Method of purifying apolipoprotein a-1

C - Chemistry – Metallurgy – 07 – K

Patent

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C07K 14/755 (2006.01) C07K 1/18 (2006.01) A61K 38/17 (2006.01)

Patent

CA 2673516

A method of purifying apolipoprotein A-I includes mixing plasma fraction IV acquired by the Cohn Ethanol Fractionation method with a 1-8 M urea solution to form a fraction IV pretreatment solution; loading the pretreatment solution to a first anion chromatography column, and then eluting with a 1-8 M urea solution to obtain an apoA-1 protein solution; and loading the apoA-1 protein solution from in a second anion chromatography column, and eluting with 0-1 M urea solution to obtain pure apoA-1 protein.

La présente invention concerne un procédé de purification de l'apolipoprotéine A-1 qui comprend le mélange de la fraction IV de plasma obtenue par le procédé de fractionnement de l'éthanol de Cahn avec une solution d'urée de concentration allant de 1 à 8 M afin de former une solution de prétraitement de la fraction IV ; l'alimentation de la solution de prétraitement dans une première colonne de chromatographie anionique, et ensuite l'élution avec une solution d'urée de concentration allant de 1 à 8 M afin d'obtenir une solution de protéine apoA-1 ; et l'alimentation de la solution de protéine apoA-1 dans une seconde colonne de chromatographie anionique, et l'élution avec une solution d'urée de concentration allant de 0 à 1 M afin d'obtenir la protéine apoA-1 pure.

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