Lee YH, Kim SY, Kim JR, Yoh KT, Baek SH, Kim MJ, Ryu SH, Suh PG, Kim JH. Overexpression of phospholipase Cbeta-1 protects NIH3T3 cells from oxidative stress-induced cell death.
Life Sci 2000;
67:827-37. [PMID:
10968412 DOI:
10.1016/s0024-3205(00)00677-9]
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Abstract
Oxidative stress has been implicated in a wide range of cellular damage which includes DNA oxidation, membrane lipid peroxidation, and apoptosis. In our study, we found that overexpression of PLC-beta1 in NIH3T3 fibroblasts protected them from cell death occuring in response to oxidative stress. Cell death caused by treatment with prooxidant tert-butylhydroperoxide (TBH), H2O2, or CdCl2 was considerably suppressed in PLC-beta1 overexpressed NIH/beta1-14 cells in comparison to control NIH/neo cells. However, overexpression of PLC-beta1 failed to protect the cells from toxicity by diamide or KCN. In addition, while accumulation of c-fos mRNA was observed within 30 min of TBH treatment in vector transfected NIH/neo cells, TBH-induced c-fos mRNA generation was completely suppressed in NIH/beta1-14 cells, while that of c-jun and GAPDH was not affected. These findings suggest that PLC-beta1 may play a role in process that can protect cells from oxidative stress-induced cell death.
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