Abstract:
:To address the mechanism by which the human globin genes are activated during erythropoiesis, we have used a tiled microarray to analyze the pattern of transcription factor binding and associated histone modifications across the telomeric region of human chromosome 16 in primary erythroid and nonerythroid cells. This 220-kb region includes the alpha globin genes and 9 widely expressed genes flanking the alpha globin locus. This un-biased, comprehensive analysis of transcription factor binding and histone modifications (acetylation and methylation) described here not only identified all known cis-acting regulatory elements in the human alpha globin cluster but also demonstrated that there are no additional erythroid-specific regulatory elements in the 220-kb region tested. In addition, the pattern of histone modification distinguished promoter elements from potential enhancer elements across this region. Finally, comparison of the human and mouse orthologous regions in a unique mouse model, with both regions coexpressed in the same animal, showed significant differences that may explain how these 2 clusters are regulated differently in vivo.
journal_name
Bloodjournal_title
Bloodauthors
De Gobbi M,Anguita E,Hughes J,Sloane-Stanley JA,Sharpe JA,Koch CM,Dunham I,Gibbons RJ,Wood WG,Higgs DRdoi
10.1182/blood-2007-06-097964subject
Has Abstractpub_date
2007-12-15 00:00:00pages
4503-10issue
13eissn
0006-4971issn
1528-0020pii
blood-2007-06-097964journal_volume
110pub_type
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