SETD1B controls cognitive function via cell type specific regulation of neuronal identity genes
Fischer, A.; Michurina, A.; Sakib, M. S.; Kerimoglu, C.; Krüger, D. M.; Kaurani, L.; Islam, R.; Centeno, T. P.; Cha, J.; Xu, X.; Zeisberg, E.; Kranz, A.; Stewart, F.
Show abstract
Histone-3-lysine-4-methylation (H3K4me) is mediated by six different lysine methyltransferases (KMTs). Amongst these enzymes SET domain containing 1b (SETD1B) has been linked to intellectual disability but its role in the adult brain has not been studied yet. Here we show that mice lacking Setd1b from excitatory neurons of the adult forebrain exhibit severe memory impairment. By combining neuron-specific ChIP-seq, RNA-seq and single cell RNA-seq approaches we show that Setd1b controls the expression of neuronal-identity genes with a broad H3K4me3 peak linked to learning and memory processes. Our data furthermore suggest that basal neuronal gene-expression is ensured by other H3K4 KMTs such as Kmt2a and Kmt2b while the additional presence of Setd1b at the single cell level provides transcriptional consistency to the expression of genes important for learning & memory.
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