ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2019, Vol. 50 ›› Issue (3): 551-561.doi: 10.11843/j.issn.0366-6964.2019.03.010

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Identification and Analysis of Long Non-coding RNA Associated with Cattle-yak Male Infertility

A GUO Yueda, XIONG Xianrong*, WANG Yan, YANG Xianying, HAN Jie, WANG Bin, LI Jian*   

  1. Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Exploitation of Ministry of Education, College of Life Science and Technology, Southwest Minzu University, Chengdu 610041, China
  • Received:2018-07-16 Online:2019-03-23 Published:2019-03-23

Abstract:

The objective of this study was to explore the link between lncRNAs and the mechanism of male infertility of cattle-yak by analyzing the gene expression profile about lncRNA in testis tissue of adult healthy yak and cattle-yak (3-4 years old). This study provided the base for further interpreting the mechanism of male infertility of cattle-yak.Testis tissues of 3 adult healthy yaks and 3 adult healthy cattle-yaks were collected to construct the cDNA libraries. And, the structure and function of genes were analyzed by using high-throughput sequencing and differentially expressed lncRNAs (DElncRNAs) were screened between yak and cattle-yak. Then the cis-targeted and tran-targeted genes of DElncRNAs were predicted by exploring the positional relation and binding energy between lncRNA and mRNA, and the GO and KEGG pathway enrichment analysis was also made. The results displayed that 20 363 and 24 133 candidate lncRNA transcripts of yak and cattle-yak were respectively obtained, 6 178 DElncRNAs of which were selected.Compared with yak, there were 2 470 up-regulated and 3 708 down-regulated lncRNAs in cattle-yak. Meanwhile 2 676 candidate target genes of DElncRNAs were obtained. The analytical results indicated that these genes participated in 58 functional classifications and participated in 306 signal pathways. And, they were mainly involved in such signal pathways as axon guidance, endocytosis and hedgehog. In conclusion, these findings inferred that some lncRNA-mediated target genes (PTGDS, IGF2, MEST, GLIS3, NTOCH2, HOXA10, HOXA11) were associated with male infertility of cattle-yak, and lncRNA may played an important role in the reproductive development of cattle-yak. Moreover, the gap analysis of lncRNA was made by using RNA-Seq technology,which provided more complete data for further exploring the mechanisms of male infertility of cattle-yak on transcriptome.

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