Abstract：
:The molecular hallmark of Philadelphia chromosome-positive acute lymphoblastic leukemia (ALL) is the expression of 1 of 2 alternate forms of the aberrant BCR-ABL protein-p210BCR-ABL or p190BCR-ABL. The presence of BCR-ABL message provides a target for analyzing the lineage derivation of this disease. We, therefore, studied myeloid and erythroid progenitor involvement in Philadelphia chromosome-positive ALL. Bone marrow low-density cells from Philadelphia chromosome-positive ALL patients (5 with the p190BCR-ABL and 2 with the p210BCR-ABL anomaly) were cultured in the mixed colony culture assay. cDNA from individually plucked colony-forming unit-granulocyte-macrophage and burst-forming unit-erythroid colonies was then analyzed using the hybridization protection assay in conjunction with the polymerase chain reaction to detect BCR-ABL molecular aberrations. Colony-forming unit-granulocyte-macrophage and burst-forming unit-erythroid colonies from 1 of 5 p190BCR-ABL-positive patients and 1 of 2 p210BCR-ABL-positive patients expressed BCR-ABL transcripts, whereas colony-forming unit-granulocyte-macrophage and burst-forming unit-erythroid colonies from the other patients did not. Our study suggests that the origin of both p190BCR-ABL- and p210BCR-ABL-positive ALL is heterogenous with involvement of either a pluripotent precursor or a lymphoid lineage-committed hematopoietic progenitor.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Estrov Z,Talpaz M,Kantarjian HM,Zipf TF,McClain KL,Kurzrock Rsubject
Has Abstractpub_date
1993-07-15 00:00:00pages
3289-93issue
14eissn
0008-5472issn
1538-7445journal_volume
53pub_type
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