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Multiplexed Single Cell mRNA Sequencing Analysis of Mouse Embryonic Cells
Published on: January 7, 2020
MicroRNA transcriptome in the newborn mouse ovaries determined by massive parallel sequencing.
Hyo Won Ahn1, Ryan D Morin, Han Zhao
1Department of Obstetrics, Gynecology and Reproductive Sciences, Magee-Womens Research Institute, University of Pittsburgh, Pittsburgh, PA, USA.
Molecular Human Reproduction
|March 11, 2010
Summary
This study identifies microRNAs (miRNAs) in newborn mouse ovaries, revealing novel gonad-specific miRNAs. These findings suggest important roles for miRNAs in ovarian development and female fertility.
Area of Science:
- Reproductive Biology
- Molecular Biology
- Genomics
Background:
- Small non-coding RNAs, including microRNAs (miRNAs), regulate crucial biological processes like organ development and tissue differentiation.
- Global disruption of miRNA biogenesis affects early embryogenesis and germ cell formation, but their role in early folliculogenesis remains unclear.
Purpose of the Study:
- To identify the complete set of small RNAs expressed in the newborn mouse ovary.
- To investigate the role of microRNAs in early ovarian development and folliculogenesis.
Main Methods:
- Small RNA fractions were extracted from newborn mouse ovaries.
- Massive parallel sequencing was performed using Illumina Genome Analyzer.
- Sequence reads were mapped to the mouse genome and annotated for known small RNA types (miRNAs, snoRNAs, piRNAs) and genomic repeats.
Main Results:
- Sequencing generated over 4.6 million reads, with 50.13% mapping to the mouse genome.
- 25.2% of reads mapped to known miRNAs, including 398 species and 118 novel isomiRs.
- The Let-7 family was the most abundant miRNA; X-linked miRNAs (mmu-mir-503, mmu-mir-672, mmu-mir-465) showed preferential expression in gonads. Four novel gonad-specific miRNAs were identified.
Conclusions:
- The newborn mouse ovary expresses a diverse range of small RNAs, including numerous miRNAs.
- Novel and X-linked miRNAs are preferentially expressed in gonads, suggesting critical roles in ovarian development, folliculogenesis, and female fertility.
