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- Publisher Website: 10.1093/carcin/bgn167
- Scopus: eid_2-s2.0-51849123638
- PMID: 18632752
- WOS: WOS:000258961200010
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Article: Loss of MKP3 mediated by oxidative stress enhances tumorigenicity and chemoresistance of ovarian cancer cells
Title | Loss of MKP3 mediated by oxidative stress enhances tumorigenicity and chemoresistance of ovarian cancer cells | ||||||||
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Authors | |||||||||
Issue Date | 2008 | ||||||||
Publisher | Oxford University Press. The Journal's web site is located at http://carcin.oxfordjournals.org/ | ||||||||
Citation | Carcinogenesis, 2008, v. 29 n. 9, p. 1742-1750 How to Cite? | ||||||||
Abstract | The RAS-RAF-MEK-extracellular signal-regulated kinase (ERK) pathway plays a pivotal role in various cellular responses, including cellular growth, differentiation, survival and motility. Constitutive activation of the ERK pathway has been linked to the development and progression of human cancers. Here, we reported that mitogen-activated protein kinase phosphatase (MKP)-3, a negative regulator of ERK1/2, lost its expression particularly in the protein level, was significantly correlated with high ERK1/2 activity in primary human ovarian cancer cells using quantitative reverse transcription-polymerase chain reaction and western blot analyses. Intriguingly, the loss of MKP3 protein was associated with ubiquitination/proteosome degradation mediated by high intracellular reactive oxygen species (ROS) accumulation such as hydrogen peroxide in ovarian cancer cells. Functionally, short hairpin RNA knock down of endogenous MKP3 resulted in increased ERK1/2 activity, cell proliferation rate, anchorage-independent growth ability and resistance to cisplatin in ovarian cancer cells. Conversely, enforced expression of MKP3 in MKP3-deficient ovarian cancer cells significantly reduced ERK1/2 activity and inhibited cell proliferation, anchorage-independent growth ability and tumor development in nude mice. Furthermore, the enforced expression of MKP3 succeeded to sensitize ovarian cancer cells to cisplatin-induced apoptosis in vitro and in vivo. These results suggest a molecular mechanism by which the accumulation of ROS during ovarian cancer progression may cause the degradation of MKP3, which in turn leads to aberrant ERK1/2 activation and contributes to tumorigenicity and chemoresistance of human ovarian cancer cells. © The Author 2008. Published by Oxford University Press. All rights reserved. | ||||||||
Persistent Identifier | http://hdl.handle.net/10722/58182 | ||||||||
ISSN | 2021 Impact Factor: 4.741 2020 SCImago Journal Rankings: 1.688 | ||||||||
ISI Accession Number ID |
Funding Information: CRCG of the University of Hong Kong (10207308); Wong Check She Charitable Foundation; Program for Promoting the Establishment of Strategic Research Centers, Special Coordination Funds for Promoting Science and Technology, Ministry of Education, Culture, Sports, Science and Technology of Japan to T. F. | ||||||||
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Chan, DW | en_HK |
dc.contributor.author | Liu, VWS | en_HK |
dc.contributor.author | Tsao, GSW | en_HK |
dc.contributor.author | Yao, KM | en_HK |
dc.contributor.author | Furukawa, T | en_HK |
dc.contributor.author | Chan, KKL | en_HK |
dc.contributor.author | Ngan, HYS | en_HK |
dc.date.accessioned | 2010-05-31T03:25:21Z | - |
dc.date.available | 2010-05-31T03:25:21Z | - |
dc.date.issued | 2008 | en_HK |
dc.identifier.citation | Carcinogenesis, 2008, v. 29 n. 9, p. 1742-1750 | en_HK |
dc.identifier.issn | 0143-3334 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/58182 | - |
dc.description.abstract | The RAS-RAF-MEK-extracellular signal-regulated kinase (ERK) pathway plays a pivotal role in various cellular responses, including cellular growth, differentiation, survival and motility. Constitutive activation of the ERK pathway has been linked to the development and progression of human cancers. Here, we reported that mitogen-activated protein kinase phosphatase (MKP)-3, a negative regulator of ERK1/2, lost its expression particularly in the protein level, was significantly correlated with high ERK1/2 activity in primary human ovarian cancer cells using quantitative reverse transcription-polymerase chain reaction and western blot analyses. Intriguingly, the loss of MKP3 protein was associated with ubiquitination/proteosome degradation mediated by high intracellular reactive oxygen species (ROS) accumulation such as hydrogen peroxide in ovarian cancer cells. Functionally, short hairpin RNA knock down of endogenous