Antagonism of betulinic acid on LPS-mediated inhibition of ABCA1 and cholesterol efflux through inhibiting nuclear factor-kappaB signaling pathway and miR-33 expression

ATP-binding cassette transporter A1 (ABCA1) is critical in exporting cholesterol from macrophages and plays a protective role in the development of atherosclerosis. The purpose of this study was to investigate the effects of betulinic acid (BA), a pentacyclic triterpenoid, on ABCA1 expression and ch...

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Veröffentlicht in:PloS one 2013-09, Vol.8 (9), p.e74782
Hauptverfasser: Zhao, Guo-Jun, Tang, Shi-Lin, Lv, Yun-Cheng, Ouyang, Xin-Ping, He, Ping-Ping, Yao, Feng, Chen, Wu-Jun, Lu, Qian, Tang, Yan-Yan, Zhang, Min, Fu, Yuchang, Zhang, Da-Wei, Yin, Kai, Tang, Chao-Ke
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container_title PloS one
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creator Zhao, Guo-Jun
Tang, Shi-Lin
Lv, Yun-Cheng
Ouyang, Xin-Ping
He, Ping-Ping
Yao, Feng
Chen, Wu-Jun
Lu, Qian
Tang, Yan-Yan
Zhang, Min
Fu, Yuchang
Zhang, Da-Wei
Yin, Kai
Tang, Chao-Ke
description ATP-binding cassette transporter A1 (ABCA1) is critical in exporting cholesterol from macrophages and plays a protective role in the development of atherosclerosis. The purpose of this study was to investigate the effects of betulinic acid (BA), a pentacyclic triterpenoid, on ABCA1 expression and cholesterol efflux, and to further determine the underlying mechanism. BA promoted ABCA1 expression and cholesterol efflux, decreased cellular cholesterol and cholesterol ester content in LPS-treated macrophages. Furthermore, we found that BA promoted ABCA1 expression via down-regulation of miR-33s. The inhibition of LPS-induced NF-κB activation further decreased miR-33s expression and enhanced ABCA1 expression and cholesterol efflux when compared with BA only treatment. In addition, BA suppressed IκB phosphorylation, p65 phosphorylation and nuclear translocation, and the transcription of NF-κB-dependent related gene. Moreover, BA reduced atherosclerotic lesion size, miR-33s levels and NF-κB activation, and promoted ABCA1 expression in apoE(-/-) mice. Taken together, these results reveal a novel mechanism for the BA-mediated ABCA1 expression, which may provide new insights for developing strategies for modulating vascular inflammation and atherosclerosis.
doi_str_mv 10.1371/journal.pone.0074782
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The purpose of this study was to investigate the effects of betulinic acid (BA), a pentacyclic triterpenoid, on ABCA1 expression and cholesterol efflux, and to further determine the underlying mechanism. BA promoted ABCA1 expression and cholesterol efflux, decreased cellular cholesterol and cholesterol ester content in LPS-treated macrophages. Furthermore, we found that BA promoted ABCA1 expression via down-regulation of miR-33s. The inhibition of LPS-induced NF-κB activation further decreased miR-33s expression and enhanced ABCA1 expression and cholesterol efflux when compared with BA only treatment. In addition, BA suppressed IκB phosphorylation, p65 phosphorylation and nuclear translocation, and the transcription of NF-κB-dependent related gene. Moreover, BA reduced atherosclerotic lesion size, miR-33s levels and NF-κB activation, and promoted ABCA1 expression in apoE(-/-) mice. Taken together, these results reveal a novel mechanism for the BA-mediated ABCA1 expression, which may provide new insights for developing strategies for modulating vascular inflammation and atherosclerosis.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0074782</identifier><identifier>PMID: 24086374</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>ABCA1 protein ; Acids ; Activation ; Animals ; Apolipoprotein E ; Apolipoproteins ; Apolipoproteins E - deficiency ; Apolipoproteins E - metabolism ; Arteriosclerosis ; Atherosclerosis ; Atherosclerosis - blood ; Atherosclerosis - metabolism ; Atherosclerosis - pathology ; ATP Binding Cassette Transporter 1 - antagonists &amp; inhibitors ; ATP Binding Cassette Transporter 1 - metabolism ; ATP-binding protein ; Betulinic acid ; Biological Transport - drug effects ; Body Weight - drug effects ; Cell Line ; Cell Nucleus - drug effects ; Cell