Curcumin, A Multi-Functional Chemopreventive Agent, Blocks Growth of Colon Cancer Cells by Targeting β-Catenin-Mediated Transactivation and Cell–Cell Adhesion Pathways

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Abstract
Colorectal cancer, the second most frequent diagnosed cancer in the US, causes significant morbidity and mortality in humans. Over the past several years, the molecular and biochemical pathways that influence the development of colon cancer have been extensively characterized. Since the development of colon cancer involves multi-step events, the available drug therapies for colorectal cancer are largely ineffective. The radiotherapy, photodynamic therapy, and chemotherapy are associated with severe side effects and offer no firm expectation for a cure. Thus, there is a constant need for the investigation of other potentially useful options. One of the widely sought approaches is cancer chemoprevention that uses natural agents to reverse or inhibit the malignant transformation of colon cancer cells and to prevent invasion and metastasis. Curcumin (diferuloylmethane), a natural plant product, possesses such chemopreventive activity that targets multiple signalling pathways in the prevention of colon cancer development.