alexa Human granulocyte colony-stimulating factor receptors in acute myelogenous leukemia.
Neurology

Neurology

Journal of Alzheimers Disease & Parkinsonism

Author(s): Kondo S, Okamura S, Asano Y, Harada M, Niho Y

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Abstract Human granulocyte colony-stimulating factor (G-CSF) receptors on human acute leukemia cells were investigated using human G-CSF iodolabeled by the lactoperoxidase method. Among various human leukemic cell lines, only cells of myelogenous lineage including HL-60, THP-1 and U937 had one type of high-affinity receptor for G-CSF, as shown by Scatchard analysis. Fresh leukemia cells from 19 patients with acute myelogenous leukemia (AML) were then studied. Specific receptors for G-CSF were demonstrated on blast cells in all 19 cases, the mean number of G-CSF receptors per AML cell ranging from 95 to 1436. G-CSF receptors on AML cells appeared to be a single affinity type, although some variations were observed. The mean number of G-CSF receptors on leukemic cells from patients with either FAB M3 or FAB M2 was greater than that of cells from patients with M1 (p less than 0.01, p less than 0.10, respectively). Moreover, the mean number of receptors for G-CSF on CD13- and CD34-positive AML cells was higher than that on CD13-negative and CD34-positive AML cells (p less than 0.01), and the mean number of G-CSF receptors on CD7-positive AML cells was lower than that for CD7-negative AML cells (p less than 0.10). Since the FAB classification and surface phenotypes reflect maturation stages, our findings indicate that the distribution of G-CSF receptors, even on AML cells, may be related to the maturation process.
This article was published in Eur J Haematol and referenced in Journal of Alzheimers Disease & Parkinsonism

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