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Deobagkar-Lele M, Crawford G, Crockford TL, Back J, Hodgson R, Bhandari A, Bull KR, Cornall RJ. B cells require DOCK8 to elicit and integrate T cell help when antigen is limiting. Sci Immunol 2024; 9:eadd4874. [PMID: 39121196 PMCID: PMC7616390 DOI: 10.1126/sciimmunol.add4874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 10/01/2023] [Accepted: 07/12/2024] [Indexed: 08/11/2024]
Abstract
Dedicator of cytokinesis 8 (DOCK8) immunodeficiency syndrome is characterized by a failure of the germinal center response, a process involving the proliferation and positive selection of antigen-specific B cells. Here, we describe how DOCK8-deficient B cells are blocked at a light-zone checkpoint in the germinal centers of immunized mice, where they are unable to respond to T cell-dependent survival and selection signals and consequently differentiate into plasma cells or memory B cells. Although DOCK8-deficient B cells can acquire and present antigen to initiate activation of cognate T cells, integrin up-regulation, B cell-T cell conjugate formation, and costimulation are insufficient for sustained B cell and T cell activation when antigen availability is limited. Our findings provide an explanation for the failure of the humoral response in DOCK8 immunodeficiency syndrome and insight into how the level of available antigen modulates B cell-T cell cross-talk to fine-tune humoral immune responses and immunological memory.
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Affiliation(s)
- Mukta Deobagkar-Lele
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Nuffield Department of Medicine, University of Oxford, Oxford
- Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford
| | - Greg Crawford
- Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford
| | - Tanya L. Crockford
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Nuffield Department of Medicine, University of Oxford, Oxford
- Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford
| | - Jennifer Back
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Nuffield Department of Medicine, University of Oxford, Oxford
- Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford
| | - Rose Hodgson
- Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford
| | - Aneesha Bhandari
- Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford
| | - Katherine R Bull
- Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford
- CAMS-Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford
- Oxford Kidney Unit, Oxford University Hospitals Trust, Oxford
| | - Richard J. Cornall
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, Nuffield Department of Medicine, University of Oxford, Oxford
- Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford
- CAMS-Oxford Institute, Nuffield Department of Medicine, University of Oxford, Oxford
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2
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Ner-Gaon H, Peleg R, Gazit R, Reiner-Benaim A, Shay T. Mapping the splicing landscape of the human immune system. Front Immunol 2023; 14:1116392. [PMID: 37711610 PMCID: PMC10499523 DOI: 10.3389/fimmu.2023.1116392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 08/14/2023] [Indexed: 09/16/2023] Open
Abstract
Most human genes code for more than one transcript. Different ratios of transcripts of the same gene can be found in different cell types or states, indicating differential use of transcription start sites or differential splicing. Such differential transcript use (DTUs) events provide an additional layer of regulation and protein diversity. With the exceptions of PTPRC and CIITA, there are very few reported cases of DTU events in the immune system. To rigorously map DTUs between different human immune cell types, we leveraged four publicly available RNA sequencing datasets. We identified 282 DTU events between five human healthy immune cell types that appear in at least two datasets. The patterns of the DTU events were mostly cell-type-specific or lineage-specific, in the context of the five cell types tested. DTUs correlated with the expression pattern of potential regulators, namely, splicing factors and transcription factors. Of the several immune related conditions studied, only sepsis affected the splicing of more than a few genes and only in innate immune cells. Taken together, we map the DTUs landscape in human peripheral blood immune cell types, and present hundreds of genes whose transcript use changes between cell types or upon activation.
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Affiliation(s)
- Hadas Ner-Gaon
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ronnie Peleg
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Roi Gazit
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Anat Reiner-Benaim
- Department of Epidemiology, Biostatistics and Community Health Sciences, School of Public Health, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Tal Shay
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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3
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Randall KL, Flesch IEA, Mei Y, Miosge LA, Aye R, Yu Z, Domaschenz H, Hollett NA, Russell TA, Stefanovic T, Wong YC, Goodnow CC, Bertram EM, Enders A, Tscharke DC. DOCK2-deficiency causes defects in anti-viral T cell responses and poor control of herpes simplex virus infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.02.551154. [PMID: 37577614 PMCID: PMC10418165 DOI: 10.1101/2023.08.02.551154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
The expanding number of rare immunodeficiency syndromes offers an opportunity to understand key genes that support immune defence against infectious diseases. However, patients with these diseases are by definition rare. In addition, any analysis is complicated by treatments and co-morbid infections requiring the use of mouse models for detailed investigations. Here we develop a mouse model of DOCK2 immunodeficiency and demonstrate that these mice have delayed clearance of herpes simplex virus type 1 (HSV-1) infections. Further, we found that they have a critical, cell intrinsic role of DOCK2 in the clonal expansion of anti-viral CD8+ T cells despite normal early activation of these cells. Finally, while the major deficiency is in clonal expansion, the ability of primed and expanded DOCK2-deficient CD8+ T cells to protect against HSV-1-infection is also compromised. These results provide a contributing cause for the frequent and devastating viral infections seen in DOCK2-deficient patients and improve our understanding of anti-viral CD8+ T cell immunity.
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Affiliation(s)
- Katrina L Randall
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
- School of Medicine and Psychology, Australian National University, Canberra ACT 2600
| | - Inge E A Flesch
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
| | - Yan Mei
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
| | - Lisa A Miosge
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
| | - Racheal Aye
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
| | - Zhijia Yu
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
| | - Heather Domaschenz
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
| | - Natasha A Hollett
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
| | - Tiffany A Russell
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
| | - Tijana Stefanovic
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
| | - Yik Chun Wong
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
| | - Christopher C Goodnow
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
- Garvan Institute of Medical Research, University of New South Wales, Darlinghurst, NSW 2010, Australia
| | - Edward M Bertram
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
| | - Anselm Enders
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
| | - David C Tscharke
- Division of Immunology and Infectious Diseases, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601
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4
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Ye X, Quan X, Guo X, Wang Z, Wu H. Idiopathic non-cirrhotic portal hypertension in a patient with Talaromyces marneffei infection: a case report. BMC Infect Dis 2023; 23:125. [PMID: 36859274 PMCID: PMC9979503 DOI: 10.1186/s12879-023-08090-6] [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: 07/01/2022] [Accepted: 02/16/2023] [Indexed: 03/03/2023] Open
Abstract
BACKGROUND The etiopathogenesis of idiopathic non-cirrhotic portal hypertension (INCPH) is so far poorly understood. Altered immunity, blood diseases, infections, congenital defects and drug exposure have been documented in a part of patients with INCPH owing to increased recognition of the disorder in patients with HIV, or various haematological disorders or autoimmune diseases. We aim to discuss the possible etiopathogenesis of INCPH. CASE PRESENTATION We reported that a patient with intestinal infection of T. Marneffei and hyper-IgE syndrome, a group of rare primary immunodeficiency disorders, was finally diagnosed with INCPH for gastroesophageal variceal bleeding. The diagnosis was mainly based on histopathological features. Transjugular intrahepatic portosystemic shunt was performed and there was no recurrence of melena during the six-month follow-up. CONCLUSION In the context of immunodeficiency, INCPH may associated with intestinal infections. Thus, screening for enterogenic infection and immunological disorders in patients with unexplained portal hypertension is necessary.
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Affiliation(s)
- Xiuling Ye
- grid.13291.380000 0001 0807 1581Department of Gastroenterology, West China Hospital, Sichuan University, No. 37, Guo Xue Xiang, Chengdu, 610041 People’s Republic of China
| | - Xin Quan
- grid.13291.380000 0001 0807 1581Department of Gastroenterology, West China Hospital, Sichuan University, No. 37, Guo Xue Xiang, Chengdu, 610041 People’s Republic of China
| | - Xu Guo
- grid.13291.380000 0001 0807 1581Department of Gastroenterology, West China Hospital, Sichuan University, No. 37, Guo Xue Xiang, Chengdu, 610041 People’s Republic of China
| | - Zhidong Wang
- grid.13291.380000 0001 0807 1581Department of Gastroenterology, West China Hospital, Sichuan University, No. 37, Guo Xue Xiang, Chengdu, 610041 People’s Republic of China
| | - Hao Wu
- Department of Gastroenterology, West China Hospital, Sichuan University, No. 37, Guo Xue Xiang, Chengdu, 610041, People's Republic of China.
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5
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Zhang L, Cao Y, Dai X, Zhang X. Deciphering the role of DOCK8 in tumorigenesis by regulating immunity and the application of nanotechnology in DOCK8 deficiency therapy. Front Pharmacol 2022; 13:1065029. [PMID: 36386145 PMCID: PMC9664064 DOI: 10.3389/fphar.2022.1065029] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022] Open
Abstract
The dedicator of cytokinesis 8 (DOCK8) immunodeficiency syndrome is a severe immune disorder and characterized by serum IgE levels elevation, fungal and viral infections, dermatitis and food allergies. It was well known that DOCK8 is crucial for the survival and function of multiple immune related cells. However, the critical role of DOCK8 on tumorigenesis through regulating immunity is poorly investigated. Accumulating evidences indicated that DOCK8 could affect tumorigenesis by regulating the immunity through immune cells, including NK cells, T cells, B cells and dendritic cells. Here, we summarized and discussed the critical role of DOCK8 in cytoskeleton reconstruction, CD4+ T cell differentiation, immune synaptic formation, tumor immune infiltration, tumor immune surveillance and tumorigenesis. Furthermore, the potential roles of nanotechnology in improving the hematopoietic stem cell transplantation-based therapy for DOCK8 deficiency diseases are also highlighted and discussed.
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Affiliation(s)
- Longhui Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital of Jilin University, Changchun, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital of Jilin University, Changchun, China
| | - Yang Cao
- Clinical Laboratory, The Eastern Division of the First Hospital, Jilin University, Changchun, China
| | - Xiangpeng Dai
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital of Jilin University, Changchun, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital of Jilin University, Changchun, China
| | - Xiaoling Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, First Hospital of Jilin University, Changchun, China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease, First Hospital of Jilin University, Changchun, China
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6
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Ravendran S, Hernández SS, König S, Bak RO. CRISPR/Cas-Based Gene Editing Strategies for DOCK8 Immunodeficiency Syndrome. Front Genome Ed 2022; 4:793010. [PMID: 35373187 PMCID: PMC8969908 DOI: 10.3389/fgeed.2022.793010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 02/14/2022] [Indexed: 12/17/2022] Open
Abstract
Defects in the DOCK8 gene causes combined immunodeficiency termed DOCK8 immunodeficiency syndrome (DIDS). DIDS previously belonged to the disease category of autosomal recessive hyper IgE syndrome (AR-HIES) but is now classified as a combined immunodeficiency (CID). This genetic disorder induces early onset of susceptibility to severe recurrent viral and bacterial infections, atopic diseases and malignancy resulting in high morbidity and mortality. This pathological state arises from impairment of actin polymerization and cytoskeletal rearrangement, which induces improper immune cell migration-, survival-, and effector functions. Owing to the severity of the disease, early allogenic hematopoietic stem cell transplantation is recommended even though it is associated with risk of unintended adverse effects, the need for compatible donors, and high expenses. So far, no alternative therapies have been developed, but the monogenic recessive nature of the disease suggests that gene therapy may be applied. The advent of the CRISPR/Cas gene editing system heralds a new era of possibilities in precision gene therapy, and positive results from clinical trials have already suggested that the tool may provide definitive cures for several genetic disorders. Here, we discuss the potential application of different CRISPR/Cas-mediated genetic therapies to correct the DOCK8 gene. Our findings encourage the pursuit of CRISPR/Cas-based gene editing approaches, which may constitute more precise, affordable, and low-risk definitive treatment options for DOCK8 deficiency.
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Affiliation(s)
| | | | | | - Rasmus O. Bak
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
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7
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Baranek T, Lebrigand K, de Amat Herbozo C, Gonzalez L, Bogard G, Dietrich C, Magnone V, Boisseau C, Jouan Y, Trottein F, Si-Tahar M, Leite-de-Moraes M, Mallevaey T, Paget C. High Dimensional Single-Cell Analysis Reveals iNKT Cell Developmental Trajectories and Effector Fate Decision. Cell Rep 2021; 32:108116. [PMID: 32905761 DOI: 10.1016/j.celrep.2020.108116] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/24/2020] [Accepted: 08/17/2020] [Indexed: 02/02/2023] Open
Abstract
CD1d-restricted invariant Natural Killer T (iNKT) cells represent a unique class of T lymphocytes endowed with potent regulatory and effector immune functions. Although these functions are acquired during thymic ontogeny, the sequence of events that gives rise to discrete effector subsets remains unclear. Using an unbiased single-cell transcriptomic analysis combined with functional assays, we reveal an unappreciated diversity among thymic iNKT cells, especially among iNKT1 cells. Mathematical modeling and biological methods unravel a developmental map whereby iNKT2 cells constitute a transient branching point toward the generation of iNKT1 and iNKT17 cells, which reconciles the two previously proposed models. In addition, we identify the transcription co-factor Four-and-a-half LIM domains protein 2 (FHL2) as a critical cell-intrinsic regulator of iNKT1 specification. Thus, these data illustrate the changing transcriptional network that guides iNKT cell effector fate.
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Affiliation(s)
- Thomas Baranek
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université de Tours, Faculté de Médecine de Tours, Tours, France.
| | - Kevin Lebrigand
- Université Côte d'Azur, CNRS, IPMC, Sophia-Antipolis, France
| | | | - Loïc Gonzalez
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université de Tours, Faculté de Médecine de Tours, Tours, France
| | - Gemma Bogard
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université de Tours, Faculté de Médecine de Tours, Tours, France
| | - Céline Dietrich
- Université de Paris, Paris, France; Laboratory of Immunoregulation and Immunopathology, INEM (Institut Necker-Enfants Malades), CNRS UMR8253 and INSERM UMR1151, Paris, France
| | | | - Chloé Boisseau
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université de Tours, Faculté de Médecine de Tours, Tours, France
| | - Youenn Jouan
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université de Tours, Faculté de Médecine de Tours, Tours, France; Service de Médecine Intensive et Réanimation, Centre Hospitalier Régional Universitaire, Tours, France
| | - François Trottein
- Centre d'Infection et d'Immunité de Lille, Inserm U1019, CNRS UMR 9017, University of Lille, CHU Lille- Institut Pasteur de Lille, 59000 Lille, France
| | - Mustapha Si-Tahar
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université de Tours, Faculté de Médecine de Tours, Tours, France
| | - Maria Leite-de-Moraes
- Université de Paris, Paris, France; Laboratory of Immunoregulation and Immunopathology, INEM (Institut Necker-Enfants Malades), CNRS UMR8253 and INSERM UMR1151, Paris, France
| | - Thierry Mallevaey
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada; Institute of Biomaterials & Biomedical Engineering, Toronto, ON M5S 1A8, Canada
| | - Christophe Paget
- INSERM, Centre d'Etude des Pathologies Respiratoires (CEPR), UMR 1100, Tours, France; Université de Tours, Faculté de Médecine de Tours, Tours, France.
