Cloning,characterization,and expression of themacrophage migration inhibitory factor gene from the Pacific white shrimp Litopenaeus vannamei(Penaeidae) |
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| Authors: | DGZeng AYLei XHChen |
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| Abstract: | The macrophage migration inhibitory factor(MIF)is an important proinflammatory cytokine that mediates both innate and adaptive immune responses.In this study,we identified a homolog of MIF in the Pacific white shrimp Litopenaeus vannamei.The MIF cDNA contained a 363-bp open reading frame encoding a 120-amino acid protein with a calculated molecular mass of 13.442 kDa and a theoretical isoelectric point of 6.57.The L.vannamei MIF shared high amino acid identity with MIFs of other invertebrates.Tissue distribution analysis by quantitative real-time polymerase chain reaction(qRT-PCR)revealed that the L.vannamei MIF was abundantly expressed in the blood,heart,and hepatopancreas,was moderately expressed in the gill,and was weakly expressed in the muscle and intestine.Furthermore,in order to gain a basic understanding of the role of MIF in the shrimp immune response against viral infection,its mRNA expression was determined in the hepatopancreasofL.vannameiatdifferentstagesafter whitespotsyndromevirus(WSSV)challenge usingqRT-PCR.The result indicated that the expression of MIF was significantly upregulated after WSSV injection,suggestingthatMIFmaybeinvolved in theresponsetoviralinfection in shrimp. |
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| Keywords: | Macrophage migration inhibitory factor Cloning Litopenaeus vannamei |
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