Antitumor activities of quercetin and quercetin-5',8-disulfonate in human colon and breast cancer cell lines.
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| Abstract |
This study is designed to compare the anticancer effects of quercetin and its water-soluble sulfated derivative, quercetin-5',8-disulfonate (QS), in human colon cancer LoVo cells and breast cancer MCF-7 cells. It was found that both quercetin and QS can inhibit the growth of cancer cells in a dose-dependent manner, with the IC(50) values of 40.2 and 28.0 μM for LoVo cells and 30.8 and 19.9 μM for MCF-7 cells, respectively, suggesting QS was more effective against the cancer cells than quercetin. Moreover, flow cytometric assay revealed that quercetin and QS could mediate the cell-cycle arrest principally in the S phase after 24h of treatment with the two tumor cells. It was also found that 69.6% of LoVo cells and 90.6% of MCF-7 cells entered the early phase of apoptosis when treated with 100 μM QS for 48 h. Furthermore, we firstly found the generation of ROS is a critical mediator in QS-induced cell growth inhibition. Taken together, the novel sulfated derivative of quercetin possesses strong antitumor activity via a ROS-dependent apoptosis pathway, and has the excellent potential to be developed into an antitumor precursor compound.
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| Authors | Haisheng Zhang, Min Zhang, Linhong Yu, Yan Zhao, Nianwu He, Xingbin Yang |
| Journal | Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association (Food Chem Toxicol) Vol. 50 Issue 5 Pg. 1589-99 (May 2012) ISSN: 1873-6351 [Electronic] England |
| PMID | 22310237 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't) |
| Copyright | Copyright © 2012 Elsevier Ltd. All rights reserved. |
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