在结核病感染频谱中识别差异识别的T细胞表位
Sudhasini Panda1, Jeffrey Morgan1, Catherine Cheng1
1Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology, La Jolla, CA, USA.
Nature communications
|January 26, 2024
概括
这项研究确定了特定的Mycobacterium结核病 (Mtb) 抗原,在活性结核病 (ATB) 期间触发T细胞反应. 一个新的池 (ATB116) 显示出对诊断ATB和监测免疫反应的希望.
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:
- 了解Mycobacterium tuberculosis (Mtb) 抗原特异性T细胞反应对于诊断结核病 (TB) 和开发有效疫苗至关重要.
- 关于Mtb抗原在各种感染阶段引起不同的T细胞反应,存在知识差距.
研究的目的:
- 进行Mtb抗原的全蛋白体查,以确定那些在活性结核病 (ATB) 中触发T细胞反应的抗原.
- 为了发现潜在的诊断和免疫监测应用的感染阶段特定的表征.
主要方法:
- 对21名接受ATB治疗的患者进行了20610个Mtb衍生的全蛋白质查.
- 分析了干扰素玛 (IFNγ) 特定的T细胞反应,并评估了ATB患者和干扰素玛释放试验 (IGRA) 阳性/阴性个体之间的差异识别.
- 一个ATB特异性池 (ATB116) 使用专门公认的表位组被开发出来.
主要成果:
- 确定了137种独特的Mtb表位,引起IFNγ特异性T细胞反应.
- 其中16%的表位被多个参与者识别,主要来自细胞壁和细胞过程抗原.
- ATB116池在区分肺部ATB患者和IGRA患者方面表现出超过60%的灵敏度和80%的特异性.
结论:
- 全蛋白质组查有效地确定了Mtb感染阶段特定的表位.
- ATB116池显示出作为活跃结核病的诊断工具的潜力.
- 这些发现有助于理解Mtb特异性免疫反应,并开发新的诊断方法.
更多相关视频
10:37Analysis of HBV-Specific CD4 T-cell Responses and Identification of HLA-DR-Restricted CD4 T-Cell Epitopes Based on a Peptide Matrix
Published on: October 20, 2021
2.9K
09:15Author Spotlight: Optimized Protocol for Detecting Antigen-Specific T Cells in Mouse Lungs Using Tetramers
Published on: July 19, 2024
980
相关概念视频
Pulmonary Tuberculosis IV
143
Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
143
Pulmonary Tuberculosis III
332
Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
The first classification is based on the development of the disease, and it includes the following categories:
332
Pulmonary Tuberculosis II
239
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...
239
Defense 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
