Long-term stable production of monocyte-colony inhibition factor (M-CIF) from CHO microcarrier perfusion cultures.

Cytotechnology
D KongJ Zhang

Abstract

Monocyte-colony inhibition factor (M-CIF) was produced in microcarrier perfusion cultures from engineered Chinese hamster ovary (CHO) cells. Three and fifteen liter microcarrier perfusion bioreactors equipped with internal spin filters were operated for over two months. Approximately 60 L and 300 L of culture filtrate were harvested from the 3L and 15L microcarrier perfusion bioreactors respectively. During the perfusion operation, cell density reached 2-6 × 10(6) cells/ml. Importantly, stable expression of M-CIF from the CHO cells under non-selection condition was maintained at a level of 4-10 mg/L. Specific productivity was maintained at 1.8-3.4 mg/billion cells/day. The ability of the recombinant CHO cells to migrate from microcarrier to microcarrier under our proprietary HGS-CHO-3 medium greatly facilitated microcarrier culture scale-up and microcarrier replenishment. Future directions for microcarrier perfusion system scale-up and process development are highlighted.

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Citations

Nov 13, 2008·Cytotechnology·Y Wang, F Ouyang
Apr 18, 2013·Expert Opinion on Biological Therapy·Maria Mercedes SeguraAlain Garnier
Jan 1, 2010·Biotechnology Progress·Maria Elisa RodriguesRosário Oliveira
Mar 11, 2020·Frontiers in Nutrition·Vincent BodiouMark J Post

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