Mitochondrial unfolding protein CLPX is required for oocyte competence during ovarian aging
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1202134 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| Other | ||||
| SRR31814209_1.fastq.gz | Fastqsanger.gz | |||
| SRR31814209_2.fastq.gz | Fastqsanger.gz | |||
| SRR31814210_1.fastq.gz | Fastqsanger.gz | |||
| SRR31814210_2.fastq.gz | Fastqsanger.gz |
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Project description:Ovarian aging has reproductive and overall health implications with increased infertility, miscarriage rates, and adverse outcomes associated with menopause. Mitochondrial dysfunction is one of the main mechanisms of female reproductive aging. Mitochondrial protein homeostasis maintains mitochondrial function and globally dysregulated unfolded mitochondrial protein response accelerates reproductive aging. However, the role of oocyte mitochondrial proteostasis in determining oocyte quality is unknown. ClpX (Caseinolytic Protease X) is a mitochondrial protein unfoldase that maintains mitochondrial protein homeostasis. In this study, we uncovered that Clpx deficiency, either through genetic ablation or natural decline with aging in mice, leads to the disrupted mitochondrial proteostasis in oocytes. Oocyte-specific knockout of Clpx impaired oocyte quality and developmental competence, thereby leading to female subfertility. Transcriptomic and micro-proteomic analyses of Clpx null oocytes revealed dysregulated mitochondrial function, protein processing and meiosis. Notably, Clpx deficiency promoted PGD2 synthesis and DP1/PKA/cAMP and DP2/AKT/mTOR signaling pathways by upregulating Ptgds. The PGD2 synthesis inhibitor AT-56 restored the developmental competence of Clpx knockout and aged oocytes. Our findings indicate the pivotal role of oocyte mitochondrial proteostasis in the regulation of oocyte quality with aging and pave the way for future investigations assessing the potential therapeutic value of these pathways to improve infertility treatment outcomes.
2025-04-01 | GSE285263 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE36602: Transcriptional profiling of somatic cells differentiation throughout oocyte competence acquisition in rainbow trout ovarian follicles. GSE36603: Transcriptional profiling of somatic cells differentiation throughout oocyte competence acquisition in the xenopus ovarian follicles. GSE36604: Transcriptional profiling of cumulus cells differentiation throughout oocyte competence acquisition in the murine ovarian follicles. GSE36605: Transcriptional profiling of cumulus cells differentiation throughout oocyte competence acquisition in the bovine ovarian follicles. Refer to individual Series
2012-10-14 | E-GEOD-36617 | biostudies-arrayexpress
Project description:CPEB3 Maintains Developmental Competence of the Oocyte
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Project description:Somatic cells surrounding the oocyte were sampled at the following stages: developmentally incompetent or poorly competent prophase I oocytes (NC1 oocytes), developmentally competent prophase I oocytes (C1 oocytes), and developmentally competent metaphase II oocytes (C2 oocytes). NC1 samples were collected from late vitellogenic females (LV), C1 samples from post-vitellogenic females (PV), and C2 samples from females undergoing meiotic maturation (Germinal Vesicle Breakdown) Global transcriptional profiling was performed using somatic cells collected from rainbow trout ovarian follicles during in vivo oocyte developmental competence acquisition. Somatic cells were collected at 3 stages of oogenesis: NC1 stage follicles (LV, late vitellogenic, prophase I arrested oocytes, meiotically incompetent and developmentally incompetent, n=6), C1 stage follicles (PV, post-vitellogenic, prophase I arrested oocytes, meiotically competent and developmentally competent, n=16). Ovulatory follicles were also collected during oocyte maturation after in vivo induction (metaphase II arrested oocytes, developmentally fully competent, n=6).
2012-10-14 | E-GEOD-36602 | biostudies-arrayexpress
Project description:The objective of this study was to identify the expression profile of miRNAs in porcine oocytes derived from follicles of different sizes using RNA high throughput sequencing technology. Oocytes were aspirated from large (3-6 mm) or small (<2 mm) ovarian follicles and tested for developmental competence and chromatin configurations. Small RNA libraries were constructed from both groups and then sequenced on an Illumina NextSeq500. Oocytes from large follicles showed higher developmental competence and different chromatin configuration compared to small oocyte group. In total, 167 and 162 known miRNAs were detected in large and small oocyte groups, respectively with 153 miRNAs were commonly expressed in both groups. In addition, 155 predicted novel miRNAs were detected and quantified. MiR-205, miR-16, miR-148a-3p, miR-125b, and let-7 family were among the top 10 highly abundantly expressed miRNAs in both oocyte groups. Further analysis showed that 8 miRNAs were differentially expressed (DE) between both groups (>2 fold change) with 4 up- and 4 down-regulated miRNAs in large compared to small oocyte group. Target gene prediction followed by KEGG pathway analysis revealed 46 pathways that were enriched with miRNA-target genes. Oocyte meiosis pathway and signaling pathways including FoxO, PI3K-Akt, TGFβ, and cAMP were predictably targeted by DE miRNAs. These results give more insights into the potential role of miRNAs in controlling oocyte developmental competence.