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8
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Seo E, Lee BH, Lee JH, Park YS, Im HJ, Lee J. Hematopoietic stem cell transplantation in an infant with dedicator of cytokinesis 8 (DOCK8) deficiency associated with systemic lupus erythematosus: A case report. Medicine (Baltimore) 2021; 100:e20866. [PMID: 33787566 PMCID: PMC8021304 DOI: 10.1097/md.0000000000020866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 05/21/2020] [Indexed: 01/04/2023] Open
Abstract
INTRODUCTION DOCK8 deficiency is a primary immunodeficiency characterized by recurrent infections, severe allergic disease, and autoimmunity. Here, we report a patient with DOCK8 deficiency that was initially presented as systemic lupus erythematosus (SLE) without recurrent infections and treated with hematopoietic stem cell transplantation (HSCT). PATIENT CONCERNS A 16-month-old boy with a previous history of eczema developed high fever and hand and foot swelling. Over time, multiple purpura, oral ulcers, and oliguria developed with a persistent fever. His laboratory findings showed anemia, thrombocytopenia, and coagulopathy with a high level of C-reactive protein (CRP). No definite pathogens were identified. The complement fractions C3, C4, and CH50 were low. Autoantibodies including antinuclear antibody (ANA) and anti-ds DNA antibody were positive. He definitively satisfied the 2015 ACR/SLICC revised criteria for the diagnosis of SLE (7 points out of 16); therefore, he was treated with a steroid. Lupus nephritis was confirmed by renal biopsy later. Considering the early-onset SLE, partial exome sequencing was performed. DIAGNOSIS One heterozygous missense variant, c.5536A>G (p.Lys1846Glu), which was inherited from his father, and heterozygous deletion of exon 1 to 8 inherited from his mother were found. Through the results of the genetic testing, the patient was confirmed to have DOCK8 deficiency. INTERVENTIONS At the age of 28 months, he received haploidentical HSCT from his mother as a donor. OUTCOMES Laboratory findings including complement fractions C3, C4, CH50, anti-ds DNA antibody, and the ANA became normal after HSCT. Currently, at 12 months post-HSCT, he is doing well, without any autoimmune features or infections. CONCLUSIONS DOCK8 deficiency can be presented as autoimmune disease such as SLE. Encountering a child diagnosed with SLE at a very young age, pediatricians should consider immunodeficiency syndrome including DOCK8 deficiency.
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Affiliation(s)
- Euri Seo
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul
- Department of Pediatrics, Dongguk University Ilsan Hospital, Goyang, Korea
| | - Beom Hee Lee
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul
| | - Joo Hoon Lee
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul
| | - Young Seo Park
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul
| | - Ho Joon Im
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul
| | - Jina Lee
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul
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9
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Pillay BA, Fusaro M, Gray PE, Statham AL, Burnett L, Bezrodnik L, Kane A, Tong W, Abdo C, Winter S, Chevalier S, Levy R, Masson C, Schmitt Y, Bole C, Malphettes M, Macintyre E, De Villartay JP, Ziegler JB, Smart JM, Peake J, Aghamohammadi A, Hammarström L, Abolhassani H, Picard C, Fischer A, Latour S, Neven B, Tangye SG, Ma CS. Somatic reversion of pathogenic DOCK8 variants alters lymphocyte differentiation and function to effectively cure DOCK8 deficiency. J Clin Invest 2021; 131:142434. [PMID: 33290277 DOI: 10.1172/jci142434] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 12/01/2020] [Indexed: 01/10/2023] Open
Abstract
Inborn errors of immunity cause monogenic immune dysregulatory conditions such as severe and recurrent pathogen infection, inflammation, allergy, and malignancy. Somatic reversion refers to the spontaneous repair of a pathogenic germline genetic variant and has been reported to occur in a number of inborn errors of immunity, with a range of impacts on clinical outcomes of these conditions. DOCK8 deficiency due to biallelic inactivating mutations in DOCK8 causes a combined immunodeficiency characterized by severe bacterial, viral, and fungal infections, as well as allergic disease and some cancers. Here, we describe the clinical, genetic, and cellular features of 3 patients with biallelic DOCK8 variants who, following somatic reversion in multiple lymphocyte subsets, exhibited improved clinical features, including complete resolution of infection and allergic disease, and cure over time. Acquisition of DOCK8 expression restored defective lymphocyte signalling, survival and proliferation, as well as CD8+ T cell cytotoxicity, CD4+ T cell cytokine production, and memory B cell generation compared with typical DOCK8-deficient patients. Our temporal analysis of DOCK8-revertant and DOCK8-deficient cells within the same individual established mechanisms of clinical improvement in these patients following somatic reversion and revealed further nonredundant functions of DOCK8 in human lymphocyte biology. Last, our findings have significant implications for future therapeutic options for the treatment of DOCK8 deficiency.
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Affiliation(s)
- Bethany A Pillay
- Garvan Institute of Medical Research, Sydney, New South Wales, Australia.,St Vincent's Clinical School, Faculty of Medicine, University of New South Wales (UNSW) Sydney, New South Wales, Australia
| | - Mathieu Fusaro
- Paris University, Imagine Institute, Université de Paris, Paris, France.,Study Center for Primary Immunodeficiencies, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France.,Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, INSERM UMR 1163, Imagine Institut, Paris, France
| | - Paul E Gray
- Department of Immunology and Infectious Diseases, Sydney Children's Hospital, Sydney, Australia.,School of Women's and Children's Health, UNSW Sydney, New South Wales, Australia.,Clinical Immunogenomics Research Consortia of Australasia, Sydney, New South Wales, Australia
| | - Aaron L Statham
- Garvan Institute of Medical Research, Sydney, New South Wales, Australia
| | - Leslie Burnett
- Garvan Institute of Medical Research, Sydney, New South Wales, Australia.,St Vincent's Clinical School, Faculty of Medicine, University of New South Wales (UNSW) Sydney, New South Wales, Australia.,Clinical Immunogenomics Research Consortia of Australasia, Sydney, New South Wales, Australia
| | - Liliana Bezrodnik
- Clinical Immunology Center and Immunology Unit, Ricardo Gutiérrez Children Hospital, Ciudad Autónoma de Buenos Aires, Argentina
| | - Alisa Kane
- Garvan Institute of Medical Research, Sydney, New South Wales, Australia.,St Vincent's Clinical School, Faculty of Medicine, University of New South Wales (UNSW) Sydney, New South Wales, Australia.,Clinical Immunogenomics Research Consortia of Australasia, Sydney, New South Wales, Australia.,South Western Sydney Clinical School, Faculty of Medicine, UNSW Sydney, New South Wales, Australia.,HIV and Immunology Unit, St Vincent's Hospital, Sydney, Australia.,Department of Immunology, Allergy and HIV, Liverpool Hospital, Liverpool, Sydney, Australia
| | - Winnie Tong
- Clinical Immunogenomics Research Consortia of Australasia, Sydney, New South Wales, Australia.,HIV and Immunology Unit, St Vincent's Hospital, Sydney, Australia
| | - Chrystelle Abdo
- Biological Onco-hematology, Université de Paris, AP-HP and INEM, Paris, France
| | - Sarah Winter
- Paris University, Imagine Institute, Université de Paris, Paris, France.,Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, INSERM UMR 1163, Imagine Institut, Paris, France.,Pediatric Hematology and Immunology Unit, AP-HP, Paris, France
| | - Samuel Chevalier
- Study Center for Primary Immunodeficiencies, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Romain Levy
- Paris University, Imagine Institute, Université de Paris, Paris, France.,Pediatric Hematology and Immunology Unit, AP-HP, Paris, France.,Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM UMR 1163, Paris, France
| | - Cécile Masson
- Paris University, Imagine Institute, Université de Paris, Paris, France.,Imagine Institute, Bioinformatics Platform, INSERM UMR 1163, Paris, France
| | - Yohann Schmitt
- Paris University, Imagine Institute, Université de Paris, Paris, France.,Genomic Core Facility, INSERM UMR 1163, Imagine Institute, Paris, France.,INSERM US24/CNRS UMS3633, Paris, France
| | - Christine Bole
- Genomic Core Facility, INSERM UMR 1163, Imagine Institute, Paris, France
| | - Marion Malphettes
- Immuno-Pathologie Clinique, AP-HP, Hôpital Saint-Louis, Paris, France
| | - Elizabeth Macintyre
- Biological Onco-hematology, Université de Paris, AP-HP and INEM, Paris, France
| | | | - John B Ziegler
- Department of Immunology and Infectious Diseases, Sydney Children's Hospital, Sydney, Australia.,School of Women's and Children's Health, UNSW Sydney, New South Wales, Australia.,Clinical Immunogenomics Research Consortia of Australasia, Sydney, New South Wales, Australia
| | | | - Jane Peake
- Queensland Children's Hospital and University of Queensland, South Brisbane, Australia
| | - Asghar Aghamohammadi
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Lennart Hammarström
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska University Hospital Huddinge, Karolinska Institute, Stockholm, Sweden
| | - Hassan Abolhassani
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.,Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska University Hospital Huddinge, Karolinska Institute, Stockholm, Sweden
| | - Capucine Picard
- Paris University, Imagine Institute, Université de Paris, Paris, France.,Study Center for Primary Immunodeficiencies, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France.,Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, INSERM UMR 1163, Imagine Institut, Paris, France.,Pediatric Hematology and Immunology Unit, AP-HP, Paris, France
| | - Alain Fischer
- Paris University, Imagine Institute, Université de Paris, Paris, France.,Pediatric Hematology and Immunology Unit, AP-HP, Paris, France.,Collège de France, Paris, France.,Imagine Institute, INSERM UMR 1163, Paris, France
| | - Sylvain Latour
- Laboratory of Lymphocyte Activation and Susceptibility to EBV infection, INSERM UMR 1163, Imagine Institut, Paris, France
| | - Benedicte Neven
- Pediatric Hematology and Immunology Unit, AP-HP, Paris, France.,Université de Paris, Imagine Institute Laboratory of Immunogenetics of Pediatric Autoimmune Diseases, INSERM UMR 1163, Paris, France
| | - Stuart G Tangye
- Garvan Institute of Medical Research, Sydney, New South Wales, Australia.,St Vincent's Clinical School, Faculty of Medicine, University of New South Wales (UNSW) Sydney, New South Wales, Australia.,Clinical Immunogenomics Research Consortia of Australasia, Sydney, New South Wales, Australia
| | - Cindy S Ma
- Garvan Institute of Medical Research, Sydney, New South Wales, Australia.,St Vincent's Clinical School, Faculty of Medicine, University of New South Wales (UNSW) Sydney, New South Wales, Australia.,Clinical Immunogenomics Research Consortia of Australasia, Sydney, New South Wales, Australia
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10
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[Diffuse large B-cell lymphoma in a patient with hyper-IgE syndrome: a case report and literature review]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2021; 41:865-868. [PMID: 33190447 PMCID: PMC7656068 DOI: 10.3760/cma.j.issn.0253-2727.2020.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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11
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Randall KL, Law HD, Ziolkowski AF, Wirasinha RC, Goodnow CC, Daley SR. DOCK8 deficiency diminishes thymic T-regulatory cell development but not thymic deletion. Clin Transl Immunology 2021; 10:e1236. [PMID: 33437483 PMCID: PMC7790591 DOI: 10.1002/cti2.1236] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/16/2020] [Accepted: 12/16/2020] [Indexed: 01/02/2023] Open
Abstract
Objective To define the effect of DOCK8 deficiency on thymic tolerance in mice. Methods Thymocytes from wild‐type (Dock8+/+) and DOCK8‐deficient (Dock8pri/pri) mice were examined by flow cytometry. Some mice had transgenic expression of the BCL2 anti‐apoptotic protein in haemopoietic cells. Some mice expressed the transgenic 3A9 T‐cell receptor (TCR), which triggers thymocyte deletion in mice also expressing hen egg lysozyme under the insulin promoter. Results In Dock8pr/pri mice, the proportion of thymocytes induced to acquire tolerance at the immature CCR7− stage was normal. Deletion of strongly self‐reactive CD4+ thymocytes occurred efficiently in Dock8pri/pri mice in a TCR‐transgenic model that requires self‐antigen transfer from epithelial cells to bone marrow (BM)‐derived antigen‐presenting cells. Thymic Foxp3+ T‐regulatory cells (TREG) and Helios+ Foxp3− TREG precursors were decreased in Dock8pri/pri mice, including when apoptosis was inhibited by BCL2 transgene expression. Dock8pri/pri thymic TREG expressed CD25 and CTLA‐4 at normal levels. The results suggest that DOCK8 deficiency does not affect the function of BM‐derived antigen‐presenting cells in the thymus, the TCR self‐reactivity threshold that activates tolerance mechanisms in thymocytes or the apoptotic deletion of these thymocytes. However, DOCK8 is required to prevent a subset of developing TREG cells from undergoing cell death via a mechanism that is distinct from apoptosis. Conclusion DOCK8 deficiency diminishes TREG development in the thymus without compromising thymocyte deletion.
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Affiliation(s)
- Katrina L Randall
- Department of Immunology and Infectious Diseases The John Curtin School of Medical Research The Australian National University Canberra ACT Australia.,Australian National University Medical School The Australian National University Canberra ACT Australia
| | - Hsei Di Law
- Department of Immunology and Infectious Diseases The John Curtin School of Medical Research The Australian National University Canberra ACT Australia
| | - Andrew F Ziolkowski
- Department of Immunology and Infectious Diseases The John Curtin School of Medical Research The Australian National University Canberra ACT Australia
| | - Rushika C Wirasinha
- Infection and Immunity Program Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology Monash University Melbourne VIC Australia
| | - Christopher C Goodnow
- Garvan Institute of Medical Research & Cellular Genomics Futures Institute University of New South Wales Sydney NSW Australia
| | - Stephen R Daley
- Infection and Immunity Program Monash Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology Monash University Melbourne VIC Australia.,Present address: Centre for Immunology and Infection Control School of Biomedical Sciences Faculty of Health Queensland University of Technology Brisbane QLD Australia
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12
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Venegas-Montoya E, Staines-Boone AT, Sánchez-Sánchez LM, García-Campos JA, Córdova-Gurrola RA, Salazar-Galvez Y, Múzquiz-Zermeño D, González-Serrano ME, Lugo Reyes SO. Case Report: DOCK8 Deficiency Without Hyper-IgE in a Child With a Large Deletion. Front Pediatr 2021; 9:635322. [PMID: 34195158 PMCID: PMC8236627 DOI: 10.3389/fped.2021.635322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 04/19/2021] [Indexed: 12/14/2022] Open
Abstract
Autosomal recessive (AR) DOCK8 deficiency is a well-known actinopathy, a combined primary immune deficiency with impaired actin polymerization that results in altered cell mobility and immune synapse. DOCK8-deficient patients present early in life with eczema, viral cutaneous infections, chronic mucocutaneous candidiasis, bacterial pneumonia, and abscesses, together with eosinophilia, thrombocytosis, lymphopenia, and variable dysgammaglobulinemia that usually includes Hyper-IgE. In fact, before its genetic etiology was known, patients were described as having a form of Hyper-IgE syndrome, a name now deprecated in favor of genetic defects. We describe a school-age male patient with a clinical picture suggestive of DOCK8 deficiency, except for high serum IgE or a family history: early onset, failure to thrive, eczema, warts, condyloma, bronchiolitis, pneumonia, recurrent otitis media, bronchiectasis, candidiasis, leukocytosis, eosinophilia, high IgA, low IgG, and low CD4+ T cells. We were able to confirm the diagnosis through protein expression and whole-exome sequencing. We review the clinical, laboratory, and genetic features of 200 DOCK8-deficient patients; at least 4 other patients have had no elevated IgE, and about 40% do not have Hyper-IgE (above 1,000 IU/mL). Despite this, the constellation of signs, symptoms, and findings allow the suspicion of DOCK8 deficiency and other actinopathies.
