Borrelia burgdorferi basic membrane protein A stimulates murine macrophage to secrete specific chemokines.

Borrelia burgdorferi basic membrane protein A stimulates murine macrophage to secrete specific chemokines.
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伯氏疏螺旋体碱性膜蛋白A刺激小鼠巨噬细胞分泌特异性趋化因子

DOI:
10.7150/ijms.26657
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发表时间:
2018
影响因子:
3.6
通讯作者:
Manzama-Esso A
Manzama-Esso A
中科院分区:
医学4区
文献类型:
--
作者:
Peng Y;Liang Z;Liu A;Li E;Dai X;Bai R;Ji Z;Jian M;Ma M;Tao L;Bao F;Wang F;Bi Y;Ding Z;Manzama-Esso A

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在这项研究中,我们研究了小鼠巨噬细胞系RAW264.7在体外暴露于重组伯氏疏螺旋体碱性膜蛋白A(RBmpA)时产生促炎介质的机制。利用高通量检测RAW264.7细胞培养上清液中25种趋化因子的抗体蛋白芯片技术,在rBmpA刺激后12和24 h,我们鉴定出两种趋化因子:单核细胞趋化蛋白-5(MCP-5/CCL12)和巨噬细胞炎性蛋白-2(MIP-2/CXCL2),两者在刺激后均显著升高。然后我们选择了这两种趋化因子进行进一步的研究。酶联免疫吸附试验和实时定量聚合酶链式反应显示,随着rBmpA浓度的增加,MCP-5/CCL12和MIP-2/CXCL2呈浓度依赖性增加(p<0.01)。结果表明,rBmpA可刺激多种特异性趋化因子的分泌,并诱导莱姆关节炎。
In this study, we investigated the mechanisms that lead to the production of proinflammatory mediators by the murine macrophage cell line, RAW264.7, when these cells are exposed in vitro to recombinant Borrelia burgdorferi basic membrane protein A (rBmpA). Using antibody protein microarray technology with high-throughput detection ability for detecting 25 chemokines in culture supernatant the RAW264.7 cell culture supernatants at 12 and 24 h post-stimulation with rBmpA, we identified two chemokines, a monocyte chemoattractant protein-5 (MCP-5/CCL12) and a macrophage inflammatory protein-2 (MIP-2/CXCL2), both of which increased significantly after stimulation. We then chose these two chemokines for further study. Enzyme-linked immunosorbent assay and real-time polymerase chain reaction revealed that with the increase of rBmpA concentration, MCP-5/CCL12 and MIP-2/CXCL2 showed concentration-dependent increases (p <0.01).Our results indicate that the rBmpA could stimulate the secretion of several specific chemokines and induce Lyme arthritis.
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