Abstract
A three-step protocol is described for adapting an anchorage-dependent, serum-dependent recombinant mammalian cell lineage to high density serum-free suspension culture. The objective is a cell lineage that is well-suited for the manufacture of a recombinant protein. The first step of the protocol generates an anchorage-independent cell lineage by culturing trypsin-treated cells in spinner flasks using serum-containing medium. The second step adapts the lineage to serum-free medium through a series of serum reduction steps in the presence of defined growth-promoting additives. The third step adapts the lineage to high-cell-density conditions by culturing the cells in a bioreactor in a manner that allows development of tolerance to growth-inhibiting substances released by the cells. Examples are presented for the use of this protocol for recombinant CHO cells.
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Sinacore, M.S., Drapeau, D. & Adamson, S.R. Adaptation of mammalian cells to growth in serum-free media. Mol Biotechnol 15, 249–257 (2000). https://doi.org/10.1385/MB:15:3:249
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DOI: https://doi.org/10.1385/MB:15:3:249