Hepatic Rab24 controls blood glucose homeostasis via improving mitochondrial plasticity.
Adiposity
Adult
Animals
Autophagy
Blood Glucose
/ metabolism
Cholesterol
/ blood
Female
Homeostasis
Humans
Lipid Metabolism
/ genetics
Male
Mice
Mice, Inbred C57BL
Mice, Knockout
Mitochondria, Liver
/ metabolism
Non-alcoholic Fatty Liver Disease
/ metabolism
Obesity
/ metabolism
Up-Regulation
rab GTP-Binding Proteins
/ genetics
Journal
Nature metabolism
ISSN: 2522-5812
Titre abrégé: Nat Metab
Pays: Germany
ID NLM: 101736592
Informations de publication
Date de publication:
10 2019
10 2019
Historique:
received:
29
08
2018
accepted:
10
09
2019
entrez:
23
7
2020
pubmed:
23
7
2020
medline:
1
1
2021
Statut:
ppublish
Résumé
Non-alcoholic fatty liver disease (NAFLD) represents a key feature of obesity-related type 2 diabetes with increasing prevalence worldwide. To our knowledge, no treatment options are available to date, paving the way for more severe liver damage, including cirrhosis and hepatocellular carcinoma. Here, we show an unexpected function for an intracellular trafficking regulator, the small Rab GTPase Rab24, in mitochondrial fission and activation, which has an immediate impact on hepatic and systemic energy homeostasis. RAB24 is highly upregulated in the livers of obese patients with NAFLD and positively correlates with increased body fat in humans. Liver-selective inhibition of Rab24 increases autophagic flux and mitochondrial connectivity, leading to a strong improvement in hepatic steatosis and a reduction in serum glucose and cholesterol levels in obese mice. Our study highlights a potential therapeutic application of trafficking regulators, such as RAB24, for NAFLD and establishes a conceptual functional connection between intracellular transport and systemic metabolic dysfunction.
Identifiants
pubmed: 32694843
doi: 10.1038/s42255-019-0124-x
pii: 10.1038/s42255-019-0124-x
doi:
Substances chimiques
Blood Glucose
0
Cholesterol
97C5T2UQ7J
Rab24 protein, mouse
EC 3.6.1-
RAB24 protein, human
EC 3.6.1.-
rab GTP-Binding Proteins
EC 3.6.5.2
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1009-1026Références
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