一种针对pCAD和CDH17的双特异抗体-药物结合体具有抗瘤活性,并改善了瘤特异性
Alyssa Synan1, Nila C Wu1, Roberto Velazquez1
1Department of Oncology, Novartis Biomedical Research, Cambridge, MA, USA.
mAbs
|January 6, 2025
概括
这项研究开发了一种双特异抗体-药物合物 (ADC),针对结直肠癌中的P-cadherin (pCAD) 和LI-cadherin (CDH17) 两种药物. 这种新型双特异性ADC在表达两种抗原的临床前模型中显示出显著的抗瘤活性.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 生物技术是生物技术.
背景情况:
- P-cadherin (pCAD) 和LI-cadherin (CDH17) 是细胞表面蛋白质,在结直肠癌中表达高.
- 它们的共同表达是双重向策略的治疗目标.
- 抗体-药物合物 (ADCs) 为向癌症治疗提供了一种有前途的方法.
研究的目的:
- 开发和评估一种针对pCAD和CDH17的双特异抗体-药物联合体 (ADC).
- 在临床前结直肠癌模型中研究双向ADC的疗效.
- 为了展示一种用于双特异性抗体发现的新型贪驱动的查方法.
主要方法:
- 使用一种以贪驱动的体外查来产生pCAD x CDH17双特异性抗体.
- 选择了一种双特异性抗体,并将其与单甲基奥里斯塔丁E (MMAE) 结合,以创建一个双特异性ADC.
- 在体内使用双侧翼小鼠模型评估双特定ADC的抗瘤活性.
主要成果:
- 双特异性抗体选择性地向表达pCAD和CDH17的细胞,而不是仅表达一种抗原的细胞.
- 这种pCAD x CDH17双特异的MMAE ADC在瘤中显示出显著的抗瘤活性,同时表达两种抗原.
- 在仅表达pCAD或仅表达CDH17的瘤中没有观察到抗瘤活性.
结论:
- 临床前数据支持对双特异性抗体发现方法的概念证明.
- 通过优先考虑交叉臂狂热的IgG来选抗体的合理设计可以有效地准双阳性癌细胞.
- 这种双特异的ADC策略有可能用于治疗具有特定cadherin共同表达特征的结直肠癌.
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