阻断CD226调节2型先天性淋巴细胞效应器功能,并缓解气道过度反应
Yoshihiro Sakano1, Kei Sakano1, Benjamin P Hurrell1
1Department of Molecular Microbiology and Immunology, Keck School of Medicine of the University of Southern California, Los Angeles, Calif.
The Journal of allergy and clinical immunology
|January 20, 2024
概括
阻断CD226通过向2型先天性淋巴细胞 (ILC2s) 来减少呼吸道过敏反应. 这种分子在喘中被上调,使其成为过敏性喘的潜在治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 过敏研究 研究过敏
背景情况:
- 2型先天性淋巴细胞 (ILC2) 是2型喘中的关键参与者.
- CD226是一种与炎症相关的辅助刺激分子.
研究的目的:
- 研究小鼠和人类ILC2s中的CD226表达和功能.
- 评估针对ILC2介导的气道过敏反应 (AHR) 的CD226的治疗潜力.
主要方法:
- 向小鼠注射IL-33,随后进行抗CD226抗体治疗.
- 使用RNA测序和流细胞计分析了肺部ILC2s.
- 在小鼠模型和人类样本中评估了CD226对AHR和炎症的影响.
主要成果:
- 在激活的ILC2中,CD226表达是可诱导的,增强细胞因子分泌和效应器功能.
- CD226调节细胞内的新陈代谢和信号通路 (PI3K/AKT,MAPK).
- 阻断CD226改善了依赖ILC2的AHR,并减少了人类ILC2s中的细胞因子产生.
- 在喘患者的ILC2中观察到CD226表达的升高.
结论:
- CD226是过敏性喘的一个有前途的治疗点.
- 针对CD226提供了一种改善AHR的潜在策略.
相关概念视频
Drugs Used in Lower Respiratory Disorders: Overview
445
Lower respiratory tract disorders present challenges that often require skilled and nuanced approaches for effective management. Common ailments, such as asthma and chronic obstructive pulmonary disease (COPD), have prompted the development of intricate treatment strategies involving bronchodilators and anti-inflammatory drugs, each tailored to ease breathing and revitalize the lungs.
Bronchodilators, the first step of respiration enhancement, come in various forms, each with its own mechanism...
Bronchodilators, the first step of respiration enhancement, come in various forms, each with its own mechanism...
445
Antiasthma Drugs: Leukotriene Modifiers
302
Leukotriene modifiers, or cysteinyl leukotriene receptor antagonists, are medications used to manage chronic asthma. These agents target specific inflammatory mediators produced during arachidonic acid metabolism, an essential process in generating inflammation in the body.
Leukotriene modifiers work through two distinct mechanisms:
Leukotriene modifiers work through two distinct mechanisms:
302
Antiasthma Drugs: Mast Cell Stabilizers and Anti-IgE Drugs
299
Asthma is a chronic respiratory condition for which new therapeutic avenues, including anti-inflammatory drugs like mast cell stabilizers and anti-IgE treatments, continue to be developed.
Mast cell stabilizers, such as cromolyn (also known as sodium cromoglycate) and nedocromil (Tilade), are effective drugs in asthma management. These stabilizers hinder histamine release by skillfully obstructing the activation of mast cells and other cellular entities. Notably, they navigate this task without...
Mast cell stabilizers, such as cromolyn (also known as sodium cromoglycate) and nedocromil (Tilade), are effective drugs in asthma management. These stabilizers hinder histamine release by skillfully obstructing the activation of mast cells and other cellular entities. Notably, they navigate this task without...
299
T Cell Types and Functions
1.0K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
1.0K
B Cell Activation and Differentiation
1.7K
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
1.7K
Inflammatory Response
2.0K
An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
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,...
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,...
2.0K


