1
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Staal J, Katarya K, Speelman M, Brand R, Alsma J, Sloane J, Van den Broek WW, Zwaan L. Impact of performance and information feedback on medical interns' confidence-accuracy calibration. Adv Health Sci Educ Theory Pract 2024; 29:129-145. [PMID: 37329493 DOI: 10.1007/s10459-023-10252-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 06/04/2023] [Indexed: 06/19/2023]
Abstract
Diagnostic errors are a major, largely preventable, patient safety concern. Error interventions cannot feasibly be implemented for every patient that is seen. To identify cases at high risk of error, clinicians should have a good calibration between their perceived and actual accuracy. This experiment studied the impact of feedback on medical interns' calibration and diagnostic process. In a two-phase experiment, 125 medical interns from Dutch University Medical Centers were randomized to receive no feedback (control), feedback on their accuracy (performance feedback), or feedback with additional information on why a certain diagnosis was correct (information feedback) on 20 chest X-rays they diagnosed in a feedback phase. A test phase immediately followed this phase and had all interns diagnose an additional 10 X-rays without feedback. Outcome measures were confidence-accuracy calibration, diagnostic accuracy, confidence, and time to diagnose. Both feedback types improved overall confidence-accuracy calibration (R2No Feedback = 0.05, R2Performance Feedback = 0.12, R2Information Feedback = 0.19), in line with the individual improvements in diagnostic accuracy and confidence. We also report secondary analyses to examine how case difficulty affected calibration. Time to diagnose did not differ between conditions. Feedback improved interns' calibration. However, it is unclear whether this improvement reflects better confidence estimates or an improvement in accuracy. Future research should examine more experienced participants and non-visual specialties. Our results suggest that feedback is an effective intervention that could be beneficial as a tool to improve calibration, especially in cases that are not too difficult for learners.
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Affiliation(s)
- J Staal
- Institute of Medical Education Research, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands.
| | - K Katarya
- Institute of Medical Education Research, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
- Faculty of Medical Sciences, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - M Speelman
- Department of Internal Medicine, Franciscus Gasthuis & Vlietland, Rotterdam, The Netherlands
| | - R Brand
- Intensive Care Unit, Haaglanden Medical Center Den Haag, The Hague, The Netherlands
| | - J Alsma
- Department of Internal Medicine, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - J Sloane
- Center for Innovations in Quality, Effectiveness and Safety, Michael E. DeBakey VA Medical Center and Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - W W Van den Broek
- Institute of Medical Education Research, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - L Zwaan
- Institute of Medical Education Research, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
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2
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Staal J, Driege Y, Van Gaever F, Steels J, Beyaert R. Chimeric and mutant CARD9 constructs enable analyses of conserved and diverged autoinhibition mechanisms in the CARD-CC protein family. FEBS J 2024; 291:1220-1245. [PMID: 38098267 DOI: 10.1111/febs.17035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 11/09/2023] [Accepted: 12/13/2023] [Indexed: 12/27/2023]
Abstract
Caspase recruitment domain-containing protein (CARD)9, CARD10, CARD11, and CARD14 all belong to the CARD-coiled coil (CC) protein family and originated from a single common ancestral protein early in vertebrate evolution. All four proteins form CARD-CC/BCL10/MALT1 (CBM) complexes leading to nuclear factor-kappa-B (NF-κB) activation after upstream phosphorylation by various protein kinase C (PKC) isoforms. CBM complex signaling is critical for innate and adaptive immunity, but aberrant activation can cause autoimmune or autoinflammatory diseases, or be oncogenic. CARD9 shows a superior auto-inhibition compared with other CARD-CC family proteins, with very low spontaneous activity when overexpressed in HEK293T cells. In contrast, the poor auto-inhibition of other CARD-CC family proteins, especially CARD10 (CARMA3) and CARD14 (CARMA2), is hampering characterization of upstream activators or activating mutations in overexpression studies. We grafted different domains from CARD10, 11, and 14 on CARD9 to generate chimeric CARD9 backbones for functional characterization of activating mutants using NF-κB reporter gene activation in HEK293T cells as readout. CARD11 (CARMA1) activity was not further reduced by grafting on CARD9 backbones. The chimeric CARD9 approach was subsequently validated by using several known disease-associated mutations in CARD10 and CARD14, and additional screening allowed us to identify several previously unknown activating natural variants in human CARD9 and CARD10. Using Genebass as a resource of exome-based disease association statistics, we found that activated alleles of CARD9 correlate with irritable bowel syndrome (IBS), constipation, osteoarthritis, fibromyalgia, insomnia, anxiety, and depression, which can occur as comorbidities.
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Affiliation(s)
- Jens Staal
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
- Department of Biochemistry and Microbiology, Ghent University, Belgium
| | - Yasmine Driege
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Femke Van Gaever
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Jill Steels
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Rudi Beyaert
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
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3
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Staal J, Blanco LP, Perl A. Editorial: Mitochondrial dysfunction in inflammation and autoimmunity. Front Immunol 2023; 14:1304315. [PMID: 37860005 PMCID: PMC10582977 DOI: 10.3389/fimmu.2023.1304315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 09/29/2023] [Indexed: 10/21/2023] Open
Affiliation(s)
- Jens Staal
- Unit of Molecular Signal Transduction in Inflammation, Flemmish Institute of Biotechnology (VIB)-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
| | - Luz Pamela Blanco
- The National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD, United States
| | - Andras Perl
- Department of Medicine, Upstate Medical University, Syracuse, NY, United States
- Department of Biochemistry and Molecular Biology, Upstate Medical University, Syracuse, NY, United States
- Department of Microbiology and Immunology, Upstate Medical University, Syracuse, NY, United States
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4
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Skordos I, Driege Y, Haegman M, Kreike M, Staal J, Demeyer A, Beyaert R. Normal lymphocyte homeostasis and function in
MALT1
protease‐resistant
HOIL
‐1 knock‐in mice. FEBS J 2022; 290:2032-2048. [PMID: 36479846 DOI: 10.1111/febs.16699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 11/23/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
The uniqueness of MALT1 protease activity in controlling several aspects of immunity in humans has made it a very attractive therapeutic target for multiple autoimmune diseases and lymphoid malignancies. Despite several encouraging preclinical studies with MALT1 inhibitors, severe reduction in regulatory T cells and immune-mediated pathology seen in MALT1 protease-dead (MALT1-PD) mice and some, but not all, studies analysing the effect of prolonged pharmacological MALT1 protease inhibition, indicates the need to further unravel the mechanism of MALT1 protease function. Notably, the contribution of individual MALT1 substrates to the immune defects seen in MALT1-PD mice is still unclear. Previous in vitro studies indicated a role for MALT1-mediated cleavage of the E3 ubiquitin ligase HOIL-1 in the modulation of nuclear factor-κB (NF-κB) signalling and inflammatory gene expression in lymphocytes. Here, we addressed the immunological consequences of inhibition of HOIL-1 cleavage by generating and immunophenotyping MALT1 cleavage-resistant HOIL-1 knock-in (KI) mice. HOIL-1 KI mice appear healthy and have no overt phenotype. NF-κB activation in T or B cells, as well as IL-2 production and in vitro T-cell proliferation, is comparable between control and HOIL-1 KI cells. Inhibition of HOIL-1 cleavage in mice has no effect on thymic T-cell development and conventional T-cell homeostasis. Likewise, B-cell development and humoral immune responses are not affected. Together, these data exclude an important role of MALT1-mediated HOIL-1 cleavage in T- and B-cell development and function in mice.
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Affiliation(s)
- Ioannis Skordos
- Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, VIB, Technologiepark‐Zwijnaarde 71, 9052 Ghent Belgium
- Department of Biomedical Molecular Biology Ghent University, Technologiepark‐Zwijnaarde 71 9052 Ghent Belgium
| | - Yasmine Driege
- Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, VIB, Technologiepark‐Zwijnaarde 71, 9052 Ghent Belgium
- Department of Biomedical Molecular Biology Ghent University, Technologiepark‐Zwijnaarde 71 9052 Ghent Belgium
| | - Mira Haegman
- Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, VIB, Technologiepark‐Zwijnaarde 71, 9052 Ghent Belgium
- Department of Biomedical Molecular Biology Ghent University, Technologiepark‐Zwijnaarde 71 9052 Ghent Belgium
| | - Marja Kreike
- Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, VIB, Technologiepark‐Zwijnaarde 71, 9052 Ghent Belgium
- Department of Biomedical Molecular Biology Ghent University, Technologiepark‐Zwijnaarde 71 9052 Ghent Belgium
| | - Jens Staal
- Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, VIB, Technologiepark‐Zwijnaarde 71, 9052 Ghent Belgium
- Department of Biomedical Molecular Biology Ghent University, Technologiepark‐Zwijnaarde 71 9052 Ghent Belgium
| | - Annelies Demeyer
- Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, VIB, Technologiepark‐Zwijnaarde 71, 9052 Ghent Belgium
- Department of Biomedical Molecular Biology Ghent University, Technologiepark‐Zwijnaarde 71 9052 Ghent Belgium
- Department of Head and Skin Ghent University, C. Heymanslaan 10 9000 Ghent Belgium
| | - Rudi Beyaert
- Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, VIB, Technologiepark‐Zwijnaarde 71, 9052 Ghent Belgium
- Department of Biomedical Molecular Biology Ghent University, Technologiepark‐Zwijnaarde 71 9052 Ghent Belgium
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5
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Naesens L, Muppala S, Acharya D, Nemegeer J, Bogaert D, Lee JH, Staes K, Debacker V, De Bleser P, De Bruyne M, De Baere E, van Gent M, Liu G, Lambrecht BN, Staal J, Kerre T, Beyaert R, Maelfait J, Tavernier SJ, Gack MU, Haerynck F. GTF3A mutations predispose to herpes simplex encephalitis by disrupting biogenesis of the host-derived RIG-I ligand RNA5SP141. Sci Immunol 2022; 7:eabq4531. [PMID: 36399538 PMCID: PMC10075094 DOI: 10.1126/sciimmunol.abq4531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Herpes simplex virus 1 (HSV-1) infects several billion people worldwide and can cause life-threatening herpes simplex encephalitis (HSE) in some patients. Monogenic defects in components of the type I interferon system have been identified in patients with HSE, emphasizing the role of inborn errors of immunity underlying HSE pathogenesis. Here, we identify compound heterozygous loss-of-function mutations in the gene GTF3A encoding for transcription factor IIIA (TFIIIA), a component of the RNA polymerase III complex, in a patient with common variable immunodeficiency and HSE. Patient fibroblasts and GTF3A gene-edited cells displayed impaired HSV-1-induced innate immune responses and enhanced HSV-1 replication. Chromatin immunoprecipitation sequencing analysis identified the 5S ribosomal RNA pseudogene 141 (RNA5SP141), an endogenous ligand of the RNA sensor RIG-I, as a transcriptional target of TFIIIA. GTF3A mutant cells exhibited diminished RNA5SP141 expression and abrogated RIG-I activation upon HSV-1 infection. Our work unveils a crucial role for TFIIIA in transcriptional regulation of a cellular RIG-I agonist and shows that GTF3A genetic defects lead to impaired cell-intrinsic anti-HSV-1 responses and can predispose to HSE.
