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Kazuta T, Murakami A, Noda S, Hirano S, Kito H, Tsujikawa K, Nakanishi H, Kimura S, Sahashi K, Koike H, Katsuno M. Clinicopathological features of graft versus host disease-associated myositis. Ann Clin Transl Neurol 2024; 11:508-519. [PMID: 38152056 PMCID: PMC10863911 DOI: 10.1002/acn3.51973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 12/02/2023] [Accepted: 12/05/2023] [Indexed: 12/29/2023] Open
Abstract
BACKGROUND AND OBJECTIVE Chronic graft versus host disease (GVHD)-associated myositis targeting skeletal muscle is a relatively rare but potentially debilitating complication following allogeneic hematopoietic stem cell transplantation (HSCT). We reviewed the clinicopathological features of GVHD-associated myositis among patients receiving allogeneic HSCT to elucidate the cellular pathogenesis. METHODS We retrospectively reviewed clinical data and muscle biopsy results from 17 consecutive patients diagnosed with GVHD-associated myositis at our institution between 1995 and 2019. Immunostaining findings of GVHD-associated myositis were compared to those of patients with anti-tRNA-synthetase antibody-associated myopathy (ASM) (n = 13) and dermatomyositis (DM) (n = 12). RESULTS The majority of patients with GVHD-associated myositis showed subacute or chronic progression of mild to moderate limb weakness together with elevated serum creatine kinase. These patients also exhibited mild C-reactive protein elevation but were negative for myositis-related autoantibodies. Programmed death-1 (PD-1)-positive cells were observed in muscle interstitium adjacent to myofibers expressing human leukocyte antigen (HLA)-DR. The interstitium was also HLA-DR-positive, similar to biopsy samples from ASM patients but not DM patients. The proportions of HLA-DR-positive muscle fibers and PD-1-positive interstitial cells were significantly higher in GVHD and ASM samples than DM samples. The PD-1-positive cells were mostly CD-8-positive lymphocytes. DISCUSSION GVHD-associated myositis is characterized by HLA-DR-positive myofibers and infiltration of PD-1-positive lymphocytes. These features distinguish GVHD-associated myositis from DM but not from ASM.
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Affiliation(s)
- Tomoyuki Kazuta
- Department of NeurologyNagoya University Graduate School of MedicineNagoyaJapan
- Department of NeurologyChutoen General Medical CenterKakegawaJapan
| | - Ayuka Murakami
- Department of NeurologyNagoya University Graduate School of MedicineNagoyaJapan
- National Hospital Organization Suzuka National HospitalSuzukaJapan
| | - Seiya Noda
- Department of NeurologyNagoya University Graduate School of MedicineNagoyaJapan
- National Hospital Organization Suzuka National HospitalSuzukaJapan
| | - Satoko Hirano
- Department of NeurologyNagoya University Graduate School of MedicineNagoyaJapan
- National Hospital Organization Suzuka National HospitalSuzukaJapan
| | - Hiroshi Kito
- Department of NeurologyNagoya University Graduate School of MedicineNagoyaJapan
- National Hospital Organization Suzuka National HospitalSuzukaJapan
| | - Koyo Tsujikawa
- Department of NeurologyNagoya University Graduate School of MedicineNagoyaJapan
| | | | - Seigo Kimura
- National Hospital Organization Suzuka National HospitalSuzukaJapan
| | - Kentaro Sahashi
- Department of NeurologyNagoya University Graduate School of MedicineNagoyaJapan
| | - Haruki Koike
- Department of NeurologyNagoya University Graduate School of MedicineNagoyaJapan
- Division of Neurology, Department of Internal MedicineSaga University Faculty of MedicineSagaJapan
| | - Masahisa Katsuno
- Department of NeurologyNagoya University Graduate School of MedicineNagoyaJapan
- Department of Clinical Research EducationNagoya University Graduate School of MedicineNagoyaJapan
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Transferring Plasmon Effect on a Biological System: Expression of Biological Polymers in Chronic Rejection and Inflammatory Rat Model. Polymers (Basel) 2021; 13:polym13111827. [PMID: 34072966 PMCID: PMC8199201 DOI: 10.3390/polym13111827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 05/27/2021] [Accepted: 05/27/2021] [Indexed: 01/08/2023] Open
