解读PGRN在调节CD8+ T细胞抗瘤免疫力中的潜在作用
Wenyu Zhang1,2, Huan Qin1,2, Guosheng Wang1,2
1Department of Pulmonary and Critical Care Medicine, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200092, China.
Cell death discovery
|May 14, 2024
概括
进激素 (PGRN) 是一种新的标,用于增强肺癌中CD8+T细胞抗瘤免疫力. 缺少PGRN可以增强T细胞活性,克服对免疫检查点阻塞 (ICB) 疗法的抵抗力.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 免疫检查点阻断 (ICB) 治疗耐药性与瘤微环境 (TME) 中的CD8+T细胞耐受性有关.
- 提升T细胞上的共抑制受体的调节有助于这种免疫抑制.
- 确定调节T细胞反应的新目标对于改善癌症治疗结果至关重要.
研究的目的:
- 调查Progranulin (PGRN) 作为一种共抑制分子在调节CD8+T细胞抗瘤反应中的作用.
- 评估PGRN作为克服肺癌中ICB耐药性的潜在治疗标.
主要方法:
- 使用了一个体内皮下移植的肺癌模型.
- 评估了瘤透的CD8+T细胞上的PGRN表达.
- 产生了缺少PGRN (PGRN-/-) 的小鼠来研究其功能影响.
- 测量了CD8+ T细胞的透,增殖,迁移,激活和亡.
- 分析了T细胞化学激素CCL3.3的产生.
- 研究了与PD-L1抑制剂的协同效应.
主要成果:
- 在移植肺瘤中的CD8+T细胞上,PGRN表达升高.
- 缺少PGRN增强了CD8+T细胞的透,增殖,迁移,激活和对亡的抵抗力.
- PGRN淘汰导致CCL3的产生增加,促进CD8+T细胞介导的抗瘤免疫力.
- PD-L1抑制剂在PGRN-/-小鼠中显示出协同作用,增强了抗瘤反应.
结论:
- PGRN作为一种重要的共抑制分子,抑制CD8+ T细胞抗瘤免疫力.
- 准PGRN是一种新的策略,可以增强CD8+T细胞功能,克服肺癌中的ICB抵抗力.
- 联合向PGRN和PD-L1可能为更有效的癌症免疫疗法提供协同方法.
相关概念视频
Cytotoxic T Cells-mediated Immune Response
901
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...
901
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
T Cell Activation and Clonal Selection
709
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...
709
Tumor Immunotherapy
518
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.
518
Mitogens and the Cell Cycle
6.5K
Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
6.5K
Abnormal Proliferation
4.5K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.5K


