Abstract
Activation of lymphatic cells is associated with changes in morphology, ultrastructure and adhesion force. We have investigated the activation efficiency of Staphylococcus aureus (SAC) on B-cell chronic lymphatic leukaemia (B-CLL) cells using atomic force microscopy (AFM), and found changes in the above properties. Cell viability and proliferation were measured using Cell Counting Kit-8 (CCK-8) and enzyme-linked immunosorbent assay (ELISA). AFM clearly showed that the volume and nuclear-cytoplasm ratio of cells increased significantly with activated time. It also showed that pseudopodia and immunological synapses began to appear at 24 h. In the activation process, nano-structures of the cell surface became aggregated, and adhesion increased. In conclusion, the results indicate a close relationship between membrane reconstruction and multiplication process of B-CLL cells.
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