Effects of Succinic Acid Supplementation on Stable Cell Line Growth, Aggregation, and IgG and IgA Production

Author(s): Victoria Argentova*, Teimur Aliev, Dmitry Dolgikh, Mikhail Kirpichnikov

Journal Name: Current Pharmaceutical Biotechnology

Volume 21 , Issue 10 , 2020

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Graphical Abstract:


Background: Immunoglobulin (Ig) G is the most commonly used therapeutic antibodies. Recently, the interest in IgA antibodies to treat respiratory infectious diseases has been increasing. The reason for the inefficient use of IgA is recombinant antibody aggregation in cell culture, affecting the longevity and productivity of cell lines. Lactate is an important metabolite that affects the cultivation of stable cell lines producing monoclonal antibodies.

Methods: In the present study, we investigated whether different combinations of succinic acid and micro-additives affect lactate production, which correlates with productivity. The effect of succinic acid substitution on productivity of cells producing IgG/IgA was analyzed using the static culture method in a six-well plate. Lactate was measured in supernatant of cell culture indirectly by using the activity of Lactate Dehydrogenase (LDH).A low lactate level was observed in cultivation medium supplemented with succinic acid or asparagine combined with some inorganic salts.

Results: The results also demonstrated the effect of component supplementation on homogeneity, longevity, and productivity of cell culture. Supplementation of succinic acid eliminated cell aggregation and improved homogeneity of stable cell lines producing IgG and, especially, IgA.

Conclusion: Overall, succinic acid supplementation to the culture medium has potential biotechnological applications in the production IgG and IgA.

Keywords: IgG, IgA, lactate, monoclonal antibody, productivity, succinic acid.

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Article Details

Year: 2020
Published on: 06 September, 2020
Page: [990 - 996]
Pages: 7
DOI: 10.2174/1389201021666200312130957
Price: $65

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