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測量應(yīng)用案例-20210504

來源:美國布魯克海文儀器公司   2021年05月20日 16:33  
 

文獻名:Co-encapsulation of sodium diethyldithiocarbamate (DETC) and zinc phthalocyanine (ZnPc) in liposomes promotes increases phototoxic activity against (MDA-MB 231) human breast cancer cells

 

 

作者Paulo Emilio Feuserab; Arthur Poester Cordeiroa; Gustavode Bem Silveirab; Maria Eduarda Anastácio Borges Corrêab; Paulo CesarLock Silveirab; Claudia Sayera; Pedro Henrique Hermesde Araújoa; Ricardo Andrez Machado-de-Ávilab; Alexandre Gonçalves Dal Bóc

a  Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Brazil

b  Postgraduate Program in Health Science, University of the Extreme South Santa Catarina, Brazil

c  Postgraduate Program in Materials Science and Engineering, University of the Extreme South Santa Catarina, Brazil

 

 

 

摘要:There has been considerable interest in the development of novel photosensitisers for photodynamic therapy (PDT). The use of liposomes as drug delivery systems containing simultaneously two or more drugs is an attractive idea to create a new platform for PDT application. Therefore, the aim of this study was to evaluate the synergistic effect of diethyldithiocarbamate (DETC) and zinc phthalocyanine (PDT) co-encapsulated in liposomes. The reverse-phase evaporation method resulted in the successful encapsulation of DETC and ZnPc in liposomes, with encapsulation efficiencies above 85 %, mean size of 308 nm, and zeta potential of ― 36 mV. The co-encapsulation decreased the cytotoxic effects in mouse embryo fibroblast (NIH3T3) cells and inhibited damage to human erythrocytes compared to free DETC + ZnPc. In addition, both the free drugs and co-encapsulated ones promoted more pronounced phototoxic effects on human breast cancer cells (MDA-MB231) compared to treatment with ZnPc alone. This synergistic effect was determined by DETC-induced decreases in the antioxidant enzyme activity of superoxide dismutase (SOD) and glutathione (GSH).

 

 

關(guān)鍵詞:Diethyldithiocarbamate; Synergistic effect; Liposomes; Photodynamic therapy; Phototoxicity; Zinc phthalocyanine

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