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KMID : 0613820070170081115
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Journal of Life Science
2007 Volume.17 No. 8 p.1115 ~ p.1120
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Analysis of Differentially Expressed Genes by Resveratrol Using Membrane Microarray
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Kim Jong-Sik
Jang Min-Jung
Kim Hyo-Eun
Kim Soon-Young
Kim Byung-Oh
Sohn Ho-Yong
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Abstract
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In the present study, we investigated whether several phytochemicals (resveratrol, genistein, epicatechin gallate, dially disulfide, caffeic acid phenetyl ester) and sulindac sulfide could induce expression of tumor suppressor p53 protein in human colorectal HCT116 cells. We found that p53 was dramatically induced by all phytochemical treatments except sulindac sulfide. Among treated phytochemicals, we selected resveratrol for further experiments because it is one of the highest p53 inducer. Using a Western blot analysis, we found that resveratrol induced p53 in a dose- and time-dependent manner. Additionally, using membrane-based microarray analysis, we found that twenty-five genes were up-regulated and two genes were down-regulated by resveratrol treatment. Among the up-regulated genes, we selected 4 genes and performed reverse-transcription-PCR to confirm microarray data. The results of RT-PCR were highly accorded with those of membrane microarray. In addition, we found that thrombospondin-1 (TSP-1) expression was not dependent on p53 presence, whereas mammary serine protease inhibitor (MASPIN) expression was dependent on p53 expressed by resveratrol treatment. The results of this study may help to promote our understandings of the molecular mechanisms of chemoprevention that are mediated by resveratrol in human colorectal cancer.
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KEYWORD
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Colorectal cancer, resveratrol, chemoprevention, membrane microarray, p53
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