菌根菌调节SUMOylation以抑制树突细胞中的保护性反应
Vandana Anang1, Aayushi Singh1, Ankush Kumar Rana1
1Infectious Disease Immunology Lab, Dr. B.R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi, India.
菌根菌利用宿主SUMOylation来逃避免疫反应. 在树突细胞中抑制SUMOylation可以增强保护性免疫力并减少细菌负载,这揭示了菌根菌体防御逃避的关键漏洞.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 微生物学 微生物学
背景情况:
- 病原体利用翻译后修饰 (PTM) 来逃避宿主免疫力.
- 关键的PTMSUMOylation调节细胞过程,但其在对抗细菌的宿主防御中的作用尚未完全理解.
研究的目的:
- 研究宿主SUMOylation在树突细胞 (DC) 防御机制对抗菌根菌感染中的作用.
- 为了确定抑制SUMOylation是否可以增强免疫反应并减少细菌负担.
主要方法:
- 使用了小鼠骨髓衍生干细胞 (BMDC) 和THP-1巨细胞.
- 评估的蛋白质含量 (西方斑点),细菌负荷 (聚焦显微镜,CFU),氧化爆发,细胞因子产生 (ELISA) 和亡/自标志物.
- 测量了ROS,协同刺激分子 (流动细胞计) 和T细胞原始化.
主要成果:
- 菌根细菌刺激或感染增加了DCs中的宿主蛋白SUMOylation.
- 抑制SUMOylation显著降低了细胞内真菌菌荷载.
- 抑制增强了DC免疫反应,包括氧化突发,促炎性细胞因子释放,共刺激分子表达和MAPK/STAT1激活.
- 抑制SUMOylation促进了DC亡和自,并改善了T细胞介导的细菌清除.
结论:
- 菌根杆菌利用宿主SUMOylation途径来抑制免疫反应.
- 在DC中向SUMOylation代表了克服菌根菌体免疫逃避和增强宿主防御的潜在策略.
更多相关视频
06:26Author Spotlight: Optimizing CFU Determination for Efficient Assessment of TB Vaccine Efficacy and Antigen Presentation Analysis
Published on: July 28, 2023
07:42Fluorescence Assays for the Study of Mycobacterium tuberculosis Interaction with the Immune Receptor SLAMF1
Published on: February 28, 2025
相关概念视频
Defense Against Bacterial Pathogens
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Inflammatory Response
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Gene Regulation in Microbial Communities: Quorum Sensing
Abnormal Proliferation
Cytotoxic T Cells-mediated Immune Response
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
T Cell Types and Functions
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
