Tissue- and sex-specific small RNAomes reveal sex differences in response to the environment.

Détails

Ressource 1Télécharger: journal.pgen.1007905.pdf (2413.26 [Ko])
Etat: Serval
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_298BFAD57531
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Tissue- and sex-specific small RNAomes reveal sex differences in response to the environment.
Périodique
PLoS Genetics
Auteur(s)
Bezler A., Braukmann F., West S.M., Duplan A., Conconi R., Schütz F., Gönczy P., Piano F., Gunsalus K., Miska E.A., Keller L.
ISSN
1553-7404 (Electronic)
ISSN-L
1553-7390
Statut éditorial
Publié
Date de publication
2019
Peer-reviewed
Oui
Volume
15
Numéro
2
Pages
e1007905
Langue
anglais
Résumé
RNA interference (RNAi) related pathways are essential for germline development and fertility in metazoa and can contribute to inter- and trans-generational inheritance. In the nematode Caenorhabditis elegans, environmental double-stranded RNA provided by feeding can lead to heritable changes in phenotype and gene expression. Notably, transmission efficiency differs between the male and female germline, yet the underlying mechanisms remain elusive. Here we use high-throughput sequencing of dissected gonads to quantify sex-specific endogenous piRNAs, miRNAs and siRNAs in the C. elegans germline and the somatic gonad. We identify genes with exceptionally high levels of secondary 22G RNAs that are associated with low mRNA expression, a signature compatible with silencing. We further demonstrate that contrary to the hermaphrodite germline, the male germline, but not male soma, is resistant to environmental RNAi triggers provided by feeding, in line with previous work. This sex-difference in silencing efficacy is associated with lower levels of gonadal RNAi amplification products. Moreover, this tissue- and sex-specific RNAi resistance is regulated by the germline, since mutant males with a feminized germline are RNAi sensitive. This study provides important sex- and tissue-specific expression data of miRNA, piRNA and siRNA as well as mechanistic insights into sex-differences of gene regulation in response to environmental cues.
Mots-clé
Animals, Caenorhabditis elegans/genetics, Caenorhabditis elegans Proteins/genetics, Female, Gene Expression Regulation/genetics, Germ Cells/physiology, Gonads/physiology, High-Throughput Nucleotide Sequencing/methods, Male, MicroRNAs/genetics, RNA Interference/physiology, RNA, Double-Stranded/genetics, RNA, Messenger/genetics, RNA, Small Interfering/genetics, Sex Characteristics
Pubmed
Web of science
Open Access
Oui
Création de la notice
05/02/2019 16:54
Dernière modification de la notice
08/05/2019 16:13
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