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Affiliation(s)
- Edna Venegas-Montoya
- Immunology Service, Hospital de Especialidades Unidad Medica de Alta Especialidad (UMAE) 25 del Instituto Mexicano del Seguro Social (IMSS), Monterrey, Mexico
| | - Aidé Tamara Staines-Boone
- Immunology Service, Hospital de Especialidades Unidad Medica de Alta Especialidad (UMAE) 25 del Instituto Mexicano del Seguro Social (IMSS), Monterrey, Mexico
| | - Luz María Sánchez-Sánchez
- Pediatrics Service, Hospital de Especialidades Unidad Medica de Alta Especialidad (UMAE) 25 del Instituto Mexicano del Seguro Social (IMSS), Monterrey, Mexico
| | - Jorge Alberto García-Campos
- Infectious Disease Department, Hospital de Especialidades Unidad Medica de Alta Especialidad (UMAE) 25 del Instituto Mexicano del Seguro Social (IMSS), Monterrey, Mexico
| | | | - Yuridia Salazar-Galvez
- Immunology Service, Hospital de Especialidades Unidad Medica de Alta Especialidad (UMAE) 25 del Instituto Mexicano del Seguro Social (IMSS), Monterrey, Mexico
| | - David Múzquiz-Zermeño
- Immunology Service, Hospital de Especialidades Unidad Medica de Alta Especialidad (UMAE) 25 del Instituto Mexicano del Seguro Social (IMSS), Monterrey, Mexico
| | | | - Saul O Lugo Reyes
- Immunodeficiencies Lab, National Institute of Pediatrics, Mexico City, Mexico
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13
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Kunimura K, Sakata D, Tun X, Uruno T, Ushijima M, Katakai T, Shiraishi A, Aihara R, Kamikaseda Y, Matsubara K, Kanegane H, Sawa S, Eberl G, Ohga S, Yoshikai Y, Fukui Y. S100A4 Protein Is Essential for the Development of Mature Microfold Cells in Peyer's Patches. Cell Rep 2020; 29:2823-2834.e7. [PMID: 31775048 DOI: 10.1016/j.celrep.2019.10.091] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 09/20/2019] [Accepted: 10/22/2019] [Indexed: 01/22/2023] Open
Abstract
Intestinal microfold cells (M cells) in Peyer's patches are a special subset of epithelial cells that initiate mucosal immune responses through uptake of luminal antigens. Although the cytokine receptor activator of nuclear factor-κB ligand (RANKL) expressed on mesenchymal cells triggers differentiation into M cells, other environmental cues remain unknown. Here, we show that the metastasis-promoting protein S100A4 is required for development of mature M cells. S100A4-producing cells are a heterogenous cell population including lysozyme-expressing dendritic cells and group 3 innate lymphoid cells. We found that in the absence of DOCK8, a Cdc42 activator critical for interstitial leukocyte migration, S100A4-producing cells are reduced in the subepithelial dome, resulting in a maturation defect of M cells. While S100A4 promotes differentiation into mature M cells in organoid culture, genetic inactivation of S100a4 prevents the development of mature M cells in mice. Thus, S100A4 is a key environmental cue that regulates M cell differentiation in collaboration with RANKL.
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Affiliation(s)
- Kazufumi Kunimura
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Daiji Sakata
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan; Research Center for Advanced Immunology, Kyushu University, Fukuoka 812-8582, Japan
| | - Xin Tun
- Division of Host Defence, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Takehito Uruno
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan; Research Center for Advanced Immunology, Kyushu University, Fukuoka 812-8582, Japan
| | - Miho Ushijima
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Tomoya Katakai
- Department of Immunology, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Akira Shiraishi
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Ryosuke Aihara
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Yasuhisa Kamikaseda
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Keisuke Matsubara
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Hirokazu Kanegane
- Department of Child Health and Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8519, Japan
| | - Shinichiro Sawa
- Division of Mucosal Immunology, Research Center for Systems Immunology, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Gérard Eberl
- Microenvironment & Immunity Unit, INSERM U1224, Institut Pasteur, Paris 75724, France
| | - Shouichi Ohga
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Yasunobu Yoshikai
- Division of Host Defence, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Yoshinori Fukui
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan; Research Center for Advanced Immunology, Kyushu University, Fukuoka 812-8582, Japan.
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14
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Ascorbic acid promotes the reproductive function of porcine immature Sertoli cells through transcriptome reprogramming. Theriogenology 2020; 158:309-320. [PMID: 33007716 PMCID: PMC7524525 DOI: 10.1016/j.theriogenology.2020.09.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/18/2020] [Accepted: 09/14/2020] [Indexed: 12/31/2022]
Abstract
Vitamin C (ascorbic acid, AA) can regulate antioxidation and affect many cellular processes. However, the effect of AA on the reproduction of male animals remains less explored. Here, we showed that by supplementing exogenous AA to porcine immature Sertoli cells (iSCs), AA could promote the proliferation, suppress apoptosis, and decrease the global nucleic acid methylation (5 mC and m6A) levels of iSCs. After we profiled mRNA and long non-coding RNA (lncRNA) expression by transcriptome sequencing on iSCs (treated by 250 μM AA for 36 h), 1232 mRNAs and 937 lncRNAs were identified to be differentially expressed (DE). Gene enrichment analysis found multiple significantly enriched biological pathways, including oxidoreductase activity, cell proliferation and apoptosis, regulation of hormone level, regulation of catalytic activity, developmental process, ATP metabolism and reproductive process. Specifically, for the reproductive process, 49 up- and 36 down-regulated DE mRNAs (including highly expressed genes, such as Tfcp2l1, Hmgcs1, Mmp7, Fndc3a, and Zfp36l1) are involved. Moreover, AA supplementation could promote the secretion of anti-müllerian hormone, inhibin B and lactate, and enhance the activity of lactate dehydrogenase as well. Taken together, AA could promote the reproductive function of pig iSCs, potentially through reprogramming the global transcriptome, and elevating hormone secretion and metabolite production. AA could promote the proliferation, suppress apoptosis, and decrease the global nucleic acid mthylation levels of iSCs. AA treatment changed mRNA and lncRNA profiles of iSCs. AA treatment significantly disturbed the expression of mRNAs (such as Tfcp2l1, Hmgcs1, Mmp7, Fndc3a, and Zfp36l1) involved in reproductive process. AA supplement could promote the secretion of anti-mullerian hormone, inhibin B and lactate, and the activity of lactate dehydrogenase as well.
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15
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Aihara R, Kunimura K, Watanabe M, Uruno T, Yamane N, Sakurai T, Sakata D, Nishimura F, Fukui Y. DOCK8 controls survival of group 3 innate lymphoid cells in the gut through Cdc42 activation. Int Immunol 2020; 33:149-160. [PMID: 32986079 DOI: 10.1093/intimm/dxaa066] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 09/25/2020] [Indexed: 12/12/2022] Open
Abstract
Innate lymphoid cells (ILCs) are a family of developmentally related leukocytes that rapidly secrete polarized sets of cytokines to combat infection and promote tissue repair at mucosal barriers. Among them, group 3 ILCs (ILC3s) play an important role in maintenance of the gut homeostasis by producing IL-22, and their development and function critically depend on the transcription factor RORγt. Although recent evidence indicates that RORγt+ ILC3s are reduced in the gut in the absence of the Cdc42 activator DOCK8 (dedicator of cytokinesis 8), the underlying mechanism remains unclear. We found that genetic deletion of Dock8 in RORγt+-lineage cells markedly reduced ILC3s in the lamina propria of the small intestine. By analyzing BrdU incorporation, it was revealed that DOCK8 deficiency did not affect the cell proliferation. Furthermore, when lineage marker-negative (Lin-) α4β7+ CD127+ RORγt- fetal liver cells were cultured with OP9 stromal cells in the presence of stem cell factor (SCF) and IL-7 in vitro, RORγt+ ILC3s normally developed irrespective of DOCK8 expression. However, DOCK8-deficient ILC3s exhibited a severe defect in survival of ILC3s under the condition with or without IL-7. Similar defects were observed when we analyzed Dock8VAGR mice having mutations in the catalytic center of DOCK8, thereby failing to activate Cdc42. Thus, DOCK8 acts in cell-autonomous manner to control survival of ILC3s in the gut through Cdc42 activation.
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Affiliation(s)
- Ryosuke Aihara
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation.,Section of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan
| | - Kazufumi Kunimura
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Mayuki Watanabe
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Takehito Uruno
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Nana Yamane
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Tetsuya Sakurai
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Daiji Sakata
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Fusanori Nishimura
- Section of Periodontology, Division of Oral Rehabilitation, Faculty of Dental Science, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan
| | - Yoshinori Fukui
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
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16
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Kunimura K, Uruno T, Fukui Y. DOCK family proteins: key players in immune surveillance mechanisms. Int Immunol 2020; 32:5-15. [PMID: 31630188 PMCID: PMC6949370 DOI: 10.1093/intimm/dxz067] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 10/16/2019] [Indexed: 12/11/2022] Open
Abstract
Dedicator of cytokinesis (DOCK) proteins constitute a family of evolutionarily conserved guanine nucleotide exchange factors (GEFs) for the Rho family of GTPases. Although DOCK family proteins do not contain the Dbl homology domain typically found in other GEFs, they mediate the GTP–GDP exchange reaction through the DOCK homology region-2 (DHR-2) domain. In mammals, this family consists of 11 members, each of which has unique functions depending on the expression pattern and the substrate specificity. For example, DOCK2 is a Rac activator critical for migration and activation of leukocytes, whereas DOCK8 is a Cdc42-specific GEF that regulates interstitial migration of dendritic cells. Identification of DOCK2 and DOCK8 as causative genes for severe combined immunodeficiency syndromes in humans has highlighted their roles in immune surveillance. In addition, the recent discovery of a naturally occurring DOCK2-inhibitory metabolite has uncovered an unexpected mechanism of tissue-specific immune evasion. On the other hand, GEF-independent functions have been shown for DOCK8 in antigen-induced IL-31 production in helper T cells. This review summarizes multifaced functions of DOCK family proteins in the immune system.
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Affiliation(s)
- Kazufumi Kunimura
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan
| | - Takehito Uruno
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan.,Research Center for Advanced Immunology, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan
| | - Yoshinori Fukui
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan.,Research Center for Advanced Immunology, Kyushu University, Maidashi, Higashi-ku, Fukuoka, Japan
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17
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Namekata K, Guo X, Kimura A, Arai N, Harada C, Harada T. DOCK8 is expressed in microglia, and it regulates microglial activity during neurodegeneration in murine disease models. J Biol Chem 2019; 294:13421-13433. [PMID: 31337702 DOI: 10.1074/jbc.ra119.007645] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 06/25/2019] [Indexed: 12/15/2022] Open
Abstract
Dedicator of cytokinesis 8 (DOCK8) is a guanine nucleotide exchange factor whose loss of function results in immunodeficiency, but its role in the central nervous system (CNS) has been unclear. Microglia are the resident immune cells of the CNS and are implicated in the pathogenesis of various neurodegenerative diseases, including multiple sclerosis (MS) and glaucoma, which affects the visual system. However, the exact roles of microglia in these diseases remain unknown. Herein, we report that DOCK8 is expressed in microglia but not in neurons or astrocytes and that its expression is increased during neuroinflammation. To define the role of DOCK8 in microglial activity, we focused on the retina, a tissue devoid of infiltrating T cells. The retina is divided into distinct layers, and in a disease model of MS/optic neuritis, DOCK8-deficient mice exhibited a clear reduction in microglial migration through these layers. Moreover, neuroinflammation severity, indicated by clinical scores, visual function, and retinal ganglion cell (RGC) death, was reduced in the DOCK8-deficient mice. Furthermore, using a glaucoma disease model, we observed impaired microglial phagocytosis of RGCs in DOCK8-deficient mice. Our data demonstrate that DOCK8 is expressed in microglia and regulates microglial activity in disease states. These findings contribute to a better understanding of the molecular pathways involved in microglial activation and implicate a role of DOCK8 in several neurological diseases.
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Affiliation(s)
- Kazuhiko Namekata
- Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Xiaoli Guo
- Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Atsuko Kimura
- Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Nobutaka Arai
- Brain Pathology Research Center, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Chikako Harada
- Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan
| | - Takayuki Harada
- Visual Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo 156-8506, Japan.
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18
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Tavassoli M, Abolhassani H, Yazdani R, Ghadami M, Azizi G, Abdolrahim Poor Heravi S, Moeini Shad T, Kokabee M, Movahedi M, Abdshahzadeh H, Gharagozlou M, Rezaei N, Esmaeilzadeh H, Aleyasin S, Aghamohammadi A. The first cohort of Iranian patients with hyper immunoglobulin E syndrome: A long-term follow-up and genetic analysis. Pediatr Allergy Immunol 2019; 30:469-478. [PMID: 30801830 DOI: 10.1111/pai.13043] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/12/2019] [Accepted: 01/28/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Hyper-IgE syndromes (HIES) are distinct diseases characterized by recurrent cutaneous and lung infections, eczema, and elevated serum IgE level. METHODS In this study, clinical manifestations, immunologic findings, and genetic studies of all patients with HIES in the Iranian national registry database were evaluated. RESULTS A total of 129 HIES patients with a median age of 14.0 (9.0-24.0) years were followed up for a total of 307.8 patient-years. Genetic studies showed heterozygous STAT3 mutations in 19 patients and homozygous DOCK8 mutation in 16 patients. The mean of National Institutes of Health score in STAT3-deficient patients was higher than in patients with DOCK8 mutation (P = 0.001). It was shown that the presence of pneumatocele and hematologic complication were significantly frequent in STAT3-deficient cases compared to patients with DOCK8 deficiency (P = 0.001 and P = 0.002, respectively). Moreover, the median IgE serum levels were higher in patients with STAT3 gene mutation than in patients with DOCK8 gene mutation (P = 0.02). The eosinophils' count was enhanced in patients with DOCK8 deficiency than in patients with STAT3 gene defects (P = 0.02). CONCLUSION Specific molecular study of STAT3 and DOCK8 mutations in patients with HIES clinical phenotype could help the physician to definitively characterize the disease. Since HIES showed the highest rate of unsolved combined immunodeficiency, investigation of other genetic and environmental factors could also help in understanding the mechanism of remaining patients as well as providing strategy into therapeutic modalities.
