In vitro cultured Spodoptera frugiperda insect cells:: Model for oxidative stress-induced apoptosis

被引:25
作者
Hasnain, SE
Taneja, TK
Sah, NK
Mohan, M
Pathak, N
Sahdev, S
Athar, M
Totey, SM
Begum, R
机构
[1] Natl Inst Immunol, Lab Eukaryot Gene Express, New Delhi 110067, India
[2] Natl Inst Immunol, Lab Embryo Biotechnol, New Delhi 110067, India
[3] Jamia Hamdard, Dept Med Elementol & Toxicol, New Delhi 110062, India
关键词
apoptosis; insect cells; oxidative stress; reactive oxygen species; Sf9; cells;
D O I
10.1007/BF02941101
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Cellular imbalance in the levels of antioxidants and reactive oxygen species (ROS) is directly associated with a number of pathological states and results in programmed cell death or apoptosis. We demonstrate the use of in vitro cultured Spodoptera frugiperda (Sf9) insect cells as a model to study oxidative stress induced programmed cell death. Apoptosis of in vitro cultured Sf9 cells was induced by the exogenous treatment of H2O2 to cells growing in culture. The AD(50) (concentration of H2O2 inducing about 50% apoptotic response) varied with the duration of treatment, batch to batch variation of H2O2 and the physiological state of cells. At 24 h post-treatment with H2O2, AD(50) was about 475 mu m. Apoptosis could also be induced by in situ generation of H2O2 by the inhibition of catalase activity upon hydroxylamine treatment. Hydroxylamine acted synergistically with H2O2 with an AD(50) of 2.2 mM. DMSO, a free radical scavenger, inhibited H2O2-induced apoptosis thereby confirming the involvement of reactive oxygen species. Exposure of cells to UV radiation (312 nm) resulted in a dose-dependent induction of apoptosis. These results provide evidence on the novel use of insect cells as a model for oxidative stress-induced apoptosis.
引用
收藏
页码:13 / 19
页数:7
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