GA-binding protein and p300 are essential components of a retinoic acid-induced enhanceosome in myeloid cells.
GA-binding protein and p300 are essential components of a retinoic acid-induced enhanceosome in myeloid cells.
复制标题
GA 结合蛋白和 p300 是骨髓细胞中视黄酸诱导的增强体的重要组成部分。
DOI:
10.1128/mcb.26.8.3060-3070.2006
复制
发表时间:
2006
影响因子:
5.3
通讯作者:
Rosmarin,AlanG
中科院分区:
文献类型:
--
作者:
Resendes,KarenK;Rosmarin,AlanG
Expression of CD18, the β chain of the leukocyte integrins, is transcriptionally regulated by retinoic acid (RA) in myeloid cells. Full RA responsiveness of the CD18 gene requires its proximal promoter, which lacks a retinoic acid response element (RARE). Rather, RA responsiveness of the CD18 proximal promoter requiresetssites that are bound by GA-binding protein (GABP). The transcriptional coactivator, p300, further increases CD18 RA responsiveness. We demonstrate that GABPα, theetsDNA-binding subunit of GABP, physically interacts with p300 in myeloid cells. This interaction involves the GABPα pointed domain (PNT) and identifies p300 as the first known interaction partner of GABPα PNT. Expression of the PNT domain, alone, disrupts the GABPα-p300 interaction and decreases the RA responsiveness of the CD18 proximal promoter. Chromatin immunoprecipitation and chromosome conformation capture demonstrate that, in the presence of RA, GABPα and p300 at the proximal promoter recruit retinoic acid receptor/retinoid X receptor from a distal RARE to form an enhanceosome. A dominant negative p300 construct disrupts enhanceosome formation and reduces the RA responsiveness of CD18. Thus, proteins on the CD18 proximal promoter recruit the distal RARE in the presence of RA. This is the first description of an RA-induced enhanceosome and demonstrates that GABP and p300 are essential components of CD18 RA responsiveness in myeloid cells.
登录
查看更多内容
DOI:
--
发表时间:
1983
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Chamberlain,BK;Levitsky,DO;Fleischer,S
通讯作者:
Fleischer,S
影响因子:
4.8
作者:
L. Jones;S. Cala
通讯作者:
S. Cala
DOI:
10.1016/s0021-9258(18)61565-0
发表时间:
1987-02
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
F. Lattanzio;Robert;Schlattererl;Michael Nicart;Kevin;Campbell;John L. SutkoSQII
通讯作者:
F. Lattanzio;Robert;Schlattererl;Michael Nicart;Kevin;Campbell;John L. SutkoSQII
DOI:
--
发表时间:
1986-05
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
G. Meissner
通讯作者:
G. Meissner
DOI:
10.1016/s0021-9258(19)75701-9
发表时间:
1987-02
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
M. Inui;A. Saito;S. Fleischer
通讯作者:
M. Inui;A. Saito;S. Fleischer