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Bioengineering Bacterial Vesicle-Coated Polymeric Nanomedicine for Enhanced Cancer Immunotherapy and Metastasis Prevention.
Nano Letters ( IF 9.6 ) Pub Date : 2019-12-20 , DOI: 10.1021/acs.nanolett.9b02182
Qi Chen 1 , Hongzhen Bai 1 , Wangteng Wu 1 , Guojun Huang 1 , Yang Li 1 , Min Wu 1 , Guping Tang 1 , Yuan Ping 2
Affiliation  

We herein propose a bioengineering approach where bacterial outer membrane vesicles (OMVs) were coated on drug-loaded polymeric micelles to generate an innovative nanomedicine for effective cancer immunotherapy and metastasis prevention. Whereas OMVs could activate the host immune response for cancer immunotherapy, the loaded drug within polymeric micelles would exert both chemotherapeutic and immunomodulatory roles to sensitize cancer cells to cytotoxic T lymphocytes (CTLs) and to kill cancer cells directly. We demonstrated that the systemic injection of such a bioinspired immunotherapeutic agent would not only provide effective protective immunity against melanoma occurrence but also significantly inhibited tumor growth in vivo and extended the survival rate of melanoma mice. Importantly, the nanomedicine could also effectively inhibit tumor metastasis to the lung. The bioinspired immunomodulatory nanomedicine we have developed repurposes the bacterial-based formulation for cancer immunotherapy, which also defines a useful bioengineering strategy to the improve current cancer immunotherapeutic agents and delivery systems.

中文翻译:

生物工程细菌囊泡涂层聚合物纳米药物,用于增强的癌症免疫治疗和转移预防。

我们在此提出一种生物工程方法,其中将细菌外膜囊泡(OMV)涂覆在载药的聚合物微团上,以产生用于有效癌症免疫治疗和转移预防的创新纳米药物。尽管OMV可以激活用于癌症免疫疗法的宿主免疫反应,但是聚合物胶束中的负载药物将同时发挥化学治疗和免疫调节作用,以使癌细胞对细胞毒性T淋巴细胞(CTL)敏感并直接杀死癌细胞。我们证明了全身注射这种受生物启发的免疫治疗剂不仅可以提供针对黑色素瘤发生的有效保护性免疫力,而且可以显着抑制体内肿瘤的生长并延长黑色素瘤小鼠的存活率。重要的,纳米药物还可以有效抑制肿瘤向肺转移。我们开发的具有生物启发性的免疫调节纳米药物将基于细菌的制剂重新用于癌症免疫治疗,这也定义了一种有用的生物工程策略,以改善当前的癌症免疫治疗剂和递送系统。
更新日期:2019-12-20
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