title: T-cell involvement in benign phase chronic myelogenous leukemia.
abstract: T cells from the peripheral blood of patients with chronic myeloid leukemia (CML) were cultured with phytohemagglutinin and T-cell growth factor (TCGF) in agar culture. These T-cell colonies were pooled and expanded further in liquid culture with TCGF and then simultaneously analysed for the E-rosette receptor with the monoclonal antibody OKT11 and for the presence of the Philadelphia (Ph1) chromosome. OKT11 analysis showed these populations to be composed 99.5% or more of T cells. In four of the seven patients the T-cell suspension showed 7/50 (14%), 3/36 (8%), 2/34 (6%), and 4/44 (9%) Ph1 metaphases. Furthermore, Ph1 metaphases were demonstrated in T-cell cultures in two patients when bone marrow metaphases simultaneously showed 90 and 100% Ph1 negative metaphases secondary to human leukocyte interferon therapy or combination chemotherapy. A minority of T cells in benign phase CML have the Ph1 abnormality despite reduced number of Ph1 metaphases in bone marrow from therapy.
mesh_terms: D000328:Adult; D000945:Antigens, Differentiation, T-Lymphocyte; D000954:Antigens, Surface / Q000032:analysis; D002478:Cells, Cultured; D005260:Female; D006801:Humans; D007951:Leukemia, Myeloid / Q000209:etiology* / Q000235:genetics; D008297:Male; D008677:Metaphase; D008875:Middle Aged; D010677:Philadelphia Chromosome; D013601:T-Lymphocytes / Q000502:physiology* / Q000648:ultrastructure
chemical_list: D000945:Antigens, Differentiation, T-Lymphocyte; D000954:Antigens, Surface