Abstract
To investigate the trichostain A (TSA)-induced expression of costinmulatory molecules CD80 and CD86 in HL-60, K562 and mononuclear cells (MNC) of bone marrow in AML patients and its clinical significance. The TSA-induced expression of costimulatory molecules CD80, CD86 in HL-60, K562 and BMMNC, and the cell viability were detected by flow cytometry; the mRNA expression of CD80 and CD86 was detected by RT-PCR; after the TSA-induced HL-60 cells and K562 cells were irradiated with 75 Gy, the effect of these cells on proliferation of PBMNC from healthy volunteers was determined with CCK-8 method. The HL-60 cells and BMMNC in AML patients expressed CD86, not expressed CD80, while the K562 cells not expressed CD86 and CD80. TSA could up-regulate the expression of CD86 in HL-60 cells and BMMNC of AML patients. The TSA-induced HL-60 cells expressing costimulatory molecule CD86 showed the proliferative effect on BMMNC from healthy volunteers. The TSA can induce the expression of costimulatory molecule CD86 in HL-60 cells and BMMNC in AML patients, and can improve the proliferation of PBMNC in healthy volunteers.
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