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Adipose overexpression of desnutrin promotes fatty acid use and attenuates diet-induced obesity.
Diabetes 58, 855-866 (2009)
OBJECTIVE: To investigate the role of desnutrin in adipose tissue triacylglycerol (TAG) and fatty acid metabolism. RESEARCH DESIGN AND METHODS: We generated transgenic mice overexpressing desnutrin (also called adipose triglyceride lipase [ATGL]) in adipocytes (aP2-desnutrin) and also performed adenoviral-mediated overexpression of desnutrin in 3T3-L1CARDelta1 adipocytes. RESULTS: aP2-desnutrin mice were leaner with decreased adipose tissue TAG content and smaller adipocyte size. Overexpression of desnutrin increased lipolysis but did not result in increased serum nonesterified fatty acid levels or ectopic TAG storage. We found increased cycling between diacylglycerol (DAG) and TAG and increased fatty acid oxidation in adipocytes from these mice, as well as improved insulin sensitivity. CONCLUSIONS: We show that by increasing lipolysis, desnutrin overexpression causes reduced adipocyte TAG content and attenuation of diet-induced obesity. Desnutrin-mediated lipolysis promotes fatty acid oxidation and re-esterification within adipocytes.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Sprache
englisch
Veröffentlichungsjahr
2009
HGF-Berichtsjahr
0
ISSN (print) / ISBN
0012-1797
e-ISSN
1939-327X
Zeitschrift
Diabetes
Quellenangaben
Band: 58,
Heft: 4,
Seiten: 855-866
Verlag
American Diabetes Association
Verlagsort
Alexandria, VA.
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Pancreatic Islet Research (IPI)
PubMed ID
19136649
Erfassungsdatum
2009-12-31