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Selective Association of Peroxiredoxin 1 with Genomic DNA and COX-2 Upstream Promoter Elements in Estrogen Receptor Negative Breast Cancer Cells
In a search for proteins differentially cross-linked to DNA by cisplatin or formaldehyde in normal breast epithelial and breast cancer cell lines, we identified peroxiredoxin 1 (PRDX1) as a protein preferentially cross-linked to DNA in estrogen receptor negative (ER−) MDA-MB-231 but not in estrogen...
Autores principales: | , , , , |
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Formato: | Texto |
Lenguaje: | English |
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The American Society for Cell Biology
2010
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2929992/ https://www.ncbi.nlm.nih.gov/pubmed/20631257 http://dx.doi.org/10.1091/mbc.E10-02-0160 |
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author | Wang, Xuemei He, Shihua Sun, Jian-Min Delcuve, Geneviève P. Davie, James R. |
author_facet | Wang, Xuemei He, Shihua Sun, Jian-Min Delcuve, Geneviève P. Davie, James R. |
author_sort | Wang, Xuemei |
collection | PubMed |
description | In a search for proteins differentially cross-linked to DNA by cisplatin or formaldehyde in normal breast epithelial and breast cancer cell lines, we identified peroxiredoxin 1 (PRDX1) as a protein preferentially cross-linked to DNA in estrogen receptor negative (ER−) MDA-MB-231 but not in estrogen receptor positive (ER+) MCF7 breast cancer cells. Indirect immunofluorescence microscopic analyses showed that PRDX1 was located in the cytoplasm and nucleus of normal and breast cancer cells, with nuclear PRDX1 associated with promyelocytic leukemia protein bodies. We demonstrated that PRDX1 association with the transcription factor nuclear factor-κB (NF-κB) in MDA-MB-231 but not in MCF7 cells contributed to PRDX1-selective recruitment to MDA-MB-231 genomic DNA. Furthermore, PRDX1 was associated with the cyclooxygenase (COX)-2 upstream promoter region at sites occupied by NF-κB in ER− but not in ER+ breast cancer cells. PRDX1 knockdown attenuated COX-2 expression by reducing NF-κB occupancy at its upstream promoter element in MDA-MB-231 but not in MCF7 cells. A phosphorylated form of PRDX1 was only present in ER− breast cancer cells. Because PRDX1 phosphorylation is known to inhibit its peroxidase activity and to promote PRDX1 oligomerization, we propose that PRDX1 acts as a chaperone to enhance the transactivation potential of NF-κB in ER− breast cancer cells. |
format | Text |
id | pubmed-2929992 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | The American Society for Cell Biology |
record_format | MEDLINE/PubMed |
spelling | pubmed-29299922010-11-16 Selective Association of Peroxiredoxin 1 with Genomic DNA and COX-2 Upstream Promoter Elements in Estrogen Receptor Negative Breast Cancer Cells Wang, Xuemei He, Shihua Sun, Jian-Min Delcuve, Geneviève P. Davie, James R. Mol Biol Cell Articles In a search for proteins differentially cross-linked to DNA by cisplatin or formaldehyde in normal breast epithelial and breast cancer cell lines, we identified peroxiredoxin 1 (PRDX1) as a protein preferentially cross-linked to DNA in estrogen receptor negative (ER−) MDA-MB-231 but not in estrogen receptor positive (ER+) MCF7 breast cancer cells. Indirect immunofluorescence microscopic analyses showed that PRDX1 was located in the cytoplasm and nucleus of normal and breast cancer cells, with nuclear PRDX1 associated with promyelocytic leukemia protein bodies. We demonstrated that PRDX1 association with the transcription factor nuclear factor-κB (NF-κB) in MDA-MB-231 but not in MCF7 cells contributed to PRDX1-selective recruitment to MDA-MB-231 genomic DNA. Furthermore, PRDX1 was associated with the cyclooxygenase (COX)-2 upstream promoter region at sites occupied by NF-κB in ER− but not in ER+ breast cancer cells. PRDX1 knockdown attenuated COX-2 expression by reducing NF-κB occupancy at its upstream promoter element in MDA-MB-231 but not in MCF7 cells. A phosphorylated form of PRDX1 was only present in ER− breast cancer cells. Because PRDX1 phosphorylation is known to inhibit its peroxidase activity and to promote PRDX1 oligomerization, we propose that PRDX1 acts as a chaperone to enhance the transactivation potential of NF-κB in ER− breast cancer cells. The American Society for Cell Biology 2010-09-01 /pmc/articles/PMC2929992/ /pubmed/20631257 http://dx.doi.org/10.1091/mbc.E10-02-0160 Text en © 2010 by The American Society for Cell Biology This article is distributed by The American Society for Cell Biology under license from the author(s). Two months after publication it is available to the public under an Attribution–Noncommercial–Share Alike 3.0 Unported Creative Commons License (http://creativecommons.org/licenses/by-nc-sa/3.0). |
spellingShingle | Articles Wang, Xuemei He, Shihua Sun, Jian-Min Delcuve, Geneviève P. Davie, James R. Selective Association of Peroxiredoxin 1 with Genomic DNA and COX-2 Upstream Promoter Elements in Estrogen Receptor Negative Breast Cancer Cells |
title | Selective Association of Peroxiredoxin 1 with Genomic DNA and COX-2 Upstream Promoter Elements in Estrogen Receptor Negative Breast Cancer Cells |
title_full | Selective Association of Peroxiredoxin 1 with Genomic DNA and COX-2 Upstream Promoter Elements in Estrogen Receptor Negative Breast Cancer Cells |
title_fullStr | Selective Association of Peroxiredoxin 1 with Genomic DNA and COX-2 Upstream Promoter Elements in Estrogen Receptor Negative Breast Cancer Cells |
title_full_unstemmed | Selective Association of Peroxiredoxin 1 with Genomic DNA and COX-2 Upstream Promoter Elements in Estrogen Receptor Negative Breast Cancer Cells |
title_short | Selective Association of Peroxiredoxin 1 with Genomic DNA and COX-2 Upstream Promoter Elements in Estrogen Receptor Negative Breast Cancer Cells |
title_sort | selective association of peroxiredoxin 1 with genomic dna and cox-2 upstream promoter elements in estrogen receptor negative breast cancer cells |
topic | Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2929992/ https://www.ncbi.nlm.nih.gov/pubmed/20631257 http://dx.doi.org/10.1091/mbc.E10-02-0160 |
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