Related Experiment Video

Updated: Jun 4, 2025

Detection of Inflammasome Activation and Pyroptotic Cell Death in Murine Bone Marrow-derived Macrophages
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Detection of Inflammasome Activation and Pyroptotic Cell Death in Murine Bone Marrow-derived Macrophages

Published on: May 21, 2018

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MAP Kinase Signaling at the Crossroads of Inflammasome Activation

Alex Vervaeke1, Mohamed Lamkanfi1

  • 1Department of Internal Medicine and Paediatrics, Ghent University, Ghent, Belgium.

Immunological Reviews
|January 4, 2025
PubMed

Insights

Mitogen-activated protein kinase (MAPK) signaling tightly regulates inflammasomes, key immune sensors. This review details how MAPK pathways control NLRP3 and NLRP1 inflammasome activation and bacterial toxin manipulation.

Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Signaling

Background:

  • Inflammasomes are critical for host defense and inflammation, necessitating precise regulation.
  • Mitogen-activated protein kinase (MAPK) signaling pathways are increasingly recognized as key regulators of inflammasome function.

Purpose of the Study:

  • To review the multifaceted roles of MAPK signaling in modulating inflammasome activation.
  • To highlight recent advances in understanding MAPK-mediated regulation of NLRP3 and NLRP1 inflammasomes.
  • To discuss microbial manipulation of MAPK-inflammasome crosstalk.

Main Methods:

  • Literature review of recent research on MAPK signaling and inflammasome activation.
  • Focus on specific MAPK pathways (ERK1, JNK, TAK1, ZAKα) and their targets (AP-1, NLRP3, NLRP1).
  • Analysis of host-pathogen interactions involving Bacillus anthracis lethal toxin (LeTx).

Main Results:

  • MAPK pathways, including AP-1, ERK1, JNK, and TAK1, are crucial for NLRP3 inflammasome priming, licensing, and activation.
  • The MAP3K kinase ZAKα links ribosomal stress to human NLRP1 inflammasome activation.
  • Bacillus anthracis lethal toxin exploits MAPK signaling to induce macrophage apoptosis, a mechanism countered by rodent Nlrp1b inflammasome activation.

Conclusions:

  • MAPK signaling is a central hub for integrating diverse stimuli and regulating inflammasome activation.
  • Understanding MAPK-inflammasome interactions provides insights into inflammatory diseases and host-pathogen defense.
  • Targeting MAPK pathways may offer therapeutic strategies for inflammatory disorders and infectious diseases.
Keywords:
JNKMAP kinaseTAK1inflammasomeinflammationp38pyroptosis

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