Differential suppression of the aryl hydrocarbon receptor nuclear translocator-dependent function by an aryl hydrocarbon receptor PAS-A-derived inhibitory molecule.
Differential suppression of the aryl hydrocarbon receptor nuclear translocator-dependent function by an aryl hydrocarbon receptor PAS-A-derived inhibitory molecule.
复制标题
芳烃受体 PAS-A 衍生的抑制分子对芳烃受体核转位子依赖性功能的差异抑制。
DOI:
10.1016/j.bcp.2014.01.021
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发表时间:
2014
影响因子:
5.8
通讯作者:
Chan,WilliamK
中科院分区:
文献类型:
--
作者:
Xie,Jinghang;Huang,Xin;Park,MikiS;Pham,HangM;Chan,WilliamK
The aryl hydrocarbon receptor (AhR) heterodimerizes with the aryl hydrocarbon receptor nuclear translocator (Arnt) for transcriptional regulation. We generated three N-terminal deletion constructs of the human AhR of 12–24 kDa in size – namely D1, D2, and D3 – to suppress the Arnt function. We observed that all three deletions interact with the human Arnt with similar affinities. D2, which contains part of the AhR PAS-A domain and interacts with the PAS-A domain of Arnt, inhibits the formation of the AhR gel shift complex. D2 suppresses the 3-methylcholanthrene-induced, dioxin response element (DRE)-driven luciferase activity in Hep3B cells and exogenous Arnt reverses this D2 suppression. D2 suppresses the induction of CYP1A1 at both the message and protein levels in Hep3B cells; however, the CYP1B1 induction is not affected. D2 suppresses the recruitment of Arnt to thecyp1a1promoter but not to thecyp1b1promoter, partly because the AhR/Arnt heterodimer binds better to thecyp1b1DRE than to thecyp1a1DRE. Interestingly, D2 has no effect on the cobalt chloride-induced, hypoxia inducible factor-1 (HIF-1)-dependent expression ofvegf,aldolasec, andldh-amessages. Our data reveal that the flanking sequences of the DRE contribute to the binding affinity of the AhR/Arnt heterodimer to its endogenous enhancers and the function of AhR and HIF-1 can be differentially suppressed by the D2 inhibitory molecule.
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DOI:
--
发表时间:
2011
期刊:
Biochemical and Biophysical Research Communications - BBRC
影响因子:
--
作者:
M. Powis;T. Celius;J. Matthews
通讯作者:
J. Matthews
影响因子:
5.3
作者:
Dalei Wu;N. Potluri;Youngchang Kim;F. Rastinejad
通讯作者:
Dalei Wu;N. Potluri;Youngchang Kim;F. Rastinejad
DOI:
10.1073/pnas.90.18.8566
发表时间:
1993-09-15
影响因子:
11.1
作者:
DOLWICK, KM;SWANSON, HI;BRADFIELD, CA
通讯作者:
BRADFIELD, CA
影响因子:
3.6
作者:
Hao, Nan;Lee, Kian Leong;Whitelaw, Murray L.
通讯作者:
Whitelaw, Murray L.
影响因子:
5.8
作者:
Phuong Minh Nguyen;Wang, Depeng;Wang, Yu;Li, Yanjie;Uchizono, James A.;Chan, William K.
通讯作者:
Chan, William K.