MAIT细胞与COPD相关的NSCLC中对新辅助免疫疗法的反应有关
Yanze Yin1, Ao Zeng1, Abudumijiti Abuduwayiti1
1Department of Thoracic Surgery, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China.
Cancer medicine
|March 21, 2024
概括
患有非小细胞肺癌和慢性阻塞性肺病的患者对免疫疗法反应更好,这与CD8+MAIT细胞增加有关. 这些细胞显示免疫衰竭,表明新的免疫治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 肺部病理学 肺部病理学
背景情况:
- 患有非小细胞肺癌 (NSCLC) 和慢性阻塞性肺病 (COPD) 的患者表现出不同的临床结果和免疫治疗反应.
- 粘膜关联不变T细胞 (MAIT) 是抗感染和抗瘤免疫的关键参与者.
研究的目的:
- 调查COPD相关的NSCLC中MAIT细胞分布.
- 为了确定MAIT细胞参与这个患者群体内的免疫反应.
主要方法:
- 在NSCLC组织样本 (有/没有COPD) 上利用流细胞计,免疫组织化学和免疫光学.
- 使用小鼠皮下瘤模型用5-OP-RU刺激MAIT细胞,并评估抗PD1免疫治疗效果.
主要成果:
- 瘤显示MAIT细胞透率较高,主要是CD8+MAIT细胞 (>90%).
- 患有COPD的NSCLC患者的CD8+MAIT细胞数量增加,但激活/功能标记物 (CD69,GZMB,IFNγ) 减少,PD1表达增加.
- 慢性肺炎患者表现出更好的免疫疗法反应率和完全/部分反应;MAIT水平与病理反应相关.
结论:
- 在患有COPD的NSCLC中,免疫疗法反应与CD8+MAIT细胞积累和免疫衰竭有关.
- 这些发现表明,在这个人群中,针对CD8+MAIT细胞的新型免疫疗法具有潜力.
相关概念视频
Tumor Immunotherapy
524
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
524
Cytotoxic T Cells-mediated Immune Response
907
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
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...
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...
907
T Cell Activation and Clonal Selection
726
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
726
Antigens Involved in Adaptive Immunity
489
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and...
Complete Antigens
Complete antigens possess both immunogenicity and...
489


