Resveratrol Arrests Cell Cycle and Induces Apoptosis in Human Hepatocellular Carcinoma Huh-7 Cells
Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan. Journal of medicinal food
(Impact Factor: 1.63).
10/2010; 13(6):1415-23. DOI: 10.1089/jmf.2010.1126
Resveratrol has been shown to possess anticancer, anti-aging, anti-inflammatory, antimicrobial, and neuroprotective activities. In this study, we examined the antiproliferative properties of resveratrol and its molecular mechanism(s) of action in Huh-7 cells, a new human hepatoma cell line system for hepatitis C virus. Results showed that resveratrol significantly inhibited Huh-7 cell proliferation (50% inhibitory concentration = 22.4 μg/mL) and effectively induced cell cycle arrest and apoptosis. It up-regulated p21/WAF1 expression in a p53-independent manner, but the expressions of cyclin E, cyclin A, and cyclin-dependent kinase 2 were down-regulated. It also caused an increase in the ratio of pro-apoptotic/anti-apoptotic protein, which was associated with the mitochondrial membrane depolarization and the increase in caspase activity. Resveratrol showed no effect on Fas, Fas ligand, extracellular signal regulated kinase (ERK) 1/2, and p38 expression but down-regulated phospho-ERK and phospho-p38 expression. In addition, resveratrol was noted to trigger autophagic cell death through the increased expression of autophagy-related Atg5, Atg7, Atg9, and Atg12 proteins. These results suggest that resveratrol could be an important chemoprevention agent for hepatoma of hepatitis C virus infection.
Available from: mdpi.com
- "Tanshinone IIA, isolated from S. miltiorrhiza Bunge (Dan-Shen), inhibits proliferation and induces G2/M cell cycle arrest accompanied by up-regulation of calreticulin, caspase-12 and GADD15, and down-regulation of Bcl-2, Cdc25c and Cdc2 in HCC cells. Resveratrol, a compound can be found in P. cuspidatum (Hu-Zhang), induces cell cycle arrest, apoptotic and autophagic cell death in liver cancer cells(Table 2). Tetrandrine, a compound isolated from S. tetrandra (Han-Fang-Ji), inhibits proliferation and arrests cell cycle at G2/M phase in HCC cells. "
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ABSTRACT: Traditional Chinese Medicines, unique biomedical and pharmaceutical resources, have been widely used for hepatocellular carcinoma (HCC) prevention and treatment. Accumulated Chinese herb-derived compounds with significant anti-cancer effects against HCC have been identified. Chinese herbal compounds are effective in preventing carcinogenesis, inhibiting cell proliferation, arresting cell cycle, inducing apoptosis, autophagy, cell senescence and anoikis, inhibiting epithelial-mesenchymal transition, metastasis and angiogenesis, regulating immune function, reversing drug resistance and enhancing the effects of chemotherapy in HCC. This paper comprehensively reviews these compounds and their effects on HCC. Finally, the perspectives and rational application of herbal compounds for HCC management are discussed.
Available from: PubMed Central
- "It has been reported that resveratrol has antitumor activity and immunomodulatory, antioxidative and anti-inflammatory functions, as well as numerous biological activities. Resveratrol has been shown to exhibit in vitro as well as in vivo chemopreventive and chemotherapeutic activities (15,17–20). "
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ABSTRACT: Resveratrol, a naturally occurring polyphenolic phytoalexin antioxidant compound present in grapes and red wine, has been reported to induce various biochemical responses. It has been shown to possess anti-aging, anti-inflammatory and anti-proliferative activities in several cell types. However, the effects of resveratrol in normal cells, including chondrocytes, have not yet been clearly elucidated. The aim of the present study was to evaluate the effects of resveratrol on differentiation and inflammation in rabbit articular chondrocytes and to investigate the underlying mechanism of action. Rabbit articular chondrocytes were treated with 20 μM resveratrol for different time periods or with various concentrations of resveratrol for 24 h. It was observed that the expression levels of type II collagen and sulfated proteoglycan, as determined by western blot analysis and Alcian blue staining, respectively, increased following treatment with resveratrol in a concentration-dependent manner at concentrations up to 20 μM and then decreased at higher concentrations. The expression levels of cyclooxygenase (COX-2) and prostaglandin E2 (PGE2) began to increase at 10 min after the addition of resveratrol, reached peak levels at 3 h and decreased from the peak level thereafter, as determined by western blot analysis and PGE2 assay, respectively. It was also demonstrated that resveratrol caused phosphorylation of mitogen-activated protein kinase proteins [extracellular signal-regulated kinases (ERK), p38 and c-Jun N-terminal kinases (JNK)] and Akt in rabbit articular chondrocytes. The inhibition of ERK, p38 kinase, phosphoinositide 3-kinase (PI3K) and Akt with PD98059, SB203580, LY294002 and triciribine, respectively, suppressed resveratrol-induced type II collagen and COX-2 expression. However, inhibition of JNK with SP600125 produced no clear changes in the expression levels of type II collagen and COX-2. The results suggest that resveratrol in articular chondrocytes stimulates differentiation and inflammation via the ERK, p38 and Akt signaling pathways.
Available from: Michael Bitzer
- "Real-time cell monitoring experiments and SRB assays affirmed the anticancer properties of resveratrol when used in this dosage. The calculated IC50 concentrations of our real-time cell monitoring of HepG2 and HuH7 cells were in line with data which have been published previously , . Interestingly, treatment of HepG2 cells with resveratrol triggered a delayed antiproliferative response within the first 24 h indicating different modes of action in the hepatoma cell lines. "
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ABSTRACT: The polyphenolic alcohol resveratrol has demonstrated promising activities for the prevention and treatment of cancer. Different modes of action have been described for resveratrol including the activation of sirtuins, which represent the class III histone deacetylases (HDACs). However, little is known about the activity of resveratrol on the classical HDACs of class I, II and IV, although these classes are involved in cancer development or progression and inhibitors of HDACs (HDACi) are currently under investigation as promising novel anticancer drugs. We could show by in silico docking studies that resveratrol has the chemical structure to inhibit the activity of different human HDAC enzymes. In vitro analyses of overall HDAC inhibition and a detailed HDAC profiling showed that resveratrol inhibited all eleven human HDACs of class I, II and IV in a dose-dependent manner. Transferring this molecular mechanism into cancer therapy strategies, resveratrol treatment was analyzed on solid tumor cell lines. Despite the fact that hepatocellular carcinoma (HCC) is known to be particularly resistant against conventional chemotherapeutics, treatment of HCC with established HDACi already has shown promising results. Testing of resveratrol on hepatoma cell lines HepG2, Hep3B and HuH7 revealed a dose-dependent antiproliferative effect on all cell lines. Interestingly, only for HepG2 cells a specific inhibition of HDACs and in turn a histone hyperacetylation caused by resveratrol was detected. Additional testing of human blood samples demonstrated a HDACi activity by resveratrol ex vivo. Concluding toxicity studies showed that primary human hepatocytes tolerated resveratrol, whereas in vivo chicken embryotoxicity assays demonstrated severe toxicity at high concentrations. Taken together, this novel pan-HDACi activity opens up a new perspective of resveratrol for cancer therapy alone or in combination with other chemotherapeutics. Moreover, resveratrol may serve as a lead structure for chemical optimization of bioavailability, pharmacology or HDAC inhibition.
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