畜牧兽医学报 ›› 2016, Vol. 47 ›› Issue (2): 260-267.doi: 10.11843/j.issn.0366-6964.2016.02.007

• 遗传繁育 • 上一篇    下一篇

miRNA-34基因家族进化分析及其在鹅生殖周期内的表达变化

刘然1,2#,张惠子1#,云皓琪1,陈阳1,2,黄正洋1,2,张扬1,2,徐琪1,2,陈国宏1,2*   

  1. (1.扬州大学 动物科学与技术学院,扬州 225009; 2.江苏省动物遗传繁育与分子设计重点实验室,扬州 225009)
  • 收稿日期:2015-06-10 出版日期:2016-02-23 发布日期:2016-02-23
  • 通讯作者: 陈国宏,E-mail:ghchen@yzu.edu.cn
  • 作者简介:刘然(1990-),女,山东济宁人,硕士生,主要从事动物遗传育种与繁殖方面研究,E-mail:betterlr@163.com;张惠子(1993-),女,江苏连云港人,本科生,主要从事动物科学研究,E-mail:15396752381@163.com。刘然和张惠子为并列第1作者
  • 基金资助:

    江苏省高等学校大学生创新创业训练计划项目(201411117050Y);现代农业产业技术体系建设专项CARS-43-3);江苏高校优势学科建设工程资助项目(苏政办发[2011]137号)

Molecular Evolution Analyzing of miRNA-34 Gene Family and Its Expression in Goose Reprodutive Cycle

LIU Ran1,2# ,ZHANG Hui-zi1# ,YUN Hao-qi1,CHEN Yang1,2,HUANG Zheng-yang1,2,ZHANG Yang1,2,XU Qi1,2,CHEN Guo-hong1,2*   

  1. (1.College of Animal Science and Technology,Yangzhou University,Yangzhou 225009,China;2.Jiangsu Key Laboratory of Animal Genetics & Breeding and Molecular Design,Yangzhou 225009,China)
  • Received:2015-06-10 Online:2016-02-23 Published:2016-02-23

摘要:

旨在探明miRNA-34基因家族(miRNA-34s)系统进化历程及其在鹅生殖周期内的表达变化规律。通过文献和miRBase数据库检索脊椎动物的miRNA-34s序列,利用Ensembl数据库信息,确定miRNA-34s在基因组中的位置,采用MEGA 6.0构建miRNA-34s的系统进化树;并利用RT-qPCR检测鹅卵巢组织miRNA-34s在生殖周期内的表达变化。结果在脊椎动物中共搜索70余条miRNA-34s序列,miRNA-34s 3个成员(miRNA-34a、miRNA-34b和miRNA-34c)在脊椎动物中分布广泛,高度保守,均位于基因间隔区(Intergenic region,IGR ),且miRNA-34b和miRNA-34c两个基因位于同一染色体上,在进化过程中紧密相连,可能是由于串联重复所致。RT-qPCR检测结果显示,miRNA-34s 3个成员在鹅的开产前期、排卵期、排卵后期和就巢期卵巢组织中表现出相同趋势的表达,即在排卵期、排卵后期表达水平高于或显著高于开产前期和就巢期。miRNA-34家族在进化中高度保守,且在调控鹅生殖周期中发挥一定的作用。

Abstract:

This experiment was conducted to investigate the miRNA-34 gene family evolutionary process and its expression regularity in goose reproductive cycle.The miRNA-34 genes were searched in literatures and miRBase.It’s genes were located by Ensemble database,and its phylogenetic tree was constructed by MEGA 6.0.In addition,the expression level of miRNA-34s was detected in ovarian tissue of goose reproductive cycle using RT-qPCR.A total 70 sequences in 27 species which indicated the extensive existence of miRNA-34s(miRNA-34a,miRNA-34b and miRNA-34c) in different species.The analysis of gene localization showed all miRNA-34 genes were located on the intergenic region(IGR).miRNA-34b and miRNA-34c shared on the same chromosome and they were closely linked in evolutionary process,which maybe caused by tandem repeats.Besides,the similar expression of miRNA-34s were detected in goose ovary tissues of pre-laying stage,ovulation,oviposition,and the broody phase.More miRNA-34s expression was detected at ovulation,oviposition than that in pre-laying and broody phase period.The miRNA-34s are highly conservative in evolution process,and play a role in regulation reproductive activity in goose.

中图分类号: