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Massoni-Badosa R, Aguilar-Fernández S, Nieto JC, Soler-Vila P, Elosua-Bayes M, Marchese D, Kulis M, Vilas-Zornoza A, Bühler MM, Rashmi S, Alsinet C, Caratù G, Moutinho C, Ruiz S, Lorden P, Lunazzi G, Colomer D, Frigola G, Blevins W, Romero-Rivero L, Jiménez-Martínez V, Vidal A, Mateos-Jaimez J, Maiques-Diaz A, Ovejero S, Moreaux J, Palomino S, Gomez-Cabrero D, Agirre X, Weniger MA, King HW, Garner LC, Marini F, Cervera-Paz FJ, Baptista PM, Vilaseca I, Rosales C, Ruiz-Gaspà S, Talks B, Sidhpura K, Pascual-Reguant A, Hauser AE, Haniffa M, Prosper F, Küppers R, Gut IG, Campo E, Martin-Subero JI, Heyn H. An atlas of cells in the human tonsil. Immunity 2024; 57:379-399.e18. [PMID: 38301653 PMCID: PMC10869140 DOI: 10.1016/j.immuni.2024.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/07/2023] [Accepted: 01/09/2024] [Indexed: 02/03/2024]
Abstract
Palatine tonsils are secondary lymphoid organs (SLOs) representing the first line of immunological defense against inhaled or ingested pathogens. We generated an atlas of the human tonsil composed of >556,000 cells profiled across five different data modalities, including single-cell transcriptome, epigenome, proteome, and immune repertoire sequencing, as well as spatial transcriptomics. This census identified 121 cell types and states, defined developmental trajectories, and enabled an understanding of the functional units of the tonsil. Exemplarily, we stratified myeloid slan-like subtypes, established a BCL6 enhancer as locally active in follicle-associated T and B cells, and identified SIX5 as putative transcriptional regulator of plasma cell maturation. Analyses of a validation cohort confirmed the presence, annotation, and markers of tonsillar cell types and provided evidence of age-related compositional shifts. We demonstrate the value of this resource by annotating cells from B cell-derived mantle cell lymphomas, linking transcriptional heterogeneity to normal B cell differentiation states of the human tonsil.
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Affiliation(s)
| | | | - Juan C Nieto
- Centro Nacional de Análisis Genómico (CNAG), Barcelona, Spain
| | - Paula Soler-Vila
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | | | | | - Marta Kulis
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Amaia Vilas-Zornoza
- Hemato-Oncology Program, Center for Applied Medical Research (CIMA), University of Navarra, IDISNA, Universidad de Navarra, Pamplona, Spain; Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain
| | - Marco Matteo Bühler
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland; Hematopathology Section, Pathology Department, Hospital Clinic, Barcelona, Spain
| | - Sonal Rashmi
- Centro Nacional de Análisis Genómico (CNAG), Barcelona, Spain
| | - Clara Alsinet
- Centro Nacional de Análisis Genómico (CNAG), Barcelona, Spain
| | - Ginevra Caratù
- Centro Nacional de Análisis Genómico (CNAG), Barcelona, Spain
| | - Catia Moutinho
- Centro Nacional de Análisis Genómico (CNAG), Barcelona, Spain
| | - Sara Ruiz
- Centro Nacional de Análisis Genómico (CNAG), Barcelona, Spain
| | - Patricia Lorden
- Centro Nacional de Análisis Genómico (CNAG), Barcelona, Spain
| | - Giulia Lunazzi
- Centro Nacional de Análisis Genómico (CNAG), Barcelona, Spain
| | - Dolors Colomer
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain; Hematopathology Section, Pathology Department, Hospital Clinic, Barcelona, Spain; Departament de Fonaments Clínics, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain
| | - Gerard Frigola
- Hematopathology Section, Pathology Department, Hospital Clinic, Barcelona, Spain
| | - Will Blevins
- Centro Nacional de Análisis Genómico (CNAG), Barcelona, Spain
| | - Lucia Romero-Rivero
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | | | - Anna Vidal
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Judith Mateos-Jaimez
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Alba Maiques-Diaz
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Sara Ovejero
- Department of Biological Hematology, CHU Montpellier, Montpellier, France; Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France
| | - Jérôme Moreaux
- Department of Biological Hematology, CHU Montpellier, Montpellier, France; Institute of Human Genetics, UMR 9002 CNRS-UM, Montpellier, France; Department of Clinical Hematology, CHU Montpellier, Montpellier, France
| | - Sara Palomino
- Translational Bioinformatics Unit (TransBio), Navarrabiomed, Navarra Health Department (CHN), Public University of Navarra (UPNA), Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
| | - David Gomez-Cabrero
- Translational Bioinformatics Unit (TransBio), Navarrabiomed, Navarra Health Department (CHN), Public University of Navarra (UPNA), Navarra Institute for Health Research (IdiSNA), Pamplona, Spain; Bioscience Program, Biological and Environmental Sciences and Engineering Division (BESE), King Abdullah University of Science and Technology KAUST, Thuwal, Saudi Arabia
| | - Xabier Agirre
- Hemato-Oncology Program, Center for Applied Medical Research (CIMA), University of Navarra, IDISNA, Universidad de Navarra, Pamplona, Spain; Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain
| | - Marc A Weniger
- Institute of Cell Biology (Cancer Research), Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - Hamish W King
- Epigenetics and Development Division, Walter and Eliza Hall Institute, Parkville, Australia
| | - Lucy C Garner
- Translational Gastroenterology Unit, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Federico Marini
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany; Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | | | - Peter M Baptista
- Department of Otorhinolaryngology, University of Navarra, Pamplona, Spain
| | - Isabel Vilaseca
- Otorhinolaryngology Head-Neck Surgery Department, Hospital Clínic, IDIBAPS Universitat de Barcelona, Barcelona, Spain
| | - Cecilia Rosales
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Silvia Ruiz-Gaspà
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Benjamin Talks
- Biosciences Institute, Newcastle University, Newcastle Upon Tyne, UK; Department of Otolaryngology, Freeman Hospital, Newcastle Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - Keval Sidhpura
- Biosciences Institute, Newcastle University, Newcastle Upon Tyne, UK
| | - Anna Pascual-Reguant
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany; Immune Dynamics, Deutsches Rheuma-Forschungszentrum (DRFZ), Berlin, Germany
| | - Anja E Hauser
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany; Immune Dynamics, Deutsches Rheuma-Forschungszentrum (DRFZ), Berlin, Germany
| | - Muzlifah Haniffa
- Biosciences Institute, Newcastle University, Newcastle Upon Tyne, UK; Wellcome Sanger Institute, Wellcome Genome Campus, Cambridge, UK; Department of Dermatology and NIHR Newcastle Biomedical Research Centre, Newcastle Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - Felipe Prosper
- Hemato-Oncology Program, Center for Applied Medical Research (CIMA), University of Navarra, IDISNA, Universidad de Navarra, Pamplona, Spain; Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain; Departamento de Hematología, Clínica Universidad de Navarra, University of Navarra, Pamplona, Spain
| | - Ralf Küppers
- Institute of Cell Biology (Cancer Research), Medical Faculty, University of Duisburg-Essen, Essen, Germany
| | - Ivo Glynne Gut
- Centro Nacional de Análisis Genómico (CNAG), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Elias Campo
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Centro de Investigación Biomédica en Red Cáncer (CIBERONC), Madrid, Spain; Hematopathology Section, Pathology Department, Hospital Clinic, Barcelona, Spain; Departament de Fonaments Clínics, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain
| | - José Ignacio Martin-Subero
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Departament de Fonaments Clínics, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain.
| | - Holger Heyn
- Centro Nacional de Análisis Genómico (CNAG), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain.
