期刊
PHARMACEUTICALS
卷 13, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/ph13070137
关键词
TLD1433; optical surface applicator; intra-operative photodynamic therapy; PDT; light simulation
资金
- National Cancer Institute at the National Institutes of Health (NCI/NIH) [R01CA193610]
- Roswell Park Alliance Foundation
- Roswell Park Comprehensive Cancer Center
- NCI [P30CA016056]
Intra-operative photodynamic therapy (IO-PDT) in combination with surgery for the treatment of non-small cell lung cancer and malignant pleural mesothelioma has shown promise in improving overall survival in patients. Here, we developed a PDT platform consisting of a ruthenium-based photosensitizer (TLD1433) activated by an optical surface applicator (OSA) for the management of residual disease. Human lung adenocarcinoma (A549) cell viability was assessed after treatment with TLD1433-mediated PDT illuminated with either 532- or 630-nm light with a micro-lens laser fiber. This TLD1433-mediated PDT induced an EC50 of 1.98 mu M (J/cm(2)) and 4807 mu M (J/cm(2)) for green and red light, respectively. Cells were then treated with 10 mu M TLD1433 in a 96-well plate with the OSA using two 2-cm radial diffusers, each transmitted 532 nm light at 50 mW/cm for 278 s. Monte Carlo simulations of the surface light propagation from the OSA computed light fluence (J/cm(2)) and irradiance (mW/cm(2)) distribution. In regions where 100% loss in cell viability was measured, the simulations suggest that >20 J/cm(2) of 532 nm was delivered. Our studies indicate that TLD1433-mediated PDT with the OSA and light simulations have the potential to become a platform for treatment planning for IO-PDT.
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