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epigallocatechin/rak

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The polyphenol epigallocatechin-3 gallate (EGCG) in green tea suppresses tumor growth by direct action on tumor cells and by inhibition of angiogenesis, but it is not known whether it specifically inhibits tumor angiogenesis. We examined the anti-angiogenic effect of EGCG on tumor-associated
Cancer stem cells (H1299-sdCSCs) were obtained from tumour spheres of H1299 human lung cancer cells. We studied low stiffness, a unique biophysical property of cancer cells, in H1299-sdCSCs and parental H1299. Atomic force microscopy revealed an average Young's modulus value of 1.52 kPa for
A preliminary study was conducted to investigate feasibility of using an oral cancer chemopreventive agent (-)-epigallocatechin-3-gallate (EGCG), the most biologically active component in the green tea extract, in a form of 'swish-and-spit' mouthwash. Such application of EGCG is beneficial as it
Chemical inhibitors of fatty acid synthase (FAS) inhibit growth and induce apoptosis in several cancer cell lines in vitro and in tumor xenografts in vivo. Recently the green tea component epigallocatechin-3-gallate (EGCG) was shown to act as a natural inhibitor of FAS in chicken liver extracts.
OBJECTIVE Epidermal growth factor receptor (EGFR/ErbB1) is a transmembrane protein with tyrosine kinase activity activated mainly by ligand, EGF. Matrix metalloproteinases (MMPs) are a family of proteinases that catalyses the destruction of ECM, among which MMP-9 has important role in tumor cell
Bladder cancer is the fourth most common cancer in men and ninth most common in women. It has a protracted course of progression and is thus an ideal candidate for chemoprevention strategies and trials. This study was conducted to evaluate the chemopreventive/antiproliferative potential of

Mechanisms of inhibition of tumor angiogenesis and vascular tumor growth by epigallocatechin-3-gallate.

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OBJECTIVE Green tea consumption has been linked to a reduced occurrence of some tumor types. Current data indicate that the principal mediator of this chemopreventive effect is epigallocatechin-3-gallate (EGCG), the most abundant polyphenol found in dried tea leaves. Here, we examined the effects of
Epigallocatechin gallate (EGCG), which is derived from green tea, is well known for its chemopreventive activity. Several studies have shown that p53 plays an important role in the activity of EGCG; however, the mechanism by which EGCG regulates p53 requires further investigation. In the present
Previously, we demonstrated synergistic enhancement of vasorelaxation by combination treatment with Trp-His and epigallocatechin gallate (EGCg) in intact rat aorta. The aim of the present study was to determine whether this vasorelaxant synergy could be recapitulated in tumor necrosis factor-alpha
During the process of skin tumor promotion, expression of the cutaneous cancer stem cell (CSC) marker CD34(+) is required for stem cell activation and tumor formation. A previous study has shown that activation of protein kinase D1 (PKD1) is involved in epidermal tumor promotion; however, the
We investigated whether inhalation of aerosolized epigallocatechin gallate (EGCG) would prevent the development of lung tumors produced by tobacco smoke (TS). Male strain A/J mice were exposed for 5 mo, 6 h/day, 5 days/wk, to a mixture of tobacco sidestream and mainstream smoke. At the end of this

Cancer preventive mechanisms of the green tea polyphenol (-)-epigallocatechin-3-gallate.

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Accumulating evidence indicates that consumption of tea, especially green tea, is good for preventing cancer. To elucidate the cancer preventive mechanisms of green tea, much effort has been devoted to investigating the anticancer effects of (-)-epigallocatechin-3-gallate (EGCG), the major component

Tumor gelatinases and invasion inhibited by the green tea flavanol epigallocatechin-3-gallate.

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BACKGROUND Given the association of consumption of green tea with prevention of cancer development, metastasis, and angiogenesis, the effect of the main flavanol present, epigallocatechin-3-gallate (EGCG), on two gelatinases most frequently overexpressed in cancer and angiogenesis (MMP-2 and MMP-9)
(-)-Epigallocatechin-3-gallate (EGCG) has exhibited been studied for lung cancer inhibitory activity in vitro and in animal models, but it is rapidly methylated and inactivated by catechol-O-methyltransferase (COMT). Entacapone and tolcapone, COMT inhibitors, are used to mitigate the symptoms of
In this study we characterized (3)H-2-deoxy-d-glucose ((3)H -DG) uptake by the estrogen receptor (ER)-positive MCF7 and the ER-negative MDA-MB-231 human breast cancer cell lines and investigated the effect of quercetin (QUE) and epigallocatechin gallate (EGCG) upon (3)H-DG uptake, glucose metabolism
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