Karl J. Staples, PhD, Timothy S. C. Hinks, MB BS, Jon A

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Presentation transcript:

Phenotypic characterization of lung macrophages in asthmatic patients: Overexpression of CCL17 Karl J. Staples, PhD, Timothy S.C. Hinks, MB BS, Jon A. Ward, BSc (Hons), Victoria Gunn, BM, Caroline Smith, BA (Hons), Ratko Djukanović, MD Journal of Allergy and Clinical Immunology Volume 130, Issue 6, Pages 1404-1412.e7 (December 2012) DOI: 10.1016/j.jaci.2012.07.023 Copyright © 2012 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig 1 Expression of biomarkers on MDMs stimulated with IL-4 or IL-13. A, Gene expression of CCL17 and CLEC10A is expressed as fold induction compared with NT (not treated, mean ± SE, n = 11). B, Cell-surface expression data are expressed as specific mean fluorescence intensity (SMFI; mean ± SE, n = 12). Data were analyzed by using Friedman ANOVA and the Dunn multiple comparison test compared with NT. *P < .05, **P < .01, and ***P < .001. Journal of Allergy and Clinical Immunology 2012 130, 1404-1412.e7DOI: (10.1016/j.jaci.2012.07.023) Copyright © 2012 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig 2 Analysis of lung macrophage M2 marker expression by means of flow cytometry. Expression of cell-surface CD163 on sputum and BAL macrophages of healthy control subjects (HC), patients with mild asthma (MA), and patients with moderate asthma (MO) is shown. Bars indicate median values, and numbers in parentheses indicate n. Data are expressed as percentages of Live+CD45+CD3−HLA-DR+ cells and analyzed by using Kruskal-Wallis ANOVA and the Dunn multiple comparison test. *P < .05 and ***P < .001. Journal of Allergy and Clinical Immunology 2012 130, 1404-1412.e7DOI: (10.1016/j.jaci.2012.07.023) Copyright © 2012 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig 3 Sorting of lung macrophages for RT-PCR analysis. Sputum and BAL cells were stained according to the method outlined. Live+CD45+CD3−HLA-DR+Lin 1+ events were sorted into PBS with a FACSAria and analyzed by using cytospin preparations (representative micrograph shown at ×40 original magnification). Data are expressed as a percentage of total cells, presented as means ± SEs (n = 6), and analyzed by using the 1-tailed Wilcoxon signed-rank test. *P < .05. Journal of Allergy and Clinical Immunology 2012 130, 1404-1412.e7DOI: (10.1016/j.jaci.2012.07.023) Copyright © 2012 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig 4 CCL17 mRNA levels (normalized to β2-microglobulin) and association with sputum eosinophil counts. Bars indicate median values, and numbers in parentheses indicate n. Data were analyzed by using Kruskal-Wallis ANOVA followed by the Dunn multiple comparison test. *P < .05 and **P < .01. The association between CCL17 mRNA expression and the percentage of sputum eosinophils was analyzed by using the Spearman rank correlation test. Circles, Healthy control subjects; squares, asthmatic patients. Journal of Allergy and Clinical Immunology 2012 130, 1404-1412.e7DOI: (10.1016/j.jaci.2012.07.023) Copyright © 2012 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig 5 A, Effects of fluticasone propionate and PI3K inhibitors on CCL17 release by IL-4–stimulated MDMs. Data are expressed as a percentage of maximum IL-4 stimulation (mean ± SE, n = 5). Data were analyzed by using Friedman ANOVA and the Dunn multiple comparison test. B, Effect of LY294002 on spontaneous release of CCL17 from BAL cells compared to cells not treated (NT) (n = 13). Data were analyzed by using the 1-tailed Wilcoxon signed-rank test. *P < .05 and **P < .01. Journal of Allergy and Clinical Immunology 2012 130, 1404-1412.e7DOI: (10.1016/j.jaci.2012.07.023) Copyright © 2012 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig E1 Analysis of lung macrophage M2 marker expression by means of flow cytometry. A, Cell pellets from sputum and BAL were incubated with Aqua Dead Dye (Invitrogen) and the antibodies PE-AF610–labeled anti-CD45, PE-Cy7–labeled anti-CD3, and APC-Cy7–labeled anti–HLA-DR or appropriate isotype controls. After fixation and permeabilization, cells were incubated with PE-labeled anti-CD68 or an appropriate isotype control. Backgating of CD45+CD3−CD68+ events demonstrates that all these cells express high levels of HLA-DR. Plots are representative of 10 independent sputum samples. B, Live+CD45+CD3−HLA-DR+ events were sorted into PBS by using a FACSAria, and the selected cells were loaded onto a cytospin and stained with Diff-Quick. Cells were counted, and data are expressed as a percentage of nonsquamous cells and presented as means ± SEs (sputum, n = 3; BAL, n = 5). Data were further analyzed by using the 1-tailed Mann-Whitney U test. *P < .05 compared with the presort sample. C, Representative scatter plot showing low fluorescein isothiocyanate (FITC)/PE autofluorescence of Live+ events from BAL samples. Journal of Allergy and Clinical Immunology 2012 130, 1404-1412.e7DOI: (10.1016/j.jaci.2012.07.023) Copyright © 2012 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig E2 Human monocytes respond to TH2 cytokines. A, Monocytes were stimulated with IL-4 (20 ng/mL) for 24 hours and analyzed for cell-surface expression of CD14 and CD206 by means of flow cytometry. Data are expressed as mean fluorescence intensity corrected for isotype control staining (SMFI) and presented as means ± SEs (n = 4). B, Gene expression of M1 or M2 biomarkers was analyzed by means of RT-PCR. Data were normalized to β2-microglobulin (β2M) and are expressed as means ± SEs (n = 4). NT, Not treated. Journal of Allergy and Clinical Immunology 2012 130, 1404-1412.e7DOI: (10.1016/j.jaci.2012.07.023) Copyright © 2012 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig E3 Preliminary analysis of BAL macrophage gene expression. Live+CD45+CD3−HLA-DR+Lin 1+ events from BAL of 4 healthy control subjects and 4 asthmatic patients were sorted into lysis buffer, and RNA was extracted and reverse transcribed. Steady-state levels of gene expression were measured by using real-time PCR and normalized to β2-microglobulin (β2M). Bars indicate median expression relative to β2M. Journal of Allergy and Clinical Immunology 2012 130, 1404-1412.e7DOI: (10.1016/j.jaci.2012.07.023) Copyright © 2012 American Academy of Allergy, Asthma & Immunology Terms and Conditions

Fig E4 Ex vivo release of cytokines by BAL cells from healthy control subjects (HC), patients with mild asthma (MA), or patients with moderate asthma (MO). Spontaneous release of cytokines into supernatants after 24 hours in cell culture was assessed by using the Luminex assay. Bars indicate median values, and data were analyzed with a Kruskal-Wallis ANOVA followed by the Dunn multiple comparison test. Journal of Allergy and Clinical Immunology 2012 130, 1404-1412.e7DOI: (10.1016/j.jaci.2012.07.023) Copyright © 2012 American Academy of Allergy, Asthma & Immunology Terms and Conditions