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American Journal of Biochemistry and Biotechnology
Year: 2008  |  Volume: 4  |  Issue: 4  |  Page No.: 385 - 392

An Efficient Production of Oligosaccharides by a Reaction using Whole Mammalian Cells as Biocatalysts

Tomohisa Kato, Rie Mitsumori and Kenichi Hatanaka    

Abstract: Problem statement: Mammalian cells were used for the production of oligosaccharides by saccharide primer method. However, because cells in culture are used, productivity of oligosaccharides is low. Approach: In saccharide primer method employing cells under culture, glycosylation was performed only by mixing the collected cells in reaction mixtures. Saccharide primer, 12-azidododecyl β-lactoside that mimics lactosylceramide (LacCer), was incubated with various mammalian cells under stirring or static conditions. The glycosylated primers were generated by adding and agitating cells in reaction mixtures like in the case where cells in culture were treated with saccharide primer. Results: In the case of African green-monkey kidney (Vero) cells, the amount of generated GM3-type oligosaccharide increased approximately five times by the reaction under agitating condition as compared with the reaction with cells in culture. GM3-type oligosaccharide was also synthesized by mouse melanoma B16 cells under both agitating or standing conditions. Moreover, the amount of GM3-type and GM1-type oligosaccharides produced by using African green-monkey kidney COS7 cells only by mixing the collected cells was greater than the general saccharide primer method. Conclusions/Recommendations: We demonstrated that the suspension mixture of the adhesive cells can be used as a catalyst for the synthesis of oligosaccharides in saccharide primer method. Moreover, suspended cells could produce more amount of oligosaccharides than normally cultured cells.

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