China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (12): 3985-3992.doi: 10.16431/j.cnki.1671-7236.2020.12.021

• Genetics and Breeding • Previous Articles     Next Articles

Cloning of L-PGDS Gene and Its Expression Pattern in Different Tissues and Testis at Different Development Stages in Cattle-yak

MU Songyin1,2, XIONG Xianrong1,2, MA Hongcheng1,2, HAI Zhuo1,2, LI Jian1,2,3   

  1. 1. College of Life Science and Technology, Southwest Minzu University, Chengdu 610041, China;
    2. Key Laboratary of Qinghai-Tibetan Plateau Animal Centis Resource Reservation and Utolization of Ministry of Education, Chengdu 610041, China;
    3. Key Laboratary of Animal Science, State Ethnic Affairs Commission, Southwest Minzu University, Chengdu 610041, China
  • Received:2020-04-20 Online:2020-12-20 Published:2020-12-18

Abstract: The purpose of this study was to clone the prostaglandin D synthase (L-PGDS) gene and identify its expression pattern in various tissues and testis at different development stages in cattle-yak,in order to provide experimental basis for studying the mechanism of L-PGDS gene in testis development of cattle-yak.The total RNA of heart,liver,spleen,lung,kidney,large intestine,small intestine,gastric,brain and testis at different development stages (fetal,calve tuberty and old) of healthy cattle-yak were extracted by Trizol method.The L-PGDS gene sequence was amplified and cloned by RT-PCR,and analyzed by related biological software.The expression of L-PGDS gene mRNA in different tissues and testicular tissues at different development period of in cattle-yak were detected by Real-time quantitative PCR.The results showed that the length of L-PGDS gene was 624 bp,including the ORF of 576 bp,which encoded 191 amino acids.Homology alignment results showed that L-PGDS gene in cattle-yak had high homology with Bos taurus and Ovis aries,which were 99.28% and 94.00%,respectively.Phylogenetic tree results showed that the relation between cattle-yak and Bos taurus was the closest,followed by Ovis aries and Equus caballus.The L-PGDS protein was an unstable hydrophobic protein,the molecular weight was 21.229 ku,the molecular formula was C953H1471N251O281S9,the isoelectric point was 6.43,and the instability index was 47.25.The L-PGDS protein had no transmembrane region and no signal peptide.The secondary structure of L-PGDS protein contained alpha helix,random coil and extended chain,the rats of them were 25.65%,53.40% and 20.94%,respectively.L-PGDS gene was highly expressed in testis of cattle-yak,which was extremely significantly higher than that in other tissues (P<0.01).The expression of L-PGDS gene mRNA in testis of cattle-yak increased firstly and then decreased along with age,and with the highest expression in puberty stage,which was extremely significantly higher than that at other periods (P<0.01).This study provided basic data for further study on the mechanism of L-PGDS gene in the development of testis in cattle-yak.

Key words: L-PGDS gene; cattle-yak; testis; tissue expression pattern

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