Investigating the Effects of Curcumin and Low-power Laser Therapy on Colorectal Cancer Cells of the Caco2 Cell Line

Abstract

Background: Colorectal cancer is the most common malignancy in humans, and it is predicted that 145,600 new cases will be diagnosed in the United States by 2019. The bioactive properties of curcuminoids and their synthetic analogs, especially their performance with an anticancer approach in different cancer cell line models, are of interest. In vivo and in vitro studies show their anticancer activity against colon cancer cell lines. Methods: In this descriptive-analytical study, colorectal cancer cells of the Caco2 cell line were cultured in DMEM medium containing 10% FBS at 37°C and 5% CO2. After calculating the IC 50, the cells were exposed to logarithmic concentrations of curcumin (curcumin) 10, 100, and 500 µg/mL for 24 hours. Finally, the effect of the toxicity of materials and low-power laser combined with melanin was measured by the MTT assay test. Results: The changes in the survival rate of colorectal cancer cells show the effect of curcumin on cell proliferation that is completely dependent on concentration and time. Calculating the survival percentage of cancer cells after treatment with different concentrations for 24, 48, and 72 hours showed that the decrease in viable cells compared to the control sample was significant (P < 0.001). Conclusions: The results showed that the use of curcumin either alone or together with a low-power laser could improve the treatment efficiency against colon cancer. The present review highlights the mechanism of synergistic effect and new delivery methods to improve curcumin's therapeutic potential.