Abstract
The plasmon-activated water (PAW) that reduces hydrogen bonds is made of deionized reverse osmosis water (ROW). However, compared with ROW, PAW has a significantly higher diffusion coefficient and electron transfer rate constant in electrochemical reactions. PAW has a boiling point of 97 °C and specific heat of0.94; the energy of PAW is also 1121 J/mol higher than ordinary water. The greater the force of hydrogen bonds between H2O, the larger the volume of the H2O cluster, and the easier it is to lose the original characteristics. The hydrogen bonding force of PAW is weak, so the volume of its cluster is small, and it exists in a state very close to a single H2O. PAW has a high permeability and diffusion rate, which can improve the needs of biological applications and meet the dependence of biological organisms on H2O when performing physiological functions. PAW can successfully remove free radicals, and efficiently reduce lipopolysaccharide (LPS)-induced monocytes to release nitric oxide. PAW can induce expression of the antioxidant gene Nrf2 in human gingival fibroblasts, lower amyloid burden in mice with Alzheimer’s disease, and decrease metastasis in mice grafted with Lewis lung carcinoma cells. Because the transferring plasmon effect may improve the abnormality of physiological activity in a biological system, we aimed to evaluate the influence of PAW on orthotopic allograft transplantation (OAT)-induced vasculopathy in this study. Here, we demonstrated that daily intake of PAW lowered the progression of vasculopathy in OAT-recipient ACI/NKyo rats by inhibiting collagen accumulation, proliferation of smooth muscle cells and fibroblasts, and T lymphocyte infiltration in the vessel wall. The results showed reduced T and B lymphocytes, plasma cells, and macrophage activation in the spleen of the OAT-recipient ACI/NKyo rats that were administered PAW. In contrast to the control group, the OAT-recipient ACI/NKyo rats that were administered PAW exhibited higher mobilization and levels of circulating endothelial progenitor cells associated with vessel repair. We use the transferring plasmon effect to adjust and maintain the biochemical properties of water, and to meet the biochemical demand of organisms. Therefore, this study highlights the therapeutic roles of PAW and provides more biomedical applicability for the transferring plasmon effect.
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Patten DA, Wilson GK, Bailey D, Shaw RK, Jalkanen S, Salmi M, Rot A, Weston CJ, Adams DH, Shetty S. Human liver sinusoidal endothelial cells promote intracellular crawling of lymphocytes during recruitment: A new step in migration. Hepatology 2017; 65:294-309. [PMID: 27770554 PMCID: PMC5321563 DOI: 10.1002/hep.28879] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 09/12/2016] [Indexed: 12/25/2022]
Abstract
The recruitment of lymphocytes via the hepatic sinusoidal channels and positioning within liver tissue is a critical event in the development and persistence of chronic inflammatory liver diseases. The hepatic sinusoid is a unique vascular bed lined by hepatic sinusoidal endothelial cells (HSECs), a functionally and phenotypically distinct subpopulation of endothelial cells. Using flow-based adhesion assays to study the migration of lymphocytes across primary human HSECs, we found that lymphocytes enter into HSECs, confirmed by electron microscopy demonstrating clear intracellular localization of lymphocytes in vitro and by studies in human liver tissues. Stimulation by interferon-γ increased intracellular localization of lymphocytes within HSECs. Furthermore, using confocal imaging and time-lapse recordings, we demonstrated "intracellular crawling" of lymphocytes entering into one endothelial cell from another. This required the expression of intracellular adhesion molecule-1 and stabilin-1 and was facilitated by the junctional complexes between HSECs. CONCLUSION Lymphocyte migration is facilitated by the unique structure of HSECs. Intracellular crawling may contribute to optimal lymphocyte positioning in liver tissue during chronic hepatitis. (Hepatology 2017;65:294-309).
