Through this method, it was found that after keratin recombination, the cell mechanics of tumor cells changed greatly, and they were more likely to deform when passing through areas with limited area (Fig. 5b). At the same time, its deformability is also affected by lysophosphatidic acid. Compared with cell deformation, adhesion is a more complex process. However, the theoretical model can still be established by physical mechanics and mathematical methods. Although it is impossible to completely simulate the physiological state, it is helpful to compare the adhesion between different cells or different drugs. When two deformable objects adhere, the application of external force to separate them will lead to the deformation of their contact area. According to the degree of deformation and the strength of external force, it can be determined according to Johnson Kendall Roberts (JKR) theory. Figure 5C shows the process from adhesion to separation between two cells. The adhesion energy between mouse sarcoma cells was quantified by the strong adhesion produced by high concentration dextran solution. Although there is no theory to calculate the adhesion under different conditions based on the adhesion between immune cells and tumor cells. However, quantifying the adhesion of different adhesion molecules to different cancer cells and different immune cells will promote the development of cancer precision treatment and genetic engineering.
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