Multiplex immune-related genes expression analysis response to bacterial challenge in mud crab, Scylla paramamosain

文献类型： 外文期刊

第一作者： Zhang, Fengying

作者： Zhang, Fengying;Jiang, Keji;Sun, Manman;Zhang, Dan;Ma, Lingbo

作者机构：

关键词： Scylla paramamosain;Multiplex genes expression;Immunity

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： Crabs lack an acquired adaptive immune system and host defense is believed to depend entirely on innate, non-adaptive mechanisms to resist invasion by pathogens. Discovery of immune-related factors are helpful for understanding the molecular response of crabs to pathogens. The mud crab Scylla paramamosain is an important marine species for aquaculture in China because of its high nutritional value for humans. In recent years, the crab is prone to being infected by microbes with the enlargement of breeding scale. In this study, eight immune-related genes were analyzed by multiplex genes expression analysis using the GenomeLab GeXP analysis system (Beckman Coulter). The expression levels of all the detected genes rose after challenged by the live bacteria, but the levels of only four genes (C-type lectin, alpha 2-macroglobulin, HSP70 and thioredoxin 1) increased after challenge in heat-killed bacteria group. So the live bacteria were more effective in motivating expressions of immune factors than heat-killed bacteria. However, the transcript of C-type lectin firstly increased at 1 h after challenge in both heat-killed and live bacteria group. This indicated that C-type lectin was a quite susceptive immune factor responding to external pathogen. In group challenged by live bacteria, the genes of alpha 2-macroglobulin, HSP40, thioredoxin 1 and prophenoloxidase activating factor (PPAF) showed response earlier than the other genes. The rise of PPAF expression preceded prophenoloxidase (proPO), which suggested that PPAF might trigger production of proPO transcripts in the early stage of phenoloxidase reaction system. C-type lectin, proPO, thioredoxin 1, HSP40, and alpha 2-macroglobulin are very important immunity factors in response to bacterial infection. According to the result of heat-killed group, HSP70 is a sensitively inductive factor to foreign stimulus compared with the other genes. The multi-gene analysis presented an alternative approach for screening of immune-related genes, and provided a more global overview of genes transcript alteration in response to bacterial challenge. (C) 2012 Elsevier Ltd. All rights reserved.

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