向聚胺代谢和铁灭可以提高KRAS向治疗的疗效,这取决于KEAP1状态
Yunyi Bian1,2, Guangyao Shan1, Guoshu Bi1
1Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.
Nature communications
|November 11, 2025
概括
聚氨酸通过通过SAT1促进铁化,使特定的KRAS突变癌症中的KRAS抑制剂变得敏感. 克服KRAS突变/KEAP1突变癌症的耐药性需要SAT1增强才能有效地针对KRAS进行向治疗.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 代谢学 代谢学 代谢学
背景情况:
- 针对KRAS的疗法面临阻力,通常是由于同时发生的突变.
- 了解抵抗机制对于改善癌症治疗结果至关重要.
研究的目的:
- 为了确定对针对KRAS的向疗法的耐药性机制.
- 探索多胺和SAT1在克服这种抵抗中的作用.
主要方法:
- 代谢物库的选. 代谢物库的选.
- 转录基因组测序和代谢基因组分析.
- 在体外和体内癌症模型 (器官,异种移植,小鼠).
主要成果:
- 多氨酸在KRASMU/KEAP1WT细胞中选择性地使KRAS抑制剂敏感,而不是KRASMU/KEAP1MU细胞.
- 聚胺代谢中的关键酶SAT1决定了这种差异反应.
- 在KRASMU/KEAP1WT细胞中的SAT1上调促进铁和药物敏感性.
- 在KRASMU/KEAP1MU细胞中,NRF2降解抑制SAT1,需要SAT1过度表达才能获得治疗效益.
结论:
- 通过SAT1介导的聚胺代谢是对KRAS抑制剂反应的关键决定因素.
- 针对SAT1和聚胺代谢提供了针对KRAS突变癌症的精确策略.
- 多氨酸可以增强KRAS向治疗,SAT1调制是耐药表型的关键.
相关概念视频
02:57Targeted Cancer Therapies
8.6K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
8.6K
02:50Combination Therapies and Personalized Medicine
5.9K
Combining two or more treatment methods increases the life span of cancer patients while reducing damage to vital organs or tissue from the overuse of a single treatment. Combination therapy also targets different cancer-inducing pathways, thus reducing the chances of developing resistance to treatment.
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
5.9K