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Kuroda C, Mochizuki C, Nakamura J, Nakamura M. Size-dependent distribution of fluorescent thiol-organosilica particles in popliteal lymph nodes of mice. OPENNANO 2022. [DOI: 10.1016/j.onano.2022.100114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Boutin S, Hildebrand D, Boulant S, Kreuter M, Rüter J, Pallerla SR, Velavan TP, Nurjadi D. Host factors facilitating SARS-CoV-2 virus infection and replication in the lungs. Cell Mol Life Sci 2021; 78:5953-5976. [PMID: 34223911 PMCID: PMC8256233 DOI: 10.1007/s00018-021-03889-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 06/01/2021] [Accepted: 06/18/2021] [Indexed: 02/07/2023]
Abstract
SARS-CoV-2 is the virus causing the major pandemic facing the world today. Although, SARS-CoV-2 primarily causes lung infection, a variety of symptoms have proven a systemic impact on the body. SARS-CoV-2 has spread in the community quickly infecting humans from all age, ethnicities and gender. However, fatal outcomes have been linked to specific host factors and co-morbidities such as age, hypertension, immuno-deficiencies, chronic lung diseases or metabolic disorders. A major shift in the microbiome of patients suffering of the coronavirus disease 2019 (COVID-19) have also been observed and is linked to a worst outcome of the disease. As many co-morbidities are already known to be associated with a dysbiosis of the microbiome such as hypertension, diabetes and metabolic disorders. Host factors and microbiome changes are believed to be involved as a network in the acquisition of the infection and the development of the diseases. We will review in detail in this manuscript, the immune response toward SARS-CoV-2 infection as well as the host factors involved in the facilitation and worsening of the infection. We will also address the impact of COVID-19 on the host's microbiome and secondary infection which also worsen the disease.
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Affiliation(s)
- Sébastien Boutin
- Department of Infectious Diseases, Medical Microbiology and Hygiene, University Hospital Heidelberg, Im Neuenheimer Feld 324, 69120, Heidelberg, Germany.
- Translational Lung Research Center Heidelberg (TLRC), German Center for Lung Research (DZL), University of Heidelberg, Heidelberg, Germany.
| | - Dagmar Hildebrand
- Department of Infectious Diseases, Medical Microbiology and Hygiene, University Hospital Heidelberg, Im Neuenheimer Feld 324, 69120, Heidelberg, Germany
| | - Steeve Boulant
- Division of Cellular Polarity and Viral Infection, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Infectious Diseases, Virology, University Hospital Heidelberg, Heidelberg, Germany
| | - Michael Kreuter
- Translational Lung Research Center Heidelberg (TLRC), German Center for Lung Research (DZL), University of Heidelberg, Heidelberg, Germany
- Center for Interstitial and Rare Lung Diseases, Pneumology, Thoraxklinik, University of Heidelberg, Heidelberg, Germany
| | - Jule Rüter
- Institute of Tropical Medicine, Universitätsklinikum Tübingen, Tübingen, Germany
| | | | - Thirumalaisamy P Velavan
- Institute of Tropical Medicine, Universitätsklinikum Tübingen, Tübingen, Germany
- Vietnamese-German Center for Medical Research, Hanoi, Vietnam
| | - Dennis Nurjadi
- Department of Infectious Diseases, Medical Microbiology and Hygiene, University Hospital Heidelberg, Im Neuenheimer Feld 324, 69120, Heidelberg, Germany
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From the Role of Microbiota in Gut-Lung Axis to SARS-CoV-2 Pathogenesis. Mediators Inflamm 2021; 2021:6611222. [PMID: 33953641 PMCID: PMC8059477 DOI: 10.1155/2021/6611222] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 03/04/2021] [Accepted: 04/07/2021] [Indexed: 12/21/2022] Open
Abstract
Severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) is responsible for the outbreak of a new viral respiratory infection. It has been demonstrated that the microbiota has a crucial role in establishing immune responses against respiratory infections, which are controlled by a bidirectional cross-talk, known as the “gut-lung axis.” The effects of microbiota on antiviral immune responses, including dendritic cell (DC) function and lymphocyte homing in the gut-lung axis, have been reported in the recent literature. Additionally, the gut microbiota composition affects (and is affected by) the expression of angiotensin-converting enzyme-2 (ACE2), which is the main receptor for SARS-CoV-2 and contributes to regulate inflammation. Several studies demonstrated an altered microbiota composition in patients infected with SARS-CoV-2, compared to healthy individuals. Furthermore, it has been shown that vaccine efficacy against viral respiratory infection is influenced by probiotics pretreatment. Therefore, the importance of the gut microbiota composition in the lung immune system and ACE2 expression could be valuable to provide optimal therapeutic approaches for SARS-CoV-2 and to preserve the symbiotic relationship of the microbiota with the host.
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Shi CC, Zhu HY, Li H, Zeng DL, Shi XL, Zhang YY, Lu Y, Ling LJ, Wang CY, Chen DF. Regulating the balance of Th17/Treg cells in gut-lung axis contributed to the therapeutic effect of Houttuynia cordata polysaccharides on H1N1-induced acute lung injury. Int J Biol Macromol 2020; 158:52-66. [PMID: 32353505 DOI: 10.1016/j.ijbiomac.2020.04.211] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 04/23/2020] [Accepted: 04/24/2020] [Indexed: 02/06/2023]
Abstract
Our previous study had demonstrated that oral administration of Houttuynia cordata polysaccharides (HCP) without in vitro antiviral activity ameliorated gut and lung injuries induced by influenza A virus (IAV) in mice. However, as macromolecules, HCP was hard to be absorbed in gastrointestinal tract and had no effect on lung injury when administrated intravenously. The action mechanism of HCP was thus proposed as regulating the gut mucosal-associated lymphoid tissue (GALT). Actually, HCP treatment restored the balance of Th17/Treg cells firstly in GALT and finally in the lung. HCP reduced the expression of chemokine CCL20 in the lung and regulated the balance of Th17/Treg carrying CCR6+ (the CCL20 receptor), which was associated with specific migration of Th17/Treg cells from GALT to lung. In vitro, HCP inhibited Th17 cell differentiation through the downregulation of phospho-STAT3, whereas it promoted Treg cell differentiation by upregulating phospho-STAT5. Furthermore, its therapeutic effect was abolished in RORγt-/- or Foxp3-/- mice. These findings indicated that oral administration of macromolecular polysaccharides like HCP might ameliorate lung injury in IAV infected mice via directly regulating the balance of Th17/Treg cells in gut-lung axis. Our results provided a potential mechanism underlying the therapeutic effect of polysaccharides on pulmonary infection.
