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Šimon M, Mikec Š, Atanur SS, Konc J, Morton NM, Horvat S, Kunej T. Whole genome sequencing of mouse lines divergently selected for fatness (FLI) and leanness (FHI) revealed several genetic variants as candidates for novel obesity genes. Genes Genomics 2024; 46:557-575. [PMID: 38483771 PMCID: PMC11024027 DOI: 10.1007/s13258-024-01507-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 02/25/2024] [Indexed: 04/18/2024]
Abstract
BACKGROUND Analysing genomes of animal model organisms is widely used for understanding the genetic basis of complex traits and diseases, such as obesity, for which only a few mouse models exist, however, without their lean counterparts. OBJECTIVE To analyse genetic differences in the unique mouse models of polygenic obesity (Fat line) and leanness (Lean line) originating from the same base population and established by divergent selection over more than 60 generations. METHODS Genetic variability was analysed using WGS. Variants were identified with GATK and annotated with Ensembl VEP. g.Profiler, WebGestalt, and KEGG were used for GO and pathway enrichment analysis. miRNA seed regions were obtained with miRPathDB 2.0, LncRRIsearch was used to predict targets of identified lncRNAs, and genes influencing adipose tissue amount were searched using the IMPC database. RESULTS WGS analysis revealed 6.3 million SNPs, 1.3 million were new. Thousands of potentially impactful SNPs were identified, including within 24 genes related to adipose tissue amount. SNP density was highest in pseudogenes and regulatory RNAs. The Lean line carries SNP rs248726381 in the seed region of mmu-miR-3086-3p, which may affect fatty acid metabolism. KEGG analysis showed deleterious missense variants in immune response and diabetes genes, with food perception pathways being most enriched. Gene prioritisation considering SNP GERP scores, variant consequences, and allele comparison with other mouse lines identified seven novel obesity candidate genes: 4930441H08Rik, Aff3, Fam237b, Gm36633, Pced1a, Tecrl, and Zfp536. CONCLUSION WGS revealed many genetic differences between the lines that accumulated over the selection period, including variants with potential negative impacts on gene function. Given the increasing availability of mouse strains and genetic polymorphism catalogues, the study is a valuable resource for researchers to study obesity.
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Affiliation(s)
- Martin Šimon
- Chair of Genetics, Animal Biotechnology and Immunology, Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Domžale, 1230, Slovenia.
| | - Špela Mikec
- Chair of Genetics, Animal Biotechnology and Immunology, Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Domžale, 1230, Slovenia
| | - Santosh S Atanur
- Faculty of Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, SW7 2AZ, UK
- Centre for Genomic and Experimental Medicine, University of Edinburgh, Edinburgh, EH4 2XU, UK
| | - Janez Konc
- Laboratory for Molecular Modeling, National Institute of Chemistry, Ljubljana, 1000, Slovenia
| | - Nicholas M Morton
- The Queen's Medical Research Institute, Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, EH4 2XU, UK
| | - Simon Horvat
- Chair of Genetics, Animal Biotechnology and Immunology, Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Domžale, 1230, Slovenia
| | - Tanja Kunej
- Chair of Genetics, Animal Biotechnology and Immunology, Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Domžale, 1230, Slovenia.
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2
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Mignini I, Piccirilli G, Termite F, Paratore M, Esposto G, Laterza L, Scaldaferri F, Ainora ME, Gasbarrini A, Zocco MA. Extracellular Vesicles: Novel Potential Therapeutic Agents in Inflammatory Bowel Diseases. Cells 2023; 13:90. [PMID: 38201294 PMCID: PMC10778449 DOI: 10.3390/cells13010090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 12/24/2023] [Accepted: 12/29/2023] [Indexed: 01/12/2024] Open
Abstract
Patients affected by inflammatory bowel diseases (IBD) can nowadays benefit from a growing number of pharmacological options. However, in moderate-to-severe cases, the therapeutic response is still far from optimal, and treatment changes and optimizations are often required. Thus, researchers in this field are strongly engaged in studies aiming to identify new potential therapeutic targets. Extracellular vesicles (EVs) are tiny subcellular bodies with a phospholipid bilayer envelope containing bioactive molecules, which are released from different cells and are involved in intercellular communication. Recent pre-clinical data show their emerging role in the pathogenesis and treatment of IBD. In our review, we summarize current evidence about the function of EVs as active therapeutic agents in ulcerative colitis and Crohn's disease, analyzing the properties of EVs derived from different cellular sources and the mechanisms through which they may improve intestinal inflammation.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Maria Assunta Zocco
- CEMAD Digestive Diseases Center, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, Università Cattolica del Sacro Cuore, Largo A. Gemelli 8, 00168 Rome, Italy; (I.M.); (G.P.); (F.T.); (M.P.); (G.E.); (L.L.); (F.S.); (M.E.A.); (A.G.)
