Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA122039 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Small RNAs play important roles in early embryonic development. However, their expression dynamics and modifications are poorly understood because of the scarcity of RNA that is obtainable for sequencing analysis. Using an improved deep sequencing method that requires as little as 10 ng of total RNA or 50 oocytes, we profile small RNAs in mouse oocytes and early embryos. We find that microRNA (miRNA) expression starts soon after fertilization, and the mature miRNAs carried into the zygote by sperm during fertilization are relatively rare compared to the oocyte miRNAs. Intriguingly, the zygotic miRNAs display a marked increase in 3â² mono- and oligoadenylation in one- to two-cell embryos, which may protect the miRNAs from the massive degradation taking place during that time. Moreover, bioinformatics analyses show that the function of miRNA is suppressed from the oocyte to the two-cell stage and appears to be reactivated after the two-cell stage to regulate genes important in embryonic development. Our study thus provides a highly sensitive profiling method and valuable data sets for further examination of small RNAs in early embryos. Investigate small RNAs in the mouse oocyte and early embryo development, evaluate the reproducibility and sensitivity of the improved method in HEK293 cell lines. The SRA Study accession is SRP045287 , and The BioProject accession is PRJNA257532.
2016-06-23 | E-GEOD-83581 | biostudies-arrayexpress
Project description:Small RNAs play important roles in early embryonic development. However, their expression dynamics and modifications are poorly understood because of the scarcity of RNA that is obtainable for sequencing analysis. Using an improved deep sequencing method that requires as little as 10 ng of total RNA or 50 oocytes, we profile small RNAs in mouse oocytes and early embryos. We find that microRNA (miRNA) expression starts soon after fertilization, and the mature miRNAs carried into the zygote by sperm during fertilization are relatively rare compared to the oocyte miRNAs. Intriguingly, the zygotic miRNAs display a marked increase in 3′ mono- and oligoadenylation in one- to two-cell embryos, which may protect the miRNAs from the massive degradation taking place during that time. Moreover, bioinformatics analyses show that the function of miRNA is suppressed from the oocyte to the two-cell stage and appears to be reactivated after the two-cell stage to regulate genes important in embryonic development. Our study thus provides a highly sensitive profiling method and valuable data sets for further examination of small RNAs in early embryos.
2016-06-23 | GSE83581 | GEO
Project description:Polycomb function during oogenesis is required for mouse early embryonic development (germinal vesicle oocytes)
| PRJNA142697 | ENA
Project description:PURPOSE: To provide a detailed gene expression profile of the normal postnatal mouse cornea. METHODS: Serial analysis of gene expression (SAGE) was performed on postnatal day (PN)9 and adult mouse (6 week) total corneas. The expression of selected genes was analyzed by in situ hybridization. RESULTS: A total of 64,272 PN9 and 62,206 adult tags were sequenced. Mouse corneal transcriptomes are composed of at least 19,544 and 18,509 unique mRNAs, respectively. One third of the unique tags were expressed at both stages, whereas a third was identified exclusively in PN9 or adult corneas. Three hundred thirty-four PN9 and 339 adult tags were enriched more than fivefold over other published nonocular libraries. Abundant transcripts were associated with metabolic functions, redox activities, and barrier integrity. Three members of the Ly-6/uPAR family whose functions are unknown in the cornea constitute more than 1% of the total mRNA. Aquaporin 5, epithelial membrane protein and glutathione-S-transferase (GST) omega-1, and GST alpha-4 mRNAs were preferentially expressed in distinct corneal epithelial layers, providing new markers for stratification. More than 200 tags were differentially expressed, of which 25 mediate transcription. CONCLUSIONS: In addition to providing a detailed profile of expressed genes in the PN9 and mature mouse cornea, the present SAGE data demonstrate dynamic changes in gene expression after eye opening and provide new probes for exploring corneal epithelial cell stratification, development, and function and for exploring the intricate relationship between programmed and environmentally induced gene expression in the cornea. Keywords: other
2004-01-02 | GSE887 | GEO
Project description: Not available
| S-EPMC8784167 | biostudies-literature
Project description:Polycomb function during oogenesis is required for mouse early embryonic development (2-cell embryos)
| PRJNA143059 | ENA
Project description:This SuperSeries is composed of the following subset Series: GSE23033: Polycomb function during oogenesis is required for mouse early embryonic development (germinal vesicle oocytes) GSE28710: Polycomb function during oogenesis is required for mouse early embryonic development (2-cell embryos) Refer to individual Series
2012-05-06 | E-GEOD-28711 | biostudies-arrayexpress
Project description:To investigate the differences in microRNA expression profiles between fibrotic and normal livers, we performed microRNA microarrays for total RNA extracts isolated from mouse livers treated with carbontetrachloride (CCl4) or corn-oil for 10 weeks (n=3/group). MicroRNAs were considered to have significant differences in expression level when the expression difference showed more than two-fold change between the experimental and control groups at p<0.05. We found that 12 miRNAs were differentially expressed in CCl4-induced fibrotic liver.
2016-03-22 | GSE77271 | GEO
Project description:Identification of genes expressed in oocytes and conserved in three different species with a multi-species cDNA microarray.
2006-01-31 | E-MEXP-488 | biostudies-arrayexpress