Side Population in Human Lung Cancer Cell Lines and Tumors Is Enriched with Stem-like Cancer Cells

Abstract excerpt

Stem cells have been isolated by their ability to efflux Hoechst 33342 dye and are referred to as the "side population" (SP). In this study, we used flow cytometry and Hoechst 33342 dye efflux assay to isolate and characterize SP cells from six human lung cancer cell lines (H460, H23, HTB-58, A549, H441, and H2170). Nonobese diabetic/severe combined immunodeficiency xenograft experiments showed that SP cells were...

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