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Involvement of the Gagr Gene, a Domesticated gag Gene of Retrovirus, in the Stress Response Pathway in Different Drosophila Species
- Authors: Gigin A.N.1, Nefedova L.N.1
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Affiliations:
- Department of Biology, Lomonosov Moscow State University
- Issue: Vol 57, No 3 (2023)
- Pages: 483-491
- Section: ГЕНОМИКА. ТРАНСКРИПТОМИКА
- URL: https://ogarev-online.ru/0026-8984/article/view/138622
- DOI: https://doi.org/10.31857/S0026898423030047
- EDN: https://elibrary.ru/CHBBPQ
- ID: 138622
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Abstract
The Gagr gene is a domesticated gag retroelement gene in Drosophila melanogaster, whose function is associated with a stress response. The protein products of the Gagr gene and its homologues in different Drosophila species have a highly conserved structure; however, they demonstrate a certain variability in the promoter region of the gene, apparently associated with the gradual acquisition of a new function and involvement in new signaling pathways. In this work we studied the effect of oxidative stress caused by ammonium persulfate on the survival of various species of the genus Drosophila (D. melanogaster, D. mauritiana, D. simulans, D. yakuba, D. teissieri, D. pseudoobscura), analyzed the correlation between the structure of promoter regions and stress-induced changes in the expression of the Gagr gene and its homologues in different Drosophila species and comparison of stress-induced changes in the expression of oxidative stress markers: Jak-STAT signaling pathway activator gene upd3, Jak-STAT pathway effector vir-1, and signaling pathway target IMD Rel. It was found that in D. simulans and D. mauritiana sensitivity to ammonium persulfate is significantly increased, which correlates with a reduced level of transcription of vir-1 gene orthologues. The latter is due to a decrease in the number of binding sites for the transcription factor STAT92E, a component of the Jak-STAT signaling pathway, in the vir-1 promoter region. Consistent changes in the expression of the Gagr, upd3, vir-1 genes are observed in all species of the melanogaster subgroup, except D. pseudoobscura, which indicates an increase in the role of Gagr in the regulation of stress response pathways during the phylogenesis of the genus Drosophila.
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About the authors
A. N. Gigin
Department of Biology, Lomonosov Moscow State University
Email: nefedova@mail.bio.msu.ru
Russia, 119234, Moscow
L. N. Nefedova
Department of Biology, Lomonosov Moscow State University
Author for correspondence.
Email: nefedova@mail.bio.msu.ru
Russia, 119234, Moscow
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