Nucleus - metabolism ; Cholesterol ; Cholesterol - metabolism ; Cytokines ; Development and progression ; Efflux ; Gene Expression Regulation - drug effects ; Genetic transcription ; Humans ; Inflammation ; Inhibition ; Kinases ; Laboratories ; Lipids ; Lipids - blood ; Lipopolysaccharides ; Lipopolysaccharides - pharmacology ; Macrophages ; Macrophages - drug effects ; Macrophages - metabolism ; Male ; Metabolism ; Mice ; MicroRNAs ; MicroRNAs - genetics ; MicroRNAs - metabolism ; Models, Biological ; NF-kappa B - metabolism ; NF-κB protein ; Nuclear transport ; Phosphorylation ; Protein Transport - drug effects ; Rodents ; Signal transduction ; Signal Transduction - drug effects ; Signal Transduction - genetics ; Signaling ; Transcription ; Translocation ; Transporter ; Triterpenes - antagonists &amp; inhibitors ; Triterpenes - pharmacology</subject><ispartof>PloS one, 2013-09, Vol.8 (9), p.e74782</ispartof><rights>COPYRIGHT 2013 Public Library of Science</rights><rights>2013 Zhao et al. 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Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2013 Zhao et al 2013 Zhao et al</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c692t-42c0f0b72559e0bbb6d742af22d758308e09cb2774303a58dc023e56f5c0ffa13</citedby><cites>FETCH-LOGICAL-c692t-42c0f0b72559e0bbb6d742af22d758308e09cb2774303a58dc023e56f5c0ffa13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3783495/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3783495/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,864,885,2102,2928,23866,27924,27925,53791,53793,79600,79601</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24086374$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Valledor, Annabel</contributor><creatorcontrib>Zhao, Guo-Jun</creatorcontrib><creatorcontrib>Tang, Shi-Lin</creatorcontrib><creatorcontrib>Lv, Yun-Cheng</creatorcontrib><creatorcontrib>Ouyang, Xin-Ping</creatorcontrib><creatorcontrib>He, Ping-Ping</creatorcontrib><creatorcontrib>Yao, Feng</creatorcontrib><creatorcontrib>Chen, Wu-Jun</creatorcontrib><creatorcontrib>Lu, Qian</creatorcontrib><creatorcontrib>Tang, Yan-Yan</creatorcontrib><creatorcontrib>Zhang, Min</creatorcontrib><creatorcontrib>Fu, Yuchang</creatorcontrib><creatorcontrib>Zhang, Da-Wei</creatorcontrib><creatorcontrib>Yin, Kai</creatorcontrib><creatorcontrib>Tang, Chao-Ke</creatorcontrib><title>Antagonism of betulinic acid on LPS-mediated inhibition of ABCA1 and cholesterol efflux through inhibiting nuclear factor-kappaB signaling pathway and miR-33 expression</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>ATP-binding cassette transporter A1 (ABCA1) is critical in exporting cholesterol from macrophages and plays a protective role in the development of atherosclerosis. The purpose of this study was to investigate the effects of betulinic acid (BA), a pentacyclic triterpenoid, on ABCA1 expression and cholesterol efflux, and to further determine the underlying mechanism. BA promoted ABCA1 expression and cholesterol efflux, decreased cellular cholesterol and cholesterol ester content in LPS-treated macrophages. Furthermore, we found that BA promoted ABCA1 expression via down-regulation of miR-33s. The inhibition of LPS-induced NF-κB activation further decreased miR-33s expression and enhanced ABCA1 expression and cholesterol efflux when compared with BA only treatment. In addition, BA suppressed IκB phosphorylation, p65 phosphorylation and nuclear translocation, and the transcription of NF-κB-dependent related gene. Moreover, BA reduced atherosclerotic lesion size, miR-33s levels and NF-κB activation, and promoted ABCA1 expression in apoE(-/-) mice. 