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Full-Text Articles in Biochemistry, Biophysics, and Structural Biology

Peroxisome Proliferator-Activated Receptor Ligand Mcc-555 Suppresses Intestinal Polyps In Apcmin/+ Mice Via Extracellular Signal-Regulated Kinase And Peroxisome Proliferator-Activated Receptor-Dependent Pathways, K Yamaguchi, Maria Cekanova, Michael Mcentee, J Yoon, S Fischer, I Renes, I Van Seungnigen, Seung Baek Oct 2010

Peroxisome Proliferator-Activated Receptor Ligand Mcc-555 Suppresses Intestinal Polyps In Apcmin/+ Mice Via Extracellular Signal-Regulated Kinase And Peroxisome Proliferator-Activated Receptor-Dependent Pathways, K Yamaguchi, Maria Cekanova, Michael Mcentee, J Yoon, S Fischer, I Renes, I Van Seungnigen, Seung Baek

Maria Cekanova MS, RNDr, PhD

A large body of studies has suggested that peroxisome proliferator-activated receptor gamma (PPARgamma) ligands, such as thiazolidinedione, are potent candidates for chemopreventive agents. MCC-555 is a PPARgamma/alpha dual agonist and has been shown previously to induce apoptosis in vitro; however, the molecular mechanisms by which MCC-555 affects antitumorigenesis in vivo are poorly understood. In this study, we explored the antitumorigenic effects of MCC-555 both in cell culture and in Apc-deficient mice, an animal model for human familial adenomatous polyposis. MCC-555 increased MUC2 expression in colorectal and lung cancer cells, and treatment with the PPARgamma antagonist GW9662 revealed that MUC2 ...


Peroxisome Proliferator-Activated Receptor Ligand Mcc-555 Suppresses Intestinal Polyps In Apcmin/+ Mice Via Extracellular Signal-Regulated Kinase And Peroxisome Proliferator-Activated Receptor-Dependent Pathways, K Yamaguchi, Maria Cekanova, Michael Mcentee, J Yoon, S Fischer, I Renes, I Van Seungnigen, Seung Baek Aug 2008

Peroxisome Proliferator-Activated Receptor Ligand Mcc-555 Suppresses Intestinal Polyps In Apcmin/+ Mice Via Extracellular Signal-Regulated Kinase And Peroxisome Proliferator-Activated Receptor-Dependent Pathways, K Yamaguchi, Maria Cekanova, Michael Mcentee, J Yoon, S Fischer, I Renes, I Van Seungnigen, Seung Baek

Seung J Baek

A large body of studies has suggested that peroxisome proliferator-activated receptor gamma (PPARgamma) ligands, such as thiazolidinedione, are potent candidates for chemopreventive agents. MCC-555 is a PPARgamma/alpha dual agonist and has been shown previously to induce apoptosis in vitro; however, the molecular mechanisms by which MCC-555 affects antitumorigenesis in vivo are poorly understood. In this study, we explored the antitumorigenic effects of MCC-555 both in cell culture and in Apc-deficient mice, an animal model for human familial adenomatous polyposis. MCC-555 increased MUC2 expression in colorectal and lung cancer cells, and treatment with the PPARgamma antagonist GW9662 revealed that MUC2 ...


Epigallocatechin-3-Gallate Inhibits Interleukin-1beta-Induced Muc5ac Gene Expression And Muc5ac Secretion In Normal Human Nasal Epithelial Cells, H Kim, S Park, S Park, U Moon, B Lee, S Yoon, J Lee, Seung Baek, J Yoon Jul 2008

Epigallocatechin-3-Gallate Inhibits Interleukin-1beta-Induced Muc5ac Gene Expression And Muc5ac Secretion In Normal Human Nasal Epithelial Cells, H Kim, S Park, S Park, U Moon, B Lee, S Yoon, J Lee, Seung Baek, J Yoon

Seung J Baek

It has been reported that the proinflammatory cytokine interleukin-1beta (IL-1beta) induces mucus hypersecretion in normal human nasal epithelial (NHNE) cells and that the MAP kinase pathway may be an important signal pathway in IL-1beta-induced MUC5AC gene expression. Green tea (Camellia sinensis) polyphenols are potent anti-inflammatory agents and have been shown to inhibit inflammation in tumor cell lines and cultured respiratory epithelial cells. In this study, we examined the effect of (-)-epigallocatechin-3-gallate (EGCG), a green tea polyphenol, on IL-1beta-induced MUC5AC gene expression and secretion in NHNE cells. After cells had been treated with IL-1beta (10 ng/ml) and pretreated with EGCG ...