期刊
ADVANCED FUNCTIONAL MATERIALS
卷 23, 期 48, 页码 6059-6067出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201301555
关键词
near-infrared absorption; conjugated polymers; - stacking; drug delivery; photothermality; cancer therapies
类别
资金
- National Natural Science Foundation of China [51222203, 51002100, 51132006]
- National 973 Program of China [2011CB911002, 2012CB932601]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Post-doctoral research program of Jiangsu Province [1202044C]
Poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) nanoparticles, after being coated with polyethylene glycol (PEG), are used as a drug carrier to load various types of aromatic therapeutic molecules, including chemotherapy drugs doxorubicin (DOX) and SN38, as well as a photodynamic agent chlorin e6 (Ce6), through - stacking and hydrophobic interaction. Interesting functionalities of PEDOT:PSS-PEG as an unique versatile drug delivery platform are discovered. Firstly, for water-insoluble drugs such as SN38, the loading on PEDOT:PSS-PEG dramatically enhances its water solubility, while maintaining its cytotoxicity to cancer cells. Secondly, the delivery of Ce6 by PEDOT:PSS-PEG is able to remarkably accelerate the cellular uptake of Ce6 molecules, and thus offers improved photodynamic therapeutic efficacy. Using DOX-loaded PEDOT:PSS-PEG as the model system, it is demonstrated that the photothermal effect of PEDOT:PSS-PEG can be utilized to promote the delivery of this chemotherapeutic agent, achieving a combined photothermal- and chemotherapy with an obvious synergistic cancer killing effect. Moreover, it is also shown that multiple types of therapeutic agents could be simultaneously loaded on PEDOT:PSS-PEG nanoparticles and delivered into cancer cells. This work highlights the great potential of NIR-absorbing polymeric nanoparticles as multifunctional drug carriers for potential cancer combination therapy with high efficacy.
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