title: Signaling pathway for aloe-emodin-induced apoptosis in human H460 lung nonsmall carcinoma cell.
abstract: Aloe-emodin (1,8-dihydroxy-3-(hydroxymethyl)-anthraquinone) is an active component from the root and rhizome of Rheum palmatum that has been reported to exhibit antitumor effects through an unknown mechanism. Our study investigated the mechanisms of aloe-emodin-induced cell death in the human lung nonsmall cell carcinoma cell line H460. Aloe-emodin (40 microM)-induced apoptosis of H460 cells involves modulation of cAMP-dependent protein kinase, protein kinase C, Bcl-2, caspase-3 and p38 protein expression. The relationship of various signals involved in cell death, such as cAMP-dependent protein kinase, protein kinase C, Bcl-2, caspase-3 and p38, has been investigated in the regulation of apoptotic cell death of aloe-emodin. We demonstrated that the expression of p38 is an important determinant of apoptotic death induced by aloe-emodin.
authors.affiliation: Graduate Institute of Chinese Pharmaceutical Science, China Medical College, Taichung, Taiwan.
authors.forename: Feng-Tsgh
authors.initials: FT
authors.lastname: Yeh
authors.forename: Chun-Hsiung
authors.initials: CH
authors.lastname: Wu
authors.forename: Hong-Zin
authors.initials: HZ
authors.lastname: Lee
mesh_terms: D000470:Alkaloids; D000880:Anthraquinones; D017209:Apoptosis; D053119:Benzophenanthridines; D015153:Blotting, Western; D002289:Carcinoma, Non-Small-Cell Lung / Q000378:metabolism*; D053148:Caspase 3; D020169:Caspases / Q000378:metabolism; D016923:Cell Death; D002470:Cell Survival; D005576:Colforsin / Q000494:pharmacology; D017868:Cyclic AMP-Dependent Protein Kinases / Q000378:metabolism; D004642:Emodin / Q000031:analogs & derivatives* / Q000494:pharmacology*; D004791:Enzyme Inhibitors / Q000494:pharmacology; D006801:Humans; D007093:Imidazoles / Q000494:pharmacology; D008175:Lung Neoplasms / Q000378:metabolism*; D020928:Mitogen-Activated Protein Kinases / Q000378:metabolism; D010617:Phenanthridines / Q000494:pharmacology; D010766:Phosphorylation; D011493:Protein Kinase C / Q000378:metabolism; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000378:metabolism; D011725:Pyridines / Q000494:pharmacology; D015398:Signal Transduction; D013997:Time Factors; D014407:Tumor Cells, Cultured; D014970:Xanthines / Q000494:pharmacology; D048051:p38 Mitogen-Activated Protein Kinases
chemical_list: D000470:Alkaloids; D000880:Anthraquinones; D053119:Benzophenanthridines; D004791:Enzyme Inhibitors; D007093:Imidazoles; D010617:Phenanthridines; D019253:Proto-Oncogene Proteins c-bcl-2; D011725:Pyridines; D014970:Xanthines; D005576:Colforsin; C008514:methylxanthine; C059635:aloe emodin anthrone; C518327:aloe emodin; C016299:chelerythrine; D017868:Cyclic AMP-Dependent Protein Kinases; D011493:Protein Kinase C; D020928:Mitogen-Activated Protein Kinases; D048051:p38 Mitogen-Activated Protein Kinases; C505407:CASP3 protein, human; D053148:Caspase 3; D020169:Caspases; D004642:Emodin; C090942:4-(4-fluorophenyl)-2-(4-hydroxyphenyl)-5-(4-pyridyl)imidazole