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Schälter F, Azizov V, Frech M, Dürholz K, Schmid E, Hendel A, Sarfati I, Maeda Y, Sokolova M, Miyagawa I, Focke K, Sarter K, van Baarsen LGM, Krautwald S, Schett G, Zaiss MM. CCL19-Positive Lymph Node Stromal Cells Govern the Onset of Inflammatory Arthritis via Tropomyosin Receptor Kinase. Arthritis Rheumatol 2024; 76:857-868. [PMID: 38268500 DOI: 10.1002/art.42807] [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: 05/03/2023] [Revised: 10/30/2023] [Accepted: 01/22/2024] [Indexed: 01/26/2024]
Abstract
OBJECTIVE The study objective was to assess the role of CCL19+ lymph node stromal cells of the joint-draining popliteal lymph node (pLN) for the development of arthritis. METHODS CCL19+ lymph node stromal cells were spatiotemporally depleted for five days in the pLN before the onset of collagen-induced arthritis (CIA) using Ccl19-Cre × iDTR mice. In addition, therapeutic treatment with recombinant CCL19-immunoglobulin G (IgG), locally injected in the footpad, was used to confirm the results. RNA sequencing of lymph node stromal cells combined with T cell coculture assays using tropomyosin receptor kinase (Trk) family inhibitors together with in vivo local pLN small interfering RNA (siRNA) treatments were used to elucidate the pathway by which CCL19+ lymph node stromal cells initiate the onset of arthritis. RESULTS Spatiotemporal depletion of CCL19+ lymph node stromal cells prevented disease onset in CIA mice. These inhibitory effects could be mimicked by local CCL19-IgG treatment. The messenger RNA sequencing analyses showed that CCL19+ lymph node stromal cells down-regulated the expression of the tropomyosin receptor kinase A (TrkA) just before disease onset. Blocking TrkA in lymph node stromal cells led to increased T cell proliferation in in vitro coculture assays. Similar effects were observed with the pan-Trk inhibitor larotrectinib in cocultures of lymph node stromal cells of patients with rheumatoid arthritis and T cells. Finally, local pLN treatment with TrkA inhibitor and TrkA siRNA led to exacerbated arthritis scores. CONCLUSION CCL19+ lymph node stromal cells are crucially involved in the development of inflammatory arthritis. Therefore, targeting of CCL19+ lymph node stromal cells via TRK could provide a tool to prevent arthritis.
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Affiliation(s)
- Fabian Schälter
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Vugar Azizov
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Michael Frech
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Kerstin Dürholz
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Eva Schmid
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Anna Hendel
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Ilann Sarfati
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Yuichi Maeda
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany, and Laboratory of Immune Regulation, Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Maria Sokolova
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Ippei Miyagawa
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany, and The First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - Kristin Focke
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Kerstin Sarter
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Lisa G M van Baarsen
- Department of Rheumatology and Clinical Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC and University of Amsterdam, Amsterdam, Netherlands
| | - Stefan Krautwald
- Department of Nephrology and Hypertension, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Georg Schett
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Mario M Zaiss
- Department of Internal Medicine 3, Rheumatology and Immunology, and Deutsches Zentrumlmmuntherapie (DZI), Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
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Song J, Deshpande T, Zhang X, Hannocks MJ, Lycke N, Cardell SL, Sorokin L. The extracellular matrix of lymph node reticular fibers modulates follicle border interactions and germinal center formation. iScience 2023; 26:106753. [PMID: 37234087 PMCID: PMC10206498 DOI: 10.1016/j.isci.2023.106753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 12/15/2022] [Accepted: 04/23/2023] [Indexed: 05/27/2023] Open
Abstract
Germinal center (GC) formation and antibody production in lymph node follicles require coordinated interactions between B-cells, T-cells and dendritic cells (DCs), orchestrated by the extracellular matrix-rich reticular fiber (RF) network. We describe a unique laminin 523-containing RF network around and between follicles that associates with PDGFrecβhighCCL19lowgp38low fibroblastic reticular cells (FRC). In the absence of FRC expression of laminin α5 (pdgfrb-cre:Lama5fl/fl), pre-Tfh-cells, B-cells and DCs are displaced from follicle borders, correlating with fewer Tfh-cells and GC B-cells. Total DCs are not altered in pdgfrb-cre:Lama5fl/fl mice, but cDC2s, which localize to laminin α5 in RFs at follicle borders, are reduced. In addition, PDGFrecβhighCCL19lowgp38low FRCs show lower Ch25h expression, required for 7α,25-dihydroxycholesterol synthesis that attracts pre-Tfh-cells, B-cells and DCs to follicle borders. We propose that RF basement membrane components represent a type of tissue memory that guides the localization and differentiation of both specialized FRC and DC populations, required for normal lymph node function.
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Affiliation(s)
- Jian Song
- Institute of Physiological Chemistry and Pathobiochemistry and Cells-in-Motion Interfaculty Centre (CIMIC), University of Muenster, 48149 Muenster, Germany
| | - Tushar Deshpande
- Institute of Physiological Chemistry and Pathobiochemistry and Cells-in-Motion Interfaculty Centre (CIMIC), University of Muenster, 48149 Muenster, Germany
| | - Xueli Zhang
- Institute of Physiological Chemistry and Pathobiochemistry and Cells-in-Motion Interfaculty Centre (CIMIC), University of Muenster, 48149 Muenster, Germany
| | - Melanie-Jane Hannocks
- Institute of Physiological Chemistry and Pathobiochemistry and Cells-in-Motion Interfaculty Centre (CIMIC), University of Muenster, 48149 Muenster, Germany
| | - Nils Lycke
- Department of Microbiology and Immunology, University of Gothenburg, 40530 Gothenburg, Sweden
| | - Susanna L. Cardell
- Department of Microbiology and Immunology, University of Gothenburg, 40530 Gothenburg, Sweden
| | - Lydia Sorokin
- Institute of Physiological Chemistry and Pathobiochemistry and Cells-in-Motion Interfaculty Centre (CIMIC), University of Muenster, 48149 Muenster, Germany
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Lymph Node Fibroblastic Reticular Cells Attenuate Immune Responses Through Induction of Tolerogenic Macrophages at Early Stage of Transplantation. Transplantation 2023; 107:140-155. [PMID: 35876378 DOI: 10.1097/tp.0000000000004245] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Fibroblastic reticular cells (FRCs) are a type of stromal cells located in the T zone in secondary lymphoid organs. Previous studies showed that FRCs possess the potential to promote myeloid differentiation. We aim to investigate whether FRCs in lymph nodes (LNs) could induce tolerogenic macrophage generation and further influence T-cell immunity at an early stage of allogeneic hematopoietic stem cell transplantation (allo-HSCT). METHODS LNs were assayed to confirm the existence of proliferating macrophages after allo-HSCT. Ex vivo-expanded FRCs and bone marrow cells were cocultured to verify the generation of macrophages. Real-time quantitative PCR and ELISA assays were performed to observe the cytokines expressed by FRC. Transcriptome sequencing was performed to compare the difference between FRC-induced macrophages (FMs) and conventional macrophages. Mixed lymphocyte reaction and the utilization of FMs in acute graft-versus-host disease (aGVHD) mice were used to test the inhibitory function of FMs in T-cell immunity in vitro and in vivo. RESULTS We found a large number of proliferating macrophages near FRCs in LNs with tolerogenic phenotype under allo-HSCT conditions. Neutralizing anti-macrophage colony-stimulating factor receptor antibody abolished FMs generation in vitro. Phenotypic analysis and transcriptome sequencing suggested FMs possessed immunoinhibitory function. Mixed lymphocyte reaction proved that FMs could inhibit T-cell activation and differentiation toward Th1/Tc1 cells. Injection of FMs in aGVHD mice effectively attenuated aGVHD severity and mortality. CONCLUSIONS This study has revealed a novel mechanism of immune regulation through the generation of FRC-induced tolerogenic macrophages in LNs at an early stage of allo-HSCT.
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Jiang L, Yilmaz M, Uehara M, Cavazzoni CB, Kasinath V, Zhao J, Naini SM, Li X, Banouni N, Fiorina P, Shin SR, Tullius SG, Bromberg JS, Sage PT, Abdi R. Characterization of Leptin Receptor + Stromal Cells in Lymph Node. Front Immunol 2022; 12:730438. [PMID: 35111151 PMCID: PMC8801441 DOI: 10.3389/fimmu.2021.730438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 12/29/2021] [Indexed: 11/14/2022] Open
Abstract
Lymph node (LN)-resident stromal cells play an essential role in the proper functioning of LNs. The stromal compartment of the LN undergoes significant compensatory changes to produce a milieu amenable for regulation of the immune response. We have identified a distinct population of leptin receptor-expressing (LepR+) stromal cells, located in the vicinity of the high endothelial venules (HEVs) and lymphatics. These LepR+ stromal cells expressed markers for fibroblastic reticular cells (FRCs), but they lacked markers for follicular dendritic cells (FDCs) and marginal reticular cells (MRCs). Leptin signaling deficiency led to heightened inflammatory responses within the LNs of db/db mice, leakiness of HEVs, and lymphatic fragmentation. Leptin signaling through the JAK/STAT pathway supported LN stromal cell survival and promoted the anti-inflammatory properties of these cells. Conditional knockout of the LepR+ stromal cells in LNs resulted in HEV and extracellular matrix (ECM) abnormalities. Treatment of ob/ob mice with an agonist leptin fusion protein restored the microarchitecture of LNs, reduced intra-LN inflammatory responses, and corrected metabolic abnormalities. Future studies are needed to study the importance of LN stomal cell dysfunction to the pathogenesis of inflammatory responses in type 2 diabetes (T2D) in humans.
