将CD38抗体与CD47阻断结合起来是治疗表达CD38的血液性恶性瘤的一个有希望的策略
Song Li1, Dianze Chen1, Yanan Yang1
1Department of R&D, ImmuneOnco Biopharmaceuticals (Shanghai) Inc., Shanghai, China.
Frontiers in immunology
|July 10, 2024
概括
新的CD38/CD47双特异性抗体 (BsAbs) 对血液恶性瘤具有强大的抗瘤活性. 这些BsAbs证明了安全性和有效性,在临床前模型中根除瘤.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 生物技术是生物技术.
背景情况:
- CD38和CD47通常表达在血液恶性瘤中,如多发性骨髓瘤 (MM) 和各种B细胞淋巴瘤和白血病.
- 评估针对CD38和CD47的双特异抗体 (BsAbs) 的治疗潜力对于开发新型癌症治疗非常重要.
研究的目的:
- 开发和评估新型CD38/CD47双特异抗体 (BsAbs) 的抗瘤活性.
- 在血液恶性瘤的临床前模型中研究这些BsAbs的安全性和有效性概况.
主要方法:
- 使用"mAb-trap"平台开发5个CD38/CD47 BsAbs,这些BsAbs来自对抗CD38抗体的杂交瘤查.
- 通过体外测试评估BsAb活性,包括抗体依赖细胞细胞毒性 (ADCC) 和细胞化 (ADCP).
- 使用异种移植模型 (NCI-H929) 进行体内评估,以确定抗瘤疗效和安全性,包括红细胞 (RBC) 结合和凝结.
主要成果:
- CD38/CD47 BsAbs通过ADCC和ADCP表现出强大的瘤细胞杀伤能力,对CD38的亲和力比CD47更高.
- BsAbs显著降低了血液毒性,因为它们不会与红细胞结合或结合.
- 一个BsAb,IMM5605-12C10,在异种移植模型中的所有小鼠中完全根除了已建立的瘤,超过单一疗法.
结论:
- 开发的CD38/CD47 BsAbs在体外和体外表现出强大的抗瘤能力.
- 由于选择性结合和缺乏红细胞相互作用,BsAbs具有有利的安全性.
- CD38/CD47 BsAbs代表了血液恶性瘤的有前途的治疗策略,具有令人满意的耐受性.
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