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Affiliation(s)
- Daniel A. Patten
- National Institute for Health Research Birmingham Liver Biomedical Research Unit and Centre for Liver Research, Medical SchoolUniversity of BirminghamBirminghamUnited Kingdom
| | - Garrick K. Wilson
- National Heart and Lung Institute, Imperial Centre for Translational and Experimental MedicineImperial College LondonLondonUnited Kingdom
| | - Dalan Bailey
- Institute of Immunology and Immunotherapy, Institute of Biomedical ResearchUniversity of BirminghamBirminghamUnited Kingdom
| | - Robert K. Shaw
- Technology Hub Imaging Facility, Infrastructure and Facilities, College of Medical and Dental SciencesUniversity of BirminghamBirminghamUnited Kingdom
| | - Sirpa Jalkanen
- MediCity Research Laboratory, and Department of Medical Microbiology and ImmunologyUniversity of TurkuTurkuFinland
| | - Marko Salmi
- MediCity Research Laboratory, and Department of Medical Microbiology and ImmunologyUniversity of TurkuTurkuFinland
| | - Antal Rot
- Centre for Immunology and Infection, Department of BiologyUniversity of YorkYorkUnited Kingdom
| | - Chris J. Weston
- National Institute for Health Research Birmingham Liver Biomedical Research Unit and Centre for Liver Research, Medical SchoolUniversity of BirminghamBirminghamUnited Kingdom
| | - David H. Adams
- National Institute for Health Research Birmingham Liver Biomedical Research Unit and Centre for Liver Research, Medical SchoolUniversity of BirminghamBirminghamUnited Kingdom
| | - Shishir Shetty
- National Institute for Health Research Birmingham Liver Biomedical Research Unit and Centre for Liver Research, Medical SchoolUniversity of BirminghamBirminghamUnited Kingdom
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4
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Zheng X, Halle S, Yu K, Mishra P, Scherr M, Pietzsch S, Willenzon S, Janssen A, Boelter J, Hilfiker-Kleiner D, Eder M, Förster R. Cardiomyocytes display low mitochondrial priming and are highly resistant toward cytotoxic T-cell killing. Eur J Immunol 2016; 46:1415-26. [PMID: 26970349 PMCID: PMC5071700 DOI: 10.1002/eji.201546080] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 01/12/2016] [Accepted: 03/07/2016] [Indexed: 12/20/2022]
Abstract
Following heart transplantation, alloimmune responses can cause graft rejection by damaging donor vascular and parenchymal cells. However, it remains unclear whether cardiomyocytes are also directly killed by immune cells. Here, we used two‐photon microscopy to investigate how graft‐specific effector CD8+ T cells interact with cardiomyocytes in a mouse heart transplantation model. Surprisingly, we observed that CD8+ T cells are completely impaired in killing cardiomyocytes. Even after virus‐mediated preactivation, antigen‐specific CD8+ T cells largely fail to lyse these cells although both cell types engage in dynamic interactions. Furthermore, we established a two‐photon microscopy‐based assay using intact myocardium to determine the susceptibility of cardiomyocytes to undergo apoptosis. This feature, also known as mitochondrial priming reveals an unexpected weak predisposition of cardiomyocytes to undergo apoptosis in situ. These observations together with the early exhaustion phenotype of graft‐infiltrating specific T cells provide an explanation why cardiomyocytes are largely protected from direct CD8+ T‐cell‐mediated killing.
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Affiliation(s)
- Xiang Zheng
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Stephan Halle
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Kai Yu
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Pooja Mishra
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Michaela Scherr
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Stefan Pietzsch
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | | | - Anika Janssen
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Jasmin Boelter
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | | | - Matthias Eder
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Reinhold Förster
- Institute of Immunology, Hannover Medical School, Hannover, Germany
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Wang H, Yang YG. The complex and central role of interferon-γ in graft-versus-host disease and graft-versus-tumor activity. Immunol Rev 2015; 258:30-44. [PMID: 24517424 DOI: 10.1111/imr.12151] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 11/01/2013] [Accepted: 11/11/2013] [Indexed: 12/22/2022]
Abstract
Allogeneic hematopoietic cell transplantation (allo-HCT) is increasingly being performed to treat patients with hematologic malignancies. However, separating the beneficial graft-versus-tumor (GVT) or graft-versus-leukemia effects from graft-versus-host disease (GVHD) has been difficult and remains a significant challenge toward improving therapeutic efficacy and reducing toxicity of allo-HCT. GVHD is induced by donor T cells that also mediate potent anti-tumor responses. However, despite the largely shared effector mechanisms, extensive animal studies have demonstrated the potential of dissociating the GVT effect from GVHD. Also in many clinical cases, long-term remission was achieved following allo-HCT, without significant GVHD. A better mechanistic understanding of the immunopathophysiology of GVHD and GVT effects may potentially help to improve allo-HCT as well as maximize the benefit of GVT effects while minimizing GVHD. In this article, we review the role of IFN-γ in regulation of alloresponses following allo-HCT, with a focus on the mechanisms of how this cytokine may separate GVHD from GVT effects.
