Title : Phorbol ester TPA modulates chemoresistance in the drug sensitive breast cancer cell line MCF-7 by inducing expression of drug efflux transporter ABCG2.

Pub. Date : 2012

PMID : 22938493






6 Functional Relationships(s)
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1 In this study, we aimed to evaluate any positive correlation between COX-2 and ABCG2 gene expression using the COX-2 inducer 12-O-tetradecanoylphorbol-13-acetate (TPA) in human breast cancer cell lines. Tetradecanoylphorbol Acetate prostaglandin-endoperoxide synthase 2 Homo sapiens
2 In this study, we aimed to evaluate any positive correlation between COX-2 and ABCG2 gene expression using the COX-2 inducer 12-O-tetradecanoylphorbol-13-acetate (TPA) in human breast cancer cell lines. Tetradecanoylphorbol Acetate prostaglandin-endoperoxide synthase 2 Homo sapiens
3 In this study, we aimed to evaluate any positive correlation between COX-2 and ABCG2 gene expression using the COX-2 inducer 12-O-tetradecanoylphorbol-13-acetate (TPA) in human breast cancer cell lines. Tetradecanoylphorbol Acetate prostaglandin-endoperoxide synthase 2 Homo sapiens
4 In this study, we aimed to evaluate any positive correlation between COX-2 and ABCG2 gene expression using the COX-2 inducer 12-O-tetradecanoylphorbol-13-acetate (TPA) in human breast cancer cell lines. Tetradecanoylphorbol Acetate prostaglandin-endoperoxide synthase 2 Homo sapiens
5 A significant increase of COX-2 mRNA expression (up to 11-fold by 4 h) was induced by TPA in MDA-MB-231 cells, this induction effect being lower in MCF-7 cells. Tetradecanoylphorbol Acetate prostaglandin-endoperoxide synthase 2 Homo sapiens
6 In conclusion, based on the observed effects of TPA in MDA-Mb-231 cells, it is proposed that TPA up-regulates ABCG2 expression in the drug sensitive MCF-7 breast cancer cell line through COX-2 unrelated pathways. Tetradecanoylphorbol Acetate prostaglandin-endoperoxide synthase 2 Homo sapiens