通过基于工程拉索的强有力的选择性双αvβ6/8抑制剂克服免疫检查点抑制剂的抵抗
Anna Lechner1, Peter A Jordan1, Gabriella Costa Machado da Cruz1
1Lassogen, Inc., 3830 Valley Centre Drive, Suite 705-562, San Diego, California 92130, United States.
Journal of the American Chemical Society
|September 2, 2025
概括
通过瘤微环境中向TGF-β,使用拉索设计的双整蛋白抑制剂可以克服免疫检查点抑制剂的耐药性. 在临床前的模型中,这种方法可以阻止瘤的生长和回归.
科学领域:
- 癌症学
- 免疫学
- 生物技术
背景情况:
- 整体蛋白αvβ6和αvβ8在瘤微环境中激活免疫抑制性TGF-β.
- 这种激活是各种癌症中对免疫检查点抑制剂 (ICI) 耐药性的关键机制.
研究的目的:
- 使用拉索制造强效和选择性的双αvβ6/8整体抑制剂.
- 证明这些抑制剂在克服ICI耐药性的治疗潜力.
主要方法:
- 用皮扫描,计算设计和定向进化来设计双αvβ6/8抑制剂.
- 拉索与白蛋白结合剂结合,以延长其半衰期.
- 确定了抑制剂的NMR结构.
主要成果:
- 工程拉索强烈和选择性抑制αvβ6/8整体.
- 当与ICI结合时,延长半衰期的模拟药物阻止了瘤生长,并在抗mPD-1耐药的卵巢和三阴性乳腺癌模型中逆转瘤.
- 拉索具有类似药物的特性,包括可调的药理动力学和疗效.
结论:
- 双抑制αvβ6/8整体是一种有前途的瘤特异性策略,以克服TGF-β驱动的ICI耐药性.
- 拉索是开发新型癌症治疗的多功能和有效平台.
- 这项工作为基于激光的药物开发提供了未来的进展.
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