Lee KY, Chiang YT, Hsu NY, Yang CY, Lo CL, Ku CA. Vitamin E containing polymer micelles for reducing normal cell cytotoxicity and enhancing chemotherapy efficacy.
Acta Biomater 2015;
24:286-96. [PMID:
26087112 DOI:
10.1016/j.actbio.2015.06.014]
[Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 05/13/2015] [Accepted: 06/10/2015] [Indexed: 02/03/2023]
Abstract
An α-tocopheryl succinate (α-TOS) containing diblock copolymer micellar system was used to deliver doxorubicin (Dox), an anticancer drug, for HCT116 colon cancer therapy. The α-TOS containing diblock copolymers were synthesized by conjugation of α-TOS molecules and a mPEG-b-PHEMA hydrophilic diblock copolymer by ester bonds. The Dox-loaded polymeric micelles were then obtained by solvent exchange process. In acidic surroundings such as endosomes or secondary lysosomes, the structures of the Dox-loaded polymeric micelles deformed and released the drug loads. Additionally, Dox-loaded polymeric micelles enhanced the cytotoxicity of Dox and α-TOS to cancer cells in vitro. Dox-loaded polymeric micelles also showed an exceptional tumor inhibiting effect in vivo. This study indicates that the α-TOS containing polymeric micelle system can be used as a drug carrier for cancer therapy.
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