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Affiliation(s)
- Leslie Naesens
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- Primary Immunodeficiency Research Lab, Center for Primary Immunodeficiency, Jeffrey Modell Diagnosis and Research Center, Ghent University Hospital, Ghent, Belgium
- Florida Research and Innovation Center, Cleveland Clinic, Port St Lucie, FL, USA
| | - Santoshi Muppala
- Florida Research and Innovation Center, Cleveland Clinic, Port St Lucie, FL, USA
| | - Dhiraj Acharya
- Florida Research and Innovation Center, Cleveland Clinic, Port St Lucie, FL, USA
- Department of Microbiology, University of Chicago, Chicago, IL, USA
| | - Josephine Nemegeer
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Laboratory of Molecular Signaling and Cell death, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Delfien Bogaert
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- Primary Immunodeficiency Research Lab, Center for Primary Immunodeficiency, Jeffrey Modell Diagnosis and Research Center, Ghent University Hospital, Ghent, Belgium
| | - Jung-Hyun Lee
- Florida Research and Innovation Center, Cleveland Clinic, Port St Lucie, FL, USA
- Department of Microbiology, University of Chicago, Chicago, IL, USA
| | - Katrien Staes
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Veronique Debacker
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- Primary Immunodeficiency Research Lab, Center for Primary Immunodeficiency, Jeffrey Modell Diagnosis and Research Center, Ghent University Hospital, Ghent, Belgium
| | - Pieter De Bleser
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Laboratory of Data Mining and Modeling for Biomedicine, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Marieke De Bruyne
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Elfride De Baere
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Michiel van Gent
- Florida Research and Innovation Center, Cleveland Clinic, Port St Lucie, FL, USA
- Department of Microbiology, University of Chicago, Chicago, IL, USA
| | - GuanQun Liu
- Florida Research and Innovation Center, Cleveland Clinic, Port St Lucie, FL, USA
- Department of Microbiology, University of Chicago, Chicago, IL, USA
| | - Bart N. Lambrecht
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- Laboratory of Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Jens Staal
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Laboratory of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Tessa Kerre
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- Department of Hematology, Jeffrey Modell Diagnosis and Research Center, Ghent University Hospital, Ghent, Belgium
| | - Rudi Beyaert
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Laboratory of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Jonathan Maelfait
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Laboratory of Molecular Signaling and Cell death, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Simon J. Tavernier
- Primary Immunodeficiency Research Lab, Center for Primary Immunodeficiency, Jeffrey Modell Diagnosis and Research Center, Ghent University Hospital, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
- Laboratory of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Michaela U. Gack
- Florida Research and Innovation Center, Cleveland Clinic, Port St Lucie, FL, USA
- Department of Microbiology, University of Chicago, Chicago, IL, USA
| | - Filomeen Haerynck
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- Primary Immunodeficiency Research Lab, Center for Primary Immunodeficiency, Jeffrey Modell Diagnosis and Research Center, Ghent University Hospital, Ghent, Belgium
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6
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Su J, Lu YJ, Staal J, Ludwików A. Editorial: Protein phosphorylation and dephosphorylation in plant-microbe interactions. Front Plant Sci 2022; 13:1020772. [PMID: 36160988 PMCID: PMC9504057 DOI: 10.3389/fpls.2022.1020772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 08/26/2022] [Indexed: 06/16/2023]
Affiliation(s)
- Jianbin Su
- Division of Plant Sciences, University of Missouri, Columbia, MO, United States
| | - Yi-Ju Lu
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI, United States
- Institute of Biochemistry, National Chung Hsing University, Taichung, Taiwan
- Department of Plant Pathology and Microbiology, National Taiwan University, Taipei, Taiwan
| | - Jens Staal
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Agnieszka Ludwików
- Laboratory of Biotechnology, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University, Poznan, Poland
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7
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Vanneste D, Staal J, Haegman M, Driege Y, Carels M, Van Nuffel E, De Bleser P, Saeys Y, Beyaert R, Afonina IS. CARD14 Signalling Ensures Cell Survival and Cancer Associated Gene Expression in Prostate Cancer Cells. Biomedicines 2022; 10:biomedicines10082008. [PMID: 36009554 PMCID: PMC9405774 DOI: 10.3390/biomedicines10082008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 11/21/2022] Open
Abstract
Prostate cancer (PCa) is one of the most common cancer types in men and represents an increasing global problem due to the modern Western lifestyle. The signalling adapter protein CARD14 is specifically expressed in epithelial cells, where it has been shown to mediate NF-κB signalling, but a role for CARD14 in carcinoma has not yet been described. By analysing existing cancer databases, we found that CARD14 overexpression strongly correlates with aggressive PCa in human patients. Moreover, we showed that CARD14 is overexpressed in the LNCaP PCa cell line and that knockdown of CARD14 severely reduces LNCaP cell survival. Similarly, knockdown of BCL10 and MALT1, which are known to form a signalling complex with CARD14, also induced LNCaP cell death. MALT1 is a paracaspase that mediates downstream signalling by acting as a scaffold, as well as a protease. Recent studies have already indicated a role for the scaffold function of MALT1 in PCa cell growth. Here, we also demonstrated constitutive MALT1 proteolytic activity in several PCa cell lines, leading to cleavage of A20 and CYLD. Inhibition of MALT1 protease activity did not affect PCa cell survival nor activation of NF-κB and JNK signalling, but reduced expression of cancer-associated genes, including the cytokine IL-6. Taken together, our results revealed a novel role for CARD14-induced signalling in regulating PCa cell survival and gene expression. The epithelial cell type-specific expression of CARD14 may offer novel opportunities for more specific therapeutic targeting approaches in PCa.
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Affiliation(s)
- Domien Vanneste
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, 9000 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Jens Staal
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, 9000 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Mira Haegman
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, 9000 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Yasmine Driege
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, 9000 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Marieke Carels
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, 9000 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Elien Van Nuffel
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, 9000 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Pieter De Bleser
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
- Unit of Data Mining and Modeling for Biomedicine, VIB-UGent Center for Inflammation Research, 9000 Ghent, Belgium
| | - Yvan Saeys
- Unit of Data Mining and Modeling for Biomedicine, VIB-UGent Center for Inflammation Research, 9000 Ghent, Belgium
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University, 9000 Ghent, Belgium
| | - Rudi Beyaert
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, 9000 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
- Correspondence:
| | - Inna S. Afonina
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, 9000 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
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8
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Kim SW, Alci K, Van Gaever F, Driege Y, Bicalho K, Goeminne G, Libert C, Goossens A, Beyaert R, Staal J. Engineering a highly sensitive biosensor for abscisic acid in mammalian cells. FEBS Lett 2022; 596:2576-2590. [PMID: 35727199 DOI: 10.1002/1873-3468.14431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 05/21/2022] [Accepted: 05/24/2022] [Indexed: 11/10/2022]
Abstract
Abscisic acid (ABA) is a signaling molecule conserved in plants, bacteria, fungi and animals. Recently, ABA has gained attention for its pharmacological activities and its potential as a biomarker for the severity of chronic obstructive pulmonary disease (COPD) and glioma. This prompts the development of a reliable, sensitive, rapid, and cost-effective method to quantify ABA levels in mammalian cells and tissues. The previously described ABA biosensor system based on the ABA-dependent interaction between the plant ABA receptor PYL1 and co-receptor ABI1 is not sensitive enough for the low ABA levels seen in mammals. Therefore, we optimized this system by replacing PYL1 with other high-affinity plant PYL proteins. The optimized biosensor system engineered with the PYL8 receptor enabled the quantification of ABA at low concentrations in HEK293T cells.
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Affiliation(s)
- Seo Woo Kim
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,Center for Plant Systems Biology, VIB, Ghent, Belgium.,Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Kübra Alci
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,BCCM/GeneCorner, Ghent University, Ghent, Belgium
| | - Femke Van Gaever
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Yasmine Driege
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | | | | | - Claude Libert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Alain Goossens
- Center for Plant Systems Biology, VIB, Ghent, Belgium.,Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Rudi Beyaert
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jens Staal
- Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
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9
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Staal J, Speelman M, Brand R, Alsma J, Zwaan L. Does a suggested diagnosis in a general practitioners' referral question impact diagnostic reasoning: an experimental study. BMC Med Educ 2022; 22:256. [PMID: 35395938 PMCID: PMC8991944 DOI: 10.1186/s12909-022-03325-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 03/29/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Diagnostic errors are a major cause of preventable patient harm. Studies suggest that presenting inaccurate diagnostic suggestions can cause errors in physicians' diagnostic reasoning processes. It is common practice for general practitioners (GPs) to suggest a diagnosis when referring a patient to secondary care. However, it remains unclear via which underlying processes this practice can impact diagnostic performance. This study therefore examined the effect of a diagnostic suggestion in a GP's referral letter to the emergency department on the diagnostic performance of medical interns. METHODS Medical interns diagnosed six clinical cases formatted as GP referral letters in a randomized within-subjects experiment. They diagnosed two referral letters stating a main complaint without a diagnostic suggestion (control), two stating a correct suggestion, and two stating an incorrect suggestion. The referral question and case order were randomized. We analysed the effect of the referral question on interns' diagnostic accuracy, number of differential diagnoses, confidence, and time taken to diagnose. RESULTS Forty-four medical interns participated. Interns considered more diagnoses in their differential without a suggested diagnosis (M = 1.85, SD = 1.09) than with a suggested diagnosis, independent of whether this suggestion was correct (M = 1.52, SD = 0.96, d = 0.32) or incorrect ((M = 1.42, SD = 0.97, d = 0.41), χ2(2) =7.6, p = 0.022). The diagnostic suggestion did not influence diagnostic accuracy (χ2(2) = 1.446, p = 0.486), confidence, (χ2(2) = 0.058, p = 0.971) or time to diagnose (χ2(2) = 3.128, p = 0.209). CONCLUSIONS A diagnostic suggestion in a GPs referral letter did not influence subsequent diagnostic accuracy, confidence, or time to diagnose for medical interns. However, a correct or incorrect suggestion reduced the number of diagnoses considered. It is important for healthcare providers and teachers to be aware of this phenomenon, as fostering a broad differential could support learning. Future research is necessary to examine whether these findings generalize to other healthcare workers, such as more experienced specialists or triage nurses, whose decisions might affect the diagnostic process later on. TRIAL REGISTRATION The study protocol was preregistered and is available online at Open Science Framework ( https://osf.io/7de5g ).
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Affiliation(s)
- J Staal
- Erasmus University Medical Center Rotterdam, Institute of Medical Education Research, Rotterdam, the Netherlands.
| | - M Speelman
- Erasmus University Medical Center Rotterdam, Institute of Medical Education Research, Rotterdam, the Netherlands
- Faculty of Medical Sciences, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - R Brand
- Intensive Care Unit, Haaglanden Medical Center Den Haag, The Hague, the Netherlands
| | - J Alsma
- Department of Internal Medicine, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - L Zwaan
- Erasmus University Medical Center Rotterdam, Institute of Medical Education Research, Rotterdam, the Netherlands
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10
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Pieters T, T’Sas S, Vanhee S, Almeida A, Driege Y, Roels J, Van Loocke W, Daneels W, Baens M, Marchand A, Van Trimpont M, Matthijssens F, Morscio J, Lemeire K, Lintermans B, Reunes L, Chaltin P, Offner F, Van Dorpe J, Hochepied T, Berx G, Beyaert R, Staal J, Van Vlierberghe P, Goossens S. Cyclin D2 overexpression drives B1a-derived MCL-like lymphoma in mice. J Exp Med 2021; 218:e20202280. [PMID: 34406363 PMCID: PMC8377631 DOI: 10.1084/jem.20202280] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 02/24/2021] [Accepted: 07/21/2021] [Indexed: 12/14/2022] Open
Abstract
Mantle cell lymphoma (MCL) is an aggressive B cell lymphoma with poor long-term overall survival. Currently, MCL research and development of potential cures is hampered by the lack of good in vivo models. MCL is characterized by recurrent translocations of CCND1 or CCND2, resulting in overexpression of the cell cycle regulators cyclin D1 or D2, respectively. Here, we show, for the first time, that hematopoiesis-specific activation of cyclin D2 is sufficient to drive murine MCL-like lymphoma development. Furthermore, we demonstrate that cyclin D2 overexpression can synergize with loss of p53 to form aggressive and transplantable MCL-like lymphomas. Strikingly, cyclin D2-driven lymphomas display transcriptional, immunophenotypic, and functional similarities with B1a B cells. These MCL-like lymphomas have B1a-specific B cell receptors (BCRs), show elevated BCR and NF-κB pathway activation, and display increased MALT1 protease activity. Finally, we provide preclinical evidence that inhibition of MALT1 protease activity, which is essential for the development of early life-derived B1a cells, can be an effective therapeutic strategy to treat MCL.
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MESH Headings
- Allografts
- Animals
- B-Lymphocytes/metabolism
- B-Lymphocytes/pathology
- Cyclin D2/genetics
- Cyclin D2/metabolism
- Gene Expression Regulation, Neoplastic
- Lymphoma, Mantle-Cell/drug therapy
- Lymphoma, Mantle-Cell/genetics
- Lymphoma, Mantle-Cell/pathology
- Mice, Inbred C57BL
- Mice, Transgenic
- Mucosa-Associated Lymphoid Tissue Lymphoma Translocation 1 Protein/antagonists & inhibitors
- Mucosa-Associated Lymphoid Tissue Lymphoma Translocation 1 Protein/metabolism
- Neoplasms, Experimental/drug therapy
- Neoplasms, Experimental/genetics
- Neoplasms, Experimental/pathology
- Neoplastic Cells, Circulating
- Tumor Suppressor Protein p53/genetics
- Xenograft Model Antitumor Assays
- Mice
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Affiliation(s)
- Tim Pieters
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University and University Hospital, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Sara T’Sas
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University and University Hospital, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Stijn Vanhee
- Center for Inflammation Research, Flemish Institute for Biotechnology, Ghent, Belgium
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - André Almeida
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University and University Hospital, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Yasmine Driege
- Center for Inflammation Research, Flemish Institute for Biotechnology, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Juliette Roels
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University and University Hospital, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Wouter Van Loocke
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University and University Hospital, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Willem Daneels
- Cancer Research Institute Ghent, Ghent, Belgium
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- Department of Hematology, Ghent University Hospital, Ghent, Belgium
| | - Mathijs Baens
- Center for Innovation and Stimulation of Drug Discovery Leuven, Leuven, Belgium
| | - Arnaud Marchand
- Center for Innovation and Stimulation of Drug Discovery Leuven, Leuven, Belgium
| | - Maaike Van Trimpont
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University and University Hospital, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Filip Matthijssens
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University and University Hospital, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Julie Morscio
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University and University Hospital, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Kelly Lemeire
- Center for Inflammation Research, Flemish Institute for Biotechnology, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Béatrice Lintermans
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University and University Hospital, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Lindy Reunes
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University and University Hospital, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Patrick Chaltin
- Center for Innovation and Stimulation of Drug Discovery Leuven, Leuven, Belgium
- Center for Drug Design and Discovery, Catholic University of Leuven, Leuven, Belgium
| | - Fritz Offner
- Cancer Research Institute Ghent, Ghent, Belgium
- Department of Hematology, Ghent University Hospital, Ghent, Belgium
| | - Jo Van Dorpe
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
- Department of Pathology, Ghent University Hospital, Ghent, Belgium
| | - Tino Hochepied
- Center for Inflammation Research, Flemish Institute for Biotechnology, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Geert Berx
- Cancer Research Institute Ghent, Ghent, Belgium
- Center for Inflammation Research, Flemish Institute for Biotechnology, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Rudi Beyaert
- Center for Inflammation Research, Flemish Institute for Biotechnology, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jens Staal
- Center for Inflammation Research, Flemish Institute for Biotechnology, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Pieter Van Vlierberghe
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University and University Hospital, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
| | - Steven Goossens
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Center for Medical Genetics, Ghent University and University Hospital, Ghent, Belgium
- Cancer Research Institute Ghent, Ghent, Belgium
- Department of Diagnostic Sciences, Ghent University, Ghent, Belgium
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11
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Staal J, Alsma J, Mamede S, Olson APJ, Prins-van Gilst G, Geerlings SE, Plesac M, Sundberg MA, Frens MA, Schmidt HG, Van den Broek WW, Zwaan L. The relationship between time to diagnose and diagnostic accuracy among internal medicine residents: a randomized experiment. BMC Med Educ 2021; 21:227. [PMID: 33882919 PMCID: PMC8061054 DOI: 10.1186/s12909-021-02671-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 04/08/2021] [Indexed: 05/02/2023]
Abstract
BACKGROUND Diagnostic errors have been attributed to cognitive biases (reasoning shortcuts), which are thought to result from fast reasoning. Suggested solutions include slowing down the reasoning process. However, slower reasoning is not necessarily more accurate than faster reasoning. In this study, we studied the relationship between time to diagnose and diagnostic accuracy. METHODS We conducted a multi-center within-subjects experiment where we prospectively induced availability bias (using Mamede et al.'s methodology) in 117 internal medicine residents. Subsequently, residents diagnosed cases that resembled those bias cases but had another correct diagnosis. We determined whether residents were correct, incorrect due to bias (i.e. they provided the diagnosis induced by availability bias) or due to other causes (i.e. they provided another incorrect diagnosis) and compared time to diagnose. RESULTS We did not successfully induce bias: no significant effect of availability bias was found. Therefore, we compared correct diagnoses to all incorrect diagnoses. Residents reached correct diagnoses faster than incorrect diagnoses (115 s vs. 129 s, p < .001). Exploratory analyses of cases where bias was induced showed a trend of time to diagnose for bias diagnoses to be more similar to correct diagnoses (115 s vs 115 s, p = .971) than to other errors (115 s vs 136 s, p = .082). CONCLUSIONS We showed that correct diagnoses were made faster than incorrect diagnoses, even within subjects. Errors due to availability bias may be different: exploratory analyses suggest a trend that biased cases were diagnosed faster than incorrect diagnoses. The hypothesis that fast reasoning leads to diagnostic errors should be revisited, but more research into the characteristics of cognitive biases is important because they may be different from other causes of diagnostic errors.
