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A cell membrane vehicle co-delivering sorafenib and doxorubicin remodel the tumor microenvironment and enhance immunotherapy by inducing immunogenic cell death in lung cancer cells.
Journal of Materials Chemistry B ( IF 6.1 ) Pub Date : 2020-07-18 , DOI: 10.1039/d0tb01052a
Jun Wan 1 , Jian Wang , Min Zhou , Zhanpeng Rao , Xiean Ling
Affiliation  

Cancer immunotherapy is a promising approach for cancer therapy but is usually hindered by the inhibition of the tumor microenvironment (TME). Herein, we developed a cell membrane vehicle (CV) to co-deliver doxorubicin (Dox) and sorafenib (Sfn) as a drug delivery system (CV/D–S) to regulate the TME and sensitize the immunogenic cell death (ICD)-induced immune response against tumors. The CV/D–S showed high stability, acid-responsive drug release, high biocompatibility with tumor-specific cellular uptake, and target-ability that preferably resulted in the in vitro and in vivo anticancer performance. Most importantly, the Dox in the DDS can induce significant ICD while Sfn was able to remodel the TME, downregulate Treg, activate effector T cells and relieve programmed cell death protein 1 (PD-1) expression. As a result, the synergistic effect of Dox and Sfn achieved strong immune response in CV/D–S treated mice, which is believed to open a new window for the design and development of future platforms for the more effective immunotherapy of cancer.

中文翻译:

共递送索拉非尼和阿霉素的细胞膜载体通过诱导肺癌细胞的免疫原性细胞死亡来重塑肿瘤微环境并增强免疫疗法。

癌症免疫疗法是一种有前途的癌症治疗方法,但通常由于抑制肿瘤微环境(TME)而受到阻碍。在此,我们开发了一种细胞膜媒介物(CV)以共同递送阿霉素(Dox)和索拉非尼(Sfn)作为药物递送系统(CV / D–S)来调节TME并敏化免疫原性细胞死亡(ICD)-诱导针对肿瘤的免疫反应。CV / D–S显示出高稳定性,酸响应性药物释放,具有肿瘤特异性细胞摄取的高生物相容性和靶向能力,优选在体外体内产生抗癌性能。最重要的是,DDS中的Dox可以诱导显着的ICD,而Sfn能够重塑TME,下调Treg,激活效应T细胞并减轻程序性细胞死亡蛋白1(PD-1)的表达。结果,Dox和Sfn的协同作用在CV / D–S处理的小鼠中获得了强大的免疫反应,这被认为为设计和开发更有效的癌症免疫疗法的未来平台打开了新的窗口。
更新日期:2020-09-02
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