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- Title
Candida albicans phospholipomannan is sensed through toll-like receptors.
- Authors
Jouault, Thierry; Ibata-Ombetta, Stella; Takeuchi, Osamu; Trinel, Pierre-André; Sacchetti, Paola; Lefebvre, Philippe; Akira, Shizuo; Poulain, Daniel
- Abstract
Candida albicans is a common, harmless yeast in the human digestive tract that also causes severe systemic fungal infection in hospitalized patients. Its cell-wall surface displays a unique glycolipid called phospholipomannan (PLM). The ability of PLM to stimulate tumor necrosis factor (TNF)-alpha production by J774 mouse cells correlates with the activation of nuclear factor (NF)-kappaB. We examined the involvement of Toll-like receptors (TLRs) in PLM-dependent stimulation. Compared with wild-type cells, which produced large amounts of TNF-alpha after incubation with PLM, the deletion of the TLR4 and TLR6 genes led to a limited alteration of the PLM-induced response. Deletion of the TLR2 gene completely abolished the cell response. Surface expression of PLM is a phylogenic trait of C. albicans, and the recognition of PLM by TLRs, together with the unique pathogenic potential of C. albicans, suggests that this molecule may be a member of the pathogen-associated molecular pattern family.
- Publication
The Journal of infectious diseases, 2003, Vol 188, Issue 1, p165
- ISSN
0022-1899
- Publication type
Journal Article
- DOI
10.1086/375784