Physical Entrapment of Adriamycin in AB Block Copolymer Micelles

作者: Glen S. Kwon , Mayumi Naito , Masayuki Yokoyama , Teruo Okano , Yasuhisa Sakurai

DOI: 10.1023/A:1016266523505

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摘要: The entrapment of Adriamycin (ADR) in micelles composed AB block copolymers (poly(ethylene oxide-co-β-benzyl L-aspartate) (PEO-PBLA)) was investigated. loading process involved transfer ADR and PEO-PBLA into an aqueous milieu from dimethyl-formamide (DMF) through a dialysis procedure. Evidence for the physical polymeric derived fluorescence spectroscopy gel permeation chromatography (GPC). total intensity low, suggesting that drug self-associated micelles. In addition, quenching experiments, using water-soluble quencher (iodide (I–)), showed present micellar solutions largely unaffected by I–, whereas free readily quenched. From Stern-Volmer plots, constants (KSV) 2.2 17 M−l were determined ADR, respectively. As result micelles, binds only slightly serum albumin as evidenced GPC. contrast, solutions. findings suggest is stably entrapped expected to affect markedly pharmacokinetics ADR.

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