Liposome stability: multifactorial regulation and optimization strategies in in vivo delivery

As an essential carrier for drug delivery systems, the stability of liposomes directly influences the efficiency and safety of drug delivery. In the complex and challenging process of in vivo delivery, the stability of liposomes is affected by both their inherent properties and external environmental factors. This paper first introduces the in vivo journey of liposomes, encompassing blood circulation, tissue distribution, metabolism, and excretion. It then summarizes the biological factors affecting liposome stability, including immune recognition, protein-lipid interactions, enzyme-catalyzed degradation, and physiological changes. Additionally, the paper explores effective strategies to enhance liposome stability, such as optimizing lipid composition and surface modification. Finally, it discusses future research directions and existing challenges, focusing on AI-assisted liposome development, and the development of biocompatible materials. The study emphasizes the critical factors affecting liposome stability, uncovers current limitations, and highlights future potential in this field, providing a theoretical foundation and practical guidance for the design and application of liposomes.