Tcibulnikova, Anna V.Degterev, Igor A.Bryukhanov, Valery V.Roberto, Mantuanelly M. [UNESP]Campos Pereira, F. D. [UNESP]Marin-Morales, M. A. [UNESP]Slezhkin, Vasily A.Samusev, Ilya G.2018-12-112018-12-112017-01-01Proceedings of SPIE - The International Society for Optical Engineering, v. 10456.1996-756X0277-786Xhttp://hdl.handle.net/11449/170565We have been searching for new photosensitizers (PS) for photodynamic therapy (PDT) of cancer based on extracts from Amazonian plants since 2009. In this paper, we demonstrate that, under certain conditions, the extract from fruits of the Amazonian palm Euterpe oleraceae (popular name Açaí) can serve as a PS for PDT treatment of murine breast cancer cells (4T1 cell line). We have been first to show directly that the photodynamic effect of plant PS is due to singlet oxygen.engamazon Palm Treecancer cellslaserMTT methodnanoemulsionPDTplant extractPSsinglet oxygenUV-Vis and fluorescent spectraTrabalho apresentado em evento10.1117/12.2283317Acesso aberto2-s2.0-850407209662-s2.0-85040720966.pdf