Self-assembling dipeptide-based nontoxic vesicles as carriers for drugs and other biologically important molecules
作者:Jishu Naskar、Subhasish Roy、Anindita Joardar、Sumantra Das、Arindam Banerjee
DOI:10.1039/c1ob05757j
日期:——
Self-assembling short peptides can offer an opportunity to make useful nano-/microstructures that find potential application in drug delivery. We report here the formation of multivesicular structures from self-assembling water-soluble synthetic amphiphilic dipeptides containing a glutamic acid residue at the C-terminus. These vesicular structures are stable over a wide range of pH (pH 2–12). However, they are sensitive towards calcium ions. This causes the rupturing of these vesicles. Interestingly, these vesicles can not only encapsulate an anticancer drug and a fluorescent dye, but also can release them in the presence of calcium ions. Moreover, these multivesicular structures have the potential to carry biologically important molecules like cyclic adenosine monophosphate (cAMP) within the cells keeping their biological functions intact. A MTT cell-survival assay suggests the almost nontoxic nature of these vesicles. Thus, these peptide vesicles can be used as biocompatible delivery vehicles for carrying drugs and other bioactive molecules.
自组装短肽提供了制造有用的纳米/微观结构的机会,这些结构在药物传递中有潜在应用。我们在此报告了自组装的水溶性合成两肽形成的多囊泡结构,这些两肽在C末端含有谷氨酸残基。这些囊泡结构在广泛的pH范围内(pH 2-12)稳定。然而,它们对钙离子敏感,导致这些囊泡破裂。有趣的是,这些囊泡不仅可以包裹抗癌药物和荧光染料,还能在存在钙离子的情况下释放它们。此外,这些多囊泡结构在细胞内有潜力携带生物重要分子,如环磷酸腺苷(cAMP),同时保持其生物功能完好。MTT细胞存活实验表明,这些囊泡几乎无毒。因此,这些肽囊泡可以作为生物相容性的递送载体,用于携带药物和其他生物活性分子。