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Affiliation(s)
- Chen-Chen Shi
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, China.
| | - Hai-Yan Zhu
- Department of Biological Medicines & Shanghai Engineering Research Center of ImmunoTherapeutics, School of Pharmacy, Fudan University.
| | - Hong Li
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Dong-Lin Zeng
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, China
| | - Xun-Long Shi
- Department of Biological Medicines & Shanghai Engineering Research Center of ImmunoTherapeutics, School of Pharmacy, Fudan University
| | - Yun-Yi Zhang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Yan Lu
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, China
| | - Li-Jun Ling
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, China
| | - Chang-Yue Wang
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, China
| | - Dao-Feng Chen
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai, China.
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Lettau M, Wiedemann A, Schrezenmeier EV, Giesecke-Thiel C, Dörner T. Human CD27+ memory B cells colonize a superficial follicular zone in the palatine tonsils with similarities to the spleen. A multicolor immunofluorescence study of lymphoid tissue. PLoS One 2020; 15:e0229778. [PMID: 32187186 PMCID: PMC7080255 DOI: 10.1371/journal.pone.0229778] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 02/13/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Memory B cell (mBC) induction and maintenance is one of the keys to long-term protective humoral immunity. MBCs are fundamental to successful medical interventions such as vaccinations and therapy in autoimmunity. However, their lifestyle and anatomic residence remain enigmatic in humans. Extrapolation from animal studies serves as a conceptual basis but might be misleading due to major anatomical distinctions between species. METHODS AND FINDINGS Multicolor immunofluorescence stainings on fixed and unfixed frozen tissue sections were established using primary antibodies coupled to haptens and secondary signal amplification. The simultaneous detection of five different fluorescence signals enabled the localization and characterization of human CD27+CD20+Ki67- mBCs for the first time within one section using laser scanning microscopy. As a result, human tonsillar mBCs were initially identified within their complex microenvironment and their relative location to naïve B cells, plasma cells and T cells could be directly studied and compared to the human splenic mBC niche. In all investigated tonsils (n = 15), mBCs appeared to be not only located in a so far subepithelial defined area but were also follicle associated with a previous undescribed gradual decline towards the follicular mantle comparable to human spleen. However, mBC areas around secondary follicles with large germinal centers (GCs) in tonsils showed interruptions and a general widening towards the epithelium while in spleen the mBC-containing marginal zones (MZ) around smaller GCs were relatively broad and symmetrical. Considerably fewer IgM+IgD+/- pre-switch compared to IgA+ or IgG+ post-switch mBCs were detected in tonsils in contrast to spleen. CONCLUSIONS This study extends existing insights into the anatomic residence of human mBCs showing structural similarities of the superficial follicular area in human spleen and tonsil. Our data support the debate of renaming the human splenic MZ to 'superficial zone' in order to be aware of the differences in rodents and, moreover, to consider this term equally for the human palatine tonsil.
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Affiliation(s)
- Marie Lettau
- Department of Rheumatology and Clinical Immunology, Charité University Medicine Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
| | - Annika Wiedemann
- Department of Rheumatology and Clinical Immunology, Charité University Medicine Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
| | - Eva Vanessa Schrezenmeier
- Department of Rheumatology and Clinical Immunology, Charité University Medicine Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
- Department of Nephrology and Medical Intensive Care, Charité University Medicine Berlin, Berlin, Germany
| | - Claudia Giesecke-Thiel
- Department of Rheumatology and Clinical Immunology, Formerly at the Charité University Medicine Berlin, Berlin, Germany
- Max Planck Institute for Molecular Genetics, Berlin, Germany
| | - Thomas Dörner
- Department of Rheumatology and Clinical Immunology, Charité University Medicine Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin (DRFZ), Berlin, Germany
- * E-mail:
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Kitazawa Y, Ueta H, Sawanobori Y, Katakai T, Yoneyama H, Ueha S, Matsushima K, Tokuda N, Matsuno K. Novel Targeting to XCR1 + Dendritic Cells Using Allogeneic T Cells for Polytopical Antibody Responses in the Lymph Nodes. Front Immunol 2019; 10:1195. [PMID: 31191552 PMCID: PMC6548820 DOI: 10.3389/fimmu.2019.01195] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 05/10/2019] [Indexed: 01/23/2023] Open
Abstract
Vaccination strategy that induce efficient antibody responses polytopically in most lymph nodes (LNs) against infections has not been established yet. Because donor-specific blood transfusion induces anti-donor class I MHC antibody production in splenectomized rats, we examined the mechanism and significance of this response. Among the donor blood components, T cells were the most efficient immunogens, inducing recipient T cell and B cell proliferative responses not only in the spleen, but also in the peripheral and gut LNs. Donor T cells soon migrated to the splenic T cell area and the LNs, with a temporary significant increase in recipient NK cells. XCR1+ resident dendritic cells (DCs), but not XCR1− DCs, selectively phagocytosed donor class I MHC+ fragments after 1 day. After 1.5 days, both DC subsets formed clusters with recipient CD4+ T cells, which proliferated within these clusters. Inhibition of donor T cell migration or depletion of NK cells by pretreatment with pertussis toxin or anti-asialoGM1 antibody, respectively, significantly suppressed DC phagocytosis and subsequent immune responses. Three allogeneic strains with different NK activities had the same response but with different intensity. Donor T cell proliferation was not required, indicating that the graft vs. host reaction is dispensable. Intravenous transfer of antigen-labeled and mitotic inhibitor-treated allogeneic, but not syngeneic, T cells induced a polytopical antibody response to labeled antigens in the LNs of splenectomized rats. These results demonstrate a novel mechanism of alloresponses polytopically in the secondary lymphoid organs (SLOs) induced by allogeneic T cells. Donor T cells behave as self-migratory antigen ferries to be delivered to resident XCR1+ DCs with negligible commitment of migratory DCs. Allogeneic T cells may be clinically applicable as vaccine vectors for polytopical prophylactic antibody production even in asplenic or hyposplenic individuals.
