[EN] METHODS FOR REDUCING LEVELS OF PROTEIN-CONTAMINANT COMPLEXES AND AGGREGATES IN PROTEIN PREPARATIONS BY TREATMENT WITH ELECTROPOSITIVE ORGANIC ADDITIVES<br/>[FR] PROCÉDÉS DE RÉDUCTION DES NIVEAUX DE COMPLEXES PROTÉINE-CONTAMINANT ET D'AGRÉGATS DANS DES PRÉPARATIONS PROTÉIQUES PAR TRAITEMENT AVEC DES ADDITIFS ORGANIQUES ÉLECTROPOSITIFS
申请人:AGENCY SCIENCE TECH & RES
公开号:WO2013180650A1
公开(公告)日:2013-12-05
Methods for reduction of aggregate levels in antibody and other protein preparations through treatment with low concentrations of electropositive organic additives (e.g., ethacridine, chlorhexidine, or polyethylenimine) in combination with ureides (e.g., urea, uric acid, or allantoin) or organic modulators (e.g., nonionic organic polymers, surfactants, organic solvent or ureides). Some aspects of the invention relate to methods for reducing the level of aggregates in conjunction with clarification of cell culture harvest. It further relates to the integration of these capabilities with other purification methods to achieve the desired level of final purification.