数字农科院2.0

An Insight into Differentially Expressed Genes and MicroRNAs in the Pituitary Glands of the Two Estrous Phases of Sheep with Different FecB Genotypes

文献类型： 外文期刊

作者： Yue Zhang;Xiaoyun He;Ran Di;Xiangyu Wang;Mingxing Chu

作者机构：

关键词： FecB mutation;miRNA-seq;pituitary gland;small tail han sheep

期刊名称： Animals

ISSN： 2076-2615

年卷期： 2025 年 15 卷 3 期

页码：

收录情况： SCIE（2025版）

摘要： As an important class of non-coding RNAs, miRNAs participate in a variety of biological processes, including cell proliferation, differentiation, apoptosis, and hormone secretion. However, little is known about the role of pituitary miRNAs in follicular development in FecB mutant (Fecundity Booroola) sheep. Given the critical role of the pituitary gland in follicular development, this study employed miRNA-seq technology to analyze pituitary transcriptome expression patterns during the follicular phase (F) and the luteal phase (L) of FecB mutant homozygous (BB) and wild-type (WW) of Small Tail Han sheep. This study identified differentially expressed miRNAs (DEMs) related to re-production. Of these, 10, 4, 10, and 4 were differentially expressed (DE) between BB_F and BB_L, WW_F and WW_L, BB_F and WW_F, and BB_L and WW_L, respectively. Bioinformatics analysis revealed the enrichment of the target genes of these DEMs in multiple GO terms linked to animal re-productive processes and KEGG signaling pathways. The follicular phase and luteal phase show significant enrichment in multiple pathways closely related to cell communication and signal transduction, including the MAPK signaling pathway, neuroactive ligand–receptor interaction, and the cAMP signaling pathway. In comparisons of genotypes, the calcium signaling pathway, the cAMP signaling pathway, and the MAPK signaling pathway are enriched. The miRNA-mRNA co-expression network indicates that novel121 and oar-miR-10b may regulate CUL4B and ZFAND5, respectively, playing crucial roles in sheep reproduction. Dual luciferase reporter gene assays hinted at a potential targeting relationship between novel-121 and DNMT3A. These findings elucidate the impact of pituitary miRNAs on follicular development influenced by FecB gene mutation, providing valuable insights into sheep breeding.

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