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SPRY1+CD8+ T细胞增强ESCC对新辅助PD-1阻断的反应性
2023-10-14 12:32

上海交通大学医学院李志刚、温州医科大学苏建忠、中国医学科学院刘芝华以及中国科学院上海营养与健康研究所龙陵云课题组合作,揭示了祖细胞样耗竭SPRY1+CD8+ T细胞增强了食管鳞状细胞癌(ESCC)对新辅助PD-1阻断的反应性。相关论文于2023年10月12日发表于国际顶尖学术期刊《癌细胞》杂志上。

他们对接受新辅助免疫检查点阻断(ICB)的ESCC患者的肿瘤进行单细胞RNA测序,揭示了表达SPRY1的耗竭CD8+ T细胞亚群(CD8+ Tex-SPRY1),其显示祖耗竭T细胞(Tpex)表型,并与对ICB的完全反应相关。他们通过独立的ICB-/非ICB队列验证了CD8+ Tex-SPRY1细胞作为ICB特异性预测因子改善的反应和生存,并证明了SPRY1在CD8+ T细胞中的表达增强了Tpex表型并增强了ICB疗效。

此外,CD8+ Tex-SPRY1细胞参与巨噬细胞的促炎表型和B细胞的功能状态,从而通过增强CD8+ T细胞效应功能促进抗肿瘤免疫。总的来说,他们的发现揭示了祖细胞样CD8+ Tex-SPRY1细胞在ESCC对ICB有效应答中的作用,并为未来的个体化免疫治疗提供了机制生物标志物。

据了解,新辅助ICB在可手术的ESCC中显示出希望,但缺乏可用的疗效生物标志物。

附:英文原文

Title: Progenitor-like exhausted SPRY1+CD8+ T cells potentiate responsiveness to neoadjuvant PD-1 blockade in esophageal squamous cell carcinoma

Author: Zhichao Liu, Yaru Zhang, Ning Ma, Yang Yang, Yunlong Ma, Feng Wang, Yan Wang, Jinzhi Wei, Hongyan Chen, Alfredo Tartarone, Jeffrey B. Velotta, Farshid Dayyani, Emmanuel Gabriel, Connor J. Wakefield, Biniam Kidane, Cristiano Carbonelli, Lingyun Long, Zhihua Liu, Jianzhong Su, Zhigang Li

Issue&Volume: 2023-10-12

Abstract: Neoadjuvant immune checkpoint blockade (ICB) demonstrates promise in operable esophageal squamous cell carcinoma (ESCC), but lacks available efficacy biomarkers. Here, we perform single-cell RNA-sequencing of tumors from patients with ESCC undergoing neoadjuvant ICB, revealing a subset of exhausted CD8+ T cells expressing SPRY1 (CD8+ Tex-SPRY1) that displays a progenitor exhausted T cell (Tpex) phenotype and correlates with complete response to ICB. We validate CD8+ Tex-SPRY1 cells as an ICB-specific predictor of improved response and survival using independent ICB-/non-ICB cohorts and demonstrate that expression of SPRY1 in CD8+ T cells enforces Tpex phenotype and enhances ICB efficacy. Additionally, CD8+ Tex-SPRY1 cells contribute to proinflammatory phenotype of macrophages and functional state of B cells, which thereby promotes antitumor immunity by enhancing CD8+ T cell effector functions. Overall, our findings unravel progenitor-like CD8+ Tex-SPRY1 cells’ role in effective responses to ICB for ESCC and inform mechanistic biomarkers for future individualized immunotherapy.

DOI: 10.1016/j.ccell.2023.09.011

Source: https://www.cell.com/cancer-cell/fulltext/S1535-6108(23)00327-6

Cancer Cell:《癌细胞》,创刊于2002年。隶属于细胞出版社,最新IF:38.585
官方网址:https://www.cell.com/cancer-cell/home
投稿链接:https://www.editorialmanager.com/cancer-cell/default.aspx


本期文章:《癌细胞》:Online/在线发表

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