Production of sialylated glycoproteins in bryophytes

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/82 (2006.01) A01H 11/00 (2006.01) C12N 9/10 (2006.01) C12N 9/12 (2006.01) C12N 9/90 (2006.01)

Patent

CA 2614998

The present invention relates to a method for producing heterologous glycosylated proteins in non-animal eukaryotic cells such as in transformed bryophyte, yeast, ciliate or algae cells. In particular, the method relates to a method for producing glycosylated proteins comprising animal glycosylation patterns - comprising sialic acid residues -, such as pharmaceutical proteins for use in mammals, e.g. humans, in bryophyte cells such as those of Physcomitrella patens, the genetic material required therefore, such as DNA and RNA, vectors, host cells, methods of introducing genetic material there into, and uses thereof . Furthermore, the present invention relates to novel polypeptides and proteins obtained by the method according to the invention. Moreover, the present invention provides a method of producing sialic acid or CMP- sialic acid in a transformed non-mammalian eukaryotic cell, tissue or organism.

L'invention concerne un procédé permettant de produire des protéines glycosylées hétérologues dans des cellules eucaryotes non animales, par exemple dans des cellules transformées de bryophytes, de levures, de ciliés ou d'algues. En particulier, l'invention porte sur un procédé qui permet de produire des protéines glycosylées comprenant des motifs de glycosylation d'origine animale comprenant des résidus d'acide sialique -, par exemple des protéines pharmaceutiques destinées à l'utilisation chez des mammifères, p.ex. des êtres humains, dans des cellules de bryophytes telles que celles de Physcomitrella patens, sur le matériel génétique requis à cet effet, par exemple de l'ADN et de l'ARN, sur des vecteurs, sur des cellules hôtes, sur des procédés permettant d'y introduire un matériel génétique, et sur des utilisations de ce dernier. L'invention concerne également de nouveaux polypeptides et protéines obtenus selon le procédé de l'invention. En outre, l'invention se rapporte à un procédé permettant de produire de l'acide sialique ou CMP-sialique dans une cellule, un tissu ou un organisme transformé non mammalien.

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