title: p53/p21(WAF1/CIP1) expression and its possible role in G1 arrest and apoptosis in ellagic acid treated cancer cells.
abstract: Ellagic acid is a phenolic compound present in fruits and nuts including raspberries, strawberries and walnuts. It is known to inhibit certain carcinogen-induced cancers and may have other chemopreventive properties. The effects of ellagic acid on cell cycle events and apoptosis were studied in cervical carcinoma (CaSki) cells. We found that ellagic acid at a concentration of 10(-5) M induced G arrest within 48 h, inhibited overall cell growth and induced apoptosis in CaSki cells after 72 h of treatment. Activation of the cdk inhibitory protein p21 by ellagic acid suggests a role for ellagic acid in cell cycle regulation of cancer cells.
authors.affiliation: Cancer Prevention Program, Hollings Cancer Center, Medical University of South Carolina, Charleston 29425, USA. bhagavati@musc.edu
authors.forename: B A
authors.initials: BA
authors.lastname: Narayanan
authors.forename: O
authors.initials: O
authors.lastname: Geoffroy
authors.forename: M C
authors.initials: MC
authors.lastname: Willingham
authors.forename: G G
authors.initials: GG
authors.lastname: Re
authors.forename: D W
authors.initials: DW
authors.lastname: Nixon
mesh_terms: D017209:Apoptosis; D015153:Blotting, Western; D002455:Cell Division / Q000187:drug effects; D050759:Cyclin-Dependent Kinase Inhibitor p21; D016213:Cyclins / Q000096:biosynthesis*; D004247:DNA / Q000096:biosynthesis; D053938:DNA Fragmentation; D004305:Dose-Response Relationship, Drug; D004610:Ellagic Acid / Q000494:pharmacology*; D004791:Enzyme Inhibitors / Q000378:metabolism*; D005434:Flow Cytometry; D016193:G1 Phase / Q000187:drug effects*; D006801:Humans; D009369:Neoplasms / Q000378:metabolism*; D013997:Time Factors; D014407:Tumor Cells, Cultured; D016159:Tumor Suppressor Protein p53 / Q000096:biosynthesis*
chemical_list: C493956:CDKN1A protein, human; D050759:Cyclin-Dependent Kinase Inhibitor p21; D016213:Cyclins; D004791:Enzyme Inhibitors; D016159:Tumor Suppressor Protein p53; D004610:Ellagic Acid; D004247:DNA