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Inhibitory effect of BMAP-28 on Leptospiral Lipopolysaccharide-Induced TLR2-Dependent Immune Response in Bovine Cells.


ABSTRACT: BACKGROUND:Bovine leptospirosis is a widespread zoonotic disease, leading to serious economic losses in animal production and causing potential hazards to human health. Leptospiral lipopolysaccharide (L-LPS) plays an important role in leptospirosis pathogenicity. OBJECTIVES:With respect to L-LPS endotoxin-like activity, we examined bovine immune response to L-LPS and the inhibitory ability of bovine myeloid antimicrobial peptide-28 (BMAP-28) against L-LPS-induced immune activation in bovine cells. MATERIALS AND METHODS:In this study, L-LPS-induced proinflammatory cytokine production in bovine cells was quantitatively measured with real-time PCR and ELISA, and we determined which cell membrane receptors (toll-like receptor [TLR]2 and TLR4) played a major role. In addition, the ability of BMAP-28 to inhibit L-LPS-induced endotoxin-like immune activation in bovine cells was determined by the decrease in cytokine secretion. RESULTS:L-LPS showed the ability to induce cytokine production in bovine cells, and its induction was TLR2-dependent. BMAP-28 was used to inhibit L-LPS-induced endotoxin-like activity. The function of BMAP-28 was to inhibit LPS-induced TLR2 expression and cytokine production. CONCLUSIONS:In this study, the L-LPS immune response of bovine cells was significant, indicating that TLR2 is the predominant receptor for L-LPS. Due to L-LPS endotoxin-like activity, we found a strategy through using BMAP-28 to prevent L-LPS-induced TLR2-dependent immune activation in bovine cells.

SUBMITTER: Guo Y 

PROVIDER: S-EPMC5013549 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature

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Inhibitory effect of BMAP-28 on Leptospiral Lipopolysaccharide-Induced TLR2-Dependent Immune Response in Bovine Cells.

Guo Yijie Y   Ding Cuiping C   Zhang Bo B   Xu Jun J   Xun Meng M   Xu Jiru J  

Jundishapur journal of microbiology 20160621 6


<h4>Background</h4>Bovine leptospirosis is a widespread zoonotic disease, leading to serious economic losses in animal production and causing potential hazards to human health. Leptospiral lipopolysaccharide (L-LPS) plays an important role in leptospirosis pathogenicity.<h4>Objectives</h4>With respect to L-LPS endotoxin-like activity, we examined bovine immune response to L-LPS and the inhibitory ability of bovine myeloid antimicrobial peptide-28 (BMAP-28) against L-LPS-induced immune activation  ...[more]

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