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3
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Rundberg Nilsson AJ, Xian H, Shalapour S, Cammenga J, Karin M. IRF1 regulates self-renewal and stress responsiveness to support hematopoietic stem cell maintenance. SCIENCE ADVANCES 2023; 9:eadg5391. [PMID: 37889967 PMCID: PMC10610924 DOI: 10.1126/sciadv.adg5391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 09/27/2023] [Indexed: 10/29/2023]
Abstract
Hematopoietic stem cells (HSCs) are tightly controlled to maintain a balance between blood cell production and self-renewal. While inflammation-related signaling is a critical regulator of HSC activity, the underlying mechanisms and the precise functions of specific factors under steady-state and stress conditions remain incompletely understood. We investigated the role of interferon regulatory factor 1 (IRF1), a transcription factor that is affected by multiple inflammatory stimuli, in HSC regulation. Our findings demonstrate that the loss of IRF1 from mouse HSCs significantly impairs self-renewal, increases stress-induced proliferation, and confers resistance to apoptosis. In addition, given the frequent abnormal expression of IRF1 in leukemia, we explored the potential of IRF1 expression level as a stratification marker for human acute myeloid leukemia. We show that IRF1-based stratification identifies distinct cancer-related signatures in patient subgroups. These findings establish IRF1 as a pivotal HSC controller and provide previously unknown insights into HSC regulation, with potential implications to IRF1 functions in the context of leukemia.
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Affiliation(s)
- Alexandra J. S. Rundberg Nilsson
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, CA, USA
- Division of Molecular Medicine and Gene Therapy, Institution for Laboratory Medicine, Medical Faculty, Lund University, Lund, Sweden
- Lund Stem Cell Center, Medical Faculty, Lund University, Lund, Sweden
| | - Hongxu Xian
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, CA, USA
| | - Shabnam Shalapour
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, CA, USA
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jörg Cammenga
- Division of Molecular Medicine and Gene Therapy, Institution for Laboratory Medicine, Medical Faculty, Lund University, Lund, Sweden
- Lund Stem Cell Center, Medical Faculty, Lund University, Lund, Sweden
| | - Michael Karin
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, School of Medicine, University of California San Diego, La Jolla, CA, USA
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4
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Small GW, Akhtari FS, Green AJ, Havener TM, Sikes M, Quintanhila J, Gonzalez RD, Reif DM, Motsinger-Reif AA, McLeod HL, Wiltshire T. Pharmacogenomic Analyses Implicate B Cell Developmental Status and MKL1 as Determinants of Sensitivity toward Anti-CD20 Monoclonal Antibody Therapy. Cells 2023; 12:1574. [PMID: 37371044 DOI: 10.3390/cells12121574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/02/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
Monoclonal antibody (mAb) therapy directed against CD20 is an important tool in the treatment of B cell disorders. However, variable patient response and acquired resistance remain important clinical challenges. To identify genetic factors that may influence sensitivity to treatment, the cytotoxic activity of three CD20 mAbs: rituximab; ofatumumab; and obinutuzumab, were screened in high-throughput assays using 680 ethnically diverse lymphoblastoid cell lines (LCLs) followed by a pharmacogenomic assessment. GWAS analysis identified several novel gene candidates. The most significant SNP, rs58600101, in the gene MKL1 displayed ethnic stratification, with the variant being significantly more prevalent in the African cohort and resulting in reduced transcript levels as measured by qPCR. Functional validation of MKL1 by shRNA-mediated knockdown of MKL1 resulted in a more resistant phenotype. Gene expression analysis identified the developmentally associated TGFB1I1 as the most significant gene associated with sensitivity. qPCR among a panel of sensitive and resistant LCLs revealed immunoglobulin class-switching as well as differences in the expression of B cell activation markers. Flow cytometry showed heterogeneity within some cell lines relative to surface Ig isotype with a shift to more IgG+ cells among the resistant lines. Pretreatment with prednisolone could partly reverse the resistant phenotype. Results suggest that the efficacy of anti-CD20 mAb therapy may be influenced by B cell developmental status as well as polymorphism in the MKL1 gene. A clinical benefit may be achieved by pretreatment with corticosteroids such as prednisolone followed by mAb therapy.
