Ionizing-radiation-irradiated Dex (Dex-IR) inhibits the proliferation of non-small cell lung cancer (NSCLC) cells.


<p>(A) The chromatograms of Dex (top) and the fraction of crude extracts with Dex-IR (bottom). The chromatography conditions are given in the Materials and Methods. The arrows indicate the retention time of each peak. (B) Lung cancer cell lines were treated with increasing concentrations of Dex and Dex-IR for 24 h. The effects of Dex-IR at the indicated concentration on the viability of lung cancer cells were determined using the MTT assay and were compared with those of Dex-treated cells. Data are presented as the mean ± standard error of the mean (SEM) of three independent experiments (*<i>P</i> < 0.05). (C) H1650 cells were treated with vehicle (1% DMSO), Dex (100 ug/mL), Dex-IR (100 ug/mL), or doxorubicin (DOXO; 1 μM) for 72 h. DOXO was used as a positive control. Cells were observed using phase-contrast microscopy (40× magnification). The scale bar is 200 μm.</p

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