结核菌菌的中央新陈代谢是巨细胞灭和宿主免疫的关键调节者
Michelle E Maxson1, Lahari Das2, Michael F Goldberg3
1Program in Cell Biology, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada.
Pathogens (Basel, Switzerland)
|September 28, 2023
概括
结核菌菌的代谢变化会导致宿主细胞死亡. 研究人员发现了新的"功能死亡抑制剂" (fdr) 基因,如fdr8,对细菌生存和毒性至关重要.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 在Mycobacterium结核病 (Mtb) 中的代谢失调导致宿主巨细胞的亡或烧亡.
- 连接mtb毒性和细菌代谢可塑性的精确机制尚未完全理解.
研究的目的:
- 为了识别参与诱导感染巨细胞中热的Mtb基因.
- 阐明细菌代谢在Mtb毒性和宿主免疫反应中的作用.
主要方法:
- 对M. bovis BCG的随机转子体插入突变的查,以找到诱导热的突变.
- 对转子体插入部位的分析,以确定"功能死亡抑制剂" (fdr) 基因.
- 深入研究fdr8基因 (BCG3787/Rv3727) 的功能.
主要成果:
- 确定了一组fdr基因,其中一些编码关键代谢功能.
- 在减少宿主压力下,fdr8基因对于在M. tuberculosis和M. bovis BCG中维持氧化还原平衡至关重要.
- 这项研究将细菌代谢可塑性与Mtb病毒性联系起来.
结论:
- 已识别的fdr基因代表了Mtb代谢可塑性和毒性之间的新联系.
- 由细胞内MTB诱导热与增强的体内细胞免疫力有关.
更多相关视频
10:43Polarization of M1 and M2 Human Monocyte-Derived Cells and Analysis with Flow Cytometry upon Mycobacterium tuberculosis Infection
Published on: September 18, 2020
29.2K
09:34An Automated Culture System for Use in Preclinical Testing of Host-Directed Therapies for Tuberculosis
Published on: August 16, 2021
1.9K
相关概念视频
01:28Pulmonary Tuberculosis II
256
Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
256
01:31Defense Against Bacterial Pathogens
1.4K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
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...
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...
1.4K