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Schliefsteiner C, Ibesich S, Wadsack C. Placental Hofbauer Cell Polarization Resists Inflammatory Cues In Vitro. Int J Mol Sci 2020; 21:ijms21030736. [PMID: 31979196 PMCID: PMC7038058 DOI: 10.3390/ijms21030736] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/21/2020] [Accepted: 01/21/2020] [Indexed: 11/23/2022] Open
Abstract
Feto-placental Hofbauer cells (HBCs) are macrophages residing in placental stroma. They are generally described as anti-inflammatory M2 polarized cells, promoting tolerance and tissue remodeling. In certain pathologies, however, a possible phenotypical switch towards pro-inflammatory M1 macrophages has been proposed. The study aimed to determine if HBCs can acquire an M1 phenotype under pro-inflammatory conditions in vitro. HBCs were isolated from healthy human term placentas. Cells were cultivated upon addition of LPS and INF-γ or IL-4 and IL-13 to induce the M1 and M2 phenotype, respectively. Specific cell polarization markers and cytokines, associated with respective phenotypes, were investigated by flow cytometry and ELISA. THP-1 macrophages served as positive control. Pro-inflammatory stimuli reduced M2 markers CD163 and DC-SIGN, but did not induce M1 markers. TNF-α release was increased, but at the same time TGF-β and IL-10 release was upregulated, resembling in part the M2b sub-phenotype. Anti-inflammatory stimuli had no effect on HBC polarization. HBCs maintain their M2 phenotype in vitro despite inflammatory stimuli, which might represent a state of adaption and tolerance to avoid rejection of the semiallogeneic feto-placental unit.
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Adjustment of dendritic cells to the breast-cancer microenvironment is subset specific. Nat Immunol 2018; 19:885-897. [DOI: 10.1038/s41590-018-0145-8] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 05/11/2018] [Indexed: 12/12/2022]
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Yin C, Mohanta S, Maffia P, Habenicht AJR. Editorial: Tertiary Lymphoid Organs (TLOs): Powerhouses of Disease Immunity. Front Immunol 2017; 8:228. [PMID: 28321222 PMCID: PMC5337484 DOI: 10.3389/fimmu.2017.00228] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 02/17/2017] [Indexed: 12/14/2022] Open
Affiliation(s)
- Changjun Yin
- Institute for Cardiovascular Prevention, Ludwig Maximilians University of Munich, Munich, Germany; German Centre for Cardiovascular Research (DZHK), Munich Heart Alliance, Munich, Germany
| | - Sarajo Mohanta
- Institute for Cardiovascular Prevention, Ludwig Maximilians University of Munich , Munich , Germany
| | - Pasquale Maffia
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK; BHF Centre for Excellence in Vascular Science and Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK; Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Andreas J R Habenicht
- Institute for Cardiovascular Prevention, Ludwig Maximilians University of Munich , Munich , Germany
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Rattazzi L, Piras G, Brod S, Smith K, Ono M, D'Acquisto F. Impact of Enriched Environment on Murine T Cell Differentiation and Gene Expression Profile. Front Immunol 2016; 7:381. [PMID: 27746779 PMCID: PMC5042968 DOI: 10.3389/fimmu.2016.00381] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 09/12/2016] [Indexed: 12/11/2022] Open
Abstract
T cells are known to be plastic and to change their phenotype according to the cellular and biochemical milieu they are embedded in. In this study, we transposed this concept at a macroscopic level assessing whether changes in the environmental housing conditions of C57/BL6 mice would influence the phenotype and function of T cells. Our study shows that exposure to 2 weeks in an enriched environment (EE) does not impact the T cell repertoire in vivo and causes no changes in the early TCR-driven activation events of these cells. Surprisingly, however, T cells from enriched mice showed a unique T helper effector cell phenotype upon differentiation in vitro. This was featured by a significant reduction in their ability to produce IFN-γ and by an increased release of IL-10 and IL-17. Microarray analysis of these cells also revealed a unique gene fingerprint with key signaling pathways involved in autoimmunity being modulated. Together, our results provide first evidence for a specific effect of EE on T cell differentiation and its associated changes in gene expression profile. In addition, our study sheds new light on the possible mechanisms by which changes in environmental factors can significantly influence the immune response of the host and favor the resolution of the inflammatory response.