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Affiliation(s)
- J Staal
- Erasmus Medical Center Rotterdam, Institute of Medical Education Research Rotterdam, Rotterdam, The Netherlands.
| | - J Alsma
- Department of Internal Medicine, Erasmus Medical Center Rotterdam, Rotterdam, The Netherlands
| | - S Mamede
- Erasmus Medical Center Rotterdam, Institute of Medical Education Research Rotterdam, Rotterdam, The Netherlands
| | - A P J Olson
- Division of General Internal Medicine, University of Minnesota, Section of Hospital Medicine, Minneapolis, USA
| | - G Prins-van Gilst
- Department of Internal Medicine, Erasmus Medical Center Rotterdam, Rotterdam, The Netherlands
| | - S E Geerlings
- Department of Internal Medicine and Department of Infectious Diseases, Academic Medical Center Amsterdam, Amsterdam, The Netherlands
| | - M Plesac
- Division of General Internal Medicine, University of Minnesota, Section of Hospital Medicine, Minneapolis, USA
| | - M A Sundberg
- Division of General Internal Medicine, University of Minnesota, Section of Hospital Medicine, Minneapolis, USA
| | - M A Frens
- Department of Neuroscience, Erasmus Medical Center Rotterdam, Rotterdam, The Netherlands
| | - H G Schmidt
- Erasmus Medical Center Rotterdam, Institute of Medical Education Research Rotterdam, Rotterdam, The Netherlands
| | - W W Van den Broek
- Erasmus Medical Center Rotterdam, Institute of Medical Education Research Rotterdam, Rotterdam, The Netherlands
| | - L Zwaan
- Erasmus Medical Center Rotterdam, Institute of Medical Education Research Rotterdam, Rotterdam, The Netherlands
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12
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Demeyer A, Driege Y, Skordos I, Coudenys J, Lemeire K, Elewaut D, Staal J, Beyaert R. Long-Term MALT1 Inhibition in Adult Mice Without Severe Systemic Autoimmunity. iScience 2020; 23:101557. [PMID: 33083726 PMCID: PMC7522757 DOI: 10.1016/j.isci.2020.101557] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 09/02/2020] [Accepted: 09/10/2020] [Indexed: 12/22/2022] Open
Abstract
The protease MALT1 is a key regulator of NF-κB signaling and a novel therapeutic target in autoimmunity and cancer. Initial enthusiasm supported by preclinical results with MALT1 inhibitors was tempered by studies showing that germline MALT1 protease inactivation in mice results in reduced regulatory T cells and lethal multi-organ inflammation due to expansion of IFN-γ-producing T cells. However, we show that long-term MALT1 inactivation, starting in adulthood, is not associated with severe systemic inflammation, despite reduced regulatory T cells. In contrast, IL-2-, TNF-, and IFN-γ-producing CD4+ T cells were strongly reduced. Limited formation of tertiary lymphoid structures was detectable in lungs and stomach, which did not affect overall health. Our data illustrate that MALT1 inhibition in prenatal or adult life has a different outcome and that long-term MALT1 inhibition in adulthood is not associated with severe side effects. Inducible MALT1 inactivation for up to 6 months in the absence of severe toxicity MALT1 inactivation in adult mice decreases Tregs without effector T cell activation Long-term MALT1 inactivation results in tertiary lymphoid structure formation MALT1 inhibition in prenatal or adult life has a different outcome
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Affiliation(s)
- Annelies Demeyer
- Center for Inflammation Research, VIB, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium
| | - Yasmine Driege
- Center for Inflammation Research, VIB, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium
| | - Ioannis Skordos
- Center for Inflammation Research, VIB, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium
| | - Julie Coudenys
- Center for Inflammation Research, VIB, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium.,Department of Internal Medicine and Pediatrics, Ghent University, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium
| | - Kelly Lemeire
- Center for Inflammation Research, VIB, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium
| | - Dirk Elewaut
- Center for Inflammation Research, VIB, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium.,Department of Internal Medicine and Pediatrics, Ghent University, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium
| | - Jens Staal
- Center for Inflammation Research, VIB, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium
| | - Rudi Beyaert
- Center for Inflammation Research, VIB, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Technologiepark-Zwijnaarde 71, 9052 Ghent, Belgium
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13
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Staal J, Driege Y, Haegman M, Kreike M, Iliaki S, Vanneste D, Lork M, Afonina IS, Braun H, Beyaert R. Defining the combinatorial space of PKC::CARD‐CC signal transduction nodes. FEBS J 2020; 288:1630-1647. [DOI: 10.1111/febs.15522] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 07/12/2020] [Accepted: 07/30/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Jens Staal
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Yasmine Driege
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Mira Haegman
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Marja Kreike
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Styliani Iliaki
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Domien Vanneste
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Marie Lork
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Inna S. Afonina
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Harald Braun
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
| | - Rudi Beyaert
- Department of Biomedical Molecular Biology Ghent University Ghent Belgium
- Center for Inflammation Research Unit of Molecular Signal Transduction in Inflammation VIB Ghent Belgium
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14
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Béziat V, Tavernier SJ, Chen YH, Ma CS, Materna M, Laurence A, Staal J, Aschenbrenner D, Roels L, Worley L, Claes K, Gartner L, Kohn LA, De Bruyne M, Schmitz-Abe K, Charbonnier LM, Keles S, Nammour J, Vladikine N, Luxman Maglorius Renkilaraj MR, Seeleuthner Y, Migaud M, Rosain J, Jeljeli M, Boisson B, Van Braeckel E, Rosenfeld JA, Dai H, Burrage LC, Murdock DR, Lambrecht BN, Avettand-Fenoel V, Vogel TP, Network UD, Esther CR, Haskologlu S, Dogu F, Ciznar P, Boutboul D, Ouachée-Chardin M, Amourette J, Lebras MN, Gauvain C, Tcherakian C, Ikinciogullari A, Beyaert R, Abel L, Milner JD, Grimbacher B, Couderc LJ, Butte MJ, Freeman AF, Catherinot É, Fieschi C, Chatila TA, Tangye SG, Uhlig HH, Haerynck F, Casanova JL, Puel A. Correction: Dominant-negative mutations in human IL6ST underlie hyper-IgE syndrome. J Exp Med 2020; 217:151847. [PMID: 32516385 PMCID: PMC7336304 DOI: 10.1084/jem.2019180405272020c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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15
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Béziat V, Tavernier SJ, Chen YH, Ma CS, Materna M, Laurence A, Staal J, Aschenbrenner D, Roels L, Worley L, Claes K, Gartner L, Kohn LA, De Bruyne M, Schmitz-Abe K, Charbonnier LM, Keles S, Nammour J, Vladikine N, Maglorius Renkilaraj MRL, Seeleuthner Y, Migaud M, Rosain J, Jeljeli M, Boisson B, Van Braeckel E, Rosenfeld JA, Dai H, Burrage LC, Murdock DR, Lambrecht BN, Avettand-Fenoel V, Vogel TP, Esther CR, Haskologlu S, Dogu F, Ciznar P, Boutboul D, Ouachée-Chardin M, Amourette J, Lebras MN, Gauvain C, Tcherakian C, Ikinciogullari A, Beyaert R, Abel L, Milner JD, Grimbacher B, Couderc LJ, Butte MJ, Freeman AF, Catherinot É, Fieschi C, Chatila TA, Tangye SG, Uhlig HH, Haerynck F, Casanova JL, Puel A. Dominant-negative mutations in human IL6ST underlie hyper-IgE syndrome. J Exp Med 2020; 217:e20191804. [PMID: 32207811 PMCID: PMC7971136 DOI: 10.1084/jem.20191804] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 01/14/2020] [Accepted: 02/18/2020] [Indexed: 11/29/2022] Open
Abstract
Autosomal dominant hyper-IgE syndrome (AD-HIES) is typically caused by dominant-negative (DN) STAT3 mutations. Patients suffer from cold staphylococcal lesions and mucocutaneous candidiasis, severe allergy, and skeletal abnormalities. We report 12 patients from 8 unrelated kindreds with AD-HIES due to DN IL6ST mutations. We identified seven different truncating mutations, one of which was recurrent. The mutant alleles encode GP130 receptors bearing the transmembrane domain but lacking both the recycling motif and all four STAT3-recruiting tyrosine residues. Upon overexpression, the mutant proteins accumulate at the cell surface and are loss of function and DN for cellular responses to IL-6, IL-11, LIF, and OSM. Moreover, the patients' heterozygous leukocytes and fibroblasts respond poorly to IL-6 and IL-11. Consistently, patients with STAT3 and IL6ST mutations display infectious and allergic manifestations of IL-6R deficiency, and some of the skeletal abnormalities of IL-11R deficiency. DN STAT3 and IL6ST mutations thus appear to underlie clinical phenocopies through impairment of the IL-6 and IL-11 response pathways.
