干扰素调节因子4的持续表达维持CD8+ T细胞对瘤的免疫力
Anze Yu1,2, Jinfei Fu1, Zheng Yin3,4
1Immunobiology and Transplant Science Center, Department of Surgery, Houston Methodist Research Institute and Institute for Academic Medicine, Houston Methodist Hospital, Houston, TX, USA.
干扰素调节因子4 (IRF4) 对CD8+T细胞抗瘤活性至关重要. 持续的IRF4表达对于在固体瘤中有效的T细胞免疫疗法至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 分子生物学分子生物学
背景情况:
- T细胞免疫疗法在癌症治疗方面表现有前途.
- 了解T细胞转录调节是提高免疫治疗疗效的关键.
- 干扰素调节因子4 (IRF4) 在T细胞抗瘤反应中的作用需要进一步阐明.
研究的目的:
- 为了研究IRF4在抗瘤CD8+T细胞中的功能.
- 确定IRF4对T细胞分化和瘤微环境中的效应器功能的影响.
- 评估在癌症免疫治疗中准IRF4的治疗潜力.
主要方法:
- 为条件基因删除和细胞跟踪生成一个Irf4-GFP-DTR小鼠模型.
- 使用TRAMP-C1前列腺癌和B16F10黑色素瘤模型.
- 采用甲状腺毒素介导的枯竭和采用细胞疗法 (ACT) 策略.
- 分析CD8+瘤透淋巴细胞 (TILs) 的表型和功能.
主要成果:
- 在CD8+TIL中高IRF4.GFP表达与更差异化的PD-1高表型相关.
- 部分耗尽IRF4.GFP+TIL导致瘤生长加速.
- 在CD8+ T细胞中,IRF4的遗传删除或时间除显著降低了ACT的有效性和瘤控制.
- IRF4对于维持CD8+T细胞对瘤的免疫力至关重要.
结论:
- 持续的IRF4表达对CD8+T细胞的抗瘤功能至关重要.
- 在瘤微环境中,IRF4在T细胞分化和效应器反应中起着至关重要的作用.
- 向IRF4可能是开发更强效的固体瘤免疫疗法的有希望的策略.
更多相关视频
07:17Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice
Published on: June 22, 2016
10:13Tailoring In Vivo Cytotoxicity Assays to Study Immunodominance in Tumor-specific CD8+ T Cell Responses
Published on: May 6, 2019
相关概念视频
T Cell Activation and Clonal Selection
Naive T cells that have not yet encountered an antigen express two primary CD...
T Cell Types and Functions
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Cytotoxic T Cells-mediated Immune Response
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...
Tumor Immunotherapy
Immune Response Against Viral Pathogens
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
Cancer Stem Cells and Tumor Maintenance
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
