畜牧兽医学报 ›› 2014, Vol. 45 ›› Issue (3): 391-401.doi: 10.11843/j.issn.0366-6964.2014.03.008

• 遗传繁育 • 上一篇    下一篇

基于高通量转录组测序的山羊睾丸和附睾头差异表达基因分析

张春香,张国林,郭丽娜,赵辉,任有蛇*   

  1. (山西农业大学动物科技学院,太谷 030801)
  • 收稿日期:2013-11-03 出版日期:2014-03-23 发布日期:2014-03-23
  • 通讯作者: 任有蛇,E-mail:rys925@126.com
  • 作者简介:张春香(1972-),女,山西侯马人,博士,副教授,主要从事动物繁殖生理研究,E-mail:zhchx66@126.com
  • 基金资助:

    国家自然科学基金资助项目(30871794)

Study on Differentially Expressed Genes between Caprine Testis and Epididymis Caput Based on Transcriptomes with High-throughput RNA-seq Technology

ZHANG Chun-xiang,ZHANG Guo-lin,GUO Li-na,ZHAO Hui,REN You-she*   

  1. (College of Animal Science and Veterinary Medicine,Shanxi Agricultural University,Taigu 030801, China)
  • Received:2013-11-03 Online:2014-03-23 Published:2014-03-23

摘要:

为探明山羊睾丸和附睾差异表达基因,挖掘与精子成熟和贮存密切相关的功能基因。采用Illumina HiSeqTM 2000高通量转录组测序RNA-seq技术对3只成年种公羊睾丸和附睾头进行测序,将组装得到的Unigene比对到Nr、GO和KEGG数据库中注释,并进行差异表达基因聚类分析。结果显示,睾丸和附睾头Unigene总数分别为57 727个和51 395个, GO功能分类注释到生物过程、分子功能和细胞组成数据库中的分别有25 201、25 456和27 318个,其中差异表达基因数分别为9 150、9 172和10 003个;注释到KEGG通路中所有基因数23 222个,其中差异表达基因数8 219个,差异基因显著富集的信号通路:mRNA监视通路和mTOR信号通路;睾丸和附睾头中差异表达的基因共有24 592个,其中上调基因有8 420个,下调基因有16 172个。在附睾头中上调幅度最大的前3位:gDEFB124、gDEFB109和gDEFB108,下调幅度最大的前3位:GTSF1LSRRM1和FNDC8。附睾头中表达量最高的前3位基因依次为Lcn5、gDEFB124和GPx5。睾丸中表达的基因数量大于附睾头中数量;β防御素家族、Lipocalin家族和GPx5可能在附睾头精子成熟、贮存和受精中发挥重要作用。

Abstract:

The objective of this study was to find the differentially expressed genes between testis and epididymis caput in adult bucks,which was necessary to better understand mechanisms involved in spermatogenesis and sperm maturation.Testis and epididymis caput of three adult bucks known fertility were isolated and their mRNA were respectively extracted.The transcriptomes were analyzed by Illumina HiSeqTM 2000 high-throughput RNA sequencing.All of Unigenes were annotated using the BLAST search against Nr,GO and KEGG databases.The differentially expressed genes were enriched in gene ontology and KEGG pathway.The results showed that 57 727 and 51 395 Unigenes were respectively in caprine testis and epididymis caput; There were 25 201 Unigenes annotated into database of molecular function,25 456 Unigenes into cellular component,27 318 Unigenes into biological process,of which there were 9 150,9 172 and 10 003 the differentially expressed genes respectively; There were 23 222 Unigenes annotated into KEGG pathways,including 8 219 the differentially expressed genes.The signal pathways that differentially expressed genes clustered significantly were mRNA surveillance pathway and mTOR signaling pathway; There were 24 592 the differentially expressed genes in caprine testis and epididymis caput,in which 8 420 genes were up-regulated and 16 172 genes were down-regulated.The top three genes of all up-regulated genes in epididymis caput were beta-defensin 124、beta-defensin 109 and beta-defensin 108,whereas the top three genes of all down-regulated genes were gametocyte specific factor 1-like,Serine/arginine repetitive matrix 1 and fibronectin type III domain containing 8.The three of the highest expressed genes in epididymis caput were lipocalin 5,beta-defensin 124 and glutathione peroxidase 5.The transcriptomes in testis were more than those in epididymis caput; The family of bete-defensins,lipocalins and GPx5 may play important roles in sperm maturation,storage and fertilization.

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