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Affiliation(s)
- Liwei Jiang
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
- Institute of Health and Medical Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, China
| | - Mine Yilmaz
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Mayuko Uehara
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Cecilia B. Cavazzoni
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Vivek Kasinath
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Jing Zhao
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Said Movahedi Naini
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Xiaofei Li
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Naima Banouni
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Paolo Fiorina
- Division of Nephrology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Su Ryon Shin
- Biomaterials Innovation Research Center, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA, United States
| | - Stefan G. Tullius
- Division of Transplant Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Jonathan S. Bromberg
- Departments of Surgery and Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Peter T. Sage
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Reza Abdi
- Transplantation Research Center, Renal Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
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5
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Ferreira BO, Gamarra LF, Nucci MP, Oliveira FA, Rego GNA, Marti L. LN-Derived Fibroblastic Reticular Cells and Their Impact on T Cell Response—A Systematic Review. Cells 2021; 10:1150. [DOI: https:/doi.org/10.3390/cells10051150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
Abstract
Fibroblastic reticular cells (FRCs), usually found and isolated from the T cell zone of lymph nodes, have recently been described as much more than simple structural cells. Originally, these cells were described to form a conduit system called the “reticular fiber network” and for being responsible for transferring the lymph fluid drained from tissues through afferent lymphatic vessels to the T cell zone. However, nowadays, these cells are described as being capable of secreting several cytokines and chemokines and possessing the ability to interfere with the immune response, improving it, and also controlling lymphocyte proliferation. Here, we performed a systematic review of the several methods employed to investigate the mechanisms used by fibroblastic reticular cells to control the immune response, as well as their ability in determining the fate of T cells. We searched articles indexed and published in the last five years, between 2016 and 2020, in PubMed, Scopus, and Cochrane, following the PRISMA guidelines. We found 175 articles published in the literature using our searching strategies, but only 24 articles fulfilled our inclusion criteria and are discussed here. Other articles important in the built knowledge of FRCs were included in the introduction and discussion. The studies selected for this review used different strategies in order to access the contribution of FRCs to different mechanisms involved in the immune response: 21% evaluated viral infection in this context, 13% used a model of autoimmunity, 8% used a model of GvHD or cancer, 4% used a model of Ischemic-reperfusion injury (IRI). Another four studies just targeted a particular signaling pathway, such as MHC II expression, FRC microvesicles, FRC secretion of IL-15, FRC network, or ablation of the lysophosphatidic acid (LPA)-producing ectoenzyme autotaxin. In conclusion, our review shows the strategies used by several studies to isolate and culture fibroblastic reticular cells, the models chosen by each one, and dissects their main findings and implications in homeostasis and disease.
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6
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LN-Derived Fibroblastic Reticular Cells and Their Impact on T Cell Response-A Systematic Review. Cells 2021; 10:cells10051150. [PMID: 34068712 PMCID: PMC8151444 DOI: 10.3390/cells10051150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 04/11/2021] [Accepted: 04/23/2021] [Indexed: 12/27/2022] Open
Abstract
Fibroblastic reticular cells (FRCs), usually found and isolated from the T cell zone of lymph nodes, have recently been described as much more than simple structural cells. Originally, these cells were described to form a conduit system called the “reticular fiber network” and for being responsible for transferring the lymph fluid drained from tissues through afferent lymphatic vessels to the T cell zone. However, nowadays, these cells are described as being capable of secreting several cytokines and chemokines and possessing the ability to interfere with the immune response, improving it, and also controlling lymphocyte proliferation. Here, we performed a systematic review of the several methods employed to investigate the mechanisms used by fibroblastic reticular cells to control the immune response, as well as their ability in determining the fate of T cells. We searched articles indexed and published in the last five years, between 2016 and 2020, in PubMed, Scopus, and Cochrane, following the PRISMA guidelines. We found 175 articles published in the literature using our searching strategies, but only 24 articles fulfilled our inclusion criteria and are discussed here. Other articles important in the built knowledge of FRCs were included in the introduction and discussion. The studies selected for this review used different strategies in order to access the contribution of FRCs to different mechanisms involved in the immune response: 21% evaluated viral infection in this context, 13% used a model of autoimmunity, 8% used a model of GvHD or cancer, 4% used a model of Ischemic-reperfusion injury (IRI). Another four studies just targeted a particular signaling pathway, such as MHC II expression, FRC microvesicles, FRC secretion of IL-15, FRC network, or ablation of the lysophosphatidic acid (LPA)-producing ectoenzyme autotaxin. In conclusion, our review shows the strategies used by several studies to isolate and culture fibroblastic reticular cells, the models chosen by each one, and dissects their main findings and implications in homeostasis and disease.
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7
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Elsadek AE, Al-Shokary AH, Abdelghani WE, Kamal NM, Ibrahim AO, El-Shorbagy HH, Suliman HA, Barseem NF, Abdel Maksoud YH, Azab SM, Nour El Din DM. Serum Levels of Interleukin-6 and Tumor Necrosis Factor Alpha in Children With Attention-Deficit Hyperactivity Disorder. J Pediatr Neurosci 2021; 15:402-408. [PMID: 33936305 PMCID: PMC8078629 DOI: 10.4103/jpn.jpn_1_20] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 03/19/2020] [Accepted: 03/30/2020] [Indexed: 11/20/2022] Open
Abstract
Background: Attention-deficit hyperactivity disorder (ADHD) is a common disorder in children, but its etiology and pathogenesis are still unclear. Aims: The aims of this study were to measure the level of serum interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-α) as markers of immune system involvement in children with ADHD, and to study their correlation with symptoms severity of ADHD. Materials and Methods: The study was conducted on 80 children diagnosed as ADHD based on the criteria adapted from the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition. Eighty healthy children of matched age and sex served as a control group. All children enrolled in the study were subjected to history taking, clinical examination, and psychometric tests. Assay for serum IL-6 and TNF-α for all patients and controls was performed using enzyme-linked immunosorbent assay. Results: The mean serum level of IL-6 was 26.11 ± 11.14 and 6.23 ± 2.52 in children with ADHD and controls, respectively. Children with ADHD showed significantly higher serum IL-6 levels than the control group (P = 0.001). Serum IL-6 showed no significant correlation with the intelligence quotient (IQ) or the Abbreviated Conners’ Rating Scale scores for parents. However, TNF-α showed no significant differences between the two groups and no significant correlation with the IQ or the Abbreviated Conners’ Rating Scale scores for parents. Conclusion: Serum IL-6 levels were significantly higher in children with ADHD compared to controls; however, the IL-6 levels did not correlate with ADHD symptoms severity. Increased IL-6 levels may contribute to the etiology of ADHD.
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Affiliation(s)
| | | | | | - Naglaa M Kamal
- Department of Pediatric/Pediatric Hepatology, Faculty of Medicine, Cairo University, Cairo, Egypt.,Department of Pediatric/Pediatric Hepatology and Gastroenterology, Alhada and Taif Armed Forces Hospitals, Taif, Saudi Arabia
| | | | - Hatem H El-Shorbagy
- Department of Pediatric/Pediatric Neurology, Faculty of Medicine, Menoufia University, Shebeen Elkom, Egypt.,Department of Pediatric/Pediatric Neurology, Alhada and Taif Armed Forces, Hospitals, Taif, Saudi Arabia
| | | | - Naglaa Fathy Barseem
- Pediatric Department, Faculty of Medicine, Menoufia University, Shebeen Elkom, Egypt
| | | | - Sanaa M Azab
- Pediatric Department, Al-Azhar University, Cairo, Egypt
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Biasci D, Smoragiewicz M, Connell CM, Wang Z, Gao Y, Thaventhiran JED, Basu B, Magiera L, Johnson TI, Bax L, Gopinathan A, Isherwood C, Gallagher FA, Pawula M, Hudecova I, Gale D, Rosenfeld N, Barmpounakis P, Popa EC, Brais R, Godfrey E, Mir F, Richards FM, Fearon DT, Janowitz T, Jodrell DI. CXCR4 inhibition in human pancreatic and colorectal cancers induces an integrated immune response. Proc Natl Acad Sci U S A 2020; 117:28960-28970. [PMID: 33127761 PMCID: PMC7682333 DOI: 10.1073/pnas.2013644117] [Citation(s) in RCA: 139] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Inhibition of the chemokine receptor CXCR4 in combination with blockade of the PD-1/PD-L1 T cell checkpoint induces T cell infiltration and anticancer responses in murine and human pancreatic cancer. Here we elucidate the mechanism by which CXCR4 inhibition affects the tumor immune microenvironment. In human immune cell-based chemotaxis assays, we find that CXCL12-stimulated CXCR4 inhibits the directed migration mediated by CXCR1, CXCR3, CXCR5, CXCR6, and CCR2, respectively, chemokine receptors expressed by all of the immune cell types that participate in an integrated immune response. Inhibiting CXCR4 in an experimental cancer medicine study by 1-wk continuous infusion of the small-molecule inhibitor AMD3100 (plerixafor) induces an integrated immune response that is detected by transcriptional analysis of paired biopsies of metastases from patients with microsatellite stable colorectal and pancreatic cancer. This integrated immune response occurs in three other examples of immune-mediated damage to noninfected tissues: Rejecting renal allografts, melanomas clinically responding to anti-PD1 antibody therapy, and microsatellite instable colorectal cancers. Thus, signaling by CXCR4 causes immune suppression in human pancreatic ductal adenocarcinoma and colorectal cancer by impairing the function of the chemokine receptors that mediate the intratumoral accumulation of immune cells.
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Affiliation(s)
- Daniele Biasci
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
- Medical Research Council Toxicology Unit, University of Cambridge, Cambridge, CB2 1QW, UK
| | - Martin Smoragiewicz
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
| | - Claire M Connell
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
- Department of Oncology, Cambridge University Hospitals NHS Foundation Trust, CB2 0QQ Cambridge, UK
| | - Zhikai Wang
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - Ya Gao
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
| | - James E D Thaventhiran
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
- Medical Research Council Toxicology Unit, University of Cambridge, Cambridge, CB2 1QW, UK
| | - Bristi Basu
- Department of Oncology, Cambridge University Hospitals NHS Foundation Trust, CB2 0QQ Cambridge, UK
- Department of Oncology, University of Cambridge, Cambridge Biomedical Campus, Cambridge, CB2 0XZ, UK
| | - Lukasz Magiera
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
| | - T Isaac Johnson
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
| | - Lisa Bax
- Department of Oncology, Cambridge University Hospitals NHS Foundation Trust, CB2 0QQ Cambridge, UK
| | - Aarthi Gopinathan
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
| | - Christopher Isherwood
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
| | - Ferdia A Gallagher
- Department of Radiology, Cambridge University Hospitals NHS Foundation Trust, CB2 0QQ Cambridge, UK
| | - Maria Pawula
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
| | - Irena Hudecova
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
| | - Davina Gale
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
| | - Nitzan Rosenfeld
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
| | - Petros Barmpounakis
- Department of Statistics, Athens University of Economics and Business, 104 34 Athens, Greece
| | | | - Rebecca Brais
- Department of Pathology, Cambridge University Hospitals NHS Foundation Trust, CB2 0QQ Cambridge, UK
| | - Edmund Godfrey
- Department of Radiology, Cambridge University Hospitals NHS Foundation Trust, CB2 0QQ Cambridge, UK
| | - Fraz Mir
- Clinical Pharmacology Unit, University of Cambridge, CB2 1TN Cambridge, UK
| | - Frances M Richards
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
| | - Douglas T Fearon
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK;
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
- Weill Cornell Medicine, New York, NY 10065
| | - Tobias Janowitz
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK;
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724
- Northwell Health Cancer Institute, New Hyde Park, NY 11042
| | - Duncan I Jodrell
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, CB2 ORE, UK
- Cancer Research UK Centre-Cambridge, Cancer Research UK Cambridge Institute, Cambridge CB2 0RE, UK
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9
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Fletcher AL, Baker AT, Lukacs-Kornek V, Knoblich K. The fibroblastic T cell niche in lymphoid tissues. Curr Opin Immunol 2020; 64:110-116. [PMID: 32497868 DOI: 10.1016/j.coi.2020.04.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/19/2020] [Accepted: 04/21/2020] [Indexed: 12/22/2022]
Abstract
Fibroblastic reticular cells (FRCs) are a necessary immunological component for T cell health. These myofibroblasts are specialized for immune cell support and develop in locations where T and B lymphocyte priming occurs, usually secondary lymphoid organs, but also tertiary lymphoid structures and sites of chronic inflammation. This review describes their dual supportive and suppressive functions and emerging evidence on the co-ordination required to balance these competing roles.
