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Identification and quantification of coding and long non-coding RNAs in stallion spermatozoa separated by density
Nancy H Ing1, Kranti Konganti2, Noushin Ghaffari3,4
1Department of Animal Science, Texas A&M University, College Station, TX, USA.
Andrology
|April 4, 2020
Summary
Researchers identified 11,215 RNAs in stallion spermatozoa, with 166 showing differential expression between dense and less dense sperm fractions. This discovery could identify optimal RNA profiles for successful stallion pregnancies.
Area of Science:
- Reproductive Biology
- Spermatozoa Research
- Molecular Biology
Background:
- Stallion fertility issues are common, impacting artificial insemination success.
- Denser spermatozoa fractions often yield higher pregnancy rates.
- Spermatozoa-borne RNAs are crucial for early embryo development.
Purpose of the Study:
- To characterize and compare RNA content in dense versus less dense stallion spermatozoa.
- To identify potential RNA biomarkers for stallion fertility.
Main Methods:
- Spermatozoa separation using density gradient centrifugation.
- Next-generation sequencing for RNA profiling.
- Quantitative reverse transcription-PCR for validation.
Main Results:
- Identified 11,215 distinct RNAs in stallion spermatozoa.
- Found 166 RNAs with differential expression between sperm fractions.
- Confirmed higher levels of specific mRNAs (SLC26A8, SCP2D1, SPATA31D1) in distinct fractions.
Conclusions:
- Significant differences in RNA populations exist between stallion sperm fractions.
- These differentially expressed RNAs may be key to successful fertilization and embryo development.
- Findings pave the way for novel fertility prediction assays in stallions.
