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  • Title: Polymeric micelles with small lipophilic moieties for drug delivery.
    Author: Li D, Liang Y, Lai Y, Wang G, He B, Gu Z.
    Journal: Colloids Surf B Biointerfaces; 2014 Apr 01; 116():627-32. PubMed ID: 24268560.
    Abstract:
    The aim of this study was to develop a new polymeric micelle delivery system for antitumor drugs. An amphiphile of methoxypoly(ethylene glycol)-histidine-di(cinnamic acid) (PEGHC) with a small lipophilic moiety instead of a hydrophobic biodegradable polymer chain was synthesized and characterized. The PEGHC self-assembled into micelles. The critical micelle concentration (CMC) was tested. 9-Nitro-20(s)-camptothecin (9-NC) was used as a model drug for encapsulation. The size and morphology of both blank and 9-NC loaded micelles were characterized by dynamic light scattering (DLS) and transmission electron microscopy (TEM). The release profile of 9-NC loaded micelles was studied. HepG2 liver cancer cells were incubated with the drug-loaded micelles to investigate the in vitro anticancer efficiency. The results showed that the 9-NC loaded micelles exhibited high accumulated release rate (>85%) and efficient in vitro anticancer activity.
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