The Effect of Quercetin On Doxorubicin Cytotoxicity in Human Breast Cancer Cells

ISSN: 1875-5992 (Online)
ISSN: 1871-5206 (Print)


Volume 14, 10 Issues, 2014


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Anti-Cancer Agents in Medicinal Chemistry

Formerly: Current Medicinal Chemistry - Anti-Cancer Agents

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  • 26th of 59 in Chemistry, Medicinal
  • 99th of 197 in Oncology

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Editor-in-Chief:
Michelle Prudhomme
Universite Blaise Pascal - C.N.R.S
Aubiere Cedex
France


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The Effect of Quercetin On Doxorubicin Cytotoxicity in Human Breast Cancer Cells

Author(s): Shi zheng Li, Kun Li, Jun-hua Zhang and Zhe Dong


Abstract

Multidrug resistance has became the major obstacle to cancer chemotherapy. Recent studies suggest that quercetin could enhance the response of tumors to chemotherapy although the mechanism by which quercetin enhances the sensitivity of tumor cells to chemical drugs remains elusive. Therefore, in this study, we examined the effects of quercetin on doxorubicin cytotoxicity in human breast cancer cells and investigated the underlying mechanisms. MCF-7 and MCF-7/ dox cells were exposed to doxorubicin, quercetin, or combination of both agents for 36 hours. Cell proliferation, cell invasion, intracellular doxorubicin concentration and expression of hypoxia-inducible factor-1 alpha (HIF-1?) and P-glycoprotein (P-gp) were then assessed. Quercetin had little effect on cell proliferation at concentrations less than 0.7 µM. Compared to treatment with doxorubicin alone, combined treatment with doxorubicin and quercetin (0.7 µM) significantly inhibited cell proliferation and invasion and suppressed the expression of HIF-1? and P-gp. Quercetin (0.7 µM) increased the intracellular doxorubicin concentration and enhanced doxorubicin cytotoxicity as 1.49-fold in MCF-7 cells and 1.98-fold in MCF-7/dox cells. These data suggest that quercetin can increase the chemosensitivity of breast cancer cells to doxorubicin.


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Article Details

Volume: 13
First Page: 1
Last Page: 1
Page Count: 1
DOI: 10.2174/1871520611313030002
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