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Aberrant expression of redox protein Ape1 in colon cancer stem cells
Ape1 is an important redox protein, essential for specific cytokine-induced signal transduction. Ape1 signaling is also important in regulating the growth of cancer cells, including colon cancer cells. The present study investigated whether Ape1 signaling plays a role in the regulation of colon canc...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
D.A. Spandidos
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3961307/ https://www.ncbi.nlm.nih.gov/pubmed/24944672 http://dx.doi.org/10.3892/ol.2014.1864 |
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author | LOU, DEBAO ZHU, LINA DING, HUAWEI DAI, HAI-YAN ZOU, GANG-MING |
author_facet | LOU, DEBAO ZHU, LINA DING, HUAWEI DAI, HAI-YAN ZOU, GANG-MING |
author_sort | LOU, DEBAO |
collection | PubMed |
description | Ape1 is an important redox protein, essential for specific cytokine-induced signal transduction. Ape1 signaling is also important in regulating the growth of cancer cells, including colon cancer cells. The present study investigated whether Ape1 signaling plays a role in the regulation of colon cancer stem cell (CCSC) growth. The results showed that Ape1 was aberrantly expressed in CCSCs, as determined by quantitative (q)PCR assay. A laser confocal microscopy assay demonstrated that the Ape1 protein was mainly distributed in the nuclei, but not the cytoplasm, of the CSCs. Treatment of CCSCs with Ape1 redox inhibitor (E3330) significantly affected growth in vitro. In colon cancer xenograft mice, in vivo administration of E3330 enhanced tumor responses to the chemotherapeutic drug, 5-fluorouracil (5-FU). Furthermore, the combination of E3330 and 5-FU evidently increased the cytotoxicity of 5-FU in CSC growth. In the qPCR assay, the CCSCs were demonstrated to express the dominant ATP-binding cassette sub-family G member 2 (ABC-G2), but not the multidrug resistance 1, genes. Thus, we hypothesized that drug resistance in CCSCs is mediated by ABC-G2. Since CSCs are involved in cancer metastasis, the Ape1 inhibitor may be a potential agent in the inhibition of colon cancer growth and metastasis. |
format | Online Article Text |
id | pubmed-3961307 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | D.A. Spandidos |
record_format | MEDLINE/PubMed |
spelling | pubmed-39613072014-06-18 Aberrant expression of redox protein Ape1 in colon cancer stem cells LOU, DEBAO ZHU, LINA DING, HUAWEI DAI, HAI-YAN ZOU, GANG-MING Oncol Lett Articles Ape1 is an important redox protein, essential for specific cytokine-induced signal transduction. Ape1 signaling is also important in regulating the growth of cancer cells, including colon cancer cells. The present study investigated whether Ape1 signaling plays a role in the regulation of colon cancer stem cell (CCSC) growth. The results showed that Ape1 was aberrantly expressed in CCSCs, as determined by quantitative (q)PCR assay. A laser confocal microscopy assay demonstrated that the Ape1 protein was mainly distributed in the nuclei, but not the cytoplasm, of the CSCs. Treatment of CCSCs with Ape1 redox inhibitor (E3330) significantly affected growth in vitro. In colon cancer xenograft mice, in vivo administration of E3330 enhanced tumor responses to the chemotherapeutic drug, 5-fluorouracil (5-FU). Furthermore, the combination of E3330 and 5-FU evidently increased the cytotoxicity of 5-FU in CSC growth. In the qPCR assay, the CCSCs were demonstrated to express the dominant ATP-binding cassette sub-family G member 2 (ABC-G2), but not the multidrug resistance 1, genes. Thus, we hypothesized that drug resistance in CCSCs is mediated by ABC-G2. Since CSCs are involved in cancer metastasis, the Ape1 inhibitor may be a potential agent in the inhibition of colon cancer growth and metastasis. D.A. Spandidos 2014-04 2014-02-10 /pmc/articles/PMC3961307/ /pubmed/24944672 http://dx.doi.org/10.3892/ol.2014.1864 Text en Copyright © 2014, Spandidos Publications http://creativecommons.org/licenses/by/3.0 This is an open-access article licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. The article may be redistributed, reproduced, and reused for non-commercial purposes, provided the original source is properly cited. |
spellingShingle | Articles LOU, DEBAO ZHU, LINA DING, HUAWEI DAI, HAI-YAN ZOU, GANG-MING Aberrant expression of redox protein Ape1 in colon cancer stem cells |
title | Aberrant expression of redox protein Ape1 in colon cancer stem cells |
title_full | Aberrant expression of redox protein Ape1 in colon cancer stem cells |
title_fullStr | Aberrant expression of redox protein Ape1 in colon cancer stem cells |
title_full_unstemmed | Aberrant expression of redox protein Ape1 in colon cancer stem cells |
title_short | Aberrant expression of redox protein Ape1 in colon cancer stem cells |
title_sort | aberrant expression of redox protein ape1 in colon cancer stem cells |
topic | Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3961307/ https://www.ncbi.nlm.nih.gov/pubmed/24944672 http://dx.doi.org/10.3892/ol.2014.1864 |
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