Purification of alpha-1 proteinase inhibitor using novel chromatographic separation conditions

Purification of alpha-1 proteinase inhibitor using novel chromatographic separation conditions

Cation chromatography with solutions at pH less than 6.0 and low ionic strength can be utilized to purify human alpha -1 proteinase inhibitor ( alpha -1 PI) from biological fluids including plasma and plasma fractions. The cation chromatography takes advantage of the fact that active alpha -1 PI doe...

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Hauptverfasser: LEBING, WYTOLD R, CHEN, SHARON X
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PEPTIDES
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Zusammenfassung:Cation chromatography with solutions at pH less than 6.0 and low ionic strength can be utilized to purify human alpha -1 proteinase inhibitor ( alpha -1 PI) from biological fluids including plasma and plasma fractions. The cation chromatography takes advantage of the fact that active alpha -1 PI does not bind to the cation column under these conditions but other proteins, including denatured alpha -1 PI and albumin, do. The effect is that active alpha -1 PI flows through the chromatography column leaving the contaminating proteins behind. Recovery of alpha -1 PI is high and improvement of purity is dramatic.