Abstract:
:The Csf1r locus encodes the receptor for macrophage colony-stimulating factor, which controls the proliferation, differentiation and survival of macrophages. The 300 bp Fms intronic regulatory element (FIRE), within the second intron of Csf1r, is necessary and sufficient to direct macrophage-specific transcription. We have analysed the conservation and divergence of the FIRE DNA sequence in vertebrates. FIRE is present in the same location in the Csf1r locus in reptile, avian and mammalian genomes. Nearest neighbor analysis based upon this element alone largely recapitulates phylogenies inferred from much larger genomic sequence datasets. One core element, containing binding sites for AP1 family and the macrophage-specific transcription factor, PU.1, is conserved from lizards to humans. Around this element, the FIRE sequence is conserved within clades with the most conserved elements containing motifs for known myeloid-expressed transcription factors. Conversely, there is little alignment between clades outside the AP1/PU.1 element. The analysis favours a hybrid between "enhanceosome" and "smorgasbord" models of enhancer function, in which elements cooperate to bind components of the available transcription factor milieu.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Hume DA,Wollscheid-Lengeling E,Rojo R,Pridans Cdoi
10.1038/s41598-017-15999-xsubject
Has Abstractpub_date
2017-12-07 00:00:00pages
17115issue
1issn
2045-2322pii
10.1038/s41598-017-15999-xjournal_volume
7pub_type
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