title: Relationships between multidrug resistance (MDR) and stem cell markers in human chronic myeloid leukemia cell lines.
abstract: 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.
authors.affiliation: Programa de Pós-Graduação em Ciências Fisiológicas, Fisiologia Animal, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil.
authors.forename: Daiane S
authors.initials: DS
authors.lastname: Marques
authors.forename: Juliana Z
authors.initials: JZ
authors.lastname: Sandrini
authors.forename: Robert T
authors.initials: RT
authors.lastname: Boyle
authors.forename: Luis F
authors.initials: LF
authors.lastname: Marins
authors.forename: Gilma S
authors.initials: GS
authors.lastname: Trindade
mesh_terms: D051997:ADP-ribosyl Cyclase 1 / Q000235:genetics / Q000378:metabolism; D018435:ATP Binding Cassette Transporter, Subfamily B; D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1 / Q000235:genetics; D000070997:ATP Binding Cassette Transporter, Subfamily G, Member 2; D018528:ATP-Binding Cassette Transporters / Q000235:genetics; D018952:Antigens, CD34 / Q000235:genetics / Q000378:metabolism; D000954:Antigens, Surface / Q000235:genetics / Q000378:metabolism; D001665:Binding Sites; D014408:Biomarkers, Tumor / Q000235:genetics* / Q000378:metabolism; D045744:Cell Line, Tumor; D018432:Drug Resistance, Multiple / Q000235:genetics* / Q000502:physiology; D019008:Drug Resistance, Neoplasm / Q000235:genetics; D015973:Gene Expression Regulation, Leukemic; D006801:Humans; D020014:K562 Cells; D015464:Leukemia, Myelogenous, Chronic, BCR-ABL Positive / Q000235:genetics* / Q000378:metabolism / Q000473:pathology; D008562:Membrane Glycoproteins / Q000235:genetics / Q000378:metabolism; D027425:ATP-Binding Cassette, Sub-Family C Proteins / Q000235:genetics; D009363:Neoplasm Proteins / Q000235:genetics; D014411:Neoplastic Stem Cells / Q000378:metabolism* / Q000473:pathology; D050814:Octamer Transcription Factor-3 / Q000235:genetics / Q000378:metabolism; D011401:Promoter Regions, Genetic
chemical_list: D051997:ADP-ribosyl Cyclase 1; D018435:ATP Binding Cassette Transporter, Subfamily B; D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1; D000070997:ATP Binding Cassette Transporter, Subfamily G, Member 2; D018528:ATP-Binding Cassette Transporters; D018952:Antigens, CD34; D000954:Antigens, Surface; D014408:Biomarkers, Tumor; D008562:Membrane Glycoproteins; D027425:ATP-Binding Cassette, Sub-Family C Proteins; D009363:Neoplasm Proteins; D050814:Octamer Transcription Factor-3; C513055:ABCB1 protein, human; C116614:ABCG2 protein, human; C498154:CD38 protein, human; C421109:multidrug resistance-associated protein 1