嵌合抗原受体
癌症研究
肿瘤微环境
免疫抑制
免疫系统
T细胞
医学
免疫学
作者
Lipeng Zhu,Jie Liu,Guangyu Zhou,Tzu‐Ming Liu,Yunlu Dai,Guangjun Nie,Qi Zhao
出处
期刊:Small
[Wiley]
日期:2021-08-10
卷期号:17 (43)
被引量:50
标识
DOI:10.1002/smll.202102624
摘要
Targeting B7-H3 chimeric antigen receptor (CAR) T cells has antitumor potential for therapy of non-small cell lung cancer (NSCLC) in preclinical studies. However, CAR T cell therapy remains a formidable challenge for the treatment of solid tumors due to the heterogeneous and immunosuppressive tumor microenvironment (TME). Nanozymes exhibit merits modulating the immunosuppression of the tumor milieu. Here, a synergetic strategy by combination of nanozymes and CAR T cells in solid tumors is described. This nanozyme with dual photothermal-nanocatalytic properties is endowed to remodel TME by destroying its compact structure. It is found that the B7-H3 CAR T cells infused in mice engrafted with the NSCLC cells have superior antitumor activity after nanozyme ablation of the tumor. Importantly, it is found that the changes altered immune-hostile cancer environment, resulting in enhanced activation and infiltration of B7-H3 CAR T cells. The first evidence that the process of combination nanozyme therapy effectively improves the therapeutic index of CAR T cells is presented. Thus, this study clearly supports that the TME-immunomodulated nanozyme is a promising tool to improve the therapeutic obstacles of CAR T cells against solid tumors.
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