A novel C-type lectin with a YPD motif from Portunus trituberculatus (PtCLec1) mediating pathogen recognition and opsonization

doi:10.1016/j.dci.2020.103609

CORC > 海洋研究所 > 中国科学院海洋研究所 > 实验海洋生物学重点实验室

	A novel C-type lectin with a YPD motif from Portunus trituberculatus (PtCLec1) mediating pathogen recognition and opsonization
	Su, Yue 1,3,4; Liu, Yuan 1,2,3; Gao, Fengtao 1; Cui, Zhaoxia 2,5
刊名	DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
	2020-05-01
卷号	106 页码:17
关键词	Portunus trituberculatus C-type lectin Pathogen recognition Phagocytic activity Antimicrobial peptides
ISSN号	0145-305X
DOI	10.1016/j.dci.2020.103609
通讯作者	Liu, Yuan(liuyuan@qdio.ac.cn)
英文摘要	C-type lectins are a superfamily of Ca2+-dependent carbohydrate-recognition proteins that function as pattern recognition receptors (PRRs) in innate immune system. In this study, a new C-type lectin was identified from the swimming crab Portunus trituberculatus (PtCLec1). The full-length cDNA of PtCLec1 was 873 bp encoding 176 amino acids. The predicted PtCLec1 protein contained a signal peptide and a single carbohydrate-recognition domain with a special YPD motif. The PtCLec1 transcripts were mainly detected in hepatopancreas and its relative expression levels were significantly up-regulated after the challenges of Vibrio alginolyticus, Micrococcus luteus and Pichia pastoris. The recombinant PtCLec1 (rPtCLec1) could bind all the tested pathogen-associated molecular patterns (PAMPs), including lipopolysaccharides (LPS), peptidoglycan (PGN) and glucan (GLU), and microorganisms, including V. alginolyticus, V. parahaemolyticus, Pseudomonas aeruginosa, Staphylococcus aureus, M. luteus and P. pastoris. It also exhibited strong activity to agglutinate bacteria and yeast in a Ca2+-dependent manner, and such agglutinating activity could be inhibited by d-galactose and LPS. Moreover, rPtCLec1 revealed antimicrobial activity against the tested Gram-negative (V. alginolyticus, V. parahaemolyticus and P. aeruginosa) and Gram-positive bacteria (S. aureus and M. luteus), and promoted the clearance of V. alginolyticus in vivo and hemocyte phagocytosis in vitro. Knockdown of PtCLec1 could down-regulate the expression of phagocytosis-related genes, but enhance the expression levels of prophenoloxidase (proPO) system-related genes, mannose-binding lectin (MBL), antimicrobial peptides (AMPs), MyD88 and Relish. All these results indicate that PtCLec1 might act as a PRR in immune recognition and an opsonin in pathogen elimination.
资助项目	National Key R&D Program of China[2018YFD0901304] ; National Natural Science Foundations of China[41776159] ; Applied Basic Research Program of Science and Technology Department of Qingdao[17-1-1-94-jch] ; China Agriculture Research System-48[CARS-48]
WOS研究方向	Fisheries ; Immunology ; Zoology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000517853000006
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/165550]
专题	海洋研究所_实验海洋生物学重点实验室
通讯作者	Liu, Yuan
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Ningbo Univ, Sch Marine Sci, Ningbo 315211, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Su, Yue,Liu, Yuan,Gao, Fengtao,et al. A novel C-type lectin with a YPD motif from Portunus trituberculatus (PtCLec1) mediating pathogen recognition and opsonization[J]. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY,2020,106:17.
APA	Su, Yue,Liu, Yuan,Gao, Fengtao,&Cui, Zhaoxia.(2020).A novel C-type lectin with a YPD motif from Portunus trituberculatus (PtCLec1) mediating pathogen recognition and opsonization.DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY,106,17.
MLA	Su, Yue,et al."A novel C-type lectin with a YPD motif from Portunus trituberculatus (PtCLec1) mediating pathogen recognition and opsonization".DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 106(2020):17.