Equus beta-Defensin-1 Regulates Innate IMMUNE Response in S. aureus-Infected Mouse Monocyte Macrophage
文献类型: 外文期刊
作者: Pei, Le 1 ; Liu, Kun 3 ; Wei, Wei 1 ; Su, Hong 1 ; Li, Feng 2 ; Feng, Ying 2 ; Wang, Daqing 2 ; Li, Xiunan 2 ; Hou, Yongyue 2 ; Cao, Guifang 1 ;
作者机构: 1.Inner Mongolia Agr Univ, Coll Vet, Inner Mongolia Key Lab Basic Vet Med, Hohhot 010010, Peoples R China
2.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot 010010, Peoples R China
3.Inner Mongolia Med Univ, Sch Publ Hlth, Hohhot 010010, Peoples R China
关键词: beta-defensin-1; Equus; S. aureus-infected; immune response
期刊名称:ANIMALS ( 影响因子:3.231; 五年影响因子:3.312 )
ISSN: 2076-2615
年卷期: 2022 年 12 卷 21 期
页码:
收录情况: SCI
摘要: Beta-defensin-1 (BD-1) is among the class of antibacterial peptides that are rich in disulfide bonds, have direct antibacterial activity and showed enhanced expression following external stimulation. However, existing research studies only treated BD-1 to cell models without stimulation from pathogen-associated molecular patterns (PAMPs), which will further influence our understanding of the role of BD-1. In this study, we map the tissue distribution of Equus BD-1 (i.e., eBD-1, ass ED-1, and mule BD-1) and compare their expression levels in various tissues. We further characterize the three kinds of Equus BD-1 by analyzing their full-length cDNA. We showed that eBD-1, ass ED-1, and mule ED-1 have an identical (100%) open reading frame (ORF). The ORF encoding OEBD-1 expressed the ORF in the E. coli Top10 expression system. This expression system was combined with an S. aureus-infected J774A.1 macrophage cell line to determine the influence on innate immune mediator expression. Using this expression model system, it was determined that the OEBD-1 protein enhanced IL-6 and TNF-alpha secretion. It can also promote TLR2, CCL2, CCL7, CXCL10 and NF-kappa B p65 mRNA expression. Moreover, OEBD-1 upregulates phosphorylation of ATK, Syk and I kappa B-alpha. In addition, OEBD-1 enhances the macrophage's ability to phagocytose S. aureus. In conclusion, Equus BD-1 was shown to play an essential role in macrophage-involved innate immune responses in an in vitro system.
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