ILK induces cardiomyogenesis in the human heart

Integrin-linked kinase (ILK) is a widely conserved serine/threonine kinase that regulates diverse signal transduction pathways implicated in cardiac hypertrophy and contractility. In this study we explored whether experimental overexpression of ILK would up-regulate morphogenesis in the human fetal...

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Veröffentlicht in:PloS one 2012-05, Vol.7 (5), p.e37802-e37802
Hauptverfasser: Traister, Alexandra, Aafaqi, Shabana, Masse, Stephane, Dai, Xiaojing, Li, Mark, Hinek, Aleksander, Nanthakumar, Kumaraswamy, Hannigan, Gregory, Coles, John G
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container_title PloS one
container_volume 7
creator Traister, Alexandra
Aafaqi, Shabana
Masse, Stephane
Dai, Xiaojing
Li, Mark
Hinek, Aleksander
Nanthakumar, Kumaraswamy
Hannigan, Gregory
Coles, John G
description Integrin-linked kinase (ILK) is a widely conserved serine/threonine kinase that regulates diverse signal transduction pathways implicated in cardiac hypertrophy and contractility. In this study we explored whether experimental overexpression of ILK would up-regulate morphogenesis in the human fetal heart. Primary cultures of human fetal myocardial cells (19-22 weeks gestation) yielded scattered aggregates of cardioblasts positive for the early cardiac lineage marker nk × 2.5 and containing nascent sarcomeres. Cardiac cells in colonies uniformly expressed the gap junction protein connexin 43 (C × 43) and displayed a spectrum of differentiation with only a subset of cells exhibiting the late cardiomyogenic marker troponin T (cTnT) and evidence of electrical excitability. Adenovirus-mediated overexpression of ILK potently increased the number of new aggregates of primitive cardioblasts (p
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In this study we explored whether experimental overexpression of ILK would up-regulate morphogenesis in the human fetal heart. Primary cultures of human fetal myocardial cells (19-22 weeks gestation) yielded scattered aggregates of cardioblasts positive for the early cardiac lineage marker nk × 2.5 and containing nascent sarcomeres. Cardiac cells in colonies uniformly expressed the gap junction protein connexin 43 (C × 43) and displayed a spectrum of differentiation with only a subset of cells exhibiting the late cardiomyogenic marker troponin T (cTnT) and evidence of electrical excitability. Adenovirus-mediated overexpression of ILK potently increased the number of new aggregates of primitive cardioblasts (p&lt;0.001). The number of cardioblast colonies was significantly decreased (p&lt;0.05) when ILK expression was knocked down with ILK targeted siRNA. Interestingly, overexpression of the activation resistant ILK mutant (ILK(R211A)) resulted in much greater increase in the number of new cell aggregates as compared to overexpression of wild-type ILK (ILK(WT)). The cardiomyogenic effects of ILK(R211A) and ILK(WT) were accompanied by concurrent activation of β-catenin (p&lt;0.001) and increase expression of progenitor cell marker islet-1, which was also observed in lysates of transgenic mice with cardiac-specific over-expression of ILK(R211A) and ILK(WT). Finally, endogenous ILK expression was shown to increase in concert with those of cardiomyogenic markers during directed cardiomyogenic differentiation in human embryonic stem cells (hESCs). In the human fetal heart ILK activation is instructive to the specification of mesodermal precursor cells towards a cardiomyogenic lineage. Induction of cardiomyogenesis by ILK overexpression bypasses the requirement of proximal PI3K activation for transduction of growth factor- and β1-integrin-mediated differentiation signals. Altogether, our data indicate that ILK represents a novel regulatory checkpoint during human cardiomyogenesis.