Linked Life Data

8218415

Source:http://linkedlifedata.com/resource/pubmed/id/8218415

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1993-12-2
pubmed:abstractText
The occurrence, upon differentiation, of a transient DNA hypomethylation has been observed in Friend erythroleukemia cells. Treatment with hexamethylenebisacetamide (HMBA) induces within 24 h a 20% hypomethylation of newly synthesized DNA, that is followed by re-methylation before completion of the differentiative process, as measured by the appearance of benzidine-positive cells. We examined a series of mutant clones which continue to grow in the presence of an inducer. Methylcytosine content of DNA was measured by HPLC, after cell labeling with [3H]uridine. We found that one of these continuously growing clones, which was still capable of hemoglobin synthesis, showed the same degree of hypomethylation as the parental one. The re-methylation process did not occur, however, unless erythroid differentiation was reverted by the removal of the inducer. In another clone which had lost the capacity to synthesize hemoglobin, no DNA hypomethylation was detectable. These experiments show that DNA hypomethylation is an early event strictly related to cell differentiation but not to cell growth arrest.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0006-3002
pubmed:author
pubmed:issnType
Print
pubmed:day
19
pubmed:volume
1216
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
50-4
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
DNA hypomethylation and differentiation in Friend leukemia cell variants.
pubmed:affiliation
Department of Biochemical Sciences A. Rossi Fanelli, University La Sapienza, Rome, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't