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Sepahi A, Ho HE, Vyas P, Umiker B, Kis-Toth K, Wiederschain D, Radigan L, Cunningham-Rundles C. ICOS agonist vopratelimab modulates follicular helper T cells and improves B cell function in common variable immunodeficiency. Clin Immunol 2024; 264:110217. [PMID: 38621471 DOI: 10.1016/j.clim.2024.110217] [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: 11/19/2023] [Revised: 03/15/2024] [Accepted: 04/09/2024] [Indexed: 04/17/2024]
Abstract
Common variable immunodeficiency (CVID) is an immune defect characterized by hypogammaglobulinemia and impaired development of B cells into plasma cells. As follicular helper T cells (TFH) play a central role in humoral immunity, we examined TFH cells in CVID, and investigated whether an inducible T cell co-stimulator (ICOS) agonist, vopratelimab, could modulate TFH, B cell interactions and enhance immunoglobulin production. CVID subjects had decreased TFH17 and increased TFH1 subsets; this was associated with increased transitional B cells and decreased IgG+ B and IgD-IgM-CD27+ memory B cells. ICOS expression on CVID CD4+ T cells was also decreased. However, ICOS activation of CD4+ T cells by vopratelimab significantly increased total CVID TFH, TFH2, cell numbers, as well as IL-4, IL-10 and IL-21 secretion in vitro. Vopratelimab treatment also increased plasma cells, IgG+ B cells, reduced naïve & transitional B cells and significantly increased IgG1 secretion by CVID B cells. Interestingly, vopratelimab treatment also restored IgA secretion in PBMCs from several CVID patients who had a complete lack of endogenous serum IgA. Our data demonstrate the potential of TFH modulation in restoring TFH and enhancing B cell maturation in CVID. The effects of an ICOS agonist in antibody defects warrants further investigation. This biologic may also be of therapeutic interest in other clinical settings of antibody deficiency.
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Affiliation(s)
- Ali Sepahi
- PharmaEssentia Innovation Research Center, Bedford, MA, United States; Concentra Biosciences, LLC, Cambridge, MA, United States
| | - Hsi-En Ho
- Department of Medicine, Division of Clinical Immunology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Prapti Vyas
- ReNAgade Therapeutics, Cambridge, MA, United States; Concentra Biosciences, LLC, Cambridge, MA, United States
| | - Benjamin Umiker
- AstraZeneca, Cambridge, MA, United States; Concentra Biosciences, LLC, Cambridge, MA, United States
| | - Katalin Kis-Toth
- NextPoint Therapeutics, Inc., Cambridge, MA, United States; Concentra Biosciences, LLC, Cambridge, MA, United States
| | - Dmitri Wiederschain
- Crossbow Therapeutics, Cambridge, MA, United States; Concentra Biosciences, LLC, Cambridge, MA, United States
| | - Lin Radigan
- Department of Medicine, Division of Clinical Immunology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Charlotte Cunningham-Rundles
- Department of Medicine, Division of Clinical Immunology, Icahn School of Medicine at Mount Sinai, New York, NY, United States.
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2
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Viallard JF, Lescure M, Oksenhendler E, Blanco P, Visentin J, Parrens M. STAT expression and TFH1 cells in CVID granulomatosis and sarcoidosis: immunological and histopathological comparisons. Virchows Arch 2024; 484:481-490. [PMID: 37924346 DOI: 10.1007/s00428-023-03684-6] [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: 07/24/2023] [Revised: 10/10/2023] [Accepted: 10/22/2023] [Indexed: 11/06/2023]
Abstract
Granulomatous disease is a serious complication of common variable immunodeficiency (CVID-GD) that occurs in 8-22% of these patients and can mimic sarcoidosis, with which it shares certain clinical, biological, and radiological features. However, few studies to date have compared the two pathologies immunologically and histologically. Therefore, we analyzed the immunological-histological findings for different tissue samples from ten patients with CVID-GD and compared them to those of biopsy-proven sarcoidosis. Specifically, we wanted to know whether or not the signaling abnormalities observed in sarcoidosis granulomas are also present in CVID-GD. Morphological differences were found between CVID-GD histology and classical sarcoidosis: mainly, the former's notable lymphoid hyperplasia associated with granulomas not observed in the latter. All CVID-GD involved organs contained several follicular helper-T (TFH) cells within the granulomatosis, while those cells were inconstantly and more weakly expressed in sarcoidosis. Moreover, CVID and sarcoidosis granulomas expressed the phosphorylated-signal transducer and activator of transcription (pSTAT)1 and pSTAT3 factors, regardless of the organ studied and without any significant difference between entities. Our results suggest that the macrophage-activation mechanism in CVID resembles that of sarcoidosis, thereby suggesting that Janus kinase (JAK)-STAT-pathway blockade might be useful in currently difficult-to-treat CVID-GD.
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Affiliation(s)
- Jean-François Viallard
- Internal Medicine Department, Hôpital Haut-Lévêque, Bordeaux University Hospital, Avenue de Magellan, 33604, Pessac, France.
| | - Maëlig Lescure
- Internal Medicine Department, Hôpital Haut-Lévêque, Bordeaux University Hospital, Avenue de Magellan, 33604, Pessac, France
| | - Eric Oksenhendler
- Clinical Immunology Department, Saint-Louis Paris Diderot University Hospital, Paris, France
| | - Patrick Blanco
- Centre Hospitalier Universitaire de Bordeaux, Service d'Immunologie Et Immunogénétique FHU ACRONIM, Hôpital Pellegrin, Place Amélie-Raba-Léon, Bordeaux, France
| | - Jonathan Visentin
- Centre Hospitalier Universitaire de Bordeaux, Service d'Immunologie Et Immunogénétique FHU ACRONIM, Hôpital Pellegrin, Place Amélie-Raba-Léon, Bordeaux, France
| | - Marie Parrens
- Pathology Department, Hôpital du Haut-Lévêque, Bordeaux University Hospital, Avenue de Magellan, Pessac, France
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Wang X, Yang T, Shi S, Xu C, Wang F, Dai D, Guan G, Zhang Y, Wang S, Wang J, Zhang B, Liu P, Bai X, Jin Y, Li X, Zhu C, Chen D, Xu Q, Guo Y. Heterogeneity-induced NGF-NGFR communication inefficiency promotes mitotic spindle disorganization in exhausted T cells through PREX1 suppression to impair the anti-tumor immunotherapy with PD-1 mAb in hepatocellular carcinoma. Cancer Med 2024; 13:e6736. [PMID: 38204220 PMCID: PMC10905245 DOI: 10.1002/cam4.6736] [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: 04/22/2023] [Revised: 09/20/2023] [Accepted: 10/20/2023] [Indexed: 01/12/2024] Open
Abstract
BACKGROUND The mechanism of decreased T cells infiltrating tumor tissues in hepatocellular carcinoma is poorly understood. METHODS Cells were separated from the single-cell RNA-sequence dataset of hepatocellular carcinoma patients (GSE149614) for cell-cell communication. Flow cytometry, EDU staining, H3-Ser28 staining, confocal immunofluorescence staining, western blotting and naked microsubcutaneous tumors were performed for the mechanism of NGF-NGFR promoting proliferation. RESULTS The present study has revealed that during the process of T-cell infiltration from adjacent tissues to tumor tissues, an inefficiency in NGF-NGFR communication occurs in the tumor tissues. Importantly, NGF secreted by tumor cells interacts with NGFR present on the membranes of the infiltrated T cells, thereby promoting the proliferation through the activation of mitotic spindle signals. Mechanistically, the mediation of mitotic spindle signal activation promoting proliferation is executed by HDAC1-mediated inhibition of unclear trans-localization of PREX1. Furthermore, PD-1 mAb acts synergistically with the NGF-NGFR communication to suppress tumor progression in both mouse models and HCC patients. Additionally, NGF-NGFR communication was positively correlates with the PD-1/PDL-1 expression. However, expressions of NGF and NGFR are low in tumor tissues, which is responsible for the invasive clinicopathological features and the disappointing prognosis in HCC patients. CONCLUSION Inefficiency in NGF-NGFR communication impairs PD-1 mAb immunotherapy and could thus be utilized as a novel therapeutic target in the treatment of HCC patients in clinical practice.
