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- W836604102 abstract "Riboflavin (RF) is an essential vitamin for cell growth and development. It possesses interesting physicochemical properties and is internalized by the cells through specific transporters. The first aim of this study was to prepare amphiphile derivatives of RF (RFA) and study their auto-assembly. The second aim was to insert RFA into established drug delivery systems and test their tumour-targeting potential in vitro and in vivo. RFA were prepared by the molecule functionalization with lipid moieties in different positions. One of them, a phospholipid-like derivative (RfdiC14) was able to self-assembly in aqueous solutions into μm-sized 3D objects constituted from slightly curved multilayer lamellas. The bilayer architecture and dynamics were very different from ordinary phospholipids. In contrast, the insertion of small amount of RfdiC14 in a liposome did not influence membrane dynamics and physicochemical characteristics. RfdiC14-functionalised liposomes displayed high and specific uptake in vitro in A431, PC3 cells and HUVECs. The efficiency of RF targeting was also tested in vivo. For that purpose, liposome composition was optimized and a new RF amphiphile with a PEG spacer between RF and lipid was prepared. The tumour accumulation of the liposomes labelled with ICG was studied by photoacoustic imaging in A431 tumour model. The biodistribution of DiR labelled liposomes was accessed by combined μCT/FMT imaging in PC3 tumour model. The results show slight improvement of the tumour accumulation in A431 xenographts and the enhancement of vascular targeting in PC3 tumour model. The overall biodistribution of the RF-targeted liposomes was comparable to control." @default.
- W836604102 created "2016-06-24" @default.
- W836604102 creator A5082247950 @default.
- W836604102 date "2015-11-26" @default.
- W836604102 modified "2023-09-27" @default.
- W836604102 title "Riboflavin-based amphiphiles for tumour-targeted nanosystems" @default.
- W836604102 hasPublicationYear "2015" @default.
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