Cited by 170Liver Disease Diagnosis and TreatmentAdipokines, Inflammation, and Metabolic DiseasesLiver physiology and pathology

New role of irisin in hepatocytes: the protective effect of hepatic steatosis in vitro

Park, Min-Jung, Kim, Dong-Il, Choi, Joo-Hee, Heo, Young-Ran, Park, Soo-Hyun·2015·Cellular Signalling

Abstract

Irisin is a newly identified myokine related to exercise and the browning of white fat. Recently, it was reported that irisin serum levels are associated with intrahepatic triglyceride content, suggesting that it might have an important role in the liver. The aim of this study was to determine the role of irisin in hepatocytes. Specifically, the effect of recombinant irisin on palmitic acid (PA)-induced lipogenesis and its related signal pathways were examined in AML12 cells and mouse primary hepatocytes. In the present study, we observed the presence of irisin inside the cells in response to the treatment of recombinant irisin by flow cytometry and cell imaging technique. Recombinant irisin significantly inhibited the PA-induced increase in lipogenic markers ACC and FAS at the mRNA and protein levels, and prevented the PA-induced lipid accumulation in hepatocytes. Additionally, irisin inhibited the PA-induced increase in the expression, nuclear localization, and transcriptional activities of the master regulators of lipogenesis (LXRα and SREBP-1c). Moreover, irisin attenuated PA-induced oxidative stress, which was confirmed by measuring the expression of inflammatory markers (NFκB, COX-2, p38 MAPK, TNF, IL-6) and superoxide indicator (dihydroethidium). The preventive effects of irisin against lipogenesis and oxidative stress were mediated by the inhibition of protein arginine methyltransferase-3 (PRMT3). These findings suggested that irisin might have a beneficial role in the prevention of hepatic steatosis by altering the expression of lipogenic genes and attenuating oxidative stress in a PRMT3 dependent manner.

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Crossref · 10.1016/j.cellsig.2015.04.010

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Authors
Park, M.-J., Kim, D.-I., Choi, J.-H., Heo, Y.-R., & Park, S.-H.
Affiliations
Chonnam National University (KR)
Corresponding author
  • Heo, Young-Ran
  • Park, Soo-Hyun
Venue
Cellular Signalling
Publisher
Elsevier BV
Published
2015-09
Volume
27
Issue
9
Pages
1831-1839
ISSN
0898-6568 (ISSN-L)
OpenAlex
W2043905763
Cited by
168
References
50
Citations by year
2026: 9 · 2025: 13 · 2024: 18 · 2023: 13 · 2022: 15 · 2021: 23 · 2020: 17 · 2019: 13 · 2018: 18 · 2017: 17 · 2016: 7 · 2015: 5
FWCI
12.30
Type
journal article
Language
en
Open access
closed
Locations
  • Cellular Signalling (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
Keywords
irisin, hepatic steatosis, hepatocytes, palmitic acid, lipogenesis, oxidative stress, PRMT3, liver X receptor alpha, SREBP-1c, myokines, lipid accumulation, AML12 cells
MeSH terms
Liver X Receptors, Animals, Cell Line, Fatty Liver, Fibronectins, Cytokines, Oxidative Stress, Palmitic Acid, Hepatocytes, Mice, Sterol Regulatory Element Binding Protein 1, Orphan Nuclear Receptors

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