Molecular cloning, characterization and expression of a novel serine proteinase inhibitor gene in bay scallops (Argopecten irradians, Lamarck 1819)

doi:10.1016/j.fsi.2005.05.009

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	Molecular cloning, characterization and expression of a novel serine proteinase inhibitor gene in bay scallops (Argopecten irradians, Lamarck 1819)
	Zhu, L ; Song, LS ; Chang, YQ ; Xu, W ; Wu, LT
	2006-03-01
发表期刊	FISH & SHELLFISH IMMUNOLOGY
ISSN	1050-4648
卷号	20 期号:3 页码:320-331
文章类型	Article
摘要	Serine protease inhibitors, critical regulators of endogenous proteases, are found in all multicellular organisms and play crucial roles in host physiological and immunological effector mechanisms. The first mollusk serine proteinase inhibitor (designated AISPI) cDNA was obtained from the bay scallop Argopecten irradians by randomly sequencing a whole tissue cDNA library and rapid amplification of cDNA ends (RACE). The full-length cDNA of the scallop serine protease inhibitor was 1020 bp, consisting of a 5'-terminal untranslated region (UTR) of 39 bp, a 3'-terminal UTR of 147 bp with a canonical polyadenylation signal sequence AATAAA and a poly(A) tail, and an open reading frame of 834 bp. The AISPI cDNA encoded a polypeptide of 278 amino acids with a putative signal peptide of 22 amino acids and a mature protein of 256 amino acids. The deduced amino-acid sequence of AISPI contained six tandem and homologous domains similar to that of Kazal-type serine protease inhibitors, including the conserved sequence C-X(7)-C-X(6)-Y-X(3)-C-X(2,3)-C and six cysteine residues responsible for the formation of disulfide bridges, indicating that the AISPI protein from bay scallop should be a member of the Kazal-type serine protease inhibitor family. The temporal expression of AISPI was measured by semi-quantitative RT-PCR after injury or bacterial challenge. After the adductor muscle was wounded or injected with Vibrio anguillarum, the expression of AISPI mRNA in hemolymph was up-regulated and reached the maximum level at 8 and 16 h, respectively, and then progressively dropped back to the original level. The results indicated that AISPI could play an important role in injury healing and immune response in mollusks as it could be induced by injury and bacterial challenge. (c) 2005 Elsevier Ltd. All rights reserved.; Serine protease inhibitors, critical regulators of endogenous proteases, are found in all multicellular organisms and play crucial roles in host physiological and immunological effector mechanisms. The first mollusk serine proteinase inhibitor (designated AISPI) cDNA was obtained from the bay scallop Argopecten irradians by randomly sequencing a whole tissue cDNA library and rapid amplification of cDNA ends (RACE). The full-length cDNA of the scallop serine protease inhibitor was 1020 bp, consisting of a 5'-terminal untranslated region (UTR) of 39 bp, a 3'-terminal UTR of 147 bp with a canonical polyadenylation signal sequence AATAAA and a poly(A) tail, and an open reading frame of 834 bp. The AISPI cDNA encoded a polypeptide of 278 amino acids with a putative signal peptide of 22 amino acids and a mature protein of 256 amino acids. The deduced amino-acid sequence of AISPI contained six tandem and homologous domains similar to that of Kazal-type serine protease inhibitors, including the conserved sequence C-X(7)-C-X(6)-Y-X(3)-C-X(2,3)-C and six cysteine residues responsible for the formation of disulfide bridges, indicating that the AISPI protein from bay scallop should be a member of the Kazal-type serine protease inhibitor family. The temporal expression of AISPI was measured by semi-quantitative RT-PCR after injury or bacterial challenge. After the adductor muscle was wounded or injected with Vibrio anguillarum, the expression of AISPI mRNA in hemolymph was up-regulated and reached the maximum level at 8 and 16 h, respectively, and then progressively dropped back to the original level. The results indicated that AISPI could play an important role in injury healing and immune response in mollusks as it could be induced by injury and bacterial challenge. (c) 2005 Elsevier Ltd. All rights reserved.
关键词	Argopecten Irradians Serine Proteinase Inhibitor Kazal-type Mrna Expression Injury Healing Immune Response
学科领域	Fisheries ; Immunology ; Marine & Freshwater Biology ; Veterinary Sciences
DOI	10.1016/j.fsi.2005.05.009
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000233511800006
引用统计	被引频次：53[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/5992
专题	实验海洋生物学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Dalian Fisheries Coll, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Zhu, L,Song, LS,Chang, YQ,et al. Molecular cloning, characterization and expression of a novel serine proteinase inhibitor gene in bay scallops (Argopecten irradians, Lamarck 1819)[J]. FISH & SHELLFISH IMMUNOLOGY,2006,20(3):320-331.
APA	Zhu, L,Song, LS,Chang, YQ,Xu, W,&Wu, LT.(2006).Molecular cloning, characterization and expression of a novel serine proteinase inhibitor gene in bay scallops (Argopecten irradians, Lamarck 1819).FISH & SHELLFISH IMMUNOLOGY,20(3),320-331.
MLA	Zhu, L,et al."Molecular cloning, characterization and expression of a novel serine proteinase inhibitor gene in bay scallops (Argopecten irradians, Lamarck 1819)".FISH & SHELLFISH IMMUNOLOGY 20.3(2006):320-331.

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