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Testicular histone hyperacetylation in mice by valproic acid administration affects the next generation by changes in sperm DNA methylation
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Testicular histone hyperacetylation in mice by valproic acid administration affects the next generation by changes in sperm DNA methylation
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Testicular histone hyperacetylation in mice by valproic acid administration affects the next generation by changes in sperm DNA methylation
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Journal Article
Testicular histone hyperacetylation in mice by valproic acid administration affects the next generation by changes in sperm DNA methylation
2023
Overview
Various studies have described epigenetic inheritance through sperms. However, the detailed mechanisms remain unclear. In this study, we focused on DNA methylation in mice treated with valproic acid (VPA), an inducer of epigenomic changes, and analyzed the treatment effects on the sperm from the next generation of mice. The administration of 200 mg/kg/day VPA to mice for 4 weeks caused transient histone hyperacetylation in the testes and DNA methylation changes in the sperm, including promoter CpGs of genes related to brain function. Oocytes fertilized with VPA-treated mouse sperm showed methylation fluctuations at the morula stage. Pups that were fathered by these mice also showed behavioral changes in the light/dark transition test after maturation. Brain RNA-seq of these mice showed that the expression of genes related to neural functions were altered. Comparison of the sperm DNA methylation status of the next generation of mice with that of the parental generation revealed the disappearance of methylation changes observed in the sperm of the parental generation. These findings suggest that VPA-induced histone hyperacetylation may have brain function-related effects on the next generation through changes in sperm DNA methylation.
