Peer-Reviewed Journal Details
Mandatory Fields
Panos Lehouritis, Joanne Cummins, Michael Stanton, Carola T. Murphy, Florence O. McCarthy, Gregor Reid, Camilla Urbaniak, William L. Byrne & Mark Tangney
2015
August
Scientific Reports
Local bacteria affect the efficacy of chemotherapeutic drugs
Published
Optional Fields
5
14554
In this study, the potential effects of bacteria on the efficacy of frequently used chemotherapies was examined. Bacteria and cancer cell lines were examined in vitro and in vivo for changes in the efficacy of cancer cell killing mediated by chemotherapeutic agents. Of 30 drugs examined in vitro, the efficacy of 10 was found to be significantly inhibited by certain bacteria, while the same bacteria improved the efficacy of six others. HPLC and mass spectrometry analyses of sample drugs (gemcitabine, fludarabine, cladribine, CB1954) demonstrated modification of drug chemical structure. The chemoresistance or increased cytotoxicity observed in vitro with sample drugs (gemcitabine and CB1954) was replicated in in vivo murine subcutaneous tumour models. These findings suggest that bacterial presence in the body due to systemic or local infection may influence tumour responses or off-target toxicity during chemotherapy
Nature
10.1038/srep14554
Grant Details