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Transcriptome assay of maternal mRNA degradation in ERK-deleted oocytes

ABSTRACT: We analyzed the functions of ERK in maternal mRNA degradation in mouse oocytes. By comparing the degradation of transcripts in WT oocytes and KO oocytes, we are able to know the defects in maternal mRNA clearance in ERK-deleted oocytes, and identified the ERK target genes in oocyte maturation.

ORGANISM(S): Mus musculus

PROVIDER: GSE92317 | GEO | 2016/12/16

SECONDARY ACCESSION(S): PRJNA357208

REPOSITORIES: GEO

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Transcriptome assay of materal mRNA degradation in Btg4-deleted oocytes

Project description:We analyzed the functions of BTG family proteins in maternal mRNA degradation in mouse oocytes. By comparing the degradation of transcripts in WT oocytes and KO oocytes, we are able to know the defects in maternal mRNA clearance in BTG4-deleted oocytes, and identified the BTG4 target genes in oocyte cyplasmic maturation. 2 WT oocyte samples at GV stage, 2 WT oocyte samples at MII stage, 2 Btg4-/- oocyte samples at GV stage and 2 Btg4-/- oocyte samples at MII stage?2 WT embryo samples at zygote stage, 2 WT embryo samples at 2-cell stage, 2 Btg4-/- embryo samples at zygote stage and 2 Btg4-/- embryo samples at 2-cell stage , and a WT GV oocyte, a WT MII oocyte, a Erk-/- GV oocyte and a Erk-/- MII oocyte are performed RNA sequencing.

2016-03-16 | E-GEOD-71257 | biostudies-arrayexpress

Transcriptome assay of materal mRNA degradation in Btg4-deleted oocytes

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Erk regulated mRNA degradation

Project description:Erk regulated mRNA degradation

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Project description:After the library was qualified, the library was pooled according to the effective concentration and the demand of target offline data, and was sequenced by Illumina platform. Since PABPN1L can bind the poly(A) tail, we propose that it participates in the process of post-transcriptional regulation and degradation of maternal mRNA. We investigated the mRNA changes in GV oocytes, MII oocytes, and fertilized eggs using RNA-seq. GV oocytes, MII oocytes and zygotes were collected and mixed from three mice of each genotypes separately.

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RNA-seq of oocytes and zygotes from pabpn1l ko and wt female mice

Project description:PABPN1L participates in the process of post-transcriptional regulation and degradation of maternal mRNA.We collect samples of each period from pabpn1l ko and wt female mice during different stages. Each group contained a total of 30 oocytes or zygotes. In the initial step, we spiked 2 × 106 mRNA-EGFP, transcribed in vitro, into each group.Then, RNA was extracted and detected.Reverse transcription was performed on the samples that met the effective concentration.After quality inspection, build the library.GV oocytes, MII oocytes and zygotes were collected from three different PABPN1L KO or WT mice seperately.

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Erk regulated mRNA degradation

Project description:Transcriptome analysis of ESCs treated with a transcription inhibitor, with our without ERK activity to measure Erk-dependent changes in mRNA degradation

2019-08-08 | GSE110664 | GEO

Cordycepin Delays Postovulatory Aging of Mammalian Oocytes through Inhibition of Maternal mRNAs Degradation via DCP1A Polyadenylation Suppression

Project description:Postovulatory aging leads to the decline in oocyte quality and subsequent impairment of embryonic development, thereby reducing the success rates of assisted reproductive technology (ART). Nevertheless, potential preventative strategies to improve aging oocytes quality and the associated underlying mechanisms warrant further investigation. In this study, we identify cordycepin, an natural nucleoside analogue, as having the potential to restore the postovulatory aging-induced decline in oocyte quality, including aspects such as oocyte fragmentation, embryonic developmental competence, spindle/chromosomes morphology and mitochondrial function. Proteomic and RNA sequencing analyses revealed that cordycepin inhibited the degradation of several crucial maternal proteins and mRNAs caused by aging. Mechanistically, cordycepin was found to suppress the elevation of DCP1A protein levels by inhibiting polyadenylation during postovulatory aging, consequently impeding the decapping of maternal mRNAs. In humans, the increased degradation of DCP1A and total mRNA during aging was also inhibited by cordycepin. Collectively, our findings demonstrate that cordycepin may prevent postovulatory aging of mammalian oocytes by inhibition of maternal mRNAs degradation via DCP1A polyadenylation suppression, thereby promoting the successful rates of ART procedure.

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