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Characterization and Transcriptional Analysis of a New CC Chemokine Associated with Innate Immune Response in Cobia (Rachycentron canadum)

文献类型: 外文期刊

作者: Su, Y. 1 ; Feng, J. 1 ; Sun, X. 2 ; Guo, Z. 3 ; Xu, L. 1 ; Jiang, J. 1 ;

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

2.Guangdong Prov Aquat Anim Epidem Dis Prevent & Co, Guangzhou 510222, Guangdong, Peoples R China

3.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Minist Agr, Key Lab Aquat Prod Proc, Guangzhou 510300, Guangdong, Peoples R China

关键词: CC chemokine;cloning;gene expression;cobia;innate immunity

期刊名称:MOLECULAR BIOLOGY ( 影响因子:1.374; 五年影响因子:1.266 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: Chemokines are small, secreted cytokine peptides, known principally for their ability to induce migration and activation of leukocyte populations under both pathological and physiological conditions. On the basis of previously constructed express sequence tags (ESTs) of the head kidney and spleen cDNA library of the perciform marine fish Rachycentron canadum (common name cobia). We used bi-directional rapid amplification of cDNA ends (RACE) and obtained a full-length cDNA of a new CC chemokine gene (designated RcCC3). The RcCC3 putative peptide exhibits sequence similarity to the group of CCL19/21/25 CC chemokines. The reverse transcription quantitative polymerase chain reaction (RT-qPCR) was used in transcript expression studies of RcCC3. We examined the constitutive expression of the transcripts in 12 tissues of non-stressed cobia; RcCC3 transcripts were detected in all tissues examined, with the highest expression in gill and liver, following by head kidney, kidney, spleen, skin, intestine, muscle, stomach, heart, blood and brain. Transcript expression of RcCC3 was examined in immune-related organs, including head kidney, spleen and liver, following intraperitoneal injection of phosphate-buffered saline (control), polyriboinosinic polyribocytidylic acid (poly(I:C)) and formalin-killed Vibrio carchariae (bacterial vaccine). The transcripts in these tissues were quickly up-regulated by the injection of poly(I:C) and bacterial vaccine at early time points, although with different expression profiles. These results indicate RcCC3 represents an important component of innate immunity in cobia.

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