ATF7-Dependent Epigenetic Changes Are Required for the Intergenerational Effect of a Paternal Low-Protein Diet.

Fiche publication

Date publication

mars 2020

Journal

Molecular cell

Auteurs

Membres identifiés du Cancéropôle Est :
Pr CHATTON Bruno

Tous les auteurs :
Yoshida K, Maekawa T, Ly NH, Fujita SI, Muratani M, Ando M, Katou Y, Araki H, Miura F, Shirahige K, Okada M, Ito T, Chatton B, Ishii S

Lien Pubmed

https://www.ncbi.nlm.nih.gov/pubmed/32197065

Résumé

Paternal dietary conditions may contribute to metabolic disorders in offspring. We have analyzed the role of the stress-dependent epigenetic regulator cyclic AMP-dependent transcription factor 7 (ATF7) in paternal low-protein diet (pLPD)-induced gene expression changes in mouse liver. Atf7 mutations cause an offspring phenotype similar to that caused by pLPD, and the effect of pLPD almost vanished when paternal Atf7 mice were used. ATF7 binds to the promoter regions of ∼2,300 genes, including cholesterol biosynthesis-related and tRNA genes in testicular germ cells (TGCs). LPD induces ATF7 phosphorylation by p38 via reactive oxygen species (ROS) in TGCs. This leads to the release of ATF7 and a decrease in histone H3K9 dimethylation (H3K9me2) on its target genes. These epigenetic changes are maintained and induce expression of some tRNA fragments in spermatozoa. These results indicate that LPD-induced and ATF7-dependent epigenetic changes in TGCs play an important role in paternal diet-induced metabolic reprograming in offspring.