联合向GPX4和BCR-ABL氨酸激酶可以选择性地破坏BCR-ABL+白血病干细胞
Chengwu Zeng1,2, Dingrui Nie3,4, Xianfeng Wang3
1Guangzhou First People's Hospital, The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 510700, China. chengwuzeng@gzhmu.edu.cn.
Molecular cancer
|October 28, 2024
概括
与氨酸激酶抑制剂 (TKIs) 结合的迪苏尔菲拉姆 (DSF) 通过GPX4降解诱导铁亡,有效向抗BCR-ABL+白血病细胞和白血病干细胞 (LSCs). 这种双重抑制为白血病治疗提供了一个有前途的策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药物发现 药物发现 药物发现
背景情况:
- 氨酸激酶抑制剂 (TKIs) 已推进BCR-ABL+白血病治疗,但面临药物耐药性和持续性白血病干细胞 (LSCs) 的挑战.
- 由于耐药细胞和LSCs,为BCR-ABL+白血病找到治愈方法仍然很困难.
研究的目的:
- 调查迪苏尔菲拉姆 (DSF) 作为与TKIs对抗BCR-ABL+白血病的协同作用剂,重点是克服耐药性和向LSCs.
- 阐明DSF诱导铁和使白血病细胞对TKI敏感的机制.
主要方法:
- 利用细胞模型,小鼠模型和初级患者细胞来评估DSF和TKI的疗效.
- 采用免疫光,共免疫沉,RNA测序,脂质过氧化试验和救援实验来确定作用机制.
- 研究了DSF对GPX4降解和铁灭诱导的作用.
主要成果:
- 迪苏尔菲拉姆 (DSF) 通过诱导铁亡,选择性地抑制BCR-ABL+白血病细胞,包括耐药群体和LSCs,通过诱导铁亡.
- DSF破坏了GPX4的稳定性,增加了不稳定的铁,并增强了脂质过氧化,导致铁细胞死亡.
- 通过通过HSPA8和STUB1促进GPX4降解,DSF克服了耐药性,并与TKI协同消除爆细胞和LSC.
结论:
- 使用DSF和TKIs进行GPX4和BCR-ABL的双抑制,为BCR-ABL+白血病提供了有效的治疗策略.
- 这种方法有效地向白血病爆发细胞和对药物不敏感的LSC,为改善患者的治疗结果提供了一个有希望的途径.
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