遗传 ›› 2014, Vol. 36 ›› Issue (6): 574-583.doi: 10.3724/SP.J.1005.2014.0574

• 研究报告 • 上一篇    下一篇

利用SSH方法筛选与鉴定AC3基因缺失小鼠主要嗅觉表皮内的差异表达基因

曹振龙1, 郝江叶1, 周艳芬1, 2, 张喆3, 倪志华1, 胡远想3, 刘伟丽3, 李永超4, 马润林4, 王振山1, 2   

  1. 1. 河北大学生命科学学院, 保定 071002;
    2. 河北省生物工程技术研究中心, 保定 071002;
    3. 河北大学基础医学院, 保定 071002;
    4. 中国科学院遗传与发育生物学研究所, 北京 100101; 5. Department of Pharmacology, University of Washington, Seattle, WA 98195
  • 收稿日期:2013-11-24 修回日期:2014-01-16 出版日期:2014-06-20 发布日期:2014-05-28
  • 通讯作者: 王振山,教授,博士生导师,研究方向:动物行为遗传分子机制。E-mail:zswang@hbu.edu.cn E-mail:dafeizizhu@163.com
  • 作者简介:曹振龙,硕士研究生,专业方向:细胞分子生物学。E-mail:dafeizizhu@163.com
  • 基金资助:

    国家自然科学基金项目(编号:31171191), 河北省自然科学基金项目(编号:C2012201106), 教育部留学人员回国启动基金项目(教外司留<2013>693号)和河北省生物工程重点学科经费资助

Differentially expressed genes identified in the main olfactory epithelium of mice with deficiency of adenylate cyclase 3 by using suppression subtractive hybridization approach

Zhenlong Cao1, Jiangye Hao1, Yanfen Zhou1, 2, Zhe Zhang3, Zhihua Ni1, Yuanxiang Hu3, Weili Liu3, Yongchao Li4, Daniel R. Storm5, Runlin Z. Ma4, Zhenshan Wang1, 2   

  1. 1. College of Life Science, Hebei University, Baoding 071002, China;;
    2. Research Center of Bioengineering of Hebei Province, Baoding 071002, China;;
    3. College of Basic Medicine, Hebei University, Baoding 071002, China;;
    4. Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China;; 5. Department of Pharmacology, University of Washington, Seattle, WA 98195, USA
  • Received:2013-11-24 Revised:2014-01-16 Online:2014-06-20 Published:2014-05-28

摘要:

腺苷酸环化酶3(Adenylate cyclase 3, AC3)基因在小鼠主要嗅觉表皮(Main olfactory epithelium, MOE)内的嗅觉信号传导中起着重要作用, AC3缺失是否会导致MOE内与之相关的基因发生差异表达, 尚待确定。文章利用抑制性消减杂交(Suppression subtractive hybridization, SSH)方法, 以AC3敲除(AC3-/-)及其同窝出生的野生型(AC3+/+)小鼠MOE为材料, 构建了正向和反向两个消减文库, 采用斑点杂交对消减文库进行初步筛选, 对筛选出的差异表达基因进行序列测定及生物信息学分析, 并利用荧光定量PCR(qRT-PCR)方法对其进行验证。斑点杂交筛选获得了386个差异表达克隆, 随机选取其中的80个进行DNA序列测定, 经序列比对后发现有62个在GenBank上获得了与之相匹配的基因信息, 其中24个上调差异表达克隆对应于kcnk3mapk7megf11等基因, 38个下调差异表达克隆对应于tmem88bc-mipskp1amlycd等基因。利用Gene Ontology(GO)方法对这些差异表达基因进行蛋白功能注释, 发现它们主要集中在分子结合、细胞周期、生物和细胞过程等功能方面。选取其中上调基因kcnk3和下调基因c-mipmlycdtmem88btrappc5进行qRT-PCR验证。结果表明, 在AC3-/-小鼠MOE内kcnk3的表达量显著上调, 是对照组小鼠的1.27倍, 而c-mipmlycdtmem88btrappc5的表达量显著下调, 为对照组小鼠的20%、7%、32%和29%。这些基因的功能与K+通道、细胞发育与分化、脂肪代谢和膜蛋白转运等密切相关。推测它们可能与AC3基因共同作用, 调节小鼠MOE内的嗅觉信号传导信息。

关键词: 腺苷酸环化酶3, 主要嗅觉表皮, 差异表达基因, 抑制性消减杂交

Abstract:

Adenylate cyclase 3 (AC3) is one of the major players in the olfactory signaling within the main olfactory epithelium (MOE) of mice. However, we are not ascertained whether deficiency of AC3 will lead to the differential expression of related genes in the MOE. Forward and reverse subtractive libraries were constructed by suppression subtractive hybridization (SSH) approach, with MOEs from AC3-/- and AC3+/+ mice. These two libraries were primarily screened by Dot blot, differential expressed clones were sequenced and analyzed by bioinformatics, and differential expressed genes were verified by qRT-PCR. A total of 386 differentially expressed clones were picked out after Dot blot. The DNA sequences of 80 clones randomly selected were determined, and 62 clones were identified by blasting in GenBank. We found that 24 up-regulated clones were corresponded to genes of kcnk3, mapk7, megf11, and 38 down-regulated clones were corresponded to tmem88b, c-mip, skp1a, mlycd, etc. Their functions were annotated with Gene Ontology (GO) and found to be mainly focused on molecular binding, cell cycle, processes of biology and cells. Five genes (kcnk3, c-mip, mlycd, tmem88b and trappc5) were verified by qRT-PCR with individuals of AC3+/+ and AC3-/- mice. The data indicate that kcnk3 gene is up-regulated significantly, increasing 1.27 folds compared to control mice, whereas c-mip, mlycd, tmem88b and trappc5 are down-regulated significantly, decreasing 20%, 7%, 32% and 29% compared to the AC3+/+mice. The functions of these genes are closely related with K+ channels, cell differentiation, metabolism of fats, membrane transportation, and so on. It is tempting to speculate that these genes might work together with AC3 to orchestrate the olfactory transduction signaling in the MOE.

Key words: adenylate cyclase 3 (), main olfactory epithelium (MOE), differentially expressed genes, suppression subtractive hybridization (SSH)