Metformin ameliorates IL-6-induced hepatic insulin resistance via induction of orphan nuclear receptor small heterodimer partner (SHP) in mouse models

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dc.contributor.authorY D Kim-
dc.contributor.authorYong Hoon Kim-
dc.contributor.authorY M Cho-
dc.contributor.authorD K Kim-
dc.contributor.authorS W Ahn-
dc.contributor.authorJ M Lee-
dc.contributor.authorD Chanda-
dc.contributor.authorM Shong-
dc.contributor.authorChul Ho Lee-
dc.contributor.authorH S Choi-
dc.date.accessioned2017-04-19T09:30:19Z-
dc.date.available2017-04-19T09:30:19Z-
dc.date.issued2012-
dc.identifier.issn0012186X-
dc.identifier.uri10.1007/s00125-012-2494-4ko
dc.identifier.urihttps://oak.kribb.re.kr/handle/201005/10739-
dc.description.abstractAims/hypothesis IL-6 is a proinflammatory cytokine associated with the pathogenesis of hepatic diseases. Metformin is an anti-diabetic drug used for the treatment of type 2 diabetes, and orphan nuclear receptor small heterodimer partner SHP, also known as NR0B2), a transcriptional co-repressor, plays an important role in maintaining metabolic homeostasis. Here, we demonstrate that metformin-mediated activation of AMPactivated protein kinase (AMPK) increases SHP protein production and regulates IL-6-induced hepatic insulin resistance. Methods We investigated metformin-mediated SHP production improved insulin resistance through the regulation of an IL-6-dependent pathway (involving signal transducer and activator of transcription 3 [STAT3] and suppressor of cytokine signalling 3 [SOCS3]) in both Shp knockdown nd Shp null mice. Results IL-6-induced STAT3 transactivation and SOCS3 production were significantly repressed by metformin, adenoviral constitutively active AMPK (Ad-CA-AMPK), and adenoviral SHP (Ad-SHP), but not in Shp knockdown, or with the adenoviral dominant negative form of AMPK (Ad-DNAMPK). Chromatin immunoprecipitation (ChIP) coimmunoprecipitation (Co-IP) and protein localisation studies showed that SHP inhibits DNA binding of STAT3 on the Socs3 gene promoter via interaction and colocalisation within the nucleus. Upregulation of inflammatory enes and downregulation of hepatic insulin signalling by acute IL-6 treatment were observed in wild-type mice but not in Shp null mice. Finally, chronic IL-6 exposure caused hepatic insulin resistance, leading to impaired insulin tolerance and elevated gluconeogenesis, and these phenomena were aggravated in Shp null mice. Conclusions/interpretation Our results demonstrate that SHP upregulation by metformin may prevent hepatic disorders by regulating the IL-6-dependent pathway, and that this pathway can help to ameliorate the pathogenesis of cytokine-mediated metabolic dysfunction-
dc.publisherSpringer-
dc.titleMetformin ameliorates IL-6-induced hepatic insulin resistance via induction of orphan nuclear receptor small heterodimer partner (SHP) in mouse models-
dc.title.alternativeMetformin ameliorates IL-6-induced hepatic insulin resistance via induction of orphan nuclear receptor small heterodimer partner (SHP) in mouse models-
dc.typeArticle-
dc.citation.titleDiabetologia-
dc.citation.number5-
dc.citation.endPage1494-
dc.citation.startPage1482-
dc.citation.volume55-
dc.contributor.affiliatedAuthorYong Hoon Kim-
dc.contributor.affiliatedAuthorChul Ho Lee-
dc.contributor.alternativeName김용득-
dc.contributor.alternativeName김용훈-
dc.contributor.alternativeName조영민-
dc.contributor.alternativeName김돈규-
dc.contributor.alternativeName안승원-
dc.contributor.alternativeName이지민-
dc.contributor.alternativeNameChanda-
dc.contributor.alternativeName송민호-
dc.contributor.alternativeName이철호-
dc.contributor.alternativeName최흥식-
dc.identifier.bibliographicCitationDiabetologia, vol. 55, no. 5, pp. 1482-1494-
dc.identifier.doi10.1007/s00125-012-2494-4-
dc.subject.keywordAMP-activated protein kinase-
dc.subject.keywordInsulin resistance-
dc.subject.keywordInsulin sensitivity-
dc.subject.keywordInterleukin-6-
dc.subject.keywordMetformin-
dc.subject.keywordNr0b2-
dc.subject.keywordShp-
dc.subject.keywordSmall heterodimer partner-
dc.subject.localAMP-activated protein kinase-
dc.subject.localInsulin resistance-
dc.subject.localInsulin sensitivity-
dc.subject.localInterleukin-6-
dc.subject.localMetformin-
dc.subject.localNr0b2-
dc.subject.localShp-
dc.subject.localSHP-
dc.subject.localSmall heterodimer partner-
dc.description.journalClassY-
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Ochang Branch Institute > Division of Bioinfrastructure > Laboratory Animal Resource Center > 1. Journal Articles
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