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Type III Interferons (Lambda Interferons) in Rheumatic Autoimmune Diseases.

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Type III interferons, crucial for antiviral defense, also promote autoimmunity. Their pathway activation is linked to rheumatic autoimmune diseases like lupus and Sjögren's syndrome.

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Area of Science:

  • Immunology
  • Molecular Biology
  • Rheumatology

Background:

  • Type III interferons (IFN-λ) are a recently characterized cytokine family with immune functions resembling type I interferons.
  • Understanding interferonopathies highlights the role of interferons in autoimmune diseases.
  • Type III interferons are critical for antiviral immunity, modulating innate and adaptive immune cells.

Purpose of the Study:

  • To review the current evidence on the role of type III interferons in the pathogenesis of human rheumatic autoimmune diseases.
  • To explore the mechanisms by which type III interferons contribute to autoimmunity.

Main Methods:

  • Review of existing scientific literature and evidence.
  • Analysis of molecular mechanisms of type III interferon action.
  • Correlation of type III interferon pathway activation with autoimmune disease pathogenesis.

Main Results:

  • Type III interferons modulate myeloid dendritic cells, plasmacytoid dendritic cells, regulatory T cells, plasma cells, leukocytes, and endothelial cells.
  • These modulations include upregulation of MHC molecules, enhanced PRR function, decreased Treg activity, increased antibody production, and elevated chemokine/adhesion molecule expression.
  • Type III interferon pathway activation is implicated in the pathogenesis of systemic lupus erythematosus, systemic sclerosis, and Sjögren's syndrome.

Conclusions:

  • Type III interferons possess mechanisms that can promote autoimmunity.
  • Activation of the type III interferon pathway is associated with the development of rheumatic autoimmune diseases.
  • Further research into type III interferons is crucial for understanding and potentially treating these conditions.