Hepatic Inositol 1,4,5 Trisphosphate Receptor Type 1 Mediates Fatty Liver.

ABSTRACT: Fatty liver is the most common type of liver disease, affecting nearly one third of the US population and more than half a billion people worldwide. Abnormalities in ER calcium handling and mitochondrial function each have been implicated in abnormal lipid droplet formation. Here we show that the type 1 isoform of the inositol 1,4,5-trisphosphate receptor (InsP₃R1) specifically links ER calcium release to mitochondrial calcium signaling and lipid droplet formation in hepatocytes. Moreover, liver-specific InsP₃R1 knockout mice have impaired mitochondrial calcium signaling, decreased hepatic triglycerides, reduced lipid droplet formation and are resistant to development of fatty liver. Patients with non-alcoholic steatohepatitis, the most malignant form of fatty liver,

SUBMITTER: Feriod CN 

PROVIDER: S-EPMC5613674 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature