通过Akt和eIF4E在瘤发生和癌症治疗中的生存信号
Hans-Guido Wendel1, Elisa De Stanchina, Jordan S Fridman
1Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA.
Nature
|March 19, 2004
概括
癌细胞逃避了亡,这是瘤发育和耐药性的关键过程. 用拉巴胺素准Akt信号,可以逆转某些淋巴瘤的化疗耐药性,提供新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 逃避亡是癌症的标志,有助于瘤形成和耐药性.
- Akt是一种亡调节剂,在许多癌症中被激活,并与药物耐药性有关,但其确切的作用尚不清楚.
研究的目的:
- 在小鼠淋巴瘤模型中调查Akt在亡逃避,瘤发生和药物耐药性中的作用.
- 确定是否针对Akt信号可以恢复耐药淋巴瘤的化学敏感性.
主要方法:
- 利用一种小鼠淋巴瘤模型来研究Akt信号.
- 用了mTOR抑制剂拉巴胺素来评估其对化学抵抗的影响.
- 调查了eIF4E作为Akt的下游影响者的作用.
主要成果:
- 阿克特激活促进瘤发生和药物耐药性,通过破坏亡.
- 拉巴胺在具有Akt缺陷的淋巴瘤中逆转化疗抵抗,但在具有其他亡突变的淋巴瘤中没有逆转化疗抵抗.
- eIF4E回顾了Akt的效果,但没有对拉巴胺或化疗产生敏感性.
结论:
- 通过mTOR和eIF4E传递阿克特信号是体内瘤发生和药物耐药性的关键机制.
- 向亡途径可以以基因型依赖的方式恢复药物敏感性,突出个性化治疗方法.
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