Multiple transcription factors in 5'-flanking region of human polymeric Ig receptor control its basal expression.
Multiple transcription factors in 5'-flanking region of human polymeric Ig receptor control its basal expression.
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人聚合 Ig 受体 5 侧翼区域的多个转录因子控制其基础表达。
DOI:
10.1152/ajpgi.00420.2001
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发表时间:
2002
期刊:
影响因子:
--
通讯作者:
Martin,MartinG
中科院分区:
文献类型:
--
作者:
Solorzano-Vargas,RSergio;Wang,Jiafang;Jiang,Lingling;Tsai,HughV;Ontiveros,LuisO;Vazir,MuktaA;Aguilera,RenatoJ;Martin,MartinG
The polymeric Ig receptor (pIgR) is a critical component of the mucosal immune system and is expressed in largest amounts in the small intestine. In this study, we describe the initial characterization of the core promoter region of this gene. Expression of chimeric promoter-reporter constructs was supported in Caco-2 and HT-29 cells, andDNaseI footprint analysis revealed a large protein complex within the core promoter region. Site-directed mutagenesis experiments determined that elements within this region serve to either augment or repress basal activity of the humanpIgRpromoter. Band shift assays of overlapping oligonucleotides within the core promoter identified eight distinct complexes; the abundance of most complexes was enhanced in post-confluent cells. In summary, we report the characterization of the humanpIgRpromoter and the essential role that eight different nuclear complexes have in controlling basal expression of this gene in Caco-2 cells.
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影响因子:
29.4
作者:
K. Valnes;P. Brandtzaeg;K. Elgjo;R. Stave
通讯作者:
R. Stave
影响因子:
3.5
作者:
Martín,MG;Gutierrez,EM;Lam,JT;Li,TW;Wang,J
通讯作者:
Wang,J
DOI:
10.1152/ajpgi.1998.275.4.g778
发表时间:
1998
期刊:
The American journal of physiology
影响因子:
--
作者:
Martín,MG;Wang,J;Li,TW;Lam,JT;Gutierrez,EM;Solorzano-Vargas,RS;Tsai,AH
通讯作者:
Tsai,AH
DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Song,W;Apodaca,G;Mostov,K
通讯作者:
Mostov,K
影响因子:
29.4
作者:
W. Brown;K. Isobe;P. Nakane;B. Pacini
通讯作者:
B. Pacini