Wolff, G.* ; Taranko, A.E.* ; Meln, I.* ; Weinmann, J.* ; Sijmonsma, T.* ; Lerch, S.* ; Heide, D.* ; Billeter, A.T.* ; Tews, D.* ; Krunic, D.* ; Fischer-Posovszky, P.* ; Müller-Stich, B.P.* ; Herzig, S. ; Grimm, D.* ; Heikenwälder, M.* ; Kao, W.W.* ; Vegiopoulos, A.*
Diet-dependent function of the extracellular matrix proteoglycan Lumican in obesity and glucose homeostasis.
Mol. Metab. 19, 97-106 (2019)
Objective: Extracellular matrix remodeling is required for adipose expansion under increased caloric intake. In turn, inhibited expandability due to aberrant collagen deposition promotes insulin resistance and progression towards the metabolic syndrome. An emerging role for the small leucine-rich proteoglycan Lumican in metabolically driven nonalcoholic fatty liver disease sparks an interest in further understanding its role in diet-induced obesity and metabolic complications.Methods: Whole body ablation of Lumican (Lum(-/-)) gene and adeno-associated virus-mediated over-expression were used in combination with control or high fat diet to assess energy balance, glucose homeostasis as well as adipose tissue health and remodeling.Results: Lumican was found to be particularly enriched in the stromal cells isolated from murine gonadal white adipose tissue. Likewise murine and human visceral fat showed a robust increase in Lumican as compared to fat from the subcutaneous depot. Lumican null female mice exhibited moderately increased fat mass, decreased insulin sensitivity and increased liver triglycerides in a diet-dependent manner. These changes coincided with inflammation in adipose tissue and no overt effects in adipose expandability, i.e. adipocyte formation and hypertrophy. Lumican over-expression in visceral fat and liver resulted in improved insulin sensitivity and glucose clearance.Conclusions: These data indicate that Lumican may represent a functional link between the extracellular matrix, glucose homeostasis, and features of the metabolic syndrome. (C) 2018 The Authors. Published by Elsevier GmbH.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Scopus
Cited By
Altmetric
Publication type
Article: Journal article
Document type
Scientific Article
Thesis type
Editors
Keywords
Lumican ; Ecm ; Inflammation ; Obesity ; Adipose ; Insulin; Adipose-tissue; Liver; Expression; Fibrosis; Binding; Surface; Rates
Keywords plus
Language
Publication Year
2019
Prepublished in Year
2018
HGF-reported in Year
2018
ISSN (print) / ISBN
2212-8778
e-ISSN
2212-8778
ISBN
Book Volume Title
Conference Title
Conference Date
Conference Location
Proceedings Title
Quellenangaben
Volume: 19,
Issue: ,
Pages: 97-106
Article Number: ,
Supplement: ,
Series
Publisher
Elsevier
Publishing Place
Amsterdam
Day of Oral Examination
0000-00-00
Advisor
Referee
Examiner
Topic
University
University place
Faculty
Publication date
0000-00-00
Application date
0000-00-00
Patent owner
Further owners
Application country
Patent priority
Reviewing status
Peer reviewed
POF-Topic(s)
90000 - German Center for Diabetes Research
Research field(s)
Helmholtz Diabetes Center
PSP Element(s)
G-501900-251
Grants
Copyright
Erfassungsdatum
2018-11-19