Development of a high-yield live-virus vaccine production platform using a novel fixed-bed bioreactor
| Autor: | Alex Chatel, Eric M. Vela, Dalton M. Berrie, Christopher Montoya, Robin C. Waters |
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| Rok vydání: | 2019 |
| Předmět: |
Virus Cultivation
viruses 030231 tropical medicine Vaccines Attenuated Cell Line 03 medical and health sciences Laboratory flask 0302 clinical medicine Bioreactors Chlorocebus aethiops Bioreactor Animals 030212 general & internal medicine Vero Cells Fixed bed bioreactor Live virus General Veterinary General Immunology and Microbiology biology Viral Vaccine Public Health Environmental and Occupational Health Viral Vaccines biology.organism_classification Virology Single-use bioreactor Infectious Diseases Vesicular stomatitis virus Vero cell Molecular Medicine |
| Zdroj: | Vaccine. 38(20) |
| ISSN: | 1873-2518 |
| Popis: | The increasing importance of viral vaccine manufacturing has driven the need for high cell density process optimization that allows for higher production levels. Vero cells are one of the more popular adherent cell lines used for viral vaccine production. However, production is limited due to the logistical limitations surrounding adherent cell line processes, such as large equipment footprints, time and labor-intensive processes, and larger costs per dose. We have addressed this limitation with the establishment of a viral vaccine production system utilizing the novel single use scale-X™ carbo bioreactor. The unit is compact and is scalable and one of the novel features of the system is the continuous in-line downstream purification and concentration processes associated with the bioreactor vessel. We present the results from a campaign featuring a proprietary Vero cell line for production of a live recombinant Vesicular stomatitis virus vaccine that features the Lassa Fever virus glycoproteins. Metabolite analyses and viral yield comparison between traditional flasks, cell factories, and the scale-X carbo bioreactor were performed, and on average, the single use bioreactor produced 2–4 logs higher titers per surface area, approximately 5 × 1010 pfu/cm2, compared to classical flatstock, 2.67 × 106 pfu/cm2, and cell factories production, 5.77 × 108 pfu/cm2. Overall, we describe a novel bioreactor platform that allows for a cost-efficient and scalable process for viral vaccine production. |
| Databáze: | OpenAIRE |
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