脂质体阿霉素作为靶向递送平台:表面功能化的当前趋势。

Liposomal doxorubicin as targeted delivery platform: Current trends in surface functionalization.

机构信息

School of Pharmacy and Pharmacology, Griffith University, Gold Coast, QLD 4222, Australia; Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD 4222, Australia; Quality Use of Medicines Network, Griffith University, Gold Coast, QLD 4222, Australia.

Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia.

出版信息

Int J Pharm. 2021 Jan 25;593:120117. doi: 10.1016/j.ijpharm.2020.120117. Epub 2020 Nov 28.

Abstract

Liposomal delivery systems have significantly enhanced the efficacy and safety of chemotherapeutic agents compared to free (non-liposomal) formulations. Liposomes are vesicles made up of lipophilic bilayer and a hydrophilic core which provides perfect opportunity for their application as transport vehicle for various therapeutic and diagnostic agents. Doxorubicin is the most exploited chemotherapeutic agent for evaluation of different liposomal applications, as its physicochemical properties permit high drug entrapment and easy remote loading in pre-formulated liposomes. Pegylated liposomal doxorubicin clinically approved and, on the market, Doxil®, exemplifies the benefits offered upon the surface modification of liposome with polyethylene glycol. This unique formulation prolonged the drug residence time in the circulation and increased accumulation of doxorubicin in tumor tissue via passive targeting (enhanced permeability and retention effect). However, there is ample scope for further improvement in the efficiency of targeting tumors by coupling biological active ligands onto the liposome surface to generate intelligent drug delivery systems. Small biomolecules such as peptides, fraction of antibodies and carbohydrates have the potential to target receptors present on the surface of the malignant cells. Hence, active targeting of malignant cells using functionalised nanocarrier (liposomes encapsulated with doxorubicin) have been attempted which is reviewed in this article.

摘要

脂质体递送系统与游离(非脂质体)制剂相比,显著提高了化疗药物的疗效和安全性。脂质体由亲脂双层和亲水核组成,这为其作为各种治疗和诊断试剂的运输载体提供了绝佳的应用机会。阿霉素是评估不同脂质体应用的最常用的化疗药物,因为其物理化学性质允许高药物包封和易于在预形成的脂质体中远程加载。聚乙二醇化脂质体阿霉素已被临床批准,并且在市场上,Doxil®是通过在脂质体表面修饰聚乙二醇而提供的益处的典范。这种独特的配方延长了药物在循环中的停留时间,并通过被动靶向(增强的通透性和保留效应)增加了阿霉素在肿瘤组织中的积累。然而,通过将生物活性配体偶联到脂质体表面上,进一步提高靶向肿瘤的效率仍有很大的空间,以生成智能药物递送系统。小分子如肽、抗体片段和碳水化合物有潜力靶向恶性细胞表面的受体。因此,已经尝试使用功能化纳米载体(包裹阿霉素的脂质体)对恶性细胞进行主动靶向,本文对此进行了综述。

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