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Affiliation(s)
- George W Small
- Pharmacotherapy and Experimental Therapeutics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Farida S Akhtari
- Biostatistics and Computational Biology Branch, Division of Intramural Research, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Adrian J Green
- Department of Biological Sciences, Bioinformatics Research Center, North Carolina State University, Raleigh, NC 27695, USA
| | - Tammy M Havener
- Structural Genomics Consortium and Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Michael Sikes
- Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695, USA
| | | | - Ricardo D Gonzalez
- Pharmacotherapy and Experimental Therapeutics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - David M Reif
- Predictive Toxicology Branch, Division of Translational Toxicology, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Alison A Motsinger-Reif
- Biostatistics and Computational Biology Branch, Division of Intramural Research, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA
| | - Howard L McLeod
- Center for Precision Medicine and Functional Genomics, Utah Tech University, 225 South University Ave, St. George, UT 84770, USA
| | - Tim Wiltshire
- Pharmacotherapy and Experimental Therapeutics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Center for Pharmacogenomics and Individualized Therapy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
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5
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Hofland T, Danelli L, Cornish G, Donnarumma T, Hunt DM, de Carvalho LPS, Kassiotis G. CD4 + T cell memory is impaired by species-specific cytotoxic differentiation, but not by TCF-1 loss. Front Immunol 2023; 14:1168125. [PMID: 37122720 PMCID: PMC10140371 DOI: 10.3389/fimmu.2023.1168125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 03/30/2023] [Indexed: 05/02/2023] Open
Abstract
CD4+ T cells are typically considered as 'helper' or 'regulatory' populations that support and orchestrate the responses of other lymphocytes. However, they can also develop potent granzyme (Gzm)-mediated cytotoxic activity and CD4+ cytotoxic T cells (CTLs) have been amply documented both in humans and in mice, particularly in the context of human chronic infection and cancer. Despite the established description of CD4+ CTLs, as well as of the critical cytotoxic activity they exert against MHC class II-expressing targets, their developmental and memory maintenance requirements remain elusive. This is at least in part owing to the lack of a murine experimental system where CD4+ CTLs are stably induced. Here, we show that viral and bacterial vectors encoding the same epitope induce distinct CD4+ CTL responses in challenged mice, all of which are nevertheless transient in nature and lack recall properties. Consistent with prior reports, CD4+ CTL differentiation is accompanied by loss of TCF-1 expression, a transcription factor considered essential for memory T cell survival. Using genetic ablation of Tcf7, which encodes TCF-1, at the time of CD4+ T cell activation, we further show that, contrary to observations in CD8+ T cells, continued expression of TCF-1 is not required for CD4+ T cell memory survival. Whilst Tcf7-deficient CD4+ T cells persisted normally following retroviral infection, the CD4+ CTL subset still declined, precluding conclusive determination of the requirement for TCF-1 for murine CD4+ CTL survival. Using xenotransplantation of human CD4+ T cells into murine recipients, we demonstrate that human CD4+ CTLs develop and persist in the same experimental conditions where murine CD4+ CTLs fail to persist. These observations uncover a species-specific defect in murine CD4+ CTL persistence with implications for their use as a model system.
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Affiliation(s)
- Tom Hofland
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Luca Danelli
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Georgina Cornish
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Tiziano Donnarumma
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Deborah M. Hunt
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Luiz P. S. de Carvalho
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, London, United Kingdom
| | - George Kassiotis
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, United Kingdom
- Department of Infectious Disease, Faculty of Medicine, Imperial College London, London, United Kingdom
- *Correspondence: George Kassiotis,
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6
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Li DF, Yang MF, Xu J, Xu HM, Zhu MZ, Liang YJ, Zhang Y, Tian CM, Nie YQ, Shi RY, Wang LS, Yao J. Extracellular Vesicles: The Next Generation Theranostic Nanomedicine for Inflammatory Bowel Disease. Int J Nanomedicine 2022; 17:3893-3911. [PMID: 36092245 PMCID: PMC9462519 DOI: 10.2147/ijn.s370784] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 08/25/2022] [Indexed: 12/02/2022] Open
Abstract
The recent rapid development in the field of extracellular vesicles (EVs) based nanotechnology has provided unprecedented opportunities for nanomedicine platforms. As natural nanocarriers, EVs such as exosomes, exosome-like nanoparticles and outer membrane vesicles (OMVs), have unique structure/composition/morphology characteristics, and show excellent physical and chemical/biochemical properties, making them a new generation of theranostic nanomedicine. Here, we reviewed the characteristics of EVs from the perspective of their formation and biological function in inflammatory bowel disease (IBD). Moreover, EVs can crucially participate in the interaction and communication of intestinal epithelial cells (IECs)-immune cells-gut microbiota to regulate immune response, intestinal inflammation and intestinal homeostasis. Interestingly, based on current representative examples in the field of exosomes and exosome-like nanoparticles for IBD treatment, it is shown that plant, milk, and cells-derived exosomes and exosome-like nanoparticles can exert a therapeutic effect through their components, such as proteins, nucleic acid, and lipids. Moreover, several drug loading methods and target modification of exosomes are used to improve their therapeutic capability. We also discussed the application of exosomes and exosome-like nanoparticles in the treatment of IBD. In this review, we aim to better and more clearly clarify the underlying mechanisms of the EVs in the pathogenesis of IBD, and provide directions of exosomes and exosome-like nanoparticles mediated for IBD treatment.