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Miao J, Lan T, Guo H, Wang J, Zhang G, Wang Z, Yang P, Li H, Zhang C, Wang Y, Li X, Miao M. Characterization of SHARPIN knockout Syrian hamsters developed using CRISPR/Cas9 system. Animal Model Exp Med 2023; 6:489-498. [PMID: 36097701 PMCID: PMC10614123 DOI: 10.1002/ame2.12265] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/24/2022] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND SHARPIN (SHANK-associated RH domain interactor) is a component of the linear ubiquitination complex that regulates the NF-κB signaling pathway. To better understand the function of SHARPIN, we sought to establish a novel genetically engineered Syrian hamster with SHARPIN disruption using the CRISPR/Cas9 system. METHODS A single-guide ribonucleic acid targeting exon 1 of SHARPIN gene was designed and constructed. The zygotes generated by cytoplasmic injection of the Cas9/gRNA ribonucleoprotein were transferred into pseudopregnant hamsters. Neonatal mutants were identified by genotyping. SHARPIN protein expression was detected using Western blotting assay. Splenic, mesenteric lymph nodes (MLNs), and thymic weights were measured, and organ coefficients were calculated. Histopathological examination of the spleen, liver, lung, small intestine, and esophagus was performed independently by a pathologist. The expression of lymphocytic markers and cytokines was evaluated using reverse transcriptase-quantitative polymerase chain reaction. RESULTS All the offspring harbored germline-transmitted SHARPIN mutations. Compared with wild-type hamsters, SHARPIN protein was undetectable in SHARPIN-/- hamsters. Spleen enlargement and splenic coefficient elevation were spotted in SHARPIN-/- hamsters, with the descent of MLNs and thymuses. Further, eosinophil infiltration and structural alteration in spleens, livers, lungs, small intestines, and esophagi were obvious after the deletion of SHARPIN. Notably, the expression of CD94 and CD22 was downregulated in the spleens of knockout (KO) animals. Nonetheless, the expression of CCR3, CCL11, Il4, and Il13 was upregulated in the esophagi. The expression of NF-κB and phosphorylation of NF-κB and IκB protein significantly diminished in SHARPIN-/- animals. CONCLUSIONS A novel SHARPIN KO hamster was successfully established using the CRISPR/Cas9 system. Abnormal development of secondary lymphoid organs and eosinophil infiltration in multiple organs reveal its potential in delineating SHARPIN function and chronic inflammation.
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Affiliation(s)
- Jinxin Miao
- Academy of Chinese Medicine ScienceHenan University of Chinese MedicineZhengzhouHenanPeople's Republic of China
| | - Tianfeng Lan
- Sino‐British Research Center for Molecular Oncology, National Center for the International Research in Cell and Gene Therapy, School of Basic Sciences, Academy of Medical SciencesZhengzhou UniversityZhengzhouHenanPeople's Republic of China
| | - Haoran Guo
- Sino‐British Research Center for Molecular Oncology, National Center for the International Research in Cell and Gene Therapy, School of Basic Sciences, Academy of Medical SciencesZhengzhou UniversityZhengzhouHenanPeople's Republic of China
| | - Jianyao Wang
- Sino‐British Research Center for Molecular Oncology, National Center for the International Research in Cell and Gene Therapy, School of Basic Sciences, Academy of Medical SciencesZhengzhou UniversityZhengzhouHenanPeople's Republic of China
| | - Guangtao Zhang
- Department of Oncology, Longhua HospitalShanghai University of Traditional Chinese MedicineShanghaiPeople's Republic of China
| | - Zheng Wang
- Academy of Chinese Medicine ScienceHenan University of Chinese MedicineZhengzhouHenanPeople's Republic of China
- Sino‐British Research Center for Molecular Oncology, National Center for the International Research in Cell and Gene Therapy, School of Basic Sciences, Academy of Medical SciencesZhengzhou UniversityZhengzhouHenanPeople's Republic of China
| | - Panpan Yang
- Sino‐British Research Center for Molecular Oncology, National Center for the International Research in Cell and Gene Therapy, School of Basic Sciences, Academy of Medical SciencesZhengzhou UniversityZhengzhouHenanPeople's Republic of China
| | - Haoze Li
- Sino‐British Research Center for Molecular Oncology, National Center for the International Research in Cell and Gene Therapy, School of Basic Sciences, Academy of Medical SciencesZhengzhou UniversityZhengzhouHenanPeople's Republic of China
| | - Chunyang Zhang
- Department of Thoracic SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanPeople's Republic of China
- Department of General Thoracic SurgeryHami Central HospitalHamiXinjiangPeople's Republic of China
| | - Yaohe Wang
- Sino‐British Research Center for Molecular Oncology, National Center for the International Research in Cell and Gene Therapy, School of Basic Sciences, Academy of Medical SciencesZhengzhou UniversityZhengzhouHenanPeople's Republic of China
- Centre for Molecular OncologyBarts Cancer Institute, Queen Mary University of LondonLondonUK
| | - Xiu‐Min Li
- Department of Microbiology and Immunology and Department of OtolaryngologyNew York Medical College and School of MedicineValhallaNew YorkUSA
| | - Mingsan Miao
- Academy of Chinese Medicine ScienceHenan University of Chinese MedicineZhengzhouHenanPeople's Republic of China
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Abstract
Germinal centers (GCs) are distinct microanatomical structures that form in the secondary lymphoid organs of endothermic vertebrates (i.e., mammals and some birds). Within GCs, B cells undergo a Darwinian selection process to identify clones which can respond to pathogen insult as well as affinity mature the B cell repertoire. The GC response ultimately generates memory B cells and bone marrow plasma cells which facilitate humoral immunological memory, the basis for successful vaccination programs. GCs have not been observed in the secondary lymphoid organs of ectothermic jawed vertebrates (i.e., fishes, reptiles, and amphibians). However, abundant research over the past decades has indicated these organisms can produce antigen specific B cell responses and some degree of affinity maturation. This review examines data demonstrating that the fundamentals of B cell selection may be more conserved across vertebrate phylogeny than previously anticipated. Further, research in both conventional mammalian model systems and comparative models raises the question of what evolutionary benefit GCs provide endotherms if they are seemingly unnecessary for generating the basic functional components of jawed vertebrate humoral adaptive immune responses.
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Luozhong S, Yuan Z, Sarmiento T, Chen Y, Gu W, McCurdy C, Gao W, Li R, Wilkens S, Jiang S. Phosphatidylserine Lipid Nanoparticles Promote Systemic RNA Delivery to Secondary Lymphoid Organs. Nano Lett 2022; 22:8304-8311. [PMID: 36194390 DOI: 10.1021/acs.nanolett.2c03234] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Secondary lymphoid organs (SLOs) are an important target for mRNA delivery in various applications. While the current delivery method relies on the drainage of nanoparticles to lymph nodes by intramuscular (IM) or subcutaneous (SC) injections, an efficient mRNA delivery carrier for SLOs-targeting delivery by systemic administration (IV) is highly desirable but yet to be available. In this study, we developed an efficient SLOs-targeting carrier using phosphatidylserine (PS), a well-known signaling molecule that promotes the endocytic activity of phagocytes and cellular entry of enveloped viruses. We adopted these biomimetic strategies and added PS into the standard four-component MC3-based LNP formulation (PS-LNP) to facilitate the cellular uptake of immune cells beyond the charge-driven targeting principle commonly used today. As a result, PS-LNP performed efficient protein expression in both lymph nodes and the spleen after IV administration. In vitro and in vivo characterizations on PS-LNP demonstrated a monocyte/macrophage-mediated SLOs-targeting delivery mechanism.
