文献类型： 外文期刊
作者： Ou, Mi 1 ; Huang, Rong 2 ; Luo, Qing 1 ; Xiong, Lv 2 ; Chen, Kunci 1 ; Wang, Yaping 2 ;
作者机构： 1.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Minist Agr, Key Lab Trop & Subtrop Fishery Resources Applicat, Guangzhou 510380, Guangdong, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
关键词： Rare minnow; GCRV; SRB1; Receptor; Cell entry
期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.581； 五年影响因子：4.851 ）
ISSN： 1050-4648
年卷期： 2019 年 89 卷
页码：
收录情况： SCI
摘要： Scavenger receptor class B type 1 (SRB1) is a transmembrane protein belonging to the scavenger receptors (SRs) family and it plays an important role in viral entry. Not much is known on SRB1 in teleost fish. Grass carp reovirus (GCRV) cause huge economic losses in grass carp industry. In this study, rare minnow (Gobiocypris rarus) was used as a model fish to investigate the mechanism of GCRV infection, which is sensitive to GCRV. The structure of SRB1 gene in G. rarus (GrSRB1) was cloned and elucidated. GrSRB1 is composed of 13 exons and 12 introns, and its full-length cDNA is 2296 bp in length, with 1521 bp open reading frame (ORF) that encodes a 506 amino acid protein. The GrSRB1 protein is predicted to contain a typical CD36 domain and two transmembrane regions. In G. rarus, GrSRB1 is expressed strongly in the liver (L), intestines (I), brain (B) and muscle (M), while it is expressed poorly in the heart (H), middle kidney (MK), head kidney (HK) and gills (G). After infection with GCRV, GrSRB1 expression was up-regulated in main immune tissues during the early infection period. Moreover, co-immunoprecipitation assays revealed that GrSRB1 could interact with the outer capsid protein of GCRV (VP5 and VP7). These results suggest that GrSRB1 could be a receptor for GCRV. We have managed to characterize the GrSRB1 gene and provide evidence for its potential functions for GCRV entry into host cells.
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