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Affiliation(s)
- Yusuke Kitazawa
- Department of Anatomy (Macro), School of Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Hisashi Ueta
- Department of Anatomy (Macro), School of Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Yasushi Sawanobori
- Department of Anatomy (Macro), School of Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Tomoya Katakai
- Department of Immunology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | | | - Satoshi Ueha
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba, Japan
| | - Kouji Matsushima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba, Japan
| | - Nobuko Tokuda
- Department of Anatomy (Macro), School of Medicine, Dokkyo Medical University, Tochigi, Japan
| | - Kenjiro Matsuno
- Department of Anatomy (Macro), School of Medicine, Dokkyo Medical University, Tochigi, Japan
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Haseeb M, Anwar MA, Choi S. Molecular Interactions Between Innate and Adaptive Immune Cells in Chronic Lymphocytic Leukemia and Their Therapeutic Implications. Front Immunol 2018; 9:2720. [PMID: 30542344 PMCID: PMC6277854 DOI: 10.3389/fimmu.2018.02720] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 11/05/2018] [Indexed: 12/15/2022] Open
Abstract
Innate immunity constitutes the first line of host defense against various anomalies in humans, and it also guides the adaptive immune response. The function of innate immune components and adaptive immune components are interlinked in hematological malignancies including chronic lymphocytic leukemia (CLL), and molecular interactions between innate and adaptive immune components are crucial for the development, progression and the therapeutic outcome of CLL. In this leukemia, genetic mutations in B cells and B cell receptors (BCR) are key driving factors along with evasion of cytotoxic T lymphocytes and promotion of regulatory T cells. Similarly, the release of various cytokines from CLL cells triggers the protumor phenotype in macrophages that further edges the CLL cells. Moreover, under the influence of various cytokines, dendritic cells are unable to mature and trigger T cell mediated antitumor response. The phenotypes of these cells are ultimately controlled by respective signaling pathways, the most notables are BCR, Wnt, Notch, and NF-κB, and their activation affects the cytokine profile that controls the pathogenesis of CLL, and challenge its treatment. There are several novel substances for CLL under clinical development, including kinase inhibitors, antibodies, and immune-modulators that offer new hopes. DC-based vaccines and CAR T cell therapy are promising tools; however, further studies are required to precisely dissect the molecular interactions among various molecular entities. In this review, we systematically discuss the involvement, common targets and therapeutic interventions of various cells for the better understanding and therapy of CLL.
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Affiliation(s)
- Muhammad Haseeb
- Department of Molecular Science and Technology, Ajou University, Suwon, South Korea
| | - Muhammad Ayaz Anwar
- Department of Molecular Science and Technology, Ajou University, Suwon, South Korea
| | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon, South Korea
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8
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Anand S, Mande SS. Diet, Microbiota and Gut-Lung Connection. Front Microbiol 2018; 9:2147. [PMID: 30283410 PMCID: PMC6156521 DOI: 10.3389/fmicb.2018.02147] [Citation(s) in RCA: 241] [Impact Index Per Article: 40.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 08/21/2018] [Indexed: 12/19/2022] Open
Abstract
The gut microbial community (Gut microbiota) is known to impact metabolic functions as well as immune responses in our body. Diet plays an important role in determining the composition of the gut microbiota. Gut microbes help in assimilating dietary nutrients which are indigestible by humans. The metabolites produced by them not only modulate gastro-intestinal immunity, but also impact distal organs like lung and brain. Micro-aspiration of gut bacteria or movement of sensitized immune cells through lymph or bloodstream can also influence immune response of other organs. Dysbiosis in gut microbiota has been implicated in several lung diseases, including allergy, asthma and cystic fibrosis. The bi-directional cross-talk between gut and lung (termed as Gut-Lung axis) is best exemplified by intestinal disturbances observed in lung diseases. Some of the existing probiotics show beneficial effects on lung health. A deeper understanding of the gut microbiome which comprises of all the genetic material within the gut microbiota and its role in respiratory disorders is likely to help in designing appropriate probiotic cocktails for therapeutic applications.
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Affiliation(s)
- Swadha Anand
- Bio-Sciences R&D Division, TCS Research, Tata Consultancy Services Ltd., Pune, India
| | - Sharmila S Mande
- Bio-Sciences R&D Division, TCS Research, Tata Consultancy Services Ltd., Pune, India
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Min J, Yang D, Kim M, Haam K, Yoo A, Choi JH, Schraml BU, Kim YS, Kim D, Kang SJ. Inflammation induces two types of inflammatory dendritic cells in inflamed lymph nodes. Exp Mol Med 2018; 50:e458. [PMID: 29546878 PMCID: PMC5898896 DOI: 10.1038/emm.2017.292] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 09/27/2017] [Indexed: 12/12/2022] Open
Abstract
The spatiotemporal regulation of immune cells in lymph nodes (LNs) is crucial for mounting protective T-cell responses, which are orchestrated by dendritic cells (DCs). However, it is unclear how the DC subsets are altered by the inflammatory milieu of LNs. Here, we show that the inflamed LNs of Listeria-infected mice are characterized by the clustering of neutrophils and monocytes and IFN-γ production. Significantly, the early inflammatory responses are coupled with the differentiation of not one, but two types of CD64+CD11c+MHCII+ inflammatory DCs. Through the assessment of chemokine receptor dependency, gene expression profiles, growth factor requirements and DC-specific lineage mapping, we herein unveil a novel inflammatory DC population (we termed ‘CD64+ cDCs’) that arises from conventional DCs (cDCs), distinguishable from CD64+ monocyte-derived DCs (moDCs) in inflamed LNs. We determined that Listeria-induced type I IFN is a critical inflammatory cue for the development of CD64+ cDCs but not CD64+ moDCs. Importantly, CD64+ cDCs displayed a higher potential to activate T cells than CD64+ moDCs, whereas the latter showed more robust expression of inflammatory genes. Although CD64+ and CD64− cDCs were able to cross-present soluble antigens at a high dose to CD8+ T cells, CD64+ cDCs concentrated and cross-presented a minute amount of soluble antigens delivered via CD64 (FcγRI) as immune complexes. These findings reveal the role of early inflammatory responses in driving the differentiation of two inflammatory DC subsets empowered with distinct competencies.
