畜牧兽医学报 ›› 2015, Vol. 46 ›› Issue (5): 696-703.doi: 10.11843/j.issn.0366-6964.2015.05.003

• 遗传繁育 • 上一篇    下一篇

绵羊Otx-2基因的分子克隆、组织表达及其与季节性繁殖关系的研究

郭若婷1,鲁慧文2,欧科鹏1,王颖1,刘乙1,顾真真1,刘小军3*   

  1. (1.石河子大学动物科技学院,石河子 832003;2.新疆天康畜牧科技有限公司,昌吉 831100;3.河南农业大学牧医工程学院,郑州 450002)
  • 收稿日期:2014-10-30 出版日期:2015-05-23 发布日期:2015-05-23
  • 通讯作者: 刘小军,教授,博导,E-mail:xjliu2008@hotmail.com
  • 作者简介:郭若婷(1990-),女,新疆石河子人,硕士生,主要从事绵羊分子遗传育种研究,E-mail:674470976@qq.com
  • 基金资助:

    教育部高等学校博士学科点专项科研基金(博导类)(20126518110004)

Cloning and Tissues Expression Analysis of Otx-2 and the Associations with Seasonal Breeding in Sheep

GUO Ruo-ting1,LU Hui-wen2,OU Ke-peng1,WANG Ying1,LIU Yi1,GU Zhen-zhen1,LIU Xiao-jun3*   

  1. (1.College of Animal Science and Technology,Shihezi University,Shihezi 832003,China;2.TECON Animal Husbandry Technology Corporation,Changji 831100,China;3.College of Animal Science and Veterinary Medicine,Henan Agricultural University,Zhengzhou 450002,China)
  • Received:2014-10-30 Online:2015-05-23 Published:2015-05-23

摘要:

旨在研究绵羊Otx-2基因与绵羊繁殖的关系,从阿勒泰绵羊下丘脑组织中克隆Otx-2及MT1、KISS-1、GnRH基因CDs(Coding region)区部分序列,采用RT-PCR分析了这些基因在心、肝、脾、肺、肾、大肠、小肠、胃、大脑、小脑、子宫、垂体、松果体、下丘脑和甲状腺组织中的表达差异;进一步用实时荧光定量PCR方法分析繁殖期和繁殖间期绵羊下丘脑中这些基因在日间和夜间表达的变化规律。结果表明,Otx-2和KISS-1、MT1基因在各组织中均有不同程度的表达,其中Otx-2和KISS-1在下丘脑中的表达量较高。Otx-2基因与KISS-1和GnRH基因在繁殖期的表达量均高于繁殖间期的表达量,且均表现出夜间的表达量极显著高于日间表达量的相似表达规律,综上表明,Otx-2基因可能参与绵羊的季节性繁殖调控。

Abstract:

In order to understand the effect of Otx-2 gene on sheep reproductive regulation,the part of CDS(Coding region) Otx-2,MT1,KISS-1,GnRH genes were cloned from Altay sheep hypothalamus tissue.Semi-quantitative RT-PCR was used to analyze the tissues(heart,liver,spleen,lung,kidney,large intestine,small inestine,stomach,brain,epencephalon,uterus,hypophysis,pineal body,hypothalamus,thyroid) expression profile of the genes.The expression patterns of Otx-2,MT1,KISS-1 and GnRH genes in hypothalamus with different periods were further investigated by real-time fluorescence quantitative PCR.The results showed that Otx-2 and KISS-1,MT1 mRNAs were expressed in many tissues tested,which hypothalamus showed higher expression levels for Otx-2 and KISS-1.In addition,the Otx-2 gene showed a similar expression pattern to KISS-1 and GnRH,which were significantly higher in the breeding seasons than that in the non-breeding seasons(P<0.01),and also significantly higher in the night than in the day time(P<0.01).It was concluded that Otx-2 gene might take part in seasonal reproduction in sheep.

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