Mesenchymal stem cell-driven activatable photosensitizers for precision photodynamic oncotherapy. (December 2018)

• Record Type: Journal Article
• Authors: Li, Xingshu; Kim, C-yoon; Shin, Jeong Min; Lee, Dayoung; Kim, Gyoungmi; Chung, Hyung-Min; Hong, Ki-Sung; Yoon, Juyoung
• Is Part Of: Biomaterials. Volume 187(2018)
• Page Start: 18
• Page End: 26
• Publication Date: 2018-12
• Subjects: Photodynamic therapy -- Mesenchymal stem cells -- Tumor targeting -- Activatable photosensitizer -- Precision medicine; Biomedical materials -- Periodicals; Biocompatible Materials -- Periodicals; Biomatériaux -- Périodiques; 610.28
• DOI: 10.1016/j.biomaterials.2018.09.041
• Languages: English
• ISSNs: 0142-9612

Abstract

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. Graphical abstract: