Concentrated fed-batch cell culture increases manufacturing capacity without additional volumetric capacity

Area of Science:

• Biotechnology
• Bioprocess Engineering
• Pharmaceutical Manufacturing

Background:

• Biomanufacturing is shifting towards flexible, multi-product facilities to meet dynamic market demands.
• Concentrated fed-batch (CFB) cell culture offers intensified titers, potentially enabling smaller facilities to match larger ones' output.

Purpose of the Study:

• To evaluate the hypothesis that CFB cell culture can increase output in flexible biomanufacturing settings.
• To assess the impact of CFB on cell culture titers, product quality, and operational efficiency.

Main Methods:

• Developed a feeding strategy for CFB cell culture.
• Applied CFB to two distinct cell lines and compared results to traditional fed-batch (TFB) processes.
• Projected CFB output in a 2000-L facility and compared it to a 15,000-L TFB facility.

Main Results:

• CFB significantly improved output for cell line A (105%) and cell line B (70%) compared to TFB.
• CFB enhanced cell line B's charge heterogeneity, indicating product quality benefits.
• Projected output for a 2000-L CFB facility was lower than a 15,000-L TFB facility, and high cell mass complicated operations.

Conclusions:

• CFB demonstrates potential for increased titers and improved product quality in biomanufacturing.
• Operational challenges and eroded volumetric productivity highlight the need for improved specific productivity.
• Enhancing specific productivity is key to realizing CFB's full potential for cost savings and scalability.