A highly conserved c‐fms gene intronic element controls macrophage‐specific and regulated expression
A highly conserved c‐fms gene intronic element controls macrophage‐specific and regulated expression
复制标题
高度保守的 c-fms 基因内含子元件控制巨噬细胞特异性和调节表达
DOI:
10.1189/jlb.70.5.812
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发表时间:
2001
影响因子:
5.5
通讯作者:
D. Hume
中科院分区:
文献类型:
--
作者:
S. R. Himes;H. Tagoh;N. Goonetilleke;T. Sasmono;D. Oceandy;Richard Clark;C. Bonifer;D. Hume
The c‐fms gene encodes the receptor for macrophage colony‐stimulating factor‐1. This gene is expressed selectively in the macrophage cell lineage. Previous studies have implicated sequences in intron 2 that control transcript elongation in tissue‐specific and regulated expression of c‐fms. Four macrophage‐specific deoxyribonuclease I (DNase I)‐hypersensitive sites (DHSs) were identified within mouse intron 2. Sequences of these DHSs were found to be highly conserved compared with those in the human gene. A 250‐bp region we refer to as the fms intronic regulatory element (FIRE), which is even more highly conserved than the c‐fms proximal promoter, contains many consensus binding sites for macrophage‐expressed transcription factors including Sp1, PU.1, and C/EBP. FIRE was found to act as a macrophage‐specific enhancer and as a promoter with an antisense orientation preference in transient transfections. In stable transfections of the macrophage line RAW264, as well as in clones selected for high‐ and low‐level c‐fms mRNA expression, the presence of intron 2 increased the frequency and level of expression of reporter genes compared with those attained using the promoter alone. Removal of FIRE abolished reporter gene expression, revealing a suppressive activity in the remaining intronic sequences. Hence, FIRE is shown to be a key regulatory element in thefms gene.
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影响因子:
3.1
作者:
Amaravadi, L;Klemsz, MJ
通讯作者:
Klemsz, MJ
影响因子:
--
作者:
P. Roth;E. Stanley
通讯作者:
P. Roth;E. Stanley
DOI:
--
发表时间:
1998
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Makar,KW;Pham,CT;Dehoff,MH;O'Connor,SM;Jacobi,SM;Holers,VM
通讯作者:
Holers,VM
影响因子:
20.3
作者:
Roberts,WM;Shapiro,LH;Ashmun,RA;Look,AT
通讯作者:
Look,AT