一种免疫刺激的CELMOD组合克服了由多发性骨髓瘤高负担引起的T细胞抗药性
Erin W Meermeier1, Kirsten Pfeffer1, Caleb K Stein1
1Mayo Clinic, Scottsdale, Arizona, United States.
Blood
|August 27, 2025
概括
结合双特异性T细胞诱导剂 (TCE) 与Ikaros降解剂和德克萨米,可以克服多发性骨髓瘤 (MM) 的耐药性. 在高瘤负担设置中,这种策略改善了T细胞反应和存活率,降低了细胞因子释放综合征 (CRS) 的风险.
科学领域:
- 癌症学
- 免疫疗法
- 血液学
背景情况:
- 针对BCMA和CD3的双特异性T细胞诱导剂在多发性骨髓瘤 (MM) 中表现出有效性,但在高瘤负担的环境中发生耐药性.
- 伊卡洛斯降解剂 (IMiDs,CELMoDs) 具有直接的抗MM作用和免疫刺激,具有与TCE的潜在组合策略.
研究的目的:
- 优化涉及TCE,Ikaros降解剂和其他药物的组合策略,以克服MM中对TCE的初级抵抗.
- 研究提高高瘤负担MM的应答率和存活率的方法,同时管理细胞因子释放综合征 (CRS) 等安全问题.
主要方法:
- 使用IMID敏感的Vk*MYChCRBN小鼠模型来测试组合疗法.
- 评估了TCE的抗PD1和利多米德的添加,随后是Iberdomide和德克萨米的预治疗,随后是TCE的逐步剂量.
主要成果:
- 在高瘤负担的MM中,添加抗PD1和利多米德降低了T细胞疲劳和改善了反应率,但增加了致命CRS的风险.
- 在TCE前用伊伯多米德和德克萨米松进行预治疗,结果是100%的应答率,延长存活时间和有利的T细胞形状,限制了T细胞的调节扩张和耗尽.
- 这种优化疗法 (用德克萨梅他松和伊伯多米德,然后用TCE) 显示出更深入,更持久的反应,降低了CRS的风险.
结论:
- 在高瘤负担的MM中,用德克萨米松和伊伯多米德进行预治疗是克服TCE耐药性的有希望的策略.
- 这种组合方法增强了T细胞的激活,促进了原始T细胞的透,提高了整体存活率,同时降低了CRS风险.
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