Characterization and induction of a cell line established from a patient with erythroleukemia (FAB M6).

A human cell line, designated as NISI, was established from a patient with erythroleukemia (FAB M6). The presence of a chromosome marker in NISI line indicates that it is derived from the leukemic clone which bears the common marker. The cell line shows morphology of immature erythroblast and has myelocytic properties from surface immunophenotyping. The differentiation capacities of NISI cells by three inducers (hemin, phorbor 12-myristate 13-acetate and 1-25-(OH)2D3) were evaluated. Hemin treated cells showed a significant increase in erythroid antigen expression as well as an increase in number of benzidine positive cells. Phorbor 12-myristate 13-acetate treated cells demonstrated a significant increase in megakaryocytic antigen expression, and a slightly diminished CD36 antigen expression. The surface markers of 1-25-(OH)2D3 treated cells did not demonstrate significant changes. NISI cell line, a human erythroleukemia cell line, still retained the tendency for differentiation to megakaryocytic lineage.