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Affiliation(s)
- Sijin Luozhong
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Zhefan Yuan
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Tara Sarmiento
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Yu Chen
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Wenchao Gu
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Caleb McCurdy
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Wenting Gao
- Department of Microbiology and Immunology, Cornell University, Ithaca, New York 14853, United States
| | - Ruoxin Li
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Stephan Wilkens
- Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, New York 13210, United States
| | - Shaoyi Jiang
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
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Sonar SA, Uhrlaub JL, Coplen CP, Sempowski GD, Dudakov JA, van den Brink MRM, LaFleur BJ, Jergović M, Nikolich-Žugich J. Early age-related atrophy of cutaneous lymph nodes precipitates an early functional decline in skin immunity in mice with aging. Proc Natl Acad Sci U S A 2022; 119:e2121028119. [PMID: 35439062 DOI: 10.1073/pnas.2121028119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Secondary lymphoid organs (SLOs) (including the spleen and lymph nodes [LNs]) are critical both for the maintenance of naive T (TN) lymphocytes and for the initiation and coordination of immune responses. How they age, including the exact timing, extent, physiological relevance, and the nature of age-related changes, remains incompletely understood. We used “time stamping” to indelibly mark newly generated naive T cells (also known as recent thymic emigrants) (RTEs) in mice, and followed their presence, phenotype, and retention in SLOs. We found that SLOs involute asynchronously. Skin-draining LNs atrophied by 6 to 9 mo in life, whereas deeper tissue-draining LNs atrophied by 18 to 20 mo, as measured by the loss of both TN numbers and the fibroblastic reticular cell (FRC) network. Time-stamped RTEs at all ages entered SLOs and successfully completed postthymic differentiation, but the capacity of older SLOs to maintain TN numbers was reduced with aging, and that trait did not depend on the age of TNs. However, in SLOs of older mice, these cells exhibited an emigration phenotype (CCR7loS1P1hi), which correlated with an increase of the cells of the same phenotype in the blood. Finally, upon intradermal immunization, RTEs generated in mice barely participated in de novo immune responses and failed to produce well-armed effector cells detectable in blood as early as by 7 to 8 mo of age. These results highlight changes in structure and function of superficial secondary lymphoid organs in laboratory mice that are earlier than expected and are consistent with the long-appreciated reduction of cutaneous immunity with aging.
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Savid-Frontera C, Viano ME, Baez NS, Reynolds D, Matellon M, Young HA, Rodriguez-Galan MC. Safety levels of systemic IL-12 induced by cDNA expression as a cancer therapeutic. Immunotherapy 2022; 14:115-133. [PMID: 34783257 PMCID: PMC8739399 DOI: 10.2217/imt-2021-0080] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Aim: The aim of this work is to utilize a gene expression procedure to safely express systemic IL-12 and evaluate its effects in mouse tumor models. Materials & methods: Secondary lymphoid organs and tumors from EL4 and B16 tumor-bearing mice were analyzed by supervised and unsupervised methods. Results: IL-12 cDNA induced systemic IL-12 protein levels lower than the tolerated dose in patients. Control of tumor growth was observed in subcutaneous B16 and EL4 tumors. Systemic IL-12 expression induced a higher frequency of both total tumor-infiltrated CD45+ cells and proliferative IFN-γ+CD8+ T cells along with a lower frequency of CD4+FOXP3+ and CD11b+Gr-1+ cells. Conclusion: This approach characterizes the systemic effects of IL-12, helping to improve treatment of metastases or solid tumors.
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Affiliation(s)
- Constanza Savid-Frontera
- Inmunología, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina
| | - Maria E Viano
- Inmunología, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina
| | - Natalia S Baez
- Inmunología, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina
| | - Della Reynolds
- Cancer & Inflammation Program, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702-1201 USA
| | - Mariana Matellon
- Inmunología, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina
| | - Howard A Young
- Cancer & Inflammation Program, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702-1201 USA
| | - Maria C Rodriguez-Galan
- Inmunología, CIBICI-CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, 5000, Argentina,Author for correspondence: Tel.: +54 351 535 3851 Ext. 55382;
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Honan AM, Chen Z. Stromal Cells Underlining the Paths From Autoimmunity, Inflammation to Cancer With Roles Beyond Structural and Nutritional Support. Front Cell Dev Biol 2021; 9:658984. [PMID: 34113615 PMCID: PMC8185233 DOI: 10.3389/fcell.2021.658984] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 04/29/2021] [Indexed: 12/14/2022] Open
Abstract
Stromal cells provide structural support and nutrients in secondary lymphoid organs and non-lymphoid tissues. However, accumulating evidence suggests that a complex relationship exists between stromal cells and immune cells. Interactions between immune cells and stromal cells have been shown to influence the pathology of both autoimmunity and cancer. This review examines the heterogeneity of stromal cells within the lymph node and non-lymphoid tissues during both homeostatic and inflammatory conditions, in particular autoimmunity and cancer, with the goal of better understanding the complex and apparently paradoxical relationship between these two classes of diseases. The review surveys potential novel mechanisms involving the interactions between stromal cells and immune cells which may contribute to the development, pathology and underlying connection between autoimmunity and cancer, including potential pathways from autoimmune inflammation to either “hot” or “cold” tumors. These interactions may provide some insights to explain the rising incidence of both autoimmunity and cancer in young women in industrialized countries and have the potential to be exploited in the development of new interventions for preventions and treatments of both autoimmune diseases and cancer.
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Affiliation(s)
- Amanda M Honan
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL, United States
| | - Zhibin Chen
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, FL, United States.,Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL, United States
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8
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Moris D, Wang J, Selim MA, Song M, Stempora L, Parker W, Kirk AD, Cendales LC. Vascularized composite allotransplants as a mechanistic model for allograft rejection - an experimental study. Transpl Int 2021; 34:572-584. [PMID: 33453073 DOI: 10.1111/tri.13820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/09/2020] [Accepted: 01/11/2021] [Indexed: 12/15/2022]
Abstract
Vascularized composite allotransplants (VCAs) seem to have several unique features of clinical and experimental importance, including uniquely definable lymphatic drainage that can be easily accessed at the level of ipsilateral regional node beds. Thus, VCA offers a unique opportunity to assess the relative contribution of peripheral and secondary lymphoid tissue to the process of rejection. We transplanted hind limb grafts from C3H donors to six different groups of C57BL/6 recipients: Spleen+ Map3k14-/- ; Spleen- Map3k14-/- ; Spleen+ Node- Map3k14-/- ; and Spleen- Node- Map3k14-/- . As positive controls, we used Map3k14+/- with or without spleen. Map3k14+/- mice demonstrated an average graft survival of 9.6 and 9.2 days for Spleen- and Spleen+ Map3k14+/- , respectively. Rejection in the Map3k14-/- group was considerably delayed (28.4 days, P = 0.002) in all recipients. The Spleen- Map3k14-/- mice rejected their hind limb allografts in an even more delayed fashion compared to Spleen+ Map3k14-/- (54.4 days, P = 0.02). Histological analysis of skin showed that acute rejection in both Map3k14+/- mice groups was graded as Banff III or Banff IV. In the Map3k14-/- groups, rejection was graded as Banff III. We demonstrated that in the absence of lymph nodes, grafts reject in a delayed fashion. Also, splenectomy in alymphoplastic mice further extends graft survival, but does not eliminate rejection all together.
