卡路里限制和甲福明选择性地改善了LKB1突变NSCLC瘤对化疗和化疗免疫疗法的反应
Gloriana Ndembe1, Ilenia Intini1, Massimo Moro2
1Laboratory of Molecular Pharmacology, Department of Experimental Oncology, Istituto Di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy.
Journal of experimental & clinical cancer research : CR
|January 2, 2024
概括
甲胺和热量限制 (CR) 增强了KRASmut/LKB1mut非小细胞肺癌 (NSCLC) 的化疗和化疗免疫疗法. 这些干预措施利用了LKB1受损瘤的代谢脆弱性,改善了治疗结果.
科学领域:
- 在瘤学瘤学.
- 癌症中的代谢途径
- 瘤微环境调制
背景情况:
- 具有KRAS和LKB1突变 (KRASmut/LKB1mut) 的非小细胞肺癌 (NSCLC) 由于转移和治疗耐药性增加,预后不佳.
- 失去LKB1蛋白质会破坏细胞代谢,导致线粒体功能障碍和对代谢压力的反应受损.
- 目前的疗法在KRASmut/LKB1mutNSCLC中表现出有限的疗效,这凸显了对新型治疗策略的需求.
研究的目的:
- 调查甲福明和热量限制 (CR) 是否可以在LKB1受损NSCLC模型中提高化疗或化疗免疫疗法的疗效.
- 探索向癌症新陈代谢的潜力,以克服KRASmut/LKB1mut瘤中的治疗阻力.
- 评估甲胺和CR对瘤微环境 (TME) 和免疫细胞透的影响.
主要方法:
- 从具有功能性或突变LKB1 (KRASG12D/LKB1wt和KRASG12D/LKB1mut) 的转基因小鼠中建立小鼠细胞系.
- 在免疫能力较强的小鼠中注射细胞系,并在免疫功能较弱的小鼠中建立患者衍生异种移植 (PDX) 模型.
- 治疗方案包括化疗或化疗免疫疗法,单独或与甲福明和CR结合使用.
主要成果:
- 在KRASmut/LKB1mutNSCLC模型中,甲胺和CR显著增强了对化疗和化疗免疫疗法的反应.
- 联合治疗诱导了代谢应激,而LKB1受损瘤无法克服.
- 在TME免疫调节和瘤对甲胺和CR的反应之间没有强烈的相关性.
结论:
- 添加甲胺和CR可以改善LKB1受损NSCLC的化疗和化疗免疫治疗的抗瘤活性.
- 这些发现支持将向癌细胞代谢作为一种可行的策略,以提高特定NSCLC亚型的治疗疗效.
- 利用KRASmut/LKB1mut瘤的代谢漏洞提供了一个有希望的治疗途径.
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