作者:Sibaprasad Maity、Poulami Jana、Suman Kumar Maity、Debasish Haldar
DOI:10.1039/c1sm05958k
日期:——
The self-assembly of a hydrophobic pentapeptide has been investigated in an attempt to develop a drug delivery vehicle. The peptide forms a supramolecular helical column through intra- and intermolecular hydrogen bonding interactions and an interdigitated helical bundle structure in the solid state. In methanol solution, the peptide forms mesoporous vesicles, where the diameters of the vesicles vary with the concentration in direct proportion. The most important property of these mesoporous vesicular structures is the encapsulation of a potent bacteriostatic antibiotic, sulfamethoxazole. Moreover, at pH 6.2, the drug loaded vesicles can effectively release the encapsulated drug slowly, which holds future promise for use of the microvesicles as drug cargo.
为了开发一种药物输送载体,我们对疏水五肽的自组装进行了研究。该肽通过分子内和分子间的氢键相互作用形成超分子螺旋柱,并在固态下形成相互交错的螺旋束结构。在甲醇溶液中,多肽形成介孔囊泡,囊泡的直径与浓度成正比变化。这些介孔囊泡结构最重要的特性是能包裹一种强效抑菌抗生素--磺胺甲噁唑。此外,在 pH 值为 6.2 的条件下,载药囊泡能有效地缓慢释放包裹的药物,这为未来将微囊泡用作药物载体带来了希望。