Adenoviral overexpression of interleukin-1 receptor antagonist protein increases [beta]-cell replication in rat pancreatic islets

Adenoviral overexpression of interleukin-1 receptor antagonist protein increases [beta]-cell replication in rat pancreatic islets

The naturally occurring inhibitor of interleukin-1 (IL-1) action, interleukin-1 receptor antagonist protein (IRAP), binds to the type 1 IL-1 receptor but does not initiate IL-1 signal transduction. In this study, we have determined the effects of IL-1beta and IRAP overexpression on adult beta-cell r...

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Veröffentlicht in:Gene therapy 2005-01, Vol.12 (2), p.120
Hauptverfasser: Téllez, N, Montolio, M, Biarnés, M, Castaño, E, Soler, J, Montanya, E
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container_title Gene therapy
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creator Téllez, N
Montolio, M
Biarnés, M
Castaño, E
Soler, J
Montanya, E
description The naturally occurring inhibitor of interleukin-1 (IL-1) action, interleukin-1 receptor antagonist protein (IRAP), binds to the type 1 IL-1 receptor but does not initiate IL-1 signal transduction. In this study, we have determined the effects of IL-1beta and IRAP overexpression on adult beta-cell replication and viability. IL-1beta reduced dramatically beta-cell replication in adult rat islets both at 5.5 mM (control: 0.29+/-0.04%; IL-1beta: 0.02+/-0.02%, P
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In this study, we have determined the effects of IL-1beta and IRAP overexpression on adult beta-cell replication and viability. IL-1beta reduced dramatically beta-cell replication in adult rat islets both at 5.5 mM (control: 0.29+/-0.04%; IL-1beta: 0.02+/-0.02%, P<0.05) and 22.2 mM glucose (control: 0.84+/-0.2%; IL-1beta: 0.05+/-0.05%, P<0.05). This effect was completely prevented in islets overexpressing IRAP after adenoviral gene transfer at 5.5 mM (Ad-IL-1Ra+IL-1beta: 0.84+/-0.1%, P<0.05) and 22.2 mM glucose (Ad-IL-1Ra+IL-1beta: 1.22+/-0.2%, P<0.05). Moreover, overexpression of IRAP increased glucose-stimulated beta-cell replication in the absence of IL-1beta exposure (Ad-IL-1Ra: 1.59+/-0.5%, P<0.05). beta-Cell death (TUNEL technique) was increased in IL-1beta-exposed islets but not in Ad-IL-1Ra-infected islets (control: 0.82+/-0.2%; control+IL-1beta: 1.77+/-0.2; IRAP: 0.61+/-0.2%; IRAP+IL-1beta: 0.86+/-0.1%, P<0.05). Comparable results were obtained by flow cytometry. To determine the effect of IRAP overexpression on beta-cell replication in vivo, Ad-IL-1Ra-transduced islets were transplanted into streptozotocin diabetic rats. beta-Cell replication was significantly increased in IRAP-overexpressing islet grafts (0.98+/-0.3%, P<0.05) compared to normal pancreas (0.35+/-0.02%), but not in control islet grafts (0.50+/-0.1%). This study shows that in addition to the effects of IL-1beta on beta-cell viability, this cytokine exerts a deleterious action on beta-cell replication, which can be prevented by IRAP overexpression, and provides support for the potential use of IRAP as a therapeutic tool.]]></description><identifier>ISSN: 0969-7128</identifier><identifier>EISSN: 1476-5462</identifier><identifier>DOI: 10.1038/sj.gt.3302351</identifier><language>eng</language><publisher>Houndmills: Nature Publishing Group</publisher><ispartof>Gene therapy, 2005-01, Vol.12 (2), p.120</ispartof><rights>Copyright Nature Publishing Group Jan 2005</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,782,786,27931,27932</link.rule.ids></links><search><creatorcontrib>Téllez, N</creatorcontrib><creatorcontrib>Montolio, M</creatorcontrib><creatorcontrib>Biarnés, M</creatorcontrib><creatorcontrib>Castaño, E</creatorcontrib><creatorcontrib>Soler, J</creatorcontrib><creatorcontrib>Montanya, E</creatorcontrib><title>Adenoviral overexpression of interleukin-1 receptor antagonist protein increases [beta]-cell replication in rat pancreatic islets</title><title>Gene therapy</title><description><![CDATA[The naturally occurring inhibitor of interleukin-1 (IL-1) action, interleukin-1 receptor antagonist protein (IRAP), binds to the type 1 IL-1 receptor but does not initiate IL-1 signal transduction. In this study, we have determined the effects of IL-1beta and IRAP overexpression on adult beta-cell replication and viability. IL-1beta reduced dramatically beta-cell replication in adult rat islets both at 5.5 mM (control: 0.29+/-0.04%; IL-1beta: 0.02+/-0.02%, P<0.05) and 22.2 mM glucose (control: 0.84+/-0.2%; IL-1beta: 