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Affiliation(s)
- De-Feng Li
- Department of Gastroenterology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, People's Republic of China
| | - Mei-Feng Yang
- Department of Hematology, Yantian District People's Hospital, Shenzhen, People's Republic of China
| | - Jing Xu
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital (School of Medicine of South China University of Technology), Guangzhou, People's Republic of China
| | - Hao-Ming Xu
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital (School of Medicine of South China University of Technology), Guangzhou, People's Republic of China
| | - Min-Zheng Zhu
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital (School of Medicine of South China University of Technology), Guangzhou, People's Republic of China
| | - Yu-Jie Liang
- Department of Child and Adolescent Psychiatry, Shenzhen Kangning Hospital, Shenzhen, People's Republic of China
| | - Yuan Zhang
- Department of Medical Administration, Huizhou Institute of Occupational Diseases Control and Prevention, Huizhou, People's Republic of China
| | - Cheng-Mei Tian
- Department of Emergency, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, People's Republic of China
| | - Yu-Qiang Nie
- Department of Gastroenterology and Hepatology, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital (School of Medicine of South China University of Technology), Guangzhou, People's Republic of China
| | - Rui-Yue Shi
- Department of Gastroenterology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, People's Republic of China
| | - Li-Sheng Wang
- Department of Gastroenterology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, People's Republic of China
| | - Jun Yao
- Department of Gastroenterology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, People's Republic of China
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7
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Karlsen TR, Olsen MB, Kong XY, Yang K, Quiles-Jiménez A, Kroustallaki P, Holm S, Lines GT, Aukrust P, Skarpengland T, Bjørås M, Dahl TB, Nilsen H, Gregersen I, Halvorsen B. NEIL3-deficient bone marrow displays decreased hematopoietic capacity and reduced telomere length. Biochem Biophys Rep 2022; 29:101211. [PMID: 35079641 PMCID: PMC8777121 DOI: 10.1016/j.bbrep.2022.101211] [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: 11/27/2021] [Revised: 01/10/2022] [Accepted: 01/12/2022] [Indexed: 11/24/2022] Open
Abstract
Deficiency of NEIL3, a DNA repair enzyme, has significant impact on mouse physiology, including vascular biology and gut health, processes related to aging. Leukocyte telomere length (LTL) is suggested as a marker of biological aging, and shortened LTL is associated with increased risk of cardiovascular disease. NEIL3 has been shown to repair DNA damage in telomere regions in vitro. Herein, we explored the role of NEIL3 in telomere maintenance in vivo by studying bone marrow cells from atherosclerosis-prone NEIL3-deficient mice. We found shortened telomeres and decreased activity of the telomerase enzyme in bone marrow cells derived from Apoe -/- Neil3 -/- as compared to Apoe -/- mice. Furthermore, Apoe -/- Neil3 -/- mice had decreased leukocyte levels as compared to Apoe -/- mice, both in bone marrow and in peripheral blood. Finally, RNA sequencing of bone marrow cells from Apoe -/- Neil3 -/- and Apoe -/- mice revealed different expression levels of genes involved in cell cycle regulation, cellular senescence and telomere protection. This study points to NEIL3 as a telomere-protecting protein in murine bone marrow in vivo.
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Affiliation(s)
- Tom Rune Karlsen
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Maria B. Olsen
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Xiang Y. Kong
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Kuan Yang
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Ana Quiles-Jiménez
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Penelope Kroustallaki
- Department of Clinical Molecular Biology, University of Oslo and Akershus University Hospital, Lørenskog, Norway
| | - Sverre Holm
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | | | - Pål Aukrust
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Section of Clinical Immunology and Infectious Diseases, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Tonje Skarpengland
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
- Section of Clinical Immunology and Infectious Diseases, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Magnar Bjørås
- Department of Microbiology, Oslo University Hospital Rikshospitalet, Oslo, Norway
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Tuva B. Dahl
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
- Department of Research and Development, Division of Emergencies and Critical Care, Oslo University Hospital HF, Rikshospitalet, Norway
| | - Hilde Nilsen
- Department of Clinical Molecular Biology, University of Oslo and Akershus University Hospital, Lørenskog, Norway
| | - Ida Gregersen
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Bente Halvorsen
- Research Institute of Internal Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
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Li L, Görgens A, Mussack V, Pepeldjiyska E, Hartz AS, Rank A, Schmohl J, Krämer D, Andaloussi SE, Pfaffl MW, Schmetzer H. Description and optimization of a multiplex bead-based flow cytometry method (MBFCM) to characterize extracellular vesicles in serum samples from patients with hematological malignancies. Cancer Gene Ther 2022; 29:1600-1615. [PMID: 35477770 PMCID: PMC9663305 DOI: 10.1038/s41417-022-00466-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 01/25/2022] [Accepted: 03/18/2022] [Indexed: 02/04/2023]
Abstract
Extracellular Vesicles (EVs) are membranous vesicles produced by all cells under physiological and pathological conditions. In hematological malignancies, tumor-derived EVs might reprogram the bone marrow environment, suppress antileukemic immunity, mediate drug resistance and interfere with immunotherapies. EVs collected from the serum of leukemic samples might correlate with disease stage, drug-/immunological resistance, or might correlate with antileukemic immunity/immune response. Special EV surface protein patterns in serum have the potential as noninvasive biomarker candidates to distinguish several disease-related patterns ex vivo or in vivo. EVs were isolated from the serum of acute myeloid leukemia (AML), acute lymphoid leukemia (ALL), chronic lymphoid leukemia (CLL) patients, and healthy volunteers. EVs were characterized by transmission electron microscopy and fluorescence nanoparticle tracking analysis, and EV surface protein profiles were analyzed by multiplex bead-based flow cytometry to identify tumor- or immune system-related EVs of AML, ALL, CLL, and healthy samples. Aiming to provide proof-of-concept evidence and methodology for the potential role of serum-derived EVs as biomarkers in leukemic versus healthy samples in this study, we hope to pave the way for future detection of promising biomarkers for imminent disease progression and the identification of potential targets to be used in a therapeutic strategy.
