CLIN CANCER RES:靶向肿瘤脉管系统增强免疫检查点抑制剂联合过继细胞治疗疗效

2018-05-16 MedSci MedSci原创

异常的血流及内皮细胞无反应性在许多实体肿瘤中存在,阻滞了细胞毒T淋巴细胞肿瘤(CTL)浸润。这也导致了使用抗体单药(如免疫检查点抑制剂)直接靶向T细胞调节通路的免疫治疗耐药。CLIN CANCER RES近期发表了一篇文章,研究NGR-TNF,一种靶向肿瘤血管的TNF衍生物,是否可以增加CTL瘤内浸润以及是否可以使肿瘤对PD-1和CTLA-4受体抗体敏感。

异常的血流及内皮细胞无反应性在许多实体肿瘤中存在,阻滞了细胞毒T淋巴细胞肿瘤(CTL)浸润。这也导致了使用抗体单药(如免疫检查点抑制剂)直接靶向T细胞调节通路的免疫治疗耐药。CLIN CANCER RES近期发表了一篇文章,研究NGR-TNF,一种靶向肿瘤血管的TNF衍生物,是否可以增加CTL瘤内浸润以及是否可以使肿瘤对PD-1和CTLA-4受体抗体敏感。

作者使用前列腺癌和B16黑色素瘤鼠模型进行研究。模型接受NGR-TNF,过继细胞治疗(ACT)和免疫检查点抑制剂(ICB)治疗,检测免疫反应及疾病进展情况。研究结果表明,国际细胞治疗,NGR-TNF联合免疫检查点抑制剂联合治疗抑制疾病进展以及改善免疫检查点抑制剂耐药鼠模型生存的效果最为显着。这一治疗效果与有效的肿瘤浸润有关,尤其是内源性浸润,但是也与输入的PD-1+,颗粒酶B+和干扰素γ+ CTL有关。该治疗效果也与T效应细胞/Treg细胞比值有关。

文章最后认为,使用TNF靶向肿瘤血管联合国际细胞治疗是增强肿瘤T细胞浸润的有效策略且可以克服免疫检查点抑制剂耐药。

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    2019-04-22 jklm09
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    2018-05-16 内科新手

    谢谢梅斯提供这么好的信息,学到很多

    0

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