中国农业科学 ›› 2013, Vol. 46 ›› Issue (22): 4784-4790.doi: 10.3864/j.issn.0578-1752.2013.22.016

• 畜牧·兽医·资源昆虫 • 上一篇    下一篇

山羊卵巢富集chi-miR-100f-5p的鉴定与表达分析

 娜日苏12, 刘广1, 向阳1, 赵海林1, 吴亭1, 赵金红2, 李凡1, 黄选洋1, 孙晓卫1, 郑姣1, 张家骅1   

  1. 1.西南大学动物科技学院/重庆市牧草与草食家畜重点实验室/重庆市草食动物资源保护与利用工程技术研究中心,重庆 400715
    2.重庆市畜牧科学院,重庆 400716
  • 收稿日期:2013-01-25 出版日期:2013-11-15 发布日期:2013-04-23
  • 通讯作者: 通信作者张家骅,Tel:023-68250215;E-mail:jhzhang007@yahoo.com.cn
  • 作者简介:娜日苏,Tel:023-68251196;E-mail:narisu193@sina.com。刘广,Tel:023-68251196;E-mail:jianliuxue@sina.com
  • 基金资助:

    中央高校基本科研业务费专项资金(XDJK2010C101)、西南大学博士基金项目(SWU111048)、国家自然科学基金项目(31172195)、重庆市科技攻关计划项目(CSTC,2011AB1084)、重庆市畜牧科学院基本科研业务项目(10604)

Characterization and Expression Analysis of Goat Ovarian chi-miR-100f-5p

 NA  Ri-Su-12, LIU  Guang-1, XIANG  Yang-1, ZHAO  Hai-Lin-1, WU  Ting-1, ZHAO  Jin-Hong-2, LI  Fan-1, HUANG  Xuan-Yang-1, SUN  Xiao-Wei-1, ZHENG  Jiao-1, ZHANG  Jia-Hua-1   

  1. 1.College of Animal Science and Technology, Southwest University/Chongqing Key Laboratory of Forage and Herbivore/Chongqing Engineering Research Center for Herbivores Resource Protection and Utilization, Chongqing 400715
    2.Chongqing Academy of Animal Husbandry, Chongqing 400716
  • Received:2013-01-25 Online:2013-11-15 Published:2013-04-23

摘要: 【目的】探讨山羊卵巢中富集的miR-100及预测的靶基因与山羊卵巢功能及卵泡发育的潜在关系,为山羊繁殖机理研究提供数据。【方法】 以山羊卵巢组织为材料,通过miRNA的分离、克隆及测序得到山羊卵巢中表达的miR-100,采用RT-qPCR进行表达检测,用生物信息学方法预测miR-100的靶基因及其功能。【结果】① 山羊卵巢的测序结果中,一段成熟体为21nt 的序列与果蝇dan-miR-100高度同源,将其命名为chi-miR-100f-5p,其前体位于基因组负(-)链上,长度为59 bp,定位于山羊CM000899.1:33 997 894—33 997 914序列;② chi-miR-100f-5p 在山羊卵巢、垂体及心脏等组织中均有表达,说明此miRNA不是卵巢组织所特有;心脏和垂体组织中均有较高表达,其次是卵巢,而在肝脏、脾脏、肺及肾脏中表达显著低于卵巢(P <0.01);在单产羔内蒙古绒山羊卵巢中chi-miR-100f-5p的表达极显著高于高繁殖力大足黑山羊卵巢(P<0.01);③ chi-miR-100f-5p主要靶作用于整合蛋白β1亚基基因及垂体特异性转录因子1基因,可能参与整合蛋白信号通路,促进垂体内分泌细胞的生长与分化,调节下丘脑-垂体-性腺轴激素分泌。【结论】山羊卵巢中新发现的chi-miR-100f-5p 可能是与繁殖调控有关的重要候选miRNAs 之一。

关键词: chi-miR-100f-5p , 微小RNA , 卵巢

Abstract: 【Objective】 The relationship between the goat ovarian expressed miR-100 with its predicted target genes and goat ovarian function or follicular development was studied in order to provide data for goat breeding mechanism.【Method】 Goat ovarian expressed miR-100 was obtained by cloning and sequencing a small RNA library with pooled RNA from goat ovarian tissue. The expression profiling was detected by RT-qPCR. miR-100 target genes and functional classification were predicted by bioinformatics method.【Result】The chi-miR-100f-5p, at a length of 21 nt , was isolated from goat ovaries. The sequence is highly homologous with dan-miR-100, and has one loci in the genome negative (-) chain, which located in goats sequence CM000899.1: 33997894 to 33997914; The chi-miR-100f-5p was detected in goat ovarian, pituitary, heart and other tissues, showing chi-miR- 100f-5p was not an ovarian-specific miRNA. It was found that chi-miR-100f-5p expressed at higher level in heart and pituitary, secondly in ovary, and the expression of chi-miR-100f-5p in the liver, spleen, lung, and kidney was significantly lower than in ovary (P<0.01). It was alsofound that chi-miR-100f-5p expressed at significantly higher level in single lambing Inner Mongolia cashmere goat ovary than the high fecundity Dazu black goat ovary (P<0.01); The chi-miR-100f-5p was mainly targeted for integrin β1 subunit and pituitary-specific transcription factor 1 gene, and might be involved in the integrin signaling pathway, promoting the growth and differentiation of pituitary endocrine cells, and regulating the hypothalamic-pituitary-gonadal axis hormonessecretion.【Conclusion】The newly discovered chi-miR-100f-5p in goat ovarian may be an important candidate miRNA in regulation of breeding.

Key words: chi-miR-100f-5p , microRNA , ovary