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Affiliation(s)
- Anne L Fletcher
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Australia; Institute of Immunology and Immunotherapy, University of Birmingham, UK.
| | - Alfie T Baker
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Australia
| | - Veronika Lukacs-Kornek
- Institute of Experimental Immunology, Rheinische-Friedrichs-Wilhelms University of Bonn, 53127, Bonn, Germany
| | - Konstantin Knoblich
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Australia; Institute of Immunology and Immunotherapy, University of Birmingham, UK
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10
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Huetter J, Gritzan U, Gutcher I, Doecke WD, Luetke-Eversloh MV, Golfier S, Roider HG, Frisk AL, Hunter J, Pow A, Drake A, Levine Z, Levy O, Azulay M, Barbiro I, Cojocaru G, Vaknin I, Kreft B, Roese L. Characterization of BAY 1905254, an Immune Checkpoint Inhibitor Targeting the Immunoglobulin-Like Domain Containing Receptor 2 (ILDR2). Cancer Immunol Res 2020; 8:895-911. [DOI: 10.1158/2326-6066.cir-19-0321] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 11/15/2019] [Accepted: 04/13/2020] [Indexed: 11/16/2022]
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11
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YAP/TAZ direct commitment and maturation of lymph node fibroblastic reticular cells. Nat Commun 2020; 11:519. [PMID: 31980640 PMCID: PMC6981200 DOI: 10.1038/s41467-020-14293-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 12/31/2019] [Indexed: 02/07/2023] Open
Abstract
Fibroblastic reticular cells (FRCs) are immunologically specialized myofibroblasts of lymphoid organ, and FRC maturation is essential for structural and functional properties of lymph nodes (LNs). Here we show that YAP and TAZ (YAP/TAZ), the final effectors of Hippo signaling, regulate FRC commitment and maturation. Selective depletion of YAP/TAZ in FRCs impairs FRC growth and differentiation and compromises the structural organization of LNs, whereas hyperactivation of YAP/TAZ enhances myofibroblastic characteristics of FRCs and aggravates LN fibrosis. Mechanistically, the interaction between YAP/TAZ and p52 promotes chemokine expression that is required for commitment of FRC lineage prior to lymphotoxin-β receptor (LTβR) engagement, whereas LTβR activation suppresses YAP/TAZ activity for FRC maturation. Our findings thus present YAP/TAZ as critical regulators of commitment and maturation of FRCs, and hold promise for better understanding of FRC-mediated pathophysiologic processes. Fibroblastic reticular cells (FRC) are important for lymph node (LN) structure and function. Here the authors show that the YAP/TAZ complex downstream of Hippo signalling regulates FRC commitment and maturation, with YAP/TAZ deficiency impairing FRC differentiation, while hyperactivation of YAZ/TAZ inducing myofibroblastic FRCs and LN fibrosis.
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12
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Stein JV, Ruef N. Regulation of global CD8 + T-cell positioning by the actomyosin cytoskeleton. Immunol Rev 2020; 289:232-249. [PMID: 30977193 DOI: 10.1111/imr.12759] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/04/2019] [Accepted: 02/06/2019] [Indexed: 12/12/2022]
Abstract
CD8+ T cells have evolved as one of the most motile mammalian cell types, designed to continuously scan peptide-major histocompatibility complexes class I on the surfaces of other cells. Chemoattractants and adhesion molecules direct CD8+ T-cell homing to and migration within secondary lymphoid organs, where these cells colocalize with antigen-presenting dendritic cells in confined tissue volumes. CD8+ T-cell activation induces a switch to infiltration of non-lymphoid tissue (NLT), which differ in their topology and biophysical properties from lymphoid tissue. Here, we provide a short overview on regulation of organism-wide trafficking patterns during naive T-cell recirculation and their switch to non-lymphoid tissue homing during activation. The migratory lifestyle of CD8+ T cells is regulated by their actomyosin cytoskeleton, which translates chemical signals from surface receptors into mechanical work. We explore how properties of the actomyosin cytoskeleton and its regulators affect CD8+ T cell function in lymphoid and non-lymphoid tissue, combining recent findings in the field of cell migration and actin network regulation with tissue anatomy. Finally, we hypothesize that under certain conditions, intrinsic regulation of actomyosin dynamics may render NLT CD8+ T-cell populations less dependent on input from extrinsic signals during tissue scanning.
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Affiliation(s)
- Jens V Stein
- Department of Oncology, Microbiology and Immunology, University of Fribourg, Fribourg, Switzerland
| | - Nora Ruef
- Department of Oncology, Microbiology and Immunology, University of Fribourg, Fribourg, Switzerland
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13
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Postigo-Fernandez J, Farber DL, Creusot RJ. Phenotypic alterations in pancreatic lymph node stromal cells from human donors with type 1 diabetes and NOD mice. Diabetologia 2019; 62:2040-2051. [PMID: 31486854 PMCID: PMC6812633 DOI: 10.1007/s00125-019-04984-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 07/15/2019] [Indexed: 01/08/2023]
Abstract
AIMS/HYPOTHESIS Tolerance induction in lymph nodes can be mediated by both haematopoietic cells (e.g. specific dendritic cells subsets) and by non-haematopoietic cells (e.g. lymph node stromal cells [LNSCs]) when they present peripheral tissue antigens to autoreactive T cells. LNSCs normally regulate T cell trafficking and survival and help to maintain peripheral tolerance by exerting immunosuppressive effects. However, whether autoimmunity can be associated with defective tolerogenic functions of LNSCs is unknown and studies aimed at characterising LNSCs in humans are lacking. We hypothesised that dysregulated T cell responses in pancreatic lymph nodes (PLNs) from donors with type 1 diabetes and from NOD mice may be associated with altered LNSC function. METHODS We analysed PLNs from donors with type 1 diabetes and NOD mice for LNSC distribution and phenotype using flow cytometry. We assessed the expression of tolerance-related genes in different subsets of LNSCs from human donors, as well as in a population of dendritic cells enriched in autoimmune regulator (AIRE)+ cells and identified as HLA-DRhigh CD45low. RESULTS The relative frequency of different LNSC subsets was altered in both donors with type 1 diabetes and NOD mice, and both MHC class II and programmed death-ligand 1 (PD-L1) expression were upregulated in human type 1 diabetes. Tolerance-related genes showed similar expression profiles between mouse and human LNSCs at steady state but were generally upregulated in the context of human type 1 diabetes, while, at the same time, many such genes were downregulated in the AIRE-enriched dendritic cell population. CONCLUSION/INTERPRETATION Our study shows that LNSCs are substantially altered in type 1 diabetes, but, surprisingly, they exhibit an enhanced tolerogenic phenotype along with increased antigen-presenting potential, which may indicate an attempt to offset dendritic cell-related tolerogenic defects in tolerance. Thus, LNSCs could constitute alternative therapeutic targets in which to deliver antigens to help re-establish tolerance and prevent or treat type 1 diabetes. DATA AVAILABILITY All data generated or analysed during this study are included in the published article (and its online supplementary files). Biomark gene expression data were deposited on the Mendeley repository at https://data.mendeley.com/datasets/d9rdzdmvyf/1 . Any other raw datasets are available from the corresponding author on reasonable request. No applicable resources were generated or analysed during the current study.
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Affiliation(s)
- Jorge Postigo-Fernandez
- Columbia Center for Translational Immunology, Columbia University Medical Center, 650 W. 168th Street, New York, NY, 10032, USA
- Department of Medicine, Columbia University Medical Center, New York, NY, USA
- Naomi Berrie Diabetes Center, Columbia University Medical Center, New York, NY, USA
| | - Donna L Farber
- Columbia Center for Translational Immunology, Columbia University Medical Center, 650 W. 168th Street, New York, NY, 10032, USA
- Department of Surgery, Columbia University Medical Center, New York, NY, USA
- Department of Microbiology & Immunology, Columbia University Medical Center, New York, NY, USA
| | - Rémi J Creusot
- Columbia Center for Translational Immunology, Columbia University Medical Center, 650 W. 168th Street, New York, NY, 10032, USA.
- Department of Medicine, Columbia University Medical Center, New York, NY, USA.
- Naomi Berrie Diabetes Center, Columbia University Medical Center, New York, NY, USA.
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14
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Cortese S, Angriman M, Comencini E, Vincenzi B, Maffeis C. Association between inflammatory cytokines and ADHD symptoms in children and adolescents with obesity: A pilot study. Psychiatry Res 2019; 278:7-11. [PMID: 31129493 DOI: 10.1016/j.psychres.2019.05.030] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 05/17/2019] [Accepted: 05/19/2019] [Indexed: 11/19/2022]
Abstract
Whilst the association between Attention-Deficit/Hyperactivity Disorder (ADHD) and obesity is supported by meta-analytic evidence, the mechanisms underpinning this link need to be further elucidated. Inflammatory processes may increase the risk of ADHD symptoms in individuals with obesity. This pilot study set out to start testing this hypothesis by assessing the correlation between serum levels of inflammatory cytokines and ADHD symptoms severity in a sample of children and adolescents with obesity. We measured ADHD symptoms severity in 52 children/adolescents with obesity (BMI > 95th centile) with the Conners questionnaire, revised, short version, parent (CPRS-R:S) and teacher (CTRS-R:S) versions. Additionally, a categorical diagnosis of ADHD was established using the Kiddie-SADS-PL. Serum levels of IL-6, Il-10, and TNF-alpha were also obtained. The prevalence of ADHD was 9.6%. We found a significant correlation between IL-6, as well as TNF-alpha, and hyperactivity/impulsivity subscores of the CPRS-R:S and CTRS-R:S, that held even after controlling for BMI and oppositional symptoms. This study provides a rationale for larger, longitudinal studies to gain insight into inflammatory processes underpinning the link between obesity and ADHD. This line of research has the potential to lead to novel, pathophysiologically-based management strategies for individuals with obesity and ADHD.
