Cells producing glycoproteins having altered glycosylation...

C - Chemistry – Metallurgy – 12 – P

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C12P 21/00 (2006.01) C12N 5/10 (2006.01) C12N 9/24 (2006.01)

Patent

CA 2733362

The present application relates to the field of glyco -engineering, more specifically to eukaryotic cells wherein both an endoglucosaminidase and a glycoprotein are present. These cells can be used to deglycosylate or partly deglycosylate the (exogenous) glycoprotein, in particular without the need for adding an extra enzyme. Methods are also provided for the application of these cells in protein production. According to one specific aspect, the eukaryotic cells and methods are glyco-engineered yeast cells in which additionally at least one exogenous enzyme needed for complex glycosylation is present, e.g. allowing easier separation of differentially glycosylated glycoproteins.

La présente invention concerne le domaine de la glyco-ingénierie, plus précisément des cellules eucaryotes dans lesquelles à la fois une endoglucosaminidase et une glycoprotéine sont présentes. Ces cellules peuvent être utilisées pour déglycosyler ou déglycosyler partiellement la glycoprotéine (exogène), en particulier sans avoir besoin d'ajouter une autre enzyme. L'invention porte également sur des procédés pour l'application de ces cellules dans la production de protéines. Selon un aspect spécifique, les cellules eucaryotes et les procédés sont des cellules de levure modifiées par glyco-ingénierie dans lesquelles de plus au moins une enzyme exogène nécessaire pour la glycosylation complexe est présente, par exemple, permettant une séparation plus facile de glycoprotéines glycosylées de façon différentielle.

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