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Medical Complete (Alumni)</collection><collection>Materials Science Database</collection><collection>Nursing &amp; Allied Health Database (Alumni Edition)</collection><collection>Meteorological &amp; Geoastrophysical Abstracts - Academic</collection><collection>ProQuest Engineering Collection</collection><collection>ProQuest Biological Science Collection</collection><collection>Agricultural Science Database</collection><collection>Health &amp; Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biological Science Database</collection><collection>Engineering Database</collection><collection>Nursing &amp; Allied Health Premium</collection><collection>Advanced Technologies &amp; Aerospace Database</collection><collection>ProQuest Advanced Technologies &amp; Aerospace Collection</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environmental Science Database</collection><collection>Materials Science Collection</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>Environmental Science Collection</collection><collection>Genetics Abstracts</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>Zhao, Guo-Jun</au><au>Tang, Shi-Lin</au><au>Lv, Yun-Cheng</au><au>Ouyang, Xin-Ping</au><au>He, Ping-Ping</au><au>Yao, Feng</au><au>Chen, Wu-Jun</au><au>Lu, Qian</au><au>Tang, Yan-Yan</au><au>Zhang, Min</au><au>Fu, Yuchang</au><au>Zhang, Da-Wei</au><au>Yin, Kai</au><au>Tang, Chao-Ke</au><au>Valledor, Annabel</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Antagonism of betulinic acid on LPS-mediated inhibition of ABCA1 and cholesterol efflux through inhibiting nuclear factor-kappaB signaling pathway and miR-33 expression</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2013-09-25</date><risdate>2013</risdate><volume>8</volume><issue>9</issue><spage>e74782</spage><pages>e74782-</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>ATP-binding cassette transporter A1 (ABCA1) is critical in exporting cholesterol from macrophages and plays a protective role in the development of atherosclerosis. The purpose of this study was to investigate the effects of betulinic acid (BA), a pentacyclic triterpenoid, on ABCA1 expression and cholesterol efflux, and to further determine the underlying mechanism. BA promoted ABCA1 expression and cholesterol efflux, decreased cellular cholesterol and cholesterol ester content in LPS-treated macrophages. Furthermore, we found that BA promoted ABCA1 expression via down-regulation of miR-33s. The inhibition of LPS-induced NF-κB activation further decreased miR-33s expression and enhanced ABCA1 expression and cholesterol efflux when compared with BA only treatment. In addition, BA suppressed IκB phosphorylation, p65 phosphorylation and nuclear translocation, and the transcription of NF-κB-dependent related gene. Moreover, BA reduced atherosclerotic lesion size, miR-33s levels and NF-κB activation, and promoted ABCA1 expression in apoE(-/-) mice. Taken together, these results reveal a novel mechanism for the BA-mediated ABCA1 expression, which may provide new insights for developing strategies for modulating vascular inflammation and atherosclerosis.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>24086374</pmid><doi>10.1371/journal.pone.0074782</doi><tpages>e74782</tpages><oa>free_for_read</oa></addata></record>
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subjects ABCA1 protein
Acids
Activation
Animals
Apolipoprotein E
Apolipoproteins
Apolipoproteins E - deficiency
Apolipoproteins E - metabolism
Arteriosclerosis
Atherosclerosis
Atherosclerosis - blood
Atherosclerosis - metabolism
Atherosclerosis - pathology
ATP Binding Cassette Transporter 1 - antagonists & inhibitors
ATP Binding Cassette Transporter 1 - metabolism
ATP-binding protein
Betulinic acid
Biological Transport - drug effects
Body Weight - drug effects
Cell Line
Cell Nucleus - drug effects
Cell Nucleus - metabolism
Cholesterol
Cholesterol - metabolism
Cytokines
Development and progression
Efflux
Gene Expression Regulation - drug effects
Genetic transcription
Humans
Inflammation
Inhibition
Kinases
Laboratories
Lipids
Lipids - blood
Lipopolysaccharides
Lipopolysaccharides - pharmacology
Macrophages
Macrophages - drug effects
Macrophages - metabolism
Male
Metabolism
Mice
MicroRNAs
MicroRNAs - genetics
MicroRNAs - metabolism
Models, Biological
NF-kappa B - metabolism
NF-κB protein
Nuclear transport
Phosphorylation
Protein Transport - drug effects
Rodents
Signal transduction
Signal Transduction - drug effects
Signal Transduction - genetics
Signaling
Transcription
Translocation
Transporter
Triterpenes - antagonists & inhibitors
Triterpenes - pharmacology
title Antagonism of betulinic acid on LPS-mediated inhibition of ABCA1 and cholesterol efflux through inhibiting nuclear factor-kappaB signaling pathway and miR-33 expression
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