IFN-γ activates the fibrinolytic system.

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Fibroblast activation in WT and NFATc2-deficient mice.

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IFN-γ activates the fibrinolytic system.

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Presentation transcript:

IFN-γ activates the fibrinolytic system. IFN-γ activates the fibrinolytic system. (A) Increase of active plasmin levels in WT and NFATc2-deficient mice at the indicated time points after C. albicans infection. Each dot represents a single mouse. Means and SEM are depicted; a two-way ANOVA was used for statistics. The experiment was repeated twice with similar results. (B) Hematoxylin and eosin staining of WT mouse skin lesions 48 hours after C. albicans infections in the presence of PAI-1 (0.65 μg per mouse) and NFATc2-deficient mice skin lesions. Larger magnification of PicroSirius Red staining of selected areas is also shown to evidence collagen depositions. Representative histological sections from two independent experiments are shown; see also fig. S13. (C) Kaplan-Meier curves showing the percentage of mice undergoing ulceration after C. albicans administration. Where indicated, mice were treated with PAI-1 (0.65 μg per mouse, coadministered with C. albicans). n (WT) = 10, n (WT + PAI-1) = 24; log-rank test. (D) Representative images of α-SMA immunohistochemical staining in skin sections of NFATc2-deficient and PAI-1–treated WT animals 8 and 7 days after C. albicans infection. (E) Left: Western blot analysis of tPA and PAI-1 levels measured in WT and NFATc2-deficient animals at the indicated hours after C. albicans infection. Data are representative of three independent experiments. Middle and right: Western blot analysis of tPA and PAI-1 levels measured in WT and NFATc2-deficient animals treated with an anti–IFN-γ blocking antibody and with rIFN-γ, respectively, at the time of C. albicans infection. The analysis was performed at the indicated time points. Data are representative of two independent experiments. (F) Left: Increase of active plasmin levels in NFATc2-deficient mice at the indicated time points after C. albicans infection in the presence or not of rIFN-γ. Right: Increase of active plasmin levels in WT mice at the indicated time points after C. albicans infection in the presence or not of anti–IFN-γ blocking antibody. Each dot represents a single mouse. Means and SEM are depicted; a two-way ANOVA was used for statistics. (G) qRT-PCR analysis of IFN-γ mRNA in C. albicans–infected tissues before and 6 hours after the infection in WT animals depleted or not of NK cells. Each dot represents a single mouse. Means and SEM are depicted; a two-way ANOVA was used for statistics. (H) Kaplan-Meier curve showing the percentage of WT (n = 9), NK cell–depleted WT (n = 8), and NFATc2-deficient mice (n = 10) undergoing ulceration after C. albicans administration at the indicated time points. Log-rank test was used. (I) IFN-γ immunohistochemical staining in skin sections (brown cells) of WT mice treated or not with anti-asialo GM to eliminate NK cells (NK-depleted) and infected with C. albicans. Note that IFN-γ+ cells are strongly reduced in NK-depleted mice. (J) Kaplan-Meier curve showing the percentage of NFATc2-deficient mice (n = 10), NFATc2-deficient mice reconstituted with activated IFN-γ–sufficient NK cells (n = 10) or IFN-γ–deficient NK cells (n = 10), and WT animals (n = 8) undergoing ulceration at the indicated time points after C. albicans administration. Log-rank test was used. William Santus et al. Sci. Immunol. 2017;2:eaan2725 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works