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Mouse paternal RNAs initiate a pattern of metabolic disorders in a line-dependent manner

Satir-Basaran, Guzide, Kianmehr, Leila, Mehmetbeyoglu, Ecmel, Korkmaz Bayram, Kezban, Memis, Mehmet, Yilmaz, Zeynep, Tufan, Esra, Taheri, Serpil, Kelestimur, Fahrettin and Rassoulzadegan, Minoo 2022. Mouse paternal RNAs initiate a pattern of metabolic disorders in a line-dependent manner. Frontiers in Genetics 13 , 839841. 10.3389/fgene.2022.839841

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A wide range of diseases result from environmental effects, and the levels of many native transcripts are altered. The alteration of non-coding RNAs (ncRNAs) and transmission of the variation to the next generation is increasingly recognized as a marker of disease. However, the determining signals and mechanisms of RNA-induced heritability remain unclear. We performed functional tests with four different genotypes of mice maintained on a high-fat diet to trace the transfer of the obesity/diabetes phenotype to the next generation in order to detect common signals. Two founders of four mouse lines (B6/D2 hybrid and Dnmt2−/−C57BL/6) resist and do not change their phenotype while their sperm RNAs after microinjection into fertilized mouse eggs transfer the newly acquired phenotypes in a susceptible inbred line (C57BL/6 or Balb/c). Unexpectedly, in the same line of experiments, sperm RNA from animals raised on a normal diet when mixed with the sperm RNA from animals raised on a diet high in fat or synthetic miR-19b (inducer of obesity) affects or prevents the development of obesity and diabetes. However, it remains unclear what happens to ncRNA signaling under diet. With a comprehensive new analysis of the transcripts maintained as an RNA/DNA hybrid in sperm, we suggest that a fraction of the RNAs are stably attached to the genome. Thus, we propose that changes in the dynamics of ncRNA retention on DNA by factors such as transcriptional variations or lack of adequate methylation could serve as molecular markers to trace these epigenetics events.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Publisher: Frontiers Media
ISSN: 1664-8021
Date of First Compliant Deposit: 7 October 2022
Date of Acceptance: 8 February 2022
Last Modified: 12 Jan 2024 15:00

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