Transcriptomics

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DOT1L deletion impairs the development of cortical Parvalbumin-expressing interneurons


ABSTRACT: Our group has reported that the histone methyltransferase DOT1L is necessary for proper cortical plate development and layer distribution of glutamatergic neurons, however, its specific role on cortical interneuron development has not yet been explored. Here, we demonstrate that DOT1L affects interneuron development in a cell-autonomous manner. Deletion of Dot1l in MGE-derived interneuron precursor cells results in an overall reduction and altered distribution of GABAergic interneurons in the cortical plate at postnatal day (P) 0. Furthermore, we observed an altered proportion of GABAergic interneurons in the cortex and striatum at P21 with a significant decrease in Parvalbumin (PVALB)-expressing interneurons. Altogether, our results indicate that reduced numbers of cortical interneurons upon DOT1L deletion results from altered postmitotic differentiation/maturation.

ORGANISM(S): Mus musculus

PROVIDER: GSE221994 | GEO | 2023/08/01

REPOSITORIES: GEO

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