Effects of Stabilizers on the Destabilization of Proteins upon Adsorption to Aluminum Salt Adjuvants
- 1 March 2007
- journal article
- research article
- Published by Elsevier BV in Journal of Pharmaceutical Sciences
- Vol. 96 (3), 547-557
- https://doi.org/10.1002/jps.20762
Abstract
Excipients for protein-based vaccines are currently identified by evaluating the stability of the protein in solution. In most cases, however, the protein is adsorbed to the surface of an aluminum salt adjuvant in the final vaccine formulation. Previous studies showed that model protein antigens may be structurally altered and less thermally stable upon adsorption to aluminum salt adjuvants [Jones LS, Peek LJ, Power J, Markham A, Yazzie B, Middaugh CR, 2005, J Biol Chem 280:13406–13414]. The work presented herein provides evidence that compounds that stabilize the protein in solution also stabilize the adsorbed protein; however, the stability of the adsorbed protein in the presence of the stabilizer remains lower than that of the protein in solution. Potential implications of the reduced stability on the approach used to select excipients during formulation development are discussed.Keywords
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