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- W4315708859 endingPage "e1010600" @default.
- W4315708859 startingPage "e1010600" @default.
- W4315708859 abstract "In lepidopteran insects, dichotomous spermatogenesis produces eupyrene spermatozoa, which are nucleated, and apyrene spermatozoa, which are anucleated. Both sperm morphs are essential for fertilization, as eupyrene sperm fertilize the egg, and apyrene sperm is necessary for the migration of eupyrene sperm. In Drosophila, Prmt5 acts as a type II arginine methyltransferase that catalyzes the symmetrical dimethylation of arginine residues in the RNA helicase Vasa. Prmt5 is critical for the regulation of spermatogenesis, but Vasa is not. To date, functional genetic studies of spermatogenesis in the lepidopteran model Bombyx mori has been limited. In this study, we engineered mutations in BmPrmt5 and BmVasa through CRISPR/Cas9-based gene editing. Both BmPrmt5 and BmVasa loss-of-function mutants had similar male and female sterility phenotypes. Through immunofluorescence staining analysis, we found that the morphs of sperm from both BmPrmt5 and BmVasa mutants have severe defects, indicating essential roles for both BmPrmt5 and BmVasa in the regulation of spermatogenesis. Mass spectrometry results identified that R35, R54, and R56 of BmVasa were dimethylated in WT while unmethylated in BmPrmt5 mutants. RNA-seq analyses indicate that the defects in spermatogenesis in mutants resulted from reduced expression of the spermatogenesis-related genes, including BmSxl, implying that BmSxl acts downstream of BmPrmt5 and BmVasa to regulate apyrene sperm development. These findings indicate that BmPrmt5 and BmVasa constitute an integral regulatory module essential for spermatogenesis in B. mori." @default.
- W4315708859 created "2023-01-12" @default.
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- W4315708859 date "2023-01-12" @default.
- W4315708859 modified "2023-10-14" @default.
- W4315708859 title "The Prmt5-Vasa module is essential for spermatogenesis in Bombyx mori" @default.
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- W4315708859 doi "https://doi.org/10.1371/journal.pgen.1010600" @default.
- W4315708859 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36634107" @default.
- W4315708859 hasPublicationYear "2023" @default.
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