Photodynamic Therapy and Its Role in Combined Modality Anticancer Treatment.
Photodynamic therapy (PDT) is a relatively new modality for anticancer treatment and although the interest has increased greatly in the recent years, it is still far from clinical routine. As PDT consists of administering a nontoxic photosensitizing chemical and subsequently illuminating the tumor with visible light, the treatment is not subject to dose-limiting toxicity, which is the case for established anticancer treatments like radiation therapy or chemotherapy. This makes PDT an attractive adjuvant therapy in a combined modality treatment regimen, as PDT provides an antitumor immune response through its ability to elicit the release of damage-associated molecular patterns and tumor antigens, thus providing an increased antitumor efficacy, potentially without increasing the risk of treatment-related toxicity. There is great interest in the elicited immune response after PDT and the potential of combining PDT with other forms of treatment to provide potent antitumor vaccines. This review summarizes recent studies investigating PDT as part of combined modality treatment, hopefully providing an accessible overview of the current knowledge that may act as a basis for new ideas or systematic evaluations of already promising results.
Department of Radiation Oncology, Montefiore Medical Center, Bronx, NY, USA Institute for Onco-Physics, Albert Einstein College of Medicine, Bronx, NY, USA.
N Patrik
NP
Brodin
Department of Radiation Oncology, Montefiore Medical Center, Bronx, NY, USA Institute for Onco-Physics, Albert Einstein College of Medicine, Bronx, NY, USA.
Chandan
C
Guha
Department of Radiation Oncology, Montefiore Medical Center, Bronx, NY, USA Institute for Onco-Physics, Albert Einstein College of Medicine, Bronx, NY, USA wolfgang.tome@einstein.yu.edu.
Wolfgang A
WA
Tomé
D000818:Animals; D016923:Cell Death / Q000276:immunology; D003131:Combined Modality Therapy; D006801:Humans; D000860:Hypoxia / Q000378:metabolism; D007155:Immunologic Factors / Q000494:pharmacology / Q000627:therapeutic use; D056747:Immunomodulation / Q000187:drug effects; D009369:Neoplasms / Q000276:immunology / Q000378:metabolism / Q000628:therapy*; D010778:Photochemotherapy / Q000379:methods
D007155:Immunologic Factors
cancer; combined-modality treatment; immunogenicity; photodynamic therapy