Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 8, Issue 10, Pages 2370-2376Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201300039
Keywords
aptamers; cancer; fullerenes; nanoparticles; photodynamic therapy
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Funding
- 973 Program [2011CB302100, 2011CB911001]
- National Natural Science Foundation of China [21121063, 31170963, 21127901]
- Ministry of Science and Technology support program [2011BAK15B04]
- NSAF [11076027]
- China Postdoctoral Science Foundation [20110490603]
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Fullerene-based photosensitizers exhibit great potential in photodynamic therapy (PDT). Based on the high photodynamic efficacy of trimalonic acid-modified C-70 fullerene (TF70), we constructed an aptamer-guided TF70 photosensitizer and investigated its photodynamic effect. Conjugation of the novel aptamer (named R13) could effectively enhance the PDT efficiency of TF70 against A549 lung cancer cells in the presence of serum. The lysosomal location of the TF70-R13 conjugate inside cells facilitates the production of intracellular reactive oxygen species (ROS), which can efficiently kill cells, under light irradiation. The enhanced photodynamic efficiency, along with its good biocompatibility in the dark, makes TF70-R13 a highly promising photosensitizer for tumor-specific PDT.
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