Transcriptional regulation of the human polymeric immunoglobulin receptor gene by interferon-gamma.
Transcriptional regulation of the human polymeric immunoglobulin receptor gene by interferon-gamma.
复制标题
干扰素-γ对人聚合免疫球蛋白受体基因的转录调节。
DOI:
10.1016/s0161-5890(96)00079-x
复制
发表时间:
1997
影响因子:
3.6
通讯作者:
Kaetzel,CS
中科院分区:
文献类型:
--
作者:
Piskurich,JF;Youngman,KR;Phillips,KM;Hempen,PM;Blanchard,MH;France,JA;Kaetzel,CS
IgA is transported into external secretions by the polymeric Ig receptor (pIgR). Interferon-γ (IFN-γ), a major regulator of pIgR expression, has been shown to increase pIgR mRNA levels in HT-29 human colon carcinoma cells. To determine the molecular mechanisms of pIgR regulation, genomic DNA containing the 5′-flanking region of the human pIgR gene was isolated and a single start site of transcription in human intestinal epithelial cells was identified. Using chimeric reporter plasmids containing flanking regions of the pIgR gene, a segment of the pIgR promoter which is necessary and sufficient for induction of transcription by IFN-γ in HT-29 cells was identified. Significantly, the pIgR promoter contains three motifs homologous to the interferon-stimulated response element (ISRE), two in the 5′-flanking region and one in exon 1 of the pIgR gene. The upstream ISREs bind nuclear protein(s) which are constitutively expressed by HT-29 cells, while the exon 1 ISRE binds interferon regulatory factor-1 (IRF-1), following stimulation with IFN-γ. Furthermore, induction of the IRF-1 promoter by IFN-γ correlates with induction of the pIgR promoter by IFN-γ. It has previously been demonstrated that induction of pIgR mRNA by IFN-γ requires de novo protein synthesis. It is now shown that IRF-1 is not detected in nuclear extracts from HT-29 cells stimulated with IFN-γ in the presence of cycloheximide, suggesting that de novo synthesis of IRF-1 is required for induction of pIgR transcription by IFN-γ.
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DOI:
--
发表时间:
1993
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Thomas,DJ;Lublin,DM
通讯作者:
Lublin,DM
影响因子:
7.5
作者:
Ke Shuai
通讯作者:
Ke Shuai
DOI:
--
发表时间:
1993
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Brown,AM;Wright,KL;Ting,JP
通讯作者:
Ting,JP
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
P. Brandtzaeg;P. Krajči;M. Lamm;C. Kaetzel
通讯作者:
C. Kaetzel
影响因子:
64.8
作者:
R. Friedman;G. Stark
通讯作者:
G. Stark