Abstract
Objective: To investigate the expression of Fas, Fas ligand (FasL) and CD80 on the cell surface of mouse acute myelomonocytic leukemia cell line WEHI-3 and the function of FasL. Methods: The expression of Fas, FasL and CD80 was detected on WEHI-3 cell surface by flow cytometry. Simultaneously the function of FasL was determined by Thymidine (3H-TdR) Incorporation. Results: The expression of CD80 and Fas on WEHI-3 cell surface was 5.06%±0.41% and 6.75%±2.31% (n=5) respectively, and the expression of FasL was up to 63.73%±5.23% (n=5). The apoptotic rate of YAC-1 cells was 26%±4.5%, 35%±3.2% and 43%±2.7% (n=5) respectively when WEHI-3 (effector cell, E) and Fas+ YAC-1 cells (target cell, T) were cultured in the ratio of 3:1, 10:1 and 30:1. Conclusion: WEHI-3 cells express high FasL, low Fas and CD80, and can induce apoptosis of Fas+ YAC-1 cells.
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