Cited by 726Adipokines, Inflammation, and Metabolic DiseasesAdipose Tissue and MetabolismLipid metabolism and biosynthesis

The DOI matches its Crossref record; 54 of the 54 references it cites were found in a registry or an index.

Weight loss and lipolysis promote a dynamic immune response in murine adipose tissue

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Abstract

Obesity elicits an immune response characterized by myeloid cell recruitment to key metabolic organs, including adipose tissue. However, the response of immune cells to nonpathologic metabolic stimuli has been less well studied, and the factors that regulate the metabolic-dependent accumulation of immune cells are incompletely understood. Here we characterized the response of adipose tissue macrophages (ATMs) to weight loss and fasting in mice and identified a role for lipolysis in ATM recruitment and accumulation. We found that the immune response to weight loss was dynamic; caloric restriction of high-fat diet-fed mice led to an initial increase in ATM recruitment, whereas ATM content decreased following an extended period of weight loss. The peak in ATM number coincided with the peak in the circulating concentrations of FFA and adipose tissue lipolysis, suggesting that lipolysis drives ATM accumulation. Indeed, fasting or pharmacologically induced lipolysis rapidly increased ATM accumulation, adipose tissue chemoattractant activity, and lipid uptake by ATMs. Conversely, dietary and genetic manipulations that reduced lipolysis decreased ATM accumulation. Depletion of macrophages in adipose tissue cultures increased expression of adipose triglyceride lipase and genes regulated by FFA, and increased lipolysis. These data suggest that local lipid fluxes are central regulators of ATM recruitment and that once recruited, ATMs form lipid-laden macrophages that can buffer local increases in lipid concentration.

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Metadata

Authors
Kosteli, A., Sugaru, E., Haemmerle, G., Martin, J. F., Lei, J., Zechner, R., & Ferrante, A. W.
Affiliations
  • Columbia University Irving Medical Center (US)
  • University of Graz (AT)
Corresponding author
Ferrante, Anthony W.
Venue
Journal of Clinical Investigation
Published
2010-10-01
Volume
120
Issue
10
Pages
3466-3479
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2129973062
Cited by
726
References
54
Citations by year
2026: 19 · 2025: 38 · 2024: 36 · 2023: 33 · 2022: 31 · 2021: 47 · 2020: 51 · 2019: 45 · 2018: 47 · 2017: 51 · 2016: 48 · 2015: 53 · 2014: 48 · 2013: 63 · 2012: 62
FWCI
41.55
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Russell Berrie Foundation
  • National Institutes of Health (DK026687, DK066525)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK-063608, R56DK066525, DK026687, (DK066525, P30DK026687, P30DK063608, R01DK066525)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Physiology (medical) › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
Keywords
adipose tissue macrophages, lipolysis, weight loss, fasting, caloric restriction, obesity, fatty acid uptake, adipose triglyceride lipase, myeloid cell recruitment, lipid metabolism, high-fat diet, macrophage lipid accumulation, chemoattraction
MeSH terms
Acyltransferases, Adipose Tissue, Animals, Carboxylic Ester Hydrolases, Cell Movement, Fatty Acids, Nonesterified, Lipase, Lipolysis, Macrophages, Male, Mice, Inbred C57BL, Weight Loss, Mice

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