Effect of omega-3 polyunsaturated fatty acids on the cytoskeleton: an open-label intervention study

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Original languageEnglish
Article number4
Number of pages9
JournalLipids in health and disease
Volume14
Issue number1
Publication statusPublished - 14 Feb 2015

Abstract

BACKGROUND: Omega-3 polyunsaturated fatty acids (n-3 PUFAs) show beneficial effects on cardiovascular health and cognitive functions, but the underlying molecular mechanisms are not completely understood. Because of the fact that cytoskeleton dynamics affect almost every cellular process, the regulation of cytoskeletal dynamics could be a new pathway by which n-3 PUFAs exert their effects on cellular level.

METHODS: A 12-week open-label intervention study with 12 healthy men was conducted to determine the effects of 2.7 g/d n-3 PUFA on changes in mRNA expression of cytoskeleton-associated genes by quantitative real-time PCR in whole blood. Furthermore, the actin content in red blood cells was analyzed by immunofluorescence imaging.

RESULTS: N-3 PUFA supplementation resulted in a significant down-regulation of cytoskeleton-associated genes, in particular three GTPases (RAC1, RHOA, CDC42), three kinases (ROCK1, PAK2, LIMK), two Wiskott-Aldrich syndrome proteins (WASL, WASF2) as well as actin related protein 2/3 complex (ARPC2, ARPC3) and cofilin (CFL1). Variability in F-actin content between subjects was high; reduced actin content was only reduced within group evaluation.

CONCLUSIONS: Reduced cytoskeleton-associated gene expression after n-3 PUFA supplementation suggests that regulation of cytoskeleton dynamics might be an additional way by which n-3 PUFAs exert their cellular effects. Concerning F-actin, this analysis did not reveal unmistakable results impeding a generalized conclusion.

Keywords

    Actin-Related Protein 2-3 Complex/drug effects, Adult, Cofilin 1/drug effects, Cytoskeleton/drug effects, Down-Regulation/drug effects, Fatty Acids, Omega-3/pharmacology, Fluorescent Antibody Technique, Gene Expression/drug effects, Humans, Lim Kinases/drug effects, Male, Real-Time Polymerase Chain Reaction, Wiskott-Aldrich Syndrome Protein Family/drug effects, Wiskott-Aldrich Syndrome Protein, Neuronal/drug effects, cdc42 GTP-Binding Protein/drug effects, p21-Activated Kinases/drug effects, rac1 GTP-Binding Protein/drug effects, rho-Associated Kinases/drug effects, rhoA GTP-Binding Protein/drug effects, Omega-3 index, Red blood cells, Gene-expression, GTPases, n-3 PUFA, F-actin, Cytoskeleton

ASJC Scopus subject areas

Sustainable Development Goals

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Effect of omega-3 polyunsaturated fatty acids on the cytoskeleton: an open-label intervention study. / Schmidt, Simone; Willers, Janina; Riecker, Sabine et al.
In: Lipids in health and disease, Vol. 14, No. 1, 4, 14.02.2015.

Research output: Contribution to journalArticleResearchpeer review

Schmidt, Simone ; Willers, Janina ; Riecker, Sabine et al. / Effect of omega-3 polyunsaturated fatty acids on the cytoskeleton : an open-label intervention study. In: Lipids in health and disease. 2015 ; Vol. 14, No. 1.
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title = "Effect of omega-3 polyunsaturated fatty acids on the cytoskeleton: an open-label intervention study",
abstract = "BACKGROUND: Omega-3 polyunsaturated fatty acids (n-3 PUFAs) show beneficial effects on cardiovascular health and cognitive functions, but the underlying molecular mechanisms are not completely understood. Because of the fact that cytoskeleton dynamics affect almost every cellular process, the regulation of cytoskeletal dynamics could be a new pathway by which n-3 PUFAs exert their effects on cellular level.METHODS: A 12-week open-label intervention study with 12 healthy men was conducted to determine the effects of 2.7 g/d n-3 PUFA on changes in mRNA expression of cytoskeleton-associated genes by quantitative real-time PCR in whole blood. Furthermore, the actin content in red blood cells was analyzed by immunofluorescence imaging.RESULTS: N-3 PUFA supplementation resulted in a significant down-regulation of cytoskeleton-associated genes, in particular three GTPases (RAC1, RHOA, CDC42), three kinases (ROCK1, PAK2, LIMK), two Wiskott-Aldrich syndrome proteins (WASL, WASF2) as well as actin related protein 2/3 complex (ARPC2, ARPC3) and cofilin (CFL1). Variability in F-actin content between subjects was high; reduced actin content was only reduced within group evaluation.CONCLUSIONS: Reduced cytoskeleton-associated gene expression after n-3 PUFA supplementation suggests that regulation of cytoskeleton dynamics might be an additional way by which n-3 PUFAs exert their cellular effects. Concerning F-actin, this analysis did not reveal unmistakable results impeding a generalized conclusion.",
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author = "Simone Schmidt and Janina Willers and Sabine Riecker and Katharina M{\"o}ller and Schuchardt, {Jan Philipp} and Andreas Hahn",
note = "Funding information: This study was supported by the young researcher program “Wege in die Forschung” of the Leibniz University of Hannover, Germany. We thank the Department of Cell Biology of the Medical School Hannover (MHH), which enabled us to use their confocal laser microscope for analysis. The supply of the study preparations from Dr. Loges + Co. GmbH, Winsen, Germany, is gratefully acknowledged.",
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TY - JOUR