0.05+/-0.05%, P<0.05). This effect was completely prevented in islets overexpressing IRAP after adenoviral gene transfer at 5.5 mM (Ad-IL-1Ra+IL-1beta: 0.84+/-0.1%, P<0.05) and 22.2 mM glucose (Ad-IL-1Ra+IL-1beta: 1.22+/-0.2%, P<0.05). Moreover, overexpression of IRAP increased glucose-stimulated beta-cell replication in the absence of IL-1beta exposure (Ad-IL-1Ra: 1.59+/-0.5%, P<0.05). beta-Cell death (TUNEL technique) was increased in IL-1beta-exposed islets but not in Ad-IL-1Ra-infected islets (control: 0.82+/-0.2%; control+IL-1beta: 1.77+/-0.2; IRAP: 0.61+/-0.2%; IRAP+IL-1beta: 0.86+/-0.1%, P<0.05). Comparable results were obtained by flow cytometry. To determine the effect of IRAP overexpression on beta-cell replication in vivo, Ad-IL-1Ra-transduced islets were transplanted into streptozotocin diabetic rats. beta-Cell replication was significantly increased in IRAP-overexpressing islet grafts (0.98+/-0.3%, P<0.05) compared to normal pancreas (0.35+/-0.02%), but not in control islet grafts (0.50+/-0.1%). This study shows that in addition to the effects of IL-1beta on beta-cell viability, this cytokine exerts a deleterious action on beta-cell replication, which can be prevented by IRAP overexpression, and provides support for the potential use of IRAP as a therapeutic tool.]]></description><issn>0969-7128</issn><issn>1476-5462</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqNjL1OwzAURi0EEoEyslvsCf5JE3dECMQDsCFUGfe2crDscO9NxcqbYxAPwPQN3zlHiGutOq2su6WpO3BnrTJ2rU9Eo_txaNf9YE5FozbDph21cefigmhSSvWjM434uttBLseIPslyBITPGYEolizLXsbMgAmW95hbLRECzFxQ-sz-UHIkljMWhpgrGRA8AcmXN2D_2gZIqRpzisHzT65C6Kvgf0mOQUZKwLQSZ3ufCK7-9lLcPD483z-1Nf2xAPF2Kgvmem2NdqNyg1P2X9A3oaBYyQ</recordid><startdate>20050101</startdate><enddate>20050101</enddate><creator>Téllez, N</creator><creator>Montolio, M</creator><creator>Biarnés, M</creator><creator>Castaño, E</creator><creator>Soler, J</creator><creator>Montanya, E</creator><general>Nature Publishing Group</general><scope>3V.</scope><scope>7QP</scope><scope>7TK</scope><scope>7TM</scope><scope>7U9</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>8G5</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M2O</scope><scope>M7P</scope><scope>MBDVC</scope><scope>P64</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>Q9U</scope><scope>RC3</scope></search><sort><creationdate>20050101</creationdate><title>Adenoviral overexpression of interleukin-1 receptor antagonist protein increases [beta]-cell replication in rat pancreatic islets</title><author>Téllez, N ; 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In this study, we have determined the effects of IL-1beta and IRAP overexpression on adult beta-cell replication and viability. IL-1beta reduced dramatically beta-cell replication in adult rat islets both at 5.5 mM (control: 0.29+/-0.04%; IL-1beta: 0.02+/-0.02%, P<0.05) and 22.2 mM glucose (control: 0.84+/-0.2%; IL-1beta: 0.05+/-0.05%, P<0.05). This effect was completely prevented in islets overexpressing IRAP after adenoviral gene transfer at 5.5 mM (Ad-IL-1Ra+IL-1beta: 0.84+/-0.1%, P<0.05) and 22.2 mM glucose (Ad-IL-1Ra+IL-1beta: 1.22+/-0.2%, P<0.05). Moreover, overexpression of IRAP increased glucose-stimulated beta-cell replication in the absence of IL-1beta exposure (Ad-IL-1Ra: 1.59+/-0.5%, P<0.05). beta-Cell death (TUNEL technique) was increased in IL-1beta-exposed islets but not in Ad-IL-1Ra-infected islets (control: 0.82+/-0.2%; control+IL-1beta: 1.77+/-0.2; IRAP: 0.61+/-0.2%; IRAP+IL-1beta: 0.86+/-0.1%, P<0.05). Comparable results were obtained by flow cytometry. To determine the effect of IRAP overexpression on beta-cell replication in vivo, Ad-IL-1Ra-transduced islets were transplanted into streptozotocin diabetic rats. beta-Cell replication was significantly increased in IRAP-overexpressing islet grafts (0.98+/-0.3%, P<0.05) compared to normal pancreas (0.35+/-0.02%), but not in control islet grafts (0.50+/-0.1%). This study shows that in addition to the effects of IL-1beta on beta-cell viability, this cytokine exerts a deleterious action on beta-cell replication, which can be prevented by IRAP overexpression, and provides support for the potential use of IRAP as a therapeutic tool.]]></abstract><cop>Houndmills</cop><pub>Nature Publishing Group</pub><doi>10.1038/sj.gt.3302351</doi></addata></record>
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title Adenoviral overexpression of interleukin-1 receptor antagonist protein increases [beta]-cell replication in rat pancreatic islets
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