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Affiliation(s)
- Vivien Béziat
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Paris, France
- University of Paris, Imagine Institute, Paris, France
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY
| | - Simon J. Tavernier
- Primary Immune Deficiency Research Laboratory, Department of Internal Diseases and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium
- VIB-UGent Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, Ghent, Belgium
| | - Yin-Huai Chen
- Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford, Oxford, UK
- Department of Paediatrics, University of Oxford, Oxford, UK
| | - Cindy S. Ma
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, Sydney, New South Wales, Australia
- St. Vincent's Clinical School, UNSW Sydney, Sydney, New South Wales, Australia
| | - Marie Materna
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Paris, France
- University of Paris, Imagine Institute, Paris, France
| | - Arian Laurence
- Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford, Oxford, UK
- Department of Paediatrics, University of Oxford, Oxford, UK
| | - Jens Staal
- VIB-UGent Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, Ghent, Belgium
| | - Dominik Aschenbrenner
- Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford, Oxford, UK
- Department of Paediatrics, University of Oxford, Oxford, UK
| | - Lisa Roels
- Primary Immune Deficiency Research Laboratory, Department of Internal Diseases and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium
| | - Lisa Worley
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, Sydney, New South Wales, Australia
- St. Vincent's Clinical School, UNSW Sydney, Sydney, New South Wales, Australia
| | - Kathleen Claes
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Lisa Gartner
- Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford, Oxford, UK
- Department of Paediatrics, University of Oxford, Oxford, UK
| | - Lisa A. Kohn
- Division of Immunology, Allergy, and Rheumatology, Department of Pediatrics, University of California, Los Angeles, Los Angeles, CA
| | - Marieke De Bruyne
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Klaus Schmitz-Abe
- Division of Newborn Medicine and Neonatal Genomics Program, Boston Children's Hospital, Harvard Medical School, Boston, MA
- Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, Boston, MA
- The Manton Center for Orphan Disease Research, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Louis-Marie Charbonnier
- Department of Pediatrics, Harvard Medical School, Boston, MA
- Division of Immunology, Boston Children’s Hospital, Boston, MA
| | - Sevgi Keles
- Necmettin Erbakan University, Meram Medical Faculty, Division of Pediatric Allergy and Immunology, Konya, Turkey
| | - Justine Nammour
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Paris, France
- University of Paris, Imagine Institute, Paris, France
| | - Natasha Vladikine
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Paris, France
- University of Paris, Imagine Institute, Paris, France
| | - Majistor Raj Luxman Maglorius Renkilaraj
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Paris, France
- University of Paris, Imagine Institute, Paris, France
| | - Yoann Seeleuthner
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Paris, France
- University of Paris, Imagine Institute, Paris, France
| | - Mélanie Migaud
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Paris, France
- University of Paris, Imagine Institute, Paris, France
| | - Jérémie Rosain
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Paris, France
- University of Paris, Imagine Institute, Paris, France
| | - Mohamed Jeljeli
- Cochin University Hospital, Biological Immunology Unit, Assistance Publique Hôpitaux de Paris (AP-HP), Paris, France
| | - Bertrand Boisson
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Paris, France
- University of Paris, Imagine Institute, Paris, France
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY
| | - Eva Van Braeckel
- Department of Respiratory Medicine, Ghent University Hospital, Ghent Belgium
| | - Jill A. Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX
| | - Hongzheng Dai
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX
| | - Lindsay C. Burrage
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX
| | - David R. Murdock
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX
| | - Bart N. Lambrecht
- VIB-UGent Center for Inflammation Research, Unit of Immunoregulation and Mucosal Immunology, Ghent, Belgium
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - Véronique Avettand-Fenoel
- Laboratory of Clinical Microbiology, Virology Unit, Necker Hospital for Sick Children, AP-HP, Paris, France
| | - Tiphanie P. Vogel
- Division of Rheumatology, Department of Pediatrics, Baylor College of Medicine and Texas Children's Hospital, Houston, TX
| | | | - Charles R. Esther
- Pediatric Pulmonology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Sule Haskologlu
- Division of Pediatric Immunology and Allergy, Ankara University School of Medicine, Sıhhıye, Ankara, Turkey
| | - Figen Dogu
- Division of Pediatric Immunology and Allergy, Ankara University School of Medicine, Sıhhıye, Ankara, Turkey
| | - Peter Ciznar
- Department of Pediatrics, Faculty of Medicine Comenius University and Children's University Hospital, Bratislava, Slovakia
| | - David Boutboul
- Clinical Immunology Department, Saint Louis Hospital, AP-HP de Paris University of Paris, Paris, France
| | - Marie Ouachée-Chardin
- Department of Pediatric Hematology and Immunology, Robert Debré Hospital, AP-HP, Paris, France
| | - Jean Amourette
- Pulmonology Department, Centre Hospitalier d'Arras, Arras, France
| | - Marie-Noëlle Lebras
- Pediatric Pulmonology, Infectious Disease and Internal Medicine Department, AP-HP, Robert Debré Hospital, Paris, France
| | - Clément Gauvain
- Thoracic Oncology Department, Lille University Hospital, Lille, France
| | | | - Aydan Ikinciogullari
- Division of Pediatric Immunology and Allergy, Ankara University School of Medicine, Sıhhıye, Ankara, Turkey
| | - Rudi Beyaert
- VIB-UGent Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, Ghent, Belgium
| | - Laurent Abel
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Paris, France
- University of Paris, Imagine Institute, Paris, France
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY
| | - Joshua D. Milner
- National Institute of Allergy and Infectious Diseases, Bethesda, MD
- Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Columbia University Irving Medical Center, New York, NY
| | - Bodo Grimbacher
- Institute for Immunodeficiency, Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, Albert Ludwig University of Freiburg, Freiburg, Germany
- German Center for Infection Research, Satellite Center Freiburg, Freiburg, Germany
- Centre for Integrative Biological Signaling Studies, Albert Ludwig University, Freiburg, Germany
- RESIST, Cluster of Excellence 2155 to Hanover Medical School, Satellite Center Freiburg, Freiburg, Germany
- Institute of Immunity and Transplantation, Royal Free Hospital, University College London, London, UK
| | - Louis-Jean Couderc
- Hôpital Foch, Pulmonology Department, Suresnes, France
- Simone Veil Faculty of Life Sciences, Versailles-Paris Saclay University, UPRES EA-220, Suresnes, France
| | - Manish J. Butte
- Division of Immunology, Allergy, and Rheumatology, Department of Pediatrics, University of California, Los Angeles, Los Angeles, CA
| | | | | | - Claire Fieschi
- Clinical Immunology Department, Saint Louis Hospital, AP-HP de Paris University of Paris, Paris, France
- INSERM UMR1126, Institut de Recherche Saint-Louis, Université de Paris, Paris, France
| | - Talal A. Chatila
- Department of Pediatrics, Harvard Medical School, Boston, MA
- Division of Immunology, Boston Children’s Hospital, Boston, MA
| | - Stuart G. Tangye
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, Sydney, New South Wales, Australia
- St. Vincent's Clinical School, UNSW Sydney, Sydney, New South Wales, Australia
| | - Holm H. Uhlig
- Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford, Oxford, UK
- Department of Paediatrics, University of Oxford, Oxford, UK
| | - Filomeen Haerynck
- Primary Immune Deficiency Research Laboratory, Department of Internal Diseases and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium
- Department of Internal Medicine and Pediatrics, Division of Pediatric Immunology and Pulmonology, Ghent University Hospital, Ghent, Belgium
| | - Jean-Laurent Casanova
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Paris, France
- University of Paris, Imagine Institute, Paris, France
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY
- Pediatric Hematology-Immunology Unit, Necker Hospital for Sick Children, AP-HP, Paris, France
- Howard Hughes Medical Institute, New York, NY
| | - Anne Puel
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) U1163, Paris, France
- University of Paris, Imagine Institute, Paris, France
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY
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16
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Van Nuffel E, Staal J, Baudelet G, Haegman M, Driege Y, Hochepied T, Afonina IS, Beyaert R. MALT1 targeting suppresses CARD14-induced psoriatic dermatitis in mice. EMBO Rep 2020; 21:e49237. [PMID: 32343482 DOI: 10.15252/embr.201949237] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 03/27/2020] [Accepted: 03/31/2020] [Indexed: 12/16/2022] Open
Abstract
CARD14 gain-of-function mutations cause psoriasis in humans and mice. Together with BCL10 and the protease MALT1, mutant CARD14 forms a signaling node that mediates increased NF-κB signaling and proinflammatory gene expression in keratinocytes. However, it remains unclear whether psoriasis in response to CARD14 hyperactivation is keratinocyte-intrinsic or requires CARD14 signaling in other cells. Moreover, the in vivo effect of MALT1 targeting on mutant CARD14-induced psoriasis has not yet been documented. Here, we show that inducible keratinocyte-specific expression of CARD14E138A in mice rapidly induces epidermal thickening and inflammation as well as increased expression of several genes associated with psoriasis in humans. Keratinocyte-specific MALT1 deletion as well as oral treatment of mice with a specific MALT1 protease inhibitor strongly reduces psoriatic skin disease in CARD14E138A mice. Together, these data illustrate a keratinocyte-intrinsic causal role of enhanced CARD14/MALT1 signaling in the pathogenesis of psoriasis and show the potential of MALT1 inhibition for the treatment of psoriasis.
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Affiliation(s)
- Elien Van Nuffel
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jens Staal
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Griet Baudelet
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Mira Haegman
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Yasmine Driege
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Tino Hochepied
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Inna S Afonina
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Rudi Beyaert
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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17
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Minina EA, Staal J, Alvarez VE, Berges JA, Berman-Frank I, Beyaert R, Bidle KD, Bornancin F, Casanova M, Cazzulo JJ, Choi CJ, Coll NS, Dixit VM, Dolinar M, Fasel N, Funk C, Gallois P, Gevaert K, Gutierrez-Beltran E, Hailfinger S, Klemenčič M, Koonin EV, Krappmann D, Linusson A, Machado MFM, Madeo F, Megeney LA, Moschou PN, Mottram JC, Nyström T, Osiewacz HD, Overall CM, Pandey KC, Ruland J, Salvesen GS, Shi Y, Smertenko A, Stael S, Ståhlberg J, Suárez MF, Thome M, Tuominen H, Van Breusegem F, van der Hoorn RAL, Vardi A, Zhivotovsky B, Lam E, Bozhkov PV. Classification and Nomenclature of Metacaspases and Paracaspases: No More Confusion with Caspases. Mol Cell 2020; 77:927-929. [PMID: 32142688 PMCID: PMC7325697 DOI: 10.1016/j.molcel.2019.12.020] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 12/16/2019] [Accepted: 12/23/2019] [Indexed: 01/19/2023]
Affiliation(s)
- Elena A Minina
- Department of Molecular Sciences, Uppsala BioCenter, Swedish University of Agricultural Sciences and Linnean Center for Plant Biology, Uppsala, Sweden; COS, Heidelberg University, Heidelberg, Germany.
| | - Jens Staal
- VIB Center for Inflammation Research, Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Vanina E Alvarez
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martin, San Martin, Buenos Aires, Argentina
| | - John A Berges
- Department of Biological Sciences and School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Ilana Berman-Frank
- Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa, Israel
| | - Rudi Beyaert
- VIB Center for Inflammation Research, Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Kay D Bidle
- Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ, USA
| | | | - Magali Casanova
- Aix-Marseille Univ, CNRS, LISM, Institut de Microbiologie de la Méditerranée, Marseille, France
| | - Juan J Cazzulo
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martin, San Martin, Buenos Aires, Argentina
| | - Chang Jae Choi
- The University of Texas at Austin, Marine Science Institute, Port Aransas, TX, USA
| | - Nuria S Coll
- Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Campus UAB, Bellaterra, Barcelona, Spain
| | - Vishva M Dixit
- Department of Physiological Chemistry, Genentech, South San Francisco, CA, USA
| | - Marko Dolinar
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Ljubljana, Slovenia
| | - Nicolas Fasel
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | | | - Patrick Gallois
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Kris Gevaert
- VIB Center for Medical Biotechnology, Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Emilio Gutierrez-Beltran
- Instituto de Bioquímica Vegetal y Fotosíntesis, Universidad de Sevilla and Consejo Superior de Investigaciones Científicas, Sevilla, Spain
| | - Stephan Hailfinger
- Interfaculty Institute for Biochemistry, Eberhard Karls University, Tübingen, Germany
| | - Marina Klemenčič
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Ljubljana, Slovenia
| | - Eugene V Koonin
- National Center for Biotechnology Information, National Library of Medicine, Bethesda, MD, USA
| | - Daniel Krappmann
- Research Unit Cellular Signal Integration, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Anna Linusson
- Department of Chemistry, Umeå University, Umeå, Sweden
| | - Maurício F M Machado
- Interdisciplinary Center for Biochemical Research, University of Mogi das Cruzes, Mogi das Cruzes, Brazil
| | - Frank Madeo
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, BioTechMed Graz, Graz, Austria
| | - Lynn A Megeney
- Sprott Centre for Stem Cell Research, Ottawa Hospital Research Institute and Departments of Medicine and Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Panagiotis N Moschou
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology - Hellas, Heraklion, Greece; Department of Biology, University of Crete, Greece; Department of Plant Biology, Uppsala BioCenter, Swedish University of Agricultural Sciences and Linnean Center for Plant Biology, Uppsala, Sweden
| | - Jeremy C Mottram
- York Biomedical Research Institute, Department of Biology, University of York, York, UK
| | - Thomas Nyström
- Institute for Biomedicine, Sahlgrenska Academy, Centre for Ageing and Health - AgeCap, University of Gothenburg, Gothenburg, Sweden
| | - Heinz D Osiewacz
- Institute for Molecular Biosciences, Faculty of Biosciences, Goethe University, Frankfurt/Main, Germany
| | - Christopher M Overall
- Departments of Oral Biological and Medical Sciences and Biochemistry and Molecular Biology, Life Sciences Institute, University of British Columbia, Vancouver, BC, Canada
| | - Kailash C Pandey
- Protein Biochemistry and Engineering Laboratory, ICMR-National Institute of Malaria Research, New Delhi, India
| | - Jürgen Ruland
- Institute of Clinical Chemistry and Pathobiochemistry, School of Medicine, Technical University of Munich, Munich, Germany; German Cancer Consortium (DKTK), partner site Munich, Germany; German Center for Infection Research (DZIF), partner site Munich, Germany
| | - Guy S Salvesen
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Yigong Shi
- School of Life Sciences, Westlake University, Xihu District, Hangzhou Zhejiang Province, China
| | - Andrei Smertenko
- Institute of Biological Chemistry, Washington State University, Pullman, WA, USA
| | - Simon Stael
- VIB Center for Medical Biotechnology, Department of Biomolecular Medicine, Ghent University, Ghent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, VIB-UGent Center for Plant Systems Biology, Ghent, Belgium
| | - Jerry Ståhlberg
- Department of Molecular Sciences, Uppsala BioCenter, Swedish University of Agricultural Sciences and Linnean Center for Plant Biology, Uppsala, Sweden
| | - María Fernanda Suárez
- Departamento de Biologia Molecular y Bioquimica, Facultad de Ciencias, Universidad de Malaga, Campus de Teatinos, Malaga, Spain
| | - Margot Thome
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Hannele Tuominen
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
| | - Frank Van Breusegem
- Department of Plant Biotechnology and Bioinformatics, Ghent University, VIB-UGent Center for Plant Systems Biology, Ghent, Belgium
| | | | - Assaf Vardi
- Department of Plant and Environmental Sciences, Weizmann Institute of Science, Rehovot, Israel
| | - Boris Zhivotovsky
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Faculty of Fundamental Medicine, MV Lomonosov Moscow State University, Moscow, Russia
| | - Eric Lam
- Department of Plant Biology, Rutgers, The State University of New Jersey, New Brunswick, NJ USA
| | - Peter V Bozhkov
- Department of Molecular Sciences, Uppsala BioCenter, Swedish University of Agricultural Sciences and Linnean Center for Plant Biology, Uppsala, Sweden.
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18
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Kim SW, Goossens A, Libert C, Van Immerseel F, Staal J, Beyaert R. Phytohormones: Multifunctional nutraceuticals against metabolic syndrome and comorbid diseases. Biochem Pharmacol 2020; 175:113866. [PMID: 32088261 DOI: 10.1016/j.bcp.2020.113866] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 02/18/2020] [Indexed: 12/12/2022]
Abstract
Metabolic syndrome is characterized by the co-occurrence of diverse symptoms initiating the development of type 2 diabetes, cardiovascular diseases, and a variety of comorbid diseases. The complex constellation of numerous comorbidities makes it difficult to develop common therapeutic approaches that ameliorate these pathological features simultaneously. The plant hormones abscisic acid, salicylic acid, auxin, and cytokinins, have shown promising anti-inflammatory and pro-metabolic effects that could mitigate several disorders relevant to metabolic syndrome. Intriguingly, besides plants, human cells and gut microbes also endogenously produce these molecules, indicating a role in the complex interplay between inflammatory responses associated with metabolic syndrome, the gut microbiome, and nutrition. Here, we introduce how bioactive phytohormones can be generated endogenously and through the gut microbiome. These molecules subsequently influence immune responses and metabolism. We also elaborate on how phytohormones can beneficially modulate metabolic syndrome comorbidities, and propose them as nutraceuticals.
