Cited by 140Adipokines, Inflammation, and Metabolic DiseasesMuscle Physiology and DisordersAdipose Tissue and Metabolism

The effects of a soluble activin type IIB receptor on obesity and insulin sensitivity

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Akpan, I, Goncalves, M D, Dhir, R, Yin, X, Pistilli, E E, Bogdanovich, S, Khurana, T S, Ucran, J +2 more·2009·International Journal of Obesity

Abstract

Background Myostatin, also known as Growth and Differentiation Factor 8, is a secreted protein that inhibits muscle growth. Disruption of myostatin signaling increases muscle mass and decreases glucose, but it is unclear whether these changes are related. We treated mice on chow and high-fat diets with a soluble activin receptor type IIB (ActRIIB, RAP-031), which is a putative endogenous signaling receptor for myostatin and other ligands of the TGF-beta superfamily.Results After 4 weeks, RAP-031 increased lean and muscle mass, grip strength and contractile force. RAP-031 enhanced the ability of insulin to suppress glucose production under clamp conditions in high-fat fed mice, but did not significantly change insulin-mediated glucose disposal. The hepatic insulin-sensitizing effect of RAP-031 treatment was associated with increased adiponectin levels. RAP-031 treatment for 10 weeks further increased muscle mass and drastically reduced fat content in mice on either chow or high-fat diet. RAP-031 suppressed hepatic glucose production and increased peripheral glucose uptake in chow-fed mice. In contrast, RAP-031 suppressed glucose production with no apparent change in glucose disposal in high-fat-diet mice.Conclusion Our findings show that disruption of ActRIIB signaling is a viable pharmacological approach for treating obesity and diabetes.

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Authors
Akpan, I., Goncalves, M. D., Dhir, R., Yin, X., Pistilli, E. E., Bogdanovich, S., Khurana, T. S., Ucran, J., Lachey, J., & Ahima, R. S.
Affiliations
  • University of Pennsylvania Health System (US)
  • University of Pennsylvania (US)
  • Acceleron Pharma (United States) (US)
Corresponding author
Ahima, R S
Venue
International Journal of Obesity
Published
2009-08-11
Volume
33
Issue
11
Pages
1265-1273
ISSN
  • 0307-0565 (ISSN-L)
  • 1476-5497
OpenAlex
W2050592095
Cited by
140
References
39
Citations by year
2026: 4 · 2025: 1 · 2024: 8 · 2023: 7 · 2022: 4 · 2021: 8 · 2020: 9 · 2019: 6 · 2018: 4 · 2017: 4 · 2016: 7 · 2015: 12 · 2014: 17 · 2013: 12 · 2012: 10
FWCI
8.28
Type
journal article
Language
en
Open access
Locations
  • International Journal of Obesity (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (P01DK049210, R01DK062348, P30 DK 19525, P30DK019525)
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
myostatin, obesity, insulin sensitivity, high-fat diet, hepatic glucose production, glucose uptake, muscle mass, adiponectin, TGF-beta superfamily, diabetes mellitus
MeSH terms
Animals, Insulin Resistance, Male, Mice, Inbred C57BL, Obesity, Solubility, Glucose Clamp Technique, Signal Transduction, Case-Control Studies, Muscle, Skeletal, Activin Receptors, Type II, Mice, Myostatin

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