Effect of the all trans retinoic acid and Ara-c on the telomerase activity of HL-60 cells / 中国临床药理学与治疗学

Aim To investigate the possible mechanism of human promyelocytic leukemia cells differentiation and apoptosis induced by all trans_retinoic acid (ATRA) and Ara_c. Methods The effects of ATRA and Ara_c on the tolomerase activity of HL_60 cells were detected by PCR_ELISA. Results The tolomerase activity of HL_60 cells declined during the course of differentiation and apoptosis induced by ATRA and Ara_c. Conclusion These findings suggest that ATRA and Ara_c can inhibit tolomerase activity of HL_60 cells. It may be one of the important mechanisms of human promyelocytic leukemia cells differentiation and apoptosis induced by ATRA and Ara_c.