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YI Xue, LIU Fang, ZOU Ping, XIAO Juan, CHENG Hui. Experimental on Apoptosis in Leukemia Cells Induced by Thapsigargin[J]. Cancer Research on Prevention and Treatment, 2011, 38(12): 1389-1392. DOI: 10.3971/j.issn.1000-8578.2011.12.012
Citation: YI Xue, LIU Fang, ZOU Ping, XIAO Juan, CHENG Hui. Experimental on Apoptosis in Leukemia Cells Induced by Thapsigargin[J]. Cancer Research on Prevention and Treatment, 2011, 38(12): 1389-1392. DOI: 10.3971/j.issn.1000-8578.2011.12.012

Experimental on Apoptosis in Leukemia Cells Induced by Thapsigargin

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  • Received Date: January 09, 2011
  • Revised Date: September 26, 2011
  • ObjectiveTo investigate apoptosis in mouse leukemia cell (WEHI-3) induced by Thapsigargin and its mechanism. Methods Apoptosis induced by Thapsigargin was examined by flow cytometry and Agarose gel electrophoresis of DNA and TUNEL staining.Free calcium([Ca2+]i)was determined by Fura-2 fluorescein load techinique.RT-PCR was used to analyze the mRNA of Caspase-12. Results After exposure to Thapsigargin of 0.5,1 and 2 μmol/L,WEHI-3 cells were induced to apoptosis.The apoptotic index was examined by Annexin-V/PI double-stained,Agarose gel electrophoresis of DNA and TUNEL. The results showed that the apoptotic index of the experimental groups was significantly higher than that of the control group(For example:the apoptotic index of the experimental groups determined by Annexin-V/PI double-stained were (25.3±3.2)%,(46.7±3.9)% and (70.2±2.3)%, respectively, which were significantly higher than the apoptotic index of the control group which was (7.6±0.4)% (F=26.52,P<0.01);and the apoptotic index was in dose dependent manner.After exposure to Thapsigargin,that [Ca2+]i in the experimental group was significantly higher than that of the control group[(156.5±10.3)nmol/L,(180.3±15.6) nmol/L and (10.7±15.3)nmol/L vs. (78.3±11.2)nmol/L(F=21.26,P<0.01)].The mRNA expression of Caspase-12 increased with an increase in Thapsigargin concentration. Conclusion Thapsigargin can induce the WEHI-3 to apoptosis by Endoplasmic reticulum stress of [Ca2+]i overload,Ca2+ may play a promising target for cancer therapy.
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