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Affiliation(s)
- Hui Wang
- Columbia Center for Translational Immunology, Columbia University College of Physicians and Surgeons, New York, NY, USA
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von Rossum A, Laher I, Choy JC. Immune-mediated vascular injury and dysfunction in transplant arteriosclerosis. Front Immunol 2015; 5:684. [PMID: 25628623 PMCID: PMC4290675 DOI: 10.3389/fimmu.2014.00684] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 12/18/2014] [Indexed: 12/16/2022] Open
Abstract
Solid organ transplantation is the only treatment for end-stage organ failure but this life-saving procedure is limited by immune-mediated rejection of most grafts. Blood vessels within transplanted organs are targeted by the immune system and the resultant vascular damage is a main contributor to acute and chronic graft failure. The vasculature is a unique tissue with specific immunological properties. This review discusses the interactions of the immune system with blood vessels in transplanted organs and how these interactions lead to the development of transplant arteriosclerosis, a leading cause of heart transplant failure.
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Affiliation(s)
- Anna von Rossum
- Department of Molecular Biology and Biochemistry, Simon Fraser University , Burnaby, BC , Canada
| | - Ismail Laher
- Department of Anaesthesiology, Pharmacology and Therapeutics, University of British Columbia , Vancouver, BC , Canada
| | - Jonathan C Choy
- Department of Molecular Biology and Biochemistry, Simon Fraser University , Burnaby, BC , Canada
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Caviezel-Firner S, Engeler D, Bolinger B, Onder L, Scandella E, Yu M, Kroczek RA, Ludewig B. Systemic minor histocompatibility antigen expression in blood endothelial cells prevents T cell-mediated vascular immunopathology. Eur J Immunol 2013; 43:3233-43. [PMID: 23963995 DOI: 10.1002/eji.201343545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 07/17/2013] [Accepted: 08/15/2013] [Indexed: 11/09/2022]
Abstract
Attenuation of T cell-mediated damage of blood endothelial cells (BECs) in transplanted organs is important to prevent transplant vasculopathy (TV) and chronic rejection. Here, we assessed the importance of minor histocompatibility antigen (mHA) distribution and different coinhibitory molecules for T cell-BEC interaction. A transgenic mHA was directed specifically to BECs using the Tie2 promoter and cellular interactions were assessed in graft-versus-host disease-like and heterotopic heart transplantation settings. We found that cognate CD4(+) T-cell help was critical for the activation of BEC-specific CD8(+) T cells. However, systemic mHA expression on BECs efficiently attenuated adoptively transferred, BEC-specific CD4(+) and CD8(+) T cells and hence prevented tissue damage, whereas restriction of mHA expression to heart BECs precipitated the development of TV. Importantly, the lack of the coinhibitory molecules programmed death-1 (PD-1) and B and T lymphocyte attenuator fostered the initial activation of BEC-specific CD4(+) T cells, but did not affect development of TV. In contrast, TV was significantly augmented in the absence of PD-1 on BEC-specific CD8(+) T cells. Taken together, these results indicate that antigen distribution in the vascular bed determines the impact of coinhibition and, as a consequence, critically impinges on T cell-mediated vascular immunopathology.