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Affiliation(s)
- Xin Wang
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Tongwang Yang
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
- Academician WorkstationChangsha Medical UniversityChangshaChina
- Hunan Key Laboratory of the Research and Development of Novel Pharmaceutical PreparationsChangsha Medical UniversityChangshaChina
| | - Shangheng Shi
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Chuanshen Xu
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Feng Wang
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Deshu Dai
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Ge Guan
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Yong Zhang
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Shuxian Wang
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Jianhong Wang
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Bingliang Zhang
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Peng Liu
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Xiaoshuai Bai
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Yan Jin
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Xinqiang Li
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Cunle Zhu
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Dexi Chen
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
- Beijing Institute of HepatologyCapital Medical UniversityBeijingChina
| | - Qingguo Xu
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
- Academician WorkstationChangsha Medical UniversityChangshaChina
| | - Yuan Guo
- Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdaoChina
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4
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Hultberg J, Blixt E, Göransson R, Adolfsson J, Govender M, Larsson M, Nilsdotter-Augustinsson Å, Ernerudh J, Nyström S. In-depth immune profiling reveals advanced B- and T-cell differentiation to be associated with Th1-driven immune dysregulation in common variable immunodeficiency. Clin Immunol 2023; 257:109816. [PMID: 37918468 DOI: 10.1016/j.clim.2023.109816] [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: 06/07/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 11/04/2023]
Abstract
Common variable immunodeficiency (CVID) is an inborn error of immunity characterized by low levels of antibodies. In addition to infections, many patients also suffer from T-helper 1-driven immune dysregulation, which is associated with increased mortality. The aim of this study was to perform in-depth characterization of the T and the B cell compartments in a well-defined cohort of patients affected by CVID and correlate the findings to the level of clinical immune dysregulation. We used mass cytometry, targeted proteomics, flow cytometry and functional assays to delineate the immunological phenotype of 15 CVID-affected patients with different levels of immune dysregulation. Unbiased clustering of T cell mass cytometry data correlated with CVID-related immune dysregulation and plasma protein profiles. Expanded CXCR3+ T-bet-expressing B cells correlated with effector memory CD4+ T cell clusters, and increased plasma levels of CXCR3-ligands. Our findings indicate an interplay between B cells and T cells in CVID-related immune dysregulation and provide a better understanding of the underlying pathological mechanisms.
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Affiliation(s)
- Jonas Hultberg
- Division of Molecular Medicine and Virology, Department of Biomedical and Clinical Sciences, Linköping University, Sweden
| | - Emelie Blixt
- Department of Clinical Immunology and Transfusion Medicine, and Department of Biomedical and Clinical Sciences, Linköping University, Sweden
| | - Robin Göransson
- Department of Clinical Immunology and Transfusion Medicine, and Department of Biomedical and Clinical Sciences, Linköping University, Sweden
| | - Jörgen Adolfsson
- Division of Molecular Medicine and Virology, Department of Biomedical and Clinical Sciences, Linköping University, Sweden
| | - Melissa Govender
- Division of Molecular Medicine and Virology, Department of Biomedical and Clinical Sciences, Linköping University, Sweden
| | - Marie Larsson
- Division of Molecular Medicine and Virology, Department of Biomedical and Clinical Sciences, Linköping University, Sweden
| | - Åsa Nilsdotter-Augustinsson
- Division of Inflammation and Infection, Department of Biomedical and Clinical Sciences, Linköping University, Sweden
| | - Jan Ernerudh
- Department of Clinical Immunology and Transfusion Medicine, and Department of Biomedical and Clinical Sciences, Linköping University, Sweden
| | - Sofia Nyström
- Department of Clinical Immunology and Transfusion Medicine, and Department of Biomedical and Clinical Sciences, Linköping University, Sweden.
