Abstract
The expansion of stem cell numbers while retaining their developmental properties is a bioprocess challenge. We compared the growth rates and embryoid body (EB) formation yields of R1 and EFC murine embryonic stem cells (mESC) cultured in two basal media (DMEM or DMEM:F12) with additions of 1.7–15% fetal bovine serum (FBS) or serum replacer (KOSR). Whereas the basal medium or KOSR dose did not have a significant effect on growth rate for either cell line, increasing doses of KOSR had a significant negative effect on the EB yield of EFC cells. Use of DMEM:F12 and increasing doses of FBS independently and significantly increased the growth rate for both cell lines. DMEM:F12 also significantly increased EB yields for both cell lines. The results show that use of DMEM:F12 and several-fold lower than conventional concentrations of KOSR can efficiently support maintenance of mESC and that KOSR should be dose as well as lot optimized.
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Acknowledgments
The authors gratefully acknowledge Drs. Connie Eaves and Michael O’Connor for their helpful discussions. Financial support for this work was provided by StemCell Technologies, Inc. (Vancouver, BC) and the Canadian Stem Cell Network of Centres of Excellence.
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Chaudhry, M.A., Vitalis, T.Z., Bowen, B.D. et al. Basal medium composition and serum or serum replacement concentration influences on the maintenance of murine embryonic stem cells. Cytotechnology 58, 173–179 (2008). https://doi.org/10.1007/s10616-008-9177-5
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DOI: https://doi.org/10.1007/s10616-008-9177-5