摘要:
The present invention provides a manufacturing method for the production of peptides that are grown in insect cell lines. The peptides are grown in insect cell cultures that are infected with baculovirus particles in a culture supplemented with a lipid mixture. The peptides are then isolated from the insect cell culture using a method that employs a tangential flow filtration cascade. The isolated peptides are glycopeptides having an insect specific glycosylation pattern. The glycopeptides may then be conjugated to a modifying group via linkage through a glycosyl linking group interposed between and covalently attached to the peptide and the modifying group. The conjugates are formed from glycosylated peptides by the action of a glycosyltransferase.
摘要:
Methods for making modified Fc regions of antibodies and antibody fragments, both human and humanized, and having enhanced stability and efficacy, are provided. Antibodies comprising Fc regions with core fucose residues removed, and attached to oligosaccharides comprising terminal sialyl residues, are provided. Antibodies comprising homogeneous glycosylation of Fc regions with specific oligosaccharides are provided. Fc regions conjugated with homogeneous glycoforms of monosaccharides and trisaccharides, are provided. Methods of preparing human antibodies with modified Fc using glycan engineering, are provided.
摘要:
The present invention relates to a method for the production and purification of a sialyltransferase polypeptide, in particular a N-Acetylgalactosamine (Gal NAc)-α-2,6-sialyltransferase I (ST6GalNAcI) polypeptide. The method comprises the steps of producing the sialyltransferase polypeptide in a Chinese Hamster Ovary (CHO) cell and purifying the polypeptide with a combination of chromatography steps. The method results in high yield of sialyltransferase polypeptide which is highly pure and active. The obtained sialyltransferase, especially ST6GalNAcI, can be employed for the glycosylation of therapeutic proteins such as G-CSF.
摘要:
The present invention relates to a method for the production and purification of a sialyltransferase polypeptide, in particular a N-Acetylgalactosamine (Gal NAc)-α-2,6-sialyltransferase I (ST6GalNAcI) polypeptide. The method comprises the steps of producing the sialyltransferase polypeptide in a Chinese Hamster Ovary (CHO) cell and purifying the polypeptide with a combination of chromatography steps. The method results in high yield of sialyltransferase polypeptide which is highly pure and active. The obtained sialyltransferase, especially ST6GalNAcI, can be employed for the glycosylation of therapeutic proteins such as G-CSF.