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Updated: Jul 4, 2026

Embryo Microinjection and Knockout Mutant Identification of CRISPR/Cas9 Genome-Edited Helicoverpa Armigera (Hübner)
Published on: July 1, 2021
RNA editing regulates insect gamma-aminobutyric acid receptor function and insecticide sensitivity
Zeineb Es-Salah1, Bruno Lapied, Gaëlle Le Goff
1IFR QUASAV 149, RCIM Laboratory, UPRES-EA 2647/USC INRA, University of Angers, UFR Sciences, 2 Boulevard Lavoisier, F-49045 Angers Cedex, France.
Abstract:
A-to-I pre-mRNA editing by adenosine deaminase enzymes has been reported to enhance protein diversity in the nervous system. In Drosophila, the resistance to dieldrin (RDL) gamma-aminobutyric acid (GABA) receptor subunit displays an editing site (R122) that is close to the putative GABA-binding site. We assessed the functional effects of editing at this site by expressing homomeric RDL receptors in Xenopus oocytes. After replacement of arginine 122 with a glycine, both agonist and fipronil potencies were shifted to the right in either fipronil-sensitive receptors or mutated resistant receptors (A301G/T350M). These data provide the first insight on the influence of RNA editing on GABA receptor function.
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