Synergistic anticancer effects of curcumin and 3',4'-didemethylnobiletin in combination on colon cancer cells

Journal of Food Science
Christina DiMarco-CrookHang Xiao

Abstract

Chemoprevention strategies employing the use of multiple dietary bioactive components and their metabolites in combination offer advantages due to their low toxicity and potential synergistic interactions. Herein, for the first time, we studied the combination of curcumin and 3',4'-didemethylnobiletin (DDMN), a primary metabolite of nobiletin, to determine their combinatory effects in inhibiting growth of human colon cancer cells. Isobologram analysis revealed a synergistic interaction between curcumin and DDMN in the inhibition of cell growth of HCT116 colon cancer cells. The combination treatment induced significant G2 -M cell-cycle arrest and extensive apoptosis, which greatly exceeded the effects of individual treatments with curcumin or DDMN. Proteins associated with these heightened anticarcinogenic effects were p53, p21, HO-1, c-poly(ADP-ribose) polymerase, Cdc2, and Cdc25c; each of the proteins was confirmed to be substantially impacted by the combination treatment, more than by individual treatments alone. Interestingly, an increase in the stability of curcumin was also observed with the presence of DDMN in cell culture medium, which could offer an explanation in part for the synergistic interaction between curcumin an...Continue Reading

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Citations

Oct 1, 2020·Biomolecules·Ebrahim Rahmani MoghadamAlan Prem Kumar
Dec 6, 2020·Antioxidants·Jose D Puentes-PardoJosefa León
Oct 24, 2020·ACS Combinatorial Science·Milad AshrafizadehPooyan Makvandi
Nov 20, 2020·Food & Function·M Maria LeenaC Anandharamakrishnan

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