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Affiliation(s)
- Lin Li
- grid.411095.80000 0004 0477 2585Working-group: Immune-Modulation, Medical Department III, University Hospital of Munich, Munich, Germany
| | - André Görgens
- grid.4714.60000 0004 1937 0626Department of Laboratory Medicine, Division of Biomolecular and Cellular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Veronika Mussack
- grid.6936.a0000000123222966Department of Animal Physiology and Immunology, TUM School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany
| | - Elena Pepeldjiyska
- grid.411095.80000 0004 0477 2585Working-group: Immune-Modulation, Medical Department III, University Hospital of Munich, Munich, Germany
| | - Anne Sophie Hartz
- grid.411095.80000 0004 0477 2585Working-group: Immune-Modulation, Medical Department III, University Hospital of Munich, Munich, Germany
| | - Andreas Rank
- grid.419801.50000 0000 9312 0220Department of Hematology and Oncology, University Hospital of Augsburg, Augsburg, Germany
| | - Jörg Schmohl
- Department of Hematology and Oncology, Hospital of Stuttgart, Stuttgart, Germany
| | - Doris Krämer
- Department of Heamatology, Oncology and Palliative Care, Ameos Klinikum Mitte, Bremerhaven, Germany
| | - Samir El Andaloussi
- grid.4714.60000 0004 1937 0626Department of Laboratory Medicine, Division of Biomolecular and Cellular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Michael W. Pfaffl
- grid.6936.a0000000123222966Department of Animal Physiology and Immunology, TUM School of Life Sciences Weihenstephan, Technical University of Munich, Freising, Germany
| | - Helga Schmetzer
- grid.411095.80000 0004 0477 2585Working-group: Immune-Modulation, Medical Department III, University Hospital of Munich, Munich, Germany
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9
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Danelli L, Cornish G, Merkenschlager J, Kassiotis G. Default polyfunctional T helper 1 response to ample signal 1 alone. Cell Mol Immunol 2021; 18:1809-1822. [PMID: 32313208 PMCID: PMC8245500 DOI: 10.1038/s41423-020-0415-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 03/14/2020] [Indexed: 12/27/2022] Open
Abstract
CD4+ T cells integrate well-defined signals from the T-cell receptor (TCR) (signal 1) and a host of costimulatory molecules (signal 2) to initiate clonal expansion and differentiation into diverse functional T helper (Th) subsets. However, our ability to guide the expansion of context-appropriate Th subsets by deploying these signals in vaccination remains limited. Using cell-based vaccines, we selectively amplified signal 1 by exclusive presentation of an optimized peptide:MHC II (pMHC II) complex in the absence of classic costimulation. Contrary to expectations, amplified signal 1 alone was strongly immunogenic and selectively expanded high-affinity TCR clonotypes, despite delivering intense TCR signals. In contrast to natural infection or standard vaccines, amplified signal 1, presented by a variety of professional and nonprofessional antigen-presenting cells (APCs), induced exclusively polyfunctional Th1 effector and memory cells, which protected against retroviral infection and tumor challenge, and expanded tumor-reactive CD4+ T cells otherwise rendered unresponsive in tumor-bearing hosts. Together, our findings uncover a default Th1 response to ample signal 1 and offer a means to selectively prime such protective responses by vaccination.
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Affiliation(s)
- Luca Danelli
- Retroviral Immunology, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Georgina Cornish
- Retroviral Immunology, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
| | - Julia Merkenschlager
- Retroviral Immunology, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
- Laboratory of Molecular Immunology, The Rockefeller University, New York, NY, 10065, USA
| | - George Kassiotis
- Retroviral Immunology, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK.