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Affiliation(s)
- Samuele Cortese
- Center for Innovation in Mental Health, School of Psychology, Faculty of Environmental and Life Sciences, and Clinical and Experimental Sciences (CNS and Psychiatry), Faculty of Medicine, University of Southampton, UK; Solent NHS Trust, Southampton SO171BJ, UK; New York University Child Study Center, New York, NY 10016, USA; Division of Psychiatry and Applied Psychology, School of Medicine, University of Nottingham, Nottingham NG7 2UH, UK.
| | - Marco Angriman
- Child Neurology and Neurorehabilitation Unit, Department of Pediatrics, Hospital of Bolzano, 39100, Italy
| | | | - Brenda Vincenzi
- Klinik für Kinder und Jugendpsychiatrie und Psychotherapie, Psychiatrische Universitätsklinik, Zürich 8032 Switzerland
| | - Claudio Maffeis
- Pediatric Diabetes and Metabolic Disorders Unit, University Hospital, University of Verona, Verona 37128 Italy.
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15
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Hope JL, Stairiker CJ, Bae EA, Otero DC, Bradley LM. Striking a Balance-Cellular and Molecular Drivers of Memory T Cell Development and Responses to Chronic Stimulation. Front Immunol 2019; 10:1595. [PMID: 31379821 PMCID: PMC6650570 DOI: 10.3389/fimmu.2019.01595] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 06/26/2019] [Indexed: 01/11/2023] Open
Abstract
Effective adaptive immune responses are characterized by stages of development and maturation of T and B cell populations that respond to disturbances in the host homeostasis in cases of both infections and cancer. For the T cell compartment, this begins with recognition of specific peptides by naïve, antigen-inexperienced T cells that results in their activation, proliferation, and differentiation, which generates an effector population that clears the antigen. Loss of stimulation eventually returns the host to a homeostatic state, with a heterogeneous memory T cell population that persists in the absence of antigen and is primed for rapid responses to a repeat antigen exposure. However, in chronic infections and cancers, continued antigen persistence impedes a successful adaptive immune response and the formation of a stereotypical memory population of T cells is compromised. With repeated antigen stimulation, responding T cells proceed down an altered path of differentiation that allows for antigen persistence, but much less is known regarding the heterogeneity of these cells and the extent to which they can become “memory-like,” with a capacity for self-renewal and recall responses that are characteristic of bona fide memory cells. This review focuses on the differentiation of CD4+ and CD8+ T cells in the context of chronic antigen stimulation, highlighting the central observations in both human and mouse studies regarding the differentiation of memory or “memory-like” T cells. The importance of both the cellular and molecular drivers of memory T cell development are emphasized to better understand the consequences of persisting antigen on T cell fates. Integrating what is known and is common across model systems and patients can instruct future studies aimed at further understanding T cell differentiation and development, with the goal of developing novel methods to direct T cells toward the generation of effective memory populations.
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Affiliation(s)
- Jennifer L Hope
- Tumor Microenvironment and Cancer Immunology Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, United States
| | - Christopher J Stairiker
- Tumor Microenvironment and Cancer Immunology Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, United States
| | - Eun-Ah Bae
- Tumor Microenvironment and Cancer Immunology Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, United States
| | - Dennis C Otero
- Tumor Microenvironment and Cancer Immunology Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, United States
| | - Linda M Bradley
- Tumor Microenvironment and Cancer Immunology Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, United States
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16
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Schaeuble K, Cannelle H, Favre S, Huang HY, Oberle SG, Speiser DE, Zehn D, Luther SA. Attenuation of chronic antiviral T-cell responses through constitutive COX2-dependent prostanoid synthesis by lymph node fibroblasts. PLoS Biol 2019; 17:e3000072. [PMID: 31306410 PMCID: PMC6657915 DOI: 10.1371/journal.pbio.3000072] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 07/25/2019] [Accepted: 06/27/2019] [Indexed: 12/21/2022] Open
Abstract
Lymphoid T-zone fibroblastic reticular cells (FRCs) actively promote T-cell trafficking, homeostasis, and expansion but can also attenuate excessive T-cell responses via inducible nitric oxide (NO) and constitutive prostanoid release. It remains unclear how these FRC-derived mediators dampen T-cell responses and whether this occurs in vivo. Here, we confirm that murine lymph node (LN) FRCs produce prostaglandin E2 (PGE2) in a cyclooxygenase-2 (COX2)-dependent and inflammation-independent fashion. We show that this COX2/PGE2 pathway is active during both strong and weak T-cell responses, in contrast to NO, which only comes into play during strong T-cell responses. During chronic infections in vivo, PGE2-receptor signaling in virus-specific cluster of differentiation (CD)8 cytotoxic T cells was shown by others to suppress T-cell survival and function. Using COX2flox/flox mice crossed to mice expressing Cre recombinase expression under control of the CC chemokine ligand (CCL19) promoter (CCL19cre), we now identify CCL19+ FRC as the critical source of this COX2-dependent suppressive factor, suggesting PGE2-expressing FRCs within lymphoid tissues are an interesting therapeutic target to improve T-cell–mediated pathogen control during chronic infection. Fibroblasts in secondary lymphoid organs can be active participants in adaptive immunity, often enhancing T-cell responses. This study shows how these fibroblasts dampen T-cell responses via the constitutive production of the COX2-dependent prostaglandin PGE2, including during persistent viral infection.
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Affiliation(s)
- Karin Schaeuble
- Center for Immunity and Infection Lausanne, Department of Biochemistry, University of Lausanne, Epalinges, Switzerland.,Department of Oncology, University of Lausanne and University Hospital, Epalinges, Switzerland
| | - Hélène Cannelle
- Center for Immunity and Infection Lausanne, Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Stéphanie Favre
- Center for Immunity and Infection Lausanne, Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Hsin-Ying Huang
- Center for Immunity and Infection Lausanne, Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Susanne G Oberle
- Swiss Vaccine Research Institute, Epalinges, Switzerland.,Division of Immunology and Allergy, Department of Medicine, Lausanne University Hospital, Lausanne, Switzerland
| | - Daniel E Speiser
- Department of Oncology, University of Lausanne and University Hospital, Epalinges, Switzerland
| | - Dietmar Zehn
- Swiss Vaccine Research Institute, Epalinges, Switzerland.,Division of Immunology and Allergy, Department of Medicine, Lausanne University Hospital, Lausanne, Switzerland.,Division of Animal Physiology and Immunology, School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany
| | - Sanjiv A Luther
- Center for Immunity and Infection Lausanne, Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
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17
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Alexandre YO, Mueller SN. Stromal cell networks coordinate immune response generation and maintenance. Immunol Rev 2019; 283:77-85. [PMID: 29664562 DOI: 10.1111/imr.12641] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Secondary lymphoid organs (SLO), including the spleen and lymph nodes (LN) are a meeting place for immune cells to initiate adaptive immune responses. Lymphocytes constantly circulate between SLO through the blood and lymph in search of their cognate antigen and are activated within the organized microarchitecture of SLO. Lymphoid stromal cells (LSC) of mesenchymal and endothelial origin construct and support the microarchitecture of SLO by defining distinct compartments and providing signals that can either promote or inhibit immune responses. Here, we discuss recent studies indicating that LSC, including fibroblastic reticular cells (FRC), contribute substantially to immune responses and may tune responses to secondary challenge.
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Affiliation(s)
- Yannick O Alexandre
- Department of Microbiology and Immunology, The University of Melbourne, The Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Scott N Mueller
- Department of Microbiology and Immunology, The University of Melbourne, The Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia.,The Australian Research Council Centre of Excellence in Advanced Molecular Imaging, The University of Melbourne, Melbourne, VIC, Australia
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18
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Poultsidi A, Dimopoulos Y, He TF, Chavakis T, Saloustros E, Lee PP, Petrovas C. Lymph Node Cellular Dynamics in Cancer and HIV: What Can We Learn for the Follicular CD4 (Tfh) Cells? Front Immunol 2018; 9:2233. [PMID: 30319664 PMCID: PMC6170630 DOI: 10.3389/fimmu.2018.02233] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 09/07/2018] [Indexed: 12/17/2022] Open
Abstract
Lymph nodes (LNs) are central in the generation of adaptive immune responses. Follicular helper CD4 T (Tfh) cells, a highly differentiated CD4 population, provide critical help for the development of antigen-specific B cell responses within the germinal center. Throughout the past decade, numerous studies have revealed the important role of Tfh cells in Human Immunodeficiency Virus (HIV) pathogenesis as well as in the development of neutralizing antibodies post-infection and post-vaccination. It has also been established that tumors influence various immune cell subsets not only in their proximity, but also in draining lymph nodes. The role of local or tumor associated lymph node Tfh cells in disease progression is emerging. Comparative studies of Tfh cells in chronic infections and cancer could therefore provide novel information with regards to their differentiation plasticity and to the mechanisms regulating their development.
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Affiliation(s)
- Antigoni Poultsidi
- Department of Surgery, Medical School, University of Thessaly, Larissa, Greece
| | - Yiannis Dimopoulos
- Tissue Analysis Core, Immunology Laboratory, Vaccine Research Center, NIAID, NIH, Bethesda, MD, United States
| | - Ting-Fang He
- Department of Immuno-Oncology, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA, United States
| | - Triantafyllos Chavakis
- Institute of Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany
| | - Emmanouil Saloustros
- Department of Internal Medicine, Medical School, University of Thessaly, Larissa, Greece
| | - Peter P Lee
- Department of Immuno-Oncology, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA, United States
| | - Constantinos Petrovas
- Tissue Analysis Core, Immunology Laboratory, Vaccine Research Center, NIAID, NIH, Bethesda, MD, United States
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19
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Liu L, Zhao L, Yang Y, Gao J, Hu C, Guo B, Zhu B. Cytotoxic chemotherapy reduces T cell trafficking to the spleen by downregulating the expression of C-C motif chemokine ligand 21 and C-C motif chemokine ligand 19. Oncol Lett 2018; 16:5013-5019. [PMID: 30250567 PMCID: PMC6144923 DOI: 10.3892/ol.2018.9287] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 02/13/2018] [Indexed: 01/29/2023] Open
Abstract
T cells serve an important role in the destruction of tumor cells and clearing of foreign pathogens. Previous studies have suggested that the T cell immune response of tumor-bearing patients is significantly lower than that of healthy people, and the principal reason for this is lymphocytopenia, which is caused by repeated cycles of chemotherapy. In addition to lymphocytopenia, the present study revealed that cytotoxic chemotherapy also weakens the homing ability of T cells to the T-cell zone of the spleen, which decreases the possibility of encounters between antigen-specific T cells and dendritic cells presenting the appropriate antigen, thereby weakening the immune response of T cells. These changes are attributed to the lower expression of C-C motif chemokine ligand 21 (CCL21) and C-C motif chemokine ligand 19 (CCL19) in the spleen of secondary lymphoid organs (SLOs). Finally, the present study identified that chemotherapy affects the function and survival of fibroblastic reticular cells in SLOs, which are the main source of CCL21 and CCL19. These observations aid us in further understanding the mechanism that is responsible for the decreased T cell immune response following repeated cycles of chemotherapy.
