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Two novel calreticulin-related molecules with microbial binding and phagocytosis enhancing capacity in the half-smooth tongue sole, Cynoglossus semilaevis

文献类型: 外文期刊

作者: Wang, Guanghua 1 ; Jiang, Zengjie 2 ; He, Shuwen 1 ; Zhang, Min 1 ;

作者机构: 1.Qingdao Agr Univ, Marine Sci & Engn Coll, 700 Changcheng Rd, Qingdao 266109, Peoples R China

2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China

3.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266071, Peoples R China

关键词: Cynoglossus semilaevis;CsCRTL1;CsCRTL2;Microbial-binding;Phagocytosis enhancing

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: 2018 年 72 卷

页码:

收录情况: SCI

摘要: Calreticulin (CRT) is highly conserved chaperone located in the endoplasmic reticulum. It plays important roles in innate immunity. Although various immune-related functions of CRT have been reported in vertebrates and invertebrates, information on the potential functions of teleost CRT is very limited. In the present study, we characterized two calreticulin-related molecules from tongue sole (Cynoglossus semilaevis), calreticulin-likel and calreticulin-like2 (CsCRTL1 and CsCRTL2). CsCRTLland CsCRTL2 contain signature CRT motifs that are highly conserved in different species. CsCRTLland CsCRTL2 were expressed in liver, head kidney, brain, spleen, heart, muscle, skin, intestine and gills. The expression levels of CsCRTLland CsCRTL2 were highest in liver and spleen, respectively. After stimulation by Vibrio anguillarum and Streptococcus agalactiae, CsCRTL1 and CsCRTL2 were significantly up-regulated. The expression patterns depended on the tissue type, pathogen type, and infection time. The recombinant proteins rCsCRTLland rCsCRTL2 bound to different pathogen-associated molecular patterns (PAMPs) including LPS and PGN, and to different bacteria, such as Gram-negative bacteria V. anguillarum and Gram-positive bacteria Staphylococcus aureus. Moreover, rCsCRTLland rCsCRTL2 significantly enhanced the killing of V. anguillarum by tongue sole macrophages. Our results indicate that CsCRTLland CsCRTL2 play important roles in antibacterial immunity of tongue sole.

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