11 results about "High mannose" patented technology

The invention relates to the technical field of biology, in particular to a hexanose-2-epimerase mutant and application thereof. According to the hexaldehyde aldose-2-epimerase mutant and the application of the hexaldehyde aldose-2-epimerase mutant in the embodiment of the invention, the hexaldehyde aldose-2-epimerase mutant generates mutation beneficial to improvement of hexaldehyde aldose-2 hydroxyl isomerization catalytic activity at at least one key site in an amino acid sequence as shown in SEQ ID NO: 19; through the mode, the hexaldehyde sacchar-2-epimerase mutant shows excellent hexaldehyde sugar C-2 hydroxyl isomerization catalytic activity, can efficiently convert D-glucose into D-mannose, and is beneficial to improving the synthesis efficiency of the D-mannose.

Pharmaceutical compositions comprising anti-interleukin 12 (IL-12) interleukin 23 (IL-23) antibodies are described. The pharmaceutical compositions may comprise molecular attributes, such as oxidation of light chain W32, isoaspartic acid at heavy chain position D55; high molecular weight species such as dimers and / or oligomers, high mannose, sialylation, or acidic peak species. Method comprising administering the pharmaceutical compositions are described. Methods of manufacturing the pharmaceutical compositions are described.

A nucleic acid construct comprising a first polynucleotide encoding MGAT1 gene or a homologous gene having at least 85% sequence identity thereof, a second polynucleotide encoding MGAT2 gene or a homologous gene having at least 85% sequence identity thereof, and a third polynucleotide encoding MAN2A2 gene or a homologous gene having at least 85% sequence identity thereof. A nucleic acid construct combination comprising a first, a second, and a third nucleic acid constructs, which comprise a first polynucleotide encoding MGAT1 gene or a homologous gene having at least 85% sequence identity thereof, a second polynucleotide encoding MGAT2 gene or a homologous gene having at least 85% sequence identity thereof, and a third polynucleotide encoding MAN2A2 gene or a homologous gene having at least 85% sequence identity thereof respectively. A method of regulating the high mannose glycoform content of a recombinant protein during a mammalian cell culture process is also provided, which comprises an expression of the recombinant protein and an overexpression of three proteins that are involved in an N-glycosylation pathway in a mammalian host cell. A highly effective method for reducing the high mannose glycoform content of recombinant proteins in CHO cells.

The present invention relates to methods of upregulating the high mannose glycoform content of a recombinant protein during a mammalian cell culture by manipulating the mannose to total hexose ratio in the cell culture media formulation.

A method is provided for determining the relative unpaired glycan content of an IgG antibody composition. In an exemplary embodiment, the method comprises (b) treating the IgG antibody composition with two enzymes to form a mixture of Fab fragments and Fc fragments, wherein one enzyme cleaves the antibody heavy chain at the N-terminal site of the hinge region disulfide bond and the other enzyme cleaves the β1,4 bond between core GlcNAc residues to form Fc fragments, each containing a pair of coreglycan structures; (b) separating the Fab fragments from the Fc fragments; and (c) quantifying the abundance of (i) paired non-fucosylated Fc fragments, (ii) unpaired non-fucosylated Fc fragments, (iii) paired high-mannose Fc fragments, and / or (iv) unpaired high-mannose Fc fragments to determine the relative unpaired non-fucosylated (AF) glycan content and the relative unpaired high-mannose (HM) glycan content.

Methods of determining glycan pairing content of a protein composition are provided. In exemplary embodiments, the method comprises (a) treating a sample of the protein composition with (i) a mannosidase and (ii) a β1-4 endoglycosidase, to produce a mixture of components of the protein, wherein at least some of the components comprises one or more digested glycan structures; and (b) separating the components of the mixture based on molecular weight; and (c) quantifying the abundance of glycan pairs, optionally, quantifying (i) paired afucosylated glycans, (ii) unpaired afucosylated glycans, (iii) paired high mannose glycans, and / or (iv) unpaired high mannose glycans, of the mixture. In exemplary aspects, the method comprises quantifying the relative unpaired afucosylated (AF) glycan content and / or relative unpaired high mannose (HM) glycan content of the mixture.

To provide a method for producing anti-IL-36R antibodies, spesolimab.SOLUTION: To provide a method for producing spesolimab using a serum-free cell culture medium in a fed-batch culture in the presence of a reduced copper concentration and an elevated iron concentration. In addition, the present invention provides compositions comprising reduced levels of basic species of Spesolimab and / or reduced levels of Spesolimab species with high mannose structures.SELECTED DRAWING: None

The present invention relates to a method for producing the anti-IL36R antibody spesolimab. More specifically, the present invention relates to a method of producing spesolimab with a serum-free cell culture medium in a fed-batch culture in the presence of reduced copper and increased iron concentrations. In addition, the present invention relates to a composition comprising low levels of basic species of spesolimab and / or low levels of spesolimab species with high mannose structures.

Recombinant human alpha glucosidase (rhGAA) compositions derived from CHO cells are disclosed, comprising a more optimal glycan composition consisting of rhGAA with higher amounts of N-glycans bearing mannose-6-phosphate (M6P) or bis-M6P, along with low amounts of non-phosphorylated high mannose glycans, than conventional rhGAA, along with low amounts of terminal galactose on complex oligosaccharides. Compositions comprising the rhGAA are described, as are methods of use.

Recombinant human alpha glucosidase (rhGAA) composition derived from CHO cells that contains a more optimized glycan composition consisting of a higher amount of rhGAA containing N-glycans carrying mannose-6-phosphate (M6P) or bis-M6P than conventional rhGAAs, along with low amount of non-phosphorylated high mannose glycans, and low amount of terminal galactose on complex oligosaccharides. Compositions containing the rhGAA, and methods of use are described

The application discloses a method for improving expression of exogenous glycoprotein by yeast, comprising the following steps: without changing endogenous genes of a yeast host cell and without introducing exogenous sugar chain processing enzymes, an exogenous N-acetylglucosamine transferase I (GnT1) gene from different species is integrated into a genome of a Pichia pastoris host bacterium for expressing glycoprotein, and a Pichia pastoris engineering bacterium for expressing the exogenous GnT1 is constructed, so that the expression amount of the exogenous glycoprotein in the Pichia pastoris engineering bacterium is significantly improved, the proportion of high mannose type N-glycan is reduced, and the proportion of complex type N-glycan is increased. The method is suitable for biosynthesis of polysaccharide glycosylation protein, high isoelectric point protein and complex folding protein, and has good popularization and application prospect in the fields of biological pharmacy, functional protein, nutritional and healthy raw material and industrial biological manufacturing.