Table 1.
Human pattern recognition receptors and cell types involved in antifungal immune responses (reviewed in [1])
Fungal pathogen | Routes of infection | Key PAMPs | PRRs | Cell types that express PRRs |
---|---|---|---|---|
Candida albicans | Intestine, skin, mucosal surfaces | β-1,3-glucan, O-mannan, N-mannan, chitin, mannose | TLRs (− 2, −4), CLRs (dectin-1, − 2, mincle [7], MR, DC-SIGN, Mcl), NLRs (NLRP3, 4,10), CR3, FcγR, galectin-3, MDA5 | Monocytes, macrophages, dendritic cells, neutrophils, mast cells, subset of T cells, B cells, endothelial cells, epithelial cells, gut resident CX3CR1+ mononuclear phagocytes [7] |
Aspergillus fumigatus | Lung | β-1,3-glucan, chitin, galactomannan, DHN-melanin [2] | TLR2, CLRs (dectin-1, − 2, mincle, DC-SIGN), NLRs (NOD1, NLRP3), CR3, PTX3 [3–5], MelLec [2] | Airway epithelial cells, CCR2+ monocytes [9], macrophages, dendritic cells [5], T and B cells, endothelial cells |
Cryptococcus neoformans | Lung | Mannose, capsular polysaccharide, glucuronoxylomannan | TLRs (−2,-4), CLRs (dectin-2, MR), NLRs (NLRP3) | Macrophages, endothelial cells |
CLR C-type lectin receptor, CR3 complement receptor 3, Fcγ receptor, NLR NOD-like receptor, MR mannose receptor, MDA5 Melanoma differentiation factor 5, PAMPs pathogen-associated molecular patterns, PRRs pattern recognition receptors