Transcriptomics

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Translatome of aged mouse NEBD – stage oocytes determined using a new polysomal profiling method


ABSTRACT: We provide complete translatome of mouse oocytes from aged females after the breakdown of nuclear envelope (NEBD). RNAseq of polysomal and non-polysomal RNA was determined by using a novel approach combining polysomal fractionation of 200 NEBD-staged oocytes in small SW55Ti centrifugation tubes in the absence of any external spike and qRT-PCR analysis of ribosomal RNA in collected fractions. We compared these data to the translatome of same stage oocytes from young females (GSE121358). We report that genome-wide translatome profiling reveals considerable numbers of transcripts that are differentially translated in oocytes obtained from aged compared to young females. Additionally, we show the majority of aberrantly translated mRNAs in older oocytes have roles associated with cell cycle regulation. Indeed, we demonstrate the differential translation rates of four specific maternal age related transcripts (Sgk1, Castor1, Aire and Eg5) are associated with distinct localization patterns around the newly forming meiotic spindle.

ORGANISM(S): Mus musculus

PROVIDER: GSE151836 | GEO | 2021/01/01

REPOSITORIES: GEO

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