在CpsA中介于由Mycobacterium tuberculosis感染招募的肺髓状细胞
Steven J Grigsby1, G V R Krishna Prasad1, Joshua B Wallach2
1Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA; Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA.
Cell reports
|December 21, 2023
概括
结核菌菌蛋白CpsA有助于细菌从肺部巨细胞和呼吸道传播,延迟适应性免疫力. 它的缺失会损害感染期间的传播和T细胞反应.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 传染性疾病 传染性疾病
背景情况:
- 结核菌 (Mycobacterium tuberculosis,Mtb) 使用毒性因子来逃避宿主免疫力.
- Mtb 蛋白 CpsA 对宿主 NADPH 氧化酶进行保护.
- 在早期感染中,CpsA至关重要,但在以后的完全毒性时,它是不可用的.
研究的目的:
- 研究CpsA在Mtb传播和宿主免疫反应中的作用.
- 了解CpsA如何影响先天性和适应性免疫之间的相互作用.
主要方法:
- 流细胞测量用于分析感染小鼠肺部的Mtb局部.
- 在 ΔcpsA Mtb 感染小鼠中评估了抗原特异性 T 细胞反应.
主要成果:
- 缺乏CpsA的mtb (ΔcpsA Mtb) 在膜巨细胞中被保留.
- ΔcpsA Mtb 显示出对单细胞衍生细胞的扩散受损,以及在气道细胞中的局部化增加.
- 感染 ΔcpsA Mtb 导致抗原特异性 T 细胞减少,这表明适应性免疫延迟.
结论:
- CpsA促进了Mtb从膜巨细胞和气道传播.
- CpsA对于及时生成适应性免疫反应至关重要.
- 由于CpsA缺失等因素,延迟的适应性反应可能会损害对Mtb的强有力的先天反应.
关键词:
CP: 免疫学 免疫学CP: 微生物学 微生物学这是CpsAA.在NADPH氧化酶.航空公司航空公司航空公司膜细胞巨细胞这是先天免疫力.菌根细菌 (mycobacteria) 是一种细菌.结核病是一种肺结核病.更多相关视频
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