ArticleActa physiologica (Oxford, England)2010
Role of ataxia telangiectasia mutated in insulin signalling of muscle-derived cell lines and mouse soleus.
Article in Acta physiologica (Oxford, England), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 15 citations in OpenAlex.
- Stem cell models in ataxia-telangiectasia.Neural regeneration research · 2026Article
- ATM knock out alters calcium signalling and augments contraction in skeletal muscle cells differentiated from human urine-derived stem cells.Cell death discovery · 2025Article
- A role for ataxia telangiectasia mutated in insulin-independent stimulation of glucose transport.Trends in cell & molecular biology · 2017Article
- Article
- Impaired insulin-stimulated glucose transport in ATM-deficient mouse skeletal muscle.Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme · 2013Article
- Ataxia telangiectasia mutated impacts insulin-like growth factor 1 signalling in skeletal muscle.Experimental physiology · 2013Article
- ATM and GLUT1-S490 phosphorylation regulate GLUT1 mediated transport in skeletal muscle.PloS one · 2013Article
- Ataxia telangiectasia mutated influences cytochrome c oxidase activity.Biochemical and biophysical research communications · 2011Article
- A role for AMPK in increased insulin action after serum starvation.American journal of physiology. Cell physiology · 2010Article
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
Abstract
aimAtaxia telangiectasia mutated (ATM) reportedly plays a role in insulin-stimulated activation of Akt in some cell types but not in others. The role of ATM in insulin signalling has not been firmly resolved for skeletal muscle cells, for which Akt phosphorylation is a pivotal step in stimulation of glucose transport. Accordingly, our aim was to determine the role of ATM in insulin effects for cell lines derived from skeletal muscle and for skeletal muscle.
methodsWe examined insulin effects in L6 myotubes, mouse soleus, C2C12 myotubes and differentiated rhabdomyosarcoma (RD) cells in the presence and absence of a low concentration (1 microm) of the ATM inhibitor KU55933. We also compared insulin signalling in C2C12 cells expressing shRNA against ATM and control cell lines (empty vector; cells expressing non-targeting shRNA).
resultsIn L6 myotubes and mouse soleus muscle, KU55933 inhibited insulin-stimulated phosphorylation of the 160 kDa substrate of Akt (AS160) despite no effect on Akt. In contrast, KU55933 prevented insulin-stimulated Akt phosphorylation in C2C12 myotubes. Furthermore, C2C12 myotubes expressing shRNA against ATM displayed reduced insulin-stimulated Akt phosphorylation compared to controls. KU55933 also decreased insulin-stimulated Akt phosphorylation in differentiated RD cells.
conclusionThese model-dependent differences in the role of ATM in insulin action demonstrate a role of ATM in insulin-stimulated phosphorylation of Akt (in C2C12 and RD cells) but also allow the elucidation of a novel, Akt-independent role of ATM (in L6 myotubes and mouse soleus, at the level of AS160) in insulin signalling.
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