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Affiliation(s)
- Seo Woo Kim
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; VIB-UGent Center for Plant Systems Biology, VIB, Ghent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Alain Goossens
- VIB-UGent Center for Plant Systems Biology, VIB, Ghent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Claude Libert
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Filip Van Immerseel
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Jens Staal
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
| | - Rudi Beyaert
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
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19
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Braun H, Staal J. Stabilization of the TAK1 adaptor proteins TAB2 and TAB3 is critical for optimal NF-κB activation. FEBS J 2020; 287:3161-3164. [PMID: 31997570 DOI: 10.1111/febs.15210] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 01/09/2020] [Indexed: 02/06/2023]
Abstract
TAB2 and TAB3 bind to K63-linked polyubiquitin chains and recruit the critical kinase MAP3K7 (TAK1). The polyubiquitin-recruited TAK1/TAB2/TAB3 complex comes in close proximity with the IKK (IKKα/IKKβ/IKKγ) complex, which is recruited to M1-linked polyubiquitin chains via the IKKγ (NEMO) component. Together, the two complexes activate the NF-κB family of transcription factors. NF-κB transcription factors are critical mediators of pro-inflammatory signals and must be tightly regulated at multiple levels. Recently, it was discovered that one such point of regulation occurs at the level of TAB2 and TAB3 protein stability by the deubiquitinase USP15. Comment on: https://doi.org/10.1111/febs.15202.
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Affiliation(s)
- Harald Braun
- Department of Biomedical Molecular Biology, Ghent University, Belgium.,Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
| | - Jens Staal
- Department of Biomedical Molecular Biology, Ghent University, Belgium.,Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium.,Department of Biochemistry and Microbiology, Ghent University, Belgium
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20
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Tavernier SJ, Athanasopoulos V, Verloo P, Behrens G, Staal J, Bogaert DJ, Naesens L, De Bruyne M, Van Gassen S, Parthoens E, Ellyard J, Cappello J, Morris LX, Van Gorp H, Van Isterdael G, Saeys Y, Lamkanfi M, Schelstraete P, Dehoorne J, Bordon V, Van Coster R, Lambrecht BN, Menten B, Beyaert R, Vinuesa CG, Heissmeyer V, Dullaers M, Haerynck F. Author Correction: A human immune dysregulation syndrome characterized by severe hyperinflammation with a homozygous nonsense Roquin-1 mutation. Nat Commun 2019; 10:5337. [PMID: 31745085 PMCID: PMC6864049 DOI: 10.1038/s41467-019-13379-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- S J Tavernier
- Primary Immune Deficiency Research Lab, Department of Internal Medicine and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,VIB Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - V Athanasopoulos
- Department of Immunology and Infectious Disease and Center for Personalised Immunology (NHMRC Centre for Research Excellence), John Curtin School of Medical Research, Australian National University, Canberra, Australia.,Centre for Personalised Immunology (CACPI), Shanghai Renji Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - P Verloo
- Department of Internal Medicine and Pediatrics, Division of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent, Belgium
| | - G Behrens
- Institute for Immunology, Biomedical Center, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany.,Research Unit Molecular Immune Regulation, Helmholtz Zentrum München, Munich, Germany
| | - J Staal
- VIB Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - D J Bogaert
- Primary Immune Deficiency Research Lab, Department of Internal Medicine and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Department of Internal Medicine and Pediatrics, Division of Pediatric Immunology and Pulmonology, Ghent University Hospital, Ghent, Belgium
| | - L Naesens
- Primary Immune Deficiency Research Lab, Department of Internal Medicine and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent, Belgium
| | - M De Bruyne
- Primary Immune Deficiency Research Lab, Department of Internal Medicine and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - S Van Gassen
- VIB Center for Inflammation Research, Unit of Data Mining and Modeling for Biomedicine, Ghent, Belgium.,Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Gent, Belgium
| | - E Parthoens
- VIB Bioimaging Core, VIB Center for Inflammation Research, Ghent, Belgium
| | - J Ellyard
- Department of Immunology and Infectious Disease and Center for Personalised Immunology (NHMRC Centre for Research Excellence), John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - J Cappello
- Department of Immunology and Infectious Disease and Center for Personalised Immunology (NHMRC Centre for Research Excellence), John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - L X Morris
- The Australian Phenomics Facility, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - H Van Gorp
- Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent, Belgium.,VIB Center for Inflammation Research, Ghent, Belgium
| | - G Van Isterdael
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,VIB Flow Core, VIB Center for Inflammation Research, Ghent, Belgium
| | - Y Saeys
- VIB Center for Inflammation Research, Unit of Data Mining and Modeling for Biomedicine, Ghent, Belgium.,Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Gent, Belgium
| | - M Lamkanfi
- Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent, Belgium.,VIB Center for Inflammation Research, Ghent, Belgium
| | - P Schelstraete
- Department of Internal Medicine and Pediatrics, Division of Pediatric Immunology and Pulmonology, Ghent University Hospital, Ghent, Belgium
| | - J Dehoorne
- Department of Internal Medicine and Pediatrics, Division of Pediatric Rheumatology, Ghent University Hospital, Ghent, Belgium
| | - V Bordon
- Department of Internal Medicine and Pediatrics, Division of Pediatric Immunology and Pulmonology, Ghent University Hospital, Ghent, Belgium
| | - R Van Coster
- Department of Internal Medicine and Pediatrics, Division of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent, Belgium
| | - B N Lambrecht
- Department of Internal Medicine and Pediatrics, Division of Pulmonology, Ghent University Hospital, Ghent, Belgium.,VIB Center for Inflammation Research, Unit for Immunoregulation and Mucosal Immunology, Ghent, Belgium.,Department of Pulmonary Medicine, ErasmusMC, Rotterdam, The Netherlands
| | - B Menten
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - R Beyaert
- VIB Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - C G Vinuesa
- Department of Immunology and Infectious Disease and Center for Personalised Immunology (NHMRC Centre for Research Excellence), John Curtin School of Medical Research, Australian National University, Canberra, Australia.,Centre for Personalised Immunology (CACPI), Shanghai Renji Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - V Heissmeyer
- Institute for Immunology, Biomedical Center, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany.,Research Unit Molecular Immune Regulation, Helmholtz Zentrum München, Munich, Germany
| | - M Dullaers
- Primary Immune Deficiency Research Lab, Department of Internal Medicine and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Ablynx, a Sanofi Company, Zwijnaarde, Belgium
| | - F Haerynck
- Primary Immune Deficiency Research Lab, Department of Internal Medicine and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium. .,Department of Internal Medicine and Pediatrics, Division of Pediatric Immunology and Pulmonology, Ghent University Hospital, Ghent, Belgium.
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21
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Gilis E, Gaublomme D, Staal J, Venken K, Dhaenens M, Lambrecht S, Coudenys J, Decruy T, Schryvers N, Driege Y, Dumas E, Demeyer A, De Muynck A, van Hengel J, Van Hoorebeke L, Deforce D, Beyaert R, Elewaut D. Deletion of Mucosa-Associated Lymphoid Tissue Lymphoma Translocation Protein 1 in Mouse T Cells Protects Against Development of Autoimmune Arthritis but Leads to Spontaneous Osteoporosis. Arthritis Rheumatol 2019; 71:2005-2015. [PMID: 31259485 DOI: 10.1002/art.41029] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 06/25/2019] [Indexed: 12/26/2022]
Abstract
OBJECTIVE Mucosa-associated lymphoid tissue lymphoma translocation protein 1 (MALT-1) plays a crucial role in innate and adaptive immune signaling by modulating the threshold for activation of immune cells, including Treg cells. Therefore, MALT-1 is regarded to be an interesting therapeutic target in several immune-mediated diseases. The goal of this study was to examine the role of MALT-1 in experimental animal models of rheumatoid arthritis (RA). METHODS MALT-1 activation was assessed by measuring cleavage of the deubiquitinase CYLD in lymphocytes from mice with collagen-induced arthritis (CIA). Furthermore, the impact of MALT-1 deficiency on arthritis was evaluated in Malt1KO mice with CIA or with collagen antibody-induced arthritis (CAIA). T cell-specific MALT-1 deficiency was measured in mice with deletion of T cell-specific MALT-1 (Malt1Tcell KO ), and the time-dependent effects of MALT-1 deficiency were assessed in mice with deletion of tamoxifen-inducible T cell-specific MALT-1 (Malt1iTcell KO ). Bone density was determined in MALT-1-deficient mice using micro-computed tomography and femur-bending tests. Reconstitution of Treg cells was performed using adoptive transfer experiments. RESULTS MALT-1 activation was observed in the lymphocytes of mice with CIA. T cell-specific MALT-1 deletion in the induction phase of arthritis (incidence of arthritis, 25% in control mice versus 0% in Malt1iTcell KO mice; P < 0.05), but not in the effector phase of arthritis, completely protected mice against the development of CIA. Consistent with this finding, MALT-1 deficiency had no impact on CAIA, an effector phase model of RA. Finally, mice with MALT-1 deficiency showed a spontaneous decrease in bone density (mean ± SEM trabecular thickness, 46.3 ± 0.7 μm in control mice versus 40 ± 1.1 μm in Malt1KO mice; P < 0.001), which was linked to the loss of Treg cells in these mice. CONCLUSION Overall, these data in murine models of RA highlight MALT-1 as a master regulator of T cell activation, which is relevant to the pathogenesis of autoimmune arthritis. Furthermore, these findings show that MALT-1 deficiency can lead to spontaneous osteoporosis, which is associated with impaired Treg cell numbers.
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Affiliation(s)
- Elisabeth Gilis
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Djoere Gaublomme
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Jens Staal
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Koen Venken
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | | | | | - Julie Coudenys
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Tine Decruy
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Nadia Schryvers
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Yasmine Driege
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Emilie Dumas
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Annelies Demeyer
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | | | | | | | | | - Rudi Beyaert
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
| | - Dirk Elewaut
- VIB-UGent Center for Inflammation Research and Ghent University, Ghent, Belgium
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22
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Tavernier SJ, Athanasopoulos V, Verloo P, Behrens G, Staal J, Bogaert DJ, Naesens L, De Bruyne M, Van Gassen S, Parthoens E, Ellyard J, Cappello J, Morris LX, Van Gorp H, Van Isterdael G, Saeys Y, Lamkanfi M, Schelstraete P, Dehoorne J, Bordon V, Van Coster R, Lambrecht BN, Menten B, Beyaert R, Vinuesa CG, Heissmeyer V, Dullaers M, Haerynck F. A human immune dysregulation syndrome characterized by severe hyperinflammation with a homozygous nonsense Roquin-1 mutation. Nat Commun 2019; 10:4779. [PMID: 31636267 PMCID: PMC6803705 DOI: 10.1038/s41467-019-12704-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 09/24/2019] [Indexed: 12/15/2022] Open
Abstract
Hyperinflammatory syndromes are life-threatening disorders caused by overzealous immune cell activation and cytokine release, often resulting from defects in negative feedback mechanisms. In the quintessential hyperinflammatory syndrome familial hemophagocytic lymphohistiocytosis (HLH), inborn errors of cytotoxicity result in effector cell accumulation, immune dysregulation and, if untreated, tissue damage and death. Here, we describe a human case with a homozygous nonsense R688* RC3H1 mutation suffering from hyperinflammation, presenting as relapsing HLH. RC3H1 encodes Roquin-1, a posttranscriptional repressor of immune-regulatory proteins such as ICOS, OX40 and TNF. Comparing the R688* variant with the murine M199R variant reveals a phenotypic resemblance, both in immune cell activation, hypercytokinemia and disease development. Mechanistically, R688* Roquin-1 fails to localize to P-bodies and interact with the CCR4-NOT deadenylation complex, impeding mRNA decay and dysregulating cytokine production. The results from this unique case suggest that impaired Roquin-1 function provokes hyperinflammation by a failure to quench immune activation. Roquin-1 is a posttranscriptional regulator that controls the expression of many immune-related genes such as ICOS and TNFA. Here, the authors report a homozygous R688* loss of function mutation in Roquin-1 in a patient with syndromic uncontrolled hyperinflammation associated with immune cell activation and hypercytokinemia.
