Electrophoretic analysis of the cytoplasmic and nuclear protein changes after induction of differentiation in WEHI‐3B myelomonocytic leukemia cells

Abstract

In response to a differentiation factor (G‐CSF) the myelomonocytic leukemia cell line (WEHI‐3B(D+) differentiates to form mature macrophages and neutrophils. The effect of G‐CSF on WEHI‐3B(D+) differentiation was augmented by low concentrations (5 ng/ml) of actinomycin D. Quantitative binding of an antineutrophil serum was used to segregate the differentiated cells from the leukemic blast cells. Molecular markers of later myeloid differentiation were detected in myelocytes and macrophages purified from differentiating WEHI‐3B(D+ ) cells. To study the initial molecular processes associated with the initiation of WEHI‐3B(D+) cells to differentiation, the protein changes were analyzed using gel..