4.3 Article

Production of a sialylated N-linked glycoprotein in insect cells

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BIOTECHNOLOGY PROGRESS
卷 17, 期 5, 页码 822-827

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AMER CHEMICAL SOC
DOI: 10.1021/bp010071h

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Under High Aspect Ratio Vessel (HARV) bioreactor culture conditions designed to simulate the microgravity of orbital space flight, insect tissue culture cells infected with a baculovirus expression vector produced a human glycoprotein with tri- and tetra-antennary complex N-linked oligosaccharides containing terminal sialic acid residues. The oligosaccharide structures were similar to those produced in human placental cells. Insect cells cultured in T-flasks only performed incomplete oligosaccharide processing. The mechanism of HARV-mediated changes in the eukaryotic N-linked glycosylation pathway was investigated and could be mimicked under T-flask growth conditions with the addition of N-acetylmannosamine to the culture medium. The significance of these investigations is discussed with respect to the production of recombinant therapeutic glycoproteins, insect physiology, and orbital space flight.

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