博雷利亚伯格多弗里与人类状细胞的相互作用:功能性影响
Maria Gutierrez-Hoffmann1,2, Jinshui Fan2, Robert N O'Meally3
1Lyme Disease Research Center, Johns Hopkins University School of Medicine, Baltimore, MD.
Journal of immunology (Baltimore, Md. : 1950)
|July 5, 2023
概括
莱姆病细菌 (Borrelia burgdorferi) 与人类树突细胞 (DCs) 相互作用,改变它们的功能和细胞因子的释放. 这种相互作用形成了一个独特的DC反应,影响莱姆病的适应性免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
背景情况:
- 树突细胞 (DCs) 对于弥合先天性和适应性免疫至关重要,启动T细胞对病原体的反应.
- 纯粹的T细胞激活需要来自DC的三个信号:TCR参与,共刺激和两极化细胞因子.
- 莱姆病病原体Borrelia burgdorferi与DCs之间的相互作用尚未得到充分理解.
研究的目的:
- 研究活体Borrelia burgdorferi与人类单细胞衍生树突细胞 (mo-DCs) 之间的相互作用.
- 在B. burgdorferi暴露后,分析DCs所呈现的免疫组,共刺激/调节分子的变化以及细胞因子概况.
主要方法:
- 活体B. burgdorferi的培养与人类的mo-DCs.
- 与HLA-DR相关的细菌免疫组的分析.
- 对辅助刺激和调节分子表达的评估.
- 使用ELISA或类似的测试进行细胞因子分析.
- 用RNA测序来确定基因表达特征.
主要成果:
- 刺激B. burgdorferi诱导DCs中独特的基因表达特征,与TLR2激动剂刺激不同.
- 暴露于活生生的B. burgdorferi导致亲和抗炎细胞因子的表达.
- DCs表现出像PD-L1,IDO1和Tim3.3这样的免疫调节分子的表达增加.
结论:
- 活生生的B. burgdorferi与mo-DCs的相互作用促进了一个独特的成熟的DC表型.
- 这种独特的DC表型可能会影响人类莱姆病的适应性T细胞反应.
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