Role of granulocyte-macrophage colony-stimulating factor in Philadelphia (Ph1)-positive acute lymphoblastic leukemia: studies on two newly established Ph1-positive acute lymphoblastic leukemia cell lines (Z-119 and Z-181)

Journal of Cellular Physiology
Z EstrovR Kurzrock

Abstract

Philadelphia chromosome (Ph1)-positive acute lymphoblastic leukemia (ALL) is a malignant disorder characterized by a poor prognosis. In recent years hematopoietic growth factors have been used to recruit myeloid leukemia blasts into the proliferative phase of the cell cycle and as supportive agents, both with cytotoxic regimens and in the setting of bone marrow transplantation. This approach prompted us to investigate whether myeloid growth factors have a role in Ph1 positive ALL. To do this, we utilized two newly established Ph1-positive cell lines, Z-119 and Z-181. Both lines have L2 morphology, ultrastructural characteristics of lymphoblasts and typical B-lineage surface markers identical to those observed in the two Ph1-positive ALL patients from whom they were derived. In addition, a single rearranged immunoglobulin heavy-chain gene (JH) band was found in both cell lines by Southern blot analysis, confirming B-cell clonality. Cytogenetic analysis of the two lines revealed t(9;22). Polymerase chain reaction (PCR) amplified cDNA from both Z-119 and Z-181 cells revealed an e1--a2 BCR-ABL junction, and p190BCR-ABL protein was detected in them by the immune complex kinase assay. Both cell lines produce interleukin (IL)-1 beta, ...Continue Reading

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Citations

Feb 16, 2010·Journal of Molecular Medicine : Official Organ of the Gesellschaft Deutscher Naturforscher Und Ärzte·Shabnam ShalapourThomas Kammertoens
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