Cited by 42Adipose Tissue and MetabolismAdipokines, Inflammation, and Metabolic DiseasesHormonal and reproductive studies

Body composition changes and inhibition of fat development in vivo implicates androgen in regulation of stem cell lineage allocation

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Semirale, Anthony A., Zhang, Xiao‐Wei, Wiren, Kristine M.·2011·Journal of Cellular Biochemistry

Abstract

Androgens regulate body composition in youth and declining testosterone that occurs with aging is associated with muscle wasting, increased fat mass and osteopenia. Transgenic mice with targeted androgen receptor (AR) over‐expression in mesenchymal stem cells (MSC) were generated to explore the role of androgen signaling in the regulation of body composition. Transgenic males, but not females, were shorter and have reduced body weight and visceral fat accumulation. Dual‐energy X‐ray absorptiometry (DXA) revealed significant reductions in fat mass with a reciprocal increase in lean mass, yet no difference in food consumption or locomotor activity was observed. Adipose tissue weight was normal in brown fat but reduced in both gonadal and perirenal depots, and reduced hyperplasia was observed with smaller adipocyte size in visceral and subcutaneous white adipose tissue. Although serum leptin, adiponectin, triglyceride, and insulin levels were no different between the genotypes, intraperitoneal glucose tolerance testing (IPGTT) showed improved glucose clearance in transgenic males. High levels of the AR transgene are detected in MSCs but not in mature fat tissue. Reduced fibroblast colony forming units indicate fewer progenitor cells resident in the marrow in vivo. Precocious expression of glucose transporter 4 (GLUT4), peroxisome proliferator‐activated receptor γ (PPARγ), and CCAAT enhancer‐binding protein α (C/EBPα) was observed in proliferating precursor cultures from transgenic mice compared to controls. In more mature cultures, there was little difference between the genotypes. We propose a mechanism where enhanced androgen sensitivity can alter lineage commitment in vivo to reduce progenitor number and fat development, while increasing the expression of key factors to promote smaller adipocytes with improved glucose clearance. J. Cell. Biochem. 112: 1773–1786, 2011. © 2011 Wiley‐Liss, Inc.

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Authors
Semirale, A. A., Zhang, X., & Wiren, K. M.
Affiliations
Oregon Health & Science University (US)
Corresponding author
Wiren, Kristine M.
Venue
Journal of Cellular Biochemistry
Publisher
Wiley
Published
2011-06-07
Volume
112
Issue
7
Pages
1773-1786
ISSN
  • 0730-2312 (ISSN-L)
  • 1097-4644
OpenAlex
W2076433997
Cited by
42
References
54
Citations by year
2024: 3 · 2023: 2 · 2022: 2 · 2021: 1 · 2020: 1 · 2019: 1 · 2018: 2 · 2017: 8 · 2016: 1 · 2015: 1 · 2014: 5 · 2013: 4 · 2012: 6
FWCI
4.15
Type
journal article
Language
en
Open access
Locations
  • Journal of Cellular Biochemistry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Department of Veterans Affairs
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK067541)
Topics
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal and reproductive studies
Keywords
androgen receptor, androgens, mesenchymal stem cells, body composition, fat mass, visceral adipose tissue, adipocyte size, glucose tolerance, progenitor cells, PPARγ, C/EBPα, GLUT4, aging, muscle atrophy, osteopenia
MeSH terms
Animals, Blood Glucose, Body Composition, Body Weight, Bone Marrow Cells, Cell Differentiation, Colony-Forming Units Assay, Eating, Female, Glucose Tolerance Test, Insulin, Male, Mice, Transgenic, Motor Activity, Receptors, Androgen, Recombinant Proteins, Skin, Testis, Cell Lineage, Cell Size, Adiposity, Adipogenesis, Mice, Mesenchymal Stem Cells

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