- Department of Medicine, Faculty of Medicine, Imperial College London, London, W2 1PG, UK.
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10
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Shen Q, Huang Z, Yao J, Jin Y. Extracellular vesicles-mediated interaction within intestinal microenvironment in inflammatory bowel disease. J Adv Res 2021; 37:221-233. [PMID: 35499059 PMCID: PMC9039646 DOI: 10.1016/j.jare.2021.07.002] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 07/01/2021] [Accepted: 07/05/2021] [Indexed: 12/12/2022] Open
Abstract
EVs derived from different sources play modulatory functions in the intestine, especially interaction associated with microbiota. An EV-mediated interaction system was established to describe the possible mechanism of IBD pathogenesis and its cure. EVs-based treatments show great potential of clinical applications in IBD diagnosis and therapy.
Background The intestinal tract is a complicated ecosystem with dynamic homeostasis via interaction of intestine and microbiota. Inflammatory bowel disease (IBD) is chronic intestinal inflammation involving dysbiosis of intestinal microenvironment. Extracellular vesicles (EVs), as vital characteristics of cell–cell and cell-organism communication, contribute to homeostasis in intestine. Recently, EVs showed excellent potential for clinical applications in disease diagnoses and therapies. Aim of Review Our current review discusses the modulatory functions of EVs derived from different sources in intestine, especially their effects and applications in IBD clinical therapy. EV-mediated interaction systems between host intestine and microbiota were established to describe possible mechanisms of IBD pathogenesis and its cure. Key Scientific Concepts of Review EVs are excellent vehicles for delivering molecules containing genetic information to recipient cells. Multiple pieces of evidence have illustrated that EVs participate the interaction between host and microbiota in intestinal microenvironment. In inflammatory intestine with dysbiosis of microbiota, EVs as regulators target promoting immune response and microbial reconstruction. EVs-based immunotherapy could be a promising therapeutic approach for the treatment of IBD in the near future.
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Affiliation(s)
- Qichen Shen
- Department of Biotechnology, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Zhuizui Huang
- Department of Biotechnology, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jiachen Yao
- Faculty of Technology, University of Turku, Turku 20014, Finland
| | - Yuanxiang Jin
- Department of Biotechnology, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310032, China
- Corresponding author at: 18, Chaowang Road, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China.
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11
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Salem NA, Mahnke AH, Konganti K, Hillhouse AE, Miranda RC. Cell-type and fetal-sex-specific targets of prenatal alcohol exposure in developing mouse cerebral cortex. iScience 2021; 24:102439. [PMID: 33997709 PMCID: PMC8105653 DOI: 10.1016/j.isci.2021.102439] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/07/2021] [Accepted: 04/13/2021] [Indexed: 11/17/2022] Open
Abstract
Prenatal alcohol exposure (PAE) results in cerebral cortical dysgenesis. Single-cell RNA sequencing was performed on murine fetal cerebral cortical cells from six timed pregnancies, to decipher persistent cell- and sex-specific effects of an episode of PAE during early neurogenesis. We found, in an analysis of 38 distinct neural subpopulations across 8 lineage subtypes, that PAE altered neural maturation and cell cycle and disrupted gene co-expression networks. Whereas most differentially regulated genes were inhibited, particularly in females, PAE also induced sex-independent neural expression of fetal hemoglobin, a presumptive epigenetic stress adaptation. PAE inhibited Bcl11a, Htt, Ctnnb1, and other upstream regulators of differentially expressed genes and inhibited several autism-linked genes, suggesting that neurodevelopmental disorders share underlying mechanisms. PAE females exhibited neural loss of X-inactivation, with correlated activation of autosomal genes and evidence for spliceosome dysfunction. Thus, episodic PAE persistently alters the developing neural transcriptome, contributing to sex- and cell-type-specific teratology. The neurogenic murine fetal cortex contains about 33 distinct cell subtypes Prenatal Alcohol Exposure (PAE) resulted in sex-specific alterations in developmental trajectory and cell cycle PAE females exhibited neural loss of X-inactivation and spliceosomal dysfunction PAE induced sex-independent neural expression of fetal hemoglobin gene transcripts
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Affiliation(s)
- Nihal A. Salem
- Department of Neuroscience and Experimental Therapeutics, College of Medicine, Texas A&M University Health Science Center, Medical Research and Education Building, 8447 Riverside Parkway, Bryan, TX 77807-3260, USA
- Texas A&M Institute for Neuroscience, Texas A&M University, College Station, TX, USA
| | - Amanda H. Mahnke
- Department of Neuroscience and Experimental Therapeutics, College of Medicine, Texas A&M University Health Science Center, Medical Research and Education Building, 8447 Riverside Parkway, Bryan, TX 77807-3260, USA
- Women's Health in Neuroscience Program, Texas A&M University Health Science Center, Bryan, TX, USA
| | - Kranti Konganti
- Texas A&M Institute for Genome Sciences and Society, Texas A&M University, College Station, TX 77843, USA
| | - Andrew E. Hillhouse
- Texas A&M Institute for Genome Sciences and Society, Texas A&M University, College Station, TX 77843, USA
