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Cell retention devices for suspended-cell perfusion cultures
Leda R Castilho1, Ricardo A Medronho
1GBF-German National Research Center for Biotechnology, Biochemical Engineering Division, Braunschweig. ledacastilho@ieg.com.br
Summary
Perfusion cell cultures offer higher productivity and control than batch methods. However, effective cell retention devices are crucial for optimizing these advanced bioprocessing techniques.
Area of Science:
- Biotechnology
- Cell Culture Technology
- Bioprocess Engineering
Background:
- Perfusion cultures offer advantages over batch/fed-batch systems, including higher productivities, consistent product quality, steady-state operation, and enhanced cell physiology control.
- A key challenge in perfusion processes is the requirement for efficient cell retention devices, which impacts performance and scalability.
Purpose of the Study:
- To review and discuss various cell retention devices used in stirred perfusion bioreactors.
- To analyze the advantages and disadvantages of different cell retention technologies for optimizing perfusion cell culture.
Main Methods:
- Review of existing literature and technologies for cell retention in bioreactors.
- Comparative analysis of various cell retention devices, including continuous centrifuges, membrane filters, dynamic filters, spin-filters, ultrasonic separators, dielectrophoretic separators, gravity settlers, and hydrocyclones.
Main Results:
- Perfusion cultures provide significant benefits for animal cell cultivation compared to traditional batch methods.
- Various cell retention devices exist, each with specific pros and cons influencing process performance and scale-up.
Conclusions:
- The selection of an appropriate cell retention device is critical for the successful implementation and scale-up of perfusion cell culture processes.
- Understanding the trade-offs of different retention technologies is essential for optimizing bioprocess efficiency and product quality.