The chromatin accessibility landscape of mouse oocytes during configuration transition
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1089931 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR28394661_1.fastq.gz | Fastqsanger.gz | |||
| SRR28394661_2.fastq.gz | Fastqsanger.gz | |||
| SRR28394662_1.fastq.gz | Fastqsanger.gz | |||
| SRR28394662_2.fastq.gz | Fastqsanger.gz | |||
| SRR28394663_1.fastq.gz | Fastqsanger.gz |
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Project description:The transition of chromatin configuration in mammalian oocytes from a non-surrounded nucleolus (NSN) to a surrounded nucleolus (SN) is critical for acquiring the developmental competence. However, the genomic and epigenomic features underlying this process remain poorly understood. In the present study, we first establish the chromatin accessibility landscape of mouse oocyte from NSN to SN stage. Through the integrative analysis of multi-omics, we find that establishment of DNA methylation in oocytes is independent on the dynamics of chromatin accessibility. In contrast, histone H3K4me3 status is closely associated with the dynamics of accessible-regions during configuration transition. Furthermore, by focusing on the actively transcribed genes in NSN and SN oocytes, we discover that chromatin accessibility coupled with histone methylation (H3K4me3 and H3K27me3) participates in the transcriptional control during phase transition. In sum, our data serve as a broad resource for probing configuration transition in oocytes, and provide the potential evidence to elucidate the mechanism determining chromatin dynamics and oocyte quality.
2025-01-08 | GSE261972 | GEO
Project description:The transition of chromatin configuration in mammalian oocytes from a non-surrounded nucleolus (NSN) to a surrounded nucleolus (SN) is critical for acquiring the developmental competence. However, the genomic and epigenomic features underlying this process remain poorly understood. In the present study, we first establish the chromatin accessibility landscape of mouse oocyte from NSN to SN stage. Through the integrative analysis of multi-omics, we find that establishment of DNA methylation in oocytes is independent on the dynamics of chromatin accessibility. In contrast, histone H3K4me3 status is closely associated with the dynamics of accessible-regions during configuration transition. Furthermore, by focusing on the actively transcribed genes in NSN and SN oocytes, we discover that chromatin accessibility coupled with histone methylation (H3K4me3 and H3K27me3) participates in the transcriptional control during phase transition. In sum, our data serve as a broad resource for probing configuration transition in oocytes, and provide the potential evidence to elucidate the mechanism determining chromatin dynamics and oocyte quality.
2025-01-08 | GSE262265 | GEO
Project description:The transition of chromatin configuration in mammalian oocytes from a non-surrounded nucleolus (NSN) to a surrounded nucleolus (SN) is critical for acquiring the developmental competence. However, the genomic and epigenomic features underlying this process remain poorly understood. In the present study, we first establish the chromatin accessibility landscape of mouse oocyte from NSN to SN stage. Through the integrative analysis of multi-omics, we find that establishment of DNA methylation in oocytes is independent on the dynamics of chromatin accessibility. In contrast, histone H3K4me3 status is closely associated with the dynamics of accessible-regions during configuration transition. Furthermore, by focusing on the actively transcribed genes in NSN and SN oocytes, we discover that chromatin accessibility coupled with histone methylation (H3K4me3 and H3K27me3) participates in the transcriptional control during phase transition. In sum, our data serve as a broad resource for probing configuration transition in oocytes, and provide the potential evidence to elucidate the mechanism determining chromatin dynamics and oocyte quality.
2025-01-08 | GSE262346 | GEO
Project description:The transition of chromatin configuration in mammalian oocytes from a non-surrounded nucleolus (NSN) to a surrounded nucleolus (SN) is critical for acquiring the developmental competence. However, the genomic and epigenomic features underlying this process remain poorly understood. In the present study, we first establish the chromatin accessibility landscape of mouse oocyte from NSN to SN stage. Through the integrative analysis of multi-omics, we find that establishment of DNA methylation in oocytes is independent on the dynamics of chromatin accessibility. In contrast, histone H3K4me3 status is closely associated with the dynamics of accessible-regions during configuration transition. Furthermore, by focusing on the actively transcribed genes in NSN and SN oocytes, we discover that chromatin accessibility coupled with histone methylation (H3K4me3 and H3K27me3) participates in the transcriptional control during phase transition. In sum, our data serve as a broad resource for probing configuration transition in oocytes, and provide the potential evidence to elucidate the mechanism determining chromatin dynamics and oocyte quality.
