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TWIST1 and TWIST2 regulate glycogen storage and inflammatory genes in skeletal muscle
Section for Integrative Physiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Section for Integrative Physiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.ORCID iD: 0000-0001-8213-5459
Section for Integrative Physiology, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
Section for Integrative Physiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden / Section for Integrative Physiology, Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.ORCID iD: 0000-0002-0891-0258
2015 (English)In: Journal of Endocrinology, ISSN 0022-0795, E-ISSN 1479-6805, Vol. 224, no 3, 303-313 p.Article in journal (Refereed) Published
Abstract [en]

TWIST proteins are important for development of embryonic skeletal muscle and play a role in the metabolism of tumor and white adipose tissue. The impact of TWIST on metabolism in skeletal muscle is incompletely studied. Our aim was to assess the impact of TWIST1 and TWIST2 overexpression on glucose and lipid metabolism. In intact mouse muscle, overexpression of Twist reduced total glycogen content without altering glucose uptake. Expression of TWIST1 or TWIST2 reduced Pdk4 mRNA, while increasing mRNA levels of Il6, Tnf alpha, and Il1 beta. Phosphorylation of AKT was increased and protein abundance of acetyl CoA carboxylase ( ACC) was decreased in skeletal muscle overexpressing TWIST1 or TWIST2. Glycogen synthesis and fatty acid oxidation remained stable in C2C12 cells overexpressing TWIST1 or TWIST2. Finally, skeletal muscle mRNA levels remain unaltered in ob/ob mice, type 2 diabetic patients, or in healthy subjects before and after 3 months of exercise training. Collectively, our results indicate that TWIST1 and TWIST2 are expressed in skeletal muscle. Overexpression of these proteins impacts proteins in metabolic pathways and mRNA level of cytokines. However, skeletal muscle levels of TWIST transcripts are unaltered in metabolic diseases.

Place, publisher, year, edition, pages
2015. Vol. 224, no 3, 303-313 p.
National Category
Physiology
Identifiers
URN: urn:nbn:se:his:diva-13780DOI: 10.1530/JOE-14-0474ISI: 000349562500014PubMedID: 25663706Scopus ID: 2-s2.0-84924785728OAI: oai:DiVA.org:his-13780DiVA: diva2:1112176
Note

Erratum in TWIST1 and TWIST2 regulate glycogen storage and inflammatory genes in skeletal muscle. [J Endocrinol. 2015]

Available from: 2017-06-20 Created: 2017-06-20 Last updated: 2017-11-27Bibliographically approved

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Massart, JulieSzekeres, Ferenc L. M.Krook, Anna

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