Selective targeting of visceral adiposity by polycation nanomedicine
Nature Nanotechnology(2022)
摘要
Obesity is a pandemic health problem with poor solutions, especially for targeted treatment. Here we develop a polycation-based nanomedicine polyamidoamine generation 3 (P-G3) that—when delivered intraperitoneally—selectively targets visceral fat due to its high charge density. Moreover, P-G3 treatment of obese mice inhibits visceral adiposity, increases energy expenditure, prevents obesity and alleviates the associated metabolic dysfunctions. In vitro adipogenesis models and single-cell RNA sequencing revealed that P-G3 uncouples adipocyte lipid synthesis and storage from adipocyte development to create adipocytes that possess normal functions but are deficient in hypertrophic growth, at least through synergistically modulating nutrient-sensing signalling pathways. The visceral fat distribution of P-G3 is enhanced by modifying P-G3 with cholesterol to form lipophilic nanoparticles, which is effective in treating obesity. Our study highlights a strategy to target visceral adiposity and suggests that cationic nanomaterials could be exploited for treating metabolic diseases.
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关键词
Drug delivery,Nanoparticles,Materials Science,general,Nanotechnology,Nanotechnology and Microengineering
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