相关实验视频

Updated: Jun 1, 2025

Measuring Mitochondrial Function of Naïve and Effector CD8 T Cells

Measuring Mitochondrial Function of Naïve and Effector CD8 T Cells

Published on: March 28, 2025

免疫衰竭悖论:在慢性细菌感染期间激活功能

María L Ruiz-de la Cruz¹, Mario César Salinas-Carmona¹

¹Department of Immunology, School of Medicine and Dr. Jose Eleuterio Gonzalez University Hospital, Universidad Autónoma de Nuevo León, Monterrey, Mexico.

Journal of infection in developing countries

|January 20, 2025

概括

像CTLA-4和PD-1这样的免疫检查点在感染和癌症中调节T细胞. 在结核病中,IL-12增强了这些检查点,可能会影响免疫反应和治疗策略.

科学领域:

免疫学免疫学免疫学
微生物学微生物学
在瘤学瘤学.

背景情况:

免疫检查点,包括CTLA-4和PD-1,是慢性病毒感染和癌症中T细胞和髓状细胞活性的关键调节者.
它们在慢性细菌感染,尤其是Mycobacterium tuberculosis (Mtb) 中的作用不太清楚.
细胞因子环境显著影响结核病中的共抑制分子表达.

研究的目的:

探索免疫检查点在慢性细菌感染,特别是结核病中的作用.
研究细胞因子微环境如何影响Mtb感染中的共抑制分子表达.
检查癌症治疗中使用的免疫检查点抑制剂 (ICI) 的交叉点及其对结核病的潜在影响.

主要方法:

在Mtb抗原的背景下对共抑制分子表达的细胞因子介导调节的分析.
关于免疫检查点在慢性炎症和感染中的作用的文献评论.
讨论癌症免疫疗法 (ICI) 对结核病再激活的潜在影响.

主要成果:

介质蛋白-12 (IL-12) 可以在Mtb抗原存在时增强共抑制分子表达,同时保持CD4+T细胞效应体和记忆表型.
同抑制分子表达对于控制慢性细菌感染中的炎症至关重要.
罕见的报道表明,癌症治疗中使用的ICI与结核病重新激活之间存在潜在联系.

结论:

细胞因子微环境,特别是IL-12,调节结核病中的免疫检查点表达.
免疫检查点分子在慢性细菌感染中起到保护性"车"的作用,与它们在癌症引起的疲劳中的作用形成鲜明对比.
了解这些机制对于管理结核病和免疫疗法的潜在副作用至关重要.

关键词:

在 CTLA-4 中.在PD-1中使用PD-1.在PD-L1中.疲疲疲疲疲细胞内细胞内细胞.

更多相关视频

Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice

Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice

Published on: June 22, 2016

Immunometabolic Circuits in Infection for Advancing Host Directed Therapies

Immunometabolic Circuits in Infection for Advancing Host Directed Therapies

Published on: September 13, 2024

相关概念视频

Defense Against Bacterial Pathogens

Defense Against Bacterial Pathogens

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...

Factors Affecting the Risk of Infection

Factors Affecting the Risk of Infection

The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...

Antibiotic Selection

Antibiotic Selection

Pulmonary Tuberculosis I

Pulmonary Tuberculosis I

Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...

Desensitization and Tachyphylaxis

Desensitization and Tachyphylaxis

Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.

Chronic Bowel Disorders: Introduction

Chronic Bowel Disorders: Introduction

Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...