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Affiliation(s)
- Dimitrios Moris
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | - Jun Wang
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | | | - Mingqing Song
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | - Linda Stempora
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | - William Parker
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | - Allan D Kirk
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | - Linda C Cendales
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
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Abstract
CD169+ macrophages are a unique type of macrophage subset that differ from M1 and M2 macrophages. CD169+ macrophages are present in multiple tissues and organs throughout the body and are primarily expressed in secondary lymphoid organs. These cells are primarily divided across three locations in secondary lymphoid organs: The metallophilic marginal zone of the spleen, the subcapsular sinus and the medulla of the lymph nodes. Due to their unique location distribution in vivo and the presence of the CD169 molecule on their surfaces, CD169+ macrophages are reported to serve important roles in several processes, such as phagocytosis, antigen presentation, immune tolerance, viral infection and inflammatory responses. At the same time, it has been reported that CD169+ macrophages may also serve an important role in anti-tumour immunity. The present review focuses on the research progress surrounding the function of CD169+ macrophages in a variety of diseases, such as viral infection, autoimmune diseases and tumours.
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Affiliation(s)
- Yu Liu
- Department of Cell Biology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Yuan Xia
- Department of Hematology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Chun-Hong Qiu
- Department of Cell Biology, School of Basic Medical Science, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China
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10
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Lasaviciute G, Bricaud AL, Hellgren F, Ingelman-Sundberg HM, Eksborg S, Jonker M, Haanstra KG, Hed Myrberg I, Sverremark-Ekström E, Loré K, Saghafian-Hedengren S, Nilsson A. Deficits in the IgG + memory B-cell recovery after anthracycline treatment is confined to the spleen of rhesus macaques. Clin Transl Immunology 2020; 9:e1150. [PMID: 32642064 PMCID: PMC7331234 DOI: 10.1002/cti2.1150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 06/08/2020] [Accepted: 06/08/2020] [Indexed: 12/28/2022] Open
Abstract
Objectives Loss of vaccine‐induced antibodies (Abs) after chemotherapy against paediatric acute lymphoblastic leukaemia (ALL) is common and often necessitates re‐immunisation after cessation of treatment. Even so, some ALL survivors fail to mount or to maintain protective Abs. Germinal centres (GCs) are clusters of proliferating B cells in follicles of secondary lymphoid tissues (SLTs) formed during adaptive immune responses and the origins of long‐lived memory B and plasma cells that are the source of Abs. Furthermore, productive GC reactions depend on T follicular helper (TFH) cells. To understand why chemotherapy induces deficits in Ab responses, we examined how SLTs were affected by chemotherapy. Methods Rhesus macaques were infused with either three cycles of the anthracycline doxorubicin or saline, followed by immunisation with a de novo and booster antigen. Spleen and lymph nodes were removed, and memory B, bulk T and TFH cells were examined. Results Despite adequate GC morphology, a diminished memory and IgG+ B‐cell population along with diminished total and booster vaccine‐specific IgG‐producing memory B cells were noted in the spleens of macaques with past doxorubicin exposure compared to the saline‐treated controls (P < 0.05). Intact bulk T and TFH cells were found in the SLTs of treated macaques, which displayed higher CD40L upregulation capacity by their splenic CXCR5+ helper T cells (P < 0.01). In contrast to the spleen, the immune cell populations studied were comparable between the lymph nodes of both saline‐ and doxorubicin‐treated macaques. Conclusion Our findings suggest that the splenic memory B‐cell subset, compared to its lymph node counterpart, is more severely altered by anthracycline treatment.
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Affiliation(s)
- Gintare Lasaviciute
- Departmet of Molecular Biosciences The Wenner-Gren Institute Stockholm University Stockholm Sweden
| | - Andréas L Bricaud
- Childhood Cancer Research Unit Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
| | - Fredrika Hellgren
- Department of Medicine Solna Division of Immunology and Allergy Karolinska Institutet and Karolinska University Hospital Stockholm Sweden.,Center for Molecular Medicine Karolinska Institutet Stockholm Sweden
| | - Hanna M Ingelman-Sundberg
- Childhood Cancer Research Unit Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
| | - Staffan Eksborg
- Childhood Cancer Research Unit Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
| | - Margreet Jonker
- Biomedical Primate Research Centre (BPRC) Rijswijk The Netherlands
| | | | - Ida Hed Myrberg
- Childhood Cancer Research Unit Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
| | - Eva Sverremark-Ekström
- Departmet of Molecular Biosciences The Wenner-Gren Institute Stockholm University Stockholm Sweden
| | - Karin Loré
- Department of Medicine Solna Division of Immunology and Allergy Karolinska Institutet and Karolinska University Hospital Stockholm Sweden.,Center for Molecular Medicine Karolinska Institutet Stockholm Sweden
| | - Shanie Saghafian-Hedengren
- Departmet of Molecular Biosciences The Wenner-Gren Institute Stockholm University Stockholm Sweden.,Childhood Cancer Research Unit Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
| | - Anna Nilsson
- Childhood Cancer Research Unit Department of Women's and Children's Health Karolinska Institutet Stockholm Sweden
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11
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Abidi A, Laurent T, Bériou G, Bouchet-Delbos L, Fourgeux C, Louvet C, Triki-Marrakchi R, Poschmann J, Josien R, Martin J. Characterization of Rat ILCs Reveals ILC2 as the Dominant Intestinal Subset. Front Immunol 2020; 11:255. [PMID: 32140157 PMCID: PMC7043102 DOI: 10.3389/fimmu.2020.00255] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 01/30/2020] [Indexed: 12/17/2022] Open
Abstract
Innate lymphoid cells (ILCs) are tissue-resident lymphocytes that lack antigen-specific receptors and exhibit innate effector functions such as cytokine production that play an important role in immediate responses to pathogens especially at mucosal sites. Mouse and human ILC subsets have been extensively characterized in various tissues and in blood. In this study, we present the first characterization of ILCs and ILC subsets in rat gut and secondary lymphoid organs using flow cytometry and single cell RNA sequencing. Our results show that phenotype and function of rat ILC subsets are conserved as compared to human and mouse ILCs. However, and in contrast to human and mouse, our study unexpectedly revealed that ILC2 and not ILC3 was the dominant ILC subset in the rat intestinal lamina propria. ILC2 predominance in the gut was independent of rat strain, sex or housing facility. In contrast, ILC3 was the predominant ILC subset in mesenteric lymph nodes and Peyer patches. In conclusion, our study demonstrates that in spite of highly conserved phenotype and function between mice, rat and humans, the distribution of ILC subsets in the intestinal mucosa is dependent on the species likely in response to both genetic and environmental factors.
