DNA methylation and regulation of the human beta-globin-like genes in mouse erythroleukemia cells containing human chromosome 11.
AUTOR(ES)
Ley, T J
RESUMO
The human beta-globin gene is expressed--but the human fetal (gamma) and embryonic (epsilon) globin genes are not--in an induced mouse erythroleukemia cell line (M11-X) that contains most of human chromosome 11. A 24-hr exposure of M11-X cells to 5-azacytidine before induction causes "global" DNA hypomethylation but selective activation of the human gamma-globin genes. Genomic DNA is remethylated 2-3 days after exposure to 5-azacytidine, but sequences near the human and mouse globin genes remain hypomethylated, suggesting that the remethylation process is inhibited in these regions.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=391981Documentos Relacionados
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