一个MET向的可变新抗原受体 (VNAR) 治疗非小细胞肺癌的疗效
bioRxiv : the preprint server for biology
|February 12, 2026
概括
一种来自鱼的新型抗体 (VNAR) 选择性地准MET受体,用于非小细胞肺癌 (NSCLC) 的潜在治疗应用. 这种药物显示出对成像和治疗MET-改变NSCLC的前景.
科学领域:
- 生物化学 生物化学
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
背景情况:
- 在非小细胞肺癌 (NSCLC) 中,MET受体氨酸激酶的改变发生在约6%的患者中.
- 在NSCLC中也观察到MET过度表达,强调其在癌症进展中的作用.
研究的目的:
- 开发一种来自鱼的新型单域可变新抗原受体 (VNAR),用于针对MET受体的治疗应用.
- 评估基于VNAR的药物的疗效,用于MET改变NSCLC的成像和治疗干预.
主要方法:
- 用人类MET细胞外域对护士进行免疫,以产生VNAR克隆.
- 对于MET选择性和亲和性的VNAR的表征.
- 开发一种双价人体Fc融合 (vMET1-Fc) 以提高细胞吸收.
- 用PET/CT成像使用-89 ([89 Zr]Zr-vMET1-Fc) 进行放射性标记.
- 用-177 ([177 Lu]Lu-vMET1-Fc) 进行放射性标记,用于治疗评估.
- 在非人类灵长类动物研究中评估生物分布和安全性.
主要成果:
- 确定了一种具有高MET选择性的VNAR克隆.
- vMET1-Fc在表达MET的细胞系和异种移植中表现出选择性内化.
- [Zr]Zr-vMET1-Fc启用了PET/CT检测MET阳性NSCLC异种移植的方法.
- [177 Lu]Lu-vMET1-Fc延迟了MET突变和MET放大异种移植的瘤生长.
- 非人类灵长类动物的研究显示了有利的生物分布,可预测的清除和最小的目标外吸收.
结论:
- vMET1-Fc是用于成像和治疗MET变异NSCLC的有前途的治疗药物.
- 来自鱼的VNAR代表了开发向癌症治疗和诊断的可行平台.
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