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Salt-inducible kina...
Salt-inducible kinases are required for glucose uptake and insulin signaling in human adipocytes
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- Säll, Johanna (author)
- Lund University,Lunds universitet,Diabetes - epigenetik,Forskargrupper vid Lunds universitet,Diabetes - Epigenetics,Lund University Research Groups
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- Lindahl, Maria (author)
- Lund University,Lunds universitet,Glukostransport och proteintrafficking,Forskargrupper vid Lunds universitet,Proteinfosforylering,Glucose Transport and Protein Trafficking,Lund University Research Groups,Protein Phosphorylation
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- Fritzen, Andreas M (author)
- University of Copenhagen
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- Fryklund, Claes (author)
- 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 (author)
- Lund University,Lunds universitet,Glukostransport och proteintrafficking,Forskargrupper vid Lunds universitet,Glucose Transport and Protein Trafficking,Lund University Research Groups
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- Nyberg, Emma (author)
- Lund University,Lunds universitet,Experimentell demensforskning,Forskargrupper vid Lunds universitet,Experimental Dementia Research,Lund University Research Groups
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- Warvsten, Anna (author)
- Lund University
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- Morén, Björn (author)
- Lund University,Lunds universitet,Glukostransport och proteintrafficking,Forskargrupper vid Lunds universitet,Glucose Transport and Protein Trafficking,Lund University Research Groups
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- Foretz, Marc (author)
- Institut Cochin
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- Kiens, Bente (author)
- University of Copenhagen
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- Stenkula, Karin G (author)
- 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 (author)
- Lund University,Lunds universitet,Proteinfosforylering,Forskargrupper vid Lunds universitet,Protein Phosphorylation,Lund University Research Groups
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(creator_code:org_t)
- 2023
- 2023
- English.
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In: Obesity. - 1930-739X. ; 31:10, s. 2515-2529
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http://dx.doi.org/10... (free)
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Abstract
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- OBJECTIVE: Salt-inducible kinase 2 (SIK2) is abundantly expressed in adipocytes and downregulated in adipose tissue from individuals with obesity or insulin resistance. The main aims of this work were to investigate the involvement of SIKs in the regulation of glucose uptake in primary mature human adipocytes and to identify mechanisms underlying this regulation.METHODS: Primary mature adipocytes were isolated from human, rat, or mouse adipose tissue and treated with pan-SIK inhibitors. Adipocytes isolated from wild type, ob/ob, and SIK2 knockout mice were also used. Glucose uptake was examined by glucose tracer assay. The insulin signaling pathway was monitored by Western blotting, co-immunoprecipitation, and total internal reflection fluorescence microscopy.RESULTS: This study demonstrates that SIK2 is downregulated in obese ob/ob mice and that SIK activity is required for intact glucose uptake in primary human and mouse adipocytes. The underlying mechanism involves direct effects on the insulin signaling pathway, likely at the level of phosphatidylinositol (3,4,5)-trisphosphate (PIP3) generation or breakdown. Moreover, lack of SIK2 alone is sufficient to attenuate glucose uptake in mouse adipocytes.CONCLUSIONS: SIK2 is required for insulin action in human adipocytes, and the mechanism includes direct effects on the insulin signaling pathway.
Subject headings
- 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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Obesity
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- By the author/editor
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Säll, Johanna
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Lindahl, Maria
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Fritzen, Andreas ...
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Fryklund, Claes
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Kopietz, Franzis ...
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Nyberg, Emma
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show more...
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Warvsten, Anna
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Morén, Björn
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Foretz, Marc
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Kiens, Bente
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Stenkula, Karin ...
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Göransson, Olga
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- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Clinical Medicin ...
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and Endocrinology an ...
- Articles in the publication
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Obesity
- By the university
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Lund University