CLIN CANCER RES:接受新辅助化疗联合Ipilimumab治疗的早期非小细胞肺癌患者免疫激活

2017-12-17 MedSci MedSci原创

CLIN CANCER RES近期发表了一篇文章,研究新辅助化疗联合Ipilimumab在早期非小细胞肺癌患者中的免疫学效应。

CLIN CANCER RES近期发表了一篇文章,研究新辅助化疗联合Ipilimumab在早期非小细胞肺癌患者中的免疫学效应。

该研究为单臂化疗联合Ipilimumab的Ⅱ期试验,共纳入24例未接受过治疗的ⅠB-ⅢA期非小细胞肺癌患者。患者接受3个周期紫杉醇加顺铂或卡铂化疗,最后两个周期加入Ipilimumab治疗。研究结果表明,单纯化疗对PBMC的免疫特性几乎没有影响。后续加入Ipilimumab后观察到CD4和CD8细胞CD28依赖活化增强。表达活化标志ICOS,HLA-DR,CTLA-4和PD-1的CD4+细胞显着增加。同样的,表达相同活化标志(除了PD-1)的CD8+细胞增加。作者还检测了7例切除肿瘤标本,发现活化肿瘤浸润淋巴细胞比例更高。更令人意外的是,作者在4例患者基线PBMC中发现存活素,PRAME或MAGE-A3的肿瘤相关抗原反应,但是后续Ipilimumab治疗中既未发现频率增加也未出现新的可检测到的反应。Ipilimumab对循环Treg细胞和MDSC基本没有影响。

文章最后认为,该研究并未达到检测Ipilimumab治疗后血液中肿瘤相关抗原T细胞反应增加的主要研究终点。所有的研究结果综合表明早期非小细胞肺癌中Ipilimumab具有免疫激活特性。Ipilimumab获得的免疫特性数据为免疫检查点抑制联合治疗提供了证据。

原始出处:
John S.Yi,Neal Ready,et al.Immune Activation in Early-Stage Non-Small Cell Lung Cancer Patients Receiving Neoadjuvant Chemotherapy Plus Ipilimumab.CLIN CANCER RES.December 2017 doi:10.1158/1078-0432.CCR-17-2005

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    2018-07-10 snf701207
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