使用检查点封锁的癌症免疫疗法
Antoni Ribas1, Jedd D Wolchok2,3
1Department of Medicine, Division of Hematology-Oncology; Department of Surgery, Division of Surgical Oncology; and Department of Molecular and Medical Pharmacology, Jonsson Comprehensive Cancer Center and Parker Institute for Cancer Immunotherapy, University of California, Los Angeles, Los Angeles, CA 90095, USA. aribas@mednet.ucla.edu wolchokj@mskcc.org.
概括
免疫检查点抑制剂如CTLA-4和PD-1疗法提供持久的癌症反应. 然而,可以通过抗原呈现和干扰素-γ通路变化出现获得的耐药性,需要新的组合策略.
科学领域:
- 免疫学和瘤学
- 癌症免疫疗法
背景情况:
- 针对细胞毒性T淋巴细胞相关蛋白4 (CTLA-4) 和编程细胞死亡1 (PD-1) 途径的免疫检查点抑制剂已经彻底改变了癌症治疗.
- 这些疗法释放了先前存在的抗瘤T细胞,导致许多不同癌症患者的持续反应.
研究的目的:
- 审查免疫检查点阻断在癌症治疗中的有效性.
- 探索对这些疗法的耐药性机制.
- 讨论潜在的新组合策略来克服阻力.
主要方法:
- 对免疫检查点抑制剂的现有临床数据和临床前研究的审查.
- 分析潜在的获得性耐药性机制.
- 评估新兴的组合治疗方法.
主要成果:
- 免疫检查点阻塞在大量患者中实现了前所未有的长期瘤反应.
- 大约三分之一的患者最终复发,这表明获得了耐药性的发展.
- 新出现的证据表明,耐药性机制涉及抗原呈现和干扰素γ信号的改变.
结论:
- 虽然有效,免疫检查点抑制剂面临的挑战是获得的抗药性.
- 了解耐药性途径对于改善患者的治疗结果至关重要.
- 下一代组合疗法有望克服这些抵抗机制并增强抗瘤免疫力.
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