Μ-Opioid Receptor Is Induced by IL-13 within Lymph Nodes from Patients with Sézary Syndrome Alan Bénard, Pierre Cavaillès, Jérôme Boué, Emmanuelle Chapey,

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μ-Opioid Receptor Is Induced by IL-13 within Lymph Nodes from Patients with Sézary Syndrome Alan Bénard, Pierre Cavaillès, Jérôme Boué, Emmanuelle Chapey, Jagadeesh Bayry, Catherine Blanpied, Nicolas Meyer, Laurence Lamant, Srini V. Kaveri, Pierre Brousset, Gilles Dietrich Journal of Investigative Dermatology Volume 130, Issue 5, Pages 1337-1344 (May 2010) DOI: 10.1038/jid.2009.433 Copyright © 2010 The Society for Investigative Dermatology, Inc Terms and Conditions

Figure 1 Opioid receptor expression in lymph node biopsies from patients with non-Hodgkin's B- and T-cell lymphomas. Expression of mRNA encoding for all three opioid receptor classes, MOR, DOR, and KOR, was examined by RT–PCR using the human neuroblastoma cell lines SH-SY5Y and SK-N-MC as controls. cDNA was synthesized from total RNA extracted from tumor-free RLN samples (hatched bars, n=9) and lymph node biopsy samples originating from patients with either non-Hodgkin's B-cell lymphomas (open bars), including DLCL (n=11) and FL (n=8), or non-Hodgkin's T-cell lymphomas (closed bars), including PTCL (n=8), SS (n=5), and ALCL (n=7). RT–PCR experiments were performed twice from total RNA extracted from two independent sets of 20 × 50-μm-thick frozen sections. Results are expressed as percentage of opioid receptor-expressing biopsies. ALCL, anaplastic large cell lymphoma; cDNA, complementary DNA; DLCL, diffuse large cell lymphoma; DOR, δ-opioid receptor; FL, follicular lymphoma; KOR; κ-opioid receptor; MOR, μ-opioid receptor; PTCL, peripheral T-cell lymphoma; RLN, reactive lymph node; SS, Sézary syndrome. Journal of Investigative Dermatology 2010 130, 1337-1344DOI: (10.1038/jid.2009.433) Copyright © 2010 The Society for Investigative Dermatology, Inc Terms and Conditions

Figure 2 mRNA expression of the Th2-related cytokines in lymph node biopsies from patients with non-Hodgkin's lymphomas. mRNA encoding for IL-4, IL-5, IL-10, and IL-13 were quantified by real-time PCR in tumor-free RLN (□) and lymph nodes from patients with either non-Hodgkin's B-cell lymphomas, including DLCL (▵) and FL (○), or non-Hodgkin's T-cell lymphomas, including PTCL (•), SS (▴), and ALCL (▪). mRNA content was normalized to the metastatic lymph node protein 51 (MLN51) mRNA and quantified relative to standard cDNA prepared from the Jurkat leukemia T cell line (calibrator sample). For each sample, mRNA level was expressed relative to the average of mRNA levels in normal reactive lymph nodes. Gene expression in each sample was assessed in at least two independent experiments run in duplicate. Data were analyzed by using a one-way ANOVA followed by Bonferroni's multiple comparison test. ALCL, anaplastic large cell lymphoma; ANOVA, analysis of variance; cDNA, complementary DNA; DLCL, diffuse large cell lymphoma; DOR, δ-opioid receptor; FL, follicular lymphoma; IL, interleukin; KOR; κ-opioid receptor; MOR, μ-opioid receptor; PTCL, peripheral T-cell lymphoma; RLN, reactive lymph node; SS, Sézary syndrome. Journal of Investigative Dermatology 2010 130, 1337-1344DOI: (10.1038/jid.2009.433) Copyright © 2010 The Society for Investigative Dermatology, Inc Terms and Conditions

Figure 3 Correlation between MOR and IL-13 mRNA expression in lymph node biopsies. (a) Relative IL-13 mRNA expression in lymph nodes expressing (+) or not expressing (-) MOR. Lymph node specimens with detectable MOR mRNA included five patients with Sézary syndrome (•) and three patients with follicular B-cell lymphoma (▪). Data were analyzed by using unpaired t-test. (b) Correlation between MOR and IL-13 mRNA expression was calculated using a non-parametric Spearman correlation test (r=0.94); P<0.01. IL, interleukin; MOR, μ-opioid receptor. Journal of Investigative Dermatology 2010 130, 1337-1344DOI: (10.1038/jid.2009.433) Copyright © 2010 The Society for Investigative Dermatology, Inc Terms and Conditions