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5
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Diao J, Liu H, Cao H, Chen W. The dysfunction of Tfh cells promotes pediatric recurrent respiratory tract infections development by interfering humoral immune responses. Heliyon 2023; 9:e20778. [PMID: 37876425 PMCID: PMC10590952 DOI: 10.1016/j.heliyon.2023.e20778] [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: 05/20/2023] [Revised: 08/06/2023] [Accepted: 10/06/2023] [Indexed: 10/26/2023] Open
Abstract
Recurrent respiratory tract infections (RRTIs) are one of the most common pediatric diseases. Although the pathogenesis of pediatric RRTIs remains unknown, ineffective B cell-dominated humoral immunity has been considered as the core mechanism. During the course of pediatric RRTIs, B cell-dominated humoral immunity has changed from "protector" of respiratory system to "bystander" of respiratory tract infections. Under physiological condition, Tfh cells are essential for B cell-dominated humoral immunity, including regulating GC formation, promoting memory B cell (MB)/plasma cell (PC) differentiation, inducting immunoglobulin (Ig) class switching, and selecting affinity-matured antibodies. However, in disease states, Tfh cells are dysfunctional, which can be reflected by phenotypes and cytokine production. Tfh cell dysfunctions can cause the disorders of B cell-dominated humoral immunity, such as promoting B cell presented apoptosis, abrogating total Ig production, reducing MB/PC populations, and delaying affinity maturation of antigens-specific antibodies. In this review, we focused on the functions of B and Tfh cells in the homeostasis of respiratory system, and specifically discussed the disorders of humoral immunity and aberrant Tfh cell responses in the disease process of pediatric RRTIs. We hoped to provide some clues for the prevention and treatment of pediatric RRTIs.
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Affiliation(s)
- Jun Diao
- Department of Pediatrics, Yueyang Hospital of Chinese Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Huosheng Liu
- Department of Acupuncture and Moxibustion, Jiading Hospital of Traditional Chinese Medicine, Shanghai, 201800, China
| | - Hui Cao
- Department of Liver Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Weibin Chen
- Department of Pediatrics, Yueyang Hospital of Chinese Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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6
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Steiner S, Schwarz T, Corman VM, Jeworowski LM, Bauer S, Drosten C, Scheibenbogen C, Hanitsch LG. Impaired B Cell Recall Memory and Reduced Antibody Avidity but Robust T Cell Response in CVID Patients After COVID-19 Vaccination. J Clin Immunol 2023; 43:869-881. [PMID: 36932291 PMCID: PMC10023009 DOI: 10.1007/s10875-023-01468-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 03/05/2023] [Indexed: 03/19/2023]
Abstract
PURPOSE Humoral and cellular immune responses were described after COVID-19 vaccination in patients with common variable immunodeficiency disorder (CVID). This study aimed to investigate SARS-CoV-2-specific antibody quality and memory function of B cell immunity as well as T cell responses after COVID-19 vaccination in seroresponding and non-responding CVID patients. METHODS We evaluated antibody avidity and applied a memory B cell ELSPOT assay for functional B cell recall memory response to SARS-CoV-2 after COVID-19 vaccination in CVID seroresponders. We comparatively analyzed SARS-CoV-2 spike reactive polyfunctional T cell response and reactive peripheral follicular T helper cells (pTFH) by flow cytometry in seroresponding and non-seroresponding CVID patients. All CVID patients had previously failed to mount a humoral response to pneumococcal conjugate vaccine. RESULTS SARS-CoV-2 spike antibody avidity of seroresponding CVID patients was significantly lower than in healthy controls. Only 30% of seroresponding CVID patients showed a minimal memory B cell recall response in ELISPOT assay. One hundred percent of CVID seroresponders and 83% of non-seroresponders had a detectable polyfunctional T cell response. Induction of antigen-specific CD4+CD154+CD137+CXCR5+ pTFH cells by the COVID-19 vaccine was higher in CVID seroresponder than in non-seroresponder. Levels of pTFH did not correlate with antibody response or avidity. CONCLUSION Reduced avidity and significantly impaired recall memory formation after COVID-19 vaccination in seroresponding CVID patients stress the importance of a more differentiated analysis of humoral immune response in CVID patients. Our observations challenge the clinical implications that follow the binary categorization into seroresponder and non-seroresponder.
