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Microscopic visualization of insect cell-bubble interactions. I: Rising bubbles, air-medium interface, and the foam
F Bavarian1, L S Fan, J J Chalmers
1Department of Chemical Engineering, Ohio State University, Columbus 43210.
Biotechnology Progress
|March 1, 1991
Summary
This study used high-speed video to observe insect cell lines Trichoplusia ni (TN-368) and Spodoptera frugiperda (SF-9) interacting with bubbles. Findings reveal cell-bubble dynamics and potential damage mechanisms during sparging.
Area of Science:
- Biotechnology
- Cell Biology
- Bioprocess Engineering
Background:
- Insect cell lines are crucial for biopharmaceutical production.
- Sparging processes in bioreactors can cause cell damage.
- Understanding cell-bubble interactions is vital for optimizing bioprocesses.
Purpose of the Study:
- To investigate the physical interactions between insect cells and gas bubbles.
- To identify mechanisms leading to cell damage during sparging.
Main Methods:
- Utilized microscopic, high-speed video technology.
- Observed two suspended insect cell lines: Trichoplusia ni (TN-368) and Spodoptera frugiperda (SF-9).
- Analyzed cell-bubble attachment, collision, transport, and trapping phenomena.
Main Results:
- Documented various cell-bubble interaction events, including attachment, collision, and foam layer trapping.
- Provided visual evidence of cell dynamics within a sparged environment.
- Identified key stages contributing to potential cell damage.
Conclusions:
- Cell-bubble interactions significantly influence cell viability in sparged bioreactors.
- Mechanisms of cell damage are linked to physical events during sparging.
- These findings inform strategies to mitigate cell damage in insect cell culture.