2009Carcinogenesis,Teratogenesis and MutagenesisRequires access

Roles of TRAIL in Vitamine Succinate-induced Apoptosis in Human Gastric Cancer Cells

Kun Wu

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Abstract

BACKGROUND AND AIM:In order to investigate the roles of TRAIL in vitamin E succinate(VES)-induced apoptosis in human gastric cancer MKN28 cells.MATERIALS AND METHODS:The MKN28 huamn gastric cancer cells were cultured with different concentrations of VES.The MKN28 cells were divided into four groups:5,10,20 μg/ml VES and control groups.Apoptosis was assessed by DAPI staining,and TRAIL-receptor(DR4,DR5,DcR1 and DcR2)protein expressions induced by VES at different doses and different time points were measured by western blot.RESULTS:The results showed that VES obviously induced cells to undergo apoptosis.The expression of DR4 and DR5 were increased by VES at 5,10,20 μg/ml for 12 h;however the expression of DcR1 and DcR2 were reduced.DR4 and DR5 were increased by the hour,then reached the top level at 12 h.CONCLUSION:The data implicated that TRAIL pathway might be invovled in VES-induced apoptosis.

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BACKGROUND AND AIM:In order to investigate the roles of TRAIL in vitamin E succinate(VES)-induced apoptosis in human gastric cancer MKN28 cells.MATERIALS AND METHODS:The MKN28 huamn gastric cancer cells were cultured with different concentrations of VES.The MKN28 cells were divided into four groups:5,10,20 μg/ml VES and control groups.Apoptosis was assessed by DAPI staining,and TRAIL-receptor(DR4,DR5,DcR1 and DcR2)protein expressions induced by VES at different doses and different time points were measured by western blot.RESULTS:The results showed that VES obviously induced cells to undergo apoptosis.The expression of DR4 and DR5 were increased by VES at 5,10,20 μg/ml for 12 h;however the expression of DcR1 and DcR2 were reduced.DR4 and DR5 were increased by the hour,then reached the top level at 12 h.CONCLUSION:The data implicated that TRAIL pathway might be invovled in VES-induced apoptosis.

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Available abstract

BACKGROUND AND AIM:In order to investigate the roles of TRAIL in vitamin E succinate(VES)-induced apoptosis in human gastric cancer MKN28 cells.MATERIALS AND METHODS:The MKN28 huamn gastric cancer cells were cultured with different concentrations of VES.The MKN28 cells were divided into four groups:5,10,20 μg/ml VES and control groups.Apoptosis was assessed by DAPI staining,and TRAIL-receptor(DR4,DR5,DcR1 and DcR2)protein expressions induced by VES at different doses and different time points were measured by western blot.RESULTS:The results showed that VES obviously induced cells to undergo apoptosis.The expression of DR4 and DR5 were increased by VES at 5,10,20 μg/ml for 12 h;however the expression of DcR1 and DcR2 were reduced.DR4 and DR5 were increased by the hour,then reached the top level at 12 h.CONCLUSION:The data implicated that TRAIL pathway might be invovled in VES-induced apoptosis.

Key concepts: Apoptosis, DAPI, Western blot, Cancer, Cancer cell, Chemistry, Blot, Staining

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