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Affiliation(s)
- Sophie Steiner
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität Zu Berlin, Campus Virchow, Augustenburger Platz 1/Südstraße 2, 13353, Berlin, Germany
- Berlin Institute of Health, Berlin, Germany
| | - Tatjana Schwarz
- Berlin Institute of Health, Berlin, Germany
- Institute of Virology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, German Centre for Infection Research (DZIF), Associated Partner, Charitéplatz 1, 13353, Berlin, Germany
| | - Victor M Corman
- Berlin Institute of Health, Berlin, Germany
- Institute of Virology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, German Centre for Infection Research (DZIF), Associated Partner, Charitéplatz 1, 13353, Berlin, Germany
- Labor Berlin-Charité Vivantes GmbH, Berlin, Germany
| | - Lara M Jeworowski
- Berlin Institute of Health, Berlin, Germany
- Institute of Virology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, German Centre for Infection Research (DZIF), Associated Partner, Charitéplatz 1, 13353, Berlin, Germany
| | - Sandra Bauer
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität Zu Berlin, Campus Virchow, Augustenburger Platz 1/Südstraße 2, 13353, Berlin, Germany
- Berlin Institute of Health, Berlin, Germany
| | - Christian Drosten
- Berlin Institute of Health, Berlin, Germany
- Institute of Virology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, German Centre for Infection Research (DZIF), Associated Partner, Charitéplatz 1, 13353, Berlin, Germany
| | - Carmen Scheibenbogen
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität Zu Berlin, Campus Virchow, Augustenburger Platz 1/Südstraße 2, 13353, Berlin, Germany
- Berlin Institute of Health, Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Charitéplatz 1, Berlin, Germany
| | - Leif G Hanitsch
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität Zu Berlin, Campus Virchow, Augustenburger Platz 1/Südstraße 2, 13353, Berlin, Germany.
- Berlin Institute of Health, Berlin, Germany.
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Charitéplatz 1, Berlin, Germany.
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7
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Di Lorenzo B, Pacillo L, Milardi G, Jofra T, Di Cesare S, Gerosa J, Marzinotto I, Zapparoli E, Rivalta B, Cifaldi C, Barzaghi F, Giancotta C, Zangari P, Rapini N, Deodati A, Amodio G, Passerini L, Carrera P, Gregori S, Palma P, Finocchi A, Lampasona V, Cicalese MP, Schiaffini R, Di Matteo G, Merelli I, Barcella M, Aiuti A, Piemonti L, Cancrini C, Fousteri G. Natural history of type 1 diabetes on an immunodysregulatory background with genetic alteration in B-cell activating factor receptor: A case report. Front Immunol 2022; 13:952715. [PMID: 36090979 PMCID: PMC9459137 DOI: 10.3389/fimmu.2022.952715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 08/02/2022] [Indexed: 11/24/2022] Open
Abstract
The immunological events leading to type 1 diabetes (T1D) are complex and heterogeneous, underscoring the necessity to study rare cases to improve our understanding. Here, we report the case of a 16-year-old patient who showed glycosuria during a regular checkup. Upon further evaluation, stage 2 T1D, autoimmune thrombocytopenic purpura (AITP), and common variable immunodeficiency (CVID) were diagnosed. The patient underwent low carb diet, losing > 8 kg, and was placed on Ig replacement therapy. Anti-CD20 monoclonal antibody (Rituximab, RTX) was administered 2 years after diagnosis to treat peripheral polyneuropathy, whereas an atypical mycobacteriosis manifested 4 years after diagnosis and was managed with prolonged antibiotic treatment. In the fifth year of monitoring, the patient progressed to insulin dependency despite ZnT8A autoantibody resolution and IA-2A and GADA autoantibody decline. The patient had low T1D genetic risk score (GRS = 0.22817) and absence of human leukocyte antigen (HLA) DR3/DR4-DQ8. Genetic analysis identified the monoallelic mutation H159Y in TNFRSF13C, a gene encoding B-cell activating factor receptor (BAFFR). Significant reduced blood B-cell numbers and BAFFR levels were observed in line with a dysregulation in BAFF–BAFFR signaling. The elevated frequency of PD-1+ dysfunctional Tfh cells composed predominantly by Th1 phenotype was observed at disease onset and during follow-up. This case report describes a patient progressing to T1D on a BAFFR-mediated immunodysregulatory background, suggesting a role of BAFF–BAFFR signaling in islet-specific tolerance and T1D progression.
