Tripodal amphiphiles tunable for self-assembly to polymersomes
- Tripodal amphiphiles tunable for self-assembly to polymersomes
- 전용주; 박민경; Vithal B. Jadhav; 송주희; 채송화; 이화정; 박경수; 정병문; 최진호; 손연수
- Polymersome; Micelle; Amphiphile; Cyclotriphosphazene; Oligopeptide
- Issue Date
- Journal of controlled release
- VOL 142, NO 1, 132-137
- Cyclotriphosphazenes grafted with equimolar amounts of a hydrophilic polyethylene glycol and a hydrophobic oligopeptide in cis-nongeminal way form a new class of tripodal amphiphiles allowing both intra- and intermolecular hydrophobic interactions that differ from linear block copolymer amphiphiles. It has been found in this study that the tripodal amphiphiles can be tuned for self-assembly from micelles to bilayered polymersomes by controlling the hydrophobicity of the oligopeptide grafted. For instance, the tripodal amphiphiles with an intermediate hydrophobicity (0 < log P < 1) (P = [solute]n-octanol / [solute]water) reassemble from initially formed micelles into polymersomes, whereas the trimers bearing highly hydrophobic oligopeptides (log P > 1) remain as stable micelles in aqueous solution. These biodegradable polymersomes exhibit outstanding physicochemical properties required for practical drug delivery and other biomedical applications. In particular, the cyclic phosphazene trimer platinated with a hydrophobic cis-bis(cyclohexylamine)Pt-moiety forms very stable polymersomes with excellent tumor selectivity by EPR effect and seems to be a promising candidate for preclinical studies.
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