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Hepatocellular carcinoma (HCC) is one of the leading causes of global cancer death. The phosphatidylinositol-3-kinase/ protein kinase B/ mammalian target of rapamycin (PI3K/AKT/mTOR) signalling pathway is one of the highly regulated signalling transduction pathways in cells promoting cell survival, growth, motility, metabolism, and proliferation. This signalling axis is aberrantly activated in a wide variety of tumours, such as breast, cervical, colon, gastric, liver, lung, ovarian, and prostate. The PI3K/AKT/mTOR (PAM) signalling axis is the most pivotal and overactivated signalling pathway in ⁓50% of HCC cases. Phytochemicals, such as flavonoids, have been identified and isolated to date and are reported to have anticancer, cardioprotective, anti-inflammatory, anti-oxidant, and hepatoprotective properties.
Studies discussed in this review were obtained from PubMed, Scopus, and Google Scholar databases using combinations of the terms related to HCC and flavonoids.
This review summarizes the mechanism of action of flavonoids to get a better understanding of their role in HCC. It also discusses mechanistic approaches for targeting the PAM pathway using various flavonoid moieties.
The scientific literature describes the pharmacological aspect of various flavonoids in targeting the “PAM axis” to manage hepatocarcinogenesis. These flavonoids chemosensitize the target, thus reducing the chance of resistance towards the chemotherapy, and also act as direct antioxidants, indirect antioxidants, or pro-oxidants.
Further studies are required to investigate the pharmacokinetic profile of flavonoids as they hold immense potential to inhibit the PAM pathway in the management of hepatocellular carcinoma.
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