一种CCR5抗剂在小鼠模型中增强了肝癌的放射敏感性
Junying Chen1,2, Qiaojing Lin2,3, Ruilong Lan1,2
1Central Laboratory, Key Laboratory of Radiation Biology of Fujian Higher Education Institutions, The First Affiliated Hospital, Fujian Medical University, 20 Chazhong Road, Fuzhou 350005, Fujian, China.
Journal of radiation research
|July 12, 2025
概括
这项研究表明,maraviroc是一种CCR5抗剂,通过抑制免疫抑制性骨髓细胞衍生抑制细胞 (MDSCs) 来增强肝细胞癌 (HCC) 的癌症放射治疗. 这种组合疗法为HCC治疗提供了一种有前途的新方法.
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:
- 肝细胞癌 (HCC) 表现出内在的抗辐射性,限制了传统分离放射治疗 (CFRT) 的疗效.
- 骨髓系衍生抑制细胞 (MDSCs) 在瘤免疫逃避中起着至关重要的作用,并可以促进放射电阻.
研究的目的:
- 为了研究马拉维罗克的放射敏感性潜力,一种化学因受体5 (CCR5) 抗剂,在HCC.
- 阐明马拉维洛克在HCC中的放射敏感作用的机制基础,重点关注其对MDSC的影响.
主要方法:
- 建立了一种小鼠HCC模型 (H22细胞),并用CFRT ± maraviroc.c.治疗.
- 监测了瘤生长,MDSC水平,以及血化基因连接体5 (CCL5).
- 在体外研究中评估了H22细胞活力,增殖,迁移和PMN-MDSC免疫抑制功能.
主要成果:
- 与单独治疗相比,马拉维洛克与CFRT结合显著抑制HCC瘤生长.
- 马拉维罗克没有直接影响HCC细胞的放射敏感性,但逆转了PMN-MDSC介导的免疫抑制.
- 马拉维洛克减弱了PMN-MDSC迁移,抑制了它们与骨髓细胞的分化,并阻止了它们的T细胞抑制.
结论:
- 马拉维罗克通过向PMN-MDSCs作为HCC的放射敏感剂.
- CCR5对抗性和CFRT的组合通过抑制MDSC差异化和功能来增强HCC的辐射敏感性.
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