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Affiliation(s)
- S J Tavernier
- Primary Immune Deficiency Research Lab, Department of Internal Medicine and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,VIB Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - V Athanasopoulos
- Department of Immunology and Infectious Disease and Center for Personalised Immunology (NHMRC Centre for Research Excellence), John Curtin School of Medical Research, Australian National University, Canberra, Australia.,Centre for Personalised Immunology (CACPI), Shanghai Renji Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - P Verloo
- Department of Internal Medicine and Pediatrics, Division of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent, Belgium
| | - G Behrens
- Institute for Immunology, Biomedical Center, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany.,Research Unit Molecular Immune Regulation, Helmholtz Zentrum München, Munich, Germany
| | - J Staal
- VIB Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - D J Bogaert
- Primary Immune Deficiency Research Lab, Department of Internal Medicine and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Department of Internal Medicine and Pediatrics, Division of Pediatric Immunology and Pulmonology, Ghent University Hospital, Ghent, Belgium
| | - L Naesens
- Primary Immune Deficiency Research Lab, Department of Internal Medicine and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent, Belgium
| | - M De Bruyne
- Primary Immune Deficiency Research Lab, Department of Internal Medicine and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - S Van Gassen
- VIB Center for Inflammation Research, Unit of Data Mining and Modeling for Biomedicine, Ghent, Belgium.,Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Gent, Belgium
| | - E Parthoens
- VIB Bioimaging Core, VIB Center for Inflammation Research, Ghent, Belgium
| | - J Ellyard
- Department of Immunology and Infectious Disease and Center for Personalised Immunology (NHMRC Centre for Research Excellence), John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - J Cappello
- Department of Immunology and Infectious Disease and Center for Personalised Immunology (NHMRC Centre for Research Excellence), John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - L X Morris
- The Australian Phenomics Facility, John Curtin School of Medical Research, Australian National University, Canberra, Australia
| | - H Van Gorp
- Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent, Belgium.,VIB Center for Inflammation Research, Ghent, Belgium
| | - G Van Isterdael
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,VIB Flow Core, VIB Center for Inflammation Research, Ghent, Belgium
| | - Y Saeys
- VIB Center for Inflammation Research, Unit of Data Mining and Modeling for Biomedicine, Ghent, Belgium.,Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Gent, Belgium
| | - M Lamkanfi
- Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent, Belgium.,VIB Center for Inflammation Research, Ghent, Belgium
| | - P Schelstraete
- Department of Internal Medicine and Pediatrics, Division of Pediatric Immunology and Pulmonology, Ghent University Hospital, Ghent, Belgium
| | - J Dehoorne
- Department of Internal Medicine and Pediatrics, Division of Pediatric Rheumatology, Ghent University Hospital, Ghent, Belgium
| | - V Bordon
- Department of Internal Medicine and Pediatrics, Division of Pediatric Immunology and Pulmonology, Ghent University Hospital, Ghent, Belgium
| | - R Van Coster
- Department of Internal Medicine and Pediatrics, Division of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent, Belgium
| | - B N Lambrecht
- Department of Internal Medicine and Pediatrics, Division of Pulmonology, Ghent University Hospital, Ghent, Belgium.,VIB Center for Inflammation Research, Unit for Immunoregulation and Mucosal Immunology, Ghent, Belgium.,Department of Pulmonary Medicine, ErasmusMC, Rotterdam, The Netherlands
| | - B Menten
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - R Beyaert
- VIB Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - C G Vinuesa
- Department of Immunology and Infectious Disease and Center for Personalised Immunology (NHMRC Centre for Research Excellence), John Curtin School of Medical Research, Australian National University, Canberra, Australia.,Centre for Personalised Immunology (CACPI), Shanghai Renji Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - V Heissmeyer
- Institute for Immunology, Biomedical Center, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany.,Research Unit Molecular Immune Regulation, Helmholtz Zentrum München, Munich, Germany
| | - M Dullaers
- Primary Immune Deficiency Research Lab, Department of Internal Medicine and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Ablynx, a Sanofi Company, Zwijnaarde, Belgium
| | - F Haerynck
- Primary Immune Deficiency Research Lab, Department of Internal Medicine and Pediatrics, Centre for Primary Immunodeficiency Ghent, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium. .,Department of Internal Medicine and Pediatrics, Division of Pediatric Immunology and Pulmonology, Ghent University Hospital, Ghent, Belgium.
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23
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Demeyer A, Van Nuffel E, Baudelet G, Driege Y, Kreike M, Muyllaert D, Staal J, Beyaert R. MALT1-Deficient Mice Develop Atopic-Like Dermatitis Upon Aging. Front Immunol 2019; 10:2330. [PMID: 31632405 PMCID: PMC6779721 DOI: 10.3389/fimmu.2019.02330] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 09/16/2019] [Indexed: 12/25/2022] Open
Abstract
MALT1 plays an important role in innate and adaptive immune signaling by acting as a scaffold protein that mediates NF-κB signaling. In addition, MALT1 is a cysteine protease that further fine tunes proinflammatory signaling by cleaving specific substrates. Deregulated MALT1 activity has been associated with immunodeficiency, autoimmunity, and cancer in mice and humans. Genetically engineered mice expressing catalytically inactive MALT1, still exerting its scaffold function, were previously shown to spontaneously develop autoimmunity due to a decrease in Tregs associated with increased effector T cell activation. In contrast, complete absence of MALT1 does not lead to autoimmunity, which has been explained by the impaired effector T cell activation due to the absence of MALT1-mediated signaling. However, here we report that MALT1-deficient mice develop atopic-like dermatitis upon aging, which is preceded by Th2 skewing, an increase in serum IgE, and a decrease in Treg frequency and surface expression of the Treg functionality marker CTLA-4.
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Affiliation(s)
- Annelies Demeyer
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Elien Van Nuffel
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Griet Baudelet
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Yasmine Driege
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Marja Kreike
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - David Muyllaert
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jens Staal
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Rudi Beyaert
- VIB Center for Inflammation Research, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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24
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Demeyer A, Skordos I, Driege Y, Kreike M, Hochepied T, Baens M, Staal J, Beyaert R. MALT1 Proteolytic Activity Suppresses Autoimmunity in a T Cell Intrinsic Manner. Front Immunol 2019; 10:1898. [PMID: 31474984 PMCID: PMC6702287 DOI: 10.3389/fimmu.2019.01898] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 07/26/2019] [Indexed: 01/31/2023] Open
Abstract
MALT1 is a central signaling component in innate and adaptive immunity by regulating NF-κB and other key signaling pathways in different cell types. Activities of MALT1 are mediated by its scaffold and protease functions. Because of its role in lymphocyte activation and proliferation, inhibition of MALT1 proteolytic activity is of high interest for therapeutic targeting in autoimmunity and certain lymphomas. However, recent studies showing that Malt1 protease-dead knock-in (Malt1-PD) mice suffer from autoimmune disease have somewhat tempered the initial enthusiasm. Although it has been proposed that an imbalance between immune suppressive regulatory T cells (Tregs) and activated effector CD4+ T cells plays a key role in the autoimmune phenotype of Malt1-PD mice, the specific contribution of MALT1 proteolytic activity in T cells remains unclear. Using T cell-conditional Malt1 protease-dead knock-in (Malt1-PDT) mice, we here demonstrate that MALT1 has a T cell-intrinsic role in regulating the homeostasis and function of thymic and peripheral T cells. T cell-specific ablation of MALT1 proteolytic activity phenocopies mice in which MALT1 proteolytic activity has been genetically inactivated in all cell types. The Malt1-PDT mice have a reduced number of Tregs in the thymus and periphery, although the effect in the periphery is less pronounced compared to full-body Malt1-PD mice, indicating that also other cell types may promote Treg induction in a MALT1 protease-dependent manner. Despite the difference in peripheral Treg number, both T cell-specific and full-body Malt1-PD mice develop ataxia and multi-organ inflammation to a similar extent. Furthermore, reconstitution of the full-body Malt1-PD mice with T cell-specific expression of wild-type human MALT1 eliminated all signs of autoimmunity. Together, these findings establish an important T cell-intrinsic role of MALT1 proteolytic activity in the suppression of autoimmune responses.
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Affiliation(s)
- Annelies Demeyer
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Ioannis Skordos
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Yasmine Driege
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Marja Kreike
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Tino Hochepied
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Mathijs Baens
- Center for Innovation and Stimulation of Drug Discovery (CISTIM), Leuven, Belgium
| | - Jens Staal
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Rudi Beyaert
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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25
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Lork M, Staal J, Beyaert R. Ubiquitination and phosphorylation of the CARD11-BCL10-MALT1 signalosome in T cells. Cell Immunol 2018; 340:103877. [PMID: 30514565 DOI: 10.1016/j.cellimm.2018.11.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 11/02/2018] [Indexed: 12/16/2022]
Abstract
Antigen receptor-induced signaling plays an important role in inflammation and immunity. Formation of a CARD11-BCL10-MALT1 (CBM) signaling complex is a key event in T- and B cell receptor-induced gene expression by regulating NF-κB activation and mRNA stability. Deregulated CARD11, BCL10 or MALT1 expression or CBM signaling have been associated with immunodeficiency, autoimmunity and cancer, indicating that CBM formation and function have to be tightly regulated. Over the past years great progress has been made in deciphering the molecular mechanisms of assembly and disassembly of the CBM complex. In this context, several posttranslational modifications play an indispensable role in regulating CBM function and downstream signal transduction. In this review we summarize how the different CBM components as well as their interplay are regulated by protein ubiquitination and phosphorylation in the context of T cell receptor signaling.
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Affiliation(s)
- Marie Lork
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; Unit of Molecular Signal Transduction in Inflammation, Center for Inflammation Research, VIB, Ghent, Belgium
| | - Jens Staal
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; Unit of Molecular Signal Transduction in Inflammation, Center for Inflammation Research, VIB, Ghent, Belgium
| | - Rudi Beyaert
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; Unit of Molecular Signal Transduction in Inflammation, Center for Inflammation Research, VIB, Ghent, Belgium.
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26
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Meloni L, Verstrepen L, Kreike M, Staal J, Driege Y, Afonina IS, Beyaert R. Mepazine Inhibits RANK-Induced Osteoclastogenesis Independent of Its MALT1 Inhibitory Function. Molecules 2018; 23:molecules23123144. [PMID: 30513612 PMCID: PMC6320945 DOI: 10.3390/molecules23123144] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 11/23/2018] [Accepted: 11/27/2018] [Indexed: 12/26/2022] Open
Abstract
Mucosa-associated lymphoid tissue lymphoma translocation protein 1 (MALT1) is an intracellular cysteine protease (paracaspase) that plays an integral role in innate and adaptive immunity. The phenothiazine mepazine has been shown to inhibit the proteolytic activity of MALT1 and is frequently used to study its biological role. MALT1 has recently been suggested as a therapeutic target in rheumatoid arthritis. Here, we analyzed the effect of mepazine on the receptor activator of nuclear factor κ-B (RANK)-induced osteoclastogenesis. The treatment of mouse bone marrow precursor cells with mepazine strongly inhibited the RANK ligand (RANKL)-induced formation of osteoclasts, as well as the expression of several osteoclast markers, such as TRAP, cathepsin K, and calcitonin. However, RANKL induced osteoclastogenesis equally well in bone marrow cells derived from wild-type and Malt1 knock-out mice. Furthermore, the protective effect of mepazine was not affected by MALT1 deficiency. Additionally, the absence of MALT1 did not affect RANK-induced nuclear factor κB (NF-κB) and activator protein 1 (AP-1) activation. Overall, these studies demonstrate that MALT1 is not essential for RANK-induced osteoclastogenesis, and implicate a MALT1-independent mechanism of action of mepazine that should be taken into account in future studies using this compound.
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Affiliation(s)
- Laura Meloni
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIB, 9052 Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium.
| | - Lynn Verstrepen
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIB, 9052 Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium.
| | - Marja Kreike
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIB, 9052 Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium.
| | - Jens Staal
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIB, 9052 Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium.
| | - Yasmine Driege
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIB, 9052 Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium.
| | - Inna S Afonina
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIB, 9052 Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium.
| | - Rudi Beyaert
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIB, 9052 Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium.
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27
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De Bruyne M, Hoste L, Bogaert DJ, Van den Bossche L, Tavernier SJ, Parthoens E, Migaud M, Konopnicki D, Yombi JC, Lambrecht BN, van Daele S, Alves de Medeiros AK, Brochez L, Beyaert R, De Baere E, Puel A, Casanova JL, Goffard JC, Savvides SN, Haerynck F, Staal J, Dullaers M. A CARD9 Founder Mutation Disrupts NF-κB Signaling by Inhibiting BCL10 and MALT1 Recruitment and Signalosome Formation. Front Immunol 2018; 9:2366. [PMID: 30429846 PMCID: PMC6220056 DOI: 10.3389/fimmu.2018.02366] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 09/24/2018] [Indexed: 12/12/2022] Open
Abstract
Background: Inherited CARD9 deficiency constitutes a primary immunodeficiency predisposing uniquely to chronic and invasive fungal infections. Certain mutations are shown to negatively impact CARD9 protein expression and/or NF-κB activation, but the underlying biochemical mechanism remains to be fully understood. Objectives: To investigate a possible founder origin of a known CARD9 R70W mutation in five families of Turkish origin. To explore the biochemical mechanism of immunodeficiency by R70W CARD9. Methods: We performed haplotype analysis using microsatellite markers and SNPs. We designed a model system exploiting a gain-of-function (GOF) CARD9 L213LI mutant that triggers constitutive NF-κB activation, analogous to an oncogenic CARD11 mutant, to study NF-κB signaling and signalosome formation. We performed reporter assays, immunoprecipitation and confocal imaging on HEK cells overexpressing different CARD9 variants. Results: We identified a common haplotype, thus providing evidence for a common Turkish founder. CARD9 R70W failed to activate NF-κB and abrogated NF-κB activation by WT CARD9 and by GOF CARD9. Notably, R70W CARD9 also exerted negative effects on NF-κB activation by CARD10, CARD11, and CARD14. Consistent with the NF-κB results, the R70W mutation prevented GOF CARD9 to pull down the signalosome partner proteins BCL10 and MALT1. This reflected into drastic reduction of BCL10 filamentous assemblies in a cellular context. Indeed, structural analysis revealed that position R70 in CARD9 maps at the putative interface between successive CARD domains in CARD9 filaments. Conclusions: The R70W mutation in CARD9 prevents NF-κB activation by inhibiting productive interactions with downstream BCL10 and MALT1, necessary for assembly of the filamentous CARD9-BCL10-MALT1 signalosome.
