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具有刺激响应特性的自组装双分子囊泡作为仿生双调控纳米平台,用于 pH/温度触发的混合载药释放。

Self-assembled bilosomes with stimuli-responsive properties as bioinspired dual-tunable nanoplatform for pH/temperature-triggered release of hybrid cargo.

机构信息

Department of Physical and Quantum Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.

Department of Physical and Quantum Chemistry, Faculty of Chemistry, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.

出版信息

Colloids Surf B Biointerfaces. 2022 Jul;215:112524. doi: 10.1016/j.colsurfb.2022.112524. Epub 2022 Apr 27.

Abstract

The rapid development of colloid chemistry has raised the possibility of using nanocarriers for the targeted delivery and the controlled drug release at predictable locations to reduce side effects and enhance therapeutic efficacy. In the present work, we focused on the influence of temperature and pH upon in vitro controlled phytochemical/dye-release from a modified bilosome. Drug molecules can affect the properties of nanocarriers, so the effect of encapsulated bioactive compounds on nanoparticle structure has been investigated. The self-assembly process of bioinspired components (i.e., phospholipids, bile salts, and cholesterol), and biocompatible polymeric triblock materials, made it possible to receive structures with a size below 100 nm, demonstrated good capacity for active cargo encapsulation. Differential scanning calorimetry studies showed the possibility of the payloads' interaction with the bilosomes structure. A highly lipophilic compound, such as curcumin, can weaken hydrophobic interactions between the acyl chains of phospholipids, leading to a more flexible membrane. The in vitro release profiles have proved that both solubilities of the therapeutic substances and various environmental conditions affect the release rate of the hybrid cargo. Overall, the obtained double-loaded bilosomes represent a promising bioinspired nanoplatform for oral, intravenous, and topical drug delivery in future biomedical applications.

摘要

胶体化学的迅速发展提出了这样一种可能性,即可以使用纳米载体将药物靶向递送至特定位置,并进行控制释放,以减少副作用,提高治疗效果。在本工作中,我们专注于温度和 pH 值对改性双层囊泡体外控制释放植物化学物质/染料的影响。药物分子会影响纳米载体的性质,因此研究了包封的生物活性化合物对纳米颗粒结构的影响。生物启发成分(即磷脂、胆盐和胆固醇)和生物相容性的两亲性嵌段共聚物的自组装过程,使得接收尺寸小于 100nm 的结构成为可能,并显示出对活性货物的良好封装能力。差示扫描量热法研究表明了有效载荷与双层囊泡结构相互作用的可能性。像姜黄素这样的高疏水性化合物可以削弱磷脂酰基链之间的疏水相互作用,从而使膜更具柔韧性。体外释放曲线证明了治疗物质的溶解度以及各种环境条件都会影响混合货物的释放速度。总的来说,所得到的双重负载双层囊泡代表了一种有前途的仿生纳米平台,可用于未来生物医学应用中的口服、静脉内和局部药物递送。

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