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Affiliation(s)
- Biagio Di Lorenzo
- Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy
| | - Lucia Pacillo
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
- Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesú Children’s Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Giulia Milardi
- Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy
| | - Tatiana Jofra
- Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy
| | - Silvia Di Cesare
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Jolanda Gerosa
- Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy
| | - Ilaria Marzinotto
- Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy
| | - Ettore Zapparoli
- Center for Omics Sciences, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milano, Italy
| | - Beatrice Rivalta
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
- Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesú Children’s Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Cristina Cifaldi
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
- Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesú Children’s Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Federica Barzaghi
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
- Pediatric Immunohematology and Bone Marrow Transplantation Unit, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Carmela Giancotta
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
- Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesú Children’s Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Paola Zangari
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
- Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesú Children’s Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Novella Rapini
- Unit of Endocrinology, Bambino Gesù Children’s Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Annalisa Deodati
- Unit of Endocrinology, Bambino Gesù Children’s Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Giada Amodio
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Laura Passerini
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Paola Carrera
- Unit of Genomics for Human Disease Diagnosis and Laboratory of Clinical Molecular Biology, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy
| | - Silvia Gregori
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
| | - Paolo Palma
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
- Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesú Children’s Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Andrea Finocchi
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
- Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesú Children’s Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Vito Lampasona
- Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy
| | - Maria Pia Cicalese
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
- Pediatric Immunohematology and Bone Marrow Transplantation Unit, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
- Faculty of Medicine, University Vita-Salute San Raffaele, Milan, Italy
| | - Riccardo Schiaffini
- Unit of Endocrinology, Bambino Gesù Children’s Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
| | - Gigliola Di Matteo
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Ivan Merelli
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
- Department of Bioinformatics, Institute for Biomedical Technologies National Research Council, Segrate, Italy
| | - Matteo Barcella
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
- Department of Bioinformatics, Institute for Biomedical Technologies National Research Council, Segrate, Italy
| | - Alessandro Aiuti
- San Raffaele Telethon Institute for Gene Therapy (SR-Tiget), Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
- Pediatric Immunohematology and Bone Marrow Transplantation Unit, Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute, Milan, Italy
- Faculty of Medicine, University Vita-Salute San Raffaele, Milan, Italy
- *Correspondence: Alessandro Aiuti, ; Caterina Cancrini, ; Georgia Fousteri, ; Lorenzo Piemonti,
| | - Lorenzo Piemonti
- Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy
- *Correspondence: Alessandro Aiuti, ; Caterina Cancrini, ; Georgia Fousteri, ; Lorenzo Piemonti,
| | - Caterina Cancrini
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
- Academic Department of Pediatrics (DPUO), Research Unit of Clinical Immunology and Vaccinology, Bambino Gesú Children’s Hospital, Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy
- *Correspondence: Alessandro Aiuti, ; Caterina Cancrini, ; Georgia Fousteri, ; Lorenzo Piemonti,
| | - Georgia Fousteri
- Diabetes Research Institute, Istituto di Ricovero e Cura a Carattere Scientifico Ospedale San Raffaele, Milan, Italy
- *Correspondence: Alessandro Aiuti, ; Caterina Cancrini, ; Georgia Fousteri, ; Lorenzo Piemonti,
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