Disclosed are immunization antigens that have been glyco-engineered to include non-native glycosylation patterns with a view to enhance their properties as antigens for use in such areas as vaccination and antibody production. Also disclosed are to means and methods for producing the glycomodified antigens as well of methods and uses of the glycomodified antigens.

The present invention is in the technical field of synthetic biology, metabolic engineering and cell cultivation. The present invention describes methods for the production of a fucosylated compound comprising Gal-1,3-[Fuc-1,4]-GlcNAc using a fucosyltransferase as well as the purification of said fucosylated compound, said fucosyltransferase having alpha-1,4-fucosyltransferase activity on the N-acetylglucosamine (GlcNAc) residue of Gal-1,3-GlcNAc (lacto-N-biose, LNB) and/or Gal-1,3-GlcNAc of a saccharide substrate comprising Gal-1,3-GlcNAc. The present invention also provides a cell for production of a fucosylated compound comprising Gal-1,3-[Fuc-1,4]-GlcNAc.

The disclosure is in the technical field of synthetic biology and metabolic engineering. More particularly, the disclosure is in the technical field of cultivation or fermentation of metabolically engineered cells. The disclosure describes a cell metabolically engineered for production of a mixture of at least three different mammalian milk oligosaccharides. Furthermore, the disclosure provides a method for the production of a mixture of at least three different mammalian milk oligosaccharides by a cell as well as the purification of at least one of the mammalian milk oligosaccharides from the cultivation.

Provided herein are genetically modified yeast cells capable of producing one or more human milk oligosaccharides (HMOs) and methods of making such cells. The yeast cells are engineered to comprise a heterologous nucleic acid encoding a transporter protein and one or more heterologous nucleic acids that encode enzymes of a HMO biosynthetic pathway. Also provided are fermentation compositions including the disclosed genetically modified yeast cells, and related methods of producing and recovering HMOs generated by the yeast cells.

The present disclosure relates to improved strains for the production of Human Milk Oligosaccharides (HMOs) in large scale. The strains are genetically engineered to produce less acetate and/or ethanol during large-scale fermentation, in particular when encountering gradients with excess carbon source in the fermenter.

This disclosure is in the technical field of synthetic biology and metabolic engineering. More particularly, this disclosure is in the technical field of cultivation or fermentation of metabolically engineered cells. This disclosure describes a cell metabolically engineered for production of a mixture of at least three different oligosaccharides. Furthermore, this disclosure provides a method for the production of a mixture of at least three different oligosaccharides by a cell as well as the purification of at least one of the oligosaccharides from the cultivation.

Provided herein are antibodies that target tumors, wherein the binding of the antibody to the tumor is dependent on the expression of one or more glycosyltransferases in the tumor. These antibodies bind preferentially to tumor tissue as compared to normal tissue. Such antibodies are used in methods of inhibiting tumor cell growth.

Production of a mixture of neutral fucosylated oligosaccharides by a cell. The disclosure is in the technical field of synthetic biology and metabolic engineering. More particularly, the disclosure is in the technical field of cultivation or fermentation of metabolically engineered cells. The disclosure describes a cell metabolically engineered for production of a neutral mixture of at least four different neutral fucosylated oligosaccharides. Furthermore, the disclosure provides a method for the production of a neutral mixture of at least four different neutral fucosylated oligosaccharides by a cell as well as the purification of at least one of the neutral oligosaccharides from the cultivation.

Provided herein are genetically modified yeast cells capable of producing one or more human milk oligosaccharides (HMOs) and methods of making such cells. The yeast cells are engineered to comprise a heterologous nucleic acid encoding a transporter protein and one or more heterologous nucleic acids that encode enzymes of a HMO biosynthetic pathway. Also provided are fermentation compositions including the disclosed genetically modified yeast cells, and related methods of producing and recovering HMOs generated by the yeast cells.