Tyrosine phosphorylation of vav protooncogene product in primary human myelogenous leukemic cells stimulated by granulocyte colony-stimulating factor - PubMed (original) (raw)

. 1995 Jun 15;211(2):677-85.

doi: 10.1006/bbrc.1995.1865.

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Tyrosine phosphorylation of vav protooncogene product in primary human myelogenous leukemic cells stimulated by granulocyte colony-stimulating factor

A Yuo et al. Biochem Biophys Res Commun. 1995.

Abstract

Granulocyte colony-stimulating factor(G-CSF), but not granulocyte-macrophage CSF(GM-CSF), induced tyrosine phosphorylation of 95-kDa protein in 13 cases of primary human acute myelogenous leukemic cells. Electrophoretic mobility of 95-kDa phosphoprotein and the protooncogene product p95vav was identical. In addition, p95vav was tyrosine-phosphorylated only in G-CSF-stimulated cells. In contrast to primary leukemic cells, amount of p95vav was under detectable level and G-CSF did not induce tyrosine phosphorylation of 90-100-kDa proteins in human neutrophils. These results indicate specific involvement of vav product in signaling pathway of G-CSF in primary human leukemic cells.

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