Inhibitors for protein-tyrosine kinases, ST638 and genistein, induce differentiation of mouse erythroleukemia cells in a synergistic Manner |
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Authors: | Toshio Watanabe Tadayoshi Shiraishi Hiroki Sasaki Michio Oishi |
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Institution: | Institute of Applied Microbiology, University of Tokyo, Japan. |
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Abstract: | In order to investigate the biochemical nature of intracellular cascades leading to cellular differentiation in vitro, we examined the effect of inhibitors of protein phosphorylation on terminal erythroid differentiation of mouse erythroleukemia (MEL) cells. We have found that specific inhibitors of protein phosphorylation at tyrosine residues, ST638 and genistein, effectively induce differentiation in a synergistic manner with an agent which blocks DNA replication such as mitomycin C (MMC). Based upon these findings, the possible involvement of protein phosphorylation (and dephosphorylation) at tyrosine residues in differentiation is discussed. |
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