title: Human granulocyte colony-stimulating factor receptors in acute myelogenous leukemia.
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.
authors.affiliation: First Department of Internal Medicine, Faculty of Medicine, Kyushu University, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Kondo
authors.forename: S
authors.initials: S
authors.lastname: Okamura
authors.forename: Y
authors.initials: Y
authors.lastname: Asano
authors.forename: M
authors.initials: M
authors.lastname: Harada
authors.forename: Y
authors.initials: Y
authors.lastname: Niho
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015703:Antigens, CD / Q000032:analysis; D018952:Antigens, CD34; D019011:Antigens, CD7; D000943:Antigens, Differentiation / Q000032:analysis; D015214:Antigens, Differentiation, Myelomonocytic / Q000032:analysis; D000945:Antigens, Differentiation, T-Lymphocyte / Q000032:analysis; D018826:CD13 Antigens; D003432:Cross-Linking Reagents; D005260:Female; D016179:Granulocyte Colony-Stimulating Factor / Q000378:metabolism; D006801:Humans; D016130:Immunophenotyping; D007457:Iodine Radioisotopes; D007700:Kinetics; D015470:Leukemia, Myeloid, Acute / Q000145:classification / Q000276:immunology / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D016188:Receptors, Granulocyte Colony-Stimulating Factor / Q000378:metabolism*; D014407:Tumor Cells, Cultured
chemical_list: D015703:Antigens, CD; D018952:Antigens, CD34; D019011:Antigens, CD7; D000943:Antigens, Differentiation; D015214:Antigens, Differentiation, Myelomonocytic; D000945:Antigens, Differentiation, T-Lymphocyte; D003432:Cross-Linking Reagents; D007457:Iodine Radioisotopes; D016188:Receptors, Granulocyte Colony-Stimulating Factor; D016179:Granulocyte Colony-Stimulating Factor; D018826:CD13 Antigens