Photodynamic Therapy Potentiates the Effects of Curcumin on Pediatric Epithelial Liver Tumor Cells.
Anticancer Res. 2016 Jul ;36(7):3363-72. PMID: 27354595
BACKGROUND/AIM: Curcumin (CUM) is a promising agent in complementary oncology. The present study analyzed the photoactive properties of curcumin on pediatric epithelial liver tumor cell lines.
MATERIALS AND METHODS: Hepatoblastoma cell lines (HuH6, HepT1) and hepatocellular carcinoma cell lines (HepG2, HC-AFW1) were treated with curcumin and exposed to blue light (phototherapy, 480 nm, 300 W). Cell viability (MTT tests), cellular oxidative stress (production of reactive oxygen species (ROS)) and cellular uptake/degradation of curcumin were analyzed.
RESULTS: Significant loss of viability resulted from 24-48 h incubation with curcumin. With photodynamic therapy (PDT), even short time incubation (1 h) with curcumin resulted in significantly lower half maximal inhibitory concentration (IC50) (p<0.001, two-way ANOVA). Significant ROS production was observed with PDT and curcumin.
CONCLUSION: Phototherapy strongly enhances the anticancer properties of curcumin in pediatric solid liver tumors in vitro.