Institute for Translational Vaccinology (Intravacc), Process Development Bacterial Vaccines, P.O. Box 450, 3720 AL Bilthoven, the Netherlands; Wageningen University, Bioprocess Engineering, P.O. Box 16, 6700 AA Wageningen, the Netherlands.
Institute for Translational Vaccinology (Intravacc), Exploratory & Clinical Research, P.O. Box 450, 3720 AL Bilthoven, the Netherlands.
Vaccine. 2019 Nov 8;37(47):6978-6986. doi: 10.1016/j.vaccine.2019.01.076. Epub 2019 Aug 2.
Outer membrane vesicles (OMVs) are nanoparticles produced by Gram-negative bacteria that can be used as vaccines. The application of OMVs as vaccine component can be expanded by expressing heterologous antigens on OMVs, creating an OMV-based antigen presenting platform. This study aims to develop a production process for such OMV-based vaccines and studies a production method based on meningococcal OMVs that express heterologous antigens on their surface. As a proof of concept, the Borrelia burgdorferi antigens OspA and OspC were expressed on Neisseria meningitidis OMVs to create a concept anti-Lyme disease vaccine. Production of OMVs released in the culture supernatant was induced by high dissolved oxygen concentrations and purification was based on scalable unit operations. A crude recovery of 90 mg OMV protein could be obtained per liter culture. Expressing heterologous antigens on the OMVs did result in minor reduction of bacterial growth, while OMV production remained constant. The antigen expression did not alter the OMV characteristics. This study shows that production of well characterized OMVs containing heterologous antigens is possible with high yields by combining high oxygen concentrations with an optimized purification process. It is concluded that heterologous OMVs show potential as a vaccine platform.
外膜囊泡(OMVs)是革兰氏阴性细菌产生的纳米颗粒,可以用作疫苗。通过在 OMV 上表达异源抗原,创建基于 OMV 的抗原呈递平台,可以扩展 OMV 作为疫苗成分的应用。本研究旨在开发这种基于 OMV 的疫苗的生产工艺,并研究一种基于脑膜炎奈瑟菌 OMV 的生产方法,该方法在其表面表达异源抗原。作为概念验证,在脑膜炎奈瑟菌 OMV 上表达了伯氏疏螺旋体抗原 OspA 和 OspC,以创建一种抗莱姆病疫苗的概念。通过高溶解氧浓度诱导培养上清液中释放的 OMV 的产生,并基于可扩展的单元操作进行纯化。每升培养物可获得 90mg OMV 蛋白的粗回收。在 OMV 上表达异源抗原确实会导致细菌生长略有减少,而 OMV 的产生保持不变。抗原表达并未改变 OMV 的特性。这项研究表明,通过将高氧浓度与优化的纯化工艺相结合,使用高产量生产具有高特征的含有异源抗原的 OMV 是可能的。结论是,异源 OMV 作为疫苗平台具有潜力。
Microb Cell Fact. 2018-10-3
Biotechnol J. 2015-9
Methods Mol Biol. 2024
Clin Transl Immunology. 2024-6-26
Front Immunol. 2024-4-8
Front Microbiol. 2024-3-12
Front Microbiol. 2024-1-26
J Nanobiotechnology. 2024-1-3
BioDrugs. 2024-1