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Affiliation(s)
- Ahmed Abidi
- Université de Nantes, Inserm, CHU Nantes, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France.,Université de Tunis El Manar, Laboratoire de Génétique, Immunologie et Pathologies Humaines, Faculté des Sciences de Tunis, Tunis, Tunisia
| | - Thomas Laurent
- Université de Nantes, Inserm, CHU Nantes, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
| | - Gaëlle Bériou
- Université de Nantes, Inserm, CHU Nantes, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
| | - Laurence Bouchet-Delbos
- Université de Nantes, Inserm, CHU Nantes, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
| | - Cynthia Fourgeux
- Université de Nantes, Inserm, CHU Nantes, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
| | - Cédric Louvet
- Université de Nantes, Inserm, CHU Nantes, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
| | - Raja Triki-Marrakchi
- Université de Tunis El Manar, Laboratoire de Génétique, Immunologie et Pathologies Humaines, Faculté des Sciences de Tunis, Tunis, Tunisia
| | - Jeremie Poschmann
- Université de Nantes, Inserm, CHU Nantes, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France
| | - Régis Josien
- Université de Nantes, Inserm, CHU Nantes, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France.,CHU Nantes, Laboratoire d'Immunologie, Nantes, France
| | - Jérôme Martin
- Université de Nantes, Inserm, CHU Nantes, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, Nantes, France.,CHU Nantes, Laboratoire d'Immunologie, Nantes, France
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12
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Bottasso E. Toward the Existence of a Sympathetic Neuroplasticity Adaptive Mechanism Influencing the Immune Response. A Hypothetical View-Part I. Front Endocrinol (Lausanne) 2019; 10:632. [PMID: 31616373 PMCID: PMC6763740 DOI: 10.3389/fendo.2019.00632] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 08/30/2019] [Indexed: 12/21/2022] Open
Abstract
The nervous system exerts a profound influence on the function of the immune system (IS), mainly through the sympathetic arm of the autonomic nervous system. In fact, the sympathetic nervous system richly innervates secondary lymphoid organs (SLOs) such as the spleen and lymph nodes. For decades, different research groups working in the field have consistently reported changes in the sympathetic innervation of the SLOs during the activation of the IS, which are characterized by a decreased noradrenergic activity and retraction of these fibers. Most of these groups interpreted these changes as a pathological phenomenon, referred to as "damage" or "injury" of the noradrenergic fibers. Some of them postulated that this "injury" was probably due to toxic effects of released endogenous mediators. Others, working on animal models of chronic stimulation of the IS, linked it to the very chronic nature of processes. Unlike these views, this first part of the present work reviews evidence which supports the hypothesis of a specific adaptive mechanism of neural plasticity from sympathetic fibers innervating SLOs, encompassing structural and functional changes of noradrenergic nerves. This plasticity mechanism would involve segmental retraction and degeneration of these fibers during the activation of the IS with subsequent regeneration once the steady state is recovered. The candidate molecules likely to mediate this phenomenon are also here introduced. The second part will extend this view as to the potential changes in sympathetic innervation likely to occur in inflamed non-lymphoid peripheral tissues and its possible immunological implications.
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13
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Naumenko V, Van S, Dastidar H, Kim DS, Kim SJ, Zeng Z, Deniset J, Lau A, Zhang C, Macia N, Heyne B, Jenne CN, Mahoney DJ. Visualizing Oncolytic Virus-Host Interactions in Live Mice Using Intravital Microscopy. Mol Ther Oncolytics 2018; 10:14-27. [PMID: 30073187 PMCID: PMC6070694 DOI: 10.1016/j.omto.2018.06.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 06/05/2018] [Indexed: 12/13/2022]
Abstract
Oncolytic virus (OV) therapy is an emerging cancer treatment that uses replicating viruses to infect and kill tumor cells and incite anticancer immunity. While the approach shows promise, it currently fails most patients, indicating strategies to improve OV activity are needed. Developing these will require greater understanding of OV biology, particularly in the context of OV delivery and clearance, the infection process within a complex tumor microenvironment, and the modulation of anticancer immunity. To help achieve this, we have established a technique for high-resolution 4D imaging of OV-host interactions within intact tissues of live mice using intravital microscopy (IVM). We show that oncolytic vesicular stomatitis virus (VSV) directly labeled with Alexa Fluor dyes is easily visualized by single- or multiphoton microscopy while retaining bioactivity in vivo. The addition of fluorophore-tagged antibodies and genetically encoded reporter proteins to image target cells and the virus infection enables real-time imaging of dynamic interactions between VSV and host cells in blood, tumor, and visceral organs of live mice. The method has sufficient in vivo resolution to observe leukocytes in blood binding to and transporting VSV particles, foci of VSV infection spreading through a tumor, and antigen-presenting cells in the spleen interacting with and being infected by VSV. Visualizing OV-host interactions by IVM represents a powerful new tool for studying OV therapy.
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Affiliation(s)
- Victor Naumenko
- Alberta Children's Hospital Research Institute, Calgary, AB T2N 4N1, Canada.,Arnie Charbonneau Cancer Institute, Calgary, AB T2N 4N1, Canada.,Snyder Institute for Chronic Disease, Calgary, AB T2N 4N1, Canada.,National University of Science and Technology "MISIS," Leninskiy prospect 4, 119991 Moscow, Russia
| | - Shinia Van
- Alberta Children's Hospital Research Institute, Calgary, AB T2N 4N1, Canada.,Arnie Charbonneau Cancer Institute, Calgary, AB T2N 4N1, Canada.,Snyder Institute for Chronic Disease, Calgary, AB T2N 4N1, Canada
| | - Himika Dastidar
- Alberta Children's Hospital Research Institute, Calgary, AB T2N 4N1, Canada.,Arnie Charbonneau Cancer Institute, Calgary, AB T2N 4N1, Canada.,Department of Microbiology, Immunology and Infectious Disease, Faculty of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Dae-Sun Kim
- Alberta Children's Hospital Research Institute, Calgary, AB T2N 4N1, Canada.,Arnie Charbonneau Cancer Institute, Calgary, AB T2N 4N1, Canada
| | - Seok-Joo Kim
- Snyder Institute for Chronic Disease, Calgary, AB T2N 4N1, Canada
| | - Zhutian Zeng
- Snyder Institute for Chronic Disease, Calgary, AB T2N 4N1, Canada
| | - Justin Deniset
- Snyder Institute for Chronic Disease, Calgary, AB T2N 4N1, Canada
| | - Arthur Lau
- Department of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Chunfen Zhang
- Alberta Children's Hospital Research Institute, Calgary, AB T2N 4N1, Canada.,Arnie Charbonneau Cancer Institute, Calgary, AB T2N 4N1, Canada
| | - Nicolas Macia
- Department of Chemistry, Faculty of Science, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Belinda Heyne
- Department of Chemistry, Faculty of Science, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Craig N Jenne
- Snyder Institute for Chronic Disease, Calgary, AB T2N 4N1, Canada.,Department of Microbiology, Immunology and Infectious Disease, Faculty of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Douglas J Mahoney
- Alberta Children's Hospital Research Institute, Calgary, AB T2N 4N1, Canada.,Arnie Charbonneau Cancer Institute, Calgary, AB T2N 4N1, Canada.,Department of Microbiology, Immunology and Infectious Disease, Faculty of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada.,Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada
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14
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Jud A, Kotur M, Berger C, Gysin C, Nadal D, Lünemann A. Tonsillar CD56brightNKG2A+ NK cells restrict primary Epstein-Barr virus infection in B cells via IFN-γ. Oncotarget 2018; 8:6130-6141. [PMID: 28008151 PMCID: PMC5351618 DOI: 10.18632/oncotarget.14045] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 12/13/2016] [Indexed: 01/04/2023] Open
Abstract
Natural killer (NK) cells constitute the first line of defense against viruses and cancers cells. Epstein–Barr virus (EBV) was the first human virus to be directly implicated in carcinogenesis, and EBV infection is associated with a broad spectrum of B cell lymphomas. How NK cells restrict EBV-associated oncogenesis is not understood. Here, we investigated the efficacies and mechanisms of distinct NK cell subsets from tonsils, the portal of entry of EBV, in limiting EBV infection in naïve, germinal center-associated and memory B cells. We found that CD56bright and NKG2A expression sufficiently characterizes the potent anti-EBV capacity of tonsillar NK cells. We observed restriction of EBV infection in B cells as early as 18 hours after infection. The restriction was most efficient in naïve B cells and germinal center-associated B cells, the B cell subsets that exhibited highest susceptibility to EBV infection in vitro. IFN-γ release by and partially NKp44 engagement of CD56bright and NKG2A positive NK cells mediated the restriction that eventually inhibited B-cell transformation. Thus, harnessing CD56brightNKG2A+ NK cell function might be promising to improve treatment strategies that target EBV-associated B cell lymphomas.