| | - Rajesh C. Miranda
- Department of Neuroscience and Experimental Therapeutics, College of Medicine, Texas A&M University Health Science Center, Medical Research and Education Building, 8447 Riverside Parkway, Bryan, TX 77807-3260, USA
- Texas A&M Institute for Neuroscience, Texas A&M University, College Station, TX, USA
- Women's Health in Neuroscience Program, Texas A&M University Health Science Center, Bryan, TX, USA
- Corresponding author
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12
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Song R, Zhai X, Fan X, Ge T, Li M, Cheung AKL, Hao Y, Chen S, Wei L, Ma Y, Fan S, Zhang Y, Chahan B, Guo Q. Recombinant interferon-gamma promotes immunoglobulin G and cytokine memory responses to cathepsin L-like cysteine proteinase of Hyalomma asiaticum and the efficacy of anti-tick. Vet Immunol Immunopathol 2021; 235:110201. [PMID: 33735822 DOI: 10.1016/j.vetimm.2021.110201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/15/2021] [Accepted: 02/02/2021] [Indexed: 11/19/2022]
Abstract
Among bloodsucking arthropods, hard tick is a vector of transmitting the most diverse human and animal pathogens, leading to an increasing number of manifestations worldwide. The development of the anti-tick vaccine has the potential to be an environmentally friendly and cost-effective option for tick management. We have previously demonstrated the induction of both humoral and cellular response against Hyalomma asiaticum (H. asiaticum) following immunization with recombinant cathepsin L-like cysteine protease from H. asiaticum tick (rHasCPL), and could control tick infestations. Interferon-gamma (IFN-γ), is an immunomodulatory factor that plays an important role in the regulation of adaptive immunity against infection. In the present study, recombinant BALB/c mouse IFN-γ (rMus-IFN-γ) was cloned and expressed using a prokaryotic expression system, and verified by Western blotting and IFN-γ-ELISA kit analysis. Female BALB/c mice (n = 12) were used for immunization using rHasCPL (100 μg) plus IFN-γ as adjuvant (10 μg). In immunized female BALB/c mice, the levels of anti-CPL antibodies as well as cytokines were determined using ELISA analysis. Protective efficacy of immunization was evaluated by larvae H. asiaticum challenge of immunized female BALB/c mice. Using rMus-IFN-γ as an adjuvant to rHasCPL vaccine (CPL + IFN-γ) promoted specific antibody IgG (IgG1 > IgG2a) and increased production of IFN-γ and IL-4 compared to immune rHasCPL group (CPL). The protected rate of immunized mice from tick challenge was significantly higher after immunization with CPL + IFN-γ (85.11 %) than with CPL (63.28 %). Immunization using CPL + IFN-γ promoted the activation of anti-HasCPL humoral and cellular immune responses, and could provide better protection against H. asiaticum infestation. This approach may could help develop a candidate vaccine for control tick infestations.
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Affiliation(s)
- Ruiqi Song
- College of Animal Science, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China; Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
| | - Xuejie Zhai
- Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
| | - Xinli Fan
- Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
| | - Ting Ge
- Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
| | - Min Li
- Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
| | - Allen Ka Loon Cheung
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Kowloon Tong, 999077, Hong Kong Special Administrative Region
| | - Yunwei Hao
- Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
| | - Songqin Chen
- Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
| | - Liting Wei
- Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
| | - Ying Ma
- Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
| | - Shilong Fan
- Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
| | - Yang Zhang
- Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China; College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Bayin Chahan
- Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China.
| | - Qingyong Guo
- Parasitology Laboratory, Veterinary College, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China.
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13
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Tilstra JS, John S, Gordon RA, Leibler C, Kashgarian M, Bastacky S, Nickerson KM, Shlomchik MJ. B cell-intrinsic TLR9 expression is protective in murine lupus. J Clin Invest 2020; 130:3172-3187. [PMID: 32191633 PMCID: PMC7260024 DOI: 10.1172/jci132328] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 03/05/2020] [Indexed: 12/26/2022] Open
Abstract
Toll-like receptor 9 (TLR9) is a regulator of disease pathogenesis in systemic lupus erythematosus (SLE). Why TLR9 represses disease while TLR7 and MyD88 have the opposite effect remains undefined. To begin to address this question, we created 2 alleles to manipulate TLR9 expression, allowing for either selective deletion or overexpression. We used these to test cell type-specific effects of Tlr9 expression on the regulation of SLE pathogenesis. Notably, Tlr9 deficiency in B cells was sufficient to exacerbate nephritis while extinguishing anti-nucleosome antibodies, whereas Tlr9 deficiency in dendritic cells (DCs), plasmacytoid DCs, and neutrophils had no discernable effect on disease. Thus, B cell-specific Tlr9 deficiency unlinked disease from autoantibody production. Critically, B cell-specific Tlr9 overexpression resulted in ameliorated nephritis, opposite of the effect of deleting Tlr9. Our findings highlight the nonredundant role of B cell-expressed TLR9 in regulating lupus and suggest therapeutic potential in modulating and perhaps even enhancing TLR9 signals in B cells.
