Exploring testicular miRNA profiles during developmental stages in Dezhou donkeys: A preliminary insight
文献类型： 外文期刊
第一作者： Ahmed, Zulfiqar
作者： Ahmed, Zulfiqar;Liu, Wei;Wang, Xijun;Ahmed, Zulfiqar;Ahmad, Imtiaz;Ahmed, Imran;Yu, Jie;Dong, Hong;Naseer, Zahid
作者机构：
关键词： Dezhou donkeys; genes; MicroRNA; spermatogenesis; testicular development
期刊名称：REPRODUCTION IN DOMESTIC ANIMALS （ 影响因子：1.7； 五年影响因子：1.9 ）
ISSN： 0936-6768
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Testicular development and spermatogenesis are complex phenomena controlled by various genetic factors, including miRNA-based post-transcriptional gene expression regulation. Exploring the miRNA expression patterns during testicular development in Dezhou donkeys would enhance our understanding of equine fertility and spermatogenesis. In this investigation, we examined the testicular miRNA profiles at various stages of development. The experimental animals were divided into three groups based on their developmental stages: 2 months old (juvenile: n = 3), 12 months old (adolescent; n = 3) and 24 months old (adult; n = 3) donkeys. Total RNA was extracted from dissected testicles for miRNA sequencing and analysis. In total, 586 miRNAs, including 451 known miRNAs and 135 novel miRNAs, were identified. Among identified miRNAs, 315 displayed age-dependent expression differences. The levels of miRNA expression in the juvenile group were significantly higher than in the adolescent or adult groups. The MiR-483 exhibited the maximum fold change between juvenile and adolescent groups. Several screened genes, including SLC45A4 and TFCP2L1, have been linked to male reproductive pathways in donkeys. In addition, miR-744 was predicted to regulate SPIN2B, a gene implicated in spermatocyte cell cycle progression and genomic integrity of spermatozoa. These results contribute to our comprehension of microRNA regulation during testicular development and spermatogenesis in Dezhou donkeys. The identified microRNAs and their target genes have the potential to serve as biomarkers for evaluating the reproductive capacity of stud donkeys.
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