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0037802</identifier><identifier>PMID: 22666394</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>1-Phosphatidylinositol 3-kinase ; Activation ; Aggregates ; Biology ; Bone marrow ; Calcium-binding protein ; Cardiac Myosins ; Cardiology ; Cardiomyocytes ; Cell adhesion &amp; migration ; Cell Aggregation ; Cell cycle ; Cellular signal transduction ; Colonies ; Connexin 43 ; Differentiation ; Electrophysiological Phenomena ; Embryo cells ; Embryonic stem cells ; Embryonic Stem Cells - cytology ; Embryonic Stem Cells - metabolism ; Enzyme Activation ; Excitability ; Female ; Fetus - cytology ; Fetuses ; Gene Expression Regulation ; Genetic engineering ; Genotype &amp; phenotype ; Gestation ; Health care networks ; Heart ; Heart diseases ; Heart hypertrophy ; Humans ; Hypertrophy ; Hypoxia ; ILK protein ; Integrins ; Islet-1 protein ; Kinases ; LIM-Homeodomain Proteins - genetics ; Lysates ; Medical research ; Microscopy ; Morphogenesis ; Muscle contraction ; Myoblasts, Cardiac - cytology ; Myoblasts, Cardiac - metabolism ; Myocardium - cytology ; Myocardium - metabolism ; Myocytes, Cardiac - cytology ; Myocytes, Cardiac - metabolism ; Myosin Heavy Chains - metabolism ; Overexpression ; Phosphatidylinositol 3-Kinases - metabolism ; Physiology ; Pregnancy ; Progenitor cells ; Protein Transport ; Protein-Serine-Threonine Kinases - metabolism ; Protein-serine/threonine kinase ; Proteins ; Rodents ; Sarcomeres ; Sarcomeres - metabolism ; Signal transduction ; Stem cells ; Transcription Factors - genetics ; Transgenic mice ; Troponin ; Vascular endothelial growth factor</subject><ispartof>PloS one, 2012-05, Vol.7 (5), p.e37802-e37802</ispartof><rights>COPYRIGHT 2012 Public Library of Science</rights><rights>2012 Traister et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License: https://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>Traister et al. 2012</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c692t-6951c6a3f89f7afa820e650c7c335a0c2f6f1bcbc79543ab91acfa5e2c3ae07c3</citedby><cites>FETCH-LOGICAL-c692t-6951c6a3f89f7afa820e650c7c335a0c2f6f1bcbc79543ab91acfa5e2c3ae07c3</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/PMC3362604/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC3362604/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,864,885,2102,2928,23866,27924,27925,53791,53793</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22666394$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Emanueli, Costanza</contributor><creatorcontrib>Traister, Alexandra</creatorcontrib><creatorcontrib>Aafaqi, Shabana</creatorcontrib><creatorcontrib>Masse, Stephane</creatorcontrib><creatorcontrib>Dai, Xiaojing</creatorcontrib><creatorcontrib>Li, Mark</creatorcontrib><creatorcontrib>Hinek, Aleksander</creatorcontrib><creatorcontrib>Nanthakumar, Kumaraswamy</creatorcontrib><creatorcontrib>Hannigan, Gregory</creatorcontrib><creatorcontrib>Coles, John G</creatorcontrib><title>ILK induces cardiomyogenesis in the human heart</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>Integrin-linked kinase (ILK) is a widely conserved serine/threonine kinase that regulates diverse signal transduction pathways implicated in cardiac hypertrophy and contractility. In this study we explored whether experimental overexpression of ILK would up-regulate morphogenesis in the human fetal heart. Primary cultures of human fetal myocardial cells (19-22 weeks gestation) yielded scattered aggregates of cardioblasts positive for the early cardiac lineage marker nk × 2.5 and containing nascent sarcomeres. Cardiac cells in colonies uniformly expressed the gap junction protein connexin 43 (C × 43) and displayed a spectrum of differentiation with only a subset of cells exhibiting the late cardiomyogenic marker troponin T (cTnT) and evidence of electrical excitability. Adenovirus-mediated overexpression of ILK potently increased the number of new aggregates of primitive cardioblasts (p&lt;0.001). The number of cardioblast colonies was significantly decreased (p&lt;0.05) when ILK expression was knocked down with ILK targeted siRNA. Interestingly, overexpression of the activation resistant ILK mutant (ILK(R211A)) resulted in much greater increase in the number of new cell aggregates as compared to overexpression of wild-type ILK (ILK(WT)). The cardiomyogenic effects of ILK(R211A) and ILK(WT) were accompanied by concurrent activation of β-catenin (p&lt;0.001) and increase expression of progenitor cell marker islet-1, which was also observed in lysates of transgenic mice with cardiac-specific over-expression of ILK(R211A) and ILK(WT). Finally, endogenous ILK expression was shown to increase in concert with those of cardiomyogenic markers during directed cardiomyogenic differentiation in human embryonic stem cells (hESCs). In the human fetal heart ILK activation is instructive to the specification of mesodermal precursor cells towards a cardiomyogenic lineage. Induction of cardiomyogenesis by ILK overexpression bypasses the requirement of proximal PI3K activation for transduction of growth factor- and β1-integrin-mediated differentiation signals. 