Adaptive response of microglial cells to in vitro infection by Candida albicans isolates with different genomic backgrounds.
It has been recently demonstrated that Candida albicans isolates with distinct genomic backgrounds (namely, b and c genotypes) express different susceptibility to antifungal activity by human monocytes in vitro. We show here that, although comparable in their ability to undergo dimorphic transition and in susceptibility to phagocytosis by microglial cells, the b and c isolates show striking differences in terms of intracellular survival. Only the c genotype resists indeed to intracellular killing and eventually replicates inside microglial cells, that in turn respond to fungal infection, preferentially towards the c genotype, with nuclear factor-kappaB (NF-kappaB) activation and increased Mip1alpha production. These data indicate that C. albicans-microglial cell interaction is strictly dependent upon fungal genotype, strengthening the potential significance of genotyping as prognostic parameter in clinical infections by C. albicans.
Neglia
Rachele
R
Dipartimento di Scienze di Sanità Pubblica, Università di Modena e Reggio Emilia, 41100 Modena, Italy.
Colombari
Bruna
B
Peppoloni
Samuele
S
Orsi
Carlotta
C
Tavanti
Arianna
A
Senesi
Sonia
S
Blasi
Elisabetta
E
D002176:Candida albicans / Q000235:genetics / Q000276:immunology / Q000472:pathogenicity / Q000502:physiology*; D002177:Candidiasis / Q000382:microbiology*; D002460:Cell Line; D004797:Enzyme-Linked Immunosorbent Assay; D005838:Genotype; D006801:Humans; D015850:Interleukin-6 / Q000276:immunology; D017628:Microglia / Q000382:microbiology* / Q000502:physiology; D016328:NF-kappa B / Q000276:immunology; D009569:Nitric Oxide / Q000276:immunology; D014157:Transcription Factors / Q000276:immunology; D014409:Tumor Necrosis Factor-alpha / Q000276:immunology
D015850:Interleukin-6; C114015:MNP-1 protein, human; D016328:NF-kappa B; D014157:Transcription Factors; D014409:Tumor Necrosis Factor-alpha; D009569:Nitric Oxide