Leukemia inhibitory factor increases glucose uptake in mouse skeletal muscle

Nina Brandt, Hayley M O'Neill, Maximilian Kleinert, Peter Schjerling, Erik Vernet, Gregory R Steinberg, Erik A Richter, Sebastian B Jørgensen

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Abstract

Members of the IL-6 family, IL-6 and ciliary neurotrophic factor (CNTF), have been shown to increase glucose uptake and fatty acid oxidation in skeletal muscle. However, the metabolic effects of another family member, leukemia inhibitory factor (LIF), are not well characterized. Effects of LIF on skeletal muscle glucose uptake and palmitate oxidation and signaling were investigated in ex vivo incubated mouse soleus and EDL muscles from muscle-specific AMPKα2 kinase-dead, muscle-specific SOCS3 knockout, and lean and high-fat-fed mice. Inhibitors were used to investigate involvement of specific signaling pathways. LIF increased muscle glucose uptake in dose (50-5,000 pM/l) and time-dependent manners with maximal effects at the 30-min time point. LIF increased Akt Ser(473) phosphorylation (P) in soleus and EDL, whereas AMPK Thr(172) P was unaffected. Incubation with parthenolide abolished LIF-induced glucose uptake and STAT3 Tyr(705) P, whereas incubation with LY-294002 and wortmannin suppressed both basal and LIF-induced glucose uptake and Akt Ser(473) P, indicating that JAK and PI 3-kinase signaling is required for LIF-stimulated glucose uptake. Incubation with rapamycin and AZD8055 indicated that mammalian target of rapamycin complex (mTORC)2, but not mTORC1, also is required for LIF-stimulated glucose uptake. In contrast to CNTF, LIF stimulation did not alter palmitate oxidation. LIF-stimulated glucose uptake was maintained in EDL from obese insulin-resistant mice, whereas soleus developed LIF resistance. Lack of SOCS3 and AMPKα2 did not affect LIF-stimulated glucose uptake. In conclusion, LIF acutely increased muscle glucose uptake by a mechanism potentially involving the PI 3-kinase/mTORC2/Akt pathway and is not impaired in EDL muscle from obese insulin-resistant mice.

Original languageEnglish
Pages (from-to)E142-E153
JournalAmerican Journal of Physiology - Endocrinology and Metabolism
Volume309
Issue number2
DOIs
Publication statusPublished - 15 Jul 2015
Externally publishedYes

Fingerprint

Leukemia Inhibitory Factor
Skeletal Muscle
Glucose
Muscles
Ciliary Neurotrophic Factor
Palmitates
Phosphatidylinositol 3-Kinases
Interleukin-6
Insulin
AMP-Activated Protein Kinases
2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-one
Sirolimus

Cite this

Brandt, Nina ; O'Neill, Hayley M ; Kleinert, Maximilian ; Schjerling, Peter ; Vernet, Erik ; Steinberg, Gregory R ; Richter, Erik A ; Jørgensen, Sebastian B. / Leukemia inhibitory factor increases glucose uptake in mouse skeletal muscle. In: American Journal of Physiology - Endocrinology and Metabolism. 2015 ; Vol. 309, No. 2. pp. E142-E153.
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title = "Leukemia inhibitory factor increases glucose uptake in mouse skeletal muscle",
abstract = "Members of the IL-6 family, IL-6 and ciliary neurotrophic factor (CNTF), have been shown to increase glucose uptake and fatty acid oxidation in skeletal muscle. However, the metabolic effects of another family member, leukemia inhibitory factor (LIF), are not well characterized. Effects of LIF on skeletal muscle glucose uptake and palmitate oxidation and signaling were investigated in ex vivo incubated mouse soleus and EDL muscles from muscle-specific AMPKα2 kinase-dead, muscle-specific SOCS3 knockout, and lean and high-fat-fed mice. Inhibitors were used to investigate involvement of specific signaling pathways. LIF increased muscle glucose uptake in dose (50-5,000 pM/l) and time-dependent manners with maximal effects at the 30-min time point. LIF increased Akt Ser(473) phosphorylation (P) in soleus and EDL, whereas AMPK Thr(172) P was unaffected. Incubation with parthenolide abolished LIF-induced glucose uptake and STAT3 Tyr(705) P, whereas incubation with LY-294002 and wortmannin suppressed both basal and LIF-induced glucose uptake and Akt Ser(473) P, indicating that JAK and PI 3-kinase signaling is required for LIF-stimulated glucose uptake. Incubation with rapamycin and AZD8055 indicated that mammalian target of rapamycin complex (mTORC)2, but not mTORC1, also is required for LIF-stimulated glucose uptake. In contrast to CNTF, LIF stimulation did not alter palmitate oxidation. LIF-stimulated glucose uptake was maintained in EDL from obese insulin-resistant mice, whereas soleus developed LIF resistance. Lack of SOCS3 and AMPKα2 did not affect LIF-stimulated glucose uptake. In conclusion, LIF acutely increased muscle glucose uptake by a mechanism potentially involving the PI 3-kinase/mTORC2/Akt pathway and is not impaired in EDL muscle from obese insulin-resistant mice.",
author = "Nina Brandt and O'Neill, {Hayley M} and Maximilian Kleinert and Peter Schjerling and Erik Vernet and Steinberg, {Gregory R} and Richter, {Erik A} and J{\o}rgensen, {Sebastian B}",
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Brandt, N, O'Neill, HM, Kleinert, M, Schjerling, P, Vernet, E, Steinberg, GR, Richter, EA & Jørgensen, SB 2015, 'Leukemia inhibitory factor increases glucose uptake in mouse skeletal muscle' American Journal of Physiology - Endocrinology and Metabolism, vol. 309, no. 2, pp. E142-E153. https://doi.org/10.1152/ajpendo.00313.2014