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8
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Frebel H, Oxenius A. The risks of targeting co-inhibitory pathways to modulate pathogen-directed T cell responses. Trends Immunol 2013; 34:193-9. [PMID: 23333205 PMCID: PMC7106470 DOI: 10.1016/j.it.2012.12.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 12/18/2012] [Accepted: 12/21/2012] [Indexed: 12/22/2022]
Abstract
The identification of T cell co-inhibition as a central mechanism in the regulation of adaptive immunity during infectious diseases provides new opportunities for immunotherapeutic interventions. However, the fact that T cell activity is frequently downregulated during pathogen-directed responses suggests a pivotal physiological role of co-inhibitory pathways during infectious disease. Reports of exacerbated immunopathology in conditions of impaired co-inhibition foster the view that downregulation of T cell activity is an essential negative feedback mechanism that protects from excessive pathogen-directed immunity. Thus, targeting co-inhibitory pathways can bear detrimental potential through the deregulation of physiological processes. Here, we summarize recent preclinical and clinical interventions that report immune-related adverse events after targeting co-inhibitory pathways.
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Affiliation(s)
- Helge Frebel
- Institute of Microbiology, ETH Zurich, Wolfgang-Pauli-Str. 10, 8093 Zurich, Switzerland
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Frebel H, Nindl V, Schuepbach RA, Braunschweiler T, Richter K, Vogel J, Wagner CA, Loffing-Cueni D, Kurrer M, Ludewig B, Oxenius A. Programmed death 1 protects from fatal circulatory failure during systemic virus infection of mice. ACTA ACUST UNITED AC 2012; 209:2485-99. [PMID: 23230000 PMCID: PMC3526355 DOI: 10.1084/jem.20121015] [Citation(s) in RCA: 151] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The PD-1–PD-L1 pathway inhibits perforin-mediated killing of PD-L1+ vascular endothelial cells by CD8+ T cells, thereby limiting vascular damage during systemic LCMV infection. The inhibitory programmed death 1 (PD-1)–programmed death ligand 1 (PD-L1) pathway contributes to the functional down-regulation of T cell responses during persistent systemic and local virus infections. The blockade of PD-1–PD-L1–mediated inhibition is considered as a therapeutic approach to reinvigorate antiviral T cell responses. Yet previous studies reported that PD-L1–deficient mice develop fatal pathology during early systemic lymphocytic choriomeningitis virus (LCMV) infection, suggesting a host protective role of T cell down-regulation. As the exact mechanisms of pathology development remained unclear, we set out to delineate in detail the underlying pathogenesis. Mice deficient in PD-1–PD-L1 signaling or lacking PD-1 signaling in CD8 T cells succumbed to fatal CD8 T cell–mediated immunopathology early after systemic LCMV infection. In the absence of regulation via PD-1, CD8 T cells killed infected vascular endothelial cells via perforin-mediated cytolysis, thereby severely compromising vascular integrity. This resulted in systemic vascular leakage and a consequential collapse of the circulatory system. Our results indicate that the PD-1–PD-L1 pathway protects the vascular system from severe CD8 T cell–mediated damage during early systemic LCMV infection, highlighting a pivotal physiological role of T cell down-regulation and suggesting the potential development of immunopathological side effects when interfering with the PD-1–PD-L1 pathway during systemic virus infections.
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Affiliation(s)
- Helge Frebel
- Institute of Microbiology, ETH Zurich, 8093 Zurich, Switzerland
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Firner S, Onder L, Nindl V, Ludewig B. Tight control - decision-making during T cell-vascular endothelial cell interaction. Front Immunol 2012; 3:279. [PMID: 22969771 PMCID: PMC3427852 DOI: 10.3389/fimmu.2012.00279] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 08/16/2012] [Indexed: 01/28/2023] Open
Abstract
Vascular endothelial cells (ECs) form the inner layer of blood vessels and exert crucial functions during immune reactions including coagulation, inflammation, and regulation of innate immunity. Importantly, ECs can interact with T cells in an antigen-specific, i.e., T cell receptor-dependent manner. In this review, we will discuss EC actions and reactions during acute inflammation and focus on the interaction of T cells with ECs at two vascular sites: the high endothelial venule (HEV) of lymph nodes, and the vascular lesion during transplant vasculopathy (TV). HEVs are characterized by a highly active endothelium that produces chemoattracting factors and expresses adhesion molecules to facilitate transit of lymphocytes into the lymph node (LN) parenchyma. Yet, T cell-EC interaction at this anatomical location results neither in T cell activation nor tolerization. In contrast, the endothelium at sites of chronic inflammation, such as solid organ transplants, can promote T cell activation by upregulation of major histocompatibility complex (MHC) and costimulatory molecules. Importantly, a major function of ECs in inflamed tissues must be the maintenance of vascular integrity including the efficient attenuation of effector T cells that may damage the vascular bed. Thus, antigen-specific T cell-EC interaction is characterized by a tightly controlled balance between immunological ignorance, immune activation, and tolerization.
