中国寄生虫学与寄生虫病杂志 ›› 2013, Vol. 31 ›› Issue (2): 8-120-123.

• 论著 • 上一篇    下一篇

白纹伊蚊唾液腺黏蛋白相关蛋白基因1的克隆、表达分析

刘鉴1,程金芝1,孙宇2,朱儒芳3,张亮4,吴家红1 *   

  1. 1 贵阳医学院寄生虫学教研室,贵阳 550004;2 贵阳医学院附属医院,贵阳 550004;3 贵阳市第二中学,贵阳 550002;4 湖北医药学院,十堰 442000
  • 出版日期:2013-04-30 发布日期:2013-07-02

Cloning and Expression of the Mucin-Related Protein1(Aamucin1)from Salivary Gland of Aedes albopictus

LIU Jian1,CHENG Jin-zhi1,SUN Yu2,ZHU Ru-fang3,ZHANG Liang4,WU Jia-hong1 *   

  1. 1 Department of Parasitology,Guiyang Medical College,Guiyang 550004,China;2 Hospital Affiliated to Guiyang Medical College,Guiyang 550004,China;3 The Second Middle School of Guiyang,Guiyang 550002,China;4 Hubei College of Medicine,Hubei 442000,China
  • Online:2013-04-30 Published:2013-07-02

摘要: 目的  克隆白纹伊蚊唾液腺黏蛋白相关蛋白基因1(Aamucin1)的全长cDNA序列,并分析白纹伊蚊吸血前后基因表达的差异。 方法  根据白纹伊蚊罗马株Aamucin1基因序列(GenBank序列号为AY826068)设计特异引物,提取白纹伊蚊广州株唾液腺总RNA,PCR扩增Aamucin1全长基因序列,并进行生物信息学分析。实时荧光定量RT-PCR分析白纹伊蚊吸血前后Aamucin1基因表达差异。 结果  成功克隆白纹伊蚊广州株基因,并获得全长为849 bp的基因序列,编码283个氨基酸。白纹伊蚊广州株与罗马株Aamucin1基因序列比对在C端少了13个氨基酸。与罗马伊蚊同源序列的一致性为58%;该基因具有1个可变剪接子;Protscan分析示有苏氨酸丰富区,可变剪接子恰位于此区;饱血零时(吸血2 h,腹部饱胀者,为BSG_0组),Aamucin1基因表达显著下调,是吸血前(SG组)的0.39倍(P<0.01);饱血24 h(饱血后24 h,为BSG_24组),Aamucin1基因表达较饱血零时有回升,是吸血前(SG组)的0.61倍(P>0.05)。  结论  获得白纹伊蚊广州株Aamucin1基因全长序列,并证实其在mRNA水平受到吸血调控。

关键词: 白纹伊蚊, 黏蛋白相关蛋白, 克隆, 表达

Abstract: Objective  To clone the mucin-related protein(Aamucin1)gene from salivary gland of Aedes albopictus Guangzhou isolate, and analyze the expression difference due to blood-feeding.  Methods  Total RNA was extracted from the salivary gland. The coding region of Aamucin1 was amplified with a pair of specific primers by RT-PCR. The product was sequenced and analyzed by bioinformatics. Expression analysis was conducted by real-time RT-PCR.  Results  The product of RT-PCR was 849 bp with encoding 283 amino acids. To compare with that from Ae. albopictus Rome strain, 13 amino acids were deleted at the C end, and Aamucin1 in Guangzhou isolate shared 58% identity in amino acids with that of Rome isolate. In addition, an alternative splicing was found in Aamucin1 and located in a proline enrich area by Protscan. To compare with that of non-blood-feeding(group SG), Aamucin1 was significantly down-regulated with 0.39 fold expression at zero time after engorged (group BSG_0, mosquitoes with abdominal distention from the first 2 hours after blood-feeding, P<0.01) and 0.61 fold expression at the 24th hour after engorged(group BSG_24,mosquitoes from the 24th hours after blood-feeding, P>005).  Conclusion  The full length of Aamucin1 gene of Ae. albopictus is cloned and it can be modulated by blood-feeding.

Key words: Aedes albopictus, Mucin-like protein, Cloning, Expression