肝细胞癌通过欺骗胸腺,使其回忆起外围激活的CD8+ T细胞来逃避免疫监测
Qiaoting Hu1, Xuefeng Wang2, Yundan You3
1Depatment of medical oncology, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital (Fujian Branch of Fudan University Shanghai Cancer Center), Fuzhou, Fujian, PR China; Innovation center for cancer research, Clinical Oncology School of Fujian Medical University, Fujian Cancer Hospital, Fuzhou, Fujian, PR China.
肝细胞癌 (HCC) 劫持了胸腺,以消除对瘤有反应性的CD8+ T细胞. 针对CCL19/CCL21-CCR7轴可以通过增加瘤微环境中的T细胞来恢复抗瘤免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
背景情况:
- 胸膜上皮细胞 (TECs) 通过自我抗原呈现消除自我反应的T细胞.
- TECs在消除瘤反应性CD8+T细胞中的作用尚未完全理解.
研究的目的:
- 研究TEC是否消除肝细胞癌 (HCC) 中的瘤反应性CD8+T细胞.
- 阐明HCC通过哪些机制影响胸腺中的T细胞群.
主要方法:
- 在HCC小鼠模型的胸腺中分析CD8+T细胞亡.
- 在T细胞招募到胸腺时,研究CCL19/CCL21-CCR7轴.
- 通过TECs对抗原捕获和呈现的评估.
- 针对CCL19/CCL21-CCR7轴的治疗策略的评估.
主要成果:
- 周围激活的CD8+ T细胞在HCC小鼠的胸腺中经历了细胞灭绝.
- HCC细胞通过CCL19/CCL21-CCR7轴将外围CD8+T细胞招募到胸腺.
- 在TEC中存在被捕获的HCC抗原,导致瘤反应性CD8+T细胞的激活诱导细胞死亡 (AICD).
- 胸膜切除或药理抑制CCL19/CCL21-CCR7轴可以增强抗瘤免疫力.
结论:
- HCC操纵胸腺以通过消除瘤反应性CD8+T细胞来促进免疫逃避.
- 针对CCL19/CCL21-CCR7轴是一种潜在的治疗策略,可以增强HCC的抗瘤免疫力.
更多相关视频
06:38An Oncogenic Hepatocyte-Induced Orthotopic Mouse Model of Hepatocellular Cancer Arising in the Setting of Hepatic Inflammation and Fibrosis
Published on: September 12, 2019
07:36Tumor Transplantation for Assessing the Dynamics of Tumor-Infiltrating CD8+ T Cells in Mice
Published on: June 12, 2021
相关概念视频
Cell-mediated Immune Responses
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
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...
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...
