Environmentally induced variation in sperm sRNAs is linked to gene expression and transposable elements in zebrafish offspring.

IF 3.1 2区 生物学 Q2 ECOLOGY
Alice M Godden, Willian T A F Silva, Berrit Kiehl, Cécile Jolly, Leighton Folkes, Ghazal Alavioon, Simone Immler
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引用次数: 0

Abstract

Environmental factors affect not only paternal condition but may translate into the following generations where sperm-mediated small RNAs (sRNAs) can contribute to the transmission of paternal effects. sRNAs play a key role in the male germ line in genome maintenance and repair, and particularly in response to environmental stress and the resulting increase in transposable element (TE) activity. Here, we investigated how the social environment (high competition, low competition) of male zebrafish Danio rerio affects sRNAs in sperm and how these are linked to gene expression and TE activity in their offspring. In a first experiment, we collected sperm samples after exposing males to each social environment for 2 weeks to test for differentially expressed sperm micro- (miRNA) and piwi-interacting RNAs (piRNA). In a separate experiment, we performed in vitro fertilisations after one 2-week period using a split-clutch design to control for maternal effects and collected embryos at 24 h to test for differentially expressed genes and TEs. We developed new computational prediction tools to link sperm sRNAs with differentially expressed TEs and genes in the embryos. Our results support the idea that the molecular stress response in the male germ line has significant down-stream effects on the molecular pathways, and we provide a direct link between sRNAs, TEs and gene expression.

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来源期刊
Heredity
Heredity 生物-进化生物学
CiteScore
7.50
自引率
2.60%
发文量
84
审稿时长
4-8 weeks
期刊介绍: Heredity is the official journal of the Genetics Society. It covers a broad range of topics within the field of genetics and therefore papers must address conceptual or applied issues of interest to the journal''s wide readership
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