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Affiliation(s)
- Jeremy S. Tilstra
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Shinu John
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Rachael A. Gordon
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Claire Leibler
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Michael Kashgarian
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Sheldon Bastacky
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Kevin M. Nickerson
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Mark J. Shlomchik
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
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14
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Carbone E, De Felice M, Di Rosa F, D'Oro U, Fontana S, La Cava A, Maio M, Matarese G, Racioppi L, Ruggiero G, Terrazzano G. Serafino Zappacosta: An Enlightened Mentor and Educator. Front Immunol 2020; 11:217. [PMID: 32117323 PMCID: PMC7031500 DOI: 10.3389/fimmu.2020.00217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 01/27/2020] [Indexed: 11/22/2022] Open
Abstract
With this article, the authors aim to honor the memory of Serafino Zappacosta, who had been their mentor during the early years of their career in science. The authors discuss how the combination of Serafino Zappacosta's extraordinary commitment to teaching and passion for science created a fostering educational environment that led to the creation of the “Ruggero Ceppellini Advanced School of Immunology.” The review also illustrates how the research on the MHC and the inspirational scientific context in the Zappacosta's laboratory influenced the authors' early scientific interests, and subsequent professional work as immunologists.
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Affiliation(s)
- Ennio Carbone
- Department of Experimental and Clinical Medicine, University "Magna Graecia" of Catanzaro, Catanzaro, Italy.,Department of Microbiology, Cell and Tumor Biology, Karolinska Intitutet, Stockholm, Sweden
| | - Mario De Felice
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale, Consiglio Nazionale delle Ricerche (IEOS-CNR), Naples, Italy
| | - Francesca Di Rosa
- Institute of Molecular Biology and Pathology, Consiglio Nazionale delle Ricerche (IBPM-CNR), Rome, Italy
| | | | - Silvia Fontana
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale, Consiglio Nazionale delle Ricerche (IEOS-CNR), Naples, Italy
| | - Antonio La Cava
- Department of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Michele Maio
- Center for Immuno-Oncology, Medical Oncology and Immunotherapy, Department of Oncology, University Hospital of Siena, Siena, Italy
| | - Giuseppe Matarese
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale, Consiglio Nazionale delle Ricerche (IEOS-CNR), Naples, Italy.,Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", Naples, Italy
| | - Luigi Racioppi
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", Naples, Italy.,Division of Hematological Malignancies and Cellular Therapy, Department of Medicine, Duke University School of Medicine, Durham, NC, United States
| | - Giuseppina Ruggiero
- Dipartimento di Scienze Mediche Traslazionali, Università di Napoli "Federico II", Naples, Italy
| | - Giuseppe Terrazzano
- Dipartimento di Scienze Mediche Traslazionali, Università di Napoli "Federico II", Naples, Italy.,Dipartimento di Scienze, Università della Basilicata, Potenza, Italy
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15
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Extracellular Vesicles with Possible Roles in Gut Intestinal Tract Homeostasis and IBD. Mediators Inflamm 2020; 2020:1945832. [PMID: 32410847 PMCID: PMC7201673 DOI: 10.1155/2020/1945832] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/17/2019] [Accepted: 12/24/2019] [Indexed: 12/17/2022] Open
Abstract
The intestinal tract consists of various types of cells, such as epithelial cells, Paneth cells, macrophages, and lymphocytes, which constitute the intestinal immune system and play a significant role in maintaining intestinal homeostasis by producing antimicrobial materials and controlling the host-commensal balance. Various studies have found that the dysfunction of intestinal homeostasis contributes to the pathogenesis of inflammatory bowel disease (IBD). As a novel mediator, extracellular vesicles (EVs) have been recognized as effective communicators, not only between cells but also between cells and the organism. In recent years, EVs have been regarded as vital characters for dysregulated homeostasis and IBD in either the etiology or the pathology of intestinal inflammation. Here, we review recent studies on EVs associated with intestinal homeostasis and IBD and discuss their source, cargo, and origin, as well as their therapeutic effects on IBD, which mainly include artificial nanoparticles and EVs derived from microorganisms.
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