T1 - Effect of omega-3 polyunsaturated fatty acids on the cytoskeleton

T2 - an open-label intervention study

AU - Schmidt, Simone

AU - Willers, Janina

AU - Riecker, Sabine

AU - Möller, Katharina

AU - Schuchardt, Jan Philipp

AU - Hahn, Andreas

N1 - Funding information: This study was supported by the young researcher program “Wege in die Forschung” of the Leibniz University of Hannover, Germany. We thank the Department of Cell Biology of the Medical School Hannover (MHH), which enabled us to use their confocal laser microscope for analysis. The supply of the study preparations from Dr. Loges + Co. GmbH, Winsen, Germany, is gratefully acknowledged.

PY - 2015/2/14

Y1 - 2015/2/14

N2 - BACKGROUND: Omega-3 polyunsaturated fatty acids (n-3 PUFAs) show beneficial effects on cardiovascular health and cognitive functions, but the underlying molecular mechanisms are not completely understood. Because of the fact that cytoskeleton dynamics affect almost every cellular process, the regulation of cytoskeletal dynamics could be a new pathway by which n-3 PUFAs exert their effects on cellular level.METHODS: A 12-week open-label intervention study with 12 healthy men was conducted to determine the effects of 2.7 g/d n-3 PUFA on changes in mRNA expression of cytoskeleton-associated genes by quantitative real-time PCR in whole blood. Furthermore, the actin content in red blood cells was analyzed by immunofluorescence imaging.RESULTS: N-3 PUFA supplementation resulted in a significant down-regulation of cytoskeleton-associated genes, in particular three GTPases (RAC1, RHOA, CDC42), three kinases (ROCK1, PAK2, LIMK), two Wiskott-Aldrich syndrome proteins (WASL, WASF2) as well as actin related protein 2/3 complex (ARPC2, ARPC3) and cofilin (CFL1). Variability in F-actin content between subjects was high; reduced actin content was only reduced within group evaluation.CONCLUSIONS: Reduced cytoskeleton-associated gene expression after n-3 PUFA supplementation suggests that regulation of cytoskeleton dynamics might be an additional way by which n-3 PUFAs exert their cellular effects. Concerning F-actin, this analysis did not reveal unmistakable results impeding a generalized conclusion.

AB - BACKGROUND: Omega-3 polyunsaturated fatty acids (n-3 PUFAs) show beneficial effects on cardiovascular health and cognitive functions, but the underlying molecular mechanisms are not completely understood. Because of the fact that cytoskeleton dynamics affect almost every cellular process, the regulation of cytoskeletal dynamics could be a new pathway by which n-3 PUFAs exert their effects on cellular level.METHODS: A 12-week open-label intervention study with 12 healthy men was conducted to determine the effects of 2.7 g/d n-3 PUFA on changes in mRNA expression of cytoskeleton-associated genes by quantitative real-time PCR in whole blood. Furthermore, the actin content in red blood cells was analyzed by immunofluorescence imaging.RESULTS: N-3 PUFA supplementation resulted in a significant down-regulation of cytoskeleton-associated genes, in particular three GTPases (RAC1, RHOA, CDC42), three kinases (ROCK1, PAK2, LIMK), two Wiskott-Aldrich syndrome proteins (WASL, WASF2) as well as actin related protein 2/3 complex (ARPC2, ARPC3) and cofilin (CFL1). Variability in F-actin content between subjects was high; reduced actin content was only reduced within group evaluation.CONCLUSIONS: Reduced cytoskeleton-associated gene expression after n-3 PUFA supplementation suggests that regulation of cytoskeleton dynamics might be an additional way by which n-3 PUFAs exert their cellular effects. Concerning F-actin, this analysis did not reveal unmistakable results impeding a generalized conclusion.

KW - Actin-Related Protein 2-3 Complex/drug effects

KW - Adult

KW - Cofilin 1/drug effects

KW - Cytoskeleton/drug effects

KW - Down-Regulation/drug effects

KW - Fatty Acids, Omega-3/pharmacology

KW - Fluorescent Antibody Technique

KW - Gene Expression/drug effects

KW - Humans

KW - Lim Kinases/drug effects

KW - Male

KW - Real-Time Polymerase Chain Reaction

KW - Wiskott-Aldrich Syndrome Protein Family/drug effects

KW - Wiskott-Aldrich Syndrome Protein, Neuronal/drug effects

KW - cdc42 GTP-Binding Protein/drug effects

KW - p21-Activated Kinases/drug effects

KW - rac1 GTP-Binding Protein/drug effects

KW - rho-Associated Kinases/drug effects

KW - rhoA GTP-Binding Protein/drug effects

KW - Omega-3 index

KW - Red blood cells

KW - Gene-expression

KW - GTPases

KW - n-3 PUFA

KW - F-actin

KW - Cytoskeleton

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U2 - 10.1186/1476-511X-14-4

DO - 10.1186/1476-511X-14-4

M3 - Article

C2 - 25971815

VL - 14

JO - Lipids in health and disease

JF - Lipids in health and disease

SN - 1476-511X

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