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Heine A, Held SAE, Schulte-Schrepping J, Wolff JFA, Klee K, Ulas T, Schmacke NA, Daecke SN, Riethausen K, Schultze JL, Brossart P. Generation and functional characterization of MDSC-like cells. Oncoimmunology 2017; 6:e1295203. [PMID: 28507805 DOI: 10.1080/2162402x.2017.1295203] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/04/2017] [Accepted: 02/08/2017] [Indexed: 01/10/2023] Open
Abstract
Myeloid-derived suppressor cells (MDSC) are critical in regulating immune responses by suppressing antigen presenting cells (APC) and T cells. We previously observed that incubation of peripheral blood monocytes with interleukin (IL)-10 during their differentiation to monocyte-derived dendritic cells (moDCs) results in the generation of an APC population with a CD14+HLA-DRlowphenotype (IL-10-APC) with reduced stimulatory capacity similar to human MDSC. Co-incubation experiments now revealed that the addition of IL-10-APC to moDC caused a reduction of DC-induced T-cell proliferation, of the expression of maturation markers, and of secreted cytokines and chemokines such as TNF-α, IL-6, MIP-1α and Rantes. Addition of IL-10-APC increased the immunosuppressive molecule osteoactivin and its corresponding receptor syndecan-4 on moDC. Moreover, CD14+HLA-DRlow MDSC isolated from healthy donors expressed high levels of osteoactivin, which was even further upregulated by the auxiliary addition of IL-10. Using transcriptome analysis, we identified a set of molecules and pathways mediating these effects. In addition, we found that IL-10-APC as well as human isolated MDSC expressed higher levels of programmed death (PD)-1, PD-ligand-1 (PD-L1), glucocorticoid-induced-tumor-necrosis-factor-receptor-related-protein (GITR) and GITR-ligand. Inhibition of osteoactivin, syndecan-4, PD-1 or PD-L1 on MDSC by using blocking antibodies restored the stimulatory capacity of DC in co-incubation experiments. Activation of MDSC with Dectin-1 ligand curdlan reduced the expression of osteoactivin and PD-L1. Our results demonstrate that osteoactivin/syndecan-4 and PD-/PD-L1 are key molecules that are profoundly involved in the inhibitory effects of MDSC on DC function and might be promising tools for clinical application.
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Affiliation(s)
- Annkristin Heine
- Medical Clinic III for Oncology, Hematology and Rheumatology, University Hospital Bonn, Bonn, Germany
| | | | | | | | - Kathrin Klee
- Genomics and Immunoregulation, LIMES-Institute, University of Bonn, Bonn, Germany
| | - Thomas Ulas
- Genomics and Immunoregulation, LIMES-Institute, University of Bonn, Bonn, Germany
| | | | - Solveig Nora Daecke
- Medical Clinic III for Oncology, Hematology and Rheumatology, University Hospital Bonn, Bonn, Germany
| | - Kati Riethausen
- Medical Clinic III for Oncology, Hematology and Rheumatology, University Hospital Bonn, Bonn, Germany
| | - Joachim L Schultze
- Genomics and Immunoregulation, LIMES-Institute, University of Bonn, Bonn, Germany.,Platform for Single Cell Genomics and Epigenomics (PRECISE) at the German Center for Neurodegenerative Diseases (DZNE) and the University of Bonn, Bonn, Germany
| | - Peter Brossart
- Medical Clinic III for Oncology, Hematology and Rheumatology, University Hospital Bonn, Bonn, Germany
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Heine A, Held SAE, Daecke SN, Riethausen K, Kotthoff P, Flores C, Kurts C, Brossart P. The VEGF-Receptor Inhibitor Axitinib Impairs Dendritic Cell Phenotype and Function. PLoS One 2015; 10:e0128897. [PMID: 26042424 PMCID: PMC4456373 DOI: 10.1371/journal.pone.0128897] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 05/02/2015] [Indexed: 12/17/2022] Open
Abstract
Inhibitors of VEGF receptor (VEGFR) signaling such as sorafenib and sunitinib that are currently used in the treatment of malignant diseases have been shown to affect immunological responses by inhibition of the function of antigen presenting cells and T lymphocytes. The VEGFR-inhibitor axitinib has recently been approved for second line therapy of metastatic renal cell carcinoma. While there is some evidence that axitinib might interfere with the activation of T cells, not much is known about the effects of axitinib on dendritic cell (DC) phenotype and function. We here show that the addition of axitinib during the final Toll-like receptor-4-induced maturation step of monocyte-derived human DCs results in a reduced DC activation characterized by impaired expression of activation markers and co-stimulatory molecules such as CD80, CD83 and CD86. We further found a decreased secretion of interleukin-12 which was accompanied by reduced nuclear expression of the transcription factor cRel. In addition, we found a dose-dependent reduced activation of p38 and STAT3 in axitinib-exposed DCs, whereas the expression was not affected. The dysfunction of axitinib-exposed DCs was further underlined by their impaired induction of allogeneic T cell proliferation in a mixed lymphocyte reaction assay and inhibition of DC migration. Our results demonstrate that axitinib significantly affects DC differentiation and function primarily via the inhibition of the nuclear factor kappa B signaling pathway leading to impaired T cell activation. This will be of importance for the design of future vaccination protocols and therapeutic approaches aiming at combining different treatment strategies, eg such as programmed death-1 inhibitors with axitinib.