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Affiliation(s)
- Marieke De Bruyne
- Primary Immunodeficiency Research Lab, Department of Pulmonary Medicine, Centre for Primary Immunodeficiencies, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Center for Medical Genetics, Ghent University and Ghent University Hospital, Ghent, Belgium.,Department of Pediatric Immunology and Pulmonology, Centre for Primary Immunodeficiencies, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium
| | - Levi Hoste
- Primary Immunodeficiency Research Lab, Department of Pulmonary Medicine, Centre for Primary Immunodeficiencies, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Department of Pediatric Immunology and Pulmonology, Centre for Primary Immunodeficiencies, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium
| | - Delfien J Bogaert
- Primary Immunodeficiency Research Lab, Department of Pulmonary Medicine, Centre for Primary Immunodeficiencies, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Center for Medical Genetics, Ghent University and Ghent University Hospital, Ghent, Belgium.,Department of Pediatric Immunology and Pulmonology, Centre for Primary Immunodeficiencies, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Laboratory of Immunoregulation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Lien Van den Bossche
- Laboratory for Protein Biochemistry and Biomolecular Engineering, Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium.,VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Simon J Tavernier
- Primary Immunodeficiency Research Lab, Department of Pulmonary Medicine, Centre for Primary Immunodeficiencies, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Laboratory of Immunoregulation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Eef Parthoens
- VIB-UGent Center for Inflammation Research, Ghent, Belgium.,VIB Bioimaging Core, VIB, Ghent, Belgium
| | - Mélanie Migaud
- Laboratory of Human Genetics of Infectious Diseases, INSERM UMR1163, Necker Medical School, Imagine Institute, Paris Descartes University, Paris, France
| | - Deborah Konopnicki
- Infectious Diseases Department, Saint-Pierre University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Jean Cyr Yombi
- Department of Internal Medicine and Infectious Diseases, Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Brussels, Belgium
| | - Bart N Lambrecht
- Laboratory of Immunoregulation, VIB-UGent Center for Inflammation Research, Ghent, Belgium.,Department of Internal Medicine, Ghent University, Ghent, Belgium
| | - Sabine van Daele
- Department of Pediatric Immunology and Pulmonology, Centre for Primary Immunodeficiencies, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium
| | | | - Lieve Brochez
- Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - Rudi Beyaert
- Unit of Molecular Signal Transduction in Inflammation, Department of Biomedical Molecular Biology, VIB-UGent Center for Inflammation Research, Ghent University, Ghent, Belgium
| | - Elfride De Baere
- Center for Medical Genetics, Ghent University and Ghent University Hospital, Ghent, Belgium
| | - Anne Puel
- Laboratory of Human Genetics of Infectious Diseases, INSERM UMR1163, Necker Medical School, Imagine Institute, Paris Descartes University, Paris, France
| | - Jean-Laurent Casanova
- Laboratory of Human Genetics of Infectious Diseases, INSERM UMR1163, Necker Medical School, Imagine Institute, Paris Descartes University, Paris, France.,St Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller University, New York, NY, United States; Pediatric Hematology-Immunology Unit, Necker Hospital, New York, NY, United States
| | | | - Savvas N Savvides
- Laboratory for Protein Biochemistry and Biomolecular Engineering, Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium.,VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Filomeen Haerynck
- Primary Immunodeficiency Research Lab, Department of Pulmonary Medicine, Centre for Primary Immunodeficiencies, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Department of Pediatric Immunology and Pulmonology, Centre for Primary Immunodeficiencies, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium
| | - Jens Staal
- Unit of Molecular Signal Transduction in Inflammation, Department of Biomedical Molecular Biology, VIB-UGent Center for Inflammation Research, Ghent University, Ghent, Belgium
| | - Melissa Dullaers
- Primary Immunodeficiency Research Lab, Department of Pulmonary Medicine, Centre for Primary Immunodeficiencies, Jeffrey Modell Diagnosis and Research Centre, Ghent University Hospital, Ghent, Belgium.,Laboratory of Immunoregulation, VIB-UGent Center for Inflammation Research, Ghent, Belgium
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28
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Gul IS, Staal J, Hulpiau P, De Keuckelaere E, Kamm K, Deroo T, Sanders E, Staes K, Driege Y, Saeys Y, Beyaert R, Technau U, Schierwater B, van Roy F. GC Content of Early Metazoan Genes and Its Impact on Gene Expression Levels in Mammalian Cell Lines. Genome Biol Evol 2018; 10:909-917. [PMID: 29608715 PMCID: PMC5952964 DOI: 10.1093/gbe/evy040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/20/2018] [Indexed: 01/20/2023] Open
Abstract
With the genomes available for many animal clades, including the early-branching metazoans, one can readily study the functional conservation of genes across a diversity of animal lineages. Ectopic expression of an animal protein in, for instance, a mammalian cell line is a generally used strategy in structure–function analysis. However, this might turn out to be problematic in case of distantly related species. Here we analyzed the GC content of the coding sequences of basal animals and show its impact on gene expression levels in human cell lines, and, importantly, how this expression efficiency can be improved. Optimization of the GC3 content in the coding sequences of cadherin, alpha-catenin, and paracaspase of Trichoplax adhaerens dramatically increased the expression of these basal animal genes in human cell lines.
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Affiliation(s)
- Ismail Sahin Gul
- Center for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Jens Staal
- Center for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Paco Hulpiau
- Center for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Evi De Keuckelaere
- Center for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Kai Kamm
- Institut für Tierökologie und Zellbiologie (ITZ), Division of Ecology and Evolution, Stiftung Tieraerztliche Hochschule Hannover, Hannover, Germany
| | - Tom Deroo
- Center for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Ellen Sanders
- Center for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Katrien Staes
- Center for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Yasmine Driege
- Center for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Yvan Saeys
- Center for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium.,Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Belgium
| | - Rudi Beyaert
- Center for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Ulrich Technau
- Department of Molecular Evolution and Development, Faculty of Life Sciences, University of Vienna, Austria
| | - Bernd Schierwater
- Institut für Tierökologie und Zellbiologie (ITZ), Division of Ecology and Evolution, Stiftung Tieraerztliche Hochschule Hannover, Hannover, Germany
| | - Frans van Roy
- Center for Inflammation Research, Flanders Institute for Biotechnology (VIB), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Belgium
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29
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Staal J, Beyaert R. Inflammation and NF-κB Signaling in Prostate Cancer: Mechanisms and Clinical Implications. Cells 2018; 7:E122. [PMID: 30158439 PMCID: PMC6162478 DOI: 10.3390/cells7090122] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 08/24/2018] [Accepted: 08/27/2018] [Indexed: 12/26/2022] Open
Abstract
Prostate cancer is a highly prevalent form of cancer that is usually slow-developing and benign. Due to its high prevalence, it is, however, still the second most common cause of death by cancer in men in the West. The higher prevalence of prostate cancer in the West might be due to elevated inflammation from metabolic syndrome or associated comorbidities. NF-κB activation and many other signals associated with inflammation are known to contribute to prostate cancer malignancy. Inflammatory signals have also been associated with the development of castration resistance and resistance against other androgen depletion strategies, which is a major therapeutic challenge. Here, we review the role of inflammation and its link with androgen signaling in prostate cancer. We further describe the role of NF-κB in prostate cancer cell survival and proliferation, major NF-κB signaling pathways in prostate cancer, and the crosstalk between NF-κB and androgen receptor signaling. Several NF-κB-induced risk factors in prostate cancer and their potential for therapeutic targeting in the clinic are described. A better understanding of the inflammatory mechanisms that control the development of prostate cancer and resistance to androgen-deprivation therapy will eventually lead to novel treatment options for patients.
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Affiliation(s)
- Jens Staal
- VIB-UGent Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, VIB, 9052 Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Rudi Beyaert
- VIB-UGent Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, VIB, 9052 Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium.
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30
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Staal J, Driege Y, Haegman M, Borghi A, Hulpiau P, Lievens L, Gul IS, Sundararaman S, Gonçalves A, Dhondt I, Pinzón JH, Braeckman BP, Technau U, Saeys Y, van Roy F, Beyaert R. Ancient Origin of the CARD-Coiled Coil/Bcl10/MALT1-Like Paracaspase Signaling Complex Indicates Unknown Critical Functions. Front Immunol 2018; 9:1136. [PMID: 29881386 PMCID: PMC5978004 DOI: 10.3389/fimmu.2018.01136] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 05/07/2018] [Indexed: 12/16/2022] Open
Abstract
The CARD–coiled coil (CC)/Bcl10/MALT1-like paracaspase (CBM) signaling complexes composed of a CARD–CC family member (CARD-9, -10, -11, or -14), Bcl10, and the type 1 paracaspase MALT1 (PCASP1) play a pivotal role in immunity, inflammation, and cancer. Targeting MALT1 proteolytic activity is of potential therapeutic interest. However, little is known about the evolutionary origin and the original functions of the CBM complex. Type 1 paracaspases originated before the last common ancestor of planulozoa (bilaterians and cnidarians). Notably in bilaterians, Ecdysozoa (e.g., nematodes and insects) lacks Bcl10, whereas other lineages have a Bcl10 homolog. A survey of invertebrate CARD–CC homologs revealed such homologs only in species with Bcl10, indicating an ancient common origin of the entire CBM complex. Furthermore, vertebrate-like Syk/Zap70 tyrosine kinase homologs with the ITAM-binding SH2 domain were only found in invertebrate organisms with CARD–CC/Bcl10, indicating that this pathway might be related to the original function of the CBM complex. Moreover, the type 1 paracaspase sequences from invertebrate organisms that have CARD–CC/Bcl10 are more similar to vertebrate paracaspases. Functional analysis of protein–protein interactions, NF-κB signaling, and CYLD cleavage for selected invertebrate type 1 paracaspase and Bcl10 homologs supports this scenario and indicates an ancient origin of the CARD–CC/Bcl10/paracaspase signaling complex. By contrast, many of the known MALT1-associated activities evolved fairly recently, indicating that unknown functions are at the basis of the protein conservation. As a proof-of-concept, we provide initial evidence for a CBM- and NF-κB-independent neuronal function of the Caenorhabditis elegans type 1 paracaspase malt-1. In conclusion, this study shows how evolutionary insights may point at alternative functions of MALT1.
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Affiliation(s)
- Jens Staal
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research (IRC), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Yasmine Driege
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research (IRC), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Mira Haegman
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research (IRC), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Alice Borghi
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research (IRC), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Paco Hulpiau
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,Unit of Data Mining and Modeling for Biomedicine, VIB-UGent Center for Inflammation Research (IRC), Ghent, Belgium
| | - Laurens Lievens
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research (IRC), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Ismail Sahin Gul
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,Unit of Molecular Cell Biology, VIB-UGent Center for Inflammation Research (IRC), Ghent, Belgium
| | - Srividhya Sundararaman
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,Unit of Molecular Cell Biology, VIB-UGent Center for Inflammation Research (IRC), Ghent, Belgium
| | - Amanda Gonçalves
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,VIB Bio Imaging Core Gent, VIB-UGent Center for Inflammation Research (IRC), Ghent, Belgium
| | - Ineke Dhondt
- Laboratory for Aging Physiology and Molecular Evolution, Biology Department, Ghent University, Ghent, Belgium
| | - Jorge H Pinzón
- Department of Biology, University of Texas Arlington, Arlington, TX, United States
| | - Bart P Braeckman
- Laboratory for Aging Physiology and Molecular Evolution, Biology Department, Ghent University, Ghent, Belgium
| | - Ulrich Technau
- Department of Molecular Evolution and Development, Faculty of Life Sciences, University of Vienna, Vienna, Austria
| | - Yvan Saeys
- Unit of Data Mining and Modeling for Biomedicine, VIB-UGent Center for Inflammation Research (IRC), Ghent, Belgium.,Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Ghent, Belgium
| | - Frans van Roy
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,Unit of Molecular Cell Biology, VIB-UGent Center for Inflammation Research (IRC), Ghent, Belgium
| | - Rudi Beyaert
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research (IRC), Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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31
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Lork M, Kreike M, Staal J, Beyaert R. Importance of Validating Antibodies and Small Compound Inhibitors Using Genetic Knockout Studies-T Cell Receptor-Induced CYLD Phosphorylation by IKKε/TBK1 as a Case Study. Front Cell Dev Biol 2018; 6:40. [PMID: 29755980 PMCID: PMC5932415 DOI: 10.3389/fcell.2018.00040] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 03/23/2018] [Indexed: 12/16/2022] Open
Abstract
CYLD is a deubiquitinating enzyme that plays a crucial role in immunity and inflammation as a negative regulator of NF-κB transcription factor and JNK kinase signaling. Defects in either of these pathways contribute to the progression of numerous inflammatory and autoimmune disorders. Therefore, we set out to unravel molecular mechanisms that control CYLD activity in the context of T cell receptor (TCR) signaling. More specifically, we focused on CYLD phosphorylation at Ser418, which can be detected upon immunoblotting of cell extracts with phospho(Ser418)-CYLD specific antibodies. Jurkat T cells stimulated with either anti-CD3/anti-CD28 or PMA/Ionomycin (to mimic TCR signaling) were used as a model system. The role of specific kinases was analyzed using pharmacological as well as genetic approaches. Our initial data indicated that CYLD is directly phosphorylated by the noncanonical IκB kinases (IKKs) IKKε and TANK Binding Kinase 1 (TBK1) at Ser418 upon TCR stimulation. Treatment with MRT67307, a small compound inhibitor for IKKε and TBK1, inhibited TCR-induced CYLD phosphorylation. However, the phospho(Ser418)-CYLD immunoreactive band was still present in CRISPR/Cas9 generated IKKε/TBK1 double knockout cell lines, where it could still be prevented by MRT67307, indicating that the initially observed inhibitory effect of MRT67307 on TCR-induced CYLD phosphorylation is IKKε/TBK1-independent. Most surprisingly, the phospho(Ser418)-CYLD immunoreactive band was still detectable upon immunoblotting of cell extracts obtained from CYLD deficient cells. These data demonstrate the non-specificity of MRT67307 and phospho(Ser418)-CYLD specific antibodies, implying that previously published results based on these tools may also have led to wrong conclusions. We therefore advise to use genetic knockout studies or alternative approaches for a better validation of antibodies and small compound inhibitors. Interestingly, immunoprecipitation with the phospho(Ser418)-CYLD antibody, followed by immunoblotting with anti-CYLD, revealed that CYLD is phosphorylated by IKKε/TBK1 at Ser418 upon T cell stimulation, but that its direct detection with the phospho(Ser418)-CYLD-specific antibody in a western blot is masked by another inducible protein of the same size that is recognized by the same antibody.