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Affiliation(s)
- Mahmood Tavassoli
- Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hassan Abolhassani
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.,Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Reza Yazdani
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohsen Ghadami
- Molecular Immunology Research Center, Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Azizi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | | | - Tannaz Moeini Shad
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mostafa Kokabee
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Masoud Movahedi
- Department of Allergy and Clinical Immunology, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Hormoz Abdshahzadeh
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Gharagozlou
- Department of Allergy and Clinical Immunology, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.,Network for Immunology in Infection, Malignancy, and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | | | - Soheila Aleyasin
- Allergy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Asghar Aghamohammadi
- Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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19
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Pillay BA, Avery DT, Smart JM, Cole T, Choo S, Chan D, Gray PE, Frith K, Mitchell R, Phan TG, Wong M, Campbell DE, Hsu P, Ziegler JB, Peake J, Alvaro F, Picard C, Bustamante J, Neven B, Cant AJ, Uzel G, Arkwright PD, Casanova JL, Su HC, Freeman AF, Shah N, Hickstein DD, Tangye SG, Ma CS. Hematopoietic stem cell transplant effectively rescues lymphocyte differentiation and function in DOCK8-deficient patients. JCI Insight 2019; 5:127527. [PMID: 31021819 DOI: 10.1172/jci.insight.127527] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Bi-allelic inactivating mutations in DOCK8 cause a combined immunodeficiency characterised by severe pathogen infections, eczema, allergies, malignancy and impaired humoral responses. These clinical features result from functional defects in most lymphocyte lineages. Thus, DOCK8 plays a key role in immune cell function. Hematopoietic stem cell transplantation (HSCT) is curative for DOCK8 deficiency. While previous reports have described clinical outcomes for DOCK8 deficiency following HSCT, the effect on lymphocyte reconstitution and function has not been investigated. Our study determined whether defects in lymphocyte differentiation and function in DOCK8-deficient patients were restored following HSCT. DOCK8-deficient T and B lymphocytes exhibited aberrant activation and effector function in vivo and in vitro. Frequencies of αβ T and MAIT cells were reduced while γδT cells were increased in DOCK8-deficient patients. HSCT improved, abnormal lymphocyte function in DOCK8-deficient patients. Elevated total and allergen-specific IgE in DOCK8-deficient patients decreased over time following HSCT. Our results document the extensive catalogue of cellular defects in DOCK8-deficient patients, and the efficacy of HSCT to correct these defects, concurrent with improvements in clinical phenotypes. Overall, our findings provide mechanisms at a functional cellular level for improvements in clinical features of DOCK8 deficiency post-HSCT, identify biomarkers that correlate with improved clinical outcomes, and inform the general dynamics of immune reconstitution in patients with monogenic immune disorders following HSCT.
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Affiliation(s)
- Bethany A Pillay
- Garvan Institute of Medical Research, Sydney, New South Wales, Australia.,St Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney, New South Wales, Australia
| | - Danielle T Avery
- Garvan Institute of Medical Research, Sydney, New South Wales, Australia
| | - Joanne M Smart
- Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Theresa Cole
- Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Sharon Choo
- Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Damien Chan
- Women and Children's Hosp==ital, Adelaide, South Australia, Australia
| | - Paul E Gray
- Department of Immunology and Infectious Diseases, Sydney Children's Hospital, Sydney, New South Wales, Australia.,School of Women's and Children's Health, UNSW Sydney, Sydney, New South Wales, Australia.,Clinical Immunogenomics Research Consortium of Australia (CIRCA), Sydney, New South Wales, Australia
| | - Katie Frith
- Department of Immunology and Infectious Diseases, Sydney Children's Hospital, Sydney, New South Wales, Australia.,School of Women's and Children's Health, UNSW Sydney, Sydney, New South Wales, Australia
| | - Richard Mitchell
- School of Women's and Children's Health, UNSW Sydney, Sydney, New South Wales, Australia.,Kids Cancer Centre, Sydney Children's Hospital, Randwick, New South Wales Australia
| | - Tri Giang Phan
- Garvan Institute of Medical Research, Sydney, New South Wales, Australia.,St Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney, New South Wales, Australia.,Clinical Immunogenomics Research Consortium of Australia (CIRCA), Sydney, New South Wales, Australia
| | - Melanie Wong
- Clinical Immunogenomics Research Consortium of Australia (CIRCA), Sydney, New South Wales, Australia.,Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - Dianne E Campbell
- Clinical Immunogenomics Research Consortium of Australia (CIRCA), Sydney, New South Wales, Australia.,Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - Peter Hsu
- Clinical Immunogenomics Research Consortium of Australia (CIRCA), Sydney, New South Wales, Australia.,Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - John B Ziegler
- Department of Immunology and Infectious Diseases, Sydney Children's Hospital, Sydney, New South Wales, Australia.,School of Women's and Children's Health, UNSW Sydney, Sydney, New South Wales, Australia.,Clinical Immunogenomics Research Consortium of Australia (CIRCA), Sydney, New South Wales, Australia
| | - Jane Peake
- Queensland Children's Hospital, South Brisbane, Queensland, Australia
| | - Frank Alvaro
- Pediatric Hematology, John Hunter Hospital, New Lambton, New South Wales, Australia
| | - Capucine Picard
- Laboratory of Lymphocyte Activation and Susceptibility to EBV Infection, INSERM UMR 1163, Imagine institut, Paris, France.,Study Center for Primary Immunodeficiencies, Assistance Publique-Hôpitaux de Paris (AP-HP), Necker Hospital for Sick Children, Paris, France.,Pediatric Hematology and Immunology Unit, Necker Hospital for Sick Children, AP-HP, Paris, France
| | - Jacinta Bustamante
- Laboratory of Lymphocyte Activation and Susceptibility to EBV Infection, INSERM UMR 1163, Imagine institut, Paris, France.,Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Institut IMAGINE, Necker Medical School, University Paris Descartes Paris, France.,St Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, New York, USA
| | - Benedicte Neven
- Pediatric Hematology-Immunology Unit, Necker Hospital for Sick Children, AP-HP, Paris, France
| | - Andrew J Cant
- Great North Children's Hospital, Newcastle upon Tyne Hospitals, NHS Foundation Trust, Newcastle upon Tyne, United Kingdom.,Primary Immunodeficiency Group, Institute of Cellular Medicine, Newcastle upon Tyne University, Newcastle upon Tyne, United Kingdom
| | - Gulbu Uzel
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland, USA
| | - Peter D Arkwright
- Lydia Becker Institute of Immunology & Inflammation, University of Manchester, Manchester, United Kingdom
| | - Jean-Laurent Casanova
- Pediatric Hematology and Immunology Unit, Necker Hospital for Sick Children, AP-HP, Paris, France.,Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Institut IMAGINE, Necker Medical School, University Paris Descartes Paris, France.,St Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, New York, USA.,Howard Hughes Medical Institute, New York, New York, USA
| | - Helen C Su
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland, USA
| | - Alexandra F Freeman
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, Maryland, USA
| | | | - Dennis D Hickstein
- Experimental Transplantation and Immunology Branch, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Stuart G Tangye
- Garvan Institute of Medical Research, Sydney, New South Wales, Australia.,St Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney, New South Wales, Australia.,Clinical Immunogenomics Research Consortium of Australia (CIRCA), Sydney, New South Wales, Australia
| | - Cindy S Ma
- Garvan Institute of Medical Research, Sydney, New South Wales, Australia.,St Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney, New South Wales, Australia.,Clinical Immunogenomics Research Consortium of Australia (CIRCA), Sydney, New South Wales, Australia
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20
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Tangye SG, Bucciol G, Casas‐Martin J, Pillay B, Ma CS, Moens L, Meyts I. Human inborn errors of the actin cytoskeleton affecting immunity: way beyond WAS and WIP. Immunol Cell Biol 2019; 97:389-402. [DOI: 10.1111/imcb.12243] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 02/09/2019] [Indexed: 01/02/2023]
Affiliation(s)
- Stuart G Tangye
- Immunology Division Garvan Institute of Medical Research Sydney NSW Australia
- Faculty of Medicine St Vincent's Clinical School UNSW Sydney Sydney NSW Australia
| | - Giorgia Bucciol
- Laboratory for Inborn Errors of Immunity Department of Microbiology and Immunology KU Leuven Leuven Belgium
- Department of Pediatrics University Hospitals Leuven Leuven Belgium
| | - Jose Casas‐Martin
- Laboratory for Inborn Errors of Immunity Department of Microbiology and Immunology KU Leuven Leuven Belgium
| | - Bethany Pillay
- Immunology Division Garvan Institute of Medical Research Sydney NSW Australia
- Faculty of Medicine St Vincent's Clinical School UNSW Sydney Sydney NSW Australia
| | - Cindy S Ma
- Immunology Division Garvan Institute of Medical Research Sydney NSW Australia
- Faculty of Medicine St Vincent's Clinical School UNSW Sydney Sydney NSW Australia
| | - Leen Moens
- Laboratory for Inborn Errors of Immunity Department of Microbiology and Immunology KU Leuven Leuven Belgium
| | - Isabelle Meyts
- Laboratory for Inborn Errors of Immunity Department of Microbiology and Immunology KU Leuven Leuven Belgium
- Department of Pediatrics University Hospitals Leuven Leuven Belgium
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21
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Wilson AS, Law HD, Knobbe-Thomsen CB, Kearney CJ, Oliaro J, Binsfeld C, Burgio G, Starrs L, Brenner D, Randall KL, Brüstle A. Protection from EAE in DOCK8 mutant mice occurs despite increased Th17 cell frequencies in the periphery. Eur J Immunol 2019; 49:770-781. [PMID: 30729501 DOI: 10.1002/eji.201847960] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 01/24/2019] [Accepted: 02/04/2019] [Indexed: 11/08/2022]
Abstract
Mutation of Dedicator of cytokinesis 8 (DOCK8) has previously been reported to provide resistance to the Th17 cell dependent EAE in mice. Contrary to expectation, we observed an elevation of Th17 cells in two different DOCK8 mutant mouse strains in the steady state. This was specific for Th17 cells with no change in Th1 or Th2 cell populations. In vitro Th cell differentiation assays revealed that the elevated Th17 cell population was not due to a T cell intrinsic differentiation bias. Challenging these mutant mice in the EAE model, we confirmed a resistance to this autoimmune disease with Th17 cells remaining elevated systemically while cellular infiltration in the CNS was reduced. Infiltrating T cells lost the bias toward Th17 cells indicating a relative reduction of Th17 cells in the CNS and a Th17 cell specific migration disadvantage. Adoptive transfers of Th1 and Th17 cells in EAE-affected mice further supported the Th17 cell-specific migration defect, however, DOCK8-deficient Th17 cells expressed normal Th17 cell-specific CCR6 levels and migrated toward chemokine gradients in transwell assays. This study shows that resistance to EAE in DOCK8 mutant mice is achieved despite a systemic Th17 bias.
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Affiliation(s)
- Alicia S Wilson
- The John Curtin School of Medical Research, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Hsei Di Law
- The John Curtin School of Medical Research, The Australian National University, Canberra, Australian Capital Territory, Australia
| | | | - Conor J Kearney
- Immune Defence Laboratory, Cancer Immunology Division, The Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Jane Oliaro
- Immune Defence Laboratory, Cancer Immunology Division, The Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Carole Binsfeld
- Department of Infection and Immunity, Experimental and Molecular Immunology, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg
| | - Gaetan Burgio
- The John Curtin School of Medical Research, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Lora Starrs
- The John Curtin School of Medical Research, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Dirk Brenner
- Department of Infection and Immunity, Experimental and Molecular Immunology, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg.,Odense Research Center for Anaphylaxis, Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, Odense, Denmark
| | - Katrina L Randall
- The John Curtin School of Medical Research, The Australian National University, Canberra, Australian Capital Territory, Australia.,ANU Medical School, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Anne Brüstle
- The John Curtin School of Medical Research, The Australian National University, Canberra, Australian Capital Territory, Australia
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22
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Mandola AB, Levy J, Nahum A, Hadad N, Levy R, Rylova A, Simon AJ, Lev A, Somech R, Broides A. Neutrophil Functions in Immunodeficiency Due to DOCK8 Deficiency. Immunol Invest 2019; 48:431-439. [PMID: 30689480 DOI: 10.1080/08820139.2019.1567533] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Neutrophil chemotactic defects have been reported previously in patients with hyper-IgE syndrome. Bi-allelic mutations in dedicator of cytokinesis 8 (DOCK8) gene usually cause an autosomal recessive hyper-IgE syndrome phenotype. Data are lacking about expression of DOCK8 protein in neutrophils or the possible role of DOCK8 in neutrophil function. We sought to determine if DOCK8 protein is expressed in neutrophils and if DOCK8 plays a role in neutrophil function. The expression of DOCK8 protein was assessed in neutrophils from healthy volunteers with and without activators. Neutrophil chemotaxis, phagocytosis and superoxide generation were studied in neutrophils from DOCK8-deficient patients compared to neutrophils from healthy controls before and after stimulation with activators: phorbol 12-myristate 13-acetate (PMA) or N-Formylmethionyl-leucyl-phenylalanine (fMLP). DOCK8 protein is expressed in resting neutrophils from healthy controls, with a significant increase in DOCK8 expression after stimulation. Neutrophil functions were assessed in 6 DOCK8-deficient patients. All patients had the same non-sense mutation (c.C5134A, p.S1711X). Normal chemotaxis was recorded in 4/6 patients while a mild to moderate chemotaxis defect was recorded in 2/6. Superoxide generation was mainly normal in neutrophils from all six patients and phagocytosis was normal in five patients tested. We conclude that DOCK8 protein is expressed in resting human neutrophils and DOCK8 expression is increased after stimulation with either PMA or fMLP. Most patients with a disease-causing mutation in DOCK8 have normal neutrophil functions, while a minority showed a mild to moderate chemotactic defect.
