Acta Veterinaria et Zootechnica Sinica ›› 2022, Vol. 53 ›› Issue (2): 481-492.doi: 10.11843/j.issn.0366-6964.2022.02.015

• ANIMAL BIOTECHNOLOGY AND REPRODUCTION • Previous Articles     Next Articles

Cloning and Expression Analysis of Cattle-yak PPP1R11 Gene in Testis

MIN Xingyu1, YANG Lixue2*, YU Hailing1, HU Yulei3, YANG Manzhen3, YANG Luyu3, LI Jian1,2, XIONG Xianrong1,2*   

  1. 1. College of Animal Science and Veterinary Medicine, Southwest Minzu University, Chengdu 610041, China;
    2. Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization of Ministry of Education, Chengdu 610041, China;
    3. Key Laboratory of Animal Science of State Ethnic Affairs Commission, Chengdu 610041, China
  • Received:2021-06-28 Online:2022-02-23 Published:2022-03-02

Abstract: This study was conducted to clone the PPP1R11 gene in cattle-yak, detect the expression and location in testes of cattle-yak at different developmental stages, as to provide a theoretical basis for further research of the mechanism of function in male reproduction. The testis, epididymis, heart, liver, spleen, lung, kidney, large intestine, small intestine, stomach, muscle and adipose tissue of adult cattle-yak were collected (n=3), testicles of cattle-yak and yak in the fetal period (5-6 months old), juvenile period (1-2 years old) and adult period (3-4 years old) (n=3) were collected as experimental materials. The PPP1R11 CDS region of cattle-yak was cloned by RT-PCR and analyzed by bioinformatics softwares. qRT-PCR was used to detect the expression patterns of PPP1R11 mRNA in different tissues of cattle-yak, and compared the expression difference in testes at different development stages between cattle-yak and yak. The cell location and expression of PPP1R11 protein were detected by immunohistochemistry (IHC) staining. The results showed that the CDS region of PPP1R11 gene in cattle-yak was 324 bp, which encoded 107 amino acids. The corresponding PPP1R11 protein of cattle-yak had high homology with other mammals. The protein function prediction showed that PPP1R11 could interact with PPP1R2, PPP1R7, PPP1CB, UTP20 and other proteins, and mainly related to the phosphorylation of proteins, which could regulate biological processes such as testicular development, spermatogenesis and sexual maturity. PPP1R11 gene was wildly expressed in various tissues of cattle-yak, and the relative expression level in testis was significantly higher than other tissues (P<0.01). The expression of PPP1R11 gene in cattle-yak testis increased with age. Furthermore, there was significant difference of the expression level of PPP1R11 (P<0.01) in testis at juvenile and adult stage of cattle-yak compared with the counterpart of yak. In addition, IHC staining result showed that PPP1R11 protein was significantly lower expressed in cattle-yak spermatogonia and sertoli cells, and there was significant difference compared with yak, and the number of primary spermatocytes in cattle-yak was reduced significantly and meiosis arrested at this stage. This study showed that there were temporal and spatial differences in the expression of PPP1R11 between cattle-yak and yak testis, suggesting that PPP1R11 may be related to to male cattle-yak infertility. However, its specific mechanism needs to be further studied.

Key words: cattle-yak, PPP1R11, gene cloning, gene expression, meiosis, testis development

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