生物技术通报 ›› 2015, Vol. 31 ›› Issue (5): 179-185.doi: 10.13560/j.cnki.biotech.bull.1985.2015.05.028

• 研究报告 • 上一篇    下一篇

红笛鲷(Lutjanus sanguineus)C型凝集素基因的克隆与组织表达分析

蔡佳1,2,3, 张雪利1,2,3, 吴灶和2,3, 简纪常1,2,3, 鲁义善1,2,3, 冯东岳4, 焦茂兴5   

  1. (1.广东海洋大学 水产学院,湛江 524088;2.广东省水产经济动物病原生物学及流行病学重点实验室,湛江 524088;3.广东省水产经济动物病害控制重点实验室,湛江 524088;4.农业部全国水产技术推广总站,北京 100125;5.宜春学院,宜春 336000)
  • 收稿日期:2014-10-11 出版日期:2015-05-18 发布日期:2015-05-18
  • 作者简介:蔡佳,男,讲师,研究方向:水产动物病害防治;E-mail:matrix924@foxmail.com
  • 基金资助:
    广东高校国际合作创新平台项目(2013gjhz0008),十二五国家科技支撑计划(2012BAD17B02),广东教育厅科技创新重点项目(2012CXZD0026)

Cloning and Tissue Expression Analysis of C-type Lectin Gene from Humphead Snapper(Lutjanus sanguineus

Cai Jia1,2,3, Zhang Xueli1,2,3, Wu Zaohe2,3, Jian Jichang1,2,3, Lu Yishan1,2,3, Feng Dongyue4, Jiao Maoxing5   

  1. (1. Fisheries College,Guangdong Ocean University,Zhanjiang 524088;2. Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals,Zhanjiang 524088;3. Key Laboratory of Control for Diseases of Aquatic Economic Animals of Guangdong Higher Education Institutes,Zhanjiang 524088;4. NationalFisheriesTechnical ExtensionCenter,Beijing 100125;5. Yichun University,Yichun 336000)
  • Received:2014-10-11 Published:2015-05-18 Online:2015-05-18

摘要: 根据已知的海水鱼类C型凝集素基因的核苷酸保守区序列设计一对简并引物,先后通过RT-PCR 和RACE PCR法从红笛鲷脾脏中首次克隆获得红笛鲷C型凝集素(CTL)基因的cDNA全长(登录号:AGT37609)。该序列长828 bp,开放阅读框663 bp,编码220个氨基酸。氨基酸序列分析显示,红笛鲷CTL基因氨基酸序列与其他物种CTL的相似性在30%-68%之间。系统进化分析表明,红笛鲷C型凝集素与鳉鱼、条石鲷、斜带石斑鱼 CTL蛋白亲缘关系最近,聚成一支。通过荧光定量PCR 分析红笛鲷基因的组织差异表达,红笛鲷CTL基因在肝、脾以及皮肤中表达水平较高,其次是头肾、肾、胃、肠及肌肉,在心脏与脑中表达量较低。

关键词: 红笛鲷, C型凝集素, 基因克隆, 组织表达分析

Abstract: According to conservative region of known C-type lectin(CTL)gene, a pair of degenerate primers were designed, and full length cDNA sequence of C-type lectin gene was amplified by RT-PCR and RACE PCR from spleen of humphead snapper, Lutjanus sanguineus(GenBank accession number: AGT37609)for the first time. The total cDNA sequence of the gene was 828 bp, consisting of a 663 bp open reading frame(ORF)and encoding 220 amino acids. The deduced amino acid sequence of humphead snapper CTL shared 30%-68% identities with other species CTLs. Phylogenetic analysis showed that humphead snapper CTL was clustered closely with mummichog, rock bream, and orange-spotted grouper CTL. Moreover, the mRNA expression levels in different tissues were analyzed by real time quantitative PCR. The result showed that humphead snapper CTL gene expressed in all tested tissues with highest level in liver, spleen and skin, moderate level in head kidney, kidney, stomach, intestine and muscle, and lowest level in heart and brain.

Key words: Lutjanus sanguineus, C-type lectin, gene cloning, tissue expression analysis