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A bioreactor model of mouse tumor progression
George A Thouas1, John Sheridan, Kerry Hourigan
1Division of Biological Engineering, Faculty of Engineering, Monash University, Wellington Road, Clayton, Victoria 3800, Australia.
Journal of Biomedicine & Biotechnology
|February 22, 2008
Summary
A novel rotating disc bioreactor (RDB) induced phenotypic changes in EL-4 mouse lymphoma cells, promoting tumor-like mass formation and increased interleukin-4 (IL-4) and lactate production, mimicking in vitro tumor progression.
Area of Science:
- Biotechnology
- Cell Biology
- Bioreactor Engineering
Background:
- Standard cell cultures lack physiological relevance.
- Understanding tumor progression requires in vitro models with defined conditions.
Purpose of the Study:
- Investigate a novel rotating disc bioreactor (RDB) for cell culture.
- Evaluate EL-4 mouse lymphoma cell behavior under defined hydrodynamic conditions.
- Compare RDB cultures to static flask cultures.
Main Methods:
- Culture of EL-4 mouse lymphoma cells in a rotating disc bioreactor (RDB).
- Comparison of RDB cultures (agitated and unagitated) with static flask cultures.
- Analysis of cell phenotype, morphology, interleukin-4 (IL-4) production, and lactate levels.
Main Results:
- RDB cultures formed adherent plaques and tumor-like masses, unlike spheroid aggregates in flasks.
- Agitation in RDBs altered plaque morphology and distribution due to fluid mechanics.
- Significant increases in IL-4 and lactate production observed in RDB cultures, suggesting a Warburg effect.
- Cell biomass was comparable between RDB and flask cultures, with a marginal increase at specific speeds.
Conclusions:
- The RDB system effectively models tumor progression and invasiveness in vitro.
- Hydrodynamic conditions in RDBs influence cell phenotype and behavior.
- The RDB offers a more physiologically relevant environment for studying cancer mechanisms.
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