Screening tool for hollow-fiber bioreactor process development

Biotechnology Progress
M J Gramer, D M Poeschl

Abstract

Fundamental research of factors affecting cell growth in hollow-fiber bioreactors is hindered by the lack of an efficient screening tool. To address this issue, a hollow-fiber micro-bioreactor has been developed. Hollow fibers with 10 kDa molecular weight cutoffs are housed within a piece of silicone tubing. Cells are inoculated within the hollow fibers which provides a 0.2-mL culture volume. The space between the fibers and silicone tubing (5 or 16 mL) is used as a medium reservoir sufficient to feed the cells for at least 24 h. Oxygenation is provided directly through the silicone tubing so that a pump for medium recirculation is not required. As a result, many conditions can be tested simultaneously in a single incubator. Three days after inoculation at 5 x 10(6) cells/mL in the micro-bioreactor, the rho 1D4 murine hybridoma cell line reached 2.8 x 10(7) cells/mL with an antibody concentration of 0.17 mg/mL. When inoculated at 5 x 10(7) cells/mL, the cell concentration reached 1.8 x 10(8)/mL after 3 days with an antibody concentration of 1.0 mg/mL. Results from a series of experiments with the micro-bioreactor suggested that the initial growth phase of this cell line in a hollow-fiber system is dependent on the serum concent...Continue Reading

Citations

Jul 13, 2002·Biotechnology and Bioengineering·Michael J Gramer, Tracey L Britton
Oct 9, 2007·Biotechnology Advances·Era Jain, Ashok Kumar
Oct 7, 2009·Biotechnology Progress·Christopher J DetzelBernard J van Wie
May 21, 2009·Biotechnology Progress·Christopher J DetzelCornelius F Ivory
Mar 6, 2010·Biotechnology Progress·Christopher J DetzelCornelius F Ivory
Jan 1, 2010·Biotechnology Progress·Maria Elisa RodriguesRosário Oliveira
Mar 13, 2012·Cell Transplantation·Michael R DoranLars K Nielsen

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