NK cell autoreactivity and autoimmune diseases

Area of Science:

• Immunology
• Autoimmunity

Background:

• Natural killer (NK) cells possess activating and inhibiting receptors that modulate responses to autologous cells.
• Viral infections and dysregulation of innate immunity are implicated in triggering autoimmune diseases.
• NK cells, as part of innate lymphoid cells (ILCs), contribute to tissue homeostasis through cytokine secretion.

Purpose of the Study:

• To review the evidence supporting the role of NK cells in autoimmune diseases.
• To explore the interplay between NK cells and self-cells in the initiation of autoimmunity.

Main Methods:

• Review of existing scientific literature on NK cells and autoimmunity.
• Analysis of receptor interactions and cellular crosstalk in autoimmune pathogenesis.

Main Results:

• NK cells play a regulatory role in adaptive immunity.
• NK cells can damage healthy host cells via activating receptors, independent of infection or neoplasia.
• Interactions between ILCs, extracellular matrix, and mesenchymal stromal cells are vital for homeostasis.

Conclusions:

• NK cells are significantly involved in the pathogenesis of organ-specific and systemic autoimmune diseases.
• The complex interplay between NK cells and self-components is a key factor in triggering autoimmunity.