Coffee polyphenols change the expression of STAT5b and ATF-2 modifying cyclin D1 levels in cancer cells (original) (raw)

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Títol: Coffee polyphenols change the expression of STAT5b and ATF-2 modifying cyclin D1 levels in cancer cells
Autor: Ciudad i Gómez, Carlos JuliánNoé Mata, VerónicaIzquierdo Pulido, Maria
Matèria: Cafè (Beguda)PolifenolsCèl·lules cancerosesCàncer de mamaCàncer colorectalCoffee drinkPolyphenolsCancer cellsBreast cancerColorectal cancer
Data de publicació: 2012
Publicat per: Hindawi
Resum: Background: Epidemiological studies suggest that coffee consumption reduces the risk of cancer, but the molecular mechanisms of its chemopreventive effects remain unknown. Objective: To identify differentially expressed genes upon incubation of HT29 colon cancer cells with instant caffeinated coffee (ICC) or caffeic acid (CA) using whole genome microarrays. Results: ICC incubation of HT29 cells caused the overexpression of 57 genes and the underexpression of 161, while CA incubation induced the overexpression of 12 genes and the underexpression of 32. Using Venn-Diagrams, we built a list of five overexpressed genes and twelve underexpressed genes in common between the two experimental conditions. This list was used to generate a biological association network in which STAT5B and ATF-2 appeared as highly interconnected nodes. STAT5B overexpression was confirmed at the mRNA and protein levels. For ATF-2, the changes in mRNA levels were confirmed for both ICC and CA, whereas the decrease in protein levels was only observed in CA-treated cells. The levels of cyclin D1, a target gene for both STAT5B and ATF-2, were dowregulated by CA in colon cancer cells and by ICC and CA in breast cancer cells. Conclusions: Coffee polyphenols are able to affect cyclin D1 expression in cancer cells through the modulation of STAT5B and ATF-2.
Nota: Reproducció del document publicat a: http://dx.doi.org/10.1155/2012/390385
És part de: Oxidative Medicine and Cellular Longevity, 2012, vol. 2012
URI: https://hdl.handle.net/2445/32948
Recurs relacionat: http://dx.doi.org/10.1155/2012/390385
ISSN: 1942-0900
Apareix en les col·leccions: Articles publicats en revistes (Bioquímica i Biomedicina Molecular)

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