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  • Title: Alteration of gene expression in melanoma cells following combined treatment with E2F-1 and doxorubicin.
    Author: Hao H, Dong YB, Bowling MT, Zhou HS, McMasters KM.
    Journal: Anticancer Res; 2006; 26(3A):1947-56. PubMed ID: 16827129.
    Abstract:
    BACKGROUND: The combination of E2F-1 gene therapy and chemotherapy produces a synergistic effect on melanoma cell apoptosis. However, the molecular mechanisms have not been fully elucidated. The purpose of this study was to identify novel genes or pathways that may play key roles in apoptosis when E2F-1 gene therapy is combined with doxorubicin chemotherapy. MATERIALS AND METHODS: SK-MEL-2 melanoma cells were infected with Ad-E2F-1 alone, Ad-E2F-1 plus doxorubicin, or Ad-LacZ plus doxorubicin. After 16 hours of treatment, the total RNA was extracted from these cells and subjected to microarray analysis. Quantitative real-time PCR was performed to confirm the microarray data. RESULTS: Our results showed that the combination treatment of Ad-E2F-1 and doxorubicin affected the expression of cytokines, transcription factors, as well as genes involved in signal transduction, cell cycle regulation and apoptosis. CONCLUSION: Our findings have identified, for the first time, novel molecular targets and pathways that led to apoptosis in melanoma cells when Ad-E2F-1 was combined with doxorubicin. The molecular information provided here will enhance further mechanistic studies.
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