Figure 4 Cytofluorometric analysis of IL-13Rα1 expression on peripheral monocytes and lymphocytes from healthy donors and patients with Sézary syndrome. Peripheral blood mononuclear cells, including CD14+CD3− monocytes (a and c) and CD3+CD4+ T lymphocytes (b and d) from healthy donors (upper panels) and patients with Sézary syndrome (lower panels) were examined for cell surface expression of IL-13Rα1. The figure depicts one representative experiment for one healthy blood donor out of seven tested and for one patient with Sézary syndrome out of four. CD, cluster of differentiation. Journal of Investigative Dermatology 2010 130, 1337-1344DOI: (10.1038/jid.2009.433) Copyright © 2010 The Society for Investigative Dermatology, Inc Terms and Conditions

Figure 5 Cytofluorometric analysis of IL-13Rα1 expression on CD4+ and CD8+ T lymphocytes, conventional DCs, LCs, and monocytes from healthy donors. IL-13Rα1 expression was investigated on naive and activated peripheral CD4+ (a) and CD8+ (b) T lymphocytes, on unstimulated and stimulated CD14+CD3− monocytes (c) and on immature and mature monocyte-derived CD14−CD1a+ conventional DCs (d) or LCs (e). In (a and b), PBMCs isolated from healthy blood donors were activated (right panels) or not (left panels) by PHA for 24hours. Cell surface expression of IL-13Rα1 was examined by cytofluorometry in the gated CD4+ (a) or CD8+ (b) T lymphocytes. Cell activation was checked by the expression of the inducible cell surface molecule CD69. In (c), monocytes purified from healthy blood donors by anti-CD14 immuno-magnetic cell sorting were activated (right panels) or not (left panels) by incubating the cells with LPS together with Poly(IC) for 48hours. Monocyte activation was testified by the increase in IL-6 mRNA as assessed by real-time quantitative PCR. Conventional (d) and Langerhans (e) DCs were derived from monocytes in the presence of GM-CSF and IL-4 without (d) or with TGF-β (e), respectively. Cell activation (left panels) induced by LPS plus Poly(IC) was assessed by the upregulation of CD86 cell surface expression. Results shown in the figure are representative of at least three independent experiments. CD, cluster of differentiation; DC, dendritic cell; IL, interleukin; LC, Langerhans cell; LPS, lipopolysaccharide; PBMC, peripheral blood mononuclear cell; PHA, phytohemagglutinin; Poly(IC), polyinosinic-polycytidylic acid; TGF-β, transforming growth factor-β. Journal of Investigative Dermatology 2010 130, 1337-1344DOI: (10.1038/jid.2009.433) Copyright © 2010 The Society for Investigative Dermatology, Inc Terms and Conditions

Figure 6 IL-13-induced MOR expression in IL-13Rα1-expressing immune cells. Freshly purified monocytes and monocyte-derived LCs stimulated with LPS plus Poly(IC) were cultured in RPMI 1% FCS with (+) or without (-) 100ng human rIL-13 for 24hours. MOR mRNA expression was then examined by RT–PCR as described in Figure 1. Results are representative of three independent experiments. IL-13Rα1 activation by IL-13 in monocytes was evidenced by the increase in MRC1 mRNA as assessed by real-time quantitative PCR (right panels). Results are expressed as mean±SD of three independent experiments performed in duplicates. CD, cluster of differentiation; FCS, fetal calf serum; IL, interleukin; LC, Langerhans cell; LPS, lipopolysaccharide; PBMC, peripheral blood mononuclear cell; PHA, phytohemagglutinin; Poly(IC), polyinosinic-polycytidylic acid; MOR, μ-opioid receptor; MRC1, mannose receptor C type 1. Journal of Investigative Dermatology 2010 130, 1337-1344DOI: (10.1038/jid.2009.433) Copyright © 2010 The Society for Investigative Dermatology, Inc Terms and Conditions