Abstract: The present invention discloses a process for engineering a host cell comprising the steps of; a) integrating a first polynucleotide cassette including a first selection marker flanked by a first pair of recombination sites; b) removing the first selection marker by the action of a recombinase which recognises the first pair of recombination sites; c) integrating a second polynucleotide cassette including a second selection marker flanked by a second pair of recombination sites; and d) removing the second selection marker by the action of a recombinase which recognises the second pair of recombination sites. Also disclosed is a host cell genome polynucleotide comprising a first recombinantly engineered region and a second recombinantly engineered region, wherein a first single recombination site is adjacent to the first recombinantly engineered region, and a second single recombination site is adjacent to the second recombinantly engineered region.

Abstract: The disclosure provides synthetic (e.g. recombinant) pneumococcal saccharide comprising one or more repeat unit(s) ?4)-?-D-Glcp-(1?3)-[[?-L-Rhap-(1?2)]-[Gro-(2?P?3)]-?-D-Galp-(1?4)]-?-L-Rhap-(1?. Also provided are conjugates comprising a ?4)-?-D-Glcp-(1?3)-[[?-L-Rhap-(1?2)]-[Gro-(2?P?3)]-?-D-Galp-(1?4)]-?-L-Rhap-(1?, immunogenic compositions, vaccines and their use in preventing or treating infection by Streptococcus pneumoniae.

Abstract: The present disclosure provides monoclonal antibodies (e.g., anti-TNF? antibodies) having Fab sialylation, and, in some aspects, Fab sialylation in combination with an afucosylated Fc. Such antibodies having improved immunogenicity profiles and related advantages. Such glycan modifications will improve current treatments and allow a better quality of life for patients. Accordingly, such monoclonal antibodies are useful for treating and preventing various diseases.

Abstract: Described herein are compositions and methods of producing glycosylated proteins in vitro and in vivo. The methods include using host cells to produce glycosylated proteins. Also described herein are glycosylated proteins produced using such methods and uses thereof.

Abstract: The present invention discloses modified Staphylococcus aureus ClfA proteins that contain glycosylation site consensus sequences. The invention also discloses a conjugate comprising a modified ClfA protein and an antigen (for example a Staphylococcus aureus saccharide antigen), wherein the antigen is linked (either directly or through a linker) to an amino acid residue of the modified ClfA protein.

Abstract: The present application relates to Leishmania cells genetically engineered such that the formation of an O-linked GlcNAc on a polypeptide in the Leishmania cell is reduced or eliminated. The formation of the O-linked GlcNAc may be catalyzed in the Leishmania cell prior to said genetic engineering by at least one N-acetylglucosamine (GlcNAc)-transferase. Also provided herein are methods of making a polypeptide using a Leishmania cell described herein and polypeptides produced by the methods provided herein.

Abstract: The disclosure provides synthetic (e.g. recombinant) pneumococcal saccharide comprising one or more repeat unit(s) ?4)-?-D-Glcp-(1?3)-[[?-L-Rhap-(1?2)]-[Gro-(2?P?3)]-?-D-Galp-(1?4)]-?-L-Rhap-(1?. Also provided are conjugates comprising a ?4)-?-D-Glcp-(1?3)-[[?-L-Rhap-(1?2)]-[Gro-(2?P?3)]-?-D-Galp-(1?4)]-?-L-Rhap-(1?, immunogenic compositions, vaccines and their use in preventing or treating infection by Streptococcus pneumoniae.

Abstract: The disclosure provides synthetic (e.g. recombinant) pneumococcal saccharides comprising one or more repeat unit(s) ?4)-?-D-Glcp-(1?4)-[Gro-(2?P?3)]-?-D-Galp-(1?4)-?-L-Rhap-(1?. Also provided are conjugates comprising a ?4)-?-D-Glcp-(1?4)-[Gro-(2?P?3)]-?-D-Galp-(1?4)-?-L-Rhap-(1?, immunogenic compositions, vaccines and their use in preventing or treating infection by Streptococcus pneumoniae.

Abstract: The present application relates to a method of recombinantly engineering a Leishmania cell that involves homologous recombination of DNA fragments. Further provided herein are Leishmania cells recombinantly engineered using the method provided herein. Also provided herein are methods of making a polypeptide using a Leishmania cell described herein and polypeptides produced by the methods provided herein.

