 系统地研究黑色素瘤细胞机械性质的温度依赖性.
- 评估利用这些温度依赖性质在使用微流体过的CTC隔离中的潜力.
主要方法:
- 原子力光谱法被用来测量单个A375黑色素瘤细胞的机制 (Young的模量,变形,粘附) 在八个温度 (15°C39°C).
- 用孔径减小的过器进行了微流体实验,以评估温度依赖的细胞捕获和过效率.
主要成果:
- 黑色素瘤细胞的刚性,可变形性和粘附性表现出强烈的,非线性依赖温度,独立于细胞大小.
- 在17°C和37°C之间,Young的模量,变形和粘附变化分别为~2.2,~1.4和~2.7的因素.
- 微流体过表明,细胞可以在更高的温度下穿透较小的孔隙,验证了机械性质的发现.
结论:
- 细胞的机械特性对生理范围内的温度变化高度敏感.
- 细胞机制的温度控制变化为选择性CTC隔离提供了一种新的,无标签的方法.
- 这项研究提供了一个全面的数据集,并验证了推进癌症诊断中CTC隔离技术的新策略.
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