Blood:JNJ-64407564,GPRC5DxCD3双特异性抗体,有望成为治疗MM的新选择!

2020-02-12 QQ MedSci原创

中心点:GPRC5D蛋白在浆细胞表面特异性表达。GPRC5DxCD3双特异性抗体可诱导T细胞介导的GPRC5D+细胞杀伤。摘要:T细胞介导的方法在骨髓瘤治疗中显示出良好的前景。但目前可以靶向的特异性骨髓瘤抗原数量有限,MM仍是一种不治之症。G蛋白偶联受体5类成员D (GPRC5D)在多发性骨髓瘤(MM)和闷燃多发性骨髓瘤患者浆细胞中表达。近期,Pillarisett等人发现GPRC5D出现在MM细

中心点:

GPRC5D蛋白在浆细胞表面特异性表达。

GPRC5DxCD3双特异性抗体可诱导T细胞介导的GPRC5D+细胞杀伤。

摘要:

T细胞介导的方法在骨髓瘤治疗中显示出良好的前景。但目前可以靶向的特异性骨髓瘤抗原数量有限,MM仍是一种不治之症。

G蛋白偶联受体5类成员D (GPRC5D)在多发性骨髓瘤(MM)和闷燃多发性骨髓瘤患者浆细胞中表达。

近期,Pillarisett等人发现GPRC5D出现在MM细胞表面,并描述了JNJ-64407564,一种GPRC5DxCD3双特异性抗体,可招募CD3+T细胞聚集到GPRC5D+MM细胞上,诱导杀伤GPRC5D+细胞。

在体外,JNJ-64407564可诱导GPRC5D+细胞的特异性细胞毒性,同时激活T细胞,杀伤MM患者的浆细胞。在GPRC5D+ MM小鼠模型中,JNJ-64407564也可招募T细胞并诱导肿瘤消退,且与肿瘤部位T细胞浸润一致。该抗体还可诱导患者骨髓中原代MM细胞的细胞毒性。

综上所述,GPRC5D是一种有望用于MM免疫治疗的表面抗原,目前评估JNJ-64407564用于复发性或难治性MM患者的一期临床试验中正在进行中。

原始出处:


本文系梅斯医学(MedSci)原创编译,转载需授权!

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    2020-02-15 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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