Comparison of cell growth in T-flasks, in micro hollow fiber bioreactors, and in an industrial scale hollow fiber bioreactor system.

In this article, cell growth in a novel micro hollow fiberbioreactor was compared to that in a T-flask and theAcuSyst-Maximizer(R), a large scale industrial hollowfiber bioreactor system. In T-flasks, there was relativelylittle difference in the growth rates of one murine hybridomacultured in three different media and for three other murinehybridomas cultured in one medium. However, substantialdifferences were seen in the growth rates of cells in themicro bioreactor under these same conditions. These differencecorrelated well with the corresponding rates of initial cellexpansion in the Maximizer. Quantitative prediction of thesteady-state antibody production rate in the Maximizer was moreproblematic. However, conditions which lead to faster initialcell growth and higher viable cell densities in the microbioreactor correlated with better performance of a cell line inthe Maximizer. These results demonstrate that the microbioreactor is more useful than a T-flask for determining optimalconditions for cell growth in a large scale hollow fiberbioreactor system.