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phenotype</subject><subject>Gestation</subject><subject>Health care networks</subject><subject>Heart</subject><subject>Heart diseases</subject><subject>Heart hypertrophy</subject><subject>Humans</subject><subject>Hypertrophy</subject><subject>Hypoxia</subject><subject>ILK protein</subject><subject>Integrins</subject><subject>Islet-1 protein</subject><subject>Kinases</subject><subject>LIM-Homeodomain Proteins - genetics</subject><subject>Lysates</subject><subject>Medical research</subject><subject>Microscopy</subject><subject>Morphogenesis</subject><subject>Muscle contraction</subject><subject>Myoblasts, Cardiac - cytology</subject><subject>Myoblasts, Cardiac - metabolism</subject><subject>Myocardium - cytology</subject><subject>Myocardium - metabolism</subject><subject>Myocytes, Cardiac - cytology</subject><subject>Myocytes, Cardiac - metabolism</subject><subject>Myosin Heavy Chains - metabolism</subject><subject>Overexpression</subject><subject>Phosphatidylinositol 3-Kinases - metabolism</subject><subject>Physiology</subject><subject>Pregnancy</subject><subject>Progenitor cells</subject><subject>Protein Transport</subject><subject>Protein-Serine-Threonine Kinases - metabolism</subject><subject>Protein-serine/threonine kinase</subject><subject>Proteins</subject><subject>Rodents</subject><subject>Sarcomeres</subject><subject>Sarcomeres - metabolism</subject><subject>Signal transduction</subject><subject>Stem cells</subject><subject>Transcription Factors - genetics</subject><subject>Transgenic mice</subject><subject>Troponin</subject><subject>Vascular endothelial growth factor</subject><issn>1932-6203</issn><issn>1932-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>DOA</sourceid><recordid>eNqNkluL1DAUx4so7kW_gWhBEH2Y2VyapH0RlsXL4MCCt9dwmiZthrYZk1bcb7-p012msg-Sh4ST3_mfc5J_krzAaI2pwBc7N_oe2vXe9XqNEBU5Io-SU1xQsuIE0cdH55PkLIQdQozmnD9NTgjhnNMiO00uNtsvqe2rUemQKvCVdd2Nq3Wvgw3xIh0anTZjB33aaPDDs-SJgTbo5_N-nvz4-OH71efV9vrT5upyu1K8IMOKFwwrDtTkhRFgICdIc4aUUJQyQIoYbnCpSiUKllEoCwzKANNEUdAoUufJq4PuvnVBzrMGiSlhiOA855HYHIjKwU7uve3A30gHVv4NOF_L2K9VrZZYlGBMTiskWJaJPBdxdlpWwMBUpISo9X6uNpadrpTuBw_tQnR509tG1u63pJQTjrIo8HYW8O7XqMMgOxuUblvotRtj32jqGVHOIvr6H_Th6WaqhjiA7Y2LddUkKi8zIRDKMJ_Krh-g4qp0Z1U0hrExvkh4t0iIzKD_DDWMIcjNt6__z17_XLJvjtjolHZogmvHwbo-LMHsACrvQvDa3D8yRnLy9d1ryMnXcvZ1THt5_EH3SXdGpreLsvE3</recordid><startdate>20120529</startdate><enddate>20120529</enddate><creator>Traister, Alexandra</creator><creator>Aafaqi, Shabana</creator><creator>Masse, Stephane</creator><creator>Dai, Xiaojing</creator><creator>Li, Mark</creator><creator>Hinek, Aleksander</creator><creator>Nanthakumar, Kumaraswamy</creator><creator>Hannigan, Gregory</creator><creator>Coles, John G</creator><general>Public Library of Science</general><general>Public Library of Science (PLoS)</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>IOV</scope><scope>ISR</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7QO</scope><scope>7RV</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TG</scope><scope>7TM</scope><scope>7U9</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB.</scope><scope>KB0</scope><scope>KL.</scope><scope>L6V</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>M7S</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PATMY</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>RC3</scope><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope></search><sort><creationdate>20120529</creationdate><title>ILK induces cardiomyogenesis in the human heart</title><author>Traister, Alexandra ; 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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>Access via ProQuest (Open Access)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>Environmental Science Collection</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - 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>Traister, Alexandra</au><au>Aafaqi, Shabana</au><au>Masse, Stephane</au><au>Dai, Xiaojing</au><au>Li, Mark</au><au>Hinek, Aleksander</au><au>Nanthakumar, Kumaraswamy</au><au>Hannigan, Gregory</au><au>Coles, John