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Affiliation(s)
- Jiyoun Min
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Dongchan Yang
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Mirang Kim
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Keeok Haam
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Anji Yoo
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Jae-Hoon Choi
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, Korea
| | - Barbara U Schraml
- Walter-Brendel-Centre for Experimental Medicine, Klinikum der Universität München, Planegg Martinsried, Germany.,Biomedical Center, Ludwig-Maximilians-University, Planegg Martinsried, Germany
| | - Yong Sung Kim
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Dongsup Kim
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Suk-Jo Kang
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, Korea
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Uchida T, Ueta H, Xu XD, Hirakawa J, Tahara K, Zhou S, Sawanobori Y, Simmons S, Kitazawa Y, Kawashima H, Matsuno K. Rapid immunosurveillance by recirculating lymphocytes in the rat intestine: critical role of unsulfated sialyl-Lewis X on high endothelial venules of the Peyer's patches. Int Immunol 2018; 30:23-33. [PMID: 29365122 PMCID: PMC5917783 DOI: 10.1093/intimm/dxx072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 01/03/2018] [Indexed: 12/17/2022] Open
Abstract
Naive lymphocytes systemically recirculate for immunosurveillance inspecting foreign antigens and pathogens in the body. Trafficking behavior such as the migration pathway and transit time within the gastrointestinal tract, however, remains to be elucidated. Rat thoracic duct lymphocytes (TDLs) were transferred to a congeneic host that had undergone mesenteric lymphadenectomy. The migration pathway was investigated using newly developed four-color immunohistochemistry and immunofluorescence. Donor TDLs showed rapid transition in gut tissues from which they emerged in mesenteric lymph around 4 h after intravenous injection. Immunohistochemistry showed that donor TDLs predominantly transmigrated across high endothelial venules (HEVs) at the interfollicular area of the Peyer's patches (PPs), then exited into the LYVE-1+ efferent lymphatics, that were close to the venules. The rapid recirculation depended largely on the local expression of unsulfated sialyl-Lewis X on these venules where putative dendritic cells (DCs) were associated underneath. Recruited naive T cells briefly made contact with resident DCs before exiting to the lymphatics in the steady state. In some transplant settings, however, the T cells retained contact with DCs and were sensitized and differentiated into activated T cells. In conclusion, we directly demonstrated that lymphocyte recirculation within the gut is a very rapid process. The interfollicular area of PPs functions as a strategically central site for rapid immunosurveillance where HEVs, efferent lymphatics and resident DCs converge. PPs can, however, generate alloreactive T cells, leading to exacerbation of graft-versus-host disease or gut allograft rejection.
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Affiliation(s)
- Tomomi Uchida
- Department of Anatomy (Macro), Dokkyo Medical University, School of Medicine, Tochigi, Japan
| | - Hisashi Ueta
- Department of Anatomy (Macro), Dokkyo Medical University, School of Medicine, Tochigi, Japan
| | - Xue-Dong Xu
- Department of General Surgery, Dalian Medical University, 1st Affiliated Hospital, Dalian, China
| | - Jotaro Hirakawa
- Laboratory of Microbiology and Molecular Genetics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Kazunori Tahara
- Division of Surgery, Department of Surgical Specialties, National Center for Child Health and Development, Tokyo, Japan
| | - Shu Zhou
- Department of Gynecology, Dalian Medical University, 1st Affiliated Hospital, Dalian, China
| | - Yasushi Sawanobori
- Department of Anatomy (Macro), Dokkyo Medical University, School of Medicine, Tochigi, Japan
| | - Szandor Simmons
- Department of Immunology and Cell Biology, Graduate School of Medicine and Frontier Biosciences and WPI-Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Yusuke Kitazawa
- Department of Anatomy (Macro), Dokkyo Medical University, School of Medicine, Tochigi, Japan
| | - Hiroto Kawashima
- Laboratory of Microbiology and Molecular Genetics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Kenjiro Matsuno
- Department of Anatomy (Macro), Dokkyo Medical University, School of Medicine, Tochigi, Japan
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11
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Yu E, Ueta H, Kimura H, Kitazawa Y, Sawanobori Y, Matsuno K. Graft-Versus-Host Disease Following Liver Transplantation: Development of a High-Incidence Rat Model and a Selective Prevention Method. Am J Transplant 2017; 17:979-991. [PMID: 27732765 DOI: 10.1111/ajt.14077] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 10/03/2016] [Accepted: 10/04/2016] [Indexed: 01/25/2023]
Abstract
Graft-versus-host disease (GvHD) following liver transplantation (LT) is a rare but serious complication with no presently available animal model and no preventive measures. To develop a rat model of GvHD after LT (LT-GvHD), we preconditioned hosts with sublethal irradiation plus reduction of natural killer (NK) cells with anti-CD8α mAb treatment, which invariably resulted in acute LT-GvHD. Compared with those in the peripheral counterpart, graft CD4+ CD25- passenger T cells showed lower alloreactivities in mixed leukocyte culture. Immunohistology revealed that donor CD4+ T cells migrated and formed clusters with host dendritic cells in secondary lymphoid organs, with early expansion and subsequent accumulation in target organs. For selectively preventing GvHD, donor livers were perfused ex vivo with organ preservation media containing anti-TCRαβ mAb. T cell-depleted livers almost completely suppressed clinical GvHD such that host rats survived for >100 days. Our results showed that passenger T cells could develop typical LT-GvHD if resistant cells such as host radiosensitive cells and host radioresistant NK cells were suppressed. Selective ex vivo T cell depletion prevented LT-GvHD without affecting host immunity or graft function. This method might be applicable to clinical LT in prediagnosed high-risk donor-recipient combinations and for analyzing immunoregulatory mechanisms of the liver.
