畜牧兽医学报 ›› 2015, Vol. 46 ›› Issue (11): 1944-1951.doi: 10.11843/j.issn.0366-6964.2015.11.005

• 遗传繁育 • 上一篇    下一篇

山羊骨骼肌中miR-133及其靶基因的表达规律与功能研究

凌英会1,2,3,王丽娟1,2,王康岩1,2,李运生1,2,丁建平1,2,张运海1,2,章孝荣1,2,3*   

  1. (1.安徽农业大学动物科技学院,合肥 230036;2.安徽地方畜禽遗传资源保护与生物育种省级实验室,合肥 230036;3.安徽省羊繁育工程技术研究中心,合肥 230036)
  • 收稿日期:2015-05-04 出版日期:2015-11-23 发布日期:2015-11-20
  • 通讯作者: 章孝荣,教授,博士生导师,主要从事动物生殖调控研究,E-mail:zhangxiaorong01@163.com
  • 作者简介:凌英会(1981-),男,安徽安庆人,副教授,博士,主要从事动物遗传育种与繁殖研究,E-mail:caaslyh@163.com
  • 基金资助:

    国家自然科学基金项目(31301934;31372310);安徽省自然科学基金(1308085QC54)

The Expression Profiles and Function Analysis of miR-133 in Goat Skeletal Muscle Tissue and Cell

LING Ying-hui1,2,3,WANG Li-juan1,2,WANG Kang-yan1,2,LI Yun-sheng1,2,DING Jian-ping1,2,ZHANG Yun-hai1,2,ZHANG Xiao-rong1,2,3*   

  1. (1.College of Animal Science and Technology,Anhui Agricultural University,Hefei 230036,China;2.Local Animal Genetic Resources Conservation and Biobreeding Laboratory of Anhui Province,Hefei 230036,China;3.Engineering Research Center of Reproduction and Breeding in Sheep of Anhui Province,Hefei 230036,China)
  • Received:2015-05-04 Online:2015-11-23 Published:2015-11-20

摘要:

旨在研究miR-133及其靶基因SRF在山羊骨骼肌组织和细胞中的表达情况,并探讨miR-133对SRF基因的靶向调控作用。首先利用qRT-PCR分别检测miR-133及其靶基因在初生、7月龄、18月龄的安徽白山羊和波尔山羊8个组织(心、肝、脾、肺、肾、小肠、脂肪、背最长肌)以及不同代数的山羊骨骼肌卫星细胞(F6、F9、F12)中的表达变化;采用qRT-PCR及Western印迹法检测miR-133对靶基因mRNA及蛋白质表达水平的影响。qRT-PCR检测表明,miR-133在心肌和背最长肌中的表达水平明显高于其它组织,其靶基因SRF的表达水平与其相反;miR-133在山羊骨骼肌卫星细胞中的表达水平随着细胞代数的增多而表达量增加;qRT-PCR及Western印迹法证实,miR-133对SRF蛋白表达的调控发生在转录后水平。综上表明,miR-133有望成为研究山羊骨骼肌生长发育的新型标志物;miR-133通过在转录后水平抑制SRF蛋白的表达参与调控山羊骨骼肌细胞增殖和分化,进而影响山羊骨骼肌的发育。

关键词: 山羊, miR-133, 靶向调控, 基因表达

Abstract:

The purpose of this experiment was to study the expression of miR-133 and its target gene SRF in skeletal muscle tissue and cells in goat,and the effects of miR-133 on target gene(SRF).The qRT-PCR was used to detect different expression of miR-133 and its target gene in different tissues of newborn,7 months and 18 months old Anhui white goat and Boer goat(heart,liver,spleen,lung,kidney,small intestine,fat,longissimus dorsi) and different goat skeletal muscle satellite cells(F6,F9,F12);qRT-PCR and the Western blot was used to detect the mRNA of target gene and protein expression level.The results of qRT-PCR showed that the expression level of miR-133 in myocardium and longissimus dorsi muscle was higher than that in other tissues,the expression level of the target gene SRF was different from miR-133 in goat;The expression level of miR-133 in skeletal muscle satellite cells increased with the cell generations;That regulation of miR-133 on SRF protein expression occurred at the post transcriptional level by qRT-PCR and Western blot.The results showed that miR-133 was expected to become a new marker of goat skeletal muscle growth and development;miR-133 was involved in the regulation of proliferation and differentiation of goat by inhibiting the expression of SRF protein in the post transcriptional level,thereby affecting the goat skeletal muscle development.

Key words: goat, miR-133, target regulating, gene expression

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