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Affiliation(s)
- Lina Liu
- Institute of Oncology, Third Inpatient Building of Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Lintao Zhao
- Institute of Oncology, Third Inpatient Building of Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China.,Institute of Oncology, People's Liberation Army No. 324 Hospital, Chongqing 400037, P.R. China
| | - Yang Yang
- Institute of Oncology, Third Inpatient Building of Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Jianbao Gao
- Institute of Oncology, Third Inpatient Building of Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Chunyan Hu
- Institute of Oncology, Third Inpatient Building of Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
| | - Bo Guo
- Department of Microbiology, Third Military Medical University, Chongqing 400037, P.R. China
| | - Bo Zhu
- Institute of Oncology, Third Inpatient Building of Xinqiao Hospital, Third Military Medical University, Chongqing 400037, P.R. China
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20
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Pasztoi M, Pezoldt J, Beckstette M, Lipps C, Wirth D, Rohde M, Paloczi K, Buzas EI, Huehn J. Mesenteric lymph node stromal cell-derived extracellular vesicles contribute to peripheral de novo induction of Foxp3 + regulatory T cells. Eur J Immunol 2017; 47:2142-2152. [PMID: 28833065 PMCID: PMC5724490 DOI: 10.1002/eji.201746960] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 07/12/2017] [Accepted: 08/16/2017] [Indexed: 12/28/2022]
Abstract
Intestinal regulatory T cells (Tregs) are fundamental in peripheral tolerance toward commensals and food‐borne antigens. Accordingly, gut‐draining mesenteric lymph nodes (mLNs) represent a site of efficient peripheral de novo Treg induction when compared to skin‐draining peripheral LNs (pLNs), and we had recently shown that LN stromal cells substantially contribute to this process. Here, we aimed to unravel the underlying molecular mechanisms and generated immortalized fibroblastic reticular cell lines (iFRCs) from mLNs and pLNs, allowing unlimited investigation of this rare stromal cell subset. In line with our previous findings, mLN‐iFRCs showed a higher Treg‐inducing capacity when compared to pLN‐iFRCs. RNA‐seq analysis focusing on secreted molecules revealed a more tolerogenic phenotype of mLN‐ as compared to pLN‐iFRCs. Remarkably, mLN‐iFRCs produced substantial numbers of microvesicles (MVs) that carried elevated levels of TGF‐β when compared to pLN‐iFRC‐derived MVs, and these novel players of intercellular communication were shown to be responsible for the tolerogenic properties of mLN‐iFRCs. Thus, stromal cells originating from mLNs contribute to peripheral tolerance by fostering de novo Treg induction using TGF‐β‐carrying MVs. This finding provides novel insights into the subcellular/molecular mechanisms of de novo Treg induction and might serve as promising tool for future therapeutic applications to treat inflammatory disorders.
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Affiliation(s)
- Maria Pasztoi
- Experimental Immunology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Joern Pezoldt
- Experimental Immunology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Michael Beckstette
- Experimental Immunology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Christoph Lipps
- Model Systems for Infection and Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Dagmar Wirth
- Model Systems for Infection and Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Manfred Rohde
- Central Facility for Microscopy, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Krisztina Paloczi
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Edit Iren Buzas
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Jochen Huehn
- Experimental Immunology, Helmholtz Centre for Infection Research, Braunschweig, Germany
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21
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RESPATIKA DATU, SAITO YASUYUKI, WASHIO KEN, KOMORI SATOMI, KOTANI TAKENORI, OKAZAWA HIDEKI, MURATA YOJI, MATOZAKI TAKASHI. Role of SIRPα in Homeostatic Regulation of T Cells and Fibroblastic Reticular Cells in the Spleen. THE KOBE JOURNAL OF MEDICAL SCIENCES 2017; 63:E22-E29. [PMID: 29434170 PMCID: PMC5824927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 02/07/2017] [Indexed: 06/08/2023]
Abstract
Signal regulatory protein α (SIRPα), is an immunoglobulin superfamily protein that is predominantly expressed in macrophages and dendritic cells (DCs), especially CD4+ conventional DCs (cDCs). In this study, we demonstrated that, in addition to the reduced number of CD4+ cDCs, the number of T cells was significantly decreased in the spleen of Sirpa-/- mice, in which full-length of SIRPα protein was systemically ablated. The size of the T cell zone was markedly reduced in the spleen of Sirpa-/- mice. In addition, Sirpa-/- mice revealed a marked reduction of CCL19, CCL21, and IL-7 expression, which are thought to be important for homeostasis of T cells in the spleen. Consistently, the abundance of fibroblastic reticular cells (FRCs), a subset of stromal cells in the T cell zone, was markedly reduced in the spleen of Sirpa-/- mice compared with Sirpaf/f mice. Moreover, we demonstrated that the mRNA expression of Lymphotoxin (LT) α, LTβ, and LIGHT was significantly reduced in the spleen of Sirpa-/- mice. These data thus suggest that SIRPα is essential for steady-state homeostasis of T cells and FRCs in the spleen.
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Affiliation(s)
- DATU RESPATIKA
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - YASUYUKI SAITO
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - KEN WASHIO
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
- Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan
| | - SATOMI KOMORI
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - TAKENORI KOTANI
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - HIDEKI OKAZAWA
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - YOJI MURATA
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - TAKASHI MATOZAKI
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
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Severino P, Palomino DT, Alvarenga H, Almeida CB, Pasqualim DC, Cury A, Salvalaggio PR, De Vasconcelos Macedo AL, Andrade MC, Aloia T, Bromberg S, Rizzo LV, Rocha FA, Marti LC. Human Lymph Node-Derived Fibroblastic and Double-Negative Reticular Cells Alter Their Chemokines and Cytokines Expression Profile Following Inflammatory Stimuli. Front Immunol 2017; 8:141. [PMID: 28261205 PMCID: PMC5307266 DOI: 10.3389/fimmu.2017.00141] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Accepted: 01/27/2017] [Indexed: 12/17/2022] Open
Abstract
Lymph node (LN) is a secondary lymphoid organ with highly organized and compartmentalized structure. LNs harbor B, T, and other cells among fibroblastic reticular cells (FRCs). FRCs are characterized by both podoplanin (PDPN/gp38) expression and by the lack of CD31 expression. FRCs are involved in several immune response processes but mechanisms underlying their function are still under investigation. Double-negative cells (DNCs), another cell population within LNs, are even less understood. They do not express PDPN or CD31, their localization within the LN is unknown, and their phenotype and function remain to be elucidated. This study evaluates the gene expression and cytokines and chemokines profile of human LN-derived FRCs and DNCs during homeostasis and following inflammatory stimuli. Cytokines and chemokines secreted by human FRCs and DNCs partially diverged from those identified in murine models that used similar stimulation. Cytokine and chemokine secretion and their receptors expression levels differed between stimulated DNCs and FRCs, with FRCs expressing a broader range of chemokines. Additionally, dendritic cells demonstrated increased migration toward FRCs, possibly due to chemokine-induced chemotaxis since migration was significantly decreased upon neutralization of secreted CCL2 and CCL20. Our study contributes to the understanding of the biology and functions of FRCs and DNCs and, accordingly, of the mechanisms involving them in immune cells activation and migration.
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Affiliation(s)
- Patricia Severino
- Albert Einstein Research and Education Institute, Hospital Israelita Albert Einstein , São Paulo , Brazil
| | - Diana Torres Palomino
- Albert Einstein Research and Education Institute, Hospital Israelita Albert Einstein, São Paulo, Brazil; Programa de Alergia e Imunopatologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - Heliene Alvarenga
- Albert Einstein Research and Education Institute, Hospital Israelita Albert Einstein, São Paulo, Brazil; Programa de Alergia e Imunopatologia, Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, Brazil
| | - Camila Bononi Almeida
- Albert Einstein Research and Education Institute, Hospital Israelita Albert Einstein , São Paulo , Brazil
| | | | - Adriano Cury
- Hospital Israelita Albert Einstein, São Paulo, Brazil; Endocrinology Department, Santa Casa de Misericórdia de Sao Paulo, São Paulo, Brazil
| | - Paolo Rogério Salvalaggio
- Albert Einstein Research and Education Institute, Hospital Israelita Albert Einstein, São Paulo, Brazil; Hospital Israelita Albert Einstein, São Paulo, Brazil
| | | | - Maria Claudina Andrade
- Albert Einstein Research and Education Institute, Hospital Israelita Albert Einstein , São Paulo , Brazil
| | - Thiago Aloia
- Albert Einstein Research and Education Institute, Hospital Israelita Albert Einstein , São Paulo , Brazil
| | | | - Luiz Vicente Rizzo
- Albert Einstein Research and Education Institute, Hospital Israelita Albert Einstein , São Paulo , Brazil
| | - Fernanda Agostini Rocha
- Albert Einstein Research and Education Institute, Hospital Israelita Albert Einstein , São Paulo , Brazil
| | - Luciana C Marti
- Albert Einstein Research and Education Institute, Hospital Israelita Albert Einstein , São Paulo , Brazil
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Stroma Cells in Transplantation. Transplantation 2016; 101:221-223. [PMID: 27984518 DOI: 10.1097/tp.0000000000001604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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A Reproducible Method for Isolation and In Vitro Culture of Functional Human Lymphoid Stromal Cells from Tonsils. PLoS One 2016; 11:e0167555. [PMID: 27907202 PMCID: PMC5132289 DOI: 10.1371/journal.pone.0167555] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 11/16/2016] [Indexed: 12/11/2022] Open
Abstract
The stromal compartment of secondary lymphoid organs is classicaly known for providing a mechanical scaffold for the complex interactions between hematopoietic cells during immune activation as well as for providing a niche which is favorable for survival of lymphocytes. In recent years, it became increasingly clear that these cells also play an active role during such a response. Currently, knowledge of the interactions between human lymphoid stroma and hematopoietic cells is still lacking and most insight is based on murine systems. Although methods to isolate stromal cells from tonsils have been reported, data on stability in culture, characterization, and functional properties are lacking. Here, we describe a reproducible and easy method for isolation and in vitro culture of functional human lymphoid stromal cells from palatine tonsils. The cells isolated express markers and characteristics of T cell zone fibroblastic reticular cells (FRCs) and react to inflammatory stimuli by upregulating inflammatory cytokines and chemokines as well as adhesion molecules, as previously described for mouse lymphoid stroma. Also, cultured tonsil stromal cells support survival of human innate lymphoid cells, showing that these stromal cells can function as bone fide FRCs, providing a favorable microenvironment for hematopoietic cells.
