The activating receptor NKG2D is an anti-fungal pattern recognition receptor

Area of Science:

• Immunology
• Microbiology
• Infectious Diseases

Background:

• Natural Killer Group 2 Member D (NKG2D) is a key activating receptor for Natural Killer and CD8+ T cells.
• NKG2D typically recognizes stress-induced ligands on cancerous or virally infected cells.

Purpose of the Study:

• To investigate the role of NKG2D in the immune response against fungal pathogens.
• To determine if NKG2D can function as a pattern recognition receptor for fungi.

Main Methods:

• Utilized mouse models of invasive and mucosal fungal infections.
• Assessed fungal pathogen recognition by NKG2D across major fungal families (Candida, Cryptococcus, Aspergillus).

Main Results:

• NKG2D recognizes fungal pathogens from Candida, Cryptococcus, and Aspergillus species.
• Mice deficient in NKG2D exhibited extreme sensitivity to fungal infections.

Conclusions:

• NKG2D plays a critical role in the immune defense against fungal infections.
• NKG2D functions as an antifungal pattern recognition receptor, crucial for host defense.