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Affiliation(s)
- Aurelia Jud
- Children's Research Center, University Children's Hospital, Experimental Infectious Diseases and Cancer Research, Zurich, Switzerland
| | - Monika Kotur
- Children's Research Center, University Children's Hospital, Experimental Infectious Diseases and Cancer Research, Zurich, Switzerland
| | - Christoph Berger
- Children's Research Center, University Children's Hospital, Experimental Infectious Diseases and Cancer Research, Zurich, Switzerland.,Division of Infectious Diseases, and Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Claudine Gysin
- Children's Research Center, University Children's Hospital, ENT Clinic, Zurich, Switzerland
| | - David Nadal
- Children's Research Center, University Children's Hospital, Experimental Infectious Diseases and Cancer Research, Zurich, Switzerland.,Division of Infectious Diseases, and Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
| | - Anna Lünemann
- Children's Research Center, University Children's Hospital, Experimental Infectious Diseases and Cancer Research, Zurich, Switzerland
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15
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Beura LK, Wijeyesinghe S, Thompson EA, Macchietto MG, Rosato PC, Pierson MJ, Schenkel JM, Mitchell JS, Vezys V, Fife BT, Shen S, Masopust D. T Cells in Nonlymphoid Tissues Give Rise to Lymph-Node-Resident Memory T Cells. Immunity 2018; 48:327-338.e5. [PMID: 29466758 PMCID: PMC5828517 DOI: 10.1016/j.immuni.2018.01.015] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 10/20/2017] [Accepted: 01/29/2018] [Indexed: 12/26/2022]
Abstract
Immunosurveillance of secondary lymphoid organs (SLO) is performed by central memory T cells that recirculate through blood. Resident memory T (Trm) cells remain parked in nonlymphoid tissues and often stably express CD69. We recently identified Trm cells within SLO, but the origin and phenotype of these cells remains unclear. Using parabiosis of "dirty" mice, we found that CD69 expression is insufficient to infer stable residence of SLO Trm cells. Restimulation of nonlymphoid memory CD8+ T cells within the skin or mucosa resulted in a substantial increase in bona fide Trm cells specifically within draining lymph nodes. SLO Trm cells derived from emigrants from nonlymphoid tissues and shared some transcriptional and phenotypic signatures associated with nonlymphoid Trm cells. These data indicate that nonlymphoid cells can give rise to SLO Trm cells and suggest vaccination strategies by which memory CD8+ T cell immunosurveillance can be regionalized to specific lymph nodes.
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Affiliation(s)
- Lalit K Beura
- Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN 55455, USA; Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Sathi Wijeyesinghe
- Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN 55455, USA; Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Emily A Thompson
- Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN 55455, USA; Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Marissa G Macchietto
- Institute for Health Informatics, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Pamela C Rosato
- Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN 55455, USA; Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Mark J Pierson
- Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN 55455, USA; Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Jason M Schenkel
- Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN 55455, USA; Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Jason S Mitchell
- Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA; Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Vaiva Vezys
- Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN 55455, USA; Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Brian T Fife
- Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA; Department of Medicine, University of Minnesota, Minneapolis, MN 55455, USA
| | - Steven Shen
- Institute for Health Informatics, University of Minnesota, Minneapolis, MN, 55455, USA
| | - David Masopust
- Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN 55455, USA; Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA.
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16
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Abstract
Prion diseases are sub-acute neurodegenerative diseases that affect humans and some domestic and free-ranging animals. Infectious prion agents are considered to comprise solely of abnormally folded isoforms of the cellular prion protein known as PrPSc. Pathology during prion disease is restricted to the central nervous system where it causes extensive neurodegeneration and ultimately leads to the death of the host. The first half of this review provides a thorough account of our understanding of the various ways in which PrPSc prions may spread between individuals within a population, both horizontally and vertically. Many natural prion diseases are acquired peripherally, such as by oral exposure, lesions to skin or mucous membranes, and possibly also via the nasal cavity. Following peripheral exposure, some prions accumulate to high levels within the secondary lymphoid organs as they make their journey from the site of infection to the brain, a process termed neuroinvasion. The replication of PrPSc prions within secondary lymphoid organs is important for their efficient spread to the brain. The second half of this review describes the key tissues, cells and molecules which are involved in the propagation of PrPSc prions from peripheral sites of exposure (such as the lumen of the intestine) to the brain. This section also considers how additional factors such as inflammation and aging might influence prion disease susceptibility.
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Affiliation(s)
- Neil A Mabbott
- The Roslin Institute & Royal (Dick) School of Veterinary Sciences, University of Edinburgh, Easter Bush, Midlothian EH25 9RG, UK
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17
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Baskakov IV. Limited understanding of the functional diversity of N-linked glycans as a major gap of prion biology. Prion 2017; 11:82-88. [PMID: 28324664 PMCID: PMC5399891 DOI: 10.1080/19336896.2017.1301338] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 02/23/2017] [Accepted: 02/24/2017] [Indexed: 10/19/2022] Open
Abstract
Among a broad range of hypotheses on the molecular nature of transmissible spongiform encephalopathy or scrapie agents discussed in 1960s was a hypothesis of self-replicating polysaccharides. While the studies of the past 40 years provided unambiguous proof that this is not the case, emerging evidence suggests that carbohydrates in the form of sialylated N-linked glycans, which are a constitutive part of mammalian prions or PrPSc, are essential in determining prion fate in an organism. The current extra-view article discusses recent advancements on the role of N-linked glycans and specifically their sialylation status in controlling prion fate. In addition, this manuscript introduces a new concept on the important role of strain-specific functional carbohydrate epitopes on the PrPSc surface as main determinants of strain-specific biologic features. According to this concept, individual strain-specific folding patterns of PrPSc govern selection of PrPC sialoglycoforms expressed by a host that can be accommodated within particular PrPSc structures. Strain-specific patterns of functional carbohydrate epitopes formed by N-linked glycans on PrPSc surfaces define strain-specific biologic features. As a constitutive part of PrPSc, the individual strain-specific patterns of carbohydrate epitopes propagate faithfully within a given host as long as individual strain-specific PrPSc structures are maintained, ensuring inheritance of strain-specific biologic features.
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Affiliation(s)
- Ilia V. Baskakov
- Center for Biomedical Engineering and Technology and Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
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18
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Spitzer MH, Carmi Y, Reticker-Flynn NE, Kwek SS, Madhireddy D, Martins MM, Gherardini PF, Prestwood TR, Chabon J, Bendall SC, Fong L, Nolan GP, Engleman EG. Systemic Immunity Is Required for Effective Cancer Immunotherapy. Cell 2017; 168:487-502.e15. [PMID: 28111070 PMCID: PMC5312823 DOI: 10.1016/j.cell.2016.12.022] [Citation(s) in RCA: 611] [Impact Index Per Article: 87.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 10/27/2016] [Accepted: 12/15/2016] [Indexed: 12/15/2022]
Abstract
Immune responses involve coordination across cell types and tissues. However, studies in cancer immunotherapy have focused heavily on local immune responses in the tumor microenvironment. To investigate immune activity more broadly, we performed an organism-wide study in genetically engineered cancer models using mass cytometry. We analyzed immune responses in several tissues after immunotherapy by developing intuitive models for visualizing single-cell data with statistical inference. Immune activation was evident in the tumor and systemically shortly after effective therapy was administered. However, during tumor rejection, only peripheral immune cells sustained their proliferation. This systemic response was coordinated across tissues and required for tumor eradication in several immunotherapy models. An emergent population of peripheral CD4 T cells conferred protection against new tumors and was significantly expanded in patients responding to immunotherapy. These studies demonstrate the critical impact of systemic immune responses that drive tumor rejection.
