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      https://www.ias.ac.in/article/fulltext/jbsc/024/01/0013-0019

    • Keywords

       

      Apoptosis; insect cells; oxidative stress; reactive oxygen species; Sf9 cells

    • Abstract

       

      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 ofin vitro culturedSpodoptera frugiperda (sf9) insect cells as a model to study oxidative stress induced programmed cell death. Apoptosis ofin vitro cultured sf9 cells was induced by the exogenous treatment of H2O2 to cells growing in culture. The AD50 (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 AD50 was about 475 Μm. Apoptosis could also be induced byin situ generation of H2O2 by the inhibition of catalase activity upon hydroxylamine treatment. Hydroxylamine acted synergistically with H2O2 with an AD50 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.

    • Author Affiliations

       

      Seyed E Hasnain1 Tarvinder K Taneja1 2 Nand K Sah1 3 Manjari Mohan1 2 Niteen Pathak1 Sudhir Sahdev1 Mohammad Athar2 Satish M Totey4 Rasheedunnisa Begum1

      1. Laboratories of Eukaryotic Gene Expression, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi - 110 067, India
      2. Department of Medical Elementology and Toxicology, Jamia Hamdard, Hamdard Nagar, New Delhi - 110 062, India
      3. Department of Botany, RD College, Sheikhpura - 811 105, India
      4. Laboratories of Embryo Biotechnology, National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi - 110 067, India
    • Dates

       
  • Journal of Biosciences | News

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