Suppression of mitochondrial complex I influences cell metastatic properties

Despite the fact that mitochondrial dysfunction has an important role in tumorigenesis and metastasis, the underlying mechanism remains to be elucidated. Mitochondrial Complex I (NADH:ubiquinone oxidoreductase) is the first and the largest protein complex of the mitochondrial electron-transport chai...

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Veröffentlicht in:PloS one 2013-04, Vol.8 (4), p.e61677-e61677
Hauptverfasser: He, Xuelian, Zhou, Aifen, Lu, Hao, Chen, Yong, Huang, Guochang, Yue, Xin, Zhao, Peiwei, Wu, Yanxiang
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Zhou, Aifen
Lu, Hao
Chen, Yong
Huang, Guochang
Yue, Xin
Zhao, Peiwei
Wu, Yanxiang
description Despite the fact that mitochondrial dysfunction has an important role in tumorigenesis and metastasis, the underlying mechanism remains to be elucidated. Mitochondrial Complex I (NADH:ubiquinone oxidoreductase) is the first and the largest protein complex of the mitochondrial electron-transport chain (ETC),which has an essential role in maintaining mitochondrial function and integrity. In this study, we separately knocked down two subunits of mitochondrial complex I, GRIM-19 or NDUFS3, and investigated their effects on metastatic behaviors and explored the possible mechanisms. Our data showed that stable down-modulation of GRIM-19 or NDUFS3 decreased complex I activity and reactive oxygen species (ROS) production; led to enhanced cell adhesion, migration, invasion, and spheroid formation; and influenced the expressions of extracellular matrix (ECM) molecules and its related proteins. We also observed that the expressions of GRIM-19, NDUFS3, and ECM elements were correlated with invasive capabilities of breast cancer cell lines. These results suggest that inhibition of complex I affects metastatic properties of cancer cells, and mitochondrial ROS might play a crucial role in these processes by regulating ECM.
doi_str_mv 10.1371/journal.pone.0061677
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Mitochondrial Complex I (NADH:ubiquinone oxidoreductase) is the first and the largest protein complex of the mitochondrial electron-transport chain (ETC),which has an essential role in maintaining mitochondrial function and integrity. In this study, we separately knocked down two subunits of mitochondrial complex I, GRIM-19 or NDUFS3, and investigated their effects on metastatic behaviors and explored the possible mechanisms. Our data showed that stable down-modulation of GRIM-19 or NDUFS3 decreased complex I activity and reactive oxygen species (ROS) production; led to enhanced cell adhesion, migration, invasion, and spheroid formation; and influenced the expressions of extracellular matrix (ECM) molecules and its related proteins. We also observed that the expressions of GRIM-19, NDUFS3, and ECM elements were correlated with invasive capabilities of breast cancer cell lines. These results suggest that inhibition of complex I affects metastatic properties of cancer cells, and mitochondrial ROS might play a crucial role in these processes by regulating ECM.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0061677</identifier><identifier>PMID: 23630608</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Antigens, CD - metabolism ; Apoptosis ; Apoptosis Regulatory Proteins - genetics ; Apoptosis Regulatory Proteins - metabolism ; Biology ; Breast cancer ; Cadherins - metabolism ; Cancer ; Cancer metastasis ; Cell adhesion ; Cell adhesion &amp; migration ; Cell Adhesion Molecules - metabolism ; Cell Line, Tumor ; Cell migration ; Cell Movement ; Cell Proliferation ; Cell Shape ; Development and progression ; Electron transport ; Electron transport chain ; Electron Transport Complex I - genetics ; Electron Transport Complex I - metabolism ; Epithelial-Mesenchymal Transition ; Extracellular matrix ; Extracellular Matrix - metabolism ; Fibronectins - genetics ; Fibronectins - metabolism ; Gene Expression ; Gene Knockdown Techniques ; HeLa Cells ; Humans ; Hypoxia-Inducible Factor 1, alpha Subunit - metabolism ; Integrins - metabolism ; Invasiveness ; Laboratories ; Medical research ; Medicine ; Metastases ; Metastasis ; Mitochondria ; Mitochondria - enzymology ; Mitochondrial DNA ; Morphology ; NADH ; NADH Dehydrogenase - genetics ; NADH Dehydrogenase - metabolism ; NADH, NADPH Oxidoreductases - genetics ; NADH, NADPH Oxidoreductases - metabolism ; NADH-ubiquinone oxidoreductase ; Neoplasm Metastasis ; Nicotinamide adenine dinucleotide ; Oxidation ; Oxidoreductase ; Oxygen ; Phenotype ; Phosphorylation ; Proteins ; Reactive oxygen species ; Reactive Oxygen Species - metabolism ; RNA, Small Interfering - genetics ; Science ; Spheroids, Cellular ; Tumor cell lines ; Tumorigenesis ; Ubiquinone ; Ubiquinone oxidoreductase</subject><ispartof>PloS one, 2013-04, Vol.8 (4), p.e61677-e61677</ispartof><rights>COPYRIGHT 2013 Public Library of Science</rights><rights>2013 He et al. 