Abstract: The present invention relates to methods of protein purification, in particular using ion exchange chromatography. Modified proteins and peptide tags suitable for use in purification by ion exchange chromatography are provided, as are related methods.

Abstract: The present invention discloses modified Staphylococcus aureus HIa proteins which show reduced tendency to aggregate, improving protein stability and yield. Said modified HIa proteins optionally also contain glycosylation site consensus sequences. The invention also discloses a conjugate comprising a modified HIa protein and an antigen (for example a Staphylococcus aureus saccharide antigen), wherein the antigen is linked to an amino acid residue of the modified HIa protein.

Abstract: Described herein are methods of producing glycosylated proteins in vitro and in vivo. The methods include using host cells to produce glycosylated proteins. Also described herein are glycosylated proteins produced using such methods and uses thereof.

Abstract: The disclosure provides synthetic (e.g. recombinant) pneumococcal saccharides comprising one or more repeat unit(s) ?4)-?-D-Glcp-(1?4)-[Gro-(2?P?3)]-?-D-Galp-(1?4)-?-L-Rhap-(1?. Also provided are conjugates comprising a ?4)-?-D-Glcp-(1?4)-[Gro-(2?P?3)]-?-D-Galp-(1?4)-?-L-Rhap-(1?, immunogenic compositions, vaccines and their use in preventing or treating infection by Streptococcus pneumoniae.

Abstract: The present invention discloses modified Staphylococcus aureus HIa proteins which show reduced tendency to aggregate, improving protein stability and yield. Said modified HIa proteins optionally also contain glycosylation site consensus sequences. The invention also discloses a conjugate comprising a modified HIa protein and an antigen (for example a Staphylococcus aureus saccharide antigen), wherein the antigen is linked to an amino acid residue of the modified HIa protein.

Abstract: Provided herein are host cells capable of producing hybrid oligosaccharides and polysaccharides, wherein said hybrid oligosaccharides and polysaccharides do not comprise a hexose at the reducing end of their first repeat unit. Also provided herein are hybrid oligosaccharides or polysaccharides and bioconjugates which can be produced by the host cells described herein, wherein said bioconjugates comprise a carrier protein linked to a hybrid oligosaccharide or polysaccharide that does not comprise a hexose at the reducing end of its first repeat unit.

Abstract: The present invention discloses a process for engineering a host cell comprising the steps of; a) integrating a first polynucleotide cassette including a first selection marker flanked by a first pair of recombination sites; b) removing the first selection marker by the action of a recombinase which recognises the first pair of recombination sites; c) integrating a second polynucleotide cassette including a second selection marker flanked by a second pair of recombination sites; and d) removing the second selection marker by the action of a recombinase which recognises the second pair of recombination sites. Also disclosed is a host cell genome polynucleotide comprising a first recombinantly engineered region and a second recombinantly engineered region, wherein a first single recombination site is adjacent to the first recombinantly engineered region, and a second single recombination site is adjacent to the second recombinantly engineered region.

Abstract: Described herein are methods of producing glycosylated proteins in vitro and in vivo. The methods include using host cells to produce glycosylated proteins. Also described herein are glycosylated proteins produced using such methods and uses thereof.

Abstract: A process for the production of a glycoconjugate by N-glycosylation of a protein or peptide comprising the sequence D/E-X-N-X-S/T (SEQ ID NO:1), wherein each X is the same or different and is any natural amino acid other than proline, wherein the process comprises reacting the protein or peptide with a polyisoprenyl pyrophosphate of formula (I), or a salt thereof, in the presence of PglB: to produce the glycoconjugate comprising the protein or peptide having a saccharide [S1] linked to the asparagine in the sequence D/E-X-N-X-S/T (SEQ ID NO:1). Polyisoprenylpyrophosphates used as substrates in the biocatalytic process are also provided, as well as certain glycoconjugates.

Abstract: Described herein are compositions and methods of producing glycosylated proteins in vitro and in vivo. The methods include using host cells to produce glycosylated proteins. Also described herein are glycosylated proteins produced using such methods and uses thereof.

Abstract: The present invention discloses modified Staphylococcus aureus HIa proteins which show reduced tendency to aggregate, improving protein stability and yield. Said modified HIa proteins optionally also contain glycosylation site consensus sequences. The invention also discloses a conjugate comprising a modified HIa protein and an antigen (for example a Staphylococcus aureus saccharide antigen), wherein the antigen is linked to an amino acid residue of the modified HIa protein.