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Production and Detection of Reactive Oxygen Species (ROS) in Cancers
Published on: November 21, 2011
选择性杀死癌细胞的小分子针对ROS的应激反应
Lakshmi Raj1, Takao Ide, Aditi U Gurkar
1Cutaneous Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Building 149 13th Street, Charlestown, Massachusetts 02129, USA.
Nature
|July 15, 2011
概括
皮珀龙胺通过向恶性转化过程中获得的非基因依赖性来选择性地杀死癌细胞. 这种小分子通过增加活性氧物种 (ROS) 诱导癌细胞死亡,显示出癌症治疗的前景.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药理学 药理学 是一个学科.
背景情况:
- 由于瘤基因激活和瘤抑制基因失活,癌细胞表现出放松和增强的压力 (氧化,复制,代谢,蛋白质毒性,DNA损伤).
- 癌细胞发展对非瘤基因的生存依赖,呈现出潜在的治疗点.
- 准这些非基因依赖性可以导致合成致死性和选择性癌症细胞死亡.
研究的目的:
- 通过利用非基因依赖性来选择性杀死癌细胞的小分子.
- 研究已识别的化合物的作用机制和治疗潜力.
主要方法:
- 基于细胞的小分子查.
- 定量蛋白质组学. 定量蛋白质组学.
- 在体外测试评估细胞活力和细胞亡.
- 使用老鼠异种移植和自发瘤模型的体内研究.
主要成果:
- 皮珀龙胺被确定为一种选择性杀死癌细胞的小分子.
- 皮珀龙胺增加活性氧物种 (ROS) 并诱导癌细胞和癌症基因型正常细胞的细胞死亡,无论p53状态如何.
- 在老鼠异种移植模型中,Piperlongumine表现出显著的抗瘤作用,对正常小鼠没有明显的毒性.
- 在小鼠中,Piperlongumine抑制了自发性恶性乳腺瘤和转移的生长.
结论:
- 皮珀龙胺通过向获得的非基因共同依赖,选择性地诱导癌细胞的亡.
- 这种机制利用癌细胞的压力表型,提供了一种新的治疗策略.
- Piperlongumine 显示出作为选择性抗癌剂的显著潜力,在临床前模型中已证明有效性.
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