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Affiliation(s)
- Sonja Firner
- Institute of Immunobiology, Kantonsspital St. Gallen, St. Gallen Switzerland
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11
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Nindl V, Maier R, Ratering D, De Giuli R, Züst R, Thiel V, Scandella E, Di Padova F, Kopf M, Rudin M, Rülicke T, Ludewig B. Cooperation of Th1 and Th17 cells determines transition from autoimmune myocarditis to dilated cardiomyopathy. Eur J Immunol 2012; 42:2311-21. [DOI: 10.1002/eji.201142209] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 04/27/2012] [Accepted: 05/24/2012] [Indexed: 01/22/2023]
Affiliation(s)
- Veronika Nindl
- Institute of Immunobiology; Kantonal Hospital St. Gallen; St. Gallen; Switzerland
| | - Reinhard Maier
- Institute of Immunobiology; Kantonal Hospital St. Gallen; St. Gallen; Switzerland
| | - David Ratering
- Institute for Biomedical Engineering; University and ETH Zurich; Zurich; Switzerland
| | - Rita De Giuli
- Institute of Immunobiology; Kantonal Hospital St. Gallen; St. Gallen; Switzerland
| | - Roland Züst
- Institute of Immunobiology; Kantonal Hospital St. Gallen; St. Gallen; Switzerland
| | - Volker Thiel
- Institute of Immunobiology; Kantonal Hospital St. Gallen; St. Gallen; Switzerland
| | - Elke Scandella
- Institute of Immunobiology; Kantonal Hospital St. Gallen; St. Gallen; Switzerland
| | - Franco Di Padova
- Novartis Institutes for Biomedical Research (NIBR); Basel; Switzerland
| | - Manfred Kopf
- Institute of Integrative Biology; ETH Zürich; Zürich; Switzerland
| | - Markus Rudin
- Institute for Biomedical Engineering; University and ETH Zurich; Zurich; Switzerland
| | - Thomas Rülicke
- Institute of Laboratory Animal Science; University of Veterinary Medicine; Vienna; Austria
| | - Burkhard Ludewig
- Institute of Immunobiology; Kantonal Hospital St. Gallen; St. Gallen; Switzerland
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12
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Onder L, Scandella E, Chai Q, Firner S, Mayer CT, Sparwasser T, Thiel V, Rülicke T, Ludewig B. A novel bacterial artificial chromosome-transgenic podoplanin-cre mouse targets lymphoid organ stromal cells in vivo. Front Immunol 2011; 2:50. [PMID: 22566840 PMCID: PMC3342134 DOI: 10.3389/fimmu.2011.00050] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 09/19/2011] [Indexed: 12/25/2022] Open
Abstract
Stromal cells provide the structural foundation of secondary lymphoid organs (SLOs), and regulate leukocyte access and cell migration within the different compartments of spleen and lymph nodes (LNs). Furthermore, several stromal cell subsets have been implied in shaping of T cell responses through direct presentation of antigen. Despite significant gain of knowledge on the biology of different SLO-resident stromal cell subsets, their molecular and functional characterization has remained incomplete. To address this need, we have generated a bacterial artificial chromosome-transgenic mouse model that utilizes the podoplanin (pdpn) promoter to express the Cre-recombinase exclusively in stromal cells of SLOs. The characterization of the Pdpn–Cre mouse revealed transgene expression in subsets of fibroblastic reticular cells and lymphatic endothelial cells in LNs. Furthermore, the transgene facilitated the identification of a novel splenic perivascular stromal cell subpopulation that forms web-like structures around central arterioles. Assessment of the in vivo antigen expression in the genetically tagged stromal cells in Pdpn–Cre mice revealed activation of both MHC I and II-restricted TCR transgenic T cells. Taken together, stromal pdpn–Cre expression is well-suited to characterize the phenotype and to dissect the function of lymphoid organ stromal cells.
