新的高度强大的c-Met降解剂对抗广泛的癌症
Changkai Jia1,2, Pengli Wei1,3, Shiyang Sun1,2
1National Engineering Research Center for Strategic Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
新的c-Met降解剂D19和G4在MET驱动的癌症中克服了耐药性. 口服D19和G4完全抑制异种移植瘤,并与其他抑制剂产生协同作用.
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:
- c-Met信号通路是各种癌症的关键驱动因素.
- 对c-Met抑制剂的获得性耐药性限制了它们的临床疗效.
- 针对c-Met仍然是癌症治疗的关键策略.
研究的目的:
- 开发新的c-Met降解剂,以克服获得的耐药性.
- 评估新的c-Met降解剂的疗效和药物动力学特性.
- 探索c-Met降解剂在组合疗法中的潜力.
主要方法:
- 对c-Met降解剂进行合理优化 (D19,D26,G4).
- 在MET变异的癌细胞中,细胞生长抑制 (IC50) 和c-Met降解 (DC50) 的评估.
- 用异种移植模型进行的药理动力学研究和体内疗效评估.
- 对具有特定MET突变 (D1228N,Y1230H) 的耐药细胞系进行测试.
- 评估与其他向疗法的协同效应.
主要成果:
- 开发了具有高强度的c-Met降解剂D19,D26和G4 (纳米IC50,皮克莫尔DC50).
- 通过一个依赖于Cullin-CRBN的途径实现了>99%的c-Met降解.
- 在口服后,D19和G4在异种移植中表现出良好的药理动力学和完全的瘤抑制.
- D19和G4有效地抑制了具有MET突变的特波替尼抗性细胞.
- 证明了D19与EGFR/HER2,VEGFR和BRAF抑制剂结合的协同抗瘤作用.
结论:
- D19,D26和G4是强大的c-Met降解剂,对MET驱动的癌症有效.
- D19和G4表现出有希望的药理动力学特征和体内疗效.
- 这些新型降解剂克服了与MET突变相关的抵抗机制.
- D19和G4代表了对MET驱动的恶性瘤有前途的治疗候选者,可能是组合疗法.
更多相关视频
09:38Establishing Dual Resistance to EGFR-TKI and MET-TKI in Lung Adenocarcinoma Cells In Vitro with a 2-step Dose-escalation Procedure
Published on: August 11, 2017
06:51Utilizing 18F-FDG PET/CT Imaging and Quantitative Histology to Measure Dynamic Changes in the Glucose Metabolism in Mouse Models of Lung Cancer
Published on: July 21, 2018
相关概念视频
Targeted Cancer Therapies
There are several types of targeted therapies against...
Mitogens and the Cell Cycle
Metastasis
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Inhibition of Cdk Activity
M-Cdk Drives Transition Into Mitosis
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Treatment Resistant Cancers
