Acta Agriculturae Boreali-Sinica ›› 2022, Vol. 37 ›› Issue (6): 219-227. doi: 10.7668/hbnxb.20193224

Special Issue: Animal husbandry Biotechnology Hot Article

• Animal Husbandry·Fisheries·Veterinarian • Previous Articles     Next Articles

Cloning and Expression of KIF2A Gene During Follicular and Oocyte Development in Yak

YANG Manzhen1, MIN Xingyu1,2, YANG Luyu3, YU Hailing1,3, HU Yulei1,3, ZHU Yanjin2, PAN Bangting3, LI Jian1,2, XIONG Xianrong1,2   

  1. 1 College of Animal & Veterinary Sciences,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:2022-07-23 Published:2022-12-28

Abstract:

The aim of this study was to clone the kinesin family member 2A gene(KIF2A),and explore the expression pattern of KIF2A gene in different tissues of yak,as well as the spatially and temporally expressed during the follicular development and oocyte meiotic maturation.The heart,liver,spleen,lung,kidney stomach,uterus and ovary tissues(n=5)were collected from 3—4 years old healthy female yak after slaughter.Yak KIF2A gene was amplified by RT-PCR with yak ovarian cDNA as template,and its protein were analyzed by bioinformatics software such as MAGA 7.0 and SWISS-MODEL etc.Quantitative Real-time PCR(RT-qPCR)was used to detect the expression level of KIF2A in yak various tissues and immunohistochemistry was used to analyze the expression and localization of KIF2A in follicles with different diameters.According to the diameter,the follicle were divided into three groups: small(diameter 1.0—2.9 mm),medium(diameter 3.0—5.9 mm),and large(diameter 6.0—9.0 mm)follicle.The expression characteristics of KIF2A gene in granulosa cells and oocyte meiosis in follicles were analyzed by RT-qPCR.The results showed that sequence length of KIF2A gene was 1 964 bp,and the CDS was 1 530 bp,which encoding 509 amino acids.KIF2A protein was negatively charged and belonged to hydrophobic protein.KIF2A gene was relatively conservative and widely expressed in various tissues of yaks, and KIF2A protein was mainly located in granulosa cells, its mRNA expression in follicular granulosa cells with different diameter and size increased with the growth and development of follicles. During the meiotic maturation of yak oocytes,the expression of KIF2A showed a sequential feature,and the G Ⅴ phase was significantly higher than that of M Ⅰ and M Ⅱ phase.The results showed that KIF2A might be involved in the regulation of follicular and oocyte maturation development in yaks,and the results of this study provided basic data for the functional study of KIF2A gene in yak follicular development.

Key words: Yak, KIF2A genes, Sequence characteristics, Tissue expression, Oocyte

Cite this article

YANG Manzhen, MIN Xingyu, YANG Luyu, YU Hailing, HU Yulei, ZHU Yanjin, PAN Bangting, LI Jian, XIONG Xianrong. Cloning and Expression of KIF2A Gene During Follicular and Oocyte Development in Yak[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(6): 219-227. doi: 10.7668/hbnxb.20193224.

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