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Affiliation(s)
- E Yu
- Department of Anatomy (Macro), Dokkyo Medical University, Tochigi, Japan.,Department of Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - H Ueta
- Department of Anatomy (Macro), Dokkyo Medical University, Tochigi, Japan
| | - H Kimura
- Department of Anatomy (Macro), Dokkyo Medical University, Tochigi, Japan
| | - Y Kitazawa
- Department of Anatomy (Macro), Dokkyo Medical University, Tochigi, Japan
| | - Y Sawanobori
- Department of Anatomy (Macro), Dokkyo Medical University, Tochigi, Japan
| | - K Matsuno
- Department of Anatomy (Macro), Dokkyo Medical University, Tochigi, Japan
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12
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Chen YCE, Mapp S, Blumenthal A, Burgess ML, Mazzieri R, Mattarollo SR, Mollee P, Gill D, Saunders NA. The duality of macrophage function in chronic lymphocytic leukaemia. Biochim Biophys Acta Rev Cancer 2017; 1868:176-182. [PMID: 28347751 DOI: 10.1016/j.bbcan.2017.03.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 03/09/2017] [Accepted: 03/21/2017] [Indexed: 12/23/2022]
Abstract
Chronic lymphocytic leukaemia (CLL) is the most common adult leukaemia and, in some patients, is accompanied by resistance to both chemotherapeutics and immunotherapeutics. In this review we will discuss the role of tumour associated macrophages (TAMs) in promoting CLL cell survival and resistance to immunotherapeutics. In addition, we will discuss mechanisms by which TAMs suppress T-cell mediated antitumour responses. Thus, targeting macrophages could be used to i) reduce the leukaemic burden via the induction of T-cell-mediated antitumour responses, ii) to reduce pro-survival signalling and enhance response to conventional chemotherapeutics or iii) enhance the response to therapeutic antibodies in current clinical use.
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Affiliation(s)
- Y C E Chen
- University of Queensland Diamantina Institute, University of Queensland, Translational Research Institute, Princess Alexandra Hospital, Brisbane, Qld, Australia
| | - S Mapp
- Department of Haematology, Division of Cancer Services, Princess Alexandra Hospital, Brisbane, Qld, Australia
| | - A Blumenthal
- University of Queensland Diamantina Institute, University of Queensland, Translational Research Institute, Princess Alexandra Hospital, Brisbane, Qld, Australia
| | - M L Burgess
- University of Queensland Diamantina Institute, University of Queensland, Translational Research Institute, Princess Alexandra Hospital, Brisbane, Qld, Australia; Department of Haematology, Division of Cancer Services, Princess Alexandra Hospital, Brisbane, Qld, Australia
| | - R Mazzieri
- University of Queensland Diamantina Institute, University of Queensland, Translational Research Institute, Princess Alexandra Hospital, Brisbane, Qld, Australia
| | - S R Mattarollo
- University of Queensland Diamantina Institute, University of Queensland, Translational Research Institute, Princess Alexandra Hospital, Brisbane, Qld, Australia
| | - P Mollee
- Department of Haematology, Division of Cancer Services, Princess Alexandra Hospital, Brisbane, Qld, Australia
| | - D Gill
- University of Queensland Diamantina Institute, University of Queensland, Translational Research Institute, Princess Alexandra Hospital, Brisbane, Qld, Australia; Department of Haematology, Division of Cancer Services, Princess Alexandra Hospital, Brisbane, Qld, Australia
| | - N A Saunders
- University of Queensland Diamantina Institute, University of Queensland, Translational Research Institute, Princess Alexandra Hospital, Brisbane, Qld, Australia.
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He Y, Wen Q, Yao F, Xu D, Huang Y, Wang J. Gut-lung axis: The microbial contributions and clinical implications. Crit Rev Microbiol 2016; 43:81-95. [PMID: 27781554 DOI: 10.1080/1040841x.2016.1176988] [Citation(s) in RCA: 157] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Gut microbiota interacts with host immune system in ways that influence the development of disease. Advances in respiratory immune system also broaden our knowledge of the interaction between host and microbiome in the lung. Increasing evidence indicated the intimate relationship between the gastrointestinal tract and respiratory tract. Exacerbations of chronic gut and lung disease have been shown to share key conceptual features with the disorder and dysregulation of the microbial ecosystem. In this review, we discuss the impact of gut and lung microbiota on disease exacerbation and progression, and the recent understanding of the immunological link between the gut and the lung, the gut-lung axis.
