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Targeting IL-33 in autoimmunity and inflammation.

Theoharis C Theoharides1, Anastasia I Petra2, Alexandra Taracanova2

  • 1Laboratory of Molecular Immunopharmacology and Drug Discovery, Department of Integrative Physiology and Pathobiology (T.C.T., A.I.P., A.T., S.P.), Graduate Program in Pharmacology and Experimental Therapeutics, Sackler School of Graduate Biomedical Sciences (T.C.T., A.T.), Department of Internal Medicine (T.C.T.), Tufts University School of Medicine, and Tufts Medical Center (T.C.T.), Boston, Massachusetts; and Immunology Division, Graduate Medical School, University of Chieti-Pescara, Chieti, Italy (P.C.) theoharis.theoharides@tufts.edu.

The Journal of Pharmacology and Experimental Therapeutics
|April 25, 2015
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Summary

Interleukin-33 (IL-33), an alarmin released by damaged cells, plays a complex role in immune diseases. Its targeted regulation is crucial for effective therapeutic strategies.

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Interleukin-33 (IL-33) is an IL-1 family cytokine.
  • Unlike IL-1, IL-33 is primarily released as an alarmin from damaged cells.
  • Activated mast cells can also release IL-33, mediating autocrine and paracrine effects.

Purpose of the Study:

  • To explore the multifaceted roles of IL-33 in immune-regulated diseases.
  • To investigate the therapeutic potential of modulating IL-33 signaling.

Main Methods:

  • Review of existing literature on IL-33 function and its involvement in various diseases.
  • Analysis of studies investigating the effects of IL-33 neutralization, receptor knockdown, and decoy receptors.

Main Results:

  • Elevated IL-33 levels are observed in conditions like asthma and rheumatoid arthritis.
  • Prolonged IL-33 elevation may offer protection in atherosclerosis by downregulating FcεRI.
  • Interventions targeting IL-33 have shown anti-inflammatory effects, but outcomes vary by tissue.

Conclusions:

  • IL-33 exhibits diverse roles in immune-mediated pathologies.
  • Selective regulation of IL-33's synthesis, release, and signaling is essential for developing effective treatments.