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Mitochondrial Complex I (NADH:ubiquinone oxidoreductase) is the first and the largest protein complex of the mitochondrial electron-transport chain (ETC),which has an essential role in maintaining mitochondrial function and integrity. In this study, we separately knocked down two subunits of mitochondrial complex I, GRIM-19 or NDUFS3, and investigated their effects on metastatic behaviors and explored the possible mechanisms. Our data showed that stable down-modulation of GRIM-19 or NDUFS3 decreased complex I activity and reactive oxygen species (ROS) production; led to enhanced cell adhesion, migration, invasion, and spheroid formation; and influenced the expressions of extracellular matrix (ECM) molecules and its related proteins. We also observed that the expressions of GRIM-19, NDUFS3, and ECM elements were correlated with invasive capabilities of breast cancer cell lines. 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>He, Xuelian</au><au>Zhou, Aifen</au><au>Lu, Hao</au><au>Chen, Yong</au><au>Huang, Guochang</au><au>Yue, Xin</au><au>Zhao, Peiwei</au><au>Wu, Yanxiang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Suppression of mitochondrial complex I influences cell metastatic properties</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2013-04-22</date><risdate>2013</risdate><volume>8</volume><issue>4</issue><spage>e61677</spage><epage>e61677</epage><pages>e61677-e61677</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Despite the fact that mitochondrial dysfunction has an important role in tumorigenesis and metastasis, the underlying mechanism remains to be elucidated. Mitochondrial Complex I (NADH:ubiquinone oxidoreductase) is the first and the largest protein complex of the mitochondrial electron-transport chain (ETC),which has an essential role in maintaining mitochondrial function and integrity. In this study, we separately knocked down two subunits of mitochondrial complex I, GRIM-19 or NDUFS3, and investigated their effects on metastatic behaviors and explored the possible mechanisms. Our data showed that stable down-modulation of GRIM-19 or NDUFS3 decreased complex I activity and reactive oxygen species (ROS) production; led to enhanced cell adhesion, migration, invasion, and spheroid formation; and influenced the expressions of extracellular matrix (ECM) molecules and its related proteins. We also observed that the expressions of GRIM-19, NDUFS3, and ECM elements were correlated with invasive capabilities of breast cancer cell lines. These results suggest that inhibition of complex I affects metastatic properties of cancer cells, and mitochondrial ROS might play a crucial role in these processes by regulating ECM.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>23630608</pmid><doi>10.1371/journal.pone.0061677</doi><tpages>e61677</tpages><oa>free_for_read</oa></addata></record>
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subjects Antigens, CD - metabolism
Apoptosis
Apoptosis Regulatory Proteins - genetics
Apoptosis Regulatory Proteins - metabolism
Biology
Breast cancer
Cadherins - metabolism
Cancer
Cancer metastasis
Cell adhesion
Cell adhesion & migration
Cell Adhesion Molecules - metabolism
Cell Line, Tumor
Cell migration
Cell Movement
Cell Proliferation
Cell Shape
Development and progression
Electron transport
Electron transport chain
Electron Transport Complex I - genetics
Electron Transport Complex I - metabolism
Epithelial-Mesenchymal Transition
Extracellular matrix
Extracellular Matrix - metabolism
Fibronectins - genetics
Fibronectins - metabolism
Gene Expression
Gene Knockdown Techniques
HeLa Cells
Humans
Hypoxia-Inducible Factor 1, alpha Subunit - metabolism
Integrins - metabolism
Invasiveness
Laboratories
Medical research
Medicine
Metastases
Metastasis
Mitochondria
Mitochondria - enzymology
Mitochondrial DNA
Morphology
NADH
NADH Dehydrogenase - genetics
NADH Dehydrogenase - metabolism
NADH, NADPH Oxidoreductases - genetics
NADH, NADPH Oxidoreductases - metabolism
NADH-ubiquinone oxidoreductase
Neoplasm Metastasis
Nicotinamide adenine dinucleotide
Oxidation
Oxidoreductase
Oxygen
Phenotype
Phosphorylation
Proteins
Reactive oxygen species
Reactive Oxygen Species - metabolism
RNA, Small Interfering - genetics
Science
Spheroids, Cellular
Tumor cell lines
Tumorigenesis
Ubiquinone
Ubiquinone oxidoreductase
title Suppression of mitochondrial complex I influences cell metastatic properties
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