Functional characterization of short-type peptidoglycan recognition proteins (PGRPs) from silkworm Bombyx mori in innate immunity

被引：16
作者：
Zhang, Ruo-Nan [1 ]
Li, Cai-ting [1 ]
Ren, Fei-fei [1 ]
Ye, Ming-Qiang [2 ]
Deng, Xiao-juan [1 ]
Yi, Hui-Yu [1 ]
Cao, Yang [1 ]
Yang, Wan-Ying [1 ]
机构：
[1] South China Agr Univ, Lab Insect Mol Biol & Biotechnol, Guangdong Prov Key Lab Agroanim Genom & Mol Breed, Coll Anim Sci, Guangzhou 510642, Guangdong, Peoples R China
[2] Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Guangzhou 510642, Guangdong, Peoples R China
来源：
DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY | 2019年 / 95卷
关键词：
Peptidoglycan recognition protein; Short-type; Bombyx mori; Innate immunity; Phagocytosis; GRAM-POSITIVE BACTERIA; DROSOPHILA TOLL; GENE FAMILIES; PHAGOCYTOSIS; ACTIVATION; IDENTIFICATION; EXPRESSION; RECEPTOR; DEFENSE; PATHWAY;
D O I：
10.1016/j.dci.2019.01.015
中图分类号：
S9 [水产、渔业];
学科分类号：
0908 ;
摘要：
Peptidoglycan recognition proteins (PGRPs) are members of an important class of pattern recognition receptors in insects that can specifically recognize peptidoglycan (PGN) in bacterial cell walls and participate in immune regulation and bacterial clearance. Although the role of PGRPs in regulating the innate immune response in Drosophila melanogaster has been studied, little is known regarding PGRPs in Lepidoptera species. In this study, five short (S)-type Bombyx mori PGRPs (BmPGRPs) were cloned, expressed, and evaluated for their function in innate immunity. B. mori larvae that were injected with the gram-positive bacterium Bacillus megaterium or the gram-negative bacterium Escherichia coli exhibited a rapid and significant upregulation in S-type BmPGRP expression. The results showed that the five evaluated BmPGRPs have significant agglutination activity toward E. coli and B. megaterium and more notable amidase activity toward meso-diarninopimelic acid peptidoglycan (DAP-PGN). Furthermore, only in the presence of BmPGRP-S5 did B. mori larval hemocytes exhibit significant phagocytosis against E. coli and B. megaterium.
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收藏
页码：59 / 67
页数：9
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