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Isolation and characterization of homologous TRBP cDNA for RNA interference in Penaeus monodon

文献类型： 外文期刊

作者： Yang, Lishi 1 ; Li, Xiaolan 1 ; Huang, Jianhua 1 ; Zhou, Falin 1 ; Su, Tianfeng 1 ; Jiang, Shigui 1 ;

作者机构： 1.Chinese Acad Fishery Sci, S China Sea Fisheries Res Inst, Minist Agr, Key Lab S China Sea Fishery Resources Exploitat &, Guangzhou 510300, Guangdong, Peoples R China

2.S China Agr Univ, Guan

关键词： TAR RNA-binding protein 1 (TRBP1);Penaeus monodon;Bacterium;RNAi pathway;White spot syndrome virus (WSSV)

期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.581； 五年影响因子：4.851 ）

ISSN： 1050-4648

年卷期： 2013 年 34 卷 2 期

页码：

收录情况： SCI

摘要： The transactivation response RNA-binding protein (TRBP) interacts with Dicer and binds to double-stranded RNA as a critical component of the RNA-induced silencing complex, which is a key complex in the RNA interference pathway. The full-length cDNA of TRBP from the tiger prawn, Penaeus monodon, (PmTRBP; 1548 bp long with a 1029 bp coding region) was isolated. The encoded polypeptide of 343 amino acids had a predicted molecular mass of 36.8 kDa. Sequence homology and phylogenetic analysis indicated that PmTRBP was evolutionarily closest to TRBP1 from Litopenaeus vannamei, with the three double-stranded RNA-binding motifs that were typical of the TRBP family. Tissue expression profile analysis by quantitative real-time reverse transcription polymerase chain reaction showed that PmTRBP1 was constitutively expressed in all the examined tissues, with a predominant expression in the lymphatic organs and with the weakest expression in the ovaries. Significantly upregulated PmTRBP1 expression was elicited by systemic injections of Staphylococcus aureus, Vibrio vulnificus, and white spot syndrome virus, thereby revealing its pathogen inducibility. Furthermore, exogenous viral nucleoside analogs (high-molecular-weight poly(I:C) dsRNAs as well as R484 single-stranded RNA) were remarkably induced PmTRBP1 transcription at 48 h and 9 h post-injection, respectively, which suggested that PmTRBP1 might function in tiger prawn antibacterial and antiviral response. (C) 2012 Elsevier Ltd. All rights reserved.

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