Mechanical properties of hepatocellular carcinoma cells

World Journal of Gastroenterology : WJG
Gang ZhangWei-Qun Yu

Abstract

To study the viscoelastic properties of human hepatocytes and hepatocellular carcinoma (HCC) cells under cytoskeletal perturbation, and to further to study the viscoelastic properties and the adhesive properties of mouse hepatoma cells (HTC) in different cell cycle. Micropipette aspiration technique was adopted to measure viscoelastic coefficients and adhesion force to collagen coated surface of the cells. Three kinds of cytoskeleton perturbing agents, colchicines (Col), cytochalasin D (CD) and vinblastine (VBL), were used to treat HCC cells and hepatocytes and the effects of these treatment on cell viscoelastic coefficients were investigated. The experimental results were analyzed with a three-element standard linear solid. Further, the viscoelastic properties of HTC cells and the adhesion force of different cycle HTC cells were also investigated. The synchronous G(1) and S phase cells were achieved through thymine-2-desoryriboside and colchicines sequential blockage method and thymine-2-desoryriboside blockage method respectively. The elastic coefficients, but not viscous coefficient of HCC cells (K(1)=103.6+/-12.6N.m(-2), K(2)=42.5 +/ 10.4N.m(-2), mu=4.5 +/- 1.9Pa.s), were significantly higher than the corresponding value fo...Continue Reading

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