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Affiliation(s)
- Matthew H Spitzer
- Department of Pathology, Stanford University, Stanford, CA 94305, USA; Baxter Lab in Stem Cell Biology, Department of Microbiology and Immunology, Stanford University, Stanford, CA 94305, USA; Program in Immunology, Stanford University, Stanford, CA 94305, USA; Department of Microbiology and Immunology, University of California, San Francisco, San Francisco, CA 94143, USA; Helen Diller Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94143, USA.
| | - Yaron Carmi
- Department of Pathology, Stanford University, Stanford, CA 94305, USA; Department of Pathology, The Sackler School of Medicine, Tel-Aviv University, Ramat Aviv 69978, Israel
| | | | - Serena S Kwek
- Division of Hematology and Oncology, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Deepthi Madhireddy
- Baxter Lab in Stem Cell Biology, Department of Microbiology and Immunology, Stanford University, Stanford, CA 94305, USA
| | - Maria M Martins
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Pier Federico Gherardini
- Baxter Lab in Stem Cell Biology, Department of Microbiology and Immunology, Stanford University, Stanford, CA 94305, USA
| | - Tyler R Prestwood
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Jonathan Chabon
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Sean C Bendall
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Lawrence Fong
- Division of Hematology and Oncology, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA; Helen Diller Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Garry P Nolan
- Baxter Lab in Stem Cell Biology, Department of Microbiology and Immunology, Stanford University, Stanford, CA 94305, USA; Program in Immunology, Stanford University, Stanford, CA 94305, USA.
| | - Edgar G Engleman
- Department of Pathology, Stanford University, Stanford, CA 94305, USA; Program in Immunology, Stanford University, Stanford, CA 94305, USA.
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19
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Srivastava S, Katorcha E, Daus ML, Lasch P, Beekes M, Baskakov IV. Sialylation Controls Prion Fate in Vivo. J Biol Chem 2016; 292:2359-2368. [PMID: 27998976 DOI: 10.1074/jbc.m116.768010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 12/07/2016] [Indexed: 11/06/2022] Open
Abstract
Prions or PrPSc are proteinaceous infectious agents that consist of misfolded, self-replicating states of a sialoglycoprotein called the prion protein or PrPC The current work tests a new hypothesis that sialylation determines the fate of prions in an organism. To begin, we produced control PrPSc from PrPC using protein misfolding cyclic amplification with beads (PMCAb), and also generated PrPSc with reduced sialylation levels using the same method but with partially desialylated PrPC as a substrate (dsPMCAb). Syrian hamsters were inoculated intraperitoneally with brain-derived PrPSc or PrPSc produced in PMCAb or dsPMCAb and then monitored for disease. Animals inoculated with brain- or PMCAb-derived PrPSc developed prion disease, whereas administration of dsPMCAb-derived PrPSc with reduced sialylation did not cause prion disease. Animals inoculated with dsPMCAb-derived material were not subclinical carriers of scrapie, as no PrPSc was detected in brains or spleen of these animals by either Western blotting or after amplification by serial PMCAb. In subsequent experiments, trafficking of brain-, PMCAb-, and dsPMCAb-derived PrPSc to secondary lymphoid organs was monitored in wild type mice. PrPSc sialylation was found to be critical for effective trafficking of PrPSc to secondary lymphoid organs. By 6 hours after inoculation, brain- and PMCAb-derived PrPSc were found in spleen and lymph nodes, whereas dsPMCAb-derived PrPSc was found predominantly in liver. This study demonstrates that the outcome of prion transmission to a wild type host is determined by the sialylation status of the inoculated PrPSc Furthermore, this work suggests that the sialylation status of PrPSc plays an important role in prion lymphotropism.
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Affiliation(s)
- Saurabh Srivastava
- From the Center for Biomedical Engineering and Technology and.,Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, Maryland 21201 and
| | - Elizaveta Katorcha
- From the Center for Biomedical Engineering and Technology and.,Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, Maryland 21201 and
| | - Martin L Daus
- the Centre for Biological Threats and Special Pathogens, Robert Koch-Institute, 13353 Berlin, Germany
| | - Peter Lasch
- the Centre for Biological Threats and Special Pathogens, Robert Koch-Institute, 13353 Berlin, Germany
| | - Michael Beekes
- the Centre for Biological Threats and Special Pathogens, Robert Koch-Institute, 13353 Berlin, Germany
| | - Ilia V Baskakov
- From the Center for Biomedical Engineering and Technology and .,Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, Maryland 21201 and
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20
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Kim J, Wu B, Niedzielski SM, Hill MT, Coleman RM, Ono A, Shikanov A. Characterizing natural hydrogel for reconstruction of three-dimensional lymphoid stromal network to model T-cell interactions. J Biomed Mater Res A 2015; 103:2701-10. [PMID: 25649205 DOI: 10.1002/jbm.a.35409] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 01/21/2015] [Accepted: 01/27/2015] [Indexed: 01/26/2023]
Abstract
Hydrogels have been used in regenerative medicine because they provide a three-dimensional environment similar to soft tissues, allow diffusion of nutrients, present critical biological signals, and degrade via endogenous enzymatic mechanisms. Herein, we developed in vitro system mimicking cell-cell and cell-matrix interactions in secondary lymphoid organs (SLOs). Existing in vitro culture systems cannot accurately represent the complex interactions happening between T-cells and stromal cells in immune response. To model T-cell interaction in SLOs in vitro, we encapsulated stromal cells in fibrin, collagen, or fibrin-collagen hydrogels and studied how different mechanical and biological properties affect stromal network formation. Overall, fibrin supplemented with aprotinin was superior to collagen and fibrin-collagen in terms of network formation and promotion of T-cell penetration. After 8 days of culture, stromal networks formed through branching and joining with other adjacent cell populations. T-cells added to the newly formed stromal networks migrated and attached to stromal cells, similar to the T-cell zones of the lymph nodes in vivo. Our results suggest that the constructed three-dimensional lymphoid stromal network can mimic the in vivo environment and allow the modeling of T-cell interaction in SLOs.
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Affiliation(s)
- Jiwon Kim
- Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan
| | - Biming Wu
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | | | - Matthew T Hill
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Rhima M Coleman
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Akira Ono
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan
| | - Ariella Shikanov
- Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
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Ferreira M, Veiga-Fernandes H. Pre-birth world and the development of the immune system: mum's diet affects our adult health: new insight on how the diet during pregnancy permanently influences offspring health and immune fitness. Bioessays 2014; 36:1213-20. [PMID: 25382781 DOI: 10.1002/bies.201400115] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Secondary lymphoid organs form in utero through an inherited and well-established developmental program. However, maternal non-heritable features can have a major impact on the gene expression of the embryo, hence influencing the future health of the offspring. Recently, maternal retinoids were shown to regulate the formation of immune structures, shedding light on the role of maternal nutrition in the genetic signature of emergent immune cells. Here we highlight evidence showing how the maternal diet influences the establishment of the immune system, and we also discuss how unbalanced maternal diets may set the response to infection and vaccination in the progeny.
