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Single-Cell Transcriptome Analysis of Rb1 Conditional Knockout Prospermatogonia

ABSTRACT: Prospermatogonia, precursors to the mature male germline, undergo a period of sustained quiescence during late fetal and early postnatal development. The purpose of this mitotic arrest is not fully understood. Therefore, utilizing conditional ablation of retinoblastoma protein 1 (Rb1) in mice which blocks entry into quiescence, we analyzed prospermatogonia at the cusp of mitotic arrest at embryonic day 14.5. Prospermatogonia from heterozygous controls or conditional knockout males were isolated via fluorescence-activated cell sorting and profiled via single-cell RNA-sequencing (scRNA-seq). Outcomes of scRNA-seq analysis revealed that a metabolic shift to oxidative phosphorylation and meiotic inhibition are disrupted in prospermatogonia that fail to initiate quiescence. Collectively, these findings and others suggest that biosensing mechanisms eliminate prospermatogonia that fail to mitotically arrest and that key layers of programming are applied during quiescence to ensure proper fate specification.

ORGANISM(S): Mus musculus

PROVIDER: GSE149223 | GEO | 2021/04/27

REPOSITORIES: GEO

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