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. 2024 May 28;14(11):1594.
doi: 10.3390/ani14111594.

Effects of Low and High Maternal Protein Intake on Fetal Skeletal Muscle miRNAome in Sheep

Bilal Akyüz  1 , Md Mahmodul Hasan Sohel  1   2 , Yusuf Konca  3 , Korhan Arslan  1 , Kutlay Gürbulak  4 , Murat Abay  4 , Mahmut Kaliber  3 , Stephen N White  5 , Mehmet Ulas Cinar  3   5
Affiliations

Effects of Low and High Maternal Protein Intake on Fetal Skeletal Muscle miRNAome in Sheep

Bilal Akyüz et al. Animals (Basel). .

Abstract

Prenatal maternal feeding plays an important role in fetal development and has the potential to induce long-lasting epigenetic modifications. MicroRNAs (miRNAs) are non-coding, single-stranded RNAs that serve as one epigenetic mechanism. Though miRNAs have crucial roles in fetal programming, growth, and development, there is limited data regarding the maternal diet and miRNA expression in sheep. Therefore, we analyzed high and low maternal dietary protein for miRNA expression in fetal longissimus dorsi. Pregnant ewes were fed an isoenergetic high-protein (HP, 160-270 g/day), low-protein (LP, 73-112 g/day), or standard-protein diet (SP, 119-198 g/day) during pregnancy. miRNA expression profiles were evaluated using the Affymetrix GeneChip miRNA 4.0 Array. Twelve up-regulated, differentially expressed miRNAs (DE miRNAs) were identified which are targeting 65 genes. The oar-3957-5p miRNA was highly up-regulated in the LP and SP compared to the HP. Previous transcriptome analysis identified that integrin and non-receptor protein tyrosine phosphatase genes targeted by miRNAs were detected in the current experiment. A total of 28 GO terms and 10 pathway-based gene sets were significantly (padj < 0.05) enriched in the target genes. Most genes targeted by the identified miRNAs are involved in immune and muscle disease pathways. Our study demonstrated that dietary protein intake during pregnancy affected fetal skeletal muscle epigenetics via miRNA expression.

Keywords: Ovis aries; dietary protein; gestation; nutrimiromics; prenatal life.

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Conflict of interest statement

The authors declare no conflicts of interest.

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