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Updated: Jul 10, 2026

Activation and Measurement of NLRP3 Inflammasome Activity Using IL-1β in Human Monocyte-derived Dendritic Cells
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α-amanitin induces hepatotoxicity via PPAR-γ inhibition and NLRP3 inflammasome activation

Haowei Wang1, Huijie Zhang1, Lin Miao1

  • 1Department of Forensic Medicine, School of Forensic Medicine, Kunming Medical University, Kunming, China.

Ecotoxicology and Environmental Safety
|January 25, 2025
PubMed

Insights

Mushroom poisoning from α-amanitin causes liver damage by activating the NLRP3 inflammasome. Inhibiting NLRP3 or boosting PPAR-γ may protect against this severe hepatotoxicity.

Area of Science:

  • Toxicology
  • Hepatology
  • Immunology

Background:

  • Mushroom poisoning, often caused by α-amanitin, is a significant global health issue.
  • Severe cases result in liver damage (hepatotoxicity) and can be fatal.
  • Understanding the molecular mechanisms of α-amanitin-induced liver injury is crucial for developing treatments.

Purpose of the Study:

  • To investigate the role of the NLRP3 inflammasome and PPAR-γ in α-amanitin-induced hepatotoxicity.
  • To explore potential therapeutic strategies targeting these pathways.

Main Methods:

  • In vitro studies using L-02 cells to assess cell viability and inflammatory markers.
  • In vivo studies using a mouse model to evaluate liver injury and treatment effects.
  • Pharmacological inhibition of NLRP3 (MCC950) and PPAR-γ (GW9662) was employed.

Main Results:

  • α-amanitin reduced cell viability and activated the NLRP3 inflammasome, increasing IL-18 and IL-1β production.
  • NLRP3 inhibition (MCC950) protected cells and mice from α-amanitin-induced liver injury.
  • PPAR-γ knockdown or inhibition exacerbated liver damage, indicating a protective role.

Conclusions:

  • α-amanitin induces hepatotoxicity via NLRP3 inflammasome activation.
  • PPAR-γ plays a protective role in mitigating α-amanitin-induced liver inflammation.
  • Targeting the NLRP3 inflammasome and modulating PPAR-γ activity represent potential therapeutic avenues for mushroom poisoning.
Keywords:
HepatotoxicityInflammationNLRP3 inflammasomePPAR-γα-Amanitin

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