title: A sweet polydopamine nanoplatform for synergistic combination of targeted chemo-photothermal therapy.
abstract: Inspired by sweet or sugar-coated bullets that are used for medications in clinics and the structure and function of biological melanin, a novel kind of sweet polydopamine nanoparticles and their anticancer drug doxorubicin loaded counterparts are prepared, which integrate an active targeting function, photothermal therapy, and chemotherapy into one polymeric nanocarrier. The oxidative polymerization of lactosylated dopamine and/or with dopamine are performed under mild conditions and the resulting sweet nanoparticles are thoroughly characterized. When exposed to an 808 nm continuous-wave diode laser, the magnitude of temperature elevation not only increases with the concentration of nanoparticles, but can also be tuned by the laser power density. The nanoparticles possess strong near infrared light absorption, high photothermal conversion efficiency, and good photostability. The nanoparticles present tunable binding with RCA120 lectin and a targeting effect to HepG2 cells, confirmed by dynamic light scattering, turbidity analysis, MTT assay, and flow cytometry. Importantly, the sweet nanoparticles give the lowest IC50 value of 11.67 μg mL(-1) for chemo-photothermal therapy compared with 43.19 μg mL(-1) for single chemotherapy and 67.38 μg mL(-1) for photothermal therapy alone, demonstrating a good synergistic effect for the combination therapy.
authors.affiliation: Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Yanqin
authors.initials: Y
authors.lastname: Gao
authors.affiliation: Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Xingjie
authors.initials: X
authors.lastname: Wu
authors.affiliation: Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Linzhu
authors.initials: L
authors.lastname: Zhou
authors.affiliation: Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Su
authors.affiliation: Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
authors.forename: Chang-Ming
authors.initials: CM
authors.lastname: Dong
mesh_terms: D000903:Antibiotics, Antineoplastic / Q000737:chemistry / Q000494:pharmacology*; D002470:Cell Survival / Q000187:drug effects; D003131:Combined Modality Therapy; D004317:Doxorubicin / Q000737:chemistry / Q000494:pharmacology*; D004337:Drug Carriers; D004339:Drug Compounding; D006367:HeLa Cells; D056945:Hep G2 Cells; D006801:Humans; D007211:Indoles / Q000138:chemical synthesis*; D007785:Lactose / Q000737:chemistry; D008027:Light; D028022:Low-Level Light Therapy; D008543:Melanins / Q000737:chemistry; D011108:Polymers / Q000138:chemical synthesis*
chemical_list: D000903:Antibiotics, Antineoplastic; D004337:Drug Carriers; D007211:Indoles; D008543:Melanins; D011108:Polymers; C568283:polydopamine; D004317:Doxorubicin; D007785:Lactose
keywords: chemo-photothermal therapy; nanomedicines; polydopamine; synergistic effect; targeting effect