Vaccine production: upstream processing with adherent or suspension cell lines

Area of Science:

• Biotechnology
• Virology
• Bioprocess Engineering

Background:

• Viral vaccine production relies on cell culture, utilizing primary, diploid, or continuous cell lines.
• Optimizing upstream and downstream processing is crucial for each specific cell line, virus type, and vaccine preparation.
• While adherent cell cultures are common, suspension cell lines are increasingly explored for large-scale production.

Purpose of the Study:

• To outline critical factors for establishing large-scale virus production in bioreactors.
• To detail upstream processing considerations for cell culture-derived influenza virus production.
• To compare adherent and suspension cell culture systems for virus manufacturing.

Main Methods:

• Evaluation of different cell lines (primary, diploid, continuous).
• Selection of production vessels, cultivation conditions, and operational modes.
• Analysis of media types: serum-containing, serum-free, and chemically defined.

Main Results:

• Specific process design is essential for each cell line, virus, and vaccine.
• Suspension cell lines are a growing area of interest for large-scale virus production.
• Influenza virus production was examined as a case study for both adherent and suspension cells.

Conclusions:

• Successful large-scale viral vaccine production necessitates tailored upstream and downstream strategies.
• Media composition and cultivation vessel choice significantly impact virus yield.
• Further research into suspension cell lines can enhance bioreactor-based viral vaccine manufacturing.