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2019 CICON年会,Kymab公布其诱导型T细胞共刺激物ICOS单抗的积极新发现

2019-09-27 不详 MedSci原创

在2019年第五届CRI-CIMT-EATI-AACR国际癌症免疫治疗会议(CICON)上,Kymab宣布其诱导型T细胞共刺激物(ICOS)单抗KY1044的研究进展,该新型单抗与ICOS结合以消耗肿瘤内调节性T细胞并刺激效应T细胞,从而促进针对肿瘤的免疫反应。

在2019年第五届CRI-CIMT-EATI-AACR国际癌症免疫治疗会议(CICON)上,Kymab宣布其诱导型T细胞共刺激物(ICOS)单抗KY1044的研究进展,该新型单抗与ICOS结合以消耗肿瘤内调节性T细胞并刺激效应T细胞,从而促进针对肿瘤的免疫反应。

CICON海报中提供的数据表明,KY1044 通过抗体依赖性细胞毒性(ADCC)以剂量依赖性方式杀死了ICOS高表达的调节性T细胞,并保留了ICOS低表达的效应T细胞。通过消耗调节性T细胞,KY1044单药治疗以及与抗PD?L1组合可强烈抑制肿瘤生长。KY1044还充当ICOS 低效应T细胞的共刺激激动剂抗体,并在体外和体内诱导效应T细胞增加炎症细胞因子表达。这些数据表明,KY1044可提高效应T细胞与调节性T细胞的比例。

在美国、英国和意大利,一项正在进行的1/2期、开放标签、多中心研究评估了KY1044作为单一药物并与抗PD-L1(atezolizumab)联合治疗在某些晚期恶性肿瘤成年患者中的安全性和有效性(NCT03829501)。

ICOS在T细胞上激活后表达,并在大多数FOXP3+CD4+调节性T细胞上高水平表达。现有数据表明,从肿瘤微环境中清除这些免疫抑制细胞可能会增强患者的抗肿瘤免疫反应。

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    2020-04-06 snf701207
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    2019-09-27 1209e435m98(暂无昵称)

    学习了,谢谢分享

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