Novo Nordisk A/s

Novo Nordisk Healthcare Ag

Are Bogsnes

Per Balschmidt

Arne Staby

Janus Krarup

Haleh Ahmadian

Susanne Bang

Thomas Budde Hansen

Daniel E Rasmussen

Anne Charlotte Arentsen

Xiaoyan Wu

Matthias Karl Dietrich Wiendahl

Lars Sejersgaard

Ingun Christensen

A method for separating on a RP-HPLC system a polypeptide of interest from at least one unwanted component is described, wherein at least one of the elution steps is performed at or in close proximity to the pl value of the peptide of interest.

Preparative RP-HPLC method for purifying peptides

The present invention relates to Vitamin K-dependent protein compositions having a very low, or negligible, content of protein contaminants. The present invention also relates to method applicable in the preparation of such Vitamin K-dependent protein compositions. Such methods may either be used alone or in sequential combination with the purpose of reducing the relative content of protein contaminants. The present invention is particularly relevant in the preparation of compositions of coagulation factors selected from Factor X polypeptides (FX/FXa), Factor IX polypeptides (FIX/FIXa), Factor VII polypeptides (FVII/FVIIa), and the anticoagulant Protein C, in particular Factor VII polypeptides.

Reduction of the content of protein contaminants in compositions comprising a vitamin K-dependent protein of interest

The invention relates to a method of purifying PEGylated proteins by removing impurities from samples containing PEGylated proteins, in particular, but not exclusively vitamin K-dependent blood coagulation factors such as Factor IX (FIX), to proteins purified by said method and to the use of said purified proteins in therapy, in particular but not exclusively, for the treatment of diseases alleviated by blood coagulation factors such as the prophylactic treatment of hemophilia.

Method of purifying pegylated proteins

A preferred way of converting insulin precursors into insulin compounds is to perform an enzymatic peptide cleavage in an aqueous medium and, thereafter, without removal of the intermediate product formed, to add an amino acid ester or a peptide ester and an organic solvent so that the desired coupling takes place.

Process for preparing insulin compounds

The invention concerns a process of chromatographically separating glycosylated proteins from non-glycosylated proteins by subjecting a solution comprising glycosylated and non-glycosylated proteins to chromatography using a Ca,containing eluant. By using this process a fraction comprising non-glycosylated proteins substantially free from glycosylated proteins is obtained. The process may be applied to the separation of proteins used in the medical industry, such as insulin.

Process for the separation of proteins using a CA&plus;&plus; containing eluant

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Are Bogsnes