阿法丁尼布加PEM和CBDCA克服了EGFR突变NSCLC中与高血栓蛋白-1表达的奥西默丁尼布耐药性
Naomi Onda1, Shinji Nakamichi1, Mariko Hirao1
1Department of Pulmonary Medicine and Oncology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan.
Cancer science
|June 28, 2024
概括
在EGFR突变肺癌中可以克服奥西默提尼布的耐药性. 与阿法替尼,卡博普拉丁和佩姆雷克塞德的联合治疗有效地抑制了耐药模型中的瘤入侵和生长.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 奥西默提尼布对EGFR突变非小细胞肺癌 (NSCLC) 有效.
- 获得对奥西默蒂尼布的耐药性是一个重大的临床挑战.
- 了解抵抗机制对于开发新的治疗策略至关重要.
研究的目的:
- 为了研究EGFR突变NSCLC中 osimertinib 耐药性的机制.
- 评估与阿法替尼布联合治疗和化疗在耐奥西默提尼布的模型中的疗效.
主要方法:
- 已经确立的耐奥西默提尼布NSCLC细胞系 (PC-9-OR,H1975-OR).
- 利用cDNA微阵列分析来识别分子变化.
- 进行了细胞入侵和上皮细胞转化为介质细胞转化 (EMT) 的体外试验.
- 在异种移植小鼠模型中评估组合治疗的疗效.
主要成果:
- 抗性细胞中,Thrombospondin-1 (TSP-1) 表达被上调.
- 通过整合蛋白信号传递,TSP-1促进瘤入侵和EMT.
- 组合疗法 (阿法替尼 + 卡博普拉丁 + 佩姆雷克塞德) 抑制了瘤生长并逆转了耐药性标志物.
- 在临床前模型中,阿法替尼,卡博普拉丁和佩米雷克斯联合治疗显示出显著的疗效.
结论:
- 提升TSP-1的调节是对 osimertinib 耐药性的关键机制.
- 阿法替尼布,卡博普拉丁和佩姆雷克塞德的联合治疗是克服奥西默提尼布耐药性的有前途的策略.
- 这种组合疗法可能为EGFR突变NSCLC患有获得性耐药性的患者提供一种新的治疗选择.
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