Thioesterase superfamily member 2 promotes hepatic insulin resistance in the setting of glycerol-3-phosphate acyltransferase 1-induced steatosis.


Journal

The Journal of biological chemistry
ISSN: 1083-351X
Titre abrégé: J Biol Chem
Pays: United States
ID NLM: 2985121R

Informations de publication

Date de publication:
08 02 2019
Historique:
received: 02 08 2018
revised: 21 11 2018
pubmed: 14 12 2018
medline: 14 5 2019
entrez: 8 12 2018
Statut: ppublish

Résumé

Hepatic insulin resistance in the setting of steatosis is attributable at least in part to the accumulation of bioactive lipids that suppress insulin signaling. The mitochondria-associated glycerol-3-phosphate acyltransferase 1 (GPAT1) catalyzes the first committed step in glycerolipid synthesis, and its activity diverts fatty acids from mitochondrial β-oxidation. GPAT1 overexpression in mouse liver leads to hepatic steatosis even in the absence of overnutrition. The mice develop insulin resistance owing to the generation of saturated diacylglycerol and phosphatidic acid molecular species that reduce insulin signaling by activating PKCϵ and by suppressing mTORC2, respectively. Them2, a mitochondria-associated acyl-CoA thioesterase, also participates in the trafficking of fatty acids into oxidative

Identifiants

pubmed: 30523156
pii: S0021-9258(20)36846-0
doi: 10.1074/jbc.RA118.005184
pmc: PMC6369296
doi:

Substances chimiques

Fatty Acids 0
Glycerides 0
Glycerol-3-Phosphate O-Acyltransferase EC 2.3.1.15
Protein Kinase C-epsilon EC 2.7.11.13
ACOT13 protein, human EC 3.1.2.-
Thiolester Hydrolases EC 3.1.2.-

Types de publication

Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

2009-2020

Subventions

Organisme : American Heart Association-American Stroke Association
ID : 18POST33990445
Pays : United States
Organisme : NIDDK NIH HHS
ID : R01 DK056598
Pays : United States
Organisme : NIDDK NIH HHS
ID : R01 DK056626
Pays : United States
Organisme : NIDDK NIH HHS
ID : R37 DK048873
Pays : United States

Informations de copyright

© 2019 Tillander et al.

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Auteurs

Veronika Tillander (V)

From the Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medical College, New York, New York 10021.
the Division of Clinical Chemistry, Department of Laboratory Medicine, Karolinska Institute, 14152 Huddinge, Sweden.

Akihiro Miniami (A)

From the Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medical College, New York, New York 10021.
the Department of Gastroenterology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan, and.

Michele Alves-Bezerra (M)

From the Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medical College, New York, New York 10021.

Rosalind A Coleman (RA)

the Department of Nutrition, University of North Carolina, Chapel Hill, North Carolina 27599.

David E Cohen (DE)

From the Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medical College, New York, New York 10021, dcohen@med.cornell.edu.

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Classifications MeSH