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Affiliation(s)
- Amarilla B Mandola
- a Pediatric Immunology Clinic.,b Soroka University Medical Center.,c Faculty of Health Sciences , Ben-Gurion University of the Negev , Beer Sheva , Israel
| | - Jacov Levy
- a Pediatric Immunology Clinic.,b Soroka University Medical Center.,c Faculty of Health Sciences , Ben-Gurion University of the Negev , Beer Sheva , Israel
| | - Amit Nahum
- a Pediatric Immunology Clinic.,b Soroka University Medical Center.,c Faculty of Health Sciences , Ben-Gurion University of the Negev , Beer Sheva , Israel
| | - Nurit Hadad
- b Soroka University Medical Center.,c Faculty of Health Sciences , Ben-Gurion University of the Negev , Beer Sheva , Israel.,d Infectious Disease Laboratory, Department of Clinical Biochemistry , Ben-Gurion University of the Negev , Beer Sheva , Israel
| | - Rachel Levy
- b Soroka University Medical Center.,c Faculty of Health Sciences , Ben-Gurion University of the Negev , Beer Sheva , Israel.,d Infectious Disease Laboratory, Department of Clinical Biochemistry , Ben-Gurion University of the Negev , Beer Sheva , Israel
| | - Anna Rylova
- e Pediatric Immunology, Edmond and Lily Safra Children's Hospital, Sheba Medical Center , Tel Hashomer , Israel
| | - Amos J Simon
- e Pediatric Immunology, Edmond and Lily Safra Children's Hospital, Sheba Medical Center , Tel Hashomer , Israel
| | - Atar Lev
- e Pediatric Immunology, Edmond and Lily Safra Children's Hospital, Sheba Medical Center , Tel Hashomer , Israel
| | - Raz Somech
- e Pediatric Immunology, Edmond and Lily Safra Children's Hospital, Sheba Medical Center , Tel Hashomer , Israel.,f Sackler School of Medicine , Tel Aviv University , Tel Aviv , Israel
| | - Arnon Broides
- a Pediatric Immunology Clinic.,b Soroka University Medical Center.,c Faculty of Health Sciences , Ben-Gurion University of the Negev , Beer Sheva , Israel
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23
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Su HC, Jing H, Angelus P, Freeman AF. Insights into immunity from clinical and basic science studies of DOCK8 immunodeficiency syndrome. Immunol Rev 2019; 287:9-19. [PMID: 30565250 PMCID: PMC6350515 DOI: 10.1111/imr.12723] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 10/15/2018] [Indexed: 12/29/2022]
Abstract
DOCK8 immunodeficiency syndrome (DIDS) is a progressive combined immunodeficiency that can be distinguished from other combined immunodeficiencies or hyperimmunoglobulinemia E syndromes in featuring (a) profound susceptibility to virus infections of the skin, with associated skin cancers, and (b) severe food allergies. The DOCK8 locus has many repetitive sequence elements that predispose to the generation of large germline deletions as well as recombination-mediated somatic DNA repair. Residual DOCK8 protein contributes to the variable disease phenotype. The severe virus infections of the skin, and probably also VZV-associated vasculopathy, reflect an important function of DOCK8, which is normally required to maintain lymphocyte shape integrity as the cells migrate through dense tissues. Loss of DOCK8 also causes immune deficits through other mechanisms including a milder generalized cell survival defect and skewing of T helper cell subsets. Recent work has uncovered the roles for DOCK8 in dendritic cell responses that can also help explain the virus susceptibility, as well as in regulatory T cells that might help explain autoimmunity in a minority of patients. Fortunately, hematopoietic stem cell transplantation cures the eczema and infection susceptibility of DIDS, but not necessarily the other disease manifestations including food allergies.
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Affiliation(s)
- Helen C. Su
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health
| | - Huie Jing
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health
| | - Pam Angelus
- Clinical Monitoring Research Program Directorate, Frederick National Laboratory for Cancer Research, National Cancer Institute, National Institutes of Health
| | - Alexandra F. Freeman
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health
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24
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Shissler SC, Webb TJ. The ins and outs of type I iNKT cell development. Mol Immunol 2018; 105:116-130. [PMID: 30502719 DOI: 10.1016/j.molimm.2018.09.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 09/14/2018] [Accepted: 09/29/2018] [Indexed: 01/07/2023]
Abstract
Natural killer T (NKT) cells are innate-like lymphocytes that bridge the gap between the innate and adaptive immune responses. Like innate immune cells, they have a mature, effector phenotype that allows them to rapidly respond to threats, compared to adaptive cells. NKT cells express T cell receptors (TCRs) like conventional T cells, but instead of responding to peptide antigen presented by MHC class I or II, NKT cell TCRs recognize glycolipid antigen in the context of CD1d. NKT cells are subdivided into classes based on their TCR and antigen reactivity. This review will focus on type I iNKT cells that express a semi invariant Vα14Jα18 TCR and respond to the canonical glycolipid antigen, α-galactosylceramide. The innate-like effector functions of these cells combined with their T cell identity make their developmental path quite unique. In addition to the extrinsic factors that affect iNKT cell development such as lipid:CD1d complexes, co-stimulation, and cytokines, this review will provide a comprehensive delineation of the cell intrinsic factors that impact iNKT cell development, differentiation, and effector functions - including TCR rearrangement, survival and metabolism signaling, transcription factor expression, and gene regulation.
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Affiliation(s)
- Susannah C Shissler
- Department of Microbiology and Immunology, University of Maryland School of Medicine, 685 W. Baltimore St. HSF-1 Room 380, Baltimore, MD 21201, USA.
| | - Tonya J Webb
- Department of Microbiology and Immunology, University of Maryland School of Medicine, 685 W. Baltimore St. HSF-1 Room 380, Baltimore, MD 21201, USA
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25
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Zhang Q, Boisson B, Béziat V, Puel A, Casanova JL. Human hyper-IgE syndrome: singular or plural? Mamm Genome 2018; 29:603-617. [PMID: 30094507 PMCID: PMC6317873 DOI: 10.1007/s00335-018-9767-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 08/02/2018] [Indexed: 12/15/2022]
Abstract
Spectacular progress has been made in the characterization of human hyper-IgE syndrome (HIES) over the last 50 years. HIES is a primary immunodeficiency defined as an association of atopy in a context of very high serum IgE levels, characteristic bacterial and fungal diseases, low-level clinical and biological inflammation, and various non-hematopoietic developmental manifestations. Somewhat arbitrarily, three disorders were successively put forward as the underlying cause of HIES: autosomal dominant (AD) STAT3 deficiency, the only disorder corresponding to the original definition of HIES, and autosomal recessive (AR) DOCK8 and PGM3 deficiencies, in which atopy and high serum IgE levels occur in a context of manifestations not seen in patients with typical HIES. Indeed, these three disorders disrupt different molecular pathways, affect different cell types, and underlie different clinical phenotypes. Surprisingly, several other inherited inborn errors of immunity in which serum IgE levels are high, sometimes almost as high as those in HIES patients, are not considered to belong to the HIES group of diseases. Studies of HIES have been further complicated by the lack of a high serum IgE phenotype in all mouse models of the disease other than two Stat3 mutant strains. The study of infections in mutant mice has helped elucidate only some forms of HIES and infection. Mouse models of these conditions have also been used to study non-hematopoietic phenotypes for STAT3 deficiency, tissue-specific immunity for DOCK8 deficiency, and cell lineage maturation for PGM3 deficiency. We review here the history of the field of HIES since the first clinical description of this condition in 1966, together with the three disorders commonly referred to as HIES, focusing, in particular, on their mouse models. We propose the restriction of the term "HIES" to patients with an AD STAT3-deficiency phenotype, including the most recently described AR ZNF341 deficiency, thus excluding AR DOCK8 and PGM3 deficiencies from the definition of this disease.
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Affiliation(s)
- Qian Zhang
- St Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY, USA.
| | - Bertrand Boisson
- St Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY, USA
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Paris, France
- Paris Descartes University, Imagine Institute, Paris, France
| | - Vivien Béziat
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Paris, France
- Paris Descartes University, Imagine Institute, Paris, France
| | - Anne Puel
- St Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY, USA
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Paris, France
- Paris Descartes University, Imagine Institute, Paris, France
| | - Jean-Laurent Casanova
- St Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY, USA
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Paris, France
- Paris Descartes University, Imagine Institute, Paris, France
- Pediatric Hematology-Immunology Unit, Necker Hospital for Sick Children, AP-HP, 75015, Paris, France
- Howard Hughes Medical Institute, New York, NY, USA
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26
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Broides A, Mandola AB, Levy J, Yerushalmi B, Pinsk V, Eldan M, Shubinsky G, Hadad N, Levy R, Nahum A, Ben-Harosh M, Lev A, Simon A, Somech R. The clinical and laboratory spectrum of dedicator of cytokinesis 8 immunodeficiency syndrome in patients with a unique mutation. Immunol Res 2018; 65:651-657. [PMID: 28070732 DOI: 10.1007/s12026-016-8883-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Mutations in the dedicator of cytokinesis 8 (DOCK8) gene cause a combined immunodeficiency usually diagnosed as autosomal recessive hyper IgE syndrome. We sought to reveal the varying manifestations in patients with a unique mutation in DOCK8 gene by a retrospective medical record review. Ten patients from five consanguineous families and three tribes were included. Seven patients were homozygous for the c.C5134A, p.S1711X mutation, and the remaining three patients were their siblings manifesting hyper IgE syndrome features without a genetic diagnosis. Prior to the genetic diagnosis, the clinical diagnosis was "hyper IgE syndrome" in six patients and "anti-pneumococcal antibody deficiency," "recurrent pneumonia with bronchiectasis," and "asthma with hypereosinophilic syndrome" each diagnosed once. One additional patient was diagnosed due to family history. The age of presentation varied from 1 to 16 months. Eczema was diagnosed in all patients, food allergies in three, and severe herpes keratitis or malignancy or autoimmunity in two patients. Elevated IgE was recorded in nine patients; however, in six patients, the initial serum IgE concentration was equal to or less than three times the normal concentration for age, and in these patients, the median age at IgE evaluation was 7.5 months compared with 21.5 months in patients with an initial IgE concentration above three times the normal concentration for age (P = 0.067). The spectrum of disease manifestations in patients with a unique mutation in DOCK8 is variable. The genotype-phenotype correlations may be modified by genetic and/or epigenetic modifiers beyond the monogenic effect. Younger patients tend to have lower IgE concentrations at the initial measurement of IgE.
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Affiliation(s)
- Arnon Broides
- Pediatric Immunology Clinic, Soroka University Medical Center, Faculty of Health Science, Ben-Gurion University of the Negev. POB151, Beer Sheva, 84101, Israel. .,Soroka University Medical Center, Beer Sheva, Israel. .,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | - Amarilla B Mandola
- Pediatric Immunology Clinic, Soroka University Medical Center, Faculty of Health Science, Ben-Gurion University of the Negev. POB151, Beer Sheva, 84101, Israel.,Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Jacov Levy
- Pediatric Immunology Clinic, Soroka University Medical Center, Faculty of Health Science, Ben-Gurion University of the Negev. POB151, Beer Sheva, 84101, Israel.,Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Baruch Yerushalmi
- Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Pediatric Ambulatory Care Unit, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Vered Pinsk
- Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Pediatric Ambulatory Care Unit, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Michal Eldan
- Tel-Sheva Clinic, Clalit Health Services, Tel-Sheva, Israel
| | - George Shubinsky
- Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Flow Cytometry Unit, Hematology Laboratory, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Nurit Hadad
- Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Immunology and Infectious Disease Laboratory, Department of Clinical Biochemistry, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Rachel Levy
- Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Immunology and Infectious Disease Laboratory, Department of Clinical Biochemistry, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Amit Nahum
- Pediatric Immunology Clinic, Soroka University Medical Center, Faculty of Health Science, Ben-Gurion University of the Negev. POB151, Beer Sheva, 84101, Israel.,Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Pediatric Department A, Soroka University Medical Center, Beer Sheva, Israel
| | - Miriam Ben-Harosh
- Soroka University Medical Center, Beer Sheva, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Pediatric Hemato-Oncology Department, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Atar Lev
- Pediatric Immunology, Safra Children's Hospital, Sheba Medical Center, Tel Aviv University, Tel Hashomer, Israel
| | - Amos Simon
- Pediatric Immunology, Safra Children's Hospital, Sheba Medical Center, Tel Aviv University, Tel Hashomer, Israel
| | - Raz Somech
- Pediatric Immunology, Safra Children's Hospital, Sheba Medical Center, Tel Aviv University, Tel Hashomer, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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Kumar A, Suryadevara N, Hill TM, Bezbradica JS, Van Kaer L, Joyce S. Natural Killer T Cells: An Ecological Evolutionary Developmental Biology Perspective. Front Immunol 2017; 8:1858. [PMID: 29312339 PMCID: PMC5743650 DOI: 10.3389/fimmu.2017.01858] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 12/07/2017] [Indexed: 12/18/2022] Open
Abstract
Type I natural killer T (NKT) cells are innate-like T lymphocytes that recognize glycolipid antigens presented by the MHC class I-like protein CD1d. Agonistic activation of NKT cells leads to rapid pro-inflammatory and immune modulatory cytokine and chemokine responses. This property of NKT cells, in conjunction with their interactions with antigen-presenting cells, controls downstream innate and adaptive immune responses against cancers and infectious diseases, as well as in several inflammatory disorders. NKT cell properties are acquired during development in the thymus and by interactions with the host microbial consortium in the gut, the nature of which can be influenced by NKT cells. This latter property, together with the role of the host microbiota in cancer therapy, necessitates a new perspective. Hence, this review provides an initial approach to understanding NKT cells from an ecological evolutionary developmental biology (eco-evo-devo) perspective.
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Affiliation(s)
- Amrendra Kumar
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN, United States.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Naveenchandra Suryadevara
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Timothy M Hill
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States.,Department of Chemistry and Life Science, United States Military Academy, West Point, NY, United States
| | - Jelena S Bezbradica
- The Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
| | - Luc Van Kaer
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Sebastian Joyce
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN, United States.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
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28
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Kumar A, Gordy LE, Bezbradica JS, Stanic AK, Hill TM, Boothby MR, Van Kaer L, Joyce S. NF-κB Protects NKT Cells from Tumor Necrosis Factor Receptor 1-induced Death. Sci Rep 2017; 7:15594. [PMID: 29142275 PMCID: PMC5688132 DOI: 10.1038/s41598-017-15461-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 10/18/2017] [Indexed: 01/19/2023] Open
Abstract
Semi-invariant natural killer T (NKT) cells are innate-like lymphocytes with immunoregulatory properties. NKT cell survival during development requires signal processing by activated RelA/NF-κB. Nonetheless, the upstream signal(s) integrated by NF-κB in developing NKT cells remains incompletely defined. We show that the introgression of Bcl-xL-coding Bcl2l1 transgene into NF-κB signalling-deficient IκBΔN transgenic mouse rescues NKT cell development and differentiation in this mouse model. We reasoned that NF-κB activation was protecting developing NKT cells from death signals emanating either from high affinity agonist recognition by the T cell receptor (TCR) or from a death receptor, such as tumor necrosis factor receptor 1 (TNFR1) or Fas. Surprisingly, the single and combined deficiency in PKC-θ or CARMA-1-the two signal transducers at the NKT TCR proximal signalling node-only partially recapitulated the NKT cell deficiency observed in IκBΔN tg mouse. Accordingly, introgression of the Bcl2l1 transgene into PKC-θ null mouse failed to rescue NKT cell development. Instead, TNFR1-deficiency, but not the Fas-deficiency, rescued NKT cell development in IκBΔN tg mice. Consistent with this finding, treatment of thymocytes with an antagonist of the inhibitor of κB kinase -which blocks downstream NF-κB activation- sensitized NKT cells to TNF-α-induced cell death in vitro. Hence, we conclude that signal integration by NF-κB protects developing NKT cells from death signals emanating from TNFR1, but not from the NKT TCR or Fas.
