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Related Experiment Video

Updated: Feb 1, 2026

An Adoptive Transfer Model of Rheumatoid Arthritis in Mice
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MIG in psoriatic arthritis.

G Elia1

  • 1Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy.

La Clinica Terapeutica
|December 17, 2018
PubMed
Summary

Monokine induced by interferon-gamma (MIG) plays a role in psoriatic arthritis (PsA) pathogenesis. Elevated MIG levels in PsA patients suggest its potential as a marker for disease activity and progression.

Area of Science:

  • Immunology
  • Rheumatology
  • Molecular Biology

Background:

  • Psoriatic arthritis (PsA) pathogenesis involves chemokines like Monokine induced by interferon-gamma (MIG)/CXCL9.
  • Plasma-derived dendritic cells (pDCs) express receptors for chemokines found in synovial fluid of Rheumatoid Arthritis (RA) and PsA patients.

Purpose of the Study:

  • To investigate the role of MIG and related chemokines in PsA.
  • To explore the potential of MIG as a biomarker for PsA activity and progression.

Main Methods:

  • Analysis of chemokine and receptor expression in pDCs from blood and synovial fluid.
  • Assessment of pDC chemotaxis in response to specific chemokines.
  • Evaluation of chemokine levels in PsA patients with varying disease duration.
Keywords:
CXCR3IP-10MCP-1MIGPsoriatic arthritis

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Main Results:

  • pDCs express CXCR3 and CXCR4, and their chemotaxis is stimulated by MIG, CXCL10, CXCL11, and CXCL12 found in RA and PsA synovial fluid.
  • Early PsA shows Th1 immune predominance, shifting to Th2 in long-standing disease, indicated by altered chemokine ratios.
  • High MIG levels are observed in PsA and autoimmune thyroiditis, suggesting its utility as a monitoring marker.

Conclusions:

  • MIG is implicated in PsA pathogenesis and may serve as a valuable biomarker for monitoring disease activity and progression.
  • Understanding chemokine dynamics in PsA offers potential therapeutic targets to alter disease course.