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Affiliation(s)
- Lucas Onder
- Institute of Immunobiology, Cantonal Hospital St. Gallen St. Gallen, Switzerland
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13
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Grudzinska MK, Bojakowski K, Soin J, Stassen F, Söderberg-Nauclér C, Religa P. RCMV increases intimal hyperplasia by inducing inflammation, MCP-1 expression and recruitment of adventitial cells to intima. HERPESVIRIDAE 2010; 1:7. [PMID: 21429242 PMCID: PMC3063229 DOI: 10.1186/2042-4280-1-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Accepted: 12/23/2010] [Indexed: 02/06/2023]
Abstract
Background Cytomegalovirus (CMV) infection has been associated with accelerated transplant vasculopathy. In this study, we assessed the effects of acute rat CMV (RCMV) infection on vessel remodeling in transplant vasculopathy, focusing on allograft morphology, inflammation and contribution of adventitial cells to intimal hyperplasia. Methods Infrarenal aorta was locally infected with RCMV and transplanted from female F344 rats to male Lewis rats. Graft samples were collected 2 and 8 weeks after transplantation and analyzed for intimal hyperplasia, collagen degradation and inflammation. Transplantation of aorta followed by transplantation of RCMV infected and labeled isogenic adventitia were performed to study migration of adventitial cells towards the intima. Results Intimal hyperplasia was increased threefold in infected allografts. RCMV induced apoptosis in the media, expression of matrix metalloproteinase 2, and decreased collagen deposits. Macrophage infiltration was increased in the infected allografts and resulted in increased production of MCP-1. RCMV-infected macrophages were observed in the adventitia and intima. Cells derived from infected adventitia migrated towards the intima of the allograft. Conclusions RCMV enhances infiltration of macrophages to the allografts, and thereby increases MCP-1 production and inflammation, followed by recruitment of adventitial cells to the intima and accelerated intimal hyperplasia.
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Affiliation(s)
- Monika K Grudzinska
- Experimental Cardiovascular Research Unit, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Krzysztof Bojakowski
- Department of General, Vascular and Oncologic Surgery, Medical University of Warsaw, Warsaw, Poland
| | - Joanna Soin
- Department of General Biochemistry and Nutrition, Medical University of Warsaw, Warsaw, Poland
| | - Frank Stassen
- Maastricht University Medical Center, Maastricht, The Netherlands
| | - Cecilia Söderberg-Nauclér
- Experimental Cardiovascular Research Unit, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
| | - Piotr Religa
- Experimental Cardiovascular Research Unit, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden
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Ke Y, Sun D, Jiang G, Kaplan HJ, Shao H. PD-L1(hi) retinal pigment epithelium (RPE) cells elicited by inflammatory cytokines induce regulatory activity in uveitogenic T cells. J Leukoc Biol 2010; 88:1241-9. [PMID: 20739617 DOI: 10.1189/jlb.0610332] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
We previously reported that after exposure to inflammatory cytokines, such as IL-17 and IFN-γ, RPE cells express increased amounts of suppressor of cytokine signaling, leading to general suppression of the inflammatory response. Here, we demonstrate that RPE cells expressed increased levels of PD-L1 in response to IL-17, IFN-γ, or Poly I:C. These PD-L1(hi) RPE cells inhibited the pathogenic activities of IRBP-specific T cells, which usually induced uveitis when injected into naïve mice (EAU). The suppressed pathogenicity of these uveitogenic T cells after exposure to PD-L1(hi) RPE cells could be partially reversed by anti-PD-L1 antibodies. Nevertheless, IRBP-specific T cells pre-exposed to PD-L1(hi) RPE cells displayed substantial suppressor activity, which strongly inhibited the activation of fresh IRBP-Teffs in response to subsequent antigenic challenge and when transferred into naïve mice, inhibited the induction of EAU by IRBP-Teff transfer. These findings suggest that inflammatory cytokine-triggered up-regulation of PD-L1 on RPE constitutes a critical factor for inducing infiltrated uveitogenic T cells with regulatory activities, which may accelerate the natural resolution of T cell-mediated intraocular inflammation.
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Affiliation(s)
- Yan Ke
- Department of Ophthalmology and Vision Sciences, University of Louisville, 301 E. Muhammad Ali Blvd., Louisville, KY 40202, USA.
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