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Affiliation(s)
- Amrendra Kumar
- Veterans Administration Tennessee Valley Healthcare System, Nashville, USA
- Department of Pathology, Microbiology & Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Laura E Gordy
- Department of Pathology, Microbiology & Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Jelena S Bezbradica
- Department of Pathology, Microbiology & Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- The Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | - Aleksandar K Stanic
- Department of Pathology, Microbiology & Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Timothy M Hill
- Department of Pathology, Microbiology & Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY, 10996, USA
| | - Mark R Boothby
- Department of Pathology, Microbiology & Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Luc Van Kaer
- Department of Pathology, Microbiology & Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Sebastian Joyce
- Veterans Administration Tennessee Valley Healthcare System, Nashville, USA.
- Department of Pathology, Microbiology & Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
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Abstract
PURPOSE OF REVIEW Primary immunodeficiencies (PIDs) are inherited conditions where components of the immune system are missing or dysfunctional. Over 300 genes have been causally linked to monogenic forms of PID, including a number that regulate the actin cytoskeleton. The majority of cytoskeletal defects disrupt assembly and disassembly of filamentous actin in multiple immune cell lineages impacting functions such as cell migration and adhesion, pathogen uptake, intercellular communication, intracellular signalling, and cell division. RECENT FINDINGS In the past 24 months, new actin defects have been identified through next generation sequencing technologies. Substantial progress has also been made in understanding the pathogenic mechanisms that contribute to immunological dysfunction, and also how the cytoskeleton participates in normal physiological immune processes. SUMMARY This review summarises recent advances in the field, raising awareness of these conditions and our current understanding of their presentation. Description of further cases and new conditions will extend the clinical phenotype of actin-related disorders, and will promote the development of more effective and targeted therapies.
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30
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Alroqi FJ, Charbonnier LM, Keles S, Ghandour F, Mouawad P, Sabouneh R, Mohammed R, Almutairi A, Chou J, Massaad MJ, Geha RS, Baz Z, Chatila TA. DOCK8 Deficiency Presenting as an IPEX-Like Disorder. J Clin Immunol 2017; 37:811-819. [PMID: 29058101 DOI: 10.1007/s10875-017-0451-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 10/09/2017] [Indexed: 12/13/2022]
Abstract
PURPOSE The dedicator of cytokinesis 8 (DOCK8) deficiency is an autosomal recessive-combined immunodeficiency whose clinical spectra include recurrent infections, autoimmunity, malignancies, elevated serum IgE, eczema, and food allergies. Here, we report on patients with loss of function DOCK8 mutations with profound immune dysregulation suggestive of an immune dysregulation, polyendocrinopathy, enteropathy, X-linked (IPEX)-like disorder. METHODS Immunophenotyping of lymphocyte subpopulations and analysis of DOCK8 protein expression were evaluated by flow cytometry. T regulatory (Treg) cells were isolated by cell sorting, and their suppressive activity was analyzed by flow cytometry. Gene mutational analysis was performed by whole-exome and Sanger sequencing. RESULTS Patient 1 (P1) presented at 10 months of age with chronic severe diarrhea and active colitis in the absence of an infectious trigger, severe eczema with elevated serum IgE, and autoimmune hemolytic anemia, suggestive of an IPEX-related disorder. Whole-exome sequencing revealed a homozygous nonsense mutation in DOCK8 at the DOCK-homology region (DHR)-1 (c.1498C>T; p. R500X). Patient P2, a cousin of P1 who carries the same DOCK8 nonsense mutation, presented with eczema and recurrent ear infections in early infancy, and she developed persistent diarrhea by 3 years of age. Patient P3 presented with lymphoproliferation, severe eczema with allergic dysregulation, and chronic diarrhea with colitis. She harbored a homozygous loss of function DOCK8 mutation (c.2402 -1G→A). Treg cell function was severely compromised by both DOCK8 mutations. CONCLUSION DOCK8 deficiency may present severe immune dysregulation with features that may overlap with those of IPEX and other IPEX-like disorders.
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Affiliation(s)
- Fayhan J Alroqi
- Division of Immunology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Karp Family Building, Room 10-214. 1 Blackfan Street, Boston, MA, 02115, USA
- Department of Pediatrics, King Abdulaziz Medical City, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Louis-Marie Charbonnier
- Division of Immunology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Karp Family Building, Room 10-214. 1 Blackfan Street, Boston, MA, 02115, USA
| | - Sevgi Keles
- Division of Pediatric Allergy and Immunology, Necmettin Erbakan University, Konya, Turkey
| | - Fatima Ghandour
- Department of Pathology, St George Hospital University Medical Center, Beirut, Lebanon
| | - Pierre Mouawad
- Department of Pediatrics, St George Hospital University Medical Center, Beirut, Lebanon
| | - Rami Sabouneh
- Department of Pediatrics, St George Hospital University Medical Center, Beirut, Lebanon
| | - Reem Mohammed
- Department of Pediatrics, King Abdulaziz Medical City, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Abduarahman Almutairi
- Department of Pediatrics, King Abdulaziz Medical City, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Janet Chou
- Division of Immunology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Karp Family Building, Room 10-214. 1 Blackfan Street, Boston, MA, 02115, USA
| | - Michel J Massaad
- Division of Immunology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Karp Family Building, Room 10-214. 1 Blackfan Street, Boston, MA, 02115, USA
| | - Raif S Geha
- Division of Immunology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Karp Family Building, Room 10-214. 1 Blackfan Street, Boston, MA, 02115, USA
| | - Zeina Baz
- Department of Pediatrics, St George Hospital University Medical Center, Beirut, Lebanon
| | - Talal A Chatila
- Division of Immunology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Karp Family Building, Room 10-214. 1 Blackfan Street, Boston, MA, 02115, USA.
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31
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Singh AK, Eken A, Hagin D, Komal K, Bhise G, Shaji A, Arkatkar T, Jackson SW, Bettelli E, Torgerson TR, Oukka M. DOCK8 regulates fitness and function of regulatory T cells through modulation of IL-2 signaling. JCI Insight 2017; 2:94275. [PMID: 28978795 DOI: 10.1172/jci.insight.94275] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 08/29/2017] [Indexed: 11/17/2022] Open
Abstract
Foxp3+ Tregs possess potent immunosuppressive activity, which is critical for maintaining immune homeostasis and self-tolerance. Defects in Treg development or function result in inadvertent immune activation and autoimmunity. Despite recent advances in Treg biology, we still do not completely understand the molecular and cellular mechanisms governing the development and suppressive function of these cells. Here, we have demonstrated an essential role of the dedicator of cytokinesis 8 (DOCK8), guanine nucleotide exchange factors required for cytoskeleton rearrangement, cell migration, and immune cell survival in controlling Treg fitness and their function. Treg-specific DOCK8 deletion led to spontaneous multiorgan inflammation in mice due to uncontrolled T cell activation and production of proinflammatory cytokines. In addition, we show that DOCK8-deficient Tregs are defective in competitive fitness and in vivo suppressive function. Furthermore, DOCK8 controls IL-2 signaling, crucial for maintenance and competitive fitness of Tregs, via a STAT5-dependent manner. Our study provides potentially novel insights into the essential function of DOCK8 in Tregs and immune regulation, and it explains the autoimmune manifestations associated with DOCK8 deficiency.
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Affiliation(s)
- Akhilesh K Singh
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, Washington, USA
| | - Ahmet Eken
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, Washington, USA
| | - David Hagin
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, Washington, USA
| | - Khushbu Komal
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, Washington, USA
| | - Gauri Bhise
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, Washington, USA
| | - Azima Shaji
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, Washington, USA
| | - Tanvi Arkatkar
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, Washington, USA
| | - Shaun W Jackson
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, Washington, USA
| | - Estelle Bettelli
- Benaroya Research Institute, Immunology Program, Seattle, Washington, USA
| | - Troy R Torgerson
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, Washington, USA.,Department of Pediatrics and
| | - Mohamed Oukka
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, Washington, USA.,Department of Pediatrics and.,Department of Immunology, University of Washington, Seattle, Washington, USA
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32
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Kearney CJ, Vervoort SJ, Ramsbottom KM, Freeman AJ, Michie J, Peake J, Casanova JL, Picard C, Tangye SG, Ma CS, Johnstone RW, Randall KL, Oliaro J. DOCK8 Drives Src-Dependent NK Cell Effector Function. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2017; 199:ji1700751. [PMID: 28794229 DOI: 10.4049/jimmunol.1700751] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 07/12/2017] [Indexed: 01/05/2023]
Abstract
Mutations in the dedicator of cytokinesis 8 (DOCK8) gene cause an autosomal recessive form of hyper-IgE syndrome, characterized by chronic immunodeficiency with persistent microbial infection and increased incidence of malignancy. These manifestations suggest a defect in cytotoxic lymphocyte function and immune surveillance. However, how DOCK8 regulates NK cell-driven immune responses remains unclear. In this article, we demonstrate that DOCK8 regulates NK cell cytotoxicity and cytokine production in response to target cell engagement or receptor ligation. Genetic ablation of DOCK8 in human NK cells attenuated cytokine transcription and secretion through inhibition of Src family kinase activation, particularly Lck, downstream of target cell engagement or NKp30 ligation. PMA/Ionomycin treatment of DOCK8-deficient NK cells rescued cytokine production, indicating a defect proximal to receptor ligation. Importantly, NK cells from DOCK8-deficient patients had attenuated production of IFN-γ and TNF-α upon NKp30 stimulation. Taken together, we reveal a novel molecular mechanism by which DOCK8 regulates NK cell-driven immunity.
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Affiliation(s)
- Conor J Kearney
- Immune Defence Laboratory, Cancer Immunology Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia
| | - Stephin J Vervoort
- Gene Regulation Laboratory, Cancer Therapeutics Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
| | - Kelly M Ramsbottom
- Immune Defence Laboratory, Cancer Immunology Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
| | - Andrew J Freeman
- Immune Defence Laboratory, Cancer Immunology Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
| | - Jessica Michie
- Immune Defence Laboratory, Cancer Immunology Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
| | - Jane Peake
- University of Queensland and Lady Cilento Children's Hospital, Brisbane, Queensland 4006, Australia
| | - Jean-Laurent Casanova
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Imagine Institute, Necker Medical School, University Paris Descartes, 75015 Paris, France
- Pediatric Hematology and Immunology Unit, Necker Hospital for Sick Children, AP-HP, Paris, France
- St. Giles Laboratory of Human Genetics and Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065
- Howard Hughes Medical Institute, New York, NY 10065
| | - Capucine Picard
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Imagine Institute, Necker Medical School, University Paris Descartes, 75015 Paris, France
- St. Giles Laboratory of Human Genetics and Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065
- Study Center for Primary Immunodeficiencies, Necker Hospital for Sick Children, AP-HP, 75015 Paris, France
| | - Stuart G Tangye
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, New South Wales 2010, Australia
- St. Vincent's Clinical School, University of New South Wales, New South Wales 2052, Australia
| | - Cindy S Ma
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, New South Wales 2010, Australia
- St. Vincent's Clinical School, University of New South Wales, New South Wales 2052, Australia
| | - Ricky W Johnstone
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia
- Gene Regulation Laboratory, Cancer Therapeutics Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia
| | - Katrina L Randall
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, Australian National University, Acton, Australian Capital Territory 2601, Australia; and
- Australian National University Medical School, Australian National University, Acton, Australian Capital Territory 2601, Australia
| | - Jane Oliaro
- Immune Defence Laboratory, Cancer Immunology Division, Peter MacCallum Cancer Centre, Melbourne, Victoria 3000, Australia;
- Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia
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33
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Dimitrova D, Freeman AF. Current Status of Dedicator of Cytokinesis-Associated Immunodeficiency: DOCK8 and DOCK2. Dermatol Clin 2017; 35:11-19. [PMID: 27890234 DOI: 10.1016/j.det.2016.07.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
DOCK8 deficiency is an autosomal recessive combined immunodeficiency disease associated with elevated IgE, atopy, recurrent sinopulmonary and cutaneous viral infections, and malignancy. The DOCK8 protein is critical for cytoskeletal organization, and deficiency impairs dendritic cell transmigration, T-cell survival, and NK cell cytotoxicity. Early hematopoietic stem cell transplantation is gaining prominence as a definitive treatment given the potential for severe complications and mortality in this disease. Recently, DOCK2 deficiency has been identified in several patients with early-onset invasive bacterial and viral infections.
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Affiliation(s)
- Dimana Dimitrova
- Experimental Transplantation and Immunology Branch, National Cancer Institute, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
| | - Alexandra F Freeman
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA.
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34
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Waide EH, Tuggle CK, Serão NVL, Schroyen M, Hess A, Rowland RRR, Lunney JK, Plastow G, Dekkers JCM. Genomewide association of piglet responses to infection with one of two porcine reproductive and respiratory syndrome virus isolates. J Anim Sci 2017; 95:16-38. [PMID: 28177360 DOI: 10.2527/jas.2016.0874] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Porcine reproductive and respiratory syndrome (PRRS) is a devastating disease in the swine industry. Identification of host genetic factors that enable selection for improved performance during PRRS virus (PRRSV) infection would reduce the impact of this disease on animal welfare and production efficiency. We conducted genomewide association study (GWAS) analyses of data from 13 trials of approximately 200 commercial crossbred nursery-age piglets that were experimentally infected with 1 of 2 type 2 isolates of PRRSV (NVSL 97-7985 [NVSL] and KS2006-72109 [KS06]). Phenotypes analyzed were viral load (VL) in blood during the first 21 d after infection (dpi) and weight gain (WG) from 0 to 42 dpi. We accounted for the previously identified QTL in the region on SSC4 in our models to increase power to identify additional regions. Many regions identified by single-SNP analyses were not identified using Bayes-B, but both analyses identified the same regions on SSC3 and SSC5 to be associated with VL in the KS06 trials and on SSC6 in the NVSL trials ( < 5 × 10); for WG, regions on SSC5 and SSC17 were associated in the NVSL trials ( < 3 × 10). No regions were identified with either method for WG in the KS06 trials. Except for the region on SSC4, which was associated with VL for both isolates (but only with WG for NVSL), identified regions did not overlap between the 2 PRRSV isolate data sets, despite high estimates of the genetic correlation between isolates for traits based on these data. We also identified genomic regions whose associations with VL or WG interacted with either PRRSV isolate or with genotype at the SSC4 QTL. Gene ontology (GO) annotation terms for genes located near moderately associated SNP ( < 0.003) were enriched for multiple immunologically (VL) and metabolism- (WG) related GO terms. The biological relevance of these regions suggests that, although it may increase the number of false positives, the use of single-SNP analyses and a relaxed threshold also increased the identification of true positives. In conclusion, although only the SSC4 QTL was associated with response to both PRRSV isolates, genes near associated SNP were enriched for the same GO terms across PRRSV isolates, suggesting that host responses to these 2 isolates are affected by the actions of many genes that function together in similar biological processes.