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Affiliation(s)
- Lorenza Rattazzi
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London , London , UK
| | - Giuseppa Piras
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London , London , UK
| | - Samuel Brod
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London , London , UK
| | - Koval Smith
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London , London , UK
| | - Masahiro Ono
- Department of Life Science, Faculty of Natural Science, Imperial College of Science, Technology and Medicine , London , UK
| | - Fulvio D'Acquisto
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London , London , UK
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Sun Y, Kaur K, Kanayama K, Morinaga K, Park S, Hokugo A, Kozlowska A, McBride WH, Li J, Jewett A, Nishimura I. Plasticity of Myeloid Cells during Oral Barrier Wound Healing and the Development of Bisphosphonate-related Osteonecrosis of the Jaw. J Biol Chem 2016; 291:20602-16. [PMID: 27514746 DOI: 10.1074/jbc.m116.735795] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Indexed: 12/14/2022] Open
Abstract
Injury to the barrier tissue initiates a rapid distribution of myeloid immune cells from bone marrow, which guide sound wound healing. Bisphosphonates, a widely used anti-bone resorptive drug with minimal systemic side effects, have been linked to an abnormal wound healing in the oral barrier tissue leading to, in some cases, osteonecrosis of the jaw (ONJ). Here we report that the development of ONJ may involve abnormal phenotypic plasticity of Ly6G+/Gr1+ myeloid cells in the oral barrier tissue undergoing tooth extraction wound healing. A bolus intravenous zoledronate (ZOL) injection to female C57Bl/6 mice followed by maxillary first molar extraction resulted in the development of ONJ-like lesion during the second week of wound healing. The multiplex assay of dissociated oral barrier cells exhibited the secretion of cytokines and chemokines, which was significantly modulated in ZOL mice. Tooth extraction-induced distribution of Ly6G+/Gr1+ cells in the oral barrier tissue increased in ZOL mice at week 2. ONJ-like lesion in ZOL mice contained Ly6G+/Gr1+ cells with abnormal size and morphology as well as different flow cytometric staining intensity. When anti-Ly6G (Gr1) antibody was intraperitoneally injected for 5 days during the second week of tooth extraction, CD11b+GR1(hi) cells in bone marrow and Ly6G+ cells in the oral barrier tissue were depleted, and the development of ONJ-like lesion was significantly attenuated. This study suggests that local modulation of myeloid cell plasticity in the oral barrier tissue may provide the basis for pathogenesis and thus therapeutic as well as preventive strategy of ONJ.
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Affiliation(s)
- Yujie Sun
- From the Department of Dental Implant Centre, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China, Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, and
| | - Kawaljit Kaur
- Weintraub Center for Reconstructive Biotechnology, Division of Oral Medicine and Biology, UCLA School of Dentistry, Los Angeles, California 90095
| | - Keiichi Kanayama
- Weintraub Center for Reconstructive Biotechnology, Department of Periodontology, Asahi University School of Dentistry, Gifu, Japan 501-0296
| | - Kenzo Morinaga
- Weintraub Center for Reconstructive Biotechnology, Department of Oral Rehabilitation, Fukuoka Dental College, Fukuoka, Japan 814-0175
| | - Sil Park
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, and Division of Oral Medicine and Biology, UCLA School of Dentistry, Los Angeles, California 90095
| | - Akishige Hokugo
- Weintraub Center for Reconstructive Biotechnology, Division of Plastic and Reconstructive Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California 90095
| | - Anna Kozlowska
- Weintraub Center for Reconstructive Biotechnology, Division of Oral Medicine and Biology, UCLA School of Dentistry, Los Angeles, California 90095, Department of Tumor Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, Poznan, Poland 61-866, and
| | - William H McBride
- Division of Molecular and Cellular Oncology, David Geffen School of Medicine at UCLA, Los Angeles, California 90095
| | - Jun Li
- From the Department of Dental Implant Centre, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China,
| | - Anahid Jewett
- Weintraub Center for Reconstructive Biotechnology, Division of Oral Medicine and Biology, UCLA School of Dentistry, Los Angeles, California 90095,
| | - Ichiro Nishimura
- Weintraub Center for Reconstructive Biotechnology, Division of Advanced Prosthodontics, and Division of Oral Medicine and Biology, UCLA School of Dentistry, Los Angeles, California 90095,
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Italiani P, Boraschi D. New Insights Into Tissue Macrophages: From Their Origin to the Development of Memory. Immune Netw 2015; 15:167-76. [PMID: 26330802 PMCID: PMC4553254 DOI: 10.4110/in.2015.15.4.167] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Revised: 07/25/2015] [Accepted: 08/04/2015] [Indexed: 02/07/2023] Open
Abstract
Macrophages are the main effector cells of innate immunity and are involved in inflammatory and anti-infective processes. They also have an essential role in maintaining tissue homeostasis, supporting tissue development, and repairing tissue damage. Until few years ago, it was believed that tissue macrophages derived from circulating blood monocytes, which terminally differentiated in the tissue and unable to proliferate. Recent evidence in the biology of tissue macrophages has uncovered a series of immune and ontogenic features that had been neglected for long, despite old observations. These include origin, heterogeneity, proliferative potential (or self-renewal), polarization, and memory. In recent years, the number of publications on tissue resident macrophages has grown rapidly, highlighting the renewed interest of the immunologists for these key players of innate immunity. This mini-review aims to summarizing the new current knowledge in macrophage immunobiology, in order to offer a clear and immediate overview of the field.
