Cited by 1,053Adipokines, Inflammation, and Metabolic DiseasesAdipose Tissue and MetabolismCardiovascular Disease and Adiposity

Metabolic Dysregulation and Adipose Tissue Fibrosis: Role of Collagen VI

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Khan, Tayeba, Muise, Eric S., Iyengar, Puneeth, Wang, Zhao V., Chandalia, Manisha, Abate, Nicola, Zhang, Bei B., Bonaldo, Paolo +2 more·2009·Molecular and Cellular Biology

Abstract

Adipocytes are embedded in a unique extracellular matrix whose main function is to provide mechanical support, in addition to participating in a variety of signaling events. During adipose tissue expansion, the extracellular matrix requires remodeling to accommodate adipocyte growth. Here, we demonstrate a general upregulation of several extracellular matrix components in adipose tissue in the diabetic state, therefore implicating "adipose tissue fibrosis" as a hallmark of metabolically challenged adipocytes. Collagen VI is a highly enriched extracellular matrix component of adipose tissue. The absence of collagen VI results in the uninhibited expansion of individual adipocytes and is paradoxically associated with substantial improvements in whole-body energy homeostasis, both with high-fat diet exposure and in the ob/ob background. Collectively, our data suggest that weakening the extracellular scaffold of adipocytes enables their stress-free expansion during states of positive energy balance, which is consequently associated with an improved inflammatory profile. Therefore, the disproportionate accumulation of extracellular matrix components in adipose tissue may not be merely an epiphenomenon of metabolically challenging conditions but may also directly contribute to a failure to expand adipose tissue mass during states of excess caloric intake.

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Crossref · 10.1128/mcb.01300-08

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Authors
Khan, T., Muise, E. S., Iyengar, P., Wang, Z. V., Chandalia, M., Abate, N., Zhang, B. B., Bonaldo, P., Chua, S., & Scherer, P. E.
Affiliations
  • Department of Cell Biology
  • Departments of Molecular Profiling
  • Departments of Internal Medicine
  • The University of Texas Southwestern Medical Center (US)
  • Merck & Co., Inc., Rahway, NJ, USA (United States) (US)
  • University of Padua (IT)
  • Albert Einstein College of Medicine (US)
Venue
Molecular and Cellular Biology
Published
2009-03-01
Volume
29
Issue
6
Pages
1575-1591
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W2163691580
Cited by
1,053
References
60
Citations by year
2026: 39 · 2025: 48 · 2024: 44 · 2023: 69 · 2022: 89 · 2021: 71 · 2020: 76 · 2019: 68 · 2018: 81 · 2017: 85 · 2016: 66 · 2015: 56 · 2014: 60 · 2013: 73 · 2012: 41
FWCI
20.76
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Biology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Padua Research Archive (University of Padova) (submittedVersion, other-oa)
Funders
  • University of Texas Southwestern Medical Center
  • University of Glasgow
  • Kementerian Pendidikan Nasional
  • National Institutes of Health
  • Albert Einstein College of Medicine, Yeshiva University
  • National Cancer Institute (R01CA112023)
  • National Institute of Diabetes and Digestive and Kidney Diseases (PL1DK081182, R01DK055758, T32DK007513)
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Disease and Adiposity
Keywords
adipose tissue fibrosis, collagen VI, extracellular matrix, metabolic dysfunction, diabetes mellitus, energy homeostasis, high-fat diet, ob/ob mice, adipose tissue inflammation, positive energy balance
MeSH terms
Adipose Tissue, Aging, Animals, Diabetes Mellitus, Endotoxins, Extracellular Matrix, Fibrosis, Glucose, Humans, Hyperplasia, Inflammation, Insulin, Male, Necrosis, Pancreas, Adipocytes, Mice, Knockout, Collagen Type VI, Cell Size, Mice

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