针对LAIR1介导的免疫抑制,为我们的免疫疗法武器库增加了一种新武器
The Journal of clinical investigation
|August 19, 2025
概括
白细胞相关的Ig类受体1 (LAIR1) 抑制免疫反应. 在侵袭性脑瘤中阻断LAIR1减少了免疫抑制细胞,增强了CAR T细胞治疗,并改善了小鼠的生存率.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 癌症生物学 癌症生物学
背景情况:
- 白细胞相关Ig类受体1 (LAIR1) 是一种抑制性免疫受体,它结合原并抑制细胞激活.
- 瘤相关巨细胞 (TAMs) 经常表现出一种免疫抑制的M2类表型,有助于瘤免疫逃避.
研究的目的:
- 为了研究LAIR1抑制信号在M2类TAMs中的作用,在侵袭性脑瘤中.
- 评估针对LAIR1在癌症免疫治疗中的治疗潜力.
主要方法:
- 使用了LAIR1淘汰赛 (KO) 鼠标模型.
- 采用了LAIR1.1的抗体封锁.
- 开发出含有LAIR1抑制模块的嵌合式抗原受体 (CAR) T细胞.
主要成果:
- 抑制LAIR1 (KO,抗体阻断,CAR T细胞疗法) 增加了抗瘤活性.
- 准LAIR1减少了免疫抑制M2类TAMs的种群.
- 在老鼠模型中,LAIR1阻塞改变了瘤原蛋白网络,并提高了生存率.
结论:
- 在侵袭性脑瘤中,LAIR1抑制信号对免疫抑制M2类TAMs的功能至关重要.
- 向LAIR1代表了一种新的免疫治疗策略,以克服瘤免疫逃避.
- 将LAIR1抑制与CAR T细胞治疗结合起来,有望改善癌症治疗.
相关概念视频
Tumor Immunotherapy
660
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.
660
Cell-mediated Immune Responses
72.4K
Overview
72.4K
T Cell Types and Functions
1.4K
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...
1.4K
Immunodeficiency Diseases
1.2K
Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency...
There are three main causes of immunodeficiency...
1.2K
Cytotoxic T Cells-mediated Immune Response
1.9K
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...
1.9K


