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[Influence of antisense oligonucleotide targeting Chk1/2 on apoptosis of K562 cell induced by DDP]. | LitMetric

[Influence of antisense oligonucleotide targeting Chk1/2 on apoptosis of K562 cell induced by DDP].

Zhongguo Shi Yan Xue Ye Xue Za Zhi

Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.

Published: October 2004

AI Article Synopsis

Article Abstract

In order to investigate the change of cell-cycle of K562 cells induced by cisplatin (DDP) and role of antisense oligonucleotide targeting Chk1/2 on apoptosis of K562 cell induced by DDP, the change of cell-cycle was observed by means of flow cytometry after different intervals in which the K562 cell were treated by DDP. Chk1/2 protein expression was investigated by Western blot and confocal microscopy in best condition of transfection of antisense oligonucleotide targeting Chk1/2 by lipofection. Apoptosis of K562 induced by DDP was investigated by flow cytometry after transfection of antisense oligonucleotide targeting Chk1/2. The results showed that K562 cells were arrested at S phase at 10 micromol/L of DDP. Transfection with antisense oligonucleotide targeting Chk1/2 could inhibit expression of Chk1/2 at different levels. The frequency of apoptosis induced by DDP was increased when transfected with antisense oligonucleotide targeting Chk1 and/or Chk2. The effect of antisense oligonucleotide targeting Chk1 and Chk2 synchronously exceeded that of antisense oligonucleotide targeting either Chk1 or Chk2 alone. In conclusion, Chk1 and Chk2 may be regarded as targets of therapy for leukemia.

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