Abstract
We have produced a family of novel carriers enabling water solubilization of highly lipophilic molecules. The compound carriers were synthesized by conjugating polyethylene glycol to α-tocopherol, tocotrienols, β-sitosterol or cholesterol via an alkanedioyl linker. These PEG- conjugates were amphiphilic and formed stable non-covalent complexes (nanomicelles) with a wide range of molecules including vitamins, carotenoids, ubiquinones, poly-unsaturated fatty acids and polyene macrolide antibiotics. The resulting formulations were water-soluble, non-toxic and had excellent stability. This solubilization method represents a major advance in the delivery of lipophilic molecules and could be used to reformulate drugs with near term patent expiry or those that have failed clinical trials due to low solubility. Furthermore, the technology could also be applied for delivery of active ingredients for dietary supplement, functional food, cosmetic and animal health industries.
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