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Affiliation(s)
- Yang He
- a Department of Cancer Center, Union Hospital , Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Qu Wen
- a Department of Cancer Center, Union Hospital , Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Fangfang Yao
- a Department of Cancer Center, Union Hospital , Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Dong Xu
- b Department of Infectious Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Yuancheng Huang
- b Department of Infectious Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
| | - Junshuai Wang
- c Department of Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China
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Shin R, Itoh Y, Kataoka M, Iino-Miura S, Miura R, Mizutani T, Fujisawa T. Anti-tumor activity of heat-killed Lactobacillus plantarum BF-LP284 on Meth-A tumor cells in BALB/c mice. Int J Food Sci Nutr 2016; 67:641-9. [DOI: 10.1080/09637486.2016.1185771] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Ryoichi Shin
- Central Institute for Health Science, A. L. A. Corporation, Tokyo, Japan
- Laboratory of Food Hygiene, School of Food Science and Technology, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Yukie Itoh
- Central Institute for Health Science, A. L. A. Corporation, Tokyo, Japan
| | - Motoyuki Kataoka
- Central Institute for Health Science, A. L. A. Corporation, Tokyo, Japan
| | - Shiori Iino-Miura
- Central Institute for Health Science, A. L. A. Corporation, Tokyo, Japan
| | - Ryosuke Miura
- Central Institute for Health Science, A. L. A. Corporation, Tokyo, Japan
| | - Takeo Mizutani
- Central Institute for Health Science, A. L. A. Corporation, Tokyo, Japan
| | - Tomohiko Fujisawa
- Laboratory of Food Hygiene, School of Food Science and Technology, Nippon Veterinary and Life Science University, Tokyo, Japan
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15
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Yu E, Goto M, Ueta H, Kitazawa Y, Sawanobori Y, Kariya T, Sasaki M, Matsuno K. Expression of area-specific M2-macrophage phenotype by recruited rat monocytes in duct-ligation pancreatitis. Histochem Cell Biol 2016; 145:659-73. [PMID: 26860866 PMCID: PMC4848343 DOI: 10.1007/s00418-016-1406-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/06/2016] [Indexed: 12/01/2022]
Abstract
Acute pancreatitis remains a disease of uncertain pathogenesis and no established specific therapy. Previously, we found a predominant increase and active proliferation of macrophages in the inflamed tissues of a rat duct-ligation pancreatitis model. To analyze the origin and possible role of these macrophages, we investigated their in situ cellular kinetics in a rat model of duct-ligation pancreatitis using a recently established method of multicolor immunostaining for macrophage markers and for proliferating cells with ethynyl deoxyuridine. To detect monocyte-derived macrophages, green fluorescent protein-transgenic (GFP+) leukocytes were transferred to monocyte-depleted recipients. In the inflamed pancreas, infiltrating macrophages were mainly two phenotypes, CD68+CD163− round cells and CD68+CD163+ large polygonal cells, both of which showed active proliferation. In the interlobular area, the proportions of CD68+CD163low and CD68+CD163high cells increased over time. Most expressed the M2-macrophage markers CD206 and arginase 1. In contrast, in the interacinar area, CD68+ cells did not upregulate CD163 and CD206, but ~30 % of them expressed the M1 marker nitric oxide synthase 2 on day 4. GFP+-recruited cells were primarily CD68+CD163− monocytes on day 1 and showed phenotypic changes similar to those of the monocyte non-depleted groups. In conclusion, infiltrating macrophages mostly formed two distinct subpopulations in different areas: monocyte-derived macrophages with the M2 phenotype in the interlobular area or non-M2 phenotype in the interacinar area. Involvement of resident macrophages might be minor in this model. These results are the first demonstration of an upregulated M2 phenotype in rat inflammatory monocytes, which may promote tissue repair.
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Affiliation(s)
- Enqiao Yu
- Department of Anatomy (Macro), School of Medicine, Dokkyo Medical University, Mibu, Tochigi, 321-0293, Japan.,Department of General Surgery, Affiliated Wujiang Hospital of Nantong University, Suzhou, Jiangsu, China
| | - Mataro Goto
- NHO Miyakonojo Medical Center, Miyazaki, Japan
| | - Hisashi Ueta
- Department of Anatomy (Macro), School of Medicine, Dokkyo Medical University, Mibu, Tochigi, 321-0293, Japan
| | - Yusuke Kitazawa
- Department of Anatomy (Macro), School of Medicine, Dokkyo Medical University, Mibu, Tochigi, 321-0293, Japan
| | - Yasushi Sawanobori
- Department of Anatomy (Macro), School of Medicine, Dokkyo Medical University, Mibu, Tochigi, 321-0293, Japan
| | - Taro Kariya
- Department of Anatomy (Macro), School of Medicine, Dokkyo Medical University, Mibu, Tochigi, 321-0293, Japan
| | - Masaru Sasaki
- Department of Anatomy (Macro), School of Medicine, Dokkyo Medical University, Mibu, Tochigi, 321-0293, Japan
| | - Kenjiro Matsuno
- Department of Anatomy (Macro), School of Medicine, Dokkyo Medical University, Mibu, Tochigi, 321-0293, Japan.
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16
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Direct evidence for activated CD8+ T cell transmigration across portal vein endothelial cells in liver graft rejection. J Gastroenterol 2016; 51:985-98. [PMID: 26891909 PMCID: PMC5037149 DOI: 10.1007/s00535-016-1169-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 12/27/2015] [Indexed: 02/04/2023]
Abstract
BACKGROUND Lymphocyte recruitment into the portal tract is crucial not only for homeostatic immune surveillance but also for many liver diseases. However, the exact route of entry for lymphocytes into portal tract is still obscure. We investigated this question using a rat hepatic allograft rejection model. METHODS A migration route was analyzed by immunohistological methods including a recently developed scanning electron microscopy method. Transmigration-associated molecules such as selectins, integrins, and chemokines and their receptors expressed by hepatic vessels and recruited T-cells were analyzed by immunohistochemistry and flow cytometry. RESULTS The immunoelectron microscopic analysis clearly showed CD8β(+) cells passing through the portal vein (PV) endothelia. Furthermore, the migrating pathway seemed to pass through the endothelial cell body. Local vascular cell adhesion molecule-1 (VCAM-1) expression was induced in PV endothelial cells from day 2 after liver transplantation. Although intercellular adhesion molecule-1 (ICAM-1) expression was also upregulated, it was restricted to sinusoidal endothelia. Recipient T-cells in the graft perfusate were CD25(+)CD44(+)ICAM-1(+)CXCR3(+)CCR5(-) and upregulated α4β1 or αLβ2 integrins. Immunohistochemistry showed the expression of CXCL10 in donor MHCII(high) cells in the portal tract as well as endothelial walls of PV. CONCLUSIONS We show for the first time direct evidence of T-cell transmigration across PV endothelial cells during hepatic allograft rejection. Interactions between VCAM-1 on endothelia and α4β1 integrin on recipient effector T-cells putatively play critical roles in adhesion and transmigration through endothelia. A chemokine axis of CXCL10 and CXCR3 also may be involved.
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17
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Kitazawa Y, Ueta H, Hünig T, Sawanobori Y, Matsuno K. A novel multicolor immunostaining method using ethynyl deoxyuridine for analysis of in situ immunoproliferative response. Histochem Cell Biol 2015; 144:195-208. [PMID: 25976155 PMCID: PMC4534512 DOI: 10.1007/s00418-015-1329-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2015] [Indexed: 01/08/2023]
Abstract
Immune responses are generally accompanied by antigen presentation and proliferation and differentiation of antigen-specific lymphocytes (immunoproliferation), but analysis of these events in situ on tissue sections is very difficult. We have developed a new method of simultaneous multicolor immunofluorescence staining for immunohistology and flow cytometry using a thymidine analogue, 5-ethynyl-2′-deoxyuridine (EdU). Because of the small size of azide dye using click chemistry and elimination of DNA denaturation steps, EdU staining allowed for immunofluorescence staining of at least four colors including two different markers on a single-cell surface, which is impossible with the standard 5-bromo-2′-deoxyuridine method. By using two rat models, successfully detected parameters were the cluster of differentiation antigens including phenotypic and functional markers of various immune cells, histocompatibility complex antigens, and even some nuclear transcription factors. Proliferating cells could be further sorted and used for RT-PCR analysis. This method thus enables functional in situ time-kinetic analysis of immunoproliferative responses in a distinct domain of the lymphoid organs, which are quantitatively confirmed by flow cytometry.