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25
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Barone F, Gardner DH, Nayar S, Steinthal N, Buckley CD, Luther SA. Stromal Fibroblasts in Tertiary Lymphoid Structures: A Novel Target in Chronic Inflammation. Front Immunol 2016; 7:477. [PMID: 27877173 PMCID: PMC5100680 DOI: 10.3389/fimmu.2016.00477] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 10/20/2016] [Indexed: 12/14/2022] Open
Abstract
Tertiary lymphoid structures (TLS) are organized aggregates of lymphocytes, myeloid, and stromal cells that provide ectopic hubs for acquired immune responses. TLS share phenotypical and functional features with secondary lymphoid organs (SLO); however, they require persistent inflammatory signals to arise and are often observed at target sites of autoimmune disease, chronic infection, cancer, and organ transplantation. Over the past 10 years, important progress has been made in our understanding of the role of stromal fibroblasts in SLO development, organization, and function. A complex and stereotyped series of events regulate fibroblast differentiation from embryonic life in SLOs to lymphoid organ architecture observed in adults. In contrast, TLS-associated fibroblasts differentiate from postnatal, locally activated mesenchyme, predominantly in settings of inflammation and persistent antigen presentation. Therefore, there are critical differences in the cellular and molecular requirements that regulate SLO versus TLS development that ultimately impact on stromal and hematopoietic cell function. These differences may contribute to the pathogenic nature of TLS in the context of chronic inflammation and malignant transformation and offer a window of opportunity for therapeutic interventions in TLS associated pathologies.
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Affiliation(s)
- Francesca Barone
- Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham , Birmingham , UK
| | - David H Gardner
- Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham , Birmingham , UK
| | - Saba Nayar
- Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham , Birmingham , UK
| | - Nathalie Steinthal
- Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham , Birmingham , UK
| | - Christopher D Buckley
- Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham , Birmingham , UK
| | - Sanjiv A Luther
- Department of Biochemistry, Center for Immunity and Infection, University of Lausanne , Lausanne , Switzerland
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26
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Nazari B, Rice LM, Stifano G, Barron AMS, Wang YM, Korndorf T, Lee J, Bhawan J, Lafyatis R, Browning JL. Altered Dermal Fibroblasts in Systemic Sclerosis Display Podoplanin and CD90. THE AMERICAN JOURNAL OF PATHOLOGY 2016; 186:2650-64. [PMID: 27565038 DOI: 10.1016/j.ajpath.2016.06.020] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 05/02/2016] [Accepted: 06/03/2016] [Indexed: 12/21/2022]
Abstract
Tissue injury triggers the activation and differentiation of multiple cell types to minimize damage and initiate repair processes. In systemic sclerosis, these repair processes appear to run unchecked, leading to aberrant remodeling and fibrosis of the skin and multiple internal organs, yet the fundamental pathological defect remains unknown. We describe herein a transition wherein the abundant CD34(+) dermal fibroblasts present in healthy human skin disappear in the skin of systemic sclerosis patients, and CD34(-), podoplanin(+), and CD90(+) fibroblasts appear. This transition is limited to the upper dermis in several inflammatory skin diseases, yet in systemic sclerosis, it can occur in all regions of the dermis. In vitro, primary dermal fibroblasts readily express podoplanin in response to the inflammatory stimuli tumor necrosis factor and IL-1β. Furthermore, we show that on acute skin injury in both human and murine settings, this transition occurs quickly, consistent with a response to inflammatory signaling. Transitioned fibroblasts partially resemble the cells that form the reticular networks in organized lymphoid tissues, potentially linking two areas of fibroblast research. These results allow for the visualization and quantification of a basic stage of fibroblast differentiation in inflammatory and fibrotic diseases in the skin.
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Affiliation(s)
- Banafsheh Nazari
- Section of Rheumatology, Boston University School of Medicine, Boston, Massachusetts
| | - Lisa M Rice
- Section of Rheumatology, Boston University School of Medicine, Boston, Massachusetts
| | - Giuseppina Stifano
- Section of Rheumatology, Boston University School of Medicine, Boston, Massachusetts
| | - Alexander M S Barron
- Section of Rheumatology, Boston University School of Medicine, Boston, Massachusetts; Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts
| | - Yu Mei Wang
- Section of Rheumatology, Boston University School of Medicine, Boston, Massachusetts
| | - Tess Korndorf
- Section of Rheumatology, Boston University School of Medicine, Boston, Massachusetts
| | - Jungeun Lee
- Department of Dermatology, Boston University School of Medicine, Boston, Massachusetts
| | - Jag Bhawan
- Department of Dermatology, Boston University School of Medicine, Boston, Massachusetts
| | - Robert Lafyatis
- Section of Rheumatology, Boston University School of Medicine, Boston, Massachusetts; Division of Rheumatology and Clinical Immunology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Jeffrey L Browning
- Section of Rheumatology, Boston University School of Medicine, Boston, Massachusetts; Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts.
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27
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Royer DJ, Conrady CD, Carr DJJ. Herpesvirus-Associated Lymphadenitis Distorts Fibroblastic Reticular Cell Microarchitecture and Attenuates CD8 T Cell Responses to Neurotropic Infection in Mice Lacking the STING-IFNα/β Defense Pathways. THE JOURNAL OF IMMUNOLOGY 2016; 197:2338-52. [PMID: 27511736 DOI: 10.4049/jimmunol.1600574] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 07/06/2016] [Indexed: 01/02/2023]
Abstract
Type I IFN (IFN-α/β)-driven immune responses to acute viral infection are critical to counter replication and prevent dissemination. However, the mechanisms underlying host resistance to HSV type 1 (HSV-1) are incompletely understood. In this study, we show that mice with deficiencies in IFN-α/β signaling or stimulator of IFN genes (STING) exhibit exacerbated neurovirulence and atypical lymphotropic dissemination of HSV-1 following ocular infection. Synergy between IFN-α/β signaling and efficacy of early adaptive immune responses to HSV-1 were dissected using bone marrow chimeras and adoptive cell transfer approaches to profile clonal expansion, effector function, and recruitment of HSV-specific CD8(+) T cells. Lymphotropic viral dissemination was commensurate with abrogated CD8(+) T cell responses and pathological alterations of fibroblastic reticular cell networks in the draining lymph nodes. Our results show that resistance to HSV-1 in the trigeminal ganglia during acute infection is conferred in part by STING and IFN-α/β signaling in both bone marrow-derived and -resident cells, which coalesce to support a robust HSV-1-specific CD8(+) T cell response.
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Affiliation(s)
- Derek J Royer
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104; and Department of Ophthalmology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104
| | - Christopher D Conrady
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104; and
| | - Daniel J J Carr
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104; and Department of Ophthalmology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104
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28
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Dubey LK, Lebon L, Mosconi I, Yang CY, Scandella E, Ludewig B, Luther SA, Harris NL. Lymphotoxin-Dependent B Cell-FRC Crosstalk Promotes De Novo Follicle Formation and Antibody Production following Intestinal Helminth Infection. Cell Rep 2016; 15:1527-1541. [PMID: 27160906 DOI: 10.1016/j.celrep.2016.04.023] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 02/02/2016] [Accepted: 04/01/2016] [Indexed: 10/21/2022] Open
Abstract
Secondary lymphoid tissues provide specialized niches for the initiation of adaptive immune responses and undergo a remarkable expansion in response to inflammatory stimuli. Although the formation of B cell follicles was previously thought to be restricted to the postnatal period, we observed that the draining mesenteric lymph nodes (mLN) of helminth-infected mice form an extensive number of new, centrally located, B cell follicles in response to IL-4Rα-dependent inflammation. IL-4Rα signaling promoted LTα1β2 (lymphotoxin) expression by B cells, which then interacted with CCL19 positive stromal cells to promote lymphoid enlargement and the formation of germinal center containing B cell follicles. Importantly, de novo follicle formation functioned to promote both total and parasite-specific antibody production. These data reveal a role for type 2 inflammation in promoting stromal cell remodeling and de novo follicle formation by promoting B cell-stromal cell crosstalk.
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Affiliation(s)
- Lalit Kumar Dubey
- Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), station 19, 1015 Lausanne, Switzerland
| | - Luc Lebon
- Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), station 19, 1015 Lausanne, Switzerland
| | - Ilaria Mosconi
- Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), station 19, 1015 Lausanne, Switzerland
| | - Chen-Ying Yang
- Department of Biochemistry, Center for Immunity and Infection Lausanne, University of Lausanne, 1066 Épalinges, Switzerland
| | - Elke Scandella
- Institute of Immunobiology, Kantonsspital St. Gallen, 9007 St. Gallen, Switzerland
| | - Burkhard Ludewig
- Institute of Immunobiology, Kantonsspital St. Gallen, 9007 St. Gallen, Switzerland
| | - Sanjiv A Luther
- Department of Biochemistry, Center for Immunity and Infection Lausanne, University of Lausanne, 1066 Épalinges, Switzerland
| | - Nicola L Harris
- Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), station 19, 1015 Lausanne, Switzerland.
