Related Experiment Video

Updated: Aug 6, 2026

Activation and Measurement of NLRP3 Inflammasome Activity Using IL-1β in Human Monocyte-derived Dendritic Cells
09:04

Activation and Measurement of NLRP3 Inflammasome Activity Using IL-1β in Human Monocyte-derived Dendritic Cells

Published on: May 22, 2014

The NLRP3/IL-6/EGR2/CSF-1 Axis Regulates Macrophage Differentiation and Inflammatory Resolution in

Jiao Kong1, Hongjin Sheng1, Mingxi Li1

  • 1China-Japan Union Hospital of Jilin University, No.126 of Xiantai Street, Changchun, 130033, China.

Inflammation
|July 17, 2026
PubMed

Insights

The NLRP3 inflammasome drives macrophage differentiation and M1 polarization via the IL-6/EGR2/CSF-1 axis, impacting wound healing during Pseudomonas aeruginosa infection. Targeting this pathway may improve infected wound outcomes.

Area of Science:

  • Immunology
  • Wound Healing
  • Inflammation

Background:

  • Chronic Pseudomonas aeruginosa infection hinders wound healing through poorly understood inflammatory mechanisms.
  • The NLRP3 inflammasome's role in macrophage differentiation and inflammatory resolution during infected wound healing requires investigation.

Purpose of the Study:

  • To investigate how the NLRP3 inflammasome regulates macrophage differentiation and inflammatory resolution in Pseudomonas aeruginosa-infected wounds.
  • To elucidate the molecular mechanisms, including the IL-6/EGR2/CSF-1 axis, by which NLRP3 influences macrophage polarization and wound healing.

Main Methods:

  • Established a murine Pseudomonas aeruginosa wound infection model.
  • Assessed macrophage polarization using flow cytometry and histology.
  • Utilized CRISPR-edited cells, pharmacological modulators, and transcriptomic profiling to explore mechanistic pathways.

Main Results:

  • NLRP3 inflammasome activation was elevated in infected wounds, correlating with M1 macrophage polarization and delayed healing.
  • NLRP3 deficiency impaired monocyte-to-macrophage differentiation and M1-to-M2 transition, exacerbating healing defects.
  • IL-6 signaling promoted EGR2 nuclear translocation, which bound the CSF-1 promoter, driving macrophage differentiation.

Conclusions:

  • The NLRP3 inflammasome orchestrates macrophage differentiation and M1 polarization through the IL-6/EGR2/CSF-1 axis in infected wound healing.
  • Targeting the NLRP3 inflammasome or its downstream signaling axis presents a potential therapeutic strategy for improving outcomes in infected wounds.
Keywords:
CSF-1/CSF1R axisEGR2IL-6Infected woundMacrophageNLRP3 inflammasome

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