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- W1988517263 abstract "<i>Objective:</i> Interferon-α (IFNα) treatment is associated with up-regulation of epidermal growth factor receptor (HER1/EGFR) expression and marked growth inhibition of colon cancer cell lines in vitro.We aimed to determine the effect of combining IFNα and gefitinib on colon cancer cell line growth. <i>Methods:</i> A panel of nine colon cancer cell lines were characterised for expression of HER1/EGFR and then treated with gefitinib alone, or IFNα alone, or IFNα plus gefitinib, following a pre-treatment using vehicle or IFNα. Crystal violet staining and flow cytometry were used to assess cell proliferation and expression of HER1/EGFR. The indexes and statistical assays were used to evaluate significant differences between treatment groups against vehicle control. <i>Results:</i> All cell lines except SW620 were HER1/EGFR positive. IFNα treatment was associated with significant up-regulation of cell surface HER1/EGFR expression in all HER1/EGFR-positive cell lines except KM12SM. Concurrent treatment with IFNα and gefitinib, or IFNα pre-treatment followed by gefitinib, or IFNα pre-treatment followed by a combination of IFNα plus gefitinib, additively or supra-additively/synergistically enhanced the sensitivity of the seven HER1/EGFR-up-regulated cell lines. <i>Conclusion:</i> IFNα improves the anti-proliferative effect of EGFR inhibition in colorectal cancer cell lines. This approach may have clinical implications for improving treatment based on targeting of HER1/EGFR." @default.
- W1988517263 created "2016-06-24" @default.
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- W1988517263 date "2005-01-01" @default.
- W1988517263 modified "2023-10-16" @default.
- W1988517263 title "Interferon-α Promotes the Anti-Proliferative Effect of Gefitinib (ZD1839) on Human Colon Cancer Cell Lines" @default.
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- W1988517263 doi "https://doi.org/10.1159/000088070" @default.
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