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Garcia-Carmona Y, Fribourg M, Sowa A, Cerutti A, Cunningham-Rundles C. TACI and endogenous APRIL in B cell maturation. Clin Immunol 2023; 253:109689. [PMID: 37422057 PMCID: PMC10528899 DOI: 10.1016/j.clim.2023.109689] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 06/30/2023] [Accepted: 07/01/2023] [Indexed: 07/10/2023]
Abstract
While many of the genes and molecular pathways in the germinal center B cell response which initiate protective antibody production are known, the contributions of individual molecular players in terminal B cell differentiation remain unclear. We have previously investigated how mutations in TACI gene, noted in about 10% of patients with common variable immunodeficiency, impair B cell differentiation and often, lead to lymphoid hyperplasia and autoimmunity. Unlike mouse B cells, human B cells express TACI-L (Long) and TACI-S (Short) isoforms, but only TACI-S promotes terminal B cell differentiation into plasma cells. Here we show that the expression of intracellular TACI-S increases with B cell activation, and colocalizes with BCMA and their ligand, APRIL. We show that the loss of APRIL impairs isotype class switch and leads to distinct metabolic and transcriptional changes. Our studies suggest that intracellular TACI-S and APRIL along with BCMA direct long-term PC differentiation and survival.
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Affiliation(s)
- Yolanda Garcia-Carmona
- Division of Clinical Immunology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York City, NY 10029, USA; Marc and Jennifer Lipschultz Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York City, NY 10029, USA.
| | - Miguel Fribourg
- Division of Nephrology, Department of Medicine, Translational Transplant Research Center, Icahn School of Medicine at Mount Sinai, New York City, NY 10029, USA
| | - Allison Sowa
- Microscopy CoRE and Advanced Bioimaging Center, Icahn School of Medicine at Mount Sinai, New York City, NY 10029, USA
| | - Andrea Cerutti
- Translational Clinical Research Program, Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain; Catalan Institute for Research and Advanced Studies (ICREA), Barcelona, Spain
| | - Charlotte Cunningham-Rundles
- Division of Clinical Immunology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York City, NY 10029, USA; Marc and Jennifer Lipschultz Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York City, NY 10029, USA
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Corrado A, Ramonell RP, Woodruff MC, Tipton C, Wise S, Levy J, DelGaudio J, Kuruvilla ME, Magliocca KR, Tomar D, Garimalla S, Scharer CD, Boss JM, Wu H, Gumber S, Fucile C, Gibson G, Rosenberg A, Sanz I, Lee FEH. Extrafollicular IgD+ B cells generate IgE antibody secreting cells in the nasal mucosa. Mucosal Immunol 2021; 14:1144-1159. [PMID: 34050324 PMCID: PMC8160425 DOI: 10.1038/s41385-021-00410-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 04/05/2021] [Accepted: 04/24/2021] [Indexed: 02/04/2023]
Abstract
Increased IgE is a typical feature of allergic rhinitis. Local class-switch recombination has been intimated but B cell precursors and mechanisms remain elusive. Here we describe the dynamics underlying the generation of IgE-antibody secreting cells (ASC) in human nasal polyps (NP), mucosal tissues rich in ASC without germinal centers (GC). Using VH next generation sequencing, we identified an extrafollicular (EF) mucosal IgD+ naïve-like intermediate B cell population with high connectivity to the mucosal IgE ASC. Mucosal IgD+ B cells, express germline epsilon transcripts and predominantly co-express IgM. However, a small but significant fraction co-express IgG or IgA instead which also show connectivity to ASC IgE. Phenotypically, NP IgD+ B cells display an activated profile and molecular evidence of BCR engagement. Transcriptionally, mucosal IgD+ B cells reveal an intermediate profile between naïve B cells and ASC. Single cell IgE ASC analysis demonstrates lower mutational frequencies relative to IgG, IgA, and IgD ASC consistent with IgE ASC derivation from mucosal IgD+ B cell with low mutational load. In conclusion, we describe a novel mechanism of GC-independent, extrafollicular IgE ASC formation at the nasal mucosa whereby activated IgD+ naïve B cells locally undergo direct and indirect (through IgG and IgA), IgE class switch.
