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Influence of tissue-specific superoxid dismutase genes expression in brain cells on Drosophila melanogaster sensitivity to oxidative stress and viability

Vitushynska M.V., Matiytsiv N.P., Chernyk Y.I.

SUMMARY. The study has shown that both functional gene knockout Sod1 and Sod2 and their overexpression in neurons and glial tissue increase the sensitivity of Drosophila melanogaster to oxidative stress (OS) conditions. The lowest survival rate was only 20.5 % in insects with Sod2 knockout in neurons. Comparative analysis of the survival curves showed that adults with altered tissue-specific expression of the studied genes had reduced average and maximum life span. Under OS conditions induced by 5 % hydrogen peroxide the life spans of wild type Oregon R and transgenic insects were significantly reduced. Altered Sod gene expression in glial tissue leads to degenerative changes in Drosophila brain at the young age. During the aging of insects and the action of pro-oxidants increasing of neurodegenerative phenotype is observed.

Key words: Drosophila melanogaster, Sods, oxidative stress, pro-oxidants, life span, neurodegeneration

Tsitologiya i Genetika 2015, vol. 49, no. 2, pp. 21-28

Vitushynska M.V., Matiytsiv N.P., Chernyk Y.I. Influence of tissue-specific superoxid dismutase genes expression in brain cells on Drosophila melanogaster sensitivity to oxidative stress and viability, Tsitol Genet., 2015, vol. 49, no. 2, pp. 21-28.