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Vitamin D3–Upregulated Protein-1 (VDUP-1) Regulates Redox-Dependent Vascular Smooth Muscle Cell Proliferation Through Interaction With Thioredoxin

ABSTRACT—Reactive oxygen species are important cellular signaling molecules, and thioredoxin (TRX) is a key regulator of cellular redox balance. We investigated the interaction of TRX with its endogenous inhibitor, vitamin D3–upregulated protein (VDUP)-1, in human aortic smooth muscle cells (SMCs)....

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Published in:Circulation research 2002-10, Vol.91 (8), p.689-695
Main Authors: Schulze, P Christian, De Keulenaer, Gilles W, Yoshioka, Jun, Kassik, Kimberly A, Lee, Richard T
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De Keulenaer, Gilles W
Yoshioka, Jun
Kassik, Kimberly A
Lee, Richard T
description ABSTRACT—Reactive oxygen species are important cellular signaling molecules, and thioredoxin (TRX) is a key regulator of cellular redox balance. We investigated the interaction of TRX with its endogenous inhibitor, vitamin D3–upregulated protein (VDUP)-1, in human aortic smooth muscle cells (SMCs). Adenoviral gene transfer of TRX enhanced TRX enzyme activity 2.7±0.4-fold (P
doi_str_mv 10.1161/01.RES.0000037982.55074.F6
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We investigated the interaction of TRX with its endogenous inhibitor, vitamin D3–upregulated protein (VDUP)-1, in human aortic smooth muscle cells (SMCs). Adenoviral gene transfer of TRX enhanced TRX enzyme activity 2.7±0.4-fold (P <0.05 versus cells infected with adenoviral vector expressing green fluorescent protein [AdGFP]) and resulted in a 3.8±0.5-fold increase of cellular DNA synthesis as detected by methyl-[H]thymidine incorporation (P <0.001). Platelet-derived growth factor (PDGF) also increased TRX enzyme activity 2.5±3.3-fold (P <0.05 versus no stimulation) and DNA synthesis 6.5±0.3-fold (P <0.001 versus no stimulation) without significant changes in TRX expression. PDGF and H2O2 time-dependently suppressed VDUP-1 expression (13-fold and 30-fold reduction after 1 hour, respectively;P <0.001), and this was inhibited by the cell-permeable antioxidants N-acetylcysteine and 4,5-dihydroxy-1,3-benzene-disulfonic acid (Tiron). Overexpression of VDUP-1 (AdVDUP-1) reduced TRX activity at baseline (−61±23% versus control cells, P <0.05) and abolished PDGF-induced TRX activity (−9±27% in AdVDUP-1–infected cells;P =NS versus control cells). In addition, overexpression of VDUP-1 blocked PDGF-induced DNA synthesis (1.3±0.4-fold increase in AdVDUP-1–infected cells versus 6.5±0.4-fold increase in AdGFP-infected cells, P <0.001). In conclusion, VDUP-1 has marked antiproliferative effects in SMCs through the suppression of TRX activity, suggesting that the regulation of VDUP-1 is a critical molecular switch in the transduction of pro-oxidant mitogenic signals. 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We investigated the interaction of TRX with its endogenous inhibitor, vitamin D3–upregulated protein (VDUP)-1, in human aortic smooth muscle cells (SMCs). Adenoviral gene transfer of TRX enhanced TRX enzyme activity 2.7±0.4-fold (P <0.05 versus cells infected with adenoviral vector expressing green fluorescent protein [AdGFP]) and resulted in a 3.8±0.5-fold increase of cellular DNA synthesis as detected by methyl-[H]thymidine incorporation (P <0.001). Platelet-derived growth factor (PDGF) also increased TRX enzyme activity 2.5±3.3-fold (P <0.05 versus no stimulation) and DNA synthesis 6.5±0.3-fold (P <0.001 versus no stimulation) without significant changes in TRX expression. PDGF and H2O2 time-dependently suppressed VDUP-1 expression (13-fold and 30-fold reduction after 1 hour, respectively;P <0.001), and this was inhibited by the cell-permeable antioxidants N-acetylcysteine and 4,5-dihydroxy-1,3-benzene-disulfonic acid (Tiron). Overexpression of VDUP-1 (AdVDUP-1) reduced TRX activity at baseline (−61±23% versus control cells, P <0.05) and abolished PDGF-induced TRX activity (−9±27% in AdVDUP-1–infected cells;P =NS versus control cells). In addition, overexpression of VDUP-1 blocked PDGF-induced DNA synthesis (1.3±0.4-fold increase in AdVDUP-1–infected cells versus 6.5±0.4-fold increase in AdGFP-infected cells, P <0.001). In conclusion, VDUP-1 has marked antiproliferative effects in SMCs through the suppression of TRX activity, suggesting that the regulation of VDUP-1 is a critical molecular switch in the transduction of pro-oxidant mitogenic signals. These data also demonstrate that activation of the reductase TRX plays a pivotal role in the redox-dependent proliferation of SMCs.]]></description><subject>Active Transport, Cell Nucleus</subject><subject>Adenoviridae - genetics</subject><subject>Biological and medical sciences</subject><subject>Blood vessels and receptors</subject><subject>Carrier Proteins - genetics</subject><subject>Carrier Proteins - physiology</subject><subject>Cell Division</subject><subject>Cell Nucleus - metabolism</subject><subject>Cells, Cultured</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Genetic Vectors</subject><subject>Humans</subject><subject>Models, Biological</subject><subject>Muscle, Smooth, Vascular - cytology</subject><subject>Muscle, Smooth, Vascular - metabolism</subject><subject>Oxidation-Reduction</subject><subject>Oxidative Stress</subject><subject>RNA, Messenger - biosynthesis</subject><subject>Space life sciences</subject><subject>Thioredoxins - genetics</subject><subject>Thioredoxins - metabolism</subject><subject>Transfection</subject><subject>Vertebrates: cardiovascular system</subject><issn>0009-7330</issn><issn>1524-4571</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><recordid>eNpFkd1u1DAQhS0EokvhFZCFBIILB_8lcS7RbguViqja3eUycpxJY3DixU5UuOMd2ifkSfC2i_DNWOd8c2TPIPSK0Yyxgr2nLLs8ucro_oiyUjzLc1rK7LR4hBYs55LIvGSP0SL5FSmFoEfoWYzfKGVS8OopOmJcqILJfIHutnbSgx3xSvz5fbvZBbienZ6gxRfBT2BHwvDb7WpzQdg7fHkwY7q1_idZwQ7GFsYJb3U0yQr4avB-6vHnORoHeAnO7YOc7SDoyfoRr_vg5-sen41Tksy99tWmlnVvfdjH2vE5etJpF-HFoR6jzenJevmJnH_5eLb8cE56LoQiimmqjJJcNl2uaVN0moOgUIHsWNeIvAOlJLR5YyrDC6MoFLyR0oguVd2IY_TmIXcX_I8Z4lQPNpr0Zj2Cn2NdclbxqhAJfHkA52aAtt4FO-jwq_43xwS8PgBpENp1QY_Gxv-cqCpWSpU4-cDdeJf-H7-7-QZC3YN2U1_fL5QyTjilnFGmKNlLSvwF69uWUQ</recordid><startdate>20021018</startdate><enddate>20021018</enddate><creator>Schulze, P Christian</creator><creator>De Keulenaer, Gilles W</creator><creator>Yoshioka, Jun</creator><creator>Kassik, Kimberly A</creator><creator>Lee, Richard T</creator><general>American Heart Association, Inc</general><general>Lippincott</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>20021018</creationdate><title>Vitamin D3–Upregulated Protein-1 (VDUP-1) Regulates Redox-Dependent Vascular Smooth Muscle Cell Proliferation Through Interaction With Thioredoxin</title><author>Schulze, P Christian ; De Keulenaer, Gilles W ; Yoshioka, Jun ; Kassik, Kimberly A ; Lee, Richard T</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-h2338-81a08c8424bf5a0b6fa2e30e9e4f1fb35fe884ed5bc9c26c80e62b44c3f62bab3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Active Transport, Cell Nucleus</topic><topic>Adenoviridae - genetics</topic><topic>Biological and medical sciences</topic><topic>Blood vessels and receptors</topic><topic>Carrier Proteins - genetics</topic><topic>Carrier Proteins - physiology</topic><topic>Cell Division</topic><topic>Cell Nucleus - metabolism</topic><topic>Cells, Cultured</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Genetic Vectors</topic><topic>Humans</topic><topic>Models, Biological</topic><topic>Muscle, Smooth, Vascular - cytology</topic><topic>Muscle, Smooth, Vascular - metabolism</topic><topic>Oxidation-Reduction</topic><topic>Oxidative Stress</topic><topic>RNA, Messenger - biosynthesis</topic><topic>Space life sciences</topic><topic>Thioredoxins - genetics</topic><topic>Thioredoxins - metabolism</topic><topic>Transfection</topic><topic>Vertebrates: cardiovascular system</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Schulze, P Christian</creatorcontrib><creatorcontrib>De Keulenaer, Gilles W</creatorcontrib><creatorcontrib>Yoshioka, Jun</creatorcontrib><creatorcontrib>Kassik, Kimberly A</creatorcontrib><creatorcontrib>Lee, Richard T</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>Circulation research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Schulze, P Christian</au><au>De Keulenaer, Gilles W</au><au>Yoshioka, Jun</au><au>Kassik, Kimberly A</au><au>Lee, Richard T</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Vitamin D3–Upregulated Protein-1 (VDUP-1) Regulates Redox-Dependent Vascular Smooth Muscle Cell Proliferation Through Interaction With Thioredoxin</atitle><jtitle>Circulation research</jtitle><addtitle>Circ Res</addtitle><date>2002-10-18</date><risdate>2002</risdate><volume>91</volume><issue>8</issue><spage>689</spage><epage>695</epage><pages>689-695</pages><issn>0009-7330</issn><eissn>1524-4571</eissn><coden>CIRUAL</coden><abstract><![CDATA[ABSTRACT—Reactive oxygen species are important cellular signaling molecules, and thioredoxin (TRX) is a key regulator of cellular redox balance. We investigated the interaction of TRX with its endogenous inhibitor, vitamin D3–upregulated protein (VDUP)-1, in human aortic smooth muscle cells (SMCs). Adenoviral gene transfer of TRX enhanced TRX enzyme activity 2.7±0.4-fold (P <0.05 versus cells infected with adenoviral vector expressing green fluorescent protein [AdGFP]) and resulted in a 3.8±0.5-fold increase of cellular DNA synthesis as detected by methyl-[H]thymidine incorporation (P <0.001). Platelet-derived growth factor (PDGF) also increased TRX enzyme activity 2.5±3.3-fold (P <0.05 versus no stimulation) and DNA synthesis 6.5±0.3-fold (P <0.001 versus no stimulation) without significant changes in TRX expression. PDGF and H2O2 time-dependently suppressed VDUP-1 expression (13-fold and 30-fold reduction after 1 hour, respectively;P <0.001), and this was inhibited by the cell-permeable antioxidants N-acetylcysteine and 4,5-dihydroxy-1,3-benzene-disulfonic acid (Tiron). Overexpression of VDUP-1 (AdVDUP-1) reduced TRX activity at baseline (−61±23% versus control cells, P <0.05) and abolished PDGF-induced TRX activity (−9±27% in AdVDUP-1–infected cells;P =NS versus control cells). In addition, overexpression of VDUP-1 blocked PDGF-induced DNA synthesis (1.3±0.4-fold increase in AdVDUP-1–infected cells versus 6.5±0.4-fold increase in AdGFP-infected cells, P <0.001). In conclusion, VDUP-1 has marked antiproliferative effects in SMCs through the suppression of TRX activity, suggesting that the regulation of VDUP-1 is a critical molecular switch in the transduction of pro-oxidant mitogenic signals. These data also demonstrate that activation of the reductase TRX plays a pivotal role in the redox-dependent proliferation of SMCs.]]></abstract><cop>Hagerstown, MD</cop><pub>American Heart Association, Inc</pub><pmid>12386145</pmid><doi>10.1161/01.RES.0000037982.55074.F6</doi><tpages>7</tpages></addata></record>
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source Freely Accessible Journals
subjects Active Transport, Cell Nucleus
Adenoviridae - genetics
Biological and medical sciences
Blood vessels and receptors
Carrier Proteins - genetics
Carrier Proteins - physiology
Cell Division
Cell Nucleus - metabolism
Cells, Cultured
Fundamental and applied biological sciences. Psychology
Genetic Vectors
Humans
Models, Biological
Muscle, Smooth, Vascular - cytology
Muscle, Smooth, Vascular - metabolism
Oxidation-Reduction
Oxidative Stress
RNA, Messenger - biosynthesis
Space life sciences
Thioredoxins - genetics
Thioredoxins - metabolism
Transfection
Vertebrates: cardiovascular system
title Vitamin D3–Upregulated Protein-1 (VDUP-1) Regulates Redox-Dependent Vascular Smooth Muscle Cell Proliferation Through Interaction With Thioredoxin
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