MPS blockade with liposomes controls pharmacokinetics of nanoparticles in a size-dependent manner
Pharmacokinetics of nanomedicines can be improved by a temporal blockade of mononuclear phagocyte system (MPS) through the interaction with other biocompatible nanoparticles. Liposomes are excellent candidates as blocking agents, but the efficiency of the MPS blockade can greatly depend on the liposome properties. Here, we investigated the dependence of the efficiency of the induced MPS blockade in vitro and in vivo on the size of blocking liposomes in the 100-500 nm range. Saturation of RAW 264.7 macrophage uptake was observed for phosphatidylcholine/cholesterol liposomes larger than 200 nm in vitro. In mice, liposomes of all sizes exhibited a blocking effect on liver macrophages, prolonging the circulation of subsequently administrated magnetic nanoparticles in the bloodstream, reducing their liver uptake, and increasing accumulation in the spleen and lungs. Importantly, these effects became more pronounced with the increase of liposome size. Optimization of the size of the blocking liposomes holds the potential to enhance drug delivery and improve cancer therapy.
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Данные статьи проверены модераторами 2024-10-07
Список научных проектов, где отмечена публикация
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