Continuous microcarrier-based cell culture in a benchtop microfluidic bioreactor.

Area of Science:

• Biotechnology
• Cell Biology
• Bioengineering

Background:

• Microfluidic bioreactors offer precise control over cellular microenvironments, crucial for cell therapy and biopharmaceutical production.
• Current methods for continuous cell culture often face challenges in cell manipulation and extraction.

Purpose of the Study:

• To develop a novel microfluidic bioreactor for continuous culture of anchorage-dependent cells.
• To enable incubator-free cell culture with controlled microenvironmental conditions.
• To facilitate easy and harmless cell extraction from the system.

Main Methods:

• Utilized microcarriers (microbeads) for anchorage-dependent cell growth.
• Integrated a porous membrane for a perfusion-based continuous feeding system.
• Employed computational simulations to optimize perfusion rates for stable biochemical environments.
• Implemented thermal management for homogeneous bioreactor temperature control.

Main Results:

• Successfully achieved incubator-free continuous cell culture for over a week for Drosophila S2 and PC3 cells.
• Demonstrated ease of cell manipulation and harmless cell extraction using the microcarrier approach.
• Validated the stability of the biochemical environment through optimized perfusion rates.
• Showcased potential for efficient cell harvesting via microcarrier digestion.

Conclusions:

• The developed microfluidic bioreactor provides a robust platform for continuous cell culture.
• This system offers significant advantages for cell therapy and biopharmaceutical manufacturing by enabling controlled, incubator-free expansion and simplified cell recovery.
• Further research into microcarrier digestion could lead to more efficient cell harvesting techniques.