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29
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Zhao L, Gao J, Li Y, Liu L, Yang Y, Guo B, Zhu B. Disrupted Homeostatic Cytokines Expression in Secondary Lymph Organs during HIV Infection. Int J Mol Sci 2016; 17:413. [PMID: 27011165 PMCID: PMC4813265 DOI: 10.3390/ijms17030413] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 02/05/2016] [Accepted: 03/14/2016] [Indexed: 12/13/2022] Open
Abstract
Research has firmly established that infection by human immunodeficiency virus (HIV) leads to structural disruption in secondary lymph organs (SLOs) and that IL-7 expression by SLOs is downregulated in simian immunodeficiency virus (SIV)-infected rhesus macaques. However, the foregoing has not been demonstrated in HIV-infected patients. As well, SLO-produced chemokines and cytokines, other than IL-7, have not been tested. In this study, SLOs in HIV-infected patients exhibit decreased levels of lymphoid cytokines, such as IL-7 and C–C motif chemokine ligand 21 (CCL21), due to lower expression of lymphotoxin (LT)-β. Previous research has shown that LT-β is produced mainly by CD4+T cells in rhesus macaques, while our study found the same level of LT-β expressed by CD4+T and CD8+T cells in humans. CD8+T cells substitute for depleted CD4+T cells LT-β production. Only the total number of CD3+T cells can account for the majority of LT-β in human SLOs. This study indicates a possible mechanism and a potential target for improvement of SLO function in HIV-infected patients, a novel adjuvant therapy for AIDS.
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Affiliation(s)
- Lintao Zhao
- Department of Oncology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Jianbao Gao
- Department of Oncology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Yan Li
- Department of Nephrology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Lina Liu
- Department of Oncology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Yang Yang
- Department of Oncology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Bo Guo
- Department of Pathogenic Biology, Third Military Medical University, Chongqing 400037, China.
| | - Bo Zhu
- Department of Oncology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
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Murine Fibroblastic Reticular Cells From Lymph Node Interact With CD4+ T Cells Through CD40-CD40L. Transplantation 2015; 99:1561-7. [PMID: 25856408 DOI: 10.1097/tp.0000000000000710] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Costimulatory blockade with anti-CD40L monoclonal antibody (mAb) plus donor-specific splenocyte transfusion (DST) induces alloantigen-specific tolerance. We previously showed that lymphotoxin signaling in the fibroblastic reticular cell (FRC) stromal subset was required for proper lymph node structure and function during tolerization in murine cardiac transplantation. Here we focused on FRC functions and hypothesized that DST and anti-CD40L mAb-modulated FRC interactions with CD4(+) T cells in mice. METHODS Mice were immunized or tolerized by DST or DST plus anti-CD40L mAb. Fibroblastic reticular cells were flow-sorted at different timepoints for characterization and in vitro proliferation and activation assays. RESULTS Fibroblastic reticular cells responded rapidly to DST by transcribing inflammatory cytokine and chemokine messenger RNAs, such as CXCL2, CXCL9, CXCL10, and CCL21. Conversely, anti-CD40L mAb inhibited FRC inflammatory responses. CD40 was expressed on FRC and agonistic anti-CD40 mAb activated FRC, which supported CD4(+) T-cell proliferation, whereas unstimulated FRC did not. Anti-CD3 mAb-activated CD4(+) T cells induced inflammatory cytokine and chemokine expressions by FRC, which were inhibited by anti-CD40L mAb. Thus, FRC phenotype was altered by interaction with CD4(+) T cells through CD40-CD40L, and activated FRC interacted directly with CD4(+) T cells to support T cell activation and proliferation in vitro. CONCLUSIONS Taken together, these results demonstrated that CD40 on FRC facilitated bidirectional communication between FRC and CD4(+) T cells via CD40-CD40L, thereby altering FRC gene expression of immune regulatory molecules. Because blockade of CD40-CD40L interactions results in tolerance in mice, identification of FRC-T cell interactions provides a new research target for tolerance induction.
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31
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Hirosue S, Dubrot J. Modes of Antigen Presentation by Lymph Node Stromal Cells and Their Immunological Implications. Front Immunol 2015; 6:446. [PMID: 26441957 PMCID: PMC4561840 DOI: 10.3389/fimmu.2015.00446] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 08/17/2015] [Indexed: 12/15/2022] Open
Abstract
Antigen presentation is no longer the exclusive domain of cells of hematopoietic origin. Recent works have demonstrated that lymph node stromal cell (LNSC) populations, such as fibroblastic reticular cells, lymphatic and blood endothelial cells, not only provide a scaffold for lymphocyte interactions but also exhibit active immunomodulatory roles that are critical to mounting and resolving effective immune responses. Importantly, LNSCs possess the ability to present antigens and establish antigen-specific interactions with T cells. One example is the expression of peripheral tissue antigens, which are presented on major histocompatibility complex (MHC)-I molecules with tolerogenic consequences on T cells. Additionally, exogenous antigens, including self and tumor antigens, can be processed and presented on MHC-I complexes, which result in dysfunctional activation of antigen-specific CD8+ T cells. While MHC-I is widely expressed on cells of both hematopoietic and non-hematopoietic origins, antigen presentation via MHC-II is more precisely regulated. Nevertheless, LNSCs are capable of endogenously expressing, or alternatively, acquiring MHC-II molecules. Transfer of antigen between LNSC and dendritic cells in both directions has been recently suggested to promote tolerogenic roles of LNSCs on the CD4+ T cell compartment. Thus, antigen presentation by LNSCs is thought to be a mechanism that promotes the maintenance of peripheral tolerance as well as generates a pool of diverse antigen-experienced T cells for protective immunity. This review aims to integrate the current and emerging literature to highlight the importance of LNSCs in immune responses, and emphasize their role in antigen trafficking, retention, and presentation.
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Affiliation(s)
- Sachiko Hirosue
- Institute of Bioengineering, École Polytechnique Fédéral de Lausanne , Lausanne , Switzerland
| | - Juan Dubrot
- Department of Pathology and Immunology, Université de Genève , Geneva , Switzerland
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Zhao L, Chen J, Liu L, Gao J, Guo B, Zhu B. Essential role of TNF-alpha in development of spleen fibroblastic reticular cells. Cell Immunol 2015; 293:130-6. [PMID: 25618740 DOI: 10.1016/j.cellimm.2015.01.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 01/09/2015] [Accepted: 01/10/2015] [Indexed: 01/05/2023]
Abstract
TNF-alpha plays an important role in the development of secondary lymphoid tissues. Earlier studies showed that fibroblastic reticular cells express TNF-alpha receptor, suggesting that TNF-alpha may affect the development of FRCs. To test this, we analyzed the development and function of FRCs in wild-type or TNF-alpha knockout mice. We found that GP38 expression was down-regulated in the spleen of TNF-alpha knockout mice. Chemokines, mainly secreted by GP38(+) FRCs, were also down-regulated. Additionally, we found that absence of TNF-alpha decreased the homing ability to direct T cells to the spleen. However, absence of TNF-alpha did not affect the development of lymph nodes FRCs. These data reveal that TNF-alpha plays an important role in the development of spleen FRCs. Absence of TNF-alpha could cause abnormality of spleen FRCs, thereby weakening the homing ability of T cells to localize to the spleen T cell zone.
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Affiliation(s)
- Lintao Zhao
- Institution of Oncology, Xinqiao Hospital, Third Military Medical University, Chongqing, China.
| | - Junying Chen
- Institution of Oncology, Xinqiao Hospital, Third Military Medical University, Chongqing, China.
| | - Lina Liu
- Institution of Oncology, Xinqiao Hospital, Third Military Medical University, Chongqing, China.
| | - Jianbao Gao
- Institution of Oncology, Xinqiao Hospital, Third Military Medical University, Chongqing, China.
| | - Bo Guo
- Institution of Oncology, Xinqiao Hospital, Third Military Medical University, Chongqing, China; Department of Immunology, Third Military Medical University, Chongqing, China.
| | - Bo Zhu
- Institution of Oncology, Xinqiao Hospital, Third Military Medical University, Chongqing, China.
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Zhao L, Liu L, Gao J, Yang Y, Hu C, Guo B, Zhu B. T lymphocytes maintain structure and function of fibroblastic reticular cells via lymphotoxin (LT)-B. BMC Immunol 2014; 15:33. [PMID: 25266629 PMCID: PMC4190486 DOI: 10.1186/s12865-014-0033-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 08/13/2014] [Indexed: 11/10/2022] Open
Abstract
Background Although a lot is known about how Fibroblastic Reticular Cells (FRCs) can regulate T lymphocytes (T cells), little is understood about whether or how T cells can regulate FRCs. Results This study shows that the absence of T cells inhibited the secretion of ER-TR7 by splenic FRCs, induced the structural disorder of FRCs, down-regulated the expression of the chemokine ligands CCL21 and CCL19, and weakened the homing ability of T cells to the spleen of nude mice. Transfusion of T cells from BALB/c mice restored the structure and functions of FRCs and recovered them. The expression of lymphotoxin (LT)-B was significantly downregulated in the absence of T cells from nude mice and was recovered after the transfusion of T cells. After the occlusion of the LT-B receptor, the FRCs’ structure and functions were not restored by transfusion of T cells. Conclusions These data reveal that the absence of T cells will subject spleen FRCs to structural and functional abnormality, and weaken the homing ability of T cells to the spleen. These changes are attributed to the T-cell- derived LT-B.
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Affiliation(s)
| | | | | | | | | | - Bo Guo
- Institution of Cancer, Xinqiao Hospital, Third Military Mediecal University, Chongqing 400037, China.
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Abe J, Shichino S, Ueha S, Hashimoto SI, Tomura M, Inagaki Y, Stein JV, Matsushima K. Lymph node stromal cells negatively regulate antigen-specific CD4+ T cell responses. THE JOURNAL OF IMMUNOLOGY 2014; 193:1636-44. [PMID: 25024385 DOI: 10.4049/jimmunol.1302946] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Lymph node (LN) stromal cells (LNSCs) form the functional structure of LNs and play an important role in lymphocyte survival and the maintenance of immune tolerance. Despite their broad spectrum of function, little is known about LNSC responses during microbial infection. In this study, we demonstrate that LNSC subsets display distinct kinetics following vaccinia virus infection. In particular, compared with the expansion of other LNSC subsets and the total LN cell population, the expansion of fibroblastic reticular cells (FRCs) was delayed and sustained by noncirculating progenitor cells. Notably, newly generated FRCs were preferentially located in perivascular areas. Viral clearance in reactive LNs preceded the onset of FRC expansion, raising the possibility that viral infection in LNs may have a negative impact on the differentiation of FRCs. We also found that MHC class II expression was upregulated in all LNSC subsets until day 10 postinfection. Genetic ablation of radioresistant stromal cell-mediated Ag presentation resulted in slower contraction of Ag-specific CD4(+) T cells. We propose that activated LNSCs acquire enhanced Ag-presentation capacity, serving as an extrinsic brake system for CD4(+) T cell responses. Disrupted function and homeostasis of LNSCs may contribute to immune deregulation in the context of chronic viral infection, autoimmunity, and graft-versus-host disease.
