YY1-binding sites provide central switch functions in the PARP-1 gene expression network.
YY1-binding sites provide central switch functions in the PARP-1 gene expression network.
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YY1结合位点在PARP-1基因表达网络中提供中央开关功能。
DOI:
10.1371/journal.pone.0044125
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Vidaković M
中科院分区:
文献类型:
--
作者:
Doetsch M;Gluch A;Poznanović G;Bode J;Vidaković M
Evidence is presented for the involvement of the interplay between transcription factor Yin Yang 1 (YY1) and poly(ADP-ribose) polymerase-1 (PARP-1) in the regulation of mouse PARP-1 gene (muPARP-1) promoter activity. We identified potential YY1 binding motifs (BM) at seven positions in the muPARP-1 core-promoter (−574/+200). Binding of YY1 was observed by the electrophoretic supershift assay using anti-YY1 antibody and linearized or supercoiled forms of plasmids bearing the core promoter, as well as with 30 bp oligonucleotide probes containing the individual YY1 binding motifs and four muPARP-1 promoter fragments. We detected YY1 binding to BM1 (−587/−558), BM4 (−348/−319) and a very prominent association with BM7 (+86/+115). Inspection of BM7 reveals overlap of the muPARP-1 translation start site with the Kozak sequence and YY1 and PARP-1 recognition sites. Site-directed mutagenesis of the YY1 and PARP-1 core motifs eliminated protein binding and showed that YY1 mediates PARP-1 binding next to the Kozak sequence. Transfection experiments with a reporter gene under the control of the muPARP-1 promoter revealed that YY1 binding to BM1 and BM4 independently repressed the promoter. Mutations at these sites prevented YY1 binding, allowing for increased reporter gene activity. In PARP-1 knockout cells subjected to PARP-1 overexpression, effects similar to YY1 became apparent; over expression of YY1 and PARP-1 revealed their synergistic action. Together with our previous findings these results expand the PARP-1 autoregulatory loop principle by YY1 actions, implying rigid limitation of muPARP-1 expression. The joint actions of PARP-1 and YY1 emerge as important contributions to cell homeostasis.
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DOI:
10.1186/1478-811x-8-31
发表时间:
2010-12-22
期刊:
Cell communication and signaling : CCS
影响因子:
--
作者:
Chaitanya GV;Steven AJ;Babu PP
通讯作者:
Babu PP
DOI:
10.1074/jbc.m801170200
发表时间:
2008-08-08
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Guastafierro T;Cecchinelli B;Zampieri M;Reale A;Riggio G;Sthandier O;Zupi G;Calabrese L;Caiafa P
通讯作者:
Caiafa P
影响因子:
5.8
作者:
Duprez, Linde;Wirawan, Ellen;Vandenabeele, Peter
通讯作者:
Vandenabeele, Peter
影响因子:
6.7
作者:
Chevanne, M;Caldini, R;Del Rosso, M
通讯作者:
Del Rosso, M
DOI:
10.1016/0921-8777(89)90012-8
发表时间:
1989-09-01
期刊:
MUTATION RESEARCH
影响因子:
--
作者:
ALVAREZGONZALEZ, R;ALTHAUS, FR
通讯作者:
ALTHAUS, FR