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Advancing Drug Formulation Additives toward Precision Additives with Release Mediating Peptide Interlayer
- Wieczorek, Sebastian, Dallmann, André, Kochovski, Zdravko, Börner, Hans G.
- Journal of the American Chemical Society 2016 v.138 no.30 pp. 9349-9352
- additives, cost effectiveness, photosensitizing agents, polyethylene glycol, solubility
- Amphiphilic drug formulation additives based on palmitic acid-modified poly(ethylene glycol) (Pal-PEG) are combined with a tailored drug binding peptide that is positioned at the hydrophobic–hydrophilic interface. The peptide originates from combinatorial selection and enables precise modulation of the drug release profiles. While Pal provides a cost-effective reservoir for drug storage, the PEG realizes solubility and shielding. The precision additives reach high payloads close to 1:1, rendering a photosensitizer water-soluble and providing adjustable drug activation kinetics by fine-tuning the peptide interface layer.