Title : In vitro and in vivo characterizations of tetrandrine on the reversal of P-glycoprotein-mediated drug resistance to paclitaxel.

Pub. Date : 2005 May-Jun

PMID : 16158930






4 Functional Relationships(s)
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1 In this study, we characterized one of these compounds, termed tetrandrine, and evaluated its reversal activity on P-gp-mediated drug resistance to paclitaxel in vitro and in vivo. tetrandrine phosphoglycolate phosphatase Homo sapiens
2 MATERIALS AND METHODS: Using the human MDR tumor cell line KBv200 and its drug sensitive parental cell line, the reversal activity of tetrandrine on P-gp-mediated resistance to paclitaxel and docetaxel were determined by MTT and other in vitro drug evaluation assays. tetrandrine phosphoglycolate phosphatase Homo sapiens
3 In addition, accumulation and efflux studies with [3H]-paclitaxel indicated that tetrandrine increases the intracellular accumulation of [3H]-paclitaxel in MDR cells through inhibition of P-gp-mediated drug efflux. tetrandrine phosphoglycolate phosphatase Homo sapiens
4 CONCLUSION: The present in vitro and in vivo studies demonstrated that tetrandrine possesses potent and specific activity in reversing P-gp-mediated drug resistance. tetrandrine phosphoglycolate phosphatase Homo sapiens