By a News Reporter-Staff News Editor at Cancer Weekly -- Investigators discuss new findings in Diet and Nutrition. According to news reporting originating from College Station, Texas, by NewsRx correspondents, research stated, "Resveratrol and quercetin (RQ) in combination (1:1 ratio) previously inhibited growth in human leukemia cells. This study investigated the anticancer activity of the same mixture in HT-29 colon cancer cells."
Our news editors obtained a quote from the research from Texas A&M University, "RQ decreased the generation of reactive oxygen species (ROS) by up to 2.25-fold and increased the antioxidant capacity by up to 3-fold in HT-29 cells (3.8-60 g/mL), whereas IC50 values for viability were 18.13, 18.73, and 11.85 g/mL, respectively. RQ also induced caspase-3-cleavage (2-fold) and increased PARP cleavage. Specificity protein (Sp) transcription factors are overexpressed in colon and other cancers and regulate genes required for cell proliferation survival and angiogenesis. RQ treatment decreased the expression of Sp1, Sp3, and Sp4 mRNA and this was accompanied by decreased protein expression. Moreover, the Sp-dependent antiapoptotic survival gene survivin was also significantly reduced, both at mRNA and protein levels. RQ decreased microRNA-27a (miR-27a) and induced zinc finger protein ZBTB10, an Sp-repressor, suggesting that interactions of RQ with the miR-27a-ZBTB10-axis play a role in Sp downregulation. This was confirmed by transfection of cells with the specific mimic for miR-27a, which partially reversed the effects of RQ."
According to the news editors, the research concluded: "These findings are consistent with previous studies on botanical anticancer agents in colon cancer cells."
For more information on this research see: Resveratrol and quercetin in combination have anticancer activity in colon cancer cells and repress oncogenic microRNA-27a. Nutrition and Cancer, 2013;65(3):494-504 (see also Diet and Nutrition).
The news editors report that additional information may be obtained by contacting A. Del Follo-Martinez, Dept. of Nutrition and Food Science, Texas A&M University, College Station, Texas 77843, United States.
Keywords for this news article include: Texas, United States, College Station, Diet and Nutrition, North and Central America.
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