2019-02-13 | GSE122032 | GEO
Project description:Reproductive success begins with a healthy egg (a competent oocyte). An oocyte acquires its developmental competence during oogenesis in preparation for accomplishing the critical developmental transition from completion of meiosis to initiation of early embryogenesis. Here we comprehensively characterised the maternal role of major subunits of Hira (i.e. Hira, Cabin1 and Zscan4) during oocyte-to-embryo transition.
2022-02-01 | GSE146894 | GEO
Project description:Somatic cells surrounding the oocyte were sampled at the following stages: developmentally incompetent or poorly competent prophase I oocytes (NC1 oocytes), developmentally competent prophase I oocytes (C1 oocytes), and developmentally competent metaphase II oocytes (C2 oocytes). NC1 cumulus cells (CC) were sampled from immature calf oocytes, C1 samples from immature cow oocytes, and C2 samples from in vivo matured cow oocytes. Global transcriptional profiling was performed using cumulus cells collected from bovine ovarian follicles during in vivo oocyte developmental competence acquisition. Cumulus cells were collected at 3 stages: early stage follicles (prophase I arrested oocytes, meiotically competent but developmentally incompetent, n=6), late stage follicles (prophase I arrested oocytes, meiotically competent and developmentally competent, n=6) and ovulatory follicles collected by ovum pick-up (OPU) in vivo (metaphase II arrested oocytes, developmentally fully competent, n=5).
2012-10-14 | E-GEOD-36605 | biostudies-arrayexpress
Project description:Somatic cells surrounding the oocyte were sampled at the following stages: developmentally incompetent or poorly competent prophase I oocytes (NC1 oocytes), developmentally competent prophase I oocytes (C1 oocytes), and developmentally competent metaphase II oocytes (C2 oocytes). NC1 samples were collected from immature stage IV follicles, C1 samples from immature stage VI follicles, and C2 samples from in vitro matured stage VI follicles. Global transcriptional profiling was performed using somatic cells collected from xenopus ovarian follicles during in vivo oocyte developmental competence acquisition. Somatic cells were collected at 3 stages of oogenesis: early stage follicles (stage IV, vitellogenic, prophase I arrested oocytes, meiotically competent but developmentally incompetent, n=5), late stage follicles (stage VI, post-vitellogenic, prophase I arrested oocytes, meiotically competent and developmentally competent, n=5) and ovulatory follicles collected after in vitro maturation induction with hCG of post-vitellogenic follicles (metaphase II arrested oocytes, developmentally fully competent, n=5).
2012-10-14 | E-GEOD-36603 | biostudies-arrayexpress
Project description:Cumulus cells surrounding the oocyte were sampled at the following stages: developmentally incompetent or poorly competent prophase I oocytes (NC1 oocytes), developmentally competent prophase I oocytes (C1 oocytes), and developmentally competent metaphase II oocytes (C2 oocytes). NC1 samples were collected from immature, unexpanded cumulus-oocytes complexes (COC) from prepubertal (3-week-old) mice, C1 samples from immature, unexpanded cumulus-oocytes complexes (COC) from adult (8-week-old) and C2 samples from mature, expanded COCs obtained from the oviduct from 8-week-old mice after standard superovulation protocol. Global transcriptional profiling was performed using cumulus cells collected from murine ovarian follicles during in vivo oocyte developmental competence acquisition. Cumulus cells were collected at 3 stages: early stage follicles (prophase I arrested oocytes, meiotically competent but developmentally incompetent, n=5), late stage follicles (prophase I arrested oocytes, meiotically competent and developmentally competent, n=5) and ovulatory follicles collected in vivo (metaphase II arrested oocytes, developmentally fully competent, n=5).
2012-10-14 | E-GEOD-36604 | biostudies-arrayexpress
Project description:MiRNA expression profile in relation to oocyte developmental competence
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