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Affiliation(s)
- Jun Abe
- Department of Molecular Preventive Medicine, Graduate School of Medicine, University of Tokyo, Tokyo 113-0033, Japan; Japan Science and Technology Agency, Tokyo 102-8666, Japan; Theodor Kocher Institute, University of Bern, CH-3012 Bern, Switzerland
| | - Shigeyuki Shichino
- Department of Molecular Preventive Medicine, Graduate School of Medicine, University of Tokyo, Tokyo 113-0033, Japan; Japan Science and Technology Agency, Tokyo 102-8666, Japan
| | - Satoshi Ueha
- Department of Molecular Preventive Medicine, Graduate School of Medicine, University of Tokyo, Tokyo 113-0033, Japan; Japan Science and Technology Agency, Tokyo 102-8666, Japan
| | - Shin-ichi Hashimoto
- Department of Molecular Preventive Medicine, Graduate School of Medicine, University of Tokyo, Tokyo 113-0033, Japan; Japan Science and Technology Agency, Tokyo 102-8666, Japan; Division of Nephrology, Department of Laboratory Medicine, Kanazawa University, Ishikawa 920-1192, Japan
| | - Michio Tomura
- Center for Innovation in Immunoregulative Technology and Therapeutics, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan; and
| | - Yutaka Inagaki
- Japan Science and Technology Agency, Tokyo 102-8666, Japan; Center for Matrix Biology and Medicine, Graduate School of Medicine, Institute of Medical Sciences, Tokai University, Kanagawa 259-1143, Japan
| | - Jens V Stein
- Theodor Kocher Institute, University of Bern, CH-3012 Bern, Switzerland
| | - Kouji Matsushima
- Department of Molecular Preventive Medicine, Graduate School of Medicine, University of Tokyo, Tokyo 113-0033, Japan; Japan Science and Technology Agency, Tokyo 102-8666, Japan;
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Multifunctional roles of reticular fibroblastic cells: more than meets the eye? J Immunol Res 2014; 2014:402038. [PMID: 24829927 PMCID: PMC4009236 DOI: 10.1155/2014/402038] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 03/25/2014] [Accepted: 03/25/2014] [Indexed: 01/28/2023] Open
Abstract
Fibroblastic reticular cells (FRCs) are stromal cells found in secondary lymphoid organ. Despite its structural function in the lymph nodes being well established, recent studies indicate that the FRCs also play a key role in immunological processes, associated with cell transit, immune response, and cells activation quality, and contribute to peripheral tolerance. To this end, we focus this review on lymph nodes FRC characterization and discuss functional aspects such as production of cytokines and chemokines and their involvement in the immune response, seeking to establish whether certain subsets have a more functional specialization.
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Lu TT, Browning JL. Role of the Lymphotoxin/LIGHT System in the Development and Maintenance of Reticular Networks and Vasculature in Lymphoid Tissues. Front Immunol 2014; 5:47. [PMID: 24575096 PMCID: PMC3920476 DOI: 10.3389/fimmu.2014.00047] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 01/27/2014] [Indexed: 01/08/2023] Open
Abstract
Lymphoid organs are meeting zones where lymphocytes come together and encounter antigens present in the blood and lymph or as delivered by cells migrating from the draining tissue bed. The exquisite efficiency of this process relies heavily on highly specialized anatomy to direct and position the various players. Gated entry and exit control access to these theaters and reticular networks and associated chemokines guide cells into the proper sections. Lymphoid tissues are remarkably plastic, being able to expand dramatically and then involute upon resolution of the danger. All of the reticular scaffolds and vascular and lymphatic components adapt accordingly. As such, the lymph node (LN) is a wonderful example of a physiologic remodeling process and is potentially a guide to study such elements in pathological settings such as fibrosis, chronic infection, and tumor metastasis. The lymphotoxin/LIGHT axis delivers critical differentiation signals that direct and hone differentiation of both reticular networks and the vasculature. Considerable progress has been made recently in understanding the mesenchymal differentiation pathways leading to these specialized networks and in the remodeling that occurs in reactive LNs. In this article, we will review some new advances in the area in terms of developmental, differentiation, and maintenance events mediated by this axis.
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Affiliation(s)
- Theresa T Lu
- Autoimmunity and Inflammation Program and Pediatric Rheumatology, Hospital for Special Surgery , New York, NY , USA ; Department of Microbiology and Immunology, Weill Cornell Medical College , New York, NY , USA
| | - Jeffrey L Browning
- Department of Microbiology and Section of Rheumatology, Boston University School of Medicine , Boston, MA , USA
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Ng CT, Snell LM, Brooks DG, Oldstone MBA. Networking at the level of host immunity: immune cell interactions during persistent viral infections. Cell Host Microbe 2013; 13:652-64. [PMID: 23768490 DOI: 10.1016/j.chom.2013.05.014] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Persistent viral infections are the result of a series of connected events that culminate in diminished immunity and the inability to eliminate infection. By building our understanding of how distinct components of the immune system function both individually and collectively in productive versus abortive responses, new potential therapeutic targets can be developed to overcome immune dysfunction and thus fight persistent infections. Using lymphocytic choriomeningitis virus (LCMV) as a model of a persistent virus infection and drawing parallels to persistent human viral infections such as human immunodeficiency virus (HIV) and hepatitis C virus (HCV), we describe the cellular relationships and interactions that determine the outcome of initial infection and highlight immune targets for therapeutic intervention to prevent or treat persistent infections. Ultimately, these findings will further our understanding of the immunologic basis of persistent viral infection and likely lead to strategies to treat human viral infections.
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Affiliation(s)
- Cherie T Ng
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, CA 92037, USA
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Trapping of naive lymphocytes triggers rapid growth and remodeling of the fibroblast network in reactive murine lymph nodes. Proc Natl Acad Sci U S A 2013; 111:E109-18. [PMID: 24367096 DOI: 10.1073/pnas.1312585111] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Adaptive immunity is initiated in T-cell zones of secondary lymphoid organs. These zones are organized in a rigid 3D network of fibroblastic reticular cells (FRCs) that are a rich cytokine source. In response to lymph-borne antigens, draining lymph nodes (LNs) expand several folds in size, but the fate and role of the FRC network during immune response is not fully understood. Here we show that T-cell responses are accompanied by the rapid activation and growth of FRCs, leading to an expanded but similarly organized network of T-zone FRCs that maintains its vital function for lymphocyte trafficking and survival. In addition, new FRC-rich environments were observed in the expanded medullary cords. FRCs are activated within hours after the onset of inflammation in the periphery. Surprisingly, FRC expansion depends mainly on trapping of naïve lymphocytes that is induced by both migratory and resident dendritic cells. Inflammatory signals are not required as homeostatic T-cell proliferation was sufficient to trigger FRC expansion. Activated lymphocytes are also dispensable for this process, but can enhance the later growth phase. Thus, this study documents the surprising plasticity as well as the complex regulation of FRC networks allowing the rapid LN hyperplasia that is critical for mounting efficient adaptive immunity.
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Robert-Tissot C, Nguyen LT, Ohashi PS, Speiser DE. Mobilizing and evaluating anticancer T cells: pitfalls and solutions. Expert Rev Vaccines 2013; 12:1325-40. [PMID: 24127850 DOI: 10.1586/14760584.2013.843456] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Immunotherapy is a promising means to fight cancer, prompting a steady increase in clinical trials and correlative laboratory studies in this field. As antitumor T cells play central roles in immunity against malignant diseases, most immunotherapeutic protocols aim to induce and/or strengthen their function. Various treatment strategies have elicited encouraging clinical responses; however, major challenges have been uncovered that should be addressed in order to fully exploit the potential of immunotherapy. Here, we outline pitfalls for the mobilization of antitumor T cells and offer solutions to improve their therapeutic efficacy. We provide a critical perspective on the main methodologies used to characterize T-cell responses to cancer therapies, with a focus on discrepancies between T-cell attributes measured in vitro and protective responses in vivo. This review altogether provides recommendations to optimize the design of future clinical trials and highlights important considerations for the proficient analysis of clinical specimens available for research.
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Affiliation(s)
- Céline Robert-Tissot
- Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, M5G 2C1, Canada
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Abstract
PURPOSE OF REVIEW The mechanisms of tolerance induction and maintenance remain incompletely understood and have yet to be translated to clinical practice. Advances in imaging techniques have allowed precise examination of cell interactions in the lymph node, often in real time. Herein we review evidence that lymph node structure is dynamic and controls the character of the immune response in a multistep, multiplayer dance. T-cell responses in particular can be initiated or influenced in regions beyond the canonical T-cell zone. We propose that the cortical ridge is one such region required for induction and maintenance of tolerance. RECENT FINDINGS Lymph node domains are more complex than T-cell and B-cell zones. Different domains are important for different types of immune responses. These domains are in part defined by dynamic, malleable physical structures that guide cell interactions and influence immune outcomes. SUMMARY Further probing as to how lymph node stromal cells and fibers interact with and determine the character of immune responses should yield fundamental insights into tolerance and immunity. Manipulation of lymph node structure and associated unique cell types and molecules may allow therapeutic interventions in the tolerogenic process.
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Tilburgs T, Strominger JL. CD8+ effector T cells at the fetal-maternal interface, balancing fetal tolerance and antiviral immunity. Am J Reprod Immunol 2013; 69:395-407. [PMID: 23432707 DOI: 10.1111/aji.12094] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Accepted: 01/16/2013] [Indexed: 12/20/2022] Open
Abstract
During pregnancy CD8+ effector T cells need optimal immune regulation to prevent a detrimental response to allogeneic fetal cells while providing immune protection to infections. A significant proportion of (prospective) mothers carry naïve or memory CD8+ T cells with a TCR that can directly bind to paternal MHC molecules. In addition, a high percentage of pregnant women develop specific T cell responses to fetal minor histocompatibility antigens (mHags). Under normal conditions, fetal-maternal MHC and mHag mismatches lead to elevated lymphocyte activation but do not induce pregnancy failure. Furthermore, viral infections alter the maternal CD8+ T cell response by changing the CD8+ T cell repertoire and increasing the influx of CD8+ T cells to decidual tissue. The normally high T cell activation threshold at the fetal-maternal interface may prevent efficient clearance of viral infections. Conversely, the increased inflammatory response due to viral infections may break fetal-maternal tolerance and lead to pregnancy complications. The aim of this review is to discuss the recent studies of CD8+ T cells in pregnancy, identify potential mechanisms for antigen-specific immune recognition of fetal extravillous trophoblast (EVT) cells by CD8+ T cells, and discuss the impact of viral infections and virus-specific CD8+ T cells during pregnancy.
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Affiliation(s)
- Tamara Tilburgs
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, USA.
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