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Affiliation(s)
- Paola Italiani
- Institute of Protein Biochemistry, National Research Council, Naples 80131, Italy
| | - Diana Boraschi
- Institute of Protein Biochemistry, National Research Council, Naples 80131, Italy
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Vu Manh TP, Bertho N, Hosmalin A, Schwartz-Cornil I, Dalod M. Investigating Evolutionary Conservation of Dendritic Cell Subset Identity and Functions. Front Immunol 2015; 6:260. [PMID: 26082777 PMCID: PMC4451681 DOI: 10.3389/fimmu.2015.00260] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 05/11/2015] [Indexed: 12/14/2022] Open
Abstract
Dendritic cells (DCs) were initially defined as mononuclear phagocytes with a dendritic morphology and an exquisite efficiency for naïve T-cell activation. DC encompass several subsets initially identified by their expression of specific cell surface molecules and later shown to excel in distinct functions and to develop under the instruction of different transcription factors or cytokines. Very few cell surface molecules are expressed in a specific manner on any immune cell type. Hence, to identify cell types, the sole use of a small number of cell surface markers in classical flow cytometry can be deceiving. Moreover, the markers currently used to define mononuclear phagocyte subsets vary depending on the tissue and animal species studied and even between laboratories. This has led to confusion in the definition of DC subset identity and in their attribution of specific functions. There is a strong need to identify a rigorous and consensus way to define mononuclear phagocyte subsets, with precise guidelines potentially applicable throughout tissues and species. We will discuss the advantages, drawbacks, and complementarities of different methodologies: cell surface phenotyping, ontogeny, functional characterization, and molecular profiling. We will advocate that gene expression profiling is a very rigorous, largely unbiased and accessible method to define the identity of mononuclear phagocyte subsets, which strengthens and refines surface phenotyping. It is uniquely powerful to yield new, experimentally testable, hypotheses on the ontogeny or functions of mononuclear phagocyte subsets, their molecular regulation, and their evolutionary conservation. We propose defining cell populations based on a combination of cell surface phenotyping, expression analysis of hallmark genes, and robust functional assays, in order to reach a consensus and integrate faster the huge but scattered knowledge accumulated by different laboratories on different cell types, organs, and species.
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Affiliation(s)
- Thien-Phong Vu Manh
- UM2, Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University , Marseille , France ; U1104, Institut National de la Santé et de la Recherche Médicale (INSERM) , Marseille , France ; UMR7280, Centre National de la Recherche Scientifique (CNRS) , Marseille , France
| | - Nicolas Bertho
- Virologie et Immunologie Moléculaires UR892, Institut National de la Recherche Agronomique , Jouy-en-Josas , France
| | - Anne Hosmalin
- INSERM U1016, Institut Cochin , Paris , France ; CNRS UMR8104 , Paris , France ; Université Paris Descartes , Paris , France ; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin , Paris , France
| | - Isabelle Schwartz-Cornil
- Virologie et Immunologie Moléculaires UR892, Institut National de la Recherche Agronomique , Jouy-en-Josas , France
| | - Marc Dalod
- UM2, Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University , Marseille , France ; U1104, Institut National de la Santé et de la Recherche Médicale (INSERM) , Marseille , France ; UMR7280, Centre National de la Recherche Scientifique (CNRS) , Marseille , France
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