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35
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Kearney CJ, Randall KL, Oliaro J. DOCK8 regulates signal transduction events to control immunity. Cell Mol Immunol 2017; 14:406-411. [PMID: 28366940 DOI: 10.1038/cmi.2017.9] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 02/05/2017] [Accepted: 02/06/2017] [Indexed: 02/07/2023] Open
Abstract
Genetic mutations in the gene encoding DOCK8 cause an autosomal recessive form of hyper immunoglobulin E syndrome (AR-HIES), referred to as DOCK8 deficiency. DOCK8 deficiency in humans results in the onset of combined immunodeficiency disease (CID), clinically associated with chronic infections with diverse microbial pathogens, and a predisposition to malignancy. It is now becoming clear that DOCK8 regulates the function of diverse immune cell sub-types, particularly lymphocytes, to drive both innate and adaptive immune responses. Early studies demonstrated that DOCK8 is required for lymphocyte survival, migration and immune synapse formation, which translates to poor pathogen control in the absence of DOCK8. However, more recent advances have pointed to a crucial role for DOCK8 in regulating the signal transduction events that control transcriptional activity, cytokine production and functional polarization of immune cells. Here, we summarize recent advances in our understanding of DOCK8 function, paying particular attention to an emerging role as a signaling intermediate to promote immune responses to diverse external stimuli.
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Affiliation(s)
- Conor J Kearney
- Immune Defence Laboratory, Cancer Immunology Division, The Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia
| | - Katrina L Randall
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, Australian National University, Acton, Australian Capital Territory 2601, Australia.,Australian National University Medical School, Australian National University, Acton, Australian Capital Territory 2605, Australia
| | - Jane Oliaro
- Immune Defence Laboratory, Cancer Immunology Division, The Peter MacCallum Cancer Centre, East Melbourne, Victoria 3002, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia
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36
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Tangye SG, Pillay B, Randall KL, Avery DT, Phan TG, Gray P, Ziegler JB, Smart JM, Peake J, Arkwright PD, Hambleton S, Orange J, Goodnow CC, Uzel G, Casanova JL, Lugo Reyes SO, Freeman AF, Su HC, Ma CS. Dedicator of cytokinesis 8-deficient CD4 + T cells are biased to a T H2 effector fate at the expense of T H1 and T H17 cells. J Allergy Clin Immunol 2017; 139:933-949. [PMID: 27554822 PMCID: PMC10500883 DOI: 10.1016/j.jaci.2016.07.016] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 07/01/2016] [Accepted: 07/12/2016] [Indexed: 11/24/2022]
Abstract
BACKGROUND Dedicator of cytokinesis 8 (DOCK8) deficiency is a combined immunodeficiency caused by autosomal recessive loss-of-function mutations in DOCK8. This disorder is characterized by recurrent cutaneous infections, increased serum IgE levels, and severe atopic disease, including food-induced anaphylaxis. However, the contribution of defects in CD4+ T cells to disease pathogenesis in these patients has not been thoroughly investigated. OBJECTIVE We sought to investigate the phenotype and function of DOCK8-deficient CD4+ T cells to determine (1) intrinsic and extrinsic CD4+ T-cell defects and (2) how defects account for the clinical features of DOCK8 deficiency. METHODS We performed in-depth analysis of the CD4+ T-cell compartment of DOCK8-deficient patients. We enumerated subsets of CD4+ T helper cells and assessed cytokine production and transcription factor expression. Finally, we determined the levels of IgE specific for staple foods and house dust mite allergens in DOCK8-deficient patients and healthy control subjects. RESULTS DOCK8-deficient memory CD4+ T cells were biased toward a TH2 type, and this was at the expense of TH1 and TH17 cells. In vitro polarization of DOCK8-deficient naive CD4+ T cells revealed the TH2 bias and TH17 defect to be T-cell intrinsic. Examination of allergen-specific IgE revealed plasma IgE from DOCK8-deficient patients is directed against staple food antigens but not house dust mites. CONCLUSION Investigations into the DOCK8-deficient CD4+ T cells provided an explanation for some of the clinical features of this disorder: the TH2 bias is likely to contribute to atopic disease, whereas defects in TH1 and TH17 cells compromise antiviral and antifungal immunity, respectively, explaining the infectious susceptibility of DOCK8-deficient patients.
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Affiliation(s)
- Stuart G Tangye
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, Australia; St Vincent's Clinical School, University of New South Wales, Darlinghurst, Australia.
| | - Bethany Pillay
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, Australia; St Vincent's Clinical School, University of New South Wales, Darlinghurst, Australia
| | - Katrina L Randall
- Department of Immunology, John Curtin School of Medical Research, Acton, Australia; Australian National University Medical School, Australian National University, Acton, Australia
| | - Danielle T Avery
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, Australia
| | - Tri Giang Phan
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, Australia; St Vincent's Clinical School, University of New South Wales, Darlinghurst, Australia
| | - Paul Gray
- University of New South Wales School of Women's and Children's Health, Randwick, Australia
| | - John B Ziegler
- University of New South Wales School of Women's and Children's Health, Randwick, Australia
| | - Joanne M Smart
- Department of Allergy and Immunology, Royal Children's Hospital, Melbourne, Australia
| | - Jane Peake
- University of Queensland and Lady Cilento Children's Hospital, Brisbane, Australia
| | - Peter D Arkwright
- University of Manchester, Royal Manchester Children's Hospital, Manchester, United Kingdom
| | - Sophie Hambleton
- Institute of Cellular Medicine, Newcastle University and Great North Children's Hospital, Newcastle upon Tyne, United Kingdom
| | - Jordan Orange
- Center for Human Immunobiology of Texas Children's Hospital/Department of Pediatrics, Baylor College of Medicine; the Department of Pediatrics, Division of Immunology, Allergy, and Rheumatology, and the Department of Pediatrics, Baylor College of Medicine, and Texas Children's Hospital, Houston, Tex
| | - Christopher C Goodnow
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, Australia; St Vincent's Clinical School, University of New South Wales, Darlinghurst, Australia
| | - Gulbu Uzel
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Jean-Laurent Casanova
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, INSERM U1163, Institut IMAGINE, Necker Medical School, University Paris Descartes, Paris, France; Pediatric Hematology and Immunology Unit, Necker Hospital for Sick Children, AP-HP, Paris, France; St Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, Rockefeller University, New York, NY; Howard Hughes Medical Institute, New York, NY
| | | | - Alexandra F Freeman
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Helen C Su
- Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Cindy S Ma
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, Australia; St Vincent's Clinical School, University of New South Wales, Darlinghurst, Australia.
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Abstract
Eczema and urticaria are common disorders encountered in pediatric patients, but they may occasionally be the presenting complaint in a child with an underlying rare disease. Immunodeficiency syndromes should be suspected when eczema is associated with neonatal onset, recurrent infections, chronic lymphadenopathy, or failure to thrive. Nutritional deficiencies and mycosis fungoides are in the differential diagnosis for a child with a recalcitrant eczematous eruption. Autoinflammatory syndromes should be suspected in a child with chronic urticaria, fever, and other systemic signs of inflammation. Although these disorders are rare, early recognition allows for appropriate treatment and decreased morbidity for the child.
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Affiliation(s)
- Molly J Youssef
- Department of Dermatology, Medical College of Wisconsin, 9200 West Wisconsin Avenue, Milwaukee, WI 53226, USA
| | - Yvonne E Chiu
- Section of Pediatric Dermatology, Department of Dermatology, Medical College of Wisconsin, 9200 West Wisconsin Avenue, Milwaukee, WI 53226, USA; Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA.
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The transcription factor EPAS1 links DOCK8 deficiency to atopic skin inflammation via IL-31 induction. Nat Commun 2017; 8:13946. [PMID: 28067314 PMCID: PMC5228069 DOI: 10.1038/ncomms13946] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 11/16/2017] [Indexed: 12/20/2022] Open
Abstract
Mutations of DOCK8 in humans cause a combined immunodeficiency characterized by atopic dermatitis with high serum IgE levels. However, the molecular link between DOCK8 deficiency and atopic skin inflammation is unknown. Here we show that CD4+ T cells from DOCK8-deficient mice produce large amounts of IL-31, a major pruritogen associated with atopic dermatitis. IL-31 induction critically depends on the transcription factor EPAS1, and its conditional deletion in CD4+ T cells abrogates skin disease development in DOCK8-deficient mice. Although EPAS1 is known to form a complex with aryl hydrocarbon receptor nuclear translocator (ARNT) and control hypoxic responses, EPAS1-mediated Il31 promoter activation is independent of ARNT, but in collaboration with SP1. On the other hand, we find that DOCK8 is an adaptor and negative regulator of nuclear translocation of EPAS1. Thus, EPAS1 links DOCK8 deficiency to atopic skin inflammation via IL-31 induction in CD4+ T cells.
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Shiraishi A, Uruno T, Sanematsu F, Ushijima M, Sakata D, Hara T, Fukui Y. DOCK8 Protein Regulates Macrophage Migration through Cdc42 Protein Activation and LRAP35a Protein Interaction. J Biol Chem 2016; 292:2191-2202. [PMID: 28028174 DOI: 10.1074/jbc.m116.736306] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 12/25/2016] [Indexed: 11/06/2022] Open
Abstract
DOCK8 is an atypical guanine nucleotide exchange factor for Cdc42, and its mutations cause combined immunodeficiency in humans. Accumulating evidence indicates that DOCK8 regulates the migration and activation of various subsets of leukocytes, but its regulatory mechanism is poorly understood. We here report that DOCK8-deficient macrophages exhibit a migration defect in a 2D setting. Although DOCK8 deficiency in macrophages did not affect the global Cdc42 activation induced by chemokine stimulation, rescue experiments revealed that the guanine nucleotide exchange factor activity of DOCK8 was required for macrophage migration. We found that DOCK8 associated with LRAP35a, an adaptor molecule that binds to the Cdc42 effector myotonic dystrophy kinase-related Cdc42-binding kinase, and facilitated its activity to phosphorylate myosin II regulatory light chain. When this interaction was disrupted in WT macrophages, they showed a migration defect, as seen in DOCK8-deficient macrophages. These results suggest that, during macrophage migration, DOCK8 links Cdc42 activation to actomyosin dynamics through the association with LRAP35a.
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Affiliation(s)
- Akira Shiraishi
- From the Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation.,Department of Pediatrics, Graduate School of Medical Sciences, and
| | - Takehito Uruno
- From the Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation.,Research Center for Advanced Immunology, Kyushu University, Fukuoka 812-8582, Japan and
| | - Fumiyuki Sanematsu
- From the Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation.,Research Center for Advanced Immunology, Kyushu University, Fukuoka 812-8582, Japan and
| | - Miho Ushijima
- From the Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Daiji Sakata
- From the Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation
| | - Toshiro Hara
- the Fukuoka Children's Hospital, Fukuoka 813-0017, Japan
| | - Yoshinori Fukui
- From the Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, .,Research Center for Advanced Immunology, Kyushu University, Fukuoka 812-8582, Japan and
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Qin T, An Y, Liu C, Wu J, Dai R, Liu D, Li X, Jiang L, Wu D, Tang X, Song W, Wang T, Zhao X. Novel DOCK8 gene mutations lead to absence of protein expression in patients with hyper-IgE syndrome. Immunol Res 2016; 64:260-71. [PMID: 26659092 DOI: 10.1007/s12026-015-8745-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Autosomal recessive hyper-immunoglobulin E syndrome (AR-HIES) caused by DOCK8 defects is characterized by recurrent elevated serum IgE level, elevated peripheral eosinophil count, severe atopy, recurrent viral and bacterial infections, and early-onset malignancy. The clinical, genetic, and immunologic characteristics of DOCK8 mutations in Chinese patients have not been characterized in detail. In this research, we screened seven Chinese candidate patients for mutations within the DOCK8 gene and identified three large novel homozygous deletions and four novel point mutations by targeted deep sequencing. The homozygous deletions displayed autosomal recessive inheritance, and the point mutations were sporadic. Absence of DOCK8 protein was confirmed using flow cytometry and western blotting. Besides the typical clinical features and immunologic impairments of DIDS, proliferation of lymphocytes, cytotoxic function of NK cells, and expression of IL-10 in regulatory B cells were severely impaired in DOCK8 mutant patients which may be associated with abnormal immune responses in DIDS. These findings will contribute to the early diagnosis and treatment of DOCK8 patients.
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Affiliation(s)
- Tao Qin
- Research Center for Immunologic and Infectious diseases, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Yunfei An
- Division of Immunology; Research Center for Immunologic and Infectious Diseases; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Chaohong Liu
- Research Center for Immunologic and Infectious diseases, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Junfeng Wu
- Division of Immunology; Research Center for Immunologic and Infectious Diseases; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Rongxin Dai
- Research Center for Immunologic and Infectious diseases, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Dawei Liu
- Division of Immunology; Research Center for Immunologic and Infectious Diseases; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Xiaohui Li
- Research Center for Immunologic and Infectious diseases, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Liping Jiang
- Research Center for Immunologic and Infectious diseases, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Daoqi Wu
- Division of Immunology; Research Center for Immunologic and Infectious Diseases; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Xuemei Tang
- Division of Immunology; Research Center for Immunologic and Infectious Diseases; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Wenxia Song
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA
| | - Tao Wang
- Division of Immunology, Fujian Provincial Hospital, Fujian, 350001, China.
| | - Xiaodong Zhao
- Research Center for Immunologic and Infectious diseases, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China. .,Division of Immunology; Research Center for Immunologic and Infectious Diseases; Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China. .,Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, 400014, China.
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42
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Recent Advances in DOCK8 Immunodeficiency Syndrome. J Clin Immunol 2016; 36:441-9. [PMID: 27207373 DOI: 10.1007/s10875-016-0296-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 05/05/2016] [Indexed: 10/21/2022]
Abstract
Since the discovery of the genetic basis of DOCK8 immunodeficiency syndrome (DIDS) in 2009, several hundred patients worldwide have been reported, validating and extending the initial clinical descriptions. Importantly, the beneficial role of hematopoietic stem cell transplantation for this disease has emerged, providing impetus for improved diagnosis. Additionally, several groups have further elucidated the biological functions of DOCK8 in the immune system that help explain disease pathogenesis. Here, we summarize these recent developments.
