Purification of factor ix

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 9/64 (2006.01) C07K 1/36 (2006.01) C12N 7/06 (2006.01)

Patent

CA 2139931

The present invention relates to a process for purifying Factor IX from an impure protein fraction containing Factor IX. The purification process comprises the steps of adding a solvent and a detergent to an impure protein fraction and incubating the solvent/detergent protein solution to inactivate any viral contaminants. Factor IX is purified from the solvent/detergent protein solution by chromatography on a sulfated polysaccharide resin without first removing the solvent and detergent prior to the purification- on the sulfated polysaccharide resin. The Factor IX, purified by the process has a specific activity of at least 85 units/mg.

Enter the French Abstract here.@F@La présente invention se rapporte à un procédé de purification du Facteur IX à partir d'une fraction protéique impure contenant le Facteur IX. Le procédé de purification consiste à ajouter un solvant et un détergent à une fraction protéique impure et à incuber la solution protéique comprenant le solvant/détergent afin d'inactiver tout agent contaminant viral. Le Facteur IX est purifié à partir de la solution protéique à solvant et détergent par chromatographie sur une résine de polysaccharide sulfatée sans enlever au préalable le solvant et le détergent avant ladite purification sur la résine de polysaccharide sulfatée. Le Facteur IX, purifié selon ce procédé, présente une activité spécifique d'au moins 85 unités/mg.

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