Protein stabilization in aqueous solutions of polyphosphazene polyelectrolyte and non-ionic surfactants.

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TitleProtein stabilization in aqueous solutions of polyphosphazene polyelectrolyte and non-ionic surfactants.
Publication TypeJournal Article
Year of Publication2010
AuthorsMarin, A, Decollibus, DP, Andrianov, AK
JournalBiomacromolecules
Volume11
Issue9
Pagination2268-73
Date Published2010 Sep 13
ISSN1526-4602
KeywordsAdjuvants, Immunologic, Animals, Cattle, Horseradish Peroxidase, Polymers, Serum Albumin, Bovine, Surface-Active Agents
Abstract

Applications of polyelectrolytes as pharmaceutical excipients or biologically active agents generated an increased interest in formulations, in which ionic macromolecules share the same milieu with protein drugs or vaccine antigens. Macromolecular interactions, which often take place in such systems, can potentially impact formulation activity and stability. The present article reports that poly[di(carboxylatophenoxy)phosphazene], disodium salt (PCPP), which has been previously shown to be a potent vaccine adjuvant, also displays a strong protein stabilizing effect in aqueous solutions that can be significantly amplified in the presence of nonionic surfactants. The phenomenon is studied in the context of macromolecular interactions in the system and is linked to the formation of PCPP-protein and PCPP-protein-surfactant complexes.

DOI10.1021/bm100603p
Alternate JournalBiomacromolecules
PubMed ID20681734