小尾寒羊黄体期和卵泡期生殖轴凋亡基因的表达研究及其与发情的关系

doi:10.11843/j.issn.0366-6964.2017.11.010

畜牧兽医学报 ›› 2017, Vol. 48 ›› Issue (11): 2091-2097.doi: 10.11843/j.issn.0366-6964.2017.11.010

小尾寒羊黄体期和卵泡期生殖轴凋亡基因的表达研究及其与发情的关系

曹晓涵^1,2#, 刘秋月^1#, 王翔宇¹, 狄冉¹, 胡文萍¹, 张效生³, 张金龙³, 曾宪垠², 储明星^1*

1. 中国农业科学院北京畜牧兽医研究所, 农业部动物遗传育种与繁殖重点实验室, 北京 100193;
2. 四川农业大学生命科学学院, 雅安 625014;
3. 天津市畜牧兽医研究所, 天津 300381

收稿日期:2017-06-06 出版日期:2017-11-23 发布日期:2017-11-17
通讯作者: 储明星,博士,研究员,博士生导师,主要从事羊优异繁殖性状的分子机理研究,E-mail:mxchu@263.net
作者简介:曹晓涵(1984-),女,四川成都人,讲师,博士,主要从事绵羊四季发情分子机制研究,E-mail:caoxiaohan2007@hotmail.com;刘秋月(1983-),女,云南丽江人,博士,副研究员,E-mail:liuqiuyue@caas.cn,Tel:010-62816001。
基金资助:
国家自然科学基金项目（31501926）；国家转基因科技重大专项（2016ZX08009-003-006； 2016ZX08010-005-003）；中国博士后科学基金面上项目（2016M591308）；国家肉羊产业技术体系专项（CARS-38）；中央级公益性科研院所基本科研业务费专项（Y2017JC24；2017ywf-zd-13；2013ywf-zd-1； 2015ywf-zd-2；2015ywf-zd-8）；中国农业科学院科技创新工程（ASTIP-IAS13；CAAS-XTCX2016010-01-03；CAAS-XTCX2016010-03-03；CAAS-XTCX2016011-02-02）；宁夏农林科学院科技创新先导资金项目（DWJLC-2016001）；内蒙古自治区科技重大专项；农业科研杰出人才及其创新团队项目；国家万人计划科技创新领军人才项目；天津市科技计划项目（16ZXZYNC00050）

Expression Levels of Apoptotic Genes in HPG Axis during Luteal and Follicular Periods and Their Association with Estrus in Small Tail Han Sheep

CAO Xiao-han^1,2#, LIU Qiu-yue^1#, WANG Xiang-yu¹, DI Ran¹, HU Wen-ping¹, ZHANG Xiao-sheng³, ZHANG Jin-long³, ZENG Xian-yin², CHU Ming-xing^1*

1. Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
2. College of Life Science, Sichuan Agricultural University, Ya'an 625014, China;
3. Tianjin Institute of Animal Sciences, Tianjin 300381, China

Received:2017-06-06 Online:2017-11-23 Published:2017-11-17

摘要/Abstract

摘要：

旨在分析Bad、Bax、Bcl-2和Bcl-xL基因在小尾寒羊黄体期和卵泡期下丘脑-垂体-性腺轴各组织中的表达差异，并探究这些基因与绵羊常年发情性状的关系。以常年发情小尾寒羊为研究对象，采用实时荧光定量PCR （Real-time PCR）技术，对比分析了Bad、Bax、Bcl-2和Bcl-xL 4个基因在不同繁殖状态下（黄体期和卵泡期）小尾寒羊下丘脑-垂体-性腺轴各组织中的表达特征，采用放射免疫法（RIA）检测相应时期血清雌二醇和孕酮含量。结果表明，Bad、Bax、Bcl-2和Bcl-xL 4个基因在下丘脑、垂体、卵巢均有表达，Bad和Bcl-2在黄体期的垂体和卵巢中的表达量均显著高于卵泡期（P<0.05），在下丘脑中2个时期表达量都没有显著差异（P>0.05）；Bax和Bcl-xL在黄体期下丘脑、垂体和卵巢中的表达量与卵泡期均无显著差异（P>0.05）。黄体期血清中孕酮含量显著高于卵泡期（P<0.05），而2个时期血清中雌二醇含量没有显著差异（P>0.05）。Bad和Bcl-2基因在小尾寒羊黄体期和卵泡期的垂体和卵巢中差异表达，可能参与调控黄体期到卵泡期的发情状态转换，从而启动小尾寒羊发情。

关键词: 绵羊, 凋亡相关基因, 生殖轴, 组织表达, 发情

Abstract:

In order to identify the differential expression levels of Bad,Bax,Bcl-2 and Bcl-xL in hypothalamus-pituitary-gonadal (HPG) axis tissues during luteal and follicular periods, and to study the association of these genes with year-round estrus in Small Tail Han sheep. Year-round estrous Small Tail Han ewes were selected as tested subjects,and real-time PCR method was used to detect Bad,Bax,Bcl-2 and Bcl-xL mRNA expression by using 18S RNA as reference gene in hypothalamus-pituitary-gonadal axis tissues during luteal and follicular periods. The serum estradiol and progesterone contents were measured by RIA at the corresponding time points. The results showed that Bad,Bax,Bcl-2 and Bcl-xL genes were all expressed in hypothalamus, pituitary and ovary tissues. The expression levels of Bad and Bcl-2 genes in pituitary and ovary tissues in the luteal phase were higher than those in the follicular phase (P<0.05). The expression levels of Bad and Bcl-2 genes in hypothalamus had no significant differences between the luteal phase and the follicular phase (P>0.05). The expression levels of Bax and Bcl-xL genes in hypothalamus, pituitary and ovary tissues had no significant differences between the luteal phase and the follicular phase (P>0.05). The concentration of progesterone in the luteal phase was significantly higher than that in the follicular phase (P<0.05), while the estradiol concentration had no significant difference between the 2 stages (P>0.05). The results indicated that the expression levels of Bad and Bcl-2 genes had great differences during the luteal and follicular periods of Small Tail Han sheep,which might regulate the stage transition from luteal to follicular periods, and the 2 genes were associated with estrus onset in Small Tail Han sheep.

Key words: sheep, apoptosis-related genes, reproductive axis, tissue expression, estrus

中图分类号:

S826.2

曹晓涵, 刘秋月, 王翔宇, 狄冉, 胡文萍, 张效生, 张金龙, 曾宪垠, 储明星. 小尾寒羊黄体期和卵泡期生殖轴凋亡基因的表达研究及其与发情的关系[J]. 畜牧兽医学报, 2017, 48(11): 2091-2097.

CAO Xiao-han, LIU Qiu-yue, WANG Xiang-yu, DI Ran, HU Wen-ping, ZHANG Xiao-sheng, ZHANG Jin-long, ZENG Xian-yin, CHU Ming-xing. Expression Levels of Apoptotic Genes in HPG Axis during Luteal and Follicular Periods and Their Association with Estrus in Small Tail Han Sheep[J]. ACTA VETERINARIA ET ZOOTECHNICA SINICA, 2017, 48(11): 2091-2097.

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小尾寒羊黄体期和卵泡期生殖轴凋亡基因的表达研究及其与发情的关系

Expression Levels of Apoptotic Genes in HPG Axis during Luteal and Follicular Periods and Their Association with Estrus in Small Tail Han Sheep

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