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Photodynamic Therapy with Blended Conducting Polymer/Fullerene Nanoparticle Photosensitizers
Published on: October 28, 2015
Mesenchymal stem cell-driven activatable photosensitizers for precision photodynamic oncotherapy
Xingshu Li1, C-Yoon Kim2, Jeong Min Shin3
1Department of Chemistry and Nano Science, Ewha Womans University, Seoul 120-750, South Korea.
Abstract:
Precise targeting with minimal side effects is of particular interest for personalized medicine, although it remains a challenge. Herein, we demonstrate precision photodynamic therapy (PDT) utilizing human mesenchymal stem cells (MSCs) as cellular vehicles to deliver a new activatable photosensitizer (PcS). In vivo real-time optical imaging tests indicated that PcS-loaded MSCs possess excellent tumor-homing properties. More importantly, dye transfer assays confirm that MSCs precisely transfer PcS into human colon cancer cells (HCT116) via the "bystander effect." Upon localized light irradiation, the growth of intraperitoneal xenograft tumors was significantly inhibited by the photodynamic effect. These findings represent a promising strategy for precise oncotherapy.
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