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Updated: Mar 13, 2026

Characterization of MLKL-mediated Plasma Membrane Rupture in Necroptosis
08:55

Characterization of MLKL-mediated Plasma Membrane Rupture in Necroptosis

Published on: August 7, 2018

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The pseudokinase MLKL mediates programmed hepatocellular necrosis independently of RIPK3 during hepatitis

Claudia Günther, Gui-Wei He, Andreas E Kremer

    The Journal of Clinical Investigation
    |November 2, 2016
    PubMed

    Insights

    Programmed necrosis in liver disease involves MLKL activation. This study reveals an MLKL-dependent pathway for hepatocellular death independent of RIPK3, crucial for autoimmune hepatitis.

    Area of Science:

    • Hepatology
    • Immunology
    • Cellular Biology

    Background:

    • Necrosis and necroinflammation are key in liver diseases.
    • The role of programmed necrosis in inflammation-driven liver cell death needs clarification.

    Purpose of the Study:

    • To investigate the role of mixed lineage kinase domain-like protein (MLKL) in inflammation-dependent hepatocellular death.
    • To determine the mechanism of MLKL-driven necrosis in experimental hepatitis, particularly its independence from RIPK3.

    Main Methods:

    • Analysis of MLKL expression and activation in human autoimmune hepatitis and a murine hepatitis model.
    • Genetic and pharmacologic approaches to investigate MLKL-dependent necrosis.
    • Exploration of the role of interferon-gamma (IFN-γ) and STAT1 in MLKL induction.

    Main Results:

    • MLKL is upregulated and activated in human and murine hepatitis.
    • Hepatocellular necrosis in experimental hepatitis is driven by an MLKL-dependent pathway independent of RIPK3.
    • IFN-γ induces MLKL expression via STAT1 activation, linking it to hepatic inflammation.

    Conclusions:

    • A novel pathway for MLKL-dependent programmed necrosis, independent of RIPK3, has been identified.
    • This pathway may contribute to the pathogenesis of severe liver diseases like autoimmune hepatitis.
    • Targeting this pathway could offer new therapeutic strategies for liver inflammation.

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