Chlorin e6 Derivative Radachlorin Mainly Accumulates in Mitochondria,Lysosome and Endoplasmic Reticulum and Shows High Affinity toward Tumors in Nude Mice in Photodynamic Therapy |
| |
| Authors: | Raktim Biswas Jeong Hwan Moon Jin‐Chul Ahn |
| |
| Institution: | 1. Beckman Laser Institute Korea, Dankook University, , Cheonan, South Korea;2. Department of Otolaryngology‐Head and Neck Surgery, College of Medicine, Dankook University, , Cheonan, South Korea;3. Department of Biomedical Science, Dankook University, , Cheonan, South Korea;4. Biomedical Translational Research Institute, , Cheonan, South Korea |
| |
| Abstract: | The efficacy of photodynamic therapy (PDT) depends upon the amount of photosensitizer accumulated in the malignant tissues. Radachlorin is a popular photosensitizer used in photodynamic therapy to treat various types of cancer. In this study, we have studied the main organelles responsible for the accumulation of radachlorin in human anaplastic thyroid cancer in vitro and in vivo. The optimal time window for uptake and clearance of radachlorin also was studied. Confocal microscopic images confirmed that the radachlorin is mainly acquired by mitochondria and partially by lysosome and endoplasmic reticulum. Studies also showed that the maximum amount of radachlorin was accumulated within 3–6 h after the treatment. Radachlorin also showed a higher affinity toward malignant tumors compared to the other organs in mice xenograft model. Uptake of radachlorin reached an optimum amount within 6 h and most of the radachlorins were also cleared from the body in next 48 h. Therefore, detailed information regarding exact accumulation sites and a time window in which maximum amount of drug is accumulated and cleared were obtained by this study. Hence, not only the efficacy of the treatment can be increased but the phototoxicity after the treatment also can be controlled. |
| |
| Keywords: | |
|
|
