基于甘油的聚合物改善细胞吸收脂质体的细胞吸收
Sabrina Roussel1,2, Lucia Carrera Fragoso1,2, Philippe Grenier1
1Faculty of Pharmacy, Université Laval, 1050 ave de la Médecine, Québec G1V 0A6, Canada.
Biomacromolecules
|April 21, 2025
概括
一种新型的聚合物通过快速内啡林介导内细胞分裂 (FEME) 增强免疫细胞对纳米药物的吸收. 这种表面修饰改进了纳米药物输送,并准了新的细胞进入途径.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 细胞生物学 细胞生物学
背景情况:
- 纳米药物需要细胞内部化来传递有效载荷,使表面特性对细胞相互作用和药理学调制至关重要.
- 目前的纳米医学策略通常依赖于被动细胞吸收机制.
研究的目的:
- 开发一种聚合物,增强免疫细胞对纳米医学的内部化.
- 为了研究由新型聚合物介导的细胞吸收途径.
主要方法:
- 通过可逆添加-碎片化链-转移 (RAFT) 聚合,合成化多单糖醇烯酸盐 (PMGA).
- 用PMGA装饰脂质体,并评估它们在免疫细胞中的内部化效率.
- 利用途径抑制剂来阐明PMGA介导的细胞进入机制.
主要成果:
- 与非涂层脂质体相比,PMGA装饰的脂质体在免疫细胞中表现出明显更高的内部化率.
- 发现PMGA促进细胞吸收,主要是通过快速内啡林介导的内细胞分裂 (FEME).
- 对照脂质体主要通过克拉介导的内细胞分裂内化.
结论:
- 开发的PMGA聚合物有效地增强了免疫细胞中纳米医药的内部化.
- 通过向FEME途径,PMGA代表了提高纳米药物疗效的有希望的策略.
- 这项研究确定了纳米医学表面修饰的新型内部化途径.
相关概念视频
Bioavailability Enhancement: Drug Permeability Enhancement
After oral administration, poor permeability often limits the rate at which drugs are absorbed through the intestinal epithelium. Enhancing drug permeability is crucial for effective therapy, and several strategies have been developed to overcome this challenge.One effective strategy involves the use of lipid-based formulations. These formulations enhance dissolution and solubility, targeting physiological mechanisms to increase drug absorption. This includes stimulating bile salt secretion,...
Bioavailability Enhancement: Drug Stability Enhancement and GI Retention
Improving a drug's stability in the gastrointestinal (GI) tract is paramount for enhancing its bioavailability and therapeutic effectiveness. Various strategies are employed to protect the drug from the harsh gastric milieu and to ensure its release and absorption at the desired site within the GI tract.Polymer coatings are one such method used to shield drugs from the stomach's acidic environment. By preventing premature drug release, these coatings improve the bioavailability of unstable...
Site-Targeted Drug Delivery Systems: Polymeric Carriers
Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...


