Linked Life Data

3863710

Source:http://linkedlifedata.com/resource/pubmed/id/3863710

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pubmed-article:3863710pubmed:dateCreated1985-11-29lld:pubmed
pubmed-article:3863710pubmed:abstractTextRecent studies have demonstrated that 5'-methylthioadenosine, an inhibitor of S-adenosylhomocysteine (AdoHcy) hydrolase, blocks induction of murine erythroleukemia cell (MEL) differentiation. The nucleoside analogue 3-deazaadenosine (c3Ado) is both an efficient substrate and a potent inhibitor of AdoHcy hydrolase. The present study was undertaken to determine whether c3Ado would similarly inhibit MEL differentiation. The results demonstrate that c3Ado inhibits induction of MEL differentiation by dimethyl sulfoxide, hexamethylene bisacetamide, butyric acid, and diazapam. c3Ado blocks the appearance of the differentiated MEL phenotype by inhibiting both MEL heme synthesis and transcription of alpha- and beta-globin RNA. The inhibitory effect of c3Ado on MEL differentiation is concentration dependent, reversible, and potentiated by L-homocysteine thiolactone. Furthermore the AdoHcy/AdoMet ratio increases nearly 3.5-fold after 24 h of treatment with 50 microM c3Ado. In contrast, this c3Ado effect is not associated with polyamine depletion or cytostasis. These findings indicate that c3Ado blocks the induction of MEL differentiation at a transcriptional level and that this effect may be related to inhibition of AdoHcy hydrolase.lld:pubmed
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pubmed-article:3863710pubmed:authorpubmed-author:KufeD WDWlld:pubmed
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pubmed-article:3863710pubmed:dateRevised2006-11-15lld:pubmed
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pubmed-article:3863710pubmed:articleTitleInhibition of murine erythroleukemia cell differentiation by 3-deazaadenosine.lld:pubmed
pubmed-article:3863710pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:3863710pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed
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