Background: The anticancer effects of cordyceps on various tumors have been reported. However, little is known about the role of selenium (Se)-enriched in non-small cell lung cancer (NSCLC). In this study, the effects of Se-enriched on cell proliferation, cell apoptosis and cell cycle in NSCLC cell line NCI-H292 and A549 were investigated.
Methods: CCK-8 assay was used to determine the appropriate concentrations of Se-enriched in NSCLC (namely NCI-H292 and A549) cells. Colony formation assay, flow cytometric and Hoechst 33342 staining assays, and flow cytometric analysis were separately employed to assess the effect of increased Se-enriched on NSCLC cell viability, cell apoptosis and cell-cycle distribution. Finally, the qPCR and Western blot assays were, respectively, applied to evaluate the effects of Se-enriched on the expression of pro-apoptotic member BAX and the anti-apoptotic member BCL-2, as well as of G2/M cell cycle regulatory proteins CDK1 and cyclin B1.
Results: The concentration of Se-enriched was 0, 4, 8, 12 mg/mL for NCI-H292 cells, and 0, 12.5, 25, 50 mg/mL for A549 cells. NSCLC cells treated with increased Se-enriched showed the inhibited cell viability. Se-enriched induced NSCLC cell apoptosis in concentration-dependent manner. Consistently, Se-enriched diminished the ratio of anti-apoptotic member BCL-2 and pro-apoptotic member BAX at mRNA and protein levels in NSCLC cells. The percentage in G2/M phase was increased in NSCLC cells treated with increased Se-enriched . Downregulation of G2/M cell cycle regulatory proteins CDK1 and cyclin B1 at mRNA and protein levels in NSCLC cells further confirmed the effects of Se-enriched on cell cycle.
Conclusion: This study demonstrated the inhibitory role of Se-enriched in cell proliferation and its facilitating role in cell apoptosis and cell cycle in NSCLC cells, suggesting an alternative therapeutic strategy for NSCLC treatment.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6817841 | PMC |
| http://dx.doi.org/10.2147/OTT.S217017 | DOI Listing |
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