针对PD-1和CTLA-4之外的新型免疫检查点抑制剂VISTA,Curis收购抗VISTA抗体并准备将其商业化

2020-01-08 不详 MedSci原创

美国生物科技公司Curis今天宣布已从ImmuNext 公司获得治疗癌症的抗VISTA单抗CI-8993的全球独家权利。CI-8993是临床阶段的单克隆抗体,旨在拮抗抑制T细胞活化的V域(VISTA)信号通路。

美国生物科技公司Curis今天宣布已从ImmuNext 公司获得治疗癌症的抗VISTA单抗CI-8993的全球独家权利。CI-8993是临床阶段的单克隆抗体,旨在拮抗抑制T细胞活化的V域(VISTA)信号通路。

VISTA是与PD-1 / PD-L1同源并抑制T细胞活化的新型阴性检查点配体。VISTA减轻了造血细胞的负调节作用,削弱了抗肿瘤免疫,并在髓样细胞和T细胞上高表达。临床前,VISTA单克隆抗体治疗可增加周围肿瘤特异性T细胞的数量,并增强肿瘤微环境(TME)中肿瘤反应性T细胞的浸润、增殖和效应。

在临床前模型中,已证明将VISTA单克隆抗体作为一种单一疗法给药可抑制移植性和诱导性黑色素瘤的生长。先前的研究表明,VISTA阻断剂可能与基于肽的癌症疫苗协同作用,从而抑制肿瘤的生长。

在临床上,VISTA在多种肿瘤类型中都强烈表达,包括胰腺癌,间皮瘤和前列腺癌。VISTA产生独立于PD-1和CTLA-4并与之互补的免疫阻断信号。患者样品中的VISTA表达随着对PD-1和CTLA-4靶向治疗代偿性增加。

CI-8993最初是ImmuNext与Janssen Biotech之间的许可和合作协议的一部分。在2016年,Janssen在一项1期研究中启动了CI-8993的临床开发,该研究评估了CI-8993递增剂量对晚期实体瘤患者的安全性、药代动力学和药效学研究。该研究招募了12位患者,其中1位患者经历了与细胞因子释放综合症相关的剂量限制性副作用。Janssen选择结束研究,ImmuNext重新获得了对该资产的控制权。

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    2020-02-20 huirong
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    2020-11-11 jklm09
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    2020-05-02 muzishouyi
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    2020-01-10 hywen7328
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