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Affiliation(s)
- Alessia Corrado
- Division of Pulmonary, Allergy, Critical Care & Sleep Medicine, Department of Medicine, Emory University, Atlanta, GA, USA
| | - Richard P Ramonell
- Division of Pulmonary, Allergy, Critical Care & Sleep Medicine, Department of Medicine, Emory University, Atlanta, GA, USA
| | - Matthew C Woodruff
- Division of Rheumatology, Department of Medicine, Emory University, Atlanta, GA, USA
- Lowance Center for Human Immunology Emory University, Atlanta, GA, USA
| | - Christopher Tipton
- Division of Rheumatology, Department of Medicine, Emory University, Atlanta, GA, USA
- Lowance Center for Human Immunology Emory University, Atlanta, GA, USA
| | - Sarah Wise
- Department of Otolaryngology, Emory University, Atlanta, GA, USA
| | - Joshua Levy
- Department of Otolaryngology, Emory University, Atlanta, GA, USA
| | - John DelGaudio
- Department of Otolaryngology, Emory University, Atlanta, GA, USA
| | - Merin E Kuruvilla
- Division of Pulmonary, Allergy, Critical Care & Sleep Medicine, Department of Medicine, Emory University, Atlanta, GA, USA
| | - Kelly R Magliocca
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA, USA
| | - Deepak Tomar
- Division of Rheumatology, Department of Medicine, Emory University, Atlanta, GA, USA
- Lowance Center for Human Immunology Emory University, Atlanta, GA, USA
| | - Swetha Garimalla
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, USA
| | | | - Jeremy M Boss
- Department of Microbiology and Immunology, Emory University, Atlanta, GA, USA
| | - Hao Wu
- Department of Biostatistics and Bioinformatics, Emory University, Atlanta, GA, USA
| | - Sanjeev Gumber
- Yerkes National Primate Research Center, Emory University, Atlanta, GA, USA
| | - Chris Fucile
- Department of Microbiology and Immunology, Informatics Institute, University of Alabama, Birmingham, AL, USA
| | - Greg Gibson
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, USA
| | - Alexander Rosenberg
- Department of Microbiology and Immunology, Informatics Institute, University of Alabama, Birmingham, AL, USA
| | - Iñaki Sanz
- Division of Rheumatology, Department of Medicine, Emory University, Atlanta, GA, USA
- Lowance Center for Human Immunology Emory University, Atlanta, GA, USA
| | - F Eun-Hyung Lee
- Division of Pulmonary, Allergy, Critical Care & Sleep Medicine, Department of Medicine, Emory University, Atlanta, GA, USA.
- Lowance Center for Human Immunology Emory University, Atlanta, GA, USA.
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Ostasov P, Robertson H, Piazza P, Datta A, Apperley J, Houdova L, Lysak D, Holubova M, Tesarova K, Caputo VS, Barozzi I. Evolution of Advanced Chronic Lymphoid Leukemia Unveiled by Single-Cell Transcriptomics: A Case Report. Front Oncol 2020; 10:584607. [PMID: 33194728 PMCID: PMC7664833 DOI: 10.3389/fonc.2020.584607] [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: 07/17/2020] [Accepted: 10/05/2020] [Indexed: 11/18/2022] Open
Abstract
Genetic and transcriptional heterogeneity of Chronic lymphocytic leukaemia (CLL) limits prevention of disease progression. Longitudinal single-cell transcriptomics represents the state-of-the-art method to profile the disease heterogeneity at diagnosis and to inform about disease evolution. Here, we apply single-cell RNA-seq to a CLL case, sampled at diagnosis and relapse, that was treated with FCR (Fludarabine, Cyclophosphamide, Rituximab) and underwent a dramatic decrease in CD19 expression during disease progression. Computational analyses revealed a major switch in clones’ dominance during treatment. The clone that expanded at relapse showed 17p and 3p chromosomal deletions, and up-regulation of pathways related to motility, cytokine signaling and antigen presentation. Single-cell RNA-seq uniquely revealed that this clone was already present at low frequency at diagnosis, and it displays feature of plasma cell differentiation, consistent with a more aggressive phenotype. This study shows the benefit of single-cell profiling of CLL heterogeneity at diagnosis, to identify clones that might otherwise not be recognized and to determine the best treatment options.
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Affiliation(s)
- Pavel Ostasov
- Laboratory of Tumor Biology and Immunotherapy, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czechia.,Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Henry Robertson
- Imperial BRC Genomics Facility, Imperial College London, London, United Kingdom
| | - Paolo Piazza
- Imperial BRC Genomics Facility, Imperial College London, London, United Kingdom
| | - Avik Datta
- Imperial BRC Genomics Facility, Imperial College London, London, United Kingdom
| | - Jane Apperley
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Lucie Houdova
- NTIS, Faculty of Applied Science, University of West Bohemia, Pilsen, Czechia
| | - Daniel Lysak
- Department of Haematology and Oncology, University Hospital Pilsen, Pilsen, Czechia
| | - Monika Holubova
- Laboratory of Tumor Biology and Immunotherapy, Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Pilsen, Czechia.,Department of Haematology and Oncology, University Hospital Pilsen, Pilsen, Czechia
| | - Katerina Tesarova
- Faculty of Medicine in Pilsen, Institute of Medical Genetics, Charles University in Prague and Faculty Hospital, Pilsen, Czechia
| | - Valentina S Caputo
- Hugh & Josseline Langmuir Centre for Myeloma Research, Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, London, United Kingdom
| | - Iros Barozzi
- Department of Surgery and Cancer, Imperial College London, London, United Kingdom
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