通过测量活性变形行为来描述癌细胞力学
Jiantao Feng1, Quanmei Sun2, Peipei Chen2
1Artemisinin Research Center and Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, 100700, China.
Small methods
|September 29, 2023
概括
癌细胞表现出独特的活性变形行为,可用原子力显微镜和变形行为细胞计测量. 这种新方法提供了一种更好的方法来了解癌细胞机制,并确定潜在的治疗点.
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:
- 使用静态平衡的传统细胞力学模型无法捕捉动态细胞变形,导致癌症与正常细胞的区别不准确.
- 了解恶性瘤进展过程中的细胞结构动态对于开发有效的癌症诊断和治疗方法至关重要.
研究的目的:
- 引入一种用于测量癌细胞活性变形行为的新方法.
- 建立新的生物力学参数来表征癌细胞机制.
- 探索水素和动因细胞骨架在癌细胞变形中的作用.
主要方法:
- 使用原子力显微镜 (AFM) 来测量附着癌细胞中的明显波桑比率.
- 采用变形行为细胞计 (DBC) 来评估悬浮癌细胞的形状恢复.
- 在变形测量过程中应用了长时间放松 (大约5秒).
主要成果:
- 积极的变形行为提供了一个更准确的癌症细胞机制的特征与传统的参数,如刚性,扩散和粘度相比.
- 显而易见的波桑比率 (附着细胞) 和形状恢复 (悬浮细胞) 作为关键的变形行为参数.
- 确定了水素素是促进癌细胞变形和作为下游效应因子的actin细胞骨架至关重要的.
结论:
- 活跃变形行为为定义癌细胞机制提供了一种优越的方法.
- 开发的方法和参数可以增强癌症和正常细胞之间的区别.
- 癌细胞活跃变形行为具有作为癌症治疗新生物力学标记物或治疗点的潜力.
相关概念视频
Cell-matrix's Response to Mechanical Forces
2.7K
In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
Anchoring junctions mechanically attach a cell to the...
Anchoring junctions mechanically attach a cell to the...
2.7K
Studying the Cytoskeleton
6.3K
The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering the cytoskeletal architecture around the 1960s, which allowed obtaining structural information at a high-resolution level. However, the sample preparation procedure often limits this ability in biological samples. Several protocols have been developed over the years to optimize sample preparation. In one of the protocols known as rotary...
6.3K
Cancer Cell Migration through Invadopodia
2.3K
Invadosome is a broad category of cell surface structures with proteolytic activity that degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However,...
2.3K
Adaptive Mechanisms in Cancer Cells
5.8K
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
5.8K


