Metastatic spread is the mechanism in more than 90 percent of cancer deaths and current therapeutic options, such as systemic chemotherapy, are often ineffective. Here we provide a proof of principle for a novel two-pronged modality referred to as Synergistic Immuno Photothermal Nanotherapy (SYMPHONY) having the potential to safely eradicate both primary tumors and distant metastatic foci. Using a combination of immune-checkpoint inhibition and plasmonic gold nanostar (GNS)-mediated photothermal therapy, we were able to achieve complete eradication of primary treated tumors and distant untreated tumors in some mice implanted with the MB49 bladder cancer cells. Delayed rechallenge with MB49 cancer cells injection in mice that appeared cured by SYMPHONY did not lead to new tumor formation after 60 days observation, indicating that SYMPHONY treatment induced effective long-lasting immunity against MB49 cancer cells.
Scientific reports. 2017 Aug 17*** epublish ***
Yang Liu, Paolo Maccarini, Gregory M Palmer, Wiguins Etienne, Yulin Zhao, Chen-Ting Lee, Xiumei Ma, Brant A Inman, Tuan Vo-Dinh
Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA., Department of Radiation Oncology, Duke University Medical Center, Durham, NC, 27710, USA., Department of Surgery, Duke University Medical Center, Durham, NC, 27710, USA., Department of Surgery, Duke University Medical Center, Durham, NC, 27710, USA. ., Department of Biomedical Engineering, Duke University, Durham, NC, 27708, USA. .