MKP3 resulted in increased ERK1/2 activity, cell proliferation rate, anchorage-independent growth ability and resistance to cisplatin in ovarian cancer cells. Conversely, enforced expression of MKP3 in MKP3-deficient ovarian cancer cells significantly reduced ERK1/2 activity and inhibited cell proliferation, anchorage-independent growth ability and tumor development in nude mice. Furthermore, the enforced expression of MKP3 succeeded to sensitize ovarian cancer cells to cisplatin-induced apoptosis in vitro and in vivo. These results suggest a molecular mechanism by which the accumulation of ROS during ovarian cancer progression may cause the degradation of MKP3, which in turn leads to aberrant ERK1/2 activation and contributes to tumorigenicity and chemoresistance of human ovarian cancer cells. © The Author 2008. Published by Oxford University Press. All rights reserved. | en_HK |
dc.language | eng | en_HK |
dc.publisher | Oxford University Press. The Journal's web site is located at http://carcin.oxfordjournals.org/ | en_HK |
dc.relation.ispartof | Carcinogenesis | en_HK |
dc.rights | Carcinogenesis. Copyright © Lippincott Williams & Wilkins. | en_HK |
dc.subject.mesh | Animals | en_HK |
dc.subject.mesh | Apoptosis - drug effects - physiology | en_HK |
dc.subject.mesh | Blotting, Western | en_HK |
dc.subject.mesh | Cell Adhesion - physiology | en_HK |
dc.subject.mesh | Cell Proliferation - drug effects | en_HK |
dc.subject.mesh | Cisplatin - pharmacology | en_HK |
dc.subject.mesh | Disease Progression | en_HK |
dc.subject.mesh | Drug Resistance, Neoplasm | en_HK |
dc.subject.mesh | Dual Specificity Phosphatase 6 - antagonists & inhibitors - genetics - metabolism | en_HK |
dc.subject.mesh | Female | en_HK |
dc.subject.mesh | Humans | en_HK |
dc.subject.mesh | Hydrogen Peroxide - metabolism | en_HK |
dc.subject.mesh | Mice | en_HK |
dc.subject.mesh | Mitogen-Activated Protein Kinase 1 - antagonists & inhibitors - metabolism | en_HK |
dc.subject.mesh | Mitogen-Activated Protein Kinase 3 - antagonists & inhibitors - metabolism | en_HK |
dc.subject.mesh | Ovarian Neoplasms - drug therapy - genetics - pathology | en_HK |
dc.subject.mesh | Oxidative Stress - physiology | en_HK |
dc.subject.mesh | Phosphorylation | en_HK |
dc.subject.mesh | Promoter Regions, Genetic | en_HK |
dc.subject.mesh | RNA, Messenger - antagonists & inhibitors - genetics - metabolism | en_HK |
dc.subject.mesh | Reverse Transcriptase Polymerase Chain Reaction | en_HK |
dc.subject.mesh | Signal Transduction - drug effects | en_HK |
dc.subject.mesh | Tumor Cells, Cultured | en_HK |
dc.subject.mesh | Ubiquitin - metabolism | en_HK |
dc.title | Loss of MKP3 mediated by oxidative stress enhances tumorigenicity and chemoresistance of ovarian cancer cells | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0147-4006&volume=29&issue=9&spage=1742&epage=1750&date=2008&atitle=Loss+of+MKP3+mediated+by+oxidative+stress+enhances+tumorigenicity+and+chemoresistance+of+ovarian+cancer+cells | en_HK |
dc.identifier.email | Chan, DW: dwchan@hku.hk | en_HK |
dc.identifier.email | Liu, VWS: vwsliu@hkusua.hku.hk | en_HK |
dc.identifier.email | Tsao, GSW: gswtsao@hku.hk | en_HK |
dc.identifier.email | Yao, KM: kmyao@hku.hk | en_HK |
dc.identifier.email | Chan, KKL: kklchan@hkucc.hku.hk | en_HK |
dc.identifier.email | Ngan, HYS: hysngan@hkucc.hku.hk | en_HK |
dc.identifier.authority | Chan, DW=rp00543 | en_HK |
dc.identifier.authority | Liu, VWS=rp00341 | en_HK |
dc.identifier.authority | Tsao, GSW=rp00399 | en_HK |
dc.identifier.authority | Yao, KM=rp00344 | en_HK |
dc.identifier.authority | Chan, KKL=rp00499 | en_HK |
dc.identifier.authority | Ngan, HYS=rp00346 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1093/carcin/bgn167 | en_HK |
dc.identifier.pmid | 18632752 | - |
dc.identifier.scopus | eid_2-s2.0-51849123638 | en_HK |
dc.identifier.hkuros | 145619 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-51849123638&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 29 | en_HK |
dc.identifier.issue | 9 | en_HK |
dc.identifier.spage | 1742 | en_HK |
dc.identifier.epage | 1750 | en_HK |
dc.identifier.eissn | 1460-2180 | - |
dc.identifier.isi | WOS:000258961200010 | - |
dc.publisher.place | United Kingdom | en_HK |
dc.identifier.scopusauthorid | Chan, DW=26533900600 | en_HK |
dc.identifier.scopusauthorid | Liu, VWS=7006405113 | en_HK |
dc.identifier.scopusauthorid | Tsao, GSW=7102813116 | en_HK |
dc.identifier.scopusauthorid | Yao, KM=7403234578 | en_HK |
dc.identifier.scopusauthorid | Furukawa, T=35392252000 | en_HK |
dc.identifier.scopusauthorid | Chan, KKL=8655666700 | en_HK |
dc.identifier.scopusauthorid | Ngan, HYS=34571944100 | en_HK |
dc.identifier.issnl | 0143-3334 | - |