CLIN CANCER RES:靶向HPV16/18的免疫治疗在HPV相关头颈部肿瘤中可以诱导免疫反应

2019-01-21 MedSci MedSci原创

约20%的晚期头颈部鳞状细胞癌(HNSCCa)患者对PD-1抗体存在临床反应。病毒新抗原,例如HPV16 / 18的E6 / E7蛋白,是免疫治疗的潜在靶点,可与PD-1抑制免疫激活互补。MEDI0457是一种靶向HPV16 / 18 E6 / E7的DNA免疫疗法。CLIN CANCER RES近期发表了一篇文章,报道了MEDI0457治疗HNSCCa患者的效果。

约20%的晚期头颈部鳞状细胞癌(HNSCCa)患者对PD-1抗体存在临床反应。病毒新抗原,例如HPV16 / 18的E6 / E7蛋白,是免疫治疗的潜在靶点,可与PD-1抑制免疫激活互补。MEDI0457是一种靶向HPV16 / 18 E6 / E7的DNA免疫疗法。CLIN CANCER RES近期发表了一篇文章,报道了MEDI0457治疗HNSCCa患者的效果。

共有22例局部晚期p16 + HNSCCa患者接受了MEDI0457治疗。研究结果表明,MEDI0457与轻度注射部位反应相关,但未发现与治疗相关的3-5级不良事件(AE)。IFNγELISpot表明,21名可评估患者中有18名抗原特异性T细胞活性升高。观察到HPV特异性CD8 + T细胞的诱导。MEDI0457 改变了接受过免疫治疗的肿瘤样本中的CD8 + / FoxP3 +比率并增加了穿孔素+的免疫浸润。一名患者出现肿瘤转移,接受抗PD-1治疗,并具持续的完全反应。流式细胞术分析表明在MEDI0547治疗之前未发现HPV16特异性PD-1 + CD8 + T细胞的诱导。

文章最后认为,MEDI0457可以产生持续的HPV16 / 18抗原特异性外周和肿瘤免疫应答。该方法可用作HPV相关HNSCCa PD-1 / PD-L1抑制治疗的补充,以改善治疗效果。

原始出处:

Charu Aggarwal, Roger B. Cohen, et al. Immunotherapy Targeting HPV16/18 Generates Potent Immune Responses in HPV-Associated Head and Neck Cancer. CLIN CANCER RES. January 2019 doi: 10.1158/1078-0432.CCR-18-1763

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    2019-01-23 wshxjq
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