Effect of Heat Stress on Expression of DILP2 and DILP3 Insulin-Like Peptide Genes in Drosophila melanogaster Adults
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In a number of works, it was demonstrated that insulin/insulin-like growth factor signaling pathway in the Drosophila melanogaster can be involved in the control of the organism reaction to stress. However, it remains unclear which of eight insulin-like peptides (ligands of insulin/insulin-like growth factor signaling pathway) known in the D. melanogaster are involved in the response to different types of stress. We conducted immunohistochemical analysis of the expression of two insulin-like peptide genes (DILP2 and DILP3) in insulin-producing cells of the brain in adult D. melanogaster females after heat stress. We for the first time found that the DILP3 is one of the components of the response to heat stress, while the DILP2 is apparently not involved in the organism response to heat stress.
KeywordsDILP2 and DILP3 insulin-like peptides insulin-producing cells heat stress Drosophila
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