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  • Title: Effect of 5'-methylthioadenosine on induction of murine erythroleukemia cell differentiation.
    Author: Shafman TD, Sherman ML, Kufe DW.
    Journal: Biochem Biophys Res Commun; 1984 Oct 15; 124(1):172-7. PubMed ID: 6497877.
    Abstract:
    The polyamines putrescine, spermidine and spermine have been implicated in the regulation of proliferation and differentiation. The present study has monitored the effects of 5'-methylthioadenosine, the metabolic product of spermidine and spermine synthesis, on the appearance of a differentiated murine erythroleukemia cell phenotype. The results demonstrate that increasing concentrations of 5'-methylthioadenosine (1 X 10(-6) to 5 X 10(-4)M) progressively inhibit murine erythroleukemia cell heme synthesis and hemoglobin production. The results also demonstrate that this inhibition of differentiation is not related to depletion of intracellular spermidine or cytostasis. Since 5'-methylthioadenosine is also a known inhibitor of DNA methylation, this naturally occurring nucleoside may be an intermediate involved in both murine erythroleukemia cell proliferation and differentiation.
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