Abstract
Interleukin (IL)-17A is pro-inflammatory cytokine which has been identified as a noninvasive marker of the pathogenesis of non-alcoholic steatohepatitis (NASH). However, the underlying role of IL-17A in NASH progression remains unclear. This study was designed to investigate the biological function and molecular mechanism of IL-17A in the induction of NASH. The results showed that IL-17A was highly expressed in high-fat diet (HFD)-induced NASH mouse model. Intravenous injection of IL-17A exacerbated steatohepatitis process via promoting hepatocyte apoptosis. Furthermore, IL-17A-induced apoptosis was mediated by ERK1/2/p65 signaling pathway. In conclusion, we demonstrated that IL-17A-mediated ERK1/2/p65 signaling pathway was a promising target for the treatment of NASH. © 2018 IUBMB Life, 71(3):302-309, 2019.
Keywords:
ERK1/2; IL-17A; NSAH; p65.
© 2018 International Union of Biochemistry and Molecular Biology.
MeSH terms
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Animals
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Apoptosis / genetics*
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Diet, High-Fat / adverse effects
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Disease Models, Animal
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Disease Progression
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Gene Expression Regulation
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Hepatocytes / metabolism
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Hepatocytes / pathology
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Interleukin-17 / administration & dosage
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Interleukin-17 / blood
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Interleukin-17 / genetics*
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Liver / metabolism
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Liver / pathology
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Male
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Mice
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Mice, Inbred C57BL
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Mitogen-Activated Protein Kinase 1 / genetics*
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Mitogen-Activated Protein Kinase 1 / metabolism
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Mitogen-Activated Protein Kinase 3 / genetics*
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Mitogen-Activated Protein Kinase 3 / metabolism
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Non-alcoholic Fatty Liver Disease / etiology
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Non-alcoholic Fatty Liver Disease / genetics*
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Non-alcoholic Fatty Liver Disease / metabolism
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Non-alcoholic Fatty Liver Disease / pathology
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Signal Transduction
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Transcription Factor RelA / genetics*
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Transcription Factor RelA / metabolism
Substances
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Il17a protein, mouse
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Interleukin-17
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Rela protein, mouse
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Transcription Factor RelA
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Mapk1 protein, mouse
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Mitogen-Activated Protein Kinase 1
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Mitogen-Activated Protein Kinase 3