液体流量调节细胞粘附的单细胞力光谱,用于剖析瘤转移中的血动力学
Jiajia Wei1,2,3, Yanqi Yang1,2,3, Mi Li1,2,3
1State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China. limi@sia.cn.
Nanoscale
|December 8, 2023
概括
流体流环境显著削弱癌细胞粘附,这是转移的关键因素. 原子力显微镜显示,与静态培养相比,在流动条件下细胞粘附率降低,影响癌细胞扩散.
科学领域:
- 生物物理学的生物物理.
- 细胞生物学 细胞生物学
- 癌症研究 癌症研究
背景情况:
- 细胞粘附对于癌细胞转移至关重要.
- 流体流环境影响转移性细胞的行为.
- 流量条件对细胞粘附的影响尚不清楚.
研究的目的:
- 通过基于原子力显微镜的单细胞力光谱 (AFM-SCFS) 研究流体流对细胞粘附的影响.
- 模拟癌细胞在转移期间经历的流体流环境.
- 分析实验参数对粘合力的影响.
主要方法:
- 使用基于AFM的SCFS测量单细胞粘附力.
- 采用流体细胞培养装置来模仿转移条件.
- 测试的探头涂上了细胞粘附分子,并使用了共聚焦光显微镜.
主要成果:
- 在流体流媒体的增长后,细胞粘附力显著下降.
- 在静态培养基中,粘附力增加.
- 对焦显微镜证实了在流动条件下弱化的细胞粘附分子相互作用.
结论:
- 流体流环境显著降低了细胞粘附.
- AFM-SCFS提供了一种新的方法来研究单细胞水平的细胞流体相互作用.
- 这些发现有助于理解瘤转移中的血液动力学.
相关概念视频
01:23Flow Cytometry
The development of flow cytometry techniques began in 1934 with initial attempts by Andrew Moldavan, a bacteriologist who counted the cells in a flowing capillary system. Moldavan pumped cells through a capillary tube focused under a microscope for visualization. The invention of photometry allowed the measurement of differentially-stained cells, and Louis Kamentsky developed the first multiparameter flow cytometer in 1965 to identify and count the cancer cells in cervical tissue specimens.
In...
In...
01:19Protein Dynamics in Living Cells
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...