Summary
Ascorbic acid (vitamin C) is a primary antioxidant for cells. But, ascorbic acid added to culture medium is not readily available to cells in culture, because it is unstable in aqueous media. We determined the conditions required to obtain and maintain a constant concentration of ascorbate in the culture medium using ascorbate and ascorbate-phosphate. The study was carried out with human fibroblasts and the amounts of ascorbate in the culture medium were determined by high performance liquid chromatography. A mixture of 0.25 mmol/L ascorbate and 0.45 mmol/L ascorbate-phosphate provided a constant concentration of ascorbate in the culture medium. This constant ascorbate concentration proved to be nontoxic for cells and stimulated cell growth in the short term and long term.
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Chepda, T., Cadau, M., Girin, P. et al. Monitoring of ascorbate at a constant rate in cell culture: Effect on cell growth. In Vitro Cell.Dev.Biol.-Animal 37, 26–30 (2001). https://doi.org/10.1290/1071-2690(2001)037<0026:MOAAAC>2.0.CO;2
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DOI: https://doi.org/10.1290/1071-2690(2001)037<0026:MOAAAC>2.0.CO;2