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Affiliation(s)
- Yusuke Kitazawa
- />Department of Anatomy (Macro), Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293 Japan
| | - Hisashi Ueta
- />Department of Anatomy (Macro), Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293 Japan
| | - Thomas Hünig
- />Institute for Virology and Immunobiology, University of Würzburg, Würzburg, Germany
| | - Yasushi Sawanobori
- />Department of Anatomy (Macro), Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293 Japan
| | - Kenjiro Matsuno
- />Department of Anatomy (Macro), Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293 Japan
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18
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Limmroth V, Barkhof F, Desem N, Diamond MP, Tachas G. CD49d antisense drug ATL1102 reduces disease activity in patients with relapsing-remitting MS. Neurology 2014; 83:1780-8. [PMID: 25239835 PMCID: PMC4240428 DOI: 10.1212/wnl.0000000000000926] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objective: This study evaluated the efficacy and safety of ATL1102, an antisense oligonucleotide that selectively targets the RNA for human CD49d, the α subunit of very late antigen 4, in patients with relapsing-remitting multiple sclerosis (RRMS). Methods: In a multicenter, double-blind, placebo-controlled randomized phase II trial, 77 patients with RRMS were treated with 200 mg of ATL1102 subcutaneously injected 3 times in the first week and twice weekly for 7 weeks or placebo and monitored for a further 8 weeks. MRI scans were taken at baseline and weeks 4, 8, 12, and 16. The primary endpoint was the cumulative number of new active lesions (either new gadolinium-enhancing T1 lesions or nonenhancing new or enlarging T2 lesions) at weeks 4, 8, and 12. Results: A total of 72 patients completed the study and 74 intention-to-treat patients were assessed. ATL1102 significantly reduced the cumulative number of new active lesions by 54.4% compared to placebo (mean 3.0 [SD 6.12] vs 6.2 [9.89], p = 0.01). The cumulative number of new gadolinium-enhancing T1 lesions was reduced by 67.9% compared to placebo (p = 0.002). Treatment-emergent adverse events included mild to moderate injection site erythema and decrease in platelet counts that returned to within the normal range after dosing. Conclusions: In patients with RRMS, ATL1102 significantly reduced disease activity after 8 weeks of treatment and was generally well-tolerated. This trial provides evidence for the first time that antisense oligonucleotides may be used as a therapeutic approach in neuroimmunologic disorders. Classification: This study provides Class I evidence that for patients with RRMS, the antisense oligonucleotide ATL1102 reduces the number of new active head MRI lesions.
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Affiliation(s)
- Volker Limmroth
- From the Department of Neurology (V.L.), Cologne City Hospitals, University of Cologne, Germany; the Department of Radiology (F.B.), VU Medical Centre, Amsterdam, the Netherlands; and Antisense Therapeutics Ltd. (N.D., M.P.D., G.T.), Melbourne, Australia
| | - Frederik Barkhof
- From the Department of Neurology (V.L.), Cologne City Hospitals, University of Cologne, Germany; the Department of Radiology (F.B.), VU Medical Centre, Amsterdam, the Netherlands; and Antisense Therapeutics Ltd. (N.D., M.P.D., G.T.), Melbourne, Australia
| | - Nuket Desem
- From the Department of Neurology (V.L.), Cologne City Hospitals, University of Cologne, Germany; the Department of Radiology (F.B.), VU Medical Centre, Amsterdam, the Netherlands; and Antisense Therapeutics Ltd. (N.D., M.P.D., G.T.), Melbourne, Australia
| | - Mark P Diamond
- From the Department of Neurology (V.L.), Cologne City Hospitals, University of Cologne, Germany; the Department of Radiology (F.B.), VU Medical Centre, Amsterdam, the Netherlands; and Antisense Therapeutics Ltd. (N.D., M.P.D., G.T.), Melbourne, Australia
| | - George Tachas
- From the Department of Neurology (V.L.), Cologne City Hospitals, University of Cologne, Germany; the Department of Radiology (F.B.), VU Medical Centre, Amsterdam, the Netherlands; and Antisense Therapeutics Ltd. (N.D., M.P.D., G.T.), Melbourne, Australia.
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Nakagawa R, Togawa A, Nagasawa T, Nishikawa SI. Peyer’s Patch Inducer Cells Play a Leading Role in the Formation of B and T Cell Zone Architecture. THE JOURNAL OF IMMUNOLOGY 2013; 190:3309-18. [DOI: 10.4049/jimmunol.1202766] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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20
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Yu B, Ueta H, Kitazawa Y, Tanaka T, Adachi K, Kimura H, Morita M, Sawanobori Y, Qian HX, Kodama T, Matsuno K. Two immunogenic passenger dendritic cell subsets in the rat liver have distinct trafficking patterns and radiosensitivities. Hepatology 2012; 56:1532-45. [PMID: 22511480 DOI: 10.1002/hep.25795] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
UNLABELLED The aim of this study was to investigate the trafficking patterns, radiation sensitivities, and functions of conventional dendritic cell (DC) subsets in the rat liver in an allotransplantation setting. We examined DCs in the liver, hepatic lymph, and graft tissues and recipient secondary lymphoid organs after liver transplantation from rats treated or untreated by sublethal irradiation. We identified two distinct immunogenic DC subsets. One was a previously reported population that underwent blood-borne migration to the recipient's secondary lymphoid organs, inducing systemic CD8(+) T-cell responses; these DCs are a radiosensitive class II major histocompatibility complex (MHCII)(+) CD103(+) CD172a(+) CD11b(-) CD86(+) subset. Another was a relatively radioresistant MHCII(+) CD103(+) CD172a(+) CD11b(+) CD86(+) subset that steadily appeared in the hepatic lymph. After transplantation, the second subset migrated to the parathymic lymph nodes (LNs), regional peritoneal cavity nodes, or persisted in the graft. Irradiation completely eliminated the migration and immunogenicity of the first subset, but only partly suppressed the migration of the second subset and the CD8(+) T-cell response in the parathymic LNs. The grafts were acutely rejected, and intragraft CD8(+) T-cell and FoxP3(+) regulatory T-cell responses were unchanged. The radioresistant second subset up-regulated CD25 and had high allostimulating activity in the mixed leukocyte reaction, suggesting that this subset induced CD8(+) T-cell responses in the parathymic LNs and in the graft by the direct allorecognition pathway, leading to the rejection. CONCLUSION Conventional rat liver DCs contain at least two distinct immunogenic passenger subsets: a radiosensitive blood-borne migrant and a relatively radioresistant lymph-borne migrant. LNs draining the peritoneal cavity should be recognized as a major site of the intrahost T-cell response by the lymph-borne migrant. This study provides key insights into liver graft rejection and highlights the clinical implications of immunogenic DC subsets.
