数字农科院2.0

Characteristic analysis of N6-methyladenine in different parts of yak epididymis

文献类型： 外文期刊

作者： Ziqiang Ding;Xingdong Wang;Shaoke Guo;Yandong Kang;Mengli Cao;Liyan Hu;Ben Zhang;Lin Xiong;Jie Pei;Tao Yang;Xian Guo

作者机构：

关键词： Epididymis;N6-Methyladenosine;Reproductive physiology;Sperm maturation;Yak

期刊名称： BMC Genomics

ISSN： 1471-2164

年卷期： 2025 年 26 卷 1 期

页码：

收录情况： SCIE（2025版）

摘要： Background: The epididymis is essential for sperm maturation. During sperm maturation, markable alterations of the payload of small noncoding RNAs are observed in the epididymis, which indicated the role of epigenetic alterations in sperm maturation. However, the N6-Methyladenosine (m6A) modification profile of the epididymis remains unelucidated. Therefore, in this study, we assessed the m6A modification levels in the caput, corpus, and cauda of the yak epididymis using a combination of methylated RNA immunoprecipitation and RNA sequencing. Results: The m6A levels were significantly increased in the corpus of the epididymis. Functional enrichment analysis of differentially methylated RNA (DMR) between the corpus and caput group revealed the significant enrichment of DMRs in the gap junction, ErbB signaling pathway, and mTOR signaling pathway, which participate in cell communication and sperm maturation. In addition, the DMRs of cauda-vs-corpus group were enriched in apoptosis, the FoxO signaling pathway, the PI3K-Akt signaling pathway, and the tumor necrosis factor signaling pathway that were associated with sperm autophagy, oxidative stress, and sperm maturation. Furthermore, we identified the key genes exhibiting significant changes in m6A levels but with no differences in RNA levels, including YY1-associated factor 2, forkhead box J2, and forkhead box O1. This finding indicated that m6A modifications affect these genes during translation, thereby participating in sperm maturation. Conclusions: In summary, we generated the m6A profile of the yak epididymis, which will aid in further elucidating the maturation process of sperm and reveal more information related to male infertility.

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