
pmid: 19969351
The K562 cell line (chronic myeloid leukemia), sensitive to chemotherapy (non-MDR), and the Lucena cell line, resistant to chemotherapy (MDR) were investigated. The results suggest that both cell lines possess CD34+CD38- profiles of hematopoietic stem cell markers. The promoter regions of ABCB1, ABCG2 and ABCC1 genes contain binding sites for the Oct-4 transcripton factor, which is also considered a marker of tumor stem cells. Lucena cells showed an over-expression of the ABCB1 gene and a high expression of the Oct-4, ABCG2 and ABCC1 genes as compared to K562 cells.
ATP Binding Cassette Transporter, Subfamily B, Binding Sites, Membrane Glycoproteins, Gene Expression Regulation, Leukemic, Antigens, CD34, ADP-ribosyl Cyclase 1, Drug Resistance, Multiple, Neoplasm Proteins, Drug Resistance, Neoplasm, Cell Line, Tumor, Leukemia, Myelogenous, Chronic, BCR-ABL Positive, Antigens, Surface, Biomarkers, Tumor, Neoplastic Stem Cells, ATP Binding Cassette Transporter, Subfamily G, Member 2, Humans, ATP-Binding Cassette Transporters, ATP Binding Cassette Transporter, Subfamily B, Member 1, Multidrug Resistance-Associated Proteins, K562 Cells
ATP Binding Cassette Transporter, Subfamily B, Binding Sites, Membrane Glycoproteins, Gene Expression Regulation, Leukemic, Antigens, CD34, ADP-ribosyl Cyclase 1, Drug Resistance, Multiple, Neoplasm Proteins, Drug Resistance, Neoplasm, Cell Line, Tumor, Leukemia, Myelogenous, Chronic, BCR-ABL Positive, Antigens, Surface, Biomarkers, Tumor, Neoplastic Stem Cells, ATP Binding Cassette Transporter, Subfamily G, Member 2, Humans, ATP-Binding Cassette Transporters, ATP Binding Cassette Transporter, Subfamily B, Member 1, Multidrug Resistance-Associated Proteins, K562 Cells
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