A novel C-type lectin from crab Eriocheir sinensis functions as pattern recognition receptor enhancing cellular encapsulation
文献类型：期刊论文
| 作者 | Wang, Leilei1,2; Wang, Lingling1; Zhang, Daoxiang1,2; Li, Fengmei1; Wang, Mengqiang1 ; Huan, Mengmeng1,2; Zhang, Huan1; Song, Linsheng1
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| 刊名 | FISH & SHELLFISH IMMUNOLOGY
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| 出版日期 | 2013-03-01 |
| 卷号 | 34期号:3页码:832-842 |
| 关键词 | Eriocheir sinensis C-type lectin Innate immunity Pattern recognition Cellular encapsulation |
| ISSN号 | 1050-4648 |
| 通讯作者 | Wang, LL |
| 中文摘要 | C-type lectins are a large family of Ca2+-dependent carbohydrate binding proteins which play crucial roles to recognize and eliminate pathogens in innate immunity. In the present study, a novel C-type lectin was identified from Eriocheir sinensis (designated as EsCTL). The full-length cDNA of EsCTL was of 789 bp with an open reading frame of 468 bp encoding a polypeptide of 156 amino acids with a signal sequence and single carbohydrate-recognition domain (CRD). The potential tertiary structure of the CRD adopted a typical double-loop structure with Ca2+-binding site 2 in the long loop region and two conserved disulfide bridges at the bases of the loops. An EPQ motif to determine carbohydrate binding specificity was identified in the CRD of EsCTL. The mRNA transcripts of EsCTL were mainly detected in hepatopancreas and its relative expression level in hemocytes was significantly up-regulated after the challenges of Vibrio anguillarum (P < 0.05) and Pichia pastoris (P < 0.05). The recombinant EsCTL protein (rEsCTL) could bind different PAMPs, including LPS, PGN, beta-glucan, and polyI:C; and also bind various microorganisms including three Gram-positive bacteria, three Gram-negative bacteria and two yeasts. Moreover, rEsCTL could significantly enhance the in vitro encapsulation of crab hemocytes. All these results suggested that EsCTL functioned as an important PRR involved in immune defense against invading pathogen in crab. (c) 2012 Elsevier Ltd. All rights reserved. |
| 英文摘要 | C-type lectins are a large family of Ca2+-dependent carbohydrate binding proteins which play crucial roles to recognize and eliminate pathogens in innate immunity. In the present study, a novel C-type lectin was identified from Eriocheir sinensis (designated as EsCTL). The full-length cDNA of EsCTL was of 789 bp with an open reading frame of 468 bp encoding a polypeptide of 156 amino acids with a signal sequence and single carbohydrate-recognition domain (CRD). The potential tertiary structure of the CRD adopted a typical double-loop structure with Ca2+-binding site 2 in the long loop region and two conserved disulfide bridges at the bases of the loops. An EPQ motif to determine carbohydrate binding specificity was identified in the CRD of EsCTL. The mRNA transcripts of EsCTL were mainly detected in hepatopancreas and its relative expression level in hemocytes was significantly up-regulated after the challenges of Vibrio anguillarum (P < 0.05) and Pichia pastoris (P < 0.05). The recombinant EsCTL protein (rEsCTL) could bind different PAMPs, including LPS, PGN, beta-glucan, and polyI:C; and also bind various microorganisms including three Gram-positive bacteria, three Gram-negative bacteria and two yeasts. Moreover, rEsCTL could significantly enhance the in vitro encapsulation of crab hemocytes. All these results suggested that EsCTL functioned as an important PRR involved in immune defense against invading pathogen in crab. (c) 2012 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Fisheries ; Immunology ; Marine & Freshwater Biology ; Veterinary Sciences |
| 类目[WOS] | Fisheries ; Immunology ; Marine & Freshwater Biology ; Veterinary Sciences |
| 研究领域[WOS] | Fisheries ; Immunology ; Marine & Freshwater Biology ; Veterinary Sciences |
| 关键词[WOS] | SHRIMP LITOPENAEUS-VANNAMEI ; CHINESE MITTEN CRAB ; PROPHENOLOXIDASE-ACTIVATING SYSTEM ; HORNWORM MANDUCA-SEXTA ; INNATE IMMUNE-SYSTEM ; PENAEUS-MONODON ; LIPOPOLYSACCHARIDE-BINDING ; FENNEROPENAEUS-CHINENSIS ; ARGOPECTEN-IRRADIANS ; ANOPHELES-GAMBIAE |
| 收录类别 | SCI |
| 原文出处 | 10.1016/j.fsi.2012.12.010 |
| 语种 | 英语 |
| WOS记录号 | WOS:000316523300011 |
| 公开日期 | 2014-07-17 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/16515]  |
| 专题 | 海洋研究所_实验海洋生物学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Leilei,Wang, Lingling,Zhang, Daoxiang,et al. A novel C-type lectin from crab Eriocheir sinensis functions as pattern recognition receptor enhancing cellular encapsulation[J]. FISH & SHELLFISH IMMUNOLOGY,2013,34(3):832-842. |
| APA | Wang, Leilei.,Wang, Lingling.,Zhang, Daoxiang.,Li, Fengmei.,Wang, Mengqiang.,...&Song, Linsheng.(2013).A novel C-type lectin from crab Eriocheir sinensis functions as pattern recognition receptor enhancing cellular encapsulation.FISH & SHELLFISH IMMUNOLOGY,34(3),832-842. |
| MLA | Wang, Leilei,et al."A novel C-type lectin from crab Eriocheir sinensis functions as pattern recognition receptor enhancing cellular encapsulation".FISH & SHELLFISH IMMUNOLOGY 34.3(2013):832-842. |
入库方式： OAI收割
来源：海洋研究所
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