生物技术通报 ›› 2018, Vol. 34 ›› Issue (3): 142-149.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0968

• 研究报告 • 上一篇    下一篇

牦牛KISS-1基因的克隆及其在生殖轴的表达

杨远潇1, 字向东2,   

  1. 1. 西南民族大学青藏高原研究院,成都 610041;
    2. 西南民族大学生命科学与技术学院,成都 610041
  • 收稿日期:2017-11-10 出版日期:2018-03-20 发布日期:2018-04-10
  • 作者简介:杨远潇,女,硕士研究生,研究方向动物遗传学;E-mail352793747@qq.com
  • 基金资助:
    四川省应用基础项目(2013JY0043),西南民族大学研究生创新科研项目(CX2017SZ030)

Cloning of KISS-1 Gene in Yak and Its Expression in Reproductive Axis

YANG Yuan-xiao1, ZI Xiang-dong2   

  1. 1. Institute of Qinghai Tibet Plateau,Southwest Minzu University,Chengdu 610041;
    2. College of Life Science and Technology,Southwest Minzu University,Chengdu 610041
  • Received:2017-11-10 Published:2018-03-20 Online:2018-04-10

摘要: KISS-1在动物繁殖调控中具有重要作用,旨为探讨KISS-1基因在牦牛季节性繁殖中的调控作用。实验采集5头成年母牦牛和5头黄牛的下丘脑、垂体等组织,利用RT-PCR和qPCR技术研究其KISS-1基因序列及组织表达特性。结果表明,牦牛和黄牛KISS-1基因编码区长度为408 bp,编码135个氨基酸,比对分析发现牦牛和黄牛基因编码区存在7处碱基突变。牦牛KISS-1基因氨基酸序列与黄牛、藏山羊、绵羊、野猪、人和褐家鼠的同源性分别为97%、85%、65%、55%和51.5%。KISS-1基因mRNA在牦牛和黄牛的下丘脑、垂体、卵巢、输卵管及子宫中均有表达。在下丘脑和脑垂体的表达丰度高,但两物种间无显著性差异(P>0.05)。说明KISS-1基因在动物进化中比较保守,对牦牛季节性繁殖的调控作用有待进一步研究。

关键词: 牦牛, 黄牛, KISS-1, 序列分析, 组织表达

Abstract: KISS-1 plays a pivotal role in the regulation of animal reproduction,thus this study is aimed to investigate the role of KISS-1 gene in regulating seasonal reproduction of the yak. Samples of hypothalamus,pituitary etc. were collected from five adult female yaks and five yellow cattle. KISS-1 gene sequence and its tissue expression characteristics were studied by RT-pcr and qPCR techniques. The results showed that the coding region length of yak and yellow cattle KISS-1 gene was 408 bp,which encoded 135 amino acids,and there were 7 base mutations between these two species. The amino acid sequence identities of yak KISS-1 gene with yellow cattle,Tibetan goats,sheep,wild pig,human,and sewer rat were 97.1%,85%,65%,55%,and 51.5% respectively. Expression of KISS-1 gene was detected in hypothalamus,pituitary,ovary,fallopian tube,and uterus of yak and cattle. The expression levels in hypothalamus and pituitary were the greatest,but there was no significant difference between the two species(P > 0.05). It is concluded that KISS-1 gene is conservative in animal evolution,and its regulation roles in seasonal reproduction of the yak need to be further studied.

Key words: yak, yellow cattle, KISS-1, sequence analysis, tissue expression