CREB, ATF, and AP-1 transcription factors regulate IFN-gamma secretion by human T cells in response to mycobacterial antigen.
CREB, ATF, and AP-1 transcription factors regulate IFN-gamma secretion by human T cells in response to mycobacterial antigen.
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CREB,ATF和AP-1转录因子调节人类T细胞对分枝杆菌抗原的分泌。
DOI:
10.4049/jimmunol.181.3.2056
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发表时间:
2008-08-01
期刊:
影响因子:
--
通讯作者:
Barnes PF
中科院分区:
文献类型:
--
作者:
Samten B;Townsend JC;Weis SE;Bhoumik A;Klucar P;Shams H;Barnes PF
IFN-γ production by T cells is pivotal for defense against many pathogens, and the proximal promoter of IFN-γ, −73 to −48 bp upstream of the transcription start site, is essential for its expression. However, transcriptional regulation mechanisms through this promoter in primary human cells remain unclear. We studied the effects of CREB/ATF and AP-1 transcription factors on the proximal promoter of IFN-γ in human T cells stimulated with M. tuberculosis. Using EMSA, supershift assays and promoter pulldown assays, we demonstrated that CREB, ATF-2 and c-Jun, but not cyclic AMP response element modulator, ATF-1 or c-Fos, bind to the proximal promoter of IFN-γ upon stimulation, and coimmunoprecipitation indicated the possibility of interaction among these transcription factors. Chromatin immunoprecipitation confirmed the recruitment of these transcription factors to the IFN-γ proximal promoter in live antigen-activated T cells. Inhibition of ATF-2 activity in T-cells with a dominant-negative ATF-2 peptide or with siRNA markedly reduced the expression of IFN-γ and decreased the expression of CREB and c-Jun. These findings suggest that CREB, ATF-2 and c-Jun are recruited to the IFN-γ proximal promoter, and upregulate IFN-γ transcription in response to microbial antigen. In addition, ATF-2 controls expression of CREB and c-Jun during T-cell activation.
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影响因子:
15.3
作者:
Carter, L L;Murphy, K M
通讯作者:
Murphy, K M
DOI:
10.1084/jem.169.1.59
发表时间:
1989-01-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Heinzel FP;Sadick MD;Holaday BJ;Coffman RL;Locksley RM
通讯作者:
Locksley RM
DOI:
10.1073/pnas.88.9.3720
发表时间:
1991-05-01
影响因子:
11.1
作者:
HAI, T;CURRAN, T
通讯作者:
CURRAN, T
DOI:
10.1073/pnas.83.18.6682
发表时间:
1986-09-01
影响因子:
11.1
作者:
MONTMINY, MR;SEVARINO, KA;GOODMAN, RH
通讯作者:
GOODMAN, RH
影响因子:
30.5
作者:
Avni, O;Lee, D;Rao, A
通讯作者:
Rao, A