Recombinant protein production in large-scale agitated bioreactors using the baculovirus expression vector system

Area of Science:

• Biotechnology
• Bioprocess Engineering
• Molecular Biology

Background:

• The baculovirus expression vector system (BEVS) is a key tool for recombinant protein production.
• Scaling up BEVS processes in agitated bioreactors presents unique challenges.
• Optimizing insect cell culture conditions is crucial for efficient protein yield.

Purpose of the Study:

• To provide detailed methods for large-scale recombinant protein production using BEVS in agitated bioreactors.
• To present strategies for online monitoring and bioreactor control to enhance process success.
• To explore advanced monitoring of physiological parameters for high cell density cultures.

Main Methods:

• Describes key stages of a batch process: host cell growth, virus amplification and quantification, bioreactor operation, infection, harvesting, and primary separation.
• Includes methods for online monitoring of physiological parameters like biovolume and respiration activity.
• Details techniques for bioreactor control in batch and fed-batch insect cell cultures.

Main Results:

• Presents a comprehensive workflow for large-scale BEVS production.
• Highlights the impact of online monitoring and advanced control on process outcomes.
• Demonstrates the application of physiological parameter monitoring for high cell density cultures.

Conclusions:

• Successful large-scale recombinant protein production relies on optimized batch processes and effective bioreactor control.
• Advanced online monitoring of insect cell culture physiology is essential for achieving high cell densities and maximizing product recovery.
• This chapter provides a practical guide for implementing and controlling BEVS in industrial bioprocessing.