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Título : A primitive hematopoietic cell is the target for the leukemic transformation in human Philadelphia-positive acute lymphoblastic leukemia
Autor : Cobaleda, César; Pérez-Losada, J.; García-Sanz, Ramón; González, María; Sánchez García, Isidro
Fecha de publicación : 2000
Editor: American Society of Hematology
Citación : Blood 95(3): 1007-1013 (2000)
Resumen: BCR-ABL is a chimeric oncogene generated by translocation of sequences from the chromosomal counterpart (c-ABLgene) on chromosome 9 into the BCR gene on chromosome 22. Alternative chimeric proteins, BCR-ABLp190 and BCR-ABLp210, are produced that are characteristic of chronic myelogenous leukemia (CML) and Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph1-ALL). In CML, the transformation occurs at the level of pluripotent stem cells. However, Ph1-ALL is thought to affect progenitor cells with lymphoid differentiation. Here we demonstrate that the cell capable of initiating human Ph1-ALL in non-obese diabetic mice with severe combined immunodeficiency disease (NOD/SCID), termed SCID leukemia–initiating cell (SL-IC), possesses the differentiative and proliferative capacities and the potential for self-renewal expected of a leukemic stem cell. The SL-ICs from all Ph1-ALL analyzed, regardless of the heterogeneity in maturation characteristics of the leukemic blasts, were exclusively CD34+CD38−, which is similar to the cell-surface phenotype of normal SCID-repopulating cells. This indicates that normal primitive cells, rather than committed progenitor cells, are the target for leukemic transformation in Ph1-ALL.
URI : http://hdl.handle.net/10261/6283
ISSN: 0006-4971
E-ISSN: 1528-0020
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