title: [D-mannose-conjugated polymeric micelles for targeted drug delivery].
abstract: Polymeric micelles have exhibited attractive properties as drug carriers, such as high stability in vivo and good biocompatibility, and been successfully used to dissolve various drugs of poor aqueous solubilities. In this study, we developed a new type of polymeric micelles with mannose-mediated targeting and pH-responsive drug release properties for anticancer drug delivery. The polymeric micelles were prepared from an amphiphilic polymer, poly (glycidyl methacrylate)-g-mannose (PGMA-Mannose). An anticancer drug, doxorubicin (DOX), was encapsulated into the micelles during the micellization, and could be released rapidly under acidic condition. The specificity of cellular uptake of the micelles by two different cell lines was studied using confocal laser scanning microscopy and the MTT assay. DOX-loaded micelles were efficiently trapped by mannose-receptor-overexpressing cancer cells MDA-MB-231, whereas mannose- receptor-poor cells HEK293 showed much lower endocytosis towards the micelles under the same conditions. Thus, DOX-loaded micelles displayed higher cytotoxicity to MDA-MB-231 cancer cells as compared with free DOX. The present study demonstrates that PGMA-Mannose micelles are a promising targeted drug delivery system for cancer therapy.
authors.forename: Shuting
authors.initials: S
authors.lastname: Wang
authors.forename: Quan
authors.initials: Q
authors.lastname: Zhang
authors.forename: Zhou
authors.initials: Z
authors.lastname: Ye
authors.forename: Yongquan
authors.initials: Y
authors.lastname: Xiong
authors.forename: Chenyu
authors.initials: C
authors.lastname: Cui
authors.forename: Jian
authors.initials: J
authors.lastname: Yin
mesh_terms: D045744:Cell Line, Tumor; D004317:Doxorubicin / Q000494:pharmacology; D016503:Drug Delivery Systems; D057809:HEK293 Cells; D006801:Humans; D037181:Lectins, C-Type / Q000378:metabolism; D008358:Mannose / Q000737:chemistry*; D000090323:Mannose Receptor; D037241:Mannose-Binding Lectins / Q000378:metabolism; D008823:Micelles; D011956:Receptors, Cell Surface / Q000378:metabolism
chemical_list: D037181:Lectins, C-Type; D000090323:Mannose Receptor; D037241:Mannose-Binding Lectins; D008823:Micelles; D011956:Receptors, Cell Surface; D004317:Doxorubicin; D008358:Mannose