药理上抑制EIF4A阻断NRF2合成以防止骨肉瘤转移
Michael M Lizardo1, Christopher Hughes1, Yue Z Huang1
1Department of Molecular Oncology, BC Cancer Agency, Part of the Provincial Health Services Authority, Vancouver, British Columbia, Canada.
概括
向真核细胞启动因子4A1 (EIF4A1) 有效地抑制骨髓瘤 (OS) 转移. 这种方法使NRF2抗氧化反应减弱,为转移性OS提供了一个有希望的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症转移 癌症转移
背景情况:
- 转移性骨肉瘤 (OS) 缺乏有效的治疗方法.
- 针对mRNA翻译是OS的一个有前途的战略.
- 选择性翻译支持在恶劣的微环境中细胞保护性蛋白质合成.
研究的目的:
- 评估在OS中的真核转化因子表达.
- 评估EIF4A1抑制剂在OS中的抗转移性活性.
- 为了确定受EIF4A1抑制影响的途径.
主要方法:
- 在OS中评估真核转化因子表达.
- 使用了转移性OS细胞系和患者衍生的异种移植 (PDX) 模型.
- 评估了EIF4A1抑制剂的抗增殖,促细胞缩和抗转移作用.
- 执行蛋白质组学来识别受影响的通路.
主要成果:
- 欧核生物启动因子4A1 (EIF4A1) 在OS中表达高.
- 一种EIF4A1抑制剂CR-1-31B显示纳米细胞毒性并抑制OS转移.
- CR-1-31B阻断了NRF2的上调,模仿了遗传NRF2的不活化.
- 临床级抑制剂佐塔提芬也阻断了NRF2合成和OS转移.
结论:
- 对EIF4A1的药理向有效抑制OS转移.
- 抑制EIF4A1会抑制NRF2的抗氧化反应.
- 抑制EIF4A1代表了转移性OS的可行的治疗策略.
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