一种四价双特异性抗体选择性地抑制了各种FGFR3瘤变体
Yan Yang1, Avvaru N Suhasini1, Zaoli Jiang1
1Regeneron Pharmaceuticals, Inc., Tarrytown, New York.
Cancer research
|July 31, 2024
概括
一种新型双特异性抗体有效地向膀癌中突变的FGFR3,克服对当前疗法的耐药性. 这种抗体显示出治疗由FGFR3突变和融合驱动的瘤的前景.
科学领域:
- 在瘤学瘤学.
- 免疫治疗是一种免疫疗法.
- 分子生物学分子生物学
背景情况:
- FGFR3突变驱动膀癌,是治疗的目标.
- 现有的泛FGFR氨酸激酶抑制剂 (TKI) 面临毒性和耐药性问题.
- 传统的抗体难以抑制构成性活跃的FGFR3变体.
研究的目的:
- 开发一种用于向致癌FGFR3变异的新型抗体治疗方法.
- 克服当前针对FGFR3的治疗方法的局限性,如TKI和常规抗体.
主要方法:
- 开发一个四价值的FGFR3×FGFR3双特异抗体.
- 评估抗体对FGFR3点突变和融合蛋白的疗效.
- 对抗体阻断FGFR3二分化和抑制耐药变异的能力的评估.
主要成果:
- 与传统抗体相比,双特异性抗体对FGFR3突变和融合的抑制能力更强.
- 它有效地阻止了常见的FGFR3 S249C变体的二分化.
- 在模型中,抗体抑制了FGFR3驱动的瘤生长,其疗效与erdafitinib相当.
结论:
- 针对FGFR3的双特异性抗体提供了一种强大而有选择性的治疗策略.
- 这种方法解决了癌症中各种致癌性FGFR3变异所带来的挑战.
- 开发的抗体显示出广泛抑制FGFR3驱动瘤的潜力.
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