人類膀胱癌的瘤內CD4+T細胞介導抗腫瘤細胞毒性作用
作者:
小柯機器人發布時間:2020/6/5 10:07:56
美國加州大學聖地牙哥分校Lawrence Fong、Chun Jimmie Ye等研究人員合作發現,人類膀胱癌的瘤內CD4+T細胞介導抗腫瘤細胞毒性作用。相關論文於2020年6月3日在線發表在《細胞》雜誌上。
通過使用單細胞RNA和配對T細胞受體(TCR)測序對來自7位患者的30604個T細胞進行檢測,研究人員評估了來自人膀胱腫瘤和非惡性組織的T細胞。研究人員發現,與非惡性組織相比,CD8+T細胞的狀態和組成在腫瘤中並不明顯。相反,CD4+T細胞的單細胞分析顯示了幾種腫瘤特異性狀態,包括調節性T細胞的多個不同狀態。
令人驚訝地,研究人員還發現了克隆擴增的多種細胞毒性CD4+T細胞狀態。這些CD4+T細胞能夠以MHC II依賴性方式殺死自體腫瘤,並被調節性T細胞抑制。此外,腫瘤中細胞毒性CD4+T細胞的基因特徵能夠預測244位接受抗PD-L1治療的轉移性膀胱癌患者的臨床反應。
據了解,抗PD-1免疫療法很少在膀胱癌中產生效果。介導腫瘤排斥的特異性T細胞尚不清楚。
附:英文原文
Title: Intratumoral CD4+ T Cells Mediate Anti-tumor Cytotoxicity in Human Bladder Cancer
Author: David Y. Oh, Serena S. Kwek, Siddharth S. Raju, Tony Li, Elizabeth McCarthy, Eric Chow, Dvir Aran, Arielle Ilano, Chien-Chun Steven Pai, Chiara Rancan, Kathryn Allaire, Arun Burra, Yang Sun, Matthew H. Spitzer, Serghei Mangul, Sima Porten, Maxwell V. Meng, Terence W. Friedlander, Chun Jimmie Ye, Lawrence Fong
Issue&Volume: 2020-06-03
Abstract: Responses to anti-PD-1 immunotherapy occur but are infrequent in bladder cancer. The specific T cells that mediate tumor rejection are unknown. T cells from human bladder tumors and non-malignant tissue were assessed with single-cell RNA and paired T cell receptor (TCR) sequencing of 30,604 T cells from 7 patients. We find that the states and repertoires of CD8+ T cells are not distinct in tumors compared with non-malignant tissues. In contrast, single-cell analysis of CD4+ T cells demonstrates several tumor-specific states, including multiple distinct states of regulatory T cells. Surprisingly, we also find multiple cytotoxic CD4+ T cell states that are clonally expanded. These CD4+ T cells can kill autologous tumors in an MHC class II-dependent fashion and are suppressed by regulatory T cells. Further, a gene signature of cytotoxic CD4+ T cells in tumors predicts a clinical response in 244 metastatic bladder cancer patients treated with anti-PD-L1.
DOI: 10.1016/j.cell.2020.05.017
Source: https://www.cell.com/cell/fulltext/S0092-8674(20)30612-7
Cell:《細胞》,創刊於1974年。隸屬於細胞出版社,最新IF:36.216