Bioengineered bacteria-derived outer membrane vesicles as a versatile antigen display platform for tumor vaccination via Plug-and-Display technology.

Bioengineered bacteria-derived outer membrane vesicles as a versatile antigen display platform for tumor vaccination via Plug-and-Display technology.
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生物工程细菌衍生的外膜囊泡作为多功能抗原展示平台,通过即插即用技术进行肿瘤疫苗接种

DOI:
10.1038/s41467-021-22308-8
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发表时间:
2021-04-06
影响因子:
16.6
通讯作者:
Nie G
Nie G
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Cheng K;Zhao R;Li Y;Qi Y;Wang Y;Zhang Y;Qin H;Qin Y;Chen L;Li C;Liang J;Li Y;Xu J;Han X;Anderson GJ;Shi J;Ren L;Zhao X;Nie G

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迫切需要一种能够快速展示新抗原的有效肿瘤疫苗载体。外膜囊泡(OMV)可以强烈激活先天免疫系统,可以作为免疫佐剂。在这里,我们描述了一种基于 OMV 的多功能疫苗平台,通过将抗原特异性呈递到 OMV 表面来引发特定的抗肿瘤免疫反应。我们首先通过与 ClyA 蛋白融合在 OMV 表面展示肿瘤抗原,然后通过采用包含标签/捕手蛋白对的即插即用系统来简化抗原展示过程。装饰有不同蛋白质捕获剂的 OMV 可以同时展示多种不同的肿瘤抗原,从而引发协同抗肿瘤免疫反应。此外,负载不同肿瘤抗原的生物工程OMV可以消除肺黑色素瘤转移并抑制皮下结直肠癌的生长。基于 OMV 的生物工程平台快速、同时展示抗原的能力可能有助于开发这些用于个性化肿瘤疫苗的药物。外膜囊泡 (OMV) 是革兰氏阴性细菌分泌的非复制颗粒,以其免疫刺激和佐剂特性而闻名。在这里,作者通过采用即插即用技术,设计了 OMV 以在表面展示肿瘤抗原,这是一个在临床前癌症模型中促进抗肿瘤免疫反应的平台。
An effective tumor vaccine vector that can rapidly display neoantigens is urgently needed. Outer membrane vesicles (OMVs) can strongly activate the innate immune system and are qualified as immunoadjuvants. Here, we describe a versatile OMV-based vaccine platform to elicit a specific anti-tumor immune response via specifically presenting antigens onto OMV surface. We first display tumor antigens on the OMVs surface by fusing with ClyA protein, and then simplify the antigen display process by employing a Plug-and-Display system comprising the tag/catcher protein pairs. OMVs decorated with different protein catchers can simultaneously display multiple, distinct tumor antigens to elicit a synergistic antitumour immune response. In addition, the bioengineered OMVs loaded with different tumor antigens can abrogate lung melanoma metastasis and inhibit subcutaneous colorectal cancer growth. The ability of the bioengineered OMV-based platform to rapidly and simultaneously display antigens may facilitate the development of these agents for personalized tumour vaccines. Outer membrane vesicles (OMVs), non-replicative particles secreted by Gram-negative bacteria, are known for their immunostimulatory and adjuvant properties. Here, by employing a Plug-and-Display technology, the authors engineer OMVs to display tumor antigens on the surface, a platform that promotes anti-tumor immune responses in preclinical cancer models.
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