宜明昂科CD47xHER2双特异性抗体获批临床,适应症为HER2表达的晚期实体瘤

2021-07-04 MedSci原创 MedSci原创

6月30日,宜明昂科宣布,中国国家药监局(NMPA)已批准其

6月30日,宜明昂科宣布,中国国家药监局(NMPA)已批准其CD47xHER2双靶点抗体-受体重组蛋白药物IMM2902开展临床试验,针对的适应症为HER2表达的晚期实体瘤。 新闻稿指出,这是宜明昂科第三款基于CD47靶点的新药项目进入到临床研究阶段。

据介绍,注射用IMM2902项目是宜明昂科研发的新一代双抗类候选药物,针对免疫调节靶点CD47与HER2。该候选药的作用机理为:一方面,通过加速HER2的内吞及降解抑制肿瘤细胞生长;另一方面,通过阻断“别吃我”信号和激活“吃我”信号激发巨噬细胞对肿瘤细胞的吞噬作用,并将吞噬处理的肿瘤抗原递呈给T细胞,从而发挥强大的肿瘤免疫治疗效应。宜明昂科拟开发IMM2902用于治疗HER2阳性的乳腺癌胃癌、肺癌等实体肿瘤。

 非常高兴得知我们的IMM2902项目临床试验申请获得NMPA受理IMM2902项目是基于我们mAb-Trap技术平台开发的针对CD47和Her2的双靶点特异性分子通过Her2的高亲和活性使得药物优先与肿瘤细胞结合同时保留了不与人红细胞结合及避免了Antigenic sink”,等特点大大加强了双靶点肿瘤特异性协同效应我们认为IMM2902将有极大的临床开发价值。”宜明昂科公司创始人田文志博士对IMM2902的临床开发前景充满信心。

宜明昂科的双抗结构属于 mAb-Trap,特点可以总结三个方面。第一,拥有完整的抗体结构, CMC 简单,相当于一个完整抗体的纯化流程;第二,我们的双抗分子是在一个完整抗体的重链或者轻链的一端加一个 Receptor Domain(受体结合域),这样串联在一起不会发生错配;第三,产量高、纯度高、得率高。

宜明昂科创始人田文志曾在美国纽约大学医学院北岸医院分子免疫研究室从事博士后研究工作。随后,在美国抗体公司 ImClone 从事治疗性单克隆抗体药物的研究开发,公司于 2008 年被美国礼来公司收购。2011 年,他曾创办华博生物,并主导申请了三个发明专利。2015 年,田文志成立创新型肿瘤免疫公司宜明昂科,重点布局 CD47 靶向药物开发,主要研究项目包括双特异性抗体、新型重组蛋白、以及 TANKTM 细胞疗法。

另外,宜明昂科还有另外两款基于CD47靶点的新药也已进入临床研究阶段:一款为IMM01,它是新一代针对CD47靶点的免疫检查点抑制剂,可在阻断CD47靶点同时引发强效抗体依赖性细胞吞噬作用(ADCP),通过激活巨噬细胞对肿瘤细胞的吞噬作用,并将吞噬处理的肿瘤抗原递呈给T细胞,从而发挥强大的肿瘤免疫治疗效应;另一款为IMM0306,它是一种靶向CD47和CD20的抗体-受体重组蛋白,能同时作用于肿瘤疾病靶点和调节免疫系统,通过激活巨噬细胞和NK细胞发挥强大抗肿瘤效应。

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    2022-04-03 qidongfanjian
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    2021-07-07 研发小兵

    双特异性抗体是热点,但是也不一定都有效!

    0

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