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Insulin induces Thr...
Insulin induces Thr484 phosphorylation and stabilization of SIK2 in adipocytes
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- Säll, Johanna (författare)
- Lund University,Lunds universitet,Proteinfosforylering,Forskargrupper vid Lunds universitet,Protein Phosphorylation,Lund University Research Groups
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- Negoita, Florentina (författare)
- Lund University,Lunds universitet,Molekylär endokrinologi,Forskargrupper vid Lunds universitet,Proteinfosforylering,Molecular Endocrinology,Lund University Research Groups,Protein Phosphorylation
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- Hansson, Björn (författare)
- Lund University,Lunds universitet,Glukostransport och proteintrafficking,Forskargrupper vid Lunds universitet,Glucose Transport and Protein Trafficking,Lund University Research Groups
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- Kopietz, Franziska (författare)
- Lund University,Lunds universitet,Proteinfosforylering,Forskargrupper vid Lunds universitet,Protein Phosphorylation,Lund University Research Groups
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- Linder, Wilhelm (författare)
- Lund University
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- Pettersson, Annie M L (författare)
- Karolinska Institute
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- Ekelund, Mikael (författare)
- Skåne University Hospital
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- Laurencikiene, Jurga (författare)
- Karolinska Institutet,Karolinska Institute
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- Degerman, Eva (författare)
- Lund University,Lunds universitet,Signaltransduktionsforskning,Forskargrupper vid Lunds universitet,Insulin Signal Transduction,Lund University Research Groups
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- Stenkula, Karin G (författare)
- Lund University,Lunds universitet,Glukostransport och proteintrafficking,Forskargrupper vid Lunds universitet,Glucose Transport and Protein Trafficking,Lund University Research Groups
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- Göransson, Olga (författare)
- Lund University,Lunds universitet,Proteinfosforylering,Forskargrupper vid Lunds universitet,Protein Phosphorylation,Lund University Research Groups
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(creator_code:org_t)
- Elsevier BV, 2019
- 2019
- Engelska.
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Ingår i: Cellular Signalling. - : Elsevier BV. - 1873-3913 .- 0898-6568. ; 55, s. 73-80
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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http://kipublication...
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Abstract
Ämnesord
Stäng
- AIMS/HYPOTHESIS: Salt-inducible kinase 2 (SIK2) is downregulated in adipose tissue from obese or insulin-resistant individuals and inhibition of SIK isoforms results in reduced glucose uptake and insulin signalling in adipocytes. However, the regulation of SIK2 itself in response to insulin in adipocytes has not been studied in detail. The aim of our work was to investigate effects of insulin on various aspects of SIK2 function in adipocytes.METHODS: Primary adipocytes were isolated from human subcutaneous and rat epididymal adipose tissue. Insulin-induced phosphorylation of SIK2 and HDAC4 was analyzed using phosphospecific antibodies and changes in the catalytic activity of SIK2 with in vitro kinase assay. SIK2 protein levels were analyzed in primary adipocytes treated with the proteasome inhibitor MG132.RESULTS: We have identified a novel regulatory pathway of SIK2 in adipocytes, which involves insulin-induced phosphorylation at Thr484. This phosphorylation is impaired in individuals with a reduced insulin action. Insulin stimulation does not affect SIK2 catalytic activity or cellular activity towards HDAC4, but is associated with increased SIK2 protein levels in adipocytes.CONCLUSION/INTERPRETATION: Our data suggest that downregulation of SIK2 in the adipose tissue of insulin-resistant individuals can partially be caused by impaired insulin signalling, which might result in defects in SIK2 expression and function.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Endokrinologi och diabetes (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Endocrinology and Diabetes (hsv//eng)
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- Av författaren/redakt...
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Säll, Johanna
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Negoita, Florent ...
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Hansson, Björn
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Kopietz, Franzis ...
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Linder, Wilhelm
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Pettersson, Anni ...
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visa fler...
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Ekelund, Mikael
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Laurencikiene, J ...
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Degerman, Eva
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Stenkula, Karin ...
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Göransson, Olga
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visa färre...
- Om ämnet
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- MEDICIN OCH HÄLSOVETENSKAP
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MEDICIN OCH HÄLS ...
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och Klinisk medicin
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och Endokrinologi oc ...
- Artiklar i publikationen
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Cellular Signall ...
- Av lärosätet
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Lunds universitet
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Karolinska Institutet