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Transcriptome-wide m6A profiling reveals mRNA post-transcriptional modification of boar sperm during cryopreservation

ABSTRACT: Transcriptome-wide m6A profiling reveals mRNA post-transcriptional modification of boar sperm during cryopreservation

PROVIDER: PRJNA691566 | ENA |

REPOSITORIES: ENA

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Transcriptome-wide m6A profiling reveals mRNA post-transcriptional modification of boar sperm during cryopreservation

Project description:In present study, we first tried to reveal the transcriptome-wide m6A methylation pattern in boar fresh sperm (Fs) and frozen-thawed sperm (Fts) through MeRIP-seq, which demonstrates occurrence the diverse m6A modiﬁcation patterns during cryopreservation. Results: the expression of m6A modification enzymes were significantly dysregulated in sperm during cryopreservation. Furthermore, the m6A peaks were mainly enriched in coding regions and near stop codons with classical RRACH motifs. In Fts, a total of 1754 differentially methylated m6A genes containing 1928 differentially methylated peaks were identified as compared to Fs. Bioinformatics analysis revealed the role of these genes containing significantly altered m6A peaks (DMMGs) were significantly enriched in terms of metabolism and transcription, as well as a number of DMMGs were annotated to ubiquitin mediated proteolysis, AMPK, mTOR and MAPK signaling pathways. Furthermore, the joint analysis of DMMGs and differentially expressed genes indicated that both of these play a vital role in sperm energy metabolism and apoptosis. Conclusion: Our study is first to reveal the dynamic m6A modification in mRNAs of boar sperm during cryopreservation, and provides a new evidence regarding the potential roles of m6A in modulating sperm motility, apoptosis and metabolism. Keywords: N6-methyladenosine (m6A); Boar sperm; Cryopreservation; MeRIP-seq

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Project description:Our study demonstrated that the expression of Igf2bp1 in activated microglia was significantly up-regulated, implying a role of Igf2bp1 in LPS-induced m6A modifications in microglia. To understand the roles of Igf2bp1 on LPS-induced m6A modification in microglia, we performed Igf2bp1 loss-of-function (LOF) approach. Microglia stimulated by LPS were transfected with either scrambled siRNA control or Igf2bp1 siRNA for 48 hours. To m6A modification profiles in control and Igf2bp1 LOF microglia were determined by MeRIP-seq analysis.

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Project description:Identification of MicroRNAs Expressed in Porcine Sperm Cells. Commerical boar sperm samples were used.

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