期刊
MOLECULAR PHARMACEUTICS
卷 5, 期 4, 页码 505-515出版社
AMER CHEMICAL SOC
DOI: 10.1021/mp800051m
关键词
biodistribution; circulation half-life; polymeric nanoparticles
资金
- NCI NIH HHS [CA119349, U54 CA119349] Funding Source: Medline
- NIBIB NIH HHS [K08 EB003647, EB003647] Funding Source: Medline
Nanoparticle (NP) drug delivery systems (5-250 nm) have the potential to improve current disease therapies because of their ability to overcome multiple biological barriers and releasing a therapeutic load in the optimal dosage range. Rapid clearance of circulating nanoparticles during systemic delivery is a critical issue for these systems and has made it necessary to understand the factors affecting particle biodistribution and blood circulation half-life. In this review, we discuss the factors which can influence nanoparticle blood residence time and organ specific accumulation. These factors include interactions with biological barriers and tunable nanoparticle parameters, such as composition, size, core properties, surface modifications (pegylation and surface charge), and finally, targeting ligand functionalization. All these factors have been shown to substantially affect the biodistribution and blood circulation half-life of circulating nanoparticles by reducing the level of nonspecific uptake, delaying opsonization, and increasing the extent of tissue specific accumulation.
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