A Peroxidase Peroxiredoxin 1-Specific Redox Regulation of the Novel FOXO3 microRNA Target let-7.
A Peroxidase Peroxiredoxin 1-Specific Redox Regulation of the Novel FOXO3 microRNA Target let-7.
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DOI:
10.1089/ars.2016.6871
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发表时间:
2018-01-01
影响因子:
6.6
通讯作者:
Neumann CA
中科院分区:
文献类型:
--
作者:
Hopkins BL;Nadler M;Skoko JJ;Bertomeu T;Pelosi A;Shafaei PM;Levine K;Schempf A;Pennarun B;Yang B;Datta D;Bucur O;Ndebele K;Oesterreich S;Yang D;Giulia Rizzo M;Khosravi-Far R;Neumann CA
Precision in redox signaling is attained through posttranslational protein modifications such as oxidation of protein thiols. The peroxidase peroxiredoxin 1 (PRDX1) regulates signal transduction through changes in thiol oxidation of its cysteines. We demonstrate here that PRDX1 is a binding partner for the tumor suppressive transcription factor FOXO3 that directly regulates the FOXO3 stress response. Heightened oxidative stress evokes formation of disulfide-bound heterotrimers linking dimeric PRDX1 to monomeric FOXO3. Absence of PRDX1 enhances FOXO3 nuclear localization and transcription that are dependent on the presence of Cys31 or Cys150 within FOXO3. Notably, FOXO3-T32 phosphorylation is constitutively enhanced in these mutants, but nuclear translocation of mutant FOXO3 is restored with PI3K inhibition. Here we show that on H2O2 exposure, transcription of tumor suppressive miRNAs let-7b and let-7c is regulated by FOXO3 or PRDX1 expression levels and that let-7c is a novel target for FOXO3. Conjointly, inhibition of let-7 microRNAs increases let-7-phenotypes in PRDX1-deficient breast cancer cells. Altogether, these data ascertain the existence of an H2O2-sensitive PRDX1-FOXO3 signaling axis that fine tunes FOXO3 activity toward the transcription of gene targets in response to oxidative stress. Antioxid. Redox Signal. 28, 62–77.
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DOI:
10.1111/j.1742-4658.2009.06985.x
发表时间:
2009-05
期刊:
The FEBS journal
影响因子:
--
作者:
Hall A;Karplus PA;Poole LB
通讯作者:
Poole LB
影响因子:
64.5
作者:
Brunet, A;Bonni, A;Greenberg, ME
通讯作者:
Greenberg, ME
影响因子:
14.9
作者:
Chen X;Ji Z;Webber A;Sharrocks AD
通讯作者:
Sharrocks AD
影响因子:
5.6
作者:
D'Ippolito E;Iorio MV
通讯作者:
Iorio MV
DOI:
10.1186/bcr3236
发表时间:
2012-07-27
期刊:
Breast cancer research : BCR
影响因子:
--
作者:
Fredlund E;Staaf J;Rantala JK;Kallioniemi O;Borg A;Ringnér M
通讯作者:
Ringnér M