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双基酸酶4抑制通过促进T细胞透,使放射治疗变得敏感

Yu Tian^1,2, Lingyi Kong^1,2, Yan Li^1,2

¹Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.

|October 18, 2023

概括

放射治疗可以通过抑制二乙酶4 (DPP4) 来改善,以增加瘤中T细胞的透. 这种组合疗法增强了抗瘤效果,并提高了免疫治疗的疗效,就像抗PD-1治疗一样.

科学领域:

在瘤学瘤学.
免疫学免疫学免疫学
辐射疗法辐射疗法

背景情况:

放射治疗的疗效受瘤微环境的免疫状态的影响.
在接受放射治疗的肺腺癌和黑色素瘤患者中,较高的CD8+ T细胞透率与更好的生存率相关.

研究的目的:

调查为什么仅放射治疗无法诱导足够的T细胞透.
确定增强T细胞透和放射治疗疗效的策略.

主要方法:

在 8-Gray 辐射后对化学激素表达的体外研究.
单细胞测序来分析瘤透细胞中的二基酸酶4 (DPP4) 表达.
结合疗法实验涉及放射治疗,DPP4抑制剂和抗PD-1免疫疗法.

主要成果:

放射治疗在体内增加了化学激素转录,但没有增加淋巴细胞透.
树突细胞 (DCs) 显示高DPP4表达,辐射后增加.
将DPP4抑制剂与放射治疗结合起来,促进了化学激素的表达和T细胞的透,增强了抗瘤作用.

结论:

放射治疗的有限的T细胞透部分是由于DCs通过DPP4-介导的化学激素失活.
抑制DPP4是一种可行的策略,可以增强T细胞透和使瘤对放射治疗敏感.
将DPP4抑制与放射治疗和免疫治疗 (抗PD-1) 结合起来,为改善癌症治疗提供了一种有前途的方法.

关键词:

化学因子 (chemokines) 是一种化学物质.DPP4 DPP4 DPP4 DPP4 DPP4 DPP4 DPP4 DPP4 DPP4 DPP4 DPP4 在T细胞,T细胞.免疫疗法免疫疗法辐射疗法辐射疗法

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