Upstream and Downstream Processes for Viral Nanoplexes as Vaccines

Area of Science:

• Biotechnology
• Virology
• Process Engineering

Background:

• Viral nanoplexes (viruses, virus-like particles) are crucial for vaccines, gene therapy, and oncolytic agents.
• Efficient production is essential due to increasing medical interest and diverse applications.
• Current processes require optimization for yield, speed, and cost-effectiveness.

Purpose of the Study:

• To outline a combined process for efficient virus particle production.
• To detail a platform-based purification strategy for viral nanoplexes.
• To provide analytical methods for virus characterization and contaminant assessment.

Main Methods:

• Utilizing a stirred tank bioreactor for controlled upstream production.
• Implementing filtration-based clarification for initial purification.
• Employing steric exclusion chromatography for downstream processing.
• Incorporating off-line analytics for characterization and quantification.

Main Results:

• Demonstrates a method for successful virus particle production in a bioreactor.
• Validates a purification approach combining filtration and chromatography.
• Provides a framework for analytical characterization and contaminant monitoring.

Conclusions:

• The described process enables efficient production and purification of viral nanoplexes.
• Optimized upstream and downstream processing is key to meeting medical demands.
• Integrated analytical methods ensure product quality and safety.