RT Journal Article SR Electronic T1 Inter and transgenerational impact of H3K4 methylation in neuronal homeostasis JF Life Science Alliance JO Life Sci. Alliance FD Life Science Alliance LLC SP e202301970 DO 10.26508/lsa.202301970 VO 6 IS 8 A1 Steffen Abay-Nørgaard A1 Marta Cecylia Tapia A1 Mandoh Zeijdner A1 Jeonghwan Henry Kim A1 Kyoung Jae Won A1 Bo Porse A1 Anna Elisabetta Salcini YR 2023 UL https://www.life-science-alliance.org/content/6/8/e202301970.abstract AB Epigenetic marks and associated traits can be transmitted for one or more generations, phenomena known respectively as inter- or transgenerational epigenetic inheritance. It remains unknown if genetically and conditionally induced aberrant epigenetic states can influence the development of the nervous system across generations. Here, we show, using Caenorhabditis elegans as a model system, that alteration of H3K4me3 levels in the parental generation, caused by genetic manipulation or changes in parental conditions, has, respectively, trans- and intergenerational effects on H3K4 methylome, transcriptome, and nervous system development. Thus, our study reveals the relevance of H3K4me3 transmission and maintenance in preventing long-lasting deleterious effects in nervous system homeostasis.