Abstract

The efficacy and safety are two challenging factors before trusting the lipid-based Nanosystems (LBNs) for diagnostic and therapeutic purposes. The aim of this paper is to evaluate the accessible in-vitro and in-vivo studies on the contribution of major physicochemical factors of LBNs for the effective and safe delivery of drugs and anticancer agents into the target site. These factors included lipid charge, particle size and size distribution, lipid composition and components, surface hydrophilicity and hydrophobicity, and surface coating. Here, reliable databases were searched for full-text, accessible and original articles to conduct this review. We included relevant studies since 1992, which were conducted on the development of LBNs for therapeutic and diagnostic purposes. Many studies have shown that using polyethylene glycol modification reduces the undesirable side effects and controls the efficacy and toxicity for in-vitro and in-vivo delivery of drugs or anticancer agents. Also, optimization of the size and composition of lipid nanoparticles minimizes the toxicity of the anticancer agents associated with a carrier. In addition, the presence of positively charged lipids in LBNs improves the efficacy of encapsulated drugs in spite of low blood circulation efficiency and high toxicity effects. The identification of important factors involved in the delivery of LBNs as potential drug carriers is crucial and contributes to the proper design of these interesting carriers for both therapeutic and diagnostic purposes.

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