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43
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Chemokines, their receptors and human disease: the good, the bad and the itchy. Immunol Cell Biol 2016; 93:364-71. [PMID: 25895814 DOI: 10.1038/icb.2015.23] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 01/30/2015] [Indexed: 02/04/2023]
Abstract
Chemokines are a highly specialized group of cytokines that coordinate trafficking and homing of leucocytes between bone marrow, lymphoid organs and sites of infection or inflammation. They are also responsible for structural organization within lymphoid organs. Aberrant expression or function of these molecules, or their receptors, has been linked to protection or susceptibility to specific infectious diseases, as well as the risk of autoimmune disease and malignancy, revealing critical roles of chemokines and their receptors in human health, disease and therapeutics. In this review, we focus on human diseases that provide lessons regarding the critical role of these specialized and complex cytokines.
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44
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Janssen WJM, Geluk HCA, Boes M. F-actin remodeling defects as revealed in primary immunodeficiency disorders. Clin Immunol 2016; 164:34-42. [PMID: 26802313 DOI: 10.1016/j.clim.2016.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 01/15/2016] [Accepted: 01/19/2016] [Indexed: 10/22/2022]
Abstract
Primary immunodeficiencies (PIDs) are a heterogeneous group of immune-related diseases. PIDs develop due to defects in gene-products that have consequences to immune cell function. A number of PID-proteins is involved in the remodeling of filamentous actin (f-actin) to support the generation of a contact zone between the antigen-specific T cell and antigen presenting cell (APC): the immunological synapse (IS). IS formation is the first step towards T-cell activation and essential for clonal expansion and acquisition of effector function. We here evaluated PIDs in which aberrant f-actin-driven IS formation may contribute to the PID disease phenotypes as seen in patients. We review examples of such contributions to PID phenotypes from literature, and highlight cases in which PID-proteins were evaluated for a role in f-actin polymerization and IS formation. We conclude with the proposition that patient groups might benefit from stratifying them in distinct functional groups in regard to their f-actin remodeling phenotypes in lymphocytes.
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Affiliation(s)
- W J M Janssen
- Laboratory of Translational Immunology, University Medical Center Utrecht, Wilhelmina Children's Hospital, Utrecht, The Netherlands
| | - H C A Geluk
- Laboratory of Translational Immunology, University Medical Center Utrecht, Wilhelmina Children's Hospital, Utrecht, The Netherlands
| | - M Boes
- Laboratory of Translational Immunology, University Medical Center Utrecht, Wilhelmina Children's Hospital, Utrecht, The Netherlands.
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45
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Arndt T, Wedekind D, Jörns A, Tsiavaliaris G, Cuppen E, Hedrich HJ, Lenzen S. A novel Dock8 gene mutation confers diabetogenic susceptibility in the LEW.1AR1/Ztm-iddm rat, an animal model of human type 1 diabetes. Diabetologia 2015; 58:2800-9. [PMID: 26363782 DOI: 10.1007/s00125-015-3757-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 08/24/2015] [Indexed: 02/04/2023]
Abstract
AIMS/HYPOTHESIS The LEW.1AR1-iddm rat, an animal model of human type 1 diabetes, arose through a spontaneous mutation within the inbred strain LEW.1AR1. A susceptibility locus (Iddm8) on rat chromosome 1 (RNO1) has been identified previously, which is accompanied by autoimmune diabetes and the additional phenotype of a variable CD3(+) T cell frequency. METHODS In the present study we characterised the Iddm8 region on RNO1 in backcross strains using the genetically divergent Brown Norway (BN) and Paris (PAR) rats. Candidate genes of the Iddm8 region were sequenced for mutation analysis. RESULTS The Iddm8 region could be subdivided by single nucleotide polymorphism (SNP) analyses. In the first region, a mutation in exon 44 of the Dock8 gene was identified resulting in an amino acid exchange in the protein from glutamine to glutamate. This exchange is unique for the LEW.1AR1-iddm rat. In the second region, a SNP was detected in exon 11 of the Vwa2 gene with an exchange from arginine to tryptophan. This SNP is also present in other rat strains. CONCLUSIONS/INTERPRETATION The Dock8 mutation gave rise to a new type 1 diabetes rat model with very close similarity to type 1 diabetes in humans, providing a deepened insight into the impact of genes involved in diabetes development.
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Affiliation(s)
- Tanja Arndt
- Institute of Clinical Biochemistry, Hannover Medical School, 30623, Hannover, Germany
| | - Dirk Wedekind
- Institute for Laboratory Animal Science, Hannover Medical School, 30623, Hannover, Germany.
| | - Anne Jörns
- Institute of Clinical Biochemistry, Hannover Medical School, 30623, Hannover, Germany
| | | | - Edwin Cuppen
- Centre for Biomedical Genetics, Hubrecht Institute, Utrecht, The Netherlands
| | - Hans-Jürgen Hedrich
- Institute for Laboratory Animal Science, Hannover Medical School, 30623, Hannover, Germany
| | - Sigurd Lenzen
- Institute of Clinical Biochemistry, Hannover Medical School, 30623, Hannover, Germany.
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46
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Pichard DC, Freeman AF, Cowen EW. Primary immunodeficiency update: Part I. Syndromes associated with eczematous dermatitis. J Am Acad Dermatol 2015; 73:355-64; quiz 365-6. [PMID: 26282794 DOI: 10.1016/j.jaad.2015.01.054] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 01/20/2015] [Accepted: 01/21/2015] [Indexed: 01/26/2023]
Abstract
In the past decade, the availability of powerful molecular techniques has accelerated the pace of discovery of several new primary immunodeficiencies (PIDs) and revealed the biologic basis of other established PIDs. These genetic advances, in turn, have facilitated more precise phenotyping of associated skin and systemic manifestations and provide a unique opportunity to better understand the complex human immunologic response. These continuing medical education articles will provide an update of recent advances in PIDs that may be encountered by dermatologists through their association with eczematous dermatitis, infectious, and non-infectious cutaneous manifestations. Part I will discuss new primary immunodeficiencies that have an eczematous dermatitis. Part II will focus on primary immunodeficiencies that greatly increase susceptibility to fungal infection and the noninfectious presentations of PIDs.
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Affiliation(s)
- Dominique C Pichard
- National Institutes of Health, National Cancer Institute, Bethesda, Maryland
| | | | - Edward W Cowen
- National Institutes of Health, National Cancer Institute, Bethesda, Maryland.
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47
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Abstract
PURPOSE OF REVIEW This review provides an overview on recent data regarding pathogenesis, diagnostics and clinical care of hyper-IgE syndromes (HIES). HIES are a group of primary immunodeficiencies with overlapping and distinct features, most frequently caused by deficiency in signal transducer and activator of transcription 3 (STAT3) or dedicator of cytokinesis 8 (DOCK8). RECENT FINDINGS Particular progress has been made in deciphering the relevance of STAT3 and DOCK8 for B-cell, T-cell and natural killer-cell immunity as well as in understanding allergic features. Multisystemic features of STAT3-deficient HIES, for example, recurrent fractures and osteopenia, a high degree of vasculopathy and brain white matter hyperintensities, have been thoroughly characterized. IgG replacement may add to the clinical care in STAT3-deficient HIES. In DOCK8-deficient HIES, the high morbidity and deaths in early age seem to justify allogeneic hematopoietic stem cell transplantation. New HIES entities have also been reported. SUMMARY The recent advances expand our understanding of HIES, and improve the diagnostics and clinical care. Yet, more research is required to fully elucidate the specific infection susceptibilities and lung complications, particularly in STAT3-deficient HIES. Future studies also need to focus on clinical care and treatment of nonimmunologic features of HIES, as well as on exploring curative treatments.
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48
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Dobbs K, Domínguez Conde C, Zhang SY, Parolini S, Audry M, Chou J, Haapaniemi E, Keles S, Bilic I, Okada S, Massaad MJ, Rounioja S, Alwahadneh AM, Serwas NK, Capuder K, Ciftci E, Felgentreff K, Ohsumi TK, Pedergnana V, Boisson B, Haskoloğlu S, Ensari A, Schuster M, Moretta A, Itan Y, Patrizi O, Rozenberg F, Lebon P, Saarela J, Knip M, Petrovski S, Goldstein DB, Parrott RE, Savas B, Schambach A, Tabellini G, Bock C, Chatila T, Comeau AM, Geha RS, Abel L, Buckley RH, Ikincioğullari A, Al-Herz W, Helminen M, Doğu F, Casanova JL, Boztuğ K, Notarangelo LD. Inherited DOCK2 Deficiency in Patients with Early-Onset Invasive Infections. N Engl J Med 2015; 372:2409-22. [PMID: 26083206 PMCID: PMC4480434 DOI: 10.1056/nejmoa1413462] [Citation(s) in RCA: 141] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background Combined immunodeficiencies are marked by inborn errors of T-cell immunity in which the T cells that are present are quantitatively or functionally deficient. Impaired humoral immunity is also common. Patients have severe infections, autoimmunity, or both. The specific molecular, cellular, and clinical features of many types of combined immunodeficiencies remain unknown. Methods We performed genetic and cellular immunologic studies involving five unrelated children with early-onset invasive bacterial and viral infections, lymphopenia, and defective T-cell, B-cell, and natural killer (NK)-cell responses. Two patients died early in childhood; after allogeneic hematopoietic stem-cell transplantation, the other three had normalization of T-cell function and clinical improvement. Results We identified biallelic mutations in the dedicator of cytokinesis 2 gene (DOCK2) in these five patients. RAC1 activation was impaired in the T cells. Chemokine-induced migration and actin polymerization were defective in the T cells, B cells, and NK cells. NK-cell degranulation was also affected. Interferon-α and interferon-λ production by peripheral-blood mononuclear cells was diminished after viral infection. Moreover, in DOCK2-deficient fibroblasts, viral replication was increased and virus-induced cell death was enhanced; these conditions were normalized by treatment with interferon alfa-2b or after expression of wild-type DOCK2. Conclusions Autosomal recessive DOCK2 deficiency is a new mendelian disorder with pleiotropic defects of hematopoietic and nonhematopoietic immunity. Children with clinical features of combined immunodeficiencies, especially with early-onset, invasive infections, may have this condition. (Supported by the National Institutes of Health and others.).
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Flesch IEA, Randall KL, Hollett NA, Di Law H, Miosge LA, Sontani Y, Goodnow CC, Tscharke DC. Delayed control of herpes simplex virus infection and impaired CD4(+) T-cell migration to the skin in mouse models of DOCK8 deficiency. Immunol Cell Biol 2015; 93:517-21. [PMID: 25776845 PMCID: PMC4496291 DOI: 10.1038/icb.2015.32] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 02/01/2015] [Accepted: 02/14/2015] [Indexed: 12/19/2022]
Abstract
DOCK8 deficiency in humans and mice leads to multiple defects in immune cell numbers and function. Patients with this immunodeficiency have a high morbidity and mortality, and are distinguished by chronic cutaneous viral infections, including those caused by herpes simplex virus (HSV). The underlying mechanism of the specific susceptibility to these chronic cutaneous viral infections is currently unknown, largely because the effect of DOCK8 deficiency has not been studied in suitable models. A better understanding of these mechanisms is required to underpin the development of more specific therapies. Here we show that DOCK8-deficient mice have poor control of primary cutaneous herpes simplex lesions and this is associated with increased virus loads. Furthermore, DOCK8-deficient mice showed a lack of CD4(+) T-cell infiltration into HSV-infected skin.
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Affiliation(s)
- Inge E A Flesch
- Research School of Biology, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Katrina L Randall
- 1] John Curtin School of Medical Research, Australian National University, Canberra, Australian Capital Territory, Australia [2] ANU Medical School, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Natasha A Hollett
- Research School of Biology, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Hsei Di Law
- 1] John Curtin School of Medical Research, Australian National University, Canberra, Australian Capital Territory, Australia [2] ANU Medical School, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Lisa A Miosge
- John Curtin School of Medical Research, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Yovina Sontani
- John Curtin School of Medical Research, Australian National University, Canberra, Australian Capital Territory, Australia
| | - Christopher C Goodnow
- John Curtin School of Medical Research, Australian National University, Canberra, Australian Capital Territory, Australia
| | - David C Tscharke
- Research School of Biology, Australian National University, Canberra, Australian Capital Territory, Australia
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50
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Kim EY, Lynch L, Brennan PJ, Cohen NR, Brenner MB. The transcriptional programs of iNKT cells. Semin Immunol 2015; 27:26-32. [PMID: 25841627 PMCID: PMC6322908 DOI: 10.1016/j.smim.2015.02.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 02/13/2015] [Accepted: 02/21/2015] [Indexed: 11/21/2022]
Abstract
Invariant natural killer T (iNKT) cells are innate T cells that express a semi-invariant T cell receptor (TCR) and recognize lipid antigens presented by CD1d molecules. As part of innate immunity, iNKT cells rapidly produce large amounts of cytokines after activation and regulate the function of innate and adaptive immune cells in antimicrobial immunity, tumor rejection and inflammatory diseases. Global transcriptional profiling has advanced our understanding of all aspects of iNKT cell biology. In this review, we discuss transcriptional analyses of iNKT cell development, functional subsets of iNKT cells, and global comparisons of iNKT cells to other innate and adaptive immune cells. Global transcriptional analysis revealed that iNKT cells have a transcriptional profile distinct from NK cells and MHC-restricted T cells, both during thymic development and in the periphery. The transcription factors EGR2 and PLZF (and microRNA like miR-150) are key regulators of the iNKT cell transcriptome during development. PLZF is one of several factors that control the homing and maintenance of organ-specific iNKT cell populations. As in MHC-restricted T cells, specific transcription factors are characteristic of functional subsets of iNKT cells, such as the transcription factor T-bet in the NKT1 subset. Exciting future directions for global transcriptional analyses include iNKT cells in disease models, diverse NKT cells and human studies.
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Affiliation(s)
- Edy Y Kim
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, 15 Francis Street, Boston, MA 02115, United States; Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Smith Building, 5th Floor, 1 Jimmy Fund Way, Boston, MA 02115, United States.
| | - Lydia Lynch
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Smith Building, 5th Floor, 1 Jimmy Fund Way, Boston, MA 02115, United States; Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, 221 Longwood Avenue, Boston, MA 02115, United States.
| | - Patrick J Brennan
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Smith Building, 5th Floor, 1 Jimmy Fund Way, Boston, MA 02115, United States.
| | - Nadia R Cohen
- Howard Hughes Medical Institute, Wyss Institute for Biologically Inspired Engineering at Harvard University, 5(th) floor, 3 Blackfan Circle, Boston, MA 02115, United States.
| | - Michael B Brenner
- Division of Rheumatology, Immunology and Allergy, Brigham and Women's Hospital, Smith Building, 5th Floor, 1 Jimmy Fund Way, Boston, MA 02115, United States.
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