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对JS207的特性和功能评估,这是一种针对人类PD-1和VEGFA的新型双特异抗体

Shihua Lin¹, Min Hong², Jing Zhang²

¹The R&D Department of Topalliance Biosciences, Inc., Rockville, MD, United States.

Frontiers in immunology

|July 3, 2025

概括

一种新的双特异性抗体 (BsAb),JS207,同时向PD-1和VEGF通路,用于增强癌症免疫治疗. 这种BsAb显示出显著的抗瘤疗效和改善的稳定性,提供了一个有前途的治疗候选者.

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:

癌症免疫疗法利用PD-1抑制剂和VEGF抑制剂来增强抗瘤反应.
结合PD-1和VEGF抑制具有前景,但面临复杂的剂量和毒性等挑战.
双特异性抗体 (BsAb) 可以通过同时针对瘤微环境中的两个途径来克服这些局限性.

研究的目的:

描述和评估JS207,一种针对PD-1和VEGFA的新型双特异抗体.
评估JS207在癌症模型中的体外和临床前疗效.
研究JS207.7的作用机制和稳定性.

主要方法:

在体外鉴定JS207的结合亲和力,T细胞激活和VEGF信号抑制.
在MC38结肠癌和A375黑色素瘤小鼠模型中对JS207的抗瘤疗效的临床前评估.
评估JS207的作用机制,包括VEGFA在抗原结合和T细胞激活中的作用.
对JS207的热稳定性进行评估,以考虑制造和储存.

主要成果:

JS207表现出高抗原结合亲和力,在T细胞激活和VEGF抑制方面与基准抗体匹配或超越.
在结肠和黑色素瘤小鼠模型中观察到显著的抗瘤疗效.
发现VEGFA可以增强JS207的结合,T细胞激活和PD-1的内部化.
JS207表现出显著的抗瘤疗效,耐受性良好,并显示出增强的热稳定性.

结论:

JS207是一种强大的双特异性抗体,向PD-1和VEGFA.
JS207显示出显著的抗瘤功效和有利的稳定性特征.
在癌症免疫治疗中,JS207代表了一个有前途的治疗候选人,以解决未满足的癌症免疫治疗需求.

关键词:

在JS207中,我们将使用JS207.在PD-1/PD-L1中.两种特异性抗体的抗体在内部化,内化.热稳定性的热稳定性瘤微环境 (TME) 是指瘤的微环境.血管内皮生长因子A (VEGFA)

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