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Affiliation(s)
- Marie Lork
- Unit of Molecular Signal Transduction in Inflammation, Department of Biomedical Molecular Biology, VIB-UGent Center for Inflammation Research, Ghent University, Ghent, Belgium
| | - Marja Kreike
- Unit of Molecular Signal Transduction in Inflammation, Department of Biomedical Molecular Biology, VIB-UGent Center for Inflammation Research, Ghent University, Ghent, Belgium
| | - Jens Staal
- Unit of Molecular Signal Transduction in Inflammation, Department of Biomedical Molecular Biology, VIB-UGent Center for Inflammation Research, Ghent University, Ghent, Belgium
| | - Rudi Beyaert
- Unit of Molecular Signal Transduction in Inflammation, Department of Biomedical Molecular Biology, VIB-UGent Center for Inflammation Research, Ghent University, Ghent, Belgium
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32
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Lievens L, Pollier J, Goossens A, Beyaert R, Staal J. Abscisic Acid as Pathogen Effector and Immune Regulator. Front Plant Sci 2017; 8:587. [PMID: 28469630 PMCID: PMC5395610 DOI: 10.3389/fpls.2017.00587] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 03/31/2017] [Indexed: 05/18/2023]
Abstract
Abscisic acid (ABA) is a sesquiterpene signaling molecule produced in all kingdoms of life. To date, the best known functions of ABA are derived from its role as a major phytohormone in plant abiotic stress resistance. Different organisms have developed different biosynthesis and signal transduction pathways related to ABA. Despite this, there are also intriguing common themes where ABA often suppresses host immune responses and is utilized by pathogens as an effector molecule. ABA also seems to play an important role in compatible mutualistic interactions such as mycorrhiza and rhizosphere bacteria with plants, and possibly also the animal gut microbiome. The frequent use of ABA in inter-species communication could be a possible reason for the wide distribution and re-invention of ABA as a signaling molecule in different organisms. In humans and animal models, it has been shown that ABA treatment or nutrient-derived ABA is beneficial in inflammatory diseases like colitis and type 2 diabetes, which confer potential to ABA as an interesting nutraceutical or pharmacognostic drug. The anti-inflammatory activity, cellular metabolic reprogramming, and other beneficial physiological and psychological effects of ABA treatment in humans and animal models has sparked an interest in this molecule and its signaling pathway as a novel pharmacological target. In contrast to plants, however, very little is known about the ABA biosynthesis and signaling in other organisms. Genes, tools and knowledge about ABA from plant sciences and studies of phytopathogenic fungi might benefit biomedical studies on the physiological role of endogenously generated ABA in humans.
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Affiliation(s)
- Laurens Lievens
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIBGhent, Belgium
- Department of Biomedical Molecular Biology, Ghent UniversityGhent, Belgium
| | - Jacob Pollier
- VIB-UGent Center for Plant Systems Biology, VIBGhent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent UniversityGhent, Belgium
| | - Alain Goossens
- VIB-UGent Center for Plant Systems Biology, VIBGhent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent UniversityGhent, Belgium
| | - Rudi Beyaert
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIBGhent, Belgium
- Department of Biomedical Molecular Biology, Ghent UniversityGhent, Belgium
| | - Jens Staal
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIBGhent, Belgium
- Department of Biomedical Molecular Biology, Ghent UniversityGhent, Belgium
- *Correspondence: Jens Staal
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33
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Drennan MB, Govindarajan S, Verheugen E, Coquet JM, Staal J, McGuire C, Taghon T, Leclercq G, Beyaert R, van Loo G, Lambrecht BN, Elewaut D. NKT sublineage specification and survival requires the ubiquitin-modifying enzyme TNFAIP3/A20. J Exp Med 2016; 213:1973-81. [PMID: 27551157 PMCID: PMC5030796 DOI: 10.1084/jem.20151065] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 07/07/2016] [Indexed: 11/04/2022] Open
Abstract
Natural killer T (NKT) cells are innate lymphocytes that differentiate into NKT1, NKT2, and NKT17 sublineages during development. However, the signaling events that control NKT sublineage specification and differentiation remain poorly understood. Here, we demonstrate that the ubiquitin-modifying enzyme TNFAIP3/A20, an upstream regulator of T cell receptor (TCR) signaling in T cells, is an essential cell-intrinsic regulator of NKT differentiation. A20 is differentially expressed during NKT cell development, regulates NKT cell maturation, and specifically controls the differentiation and survival of NKT1 and NKT2, but not NKT17, sublineages. Remaining A20-deficient NKT1 and NKT2 thymocytes are hyperactivated in vivo and secrete elevated levels of Th1 and Th2 cytokines after TCR ligation in vitro. Defective NKT development was restored by compound deficiency of MALT1, a key downstream component of TCR signaling in T cells. These findings therefore show that negative regulation of TCR signaling during NKT development controls the differentiation and survival of NKT1 and NKT2 cells.
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Affiliation(s)
- Michael B Drennan
- Unit for Molecular Immunology and Inflammation, VIB Inflammation Research Center, 9052 Ghent, Belgium Department of Rheumatology, Ghent University, Ghent University Hospital, 9000 Ghent, Belgium
| | - Srinath Govindarajan
- Unit for Molecular Immunology and Inflammation, VIB Inflammation Research Center, 9052 Ghent, Belgium Department of Rheumatology, Ghent University, Ghent University Hospital, 9000 Ghent, Belgium
| | - Eveline Verheugen
- Unit for Molecular Immunology and Inflammation, VIB Inflammation Research Center, 9052 Ghent, Belgium Department of Rheumatology, Ghent University, Ghent University Hospital, 9000 Ghent, Belgium
| | - Jonathan M Coquet
- Unit Immunoregulation and Mucosal Immunology, VIB Inflammation Research Center, 9052 Ghent, Belgium Department of Respiratory Medicine, Ghent University, 9000 Ghent, Belgium
| | - Jens Staal
- Unit of Molecular Signal Transduction in Inflammation, VIB Inflammation Research Center, 9052 Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Conor McGuire
- Unit of Molecular Signal Transduction in Inflammation, VIB Inflammation Research Center, 9052 Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Tom Taghon
- Department of Clinical Chemistry, Microbiology and Immunology, Faculty of Medicine and Health Sciences, Ghent University, Ghent University Hospital, 9000 Ghent, Belgium
| | - Georges Leclercq
- Department of Clinical Chemistry, Microbiology and Immunology, Faculty of Medicine and Health Sciences, Ghent University, Ghent University Hospital, 9000 Ghent, Belgium
| | - Rudi Beyaert
- Unit of Molecular Signal Transduction in Inflammation, VIB Inflammation Research Center, 9052 Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Geert van Loo
- Unit of Molecular Signal Transduction in Inflammation, VIB Inflammation Research Center, 9052 Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
| | - Bart N Lambrecht
- Unit Immunoregulation and Mucosal Immunology, VIB Inflammation Research Center, 9052 Ghent, Belgium Department of Respiratory Medicine, Ghent University, 9000 Ghent, Belgium Department of Pulmonary Medicine, Erasmus MC, 3015 CE Rotterdam, Netherlands
| | - Dirk Elewaut
- Unit for Molecular Immunology and Inflammation, VIB Inflammation Research Center, 9052 Ghent, Belgium Department of Rheumatology, Ghent University, Ghent University Hospital, 9000 Ghent, Belgium
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34
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Elton L, Carpentier I, Verhelst K, Staal J, Beyaert R. The multifaceted role of the E3 ubiquitin ligase HOIL-1: beyond linear ubiquitination. Immunol Rev 2016; 266:208-21. [PMID: 26085217 DOI: 10.1111/imr.12307] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Ubiquitination controls and fine-tunes many signaling processes driving immunity, inflammation, and cancer. The E3 ubiquitin ligase HOIL-1 (heme-oxidized IRP2 ubiquitin ligase-1) is increasingly implicated in different signaling pathways and plays a vital role in immune regulation. HOIL-1 co operates with the E3 ubiquitin ligase HOIP (HOIL-1 interacting protein) to modify specific nuclear factor-κB (NF-κB) signaling proteins with linear M1-linked polyubiquitin chains. In addition, through its ability to also add K48-linked polyubiquitin chains to specific substrates, HOIL-1 has been linked with antiviral signaling, iron and xenobiotic metabolism, cell death, and cancer. HOIL-1 deficiency in humans leads to myopathy, amylopectinosis, auto-inflammation, and immunodeficiency associated with an increased frequency of bacterial infections. HOIL-1-deficient mice exhibit amylopectin-like deposits in the myocardium, pathogen-specific immunodeficiency, but minimal signs of hyper-inflammation. This review summarizes current knowledge on the mechanism of action of HOIL-1 and highlights recent advances regarding its role in health and disease.
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Affiliation(s)
- Lynn Elton
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Isabelle Carpentier
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Kelly Verhelst
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jens Staal
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Rudi Beyaert
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, VIB, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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Afonina IS, Van Nuffel E, Baudelet G, Driege Y, Kreike M, Staal J, Beyaert R. The paracaspase MALT1 mediates CARD14-induced signaling in keratinocytes. EMBO Rep 2016; 17:914-27. [PMID: 27113748 DOI: 10.15252/embr.201642109] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 04/01/2016] [Indexed: 11/09/2022] Open
Abstract
Mutations in CARD14 have recently been linked to psoriasis susceptibility. CARD14 is an epidermal regulator of NF-κB activation. However, the ability of CARD14 to activate other signaling pathways as well as the biochemical mechanisms that mediate and regulate its function remain to be determined. Here, we report that in addition to NF-κB signaling, CARD14 activates p38 and JNK MAP kinase pathways, all of which are dependent on the paracaspase MALT1. Mechanistically, we demonstrate that CARD14 physically interacts with paracaspase MALT1 and activates MALT1 proteolytic activity and inflammatory gene expression, which are enhanced by psoriasis-associated CARD14 mutations. Moreover, we show that MALT1 deficiency or pharmacological inhibition of MALT1 catalytic activity inhibits pathogenic mutant CARD14-induced cytokine and chemokine expression in human primary keratinocytes. Collectively, our findings demonstrate a novel role for MALT1 in CARD14-induced signaling and indicate MALT1 as a valuable therapeutic target in psoriasis.
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Affiliation(s)
- Inna S Afonina
- Unit of Molecular Signal Transduction in Inflammation, Inflammation Research Center VIB, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Elien Van Nuffel
- Unit of Molecular Signal Transduction in Inflammation, Inflammation Research Center VIB, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Griet Baudelet
- Unit of Molecular Signal Transduction in Inflammation, Inflammation Research Center VIB, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Yasmine Driege
- Unit of Molecular Signal Transduction in Inflammation, Inflammation Research Center VIB, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Marja Kreike
- Unit of Molecular Signal Transduction in Inflammation, Inflammation Research Center VIB, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Jens Staal
- Unit of Molecular Signal Transduction in Inflammation, Inflammation Research Center VIB, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Rudi Beyaert
- Unit of Molecular Signal Transduction in Inflammation, Inflammation Research Center VIB, Ghent, Belgium Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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Hulpiau P, Driege Y, Staal J, Beyaert R. MALT1 is not alone after all: identification of novel paracaspases. Cell Mol Life Sci 2016; 73:1103-16. [PMID: 26377317 PMCID: PMC11108557 DOI: 10.1007/s00018-015-2041-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 08/18/2015] [Accepted: 09/07/2015] [Indexed: 01/08/2023]
Abstract
Paracaspases and metacaspases are two families of caspase-like proteins identified in 2000. Up until now paracaspases were considered a single gene family with one known non-metazoan paracaspase in the slime mold Dictyostelium and a single animal paracaspase called MALT1. Human MALT1 is a critical signaling component in many innate and adaptive immunity pathways that drive inflammation, and when it is overly active, it can also cause certain forms of cancer. Here, we report the identification and functional analysis of two new vertebrate paracaspases, PCASP2 and PCASP3. Functional characterization indicates that both scaffold and protease functions are conserved across the three vertebrate paralogs. This redundancy might explain the loss of two of the paralogs in mammals and one in Xenopus. Several of the vertebrate paracaspases currently have incorrect or ambiguous annotations. We propose to annotate them accordingly as PCASP1, PCASP2, and PCASP3 similar to the caspase gene nomenclature. A comprehensive search in other metazoans and in non-metazoan species identified additional new paracaspases. We also discovered the first animal metacaspase in the sponge Amphimedon. Comparative analysis of the active site suggests that paracaspases constitute one of the several subclasses of metacaspases that have evolved several times independently.
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Affiliation(s)
- Paco Hulpiau
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Unit of Molecular Signal Transduction in Inflammation, Ghent University, Technologiepark 927, 9052, Ghent, Belgium
| | - Yasmine Driege
- Inflammation Research Center, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Unit of Molecular Signal Transduction in Inflammation, Ghent University, Technologiepark 927, 9052, Ghent, Belgium
| | - Jens Staal
- Inflammation Research Center, VIB, Ghent, Belgium.
- Department of Biomedical Molecular Biology, Unit of Molecular Signal Transduction in Inflammation, Ghent University, Technologiepark 927, 9052, Ghent, Belgium.
| | - Rudi Beyaert
- Inflammation Research Center, VIB, Ghent, Belgium.
- Department of Biomedical Molecular Biology, Unit of Molecular Signal Transduction in Inflammation, Ghent University, Technologiepark 927, 9052, Ghent, Belgium.
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Demeyer A, Staal J, Beyaert R. Targeting MALT1 Proteolytic Activity in Immunity, Inflammation and Disease: Good or Bad? Trends Mol Med 2016; 22:135-150. [PMID: 26787500 