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Affiliation(s)
- Manuela Ferreira
- Instituto de Medicina Molecular, Faculdade de Medicina de Lisboa, Lisboa, Portugal
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22
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Aguzzi A, Kranich J, Krautler NJ. Follicular dendritic cells: origin, phenotype, and function in health and disease. Trends Immunol 2013; 35:105-13. [PMID: 24315719 DOI: 10.1016/j.it.2013.11.001] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Revised: 10/31/2013] [Accepted: 11/07/2013] [Indexed: 01/15/2023]
Abstract
Follicular dendritic cells (FDCs) were originally identified by their specific morphology and by their ability to trap immune-complexed antigen in B cell follicles. By virtue of the latter as well as the provision of chemokines, adhesion molecules, and trophic factors, FDCs participate in the shaping of B cell responses. Importantly, FDCs also supply tingible body macrophages (TBMs) with the eat-me-signaling molecule milk fat globule-EGF factor 8 (Mfge8), thereby enabling the disposal of apoptotic B cells. Recent studies have provided fundamental insights into the multiple functions of FDCs in both physiological and pathophysiological contexts and into their origin. Here we review these findings, and discuss current concepts related to FDC histogenesis both in lymphoid organs and in inflammatory lymphoneogenesis.
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Affiliation(s)
- Adriano Aguzzi
- Institute of Neuropathology, University of Zurich, Zurich, Switzerland.
| | - Jan Kranich
- Institute for Immunology, Ludwig Maximilians University, Munich, Germany
| | - Nike Julia Krautler
- Garvan Institute of Medical Research, Darlinghurst, New South Wales, Sydney, Australia.
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23
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Roth K, Oehme L, Zehentmeier S, Zhang Y, Niesner R, Hauser AE. Tracking plasma cell differentiation and survival. Cytometry A 2013; 85:15-24. [PMID: 24700574 DOI: 10.1002/cyto.a.22355] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 07/22/2013] [Accepted: 08/18/2013] [Indexed: 01/21/2023]
Abstract
Plasma cells play a crucial role for the humoral immune response as they represent the body's factories for antibody production. The differentiation from a B cell into a plasma cell is controlled by a complex transcriptional network and happens within secondary lymphoid organs. Based on their lifetime, two types of antibody secreting cells can be distinguished: Short-lived plasma cells are located in extrafollicular sites of secondary lymphoid organs such as lymph node medullary cords and the splenic red pulp. A fraction of plasmablasts migrate from secondary lymphoid organs to the bone marrow where they can become long-lived plasma cells. Bone marrow plasma cells reside in special microanatomical environments termed survival niches, which provide factors promoting their longevity. Reticular stromal cells producing the chemokine CXCL12, which is known to attract plasmablasts to the bone marrow but also to promote plasma cell survival, play a crucial role in the maintenance of these niches. In addition, hematopoietic cells are contributing to the niches by providing other soluble survival factors. Here, we review the current knowledge on the factors involved in plasma cell differentiation, their localization and migration. We also give an overview on what is known regarding the maintenance of long lived plasma cells in survival niches of the bone marrow.
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Affiliation(s)
- Katrin Roth
- Deutsches Rheuma Forschungszentrum (DRFZ), a Leibniz Institute, Charitéplatz 1, D-10117 Berlin, Germany
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24
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Alvarez B, Poderoso T, Alonso F, Ezquerra A, Domínguez J, Revilla C. Antigen targeting to APC: from mice to veterinary species. Dev Comp Immunol 2013; 41:153-163. [PMID: 23648645 DOI: 10.1016/j.dci.2013.04.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 04/24/2013] [Accepted: 04/25/2013] [Indexed: 06/02/2023]
Abstract
Antigen delivery to receptors expressed on antigen presenting cells (APC) has shown to improve immunogenicity of vaccines in mice. An enhancement of cytotoxic T lymphocyte (CTL), helper T cell or humoral responses was obtained depending on the type of APC and the surface molecule targeted. Although this strategy is being also evaluated in livestock animals with promising results, some discrepancies have been found between species and pathogens. The genetic diversity of livestock animals, the different pattern of expression of some receptors among species, the use of different markers to characterize APC in large animals and sometimes the lack of reagents make difficult to compare results obtained in different species. In this review, we summarize the data available regarding antigen targeting to APC receptors in cattle, sheep and pig and discuss the results found in these animals in the context of what has been obtained in mice.
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Affiliation(s)
- B Alvarez
- Dpto. Biotecnología, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, 28040 Madrid, Spain
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25
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Venet S, Kosco-Vilbois M, Fischer N. Comparing CDRH3 diversity captured from secondary lymphoid organs for the generation of recombinant human antibodies. MAbs 2013; 5:690-8. [PMID: 23924800 DOI: 10.4161/mabs.25592] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The plasticity of natural immunoglobulin repertoires can be exploited for the generation of phage display libraries. Secondary lymphoid organs, such as the spleen and the lymph nodes, constitute interesting sources of diversity because they are rich in B cells, part of which can be affinity matured. These organs, however, differ in their anatomical structure, reflecting the different fluids they drain, which affects the B cell repertoires. The CDRH3 repertoires from these organs, extracted from naïve or immunized mice, were compared in the context of phage display libraries using human antibody framework families. Deep sequencing analysis revealed that all libraries displayed different CDRH3 repertoires, but the one derived from lymph nodes of naïve mice was the most diverse. Library performance was assessed by in vitro selection. For both organs, immunization increased substantially the frequency of molecules able to bind to the immunogen. The library derived from lymph nodes from naïve mice, however, was the most effective in generating diverse and high affinity candidates. These results illustrate that the use of a biased CDRH3 repertoire increases the performance of libraries, but reduces the clonal diversity, which may be detrimental for certain strategies.
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26
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Abstract
CD4 T cells, and especially T follicular helper cells, are critical for the generation of a robust humoral response to an infection or vaccination. Importantly, immunosenescence affects CD4 T-cell function, and the accumulation of intrinsic defects decreases the cognate helper functions of these cells. However, much less is known about the contribution of the aged microenvironment to this impaired CD4 T-cell response. In this study, we have employed a preclinical model to determine whether the aged environment contributes to the defects in CD4 T-cell functions with aging. Using an adoptive transfer model in mice, we demonstrate for the first time that the aged microenvironment negatively impacts at least three steps of the CD4 T-cell response to antigenic stimulation. First, the recruitment of CD4 T cells to the spleen is reduced in aged compared to young hosts, which correlates with dysregulated chemokine expression in the aged organ. Second, the priming of CD4 T cells by DCs is reduced in aged compared to young mice. Finally, naïve CD4 T cells show a reduced transition to a T follicular helper cell phenotype in the aged environment, which impairs the subsequent generation of germinal centers. These studies have provided new insights into how aging impacts the immune system and how these changes influence the development of immunity to infections or vaccinations.
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Affiliation(s)
- Julie S Lefebvre
- Trudeau Institute, 154 Algonquin Ave, Saranac Lake, NY 12983, USA
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27
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Rangel-Moreno J, Carragher D, Randall TD. Role of lymphotoxin and homeostatic chemokines in the development and function of local lymphoid tissues in the respiratory tract. Inmunologia 2007; 26:13-28. [PMID: 20552039 PMCID: PMC2884405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Secondary lymphoid organs are strategically placed to recruit locally activated antigen presenting cells (APCs) as well as naïve, recirculating T and B cells. The structure of secondary lymphoid organs - separated B and T zones, populations of specialized stromal cells, high endothelial venules and lymphatic vessles - has also evolved to maximize encounters between APCs and lymphocytes and to facilitate the expansion and differentiation of antigen-stimulated T and B cells. Many of the general mechanisms that govern the development and organization of secondary lymphoid organs have been identified over the last decade. However, the specific cellular and molecular interactions involved in the development and organization of each secondary lymphoid organ are slightly different and probably reflect the cell types available at that time and location. Here we review the mechanisms involved in the development, organization and function of local lymphoid tissues in the respiratory tract, including Nasal Associated Lymphoid Tissue (NALT) and inducible Bronchus Associated Lymphoid Tissue (iBALT).
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