2025-01-08 | GSE262263 | GEO
Project description:The chromatin accessibility landscape of mouse oocytes during configuration transition (CUT&Tag)
| PRJNA1090928 | ENA
Project description:The chromatin accessibility landscape of mouse oocytes during configuration transition (RNA-Seq)
| PRJNA1090930 | ENA
Project description:The chromatin accessibility landscape of mouse oocytes during configuration transition [BS-seq]
| PRJNA1091378 | ENA
Project description:The transition of chromatin configuration in mammalian oocytes from a non-surrounded nucleolus (NSN) to a surrounded nucleolus (SN) is critical for acquiring the developmental competence. However, the genomic and epigenomic features underlying this process remain poorly understood. In the present study, we first establish the chromatin accessibility landscape of mouse oocytes from NSN to SN stage. Through the integrative analysis of multi-omics, we find that the establishment of DNA methylation in oocytes is independent of the dynamics of chromatin accessibility. In contrast, histone H3K4me3 status is closely associated with the dynamics of accessible regions during configuration transition. Furthermore, by focusing on the actively transcribed genes in NSN and SN oocytes, we discover that chromatin accessibility coupled with histone methylation (H3K4me3 and H3K27me3) participates in the transcriptional control during phase transition. In sum, our data provide a comprehensive resource for probing configuration transition in oocytes, and offer insights into the mechanisms determining chromatin dynamics and oocyte quality.
| S-EPMC11693577 | biostudies-literature
Project description:During mammalian oocyte growth, chromatin configuration transition from the nonsurrounded nucleolus (NSN) to surrounded nucleolus (SN) type plays a key role in the regulation of gene expression and in acquisition of meiotic and developmental competence by the oocyte. Nonetheless, the mechanism underlying chromatin configuration maturation in oocytes is poorly understood. Here we show that nucleolar protein DCAF13 is an important component of the ribosomal RNA (rRNA)-processing complex and is essential for oocyte NSN–SN transition in mice. A conditional knockout of Dcaf13 in oocytes led to the arrest of oocyte development in the NSN configuration, follicular atresia, premature ovarian failure, and female sterility. The DCAF13 deficiency resulted in pre-rRNA accumulation in oocytes, whereas the total mRNA level was not altered. Further exploration showed that DCAF13 participated in the 18S rRNA processing in growing oocytes. The lack of 18S rRNA because of DCAF13 deletion caused a ribosome assembly disorder and then reduced global protein synthesis. DCAF13 interacted with a protein of the core box C/D ribonucleoprotein, fibrillarin, i.e., a factor of early pre-rRNA processing. When fibrillarin was knocked down in oocytes from primary follicles, the follicle development was inhibited as well, indicating that an rRNA processing defect in the oocyte indeed stunts chromatin configuration transition and follicle development. Taken together, these results elucidated the in vivo function of novel nucleolar protein DCAF13 in maintaining mammalian oogenesis.
2019-01-01 | GSE114967 | GEO
Project description:The maternal to zygote transition in mammals has been an area of intensive research over the past few decades, with an ever-changing landscape of understanding that has accompanied the rapid development of cell-profiling technology. Utilizing a full-length single cell RNA-seq protocol, we profiled mature oocytes and zygotes of mice and rats to uncover elusive transcriptomic dynamics during the maternal to zygote transition. We confirm the existence of early gene expression in the mouse zygote while revealing a similar chain of events occurring in the rat zygote. We observe an increase in nascent transcription in both species. Moreover, we find subtle but pervasive signals of differential splicing of genes related to key early zygotic activities occurring in both species. Meanwhile, we find distinct profiles of alternative polyadenylation between zygotes and oocytes in both species, particularly, in genes related to major processes within the zygotes. Finally, although a more dynamic transcriptomic landscape exists in the mouse zygote, the rat zygote also displays similar transcriptomic features, suggesting that minor zygotic activation in rat occurs earlier than originally thought.
2025-01-23 | GSE287856 | GEO