G</au><au>Emanueli, Costanza</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>ILK induces cardiomyogenesis in the human heart</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2012-05-29</date><risdate>2012</risdate><volume>7</volume><issue>5</issue><spage>e37802</spage><epage>e37802</epage><pages>e37802-e37802</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Integrin-linked kinase (ILK) is a widely conserved serine/threonine kinase that regulates diverse signal transduction pathways implicated in cardiac hypertrophy and contractility. In this study we explored whether experimental overexpression of ILK would up-regulate morphogenesis in the human fetal heart. Primary cultures of human fetal myocardial cells (19-22 weeks gestation) yielded scattered aggregates of cardioblasts positive for the early cardiac lineage marker nk × 2.5 and containing nascent sarcomeres. Cardiac cells in colonies uniformly expressed the gap junction protein connexin 43 (C × 43) and displayed a spectrum of differentiation with only a subset of cells exhibiting the late cardiomyogenic marker troponin T (cTnT) and evidence of electrical excitability. Adenovirus-mediated overexpression of ILK potently increased the number of new aggregates of primitive cardioblasts (p&lt;0.001). The number of cardioblast colonies was significantly decreased (p&lt;0.05) when ILK expression was knocked down with ILK targeted siRNA. Interestingly, overexpression of the activation resistant ILK mutant (ILK(R211A)) resulted in much greater increase in the number of new cell aggregates as compared to overexpression of wild-type ILK (ILK(WT)). The cardiomyogenic effects of ILK(R211A) and ILK(WT) were accompanied by concurrent activation of β-catenin (p&lt;0.001) and increase expression of progenitor cell marker islet-1, which was also observed in lysates of transgenic mice with cardiac-specific over-expression of ILK(R211A) and ILK(WT). Finally, endogenous ILK expression was shown to increase in concert with those of cardiomyogenic markers during directed cardiomyogenic differentiation in human embryonic stem cells (hESCs). In the human fetal heart ILK activation is instructive to the specification of mesodermal precursor cells towards a cardiomyogenic lineage. Induction of cardiomyogenesis by ILK overexpression bypasses the requirement of proximal PI3K activation for transduction of growth factor- and β1-integrin-mediated differentiation signals. Altogether, our data indicate that ILK represents a novel regulatory checkpoint during human cardiomyogenesis.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>22666394</pmid><doi>10.1371/journal.pone.0037802</doi><tpages>e37802</tpages><oa>free_for_read</oa></addata></record>
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1932-6203
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subjects 1-Phosphatidylinositol 3-kinase
Activation
Aggregates
Biology
Bone marrow
Calcium-binding protein
Cardiac Myosins
Cardiology
Cardiomyocytes
Cell adhesion & migration
Cell Aggregation
Cell cycle
Cellular signal transduction
Colonies
Connexin 43
Differentiation
Electrophysiological Phenomena
Embryo cells
Embryonic stem cells
Embryonic Stem Cells - cytology
Embryonic Stem Cells - metabolism
Enzyme Activation
Excitability
Female
Fetus - cytology
Fetuses
Gene Expression Regulation
Genetic engineering
Genotype & phenotype
Gestation
Health care networks
Heart
Heart diseases
Heart hypertrophy
Humans
Hypertrophy
Hypoxia
ILK protein
Integrins
Islet-1 protein
Kinases
LIM-Homeodomain Proteins - genetics
Lysates
Medical research
Microscopy
Morphogenesis
Muscle contraction
Myoblasts, Cardiac - cytology
Myoblasts, Cardiac - metabolism
Myocardium - cytology
Myocardium - metabolism
Myocytes, Cardiac - cytology
Myocytes, Cardiac - metabolism
Myosin Heavy Chains - metabolism
Overexpression
Phosphatidylinositol 3-Kinases - metabolism
Physiology
Pregnancy
Progenitor cells
Protein Transport
Protein-Serine-Threonine Kinases - metabolism
Protein-serine/threonine kinase
Proteins
Rodents
Sarcomeres
Sarcomeres - metabolism
Signal transduction
Stem cells
Transcription Factors - genetics
Transgenic mice
Troponin
Vascular endothelial growth factor
title ILK induces cardiomyogenesis in the human heart
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