Mutants impaired in N-acetylglucosamine transport and catabolism display morphological and pH neutralization defects within macrophages. Mutants impaired.

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Mutants impaired in N-acetylglucosamine transport and catabolism display morphological and pH neutralization defects within macrophages. Mutants impaired in N-acetylglucosamine transport and catabolism display morphological and pH neutralization defects within macrophages. (A) GFP-tagged C. albicans strains were cocultured with RAW264.7 macrophages in RPMI medium for 2 h. Samples were counterstained with calcofluor white to identify internalized cells, and hyphal length was measured using Slidebook 6 software. (B) RAW264.7 macrophages preloaded with the acidophilic dye LysoTracker red were cocultured with SC5314, the stp2Δ mutant, the h-d mutant, or the ngt1Δ mutant expressing a C-terminal Pma1-GFP fusion. Phagosomal pH was measured by quantifying LysoTracker red fluorescent intensity using Slidebook 6 software. **, P < 0.01; ***, P < 0.001; ****, P < 0.0001; ns, not significant. The boxes represent cells with fluorescence intensities from 25% to 75% and the whiskers are 5% to 95%. At least 50 cells were counted per strain. (C) Representative images of each strain. C. albicans fluorescence results with GFP, Lysotracker red, and mCherry are shown. Elisa M. Vesely et al. mSphere 2017; doi:10.1128/mSphere.00357-17