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Affiliation(s)
- Bin Yu
- Department of Anatomy (Macro), Dokkyo Medical University, Tochigi, Japan
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21
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Umemoto E, Otani K, Ikeno T, Verjan Garcia N, Hayasaka H, Bai Z, Jang MH, Tanaka T, Nagasawa T, Ueda K, Miyasaka M. Constitutive plasmacytoid dendritic cell migration to the splenic white pulp is cooperatively regulated by CCR7- and CXCR4-mediated signaling. THE JOURNAL OF IMMUNOLOGY 2012; 189:191-9. [PMID: 22634622 DOI: 10.4049/jimmunol.1200802] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Although the spleen plays an important role in host defense against infection, the mechanism underlying the migration of the innate immune cells, plasmacytoid dendritic cells (pDCs), into the spleen remains ill defined. In this article, we report that pDCs constitutively migrate into the splenic white pulp (WP) in a manner dependent on the chemokine receptors CCR7 and CXCR4. In CCR7-deficient mice and CCR7 ligand-deficient mice, compared with wild-type (WT) mice, substantially fewer pDCs were found in the periarteriolar lymphoid sheath of the splenic WP under steady-state conditions. In addition, the migration of adoptively transferred CCR7-deficient pDCs into the WP was significantly worse than that of WT pDCs, supporting the idea that pDC trafficking to the splenic WP requires CCR7 signaling. WT pDCs responded to a CCR7 ligand with modest chemotaxis and ICAM-1 binding in vitro, and priming with the CCR7 ligand enabled the pDCs to migrate efficiently toward low concentrations of CXCL12 in a CXCR4-dependent manner, raising the possibility that CCR7 signaling enhances CXCR4-mediated pDC migration. In agreement with this hypothesis, CCL21 and CXCL12 were colocalized on fibroblastic reticular cells in the T cell zone and in the marginal zone bridging channels, through which pDCs appeared to enter the WP. Furthermore, functional blockage of CCR7 and CXCR4 abrogated pDC trafficking into the WP. Collectively, these results strongly suggest that pDCs employ both CCR7 and CXCR4 as critical chemokine receptors to migrate into the WP under steady-state conditions.
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Affiliation(s)
- Eiji Umemoto
- Laboratory of Immunodynamics, Department of Microbiology and Immunology, Osaka University Graduate School of Medicine, Suita 565-0871, Japan
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Sagar D, Foss C, El Baz R, Pomper MG, Khan ZK, Jain P. Mechanisms of dendritic cell trafficking across the blood-brain barrier. J Neuroimmune Pharmacol 2012; 7:74-94. [PMID: 21822588 PMCID: PMC3276728 DOI: 10.1007/s11481-011-9302-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Accepted: 07/25/2011] [Indexed: 12/14/2022]
Abstract
Although the central nervous system (CNS) is considered to be an immunoprivileged site, it is susceptible to a host of autoimmune as well as neuroinflammatory disorders owing to recruitment of immune cells across the blood-brain barrier into perivascular and parenchymal spaces. Dendritic cells (DCs), which are involved in both primary and secondary immune responses, are the most potent immune cells in terms of antigen uptake and processing as well as presentation to T cells. In light of the emerging importance of DC traficking into the CNS, these cells represent good candidates for targeted immunotherapy against various neuroinflammatory diseases. This review focuses on potential physiological events and receptor interactions between DCs and the microvascular endothelial cells of the brain as they transmigrate into the CNS during degeneration and injury. A clear understanding of the underlying mechanisms involved in DC migration may advance the development of new therapies that manipulate these mechanistic properties via pharmacologic intervention. Furthermore, therapeutic validation should be in concurrence with the molecular imaging techniques that can detect migration of these cells in vivo. Since the use of noninvasive methods to image migration of DCs into CNS has barely been explored, we highlighted potential molecular imaging techniques to achieve this goal. Overall, information provided will bring this important leukocyte population to the forefront as key players in the immune cascade in the light of the emerging contribution of DCs to CNS health and disease.
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Affiliation(s)
- Divya Sagar
- Drexel Institute for Biotechnology and Virology Research, and Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Catherine Foss
- Department of Radiology and Radiological Sciences, Johns Hopkins Medical Institutions, Baltimore, MD 21231, USA
| | - Rasha El Baz
- Drexel Institute for Biotechnology and Virology Research, and Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Martin G. Pomper
- Department of Radiology and Radiological Sciences, Johns Hopkins Medical Institutions, Baltimore, MD 21231, USA
| | - Zafar K. Khan
- Drexel Institute for Biotechnology and Virology Research, and Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19129, USA
| | - Pooja Jain
- Drexel Institute for Biotechnology and Virology Research, and Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA 19129, USA
- Department of Microbiology & Immunology, Drexel Institute for Biotechnology & Virology Research, Drexel University College of Medicine, 3805 Old Easton Road, Doylestown, PA 18902, USA
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