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Affiliation(s)
- Annkristin Heine
- Department of Oncology, Hematology and Rheumatology, University Hospital Bonn, Bonn, Germany
- * E-mail:
| | | | - Solveig Nora Daecke
- Department of Oncology, Hematology and Rheumatology, University Hospital Bonn, Bonn, Germany
| | - Kati Riethausen
- Department of Oncology, Hematology and Rheumatology, University Hospital Bonn, Bonn, Germany
| | - Philipp Kotthoff
- Department of Oncology, Hematology and Rheumatology, University Hospital Bonn, Bonn, Germany
| | - Chrystel Flores
- Institute of Experimental Immunology (IEI), University Bonn, Bonn, Germany
| | - Christian Kurts
- Institute of Experimental Immunology (IEI), University Bonn, Bonn, Germany
| | - Peter Brossart
- Department of Oncology, Hematology and Rheumatology, University Hospital Bonn, Bonn, Germany
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Abdullah Z, Geiger S, Nino-Castro A, Böttcher JP, Muraliv E, Gaidt M, Schildberg FA, Riethausen K, Flossdorf J, Krebs W, Chakraborty T, Kurts C, Schultze JL, Knolle PA, Klotz L. Lack of PPARγ in myeloid cells confers resistance to Listeria monocytogenes infection. PLoS One 2012; 7:e37349. [PMID: 22629382 PMCID: PMC3357414 DOI: 10.1371/journal.pone.0037349] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Accepted: 04/18/2012] [Indexed: 12/24/2022] Open
Abstract
The peroxisomal proliferator-activated receptor γ (PPARγ) is a nuclear receptor that controls inflammation and immunity. Innate immune defense against bacterial infection appears to be compromised by PPARγ. The relevance of PPARγ in myeloid cells, that organize anti-bacterial immunity, for the outcome of immune responses against intracellular bacteria such as Listeria monocytogenes in vivo is unknown. We found that Listeria monocytogenes infection of macrophages rapidly led to increased expression of PPARγ. This prompted us to investigate whether PPARγ in myeloid cells influences innate immunity against Listeria monocytogenes infection by using transgenic mice with myeloid-cell specific ablation of PPARγ (LysMCre×PPARγ(flox/flox)). Loss of PPARγ in myeloid cells results in enhanced innate immune defense against Listeria monocytogenes infection both, in vitro and in vivo. This increased resistance against infection was characterized by augmented levels of bactericidal factors and inflammatory cytokines: ROS, NO, IFNγ TNF IL-6 and IL-12. Moreover, myeloid cell-specific loss of PPARγ enhanced chemokine and adhesion molecule expression leading to improved recruitment of inflammatory Ly6C(hi) monocytes to sites of infection. Importantly, increased resistance against Listeria infection in the absence of PPARγ was not accompanied by enhanced immunopathology. Our results elucidate a yet unknown regulatory network in myeloid cells that is governed by PPARγ and restrains both listeriocidal activity and recruitment of inflammatory monocytes during Listeria infection, which may contribute to bacterial immune escape. Pharmacological interference with PPARγ activity in myeloid cells might represent a novel strategy to overcome intracellular bacterial infection.
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Affiliation(s)
- Zeinab Abdullah
- Institutes of Molecular Medicine and Experimental Immunology, Universität Bonn, Bonn, Germany
| | - Sergej Geiger
- Institutes of Molecular Medicine and Experimental Immunology, Universität Bonn, Bonn, Germany
| | - Andrea Nino-Castro
- Genomics & Immunoregulation, LIMES Institute, Universität Bonn, Bonn, Germany
| | - Jan P. Böttcher
- Institutes of Molecular Medicine and Experimental Immunology, Universität Bonn, Bonn, Germany
| | - Eugenia Muraliv
- Institutes of Molecular Medicine and Experimental Immunology, Universität Bonn, Bonn, Germany
| | - Moritz Gaidt
- Institutes of Molecular Medicine and Experimental Immunology, Universität Bonn, Bonn, Germany
| | - Frank A. Schildberg
- Institutes of Molecular Medicine and Experimental Immunology, Universität Bonn, Bonn, Germany
| | - Kati Riethausen
- Institutes of Molecular Medicine and Experimental Immunology, Universität Bonn, Bonn, Germany
| | - Juliane Flossdorf
- Institutes of Molecular Medicine and Experimental Immunology, Universität Bonn, Bonn, Germany
| | - Wolfgang Krebs
- Genomics & Immunoregulation, LIMES Institute, Universität Bonn, Bonn, Germany
| | - Trinad Chakraborty
- Institute for Medical Microbiology, Justus-Liebig-Universität Giessen, Giessen, Germany
| | - Christian Kurts
- Institutes of Molecular Medicine and Experimental Immunology, Universität Bonn, Bonn, Germany
| | - Joachim L. Schultze
- Genomics & Immunoregulation, LIMES Institute, Universität Bonn, Bonn, Germany
| | - Percy A. Knolle
- Institutes of Molecular Medicine and Experimental Immunology, Universität Bonn, Bonn, Germany
| | - Luisa Klotz
- Institutes of Molecular Medicine and Experimental Immunology, Universität Bonn, Bonn, Germany
- Clinic for Neurology – Inflammatory Disorders of the Nervous System and Neuro-oncology, Universität Münster, Münster, Germany
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