Leukemia inhibitory factor increases glucose uptake in mouse skeletal muscle. / Brandt, Nina; O'Neill, Hayley M; Kleinert, Maximilian; Schjerling, Peter; Vernet, Erik; Steinberg, Gregory R; Richter, Erik A; Jørgensen, Sebastian B.

In: American Journal of Physiology - Endocrinology and Metabolism, Vol. 309, No. 2, 15.07.2015, p. E142-E153.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Leukemia inhibitory factor increases glucose uptake in mouse skeletal muscle

AU - Brandt, Nina

AU - O'Neill, Hayley M

AU - Kleinert, Maximilian

AU - Schjerling, Peter

AU - Vernet, Erik

AU - Steinberg, Gregory R

AU - Richter, Erik A

AU - Jørgensen, Sebastian B

N1 - Copyright © 2015 the American Physiological Society.

PY - 2015/7/15

Y1 - 2015/7/15

N2 - Members of the IL-6 family, IL-6 and ciliary neurotrophic factor (CNTF), have been shown to increase glucose uptake and fatty acid oxidation in skeletal muscle. However, the metabolic effects of another family member, leukemia inhibitory factor (LIF), are not well characterized. Effects of LIF on skeletal muscle glucose uptake and palmitate oxidation and signaling were investigated in ex vivo incubated mouse soleus and EDL muscles from muscle-specific AMPKα2 kinase-dead, muscle-specific SOCS3 knockout, and lean and high-fat-fed mice. Inhibitors were used to investigate involvement of specific signaling pathways. LIF increased muscle glucose uptake in dose (50-5,000 pM/l) and time-dependent manners with maximal effects at the 30-min time point. LIF increased Akt Ser(473) phosphorylation (P) in soleus and EDL, whereas AMPK Thr(172) P was unaffected. Incubation with parthenolide abolished LIF-induced glucose uptake and STAT3 Tyr(705) P, whereas incubation with LY-294002 and wortmannin suppressed both basal and LIF-induced glucose uptake and Akt Ser(473) P, indicating that JAK and PI 3-kinase signaling is required for LIF-stimulated glucose uptake. Incubation with rapamycin and AZD8055 indicated that mammalian target of rapamycin complex (mTORC)2, but not mTORC1, also is required for LIF-stimulated glucose uptake. In contrast to CNTF, LIF stimulation did not alter palmitate oxidation. LIF-stimulated glucose uptake was maintained in EDL from obese insulin-resistant mice, whereas soleus developed LIF resistance. Lack of SOCS3 and AMPKα2 did not affect LIF-stimulated glucose uptake. In conclusion, LIF acutely increased muscle glucose uptake by a mechanism potentially involving the PI 3-kinase/mTORC2/Akt pathway and is not impaired in EDL muscle from obese insulin-resistant mice.

AB - Members of the IL-6 family, IL-6 and ciliary neurotrophic factor (CNTF), have been shown to increase glucose uptake and fatty acid oxidation in skeletal muscle. However, the metabolic effects of another family member, leukemia inhibitory factor (LIF), are not well characterized. Effects of LIF on skeletal muscle glucose uptake and palmitate oxidation and signaling were investigated in ex vivo incubated mouse soleus and EDL muscles from muscle-specific AMPKα2 kinase-dead, muscle-specific SOCS3 knockout, and lean and high-fat-fed mice. Inhibitors were used to investigate involvement of specific signaling pathways. LIF increased muscle glucose uptake in dose (50-5,000 pM/l) and time-dependent manners with maximal effects at the 30-min time point. LIF increased Akt Ser(473) phosphorylation (P) in soleus and EDL, whereas AMPK Thr(172) P was unaffected. Incubation with parthenolide abolished LIF-induced glucose uptake and STAT3 Tyr(705) P, whereas incubation with LY-294002 and wortmannin suppressed both basal and LIF-induced glucose uptake and Akt Ser(473) P, indicating that JAK and PI 3-kinase signaling is required for LIF-stimulated glucose uptake. Incubation with rapamycin and AZD8055 indicated that mammalian target of rapamycin complex (mTORC)2, but not mTORC1, also is required for LIF-stimulated glucose uptake. In contrast to CNTF, LIF stimulation did not alter palmitate oxidation. LIF-stimulated glucose uptake was maintained in EDL from obese insulin-resistant mice, whereas soleus developed LIF resistance. Lack of SOCS3 and AMPKα2 did not affect LIF-stimulated glucose uptake. In conclusion, LIF acutely increased muscle glucose uptake by a mechanism potentially involving the PI 3-kinase/mTORC2/Akt pathway and is not impaired in EDL muscle from obese insulin-resistant mice.

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DO - 10.1152/ajpendo.00313.2014

M3 - Article

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