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Cinchonine is a natural compound present in Cinchona bark. It exerts multidrug resistance reversal activity and synergistic apoptotic effect with paclitaxel in uterine sarcoma cells. Whether cinchonine is effective against human liver cancer, however, remains elusive. A total of five liver cancer
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We have previously suggested that quinine and cinchonine could be good candidates for the clinical circumvention of multidrug resistance (MDR) in haematological malignancies because of their tolerance and their retained efficacy in serum. We have also shown that cinchonine was more efficient than
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Overexpression of P-glycoprotein (P-gp) in cancer cells reduces intracellular accumulation of various anticancer drugs including anthracyclines and vinca alkaloids. This multidrug resistance (MDR) phenotype can be reversed in vitro by a number of non-cytotoxic drugs. We have identified the quinine's
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Multidrug resistance (MDR) is one of important issues to cause the chemotherapy failure against cancers including gynecological malignancies. Despite some MDR reversal evidences of natural compounds including quinidine and cinchonine, there are no reports on MDR reversal activity of hydrocinchonine
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Circumvention of multidrug resistance is a new field of investigation in cancer chemotherapy, and safe and potent multidrug resistance inhibitors are needed for clinical use. We investigated several analogues of quinine for their ability to increase anthracycline uptake in resistant cancer cells.
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Cinchonine (CN) has been known to exert antimalarial, antiplatelet, and antiobesity effects. It was also recently reported to inhibit transforming growth factor β-activated kinase 1 (TAK1) and protein kinase B (AKT) through binding to tumor necrosis factor receptor-associated factor 6 (TRAF6).
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An ATP-dependent efflux pump is found in the plasma membrane of certain multidrug resistant (MDR) cancer cells. Drug resistance is due to decreased intracellular drug levels that have been reduced to subcytotoxic concentrations. Inhibition of the MDR efflux pump with a reversal agent may 'trap' the
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Multidrug resistance (MDR) is a major obstacle to the effective treatment of cancer. One of the underlying mechanisms of MDR is cellular overproduction of P-glycoprotein (P-gp) which acts as an efflux pump for various anticancer drugs. P-gp is encoded by the MDR1 gene and its overexpression in
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