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Prolonged pause during follicle growth contributes to offspring throughout reproductive lifespan

GSE272099 Mus musculus Expression profiling by high throughput sequencing 9 samples Submitted 2024/10/08 Platform GPL24247
Summary
Ovulation results from cyclical recruitment of quiescent oocytes for growth, hence the primordial follicles established during development comprise the lifelong reserve. In mouse fetal oocytes, we lineage traced a subset with earlier onset and slower progression through meiotic prophase using Sycp3CreERT2/+; Rosa26nT-nG/+ females. Initially GFP labeled first meiotic entrants survived at elevated rates and contributed to primordial follicles as well as the first wave of growing follicles in neonates. However, by puberty, only oocytes in the first wave of growing follicles remained. To identify the transcriptional signature of GFP+ oocytes in growing follicles, we performed Bulk RNA sequencing, which revealed remarkable similarity between the transcriptomes of GFP+ (first meiotic entrants) and RFP+ (the rest of the oocytes), with only 12 genes showing differential expression.
Published in
Sustained fertility from first-wave follicle oocytes that pause their growth
Soygur B, Gaylord EA, Foecke MH et al. · bioRxiv : the preprint server for biology 2024 · PMID 39253445 · doi:10.1101/2024.08.27.609995
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Also filed as BioProject PRJNA1135116 and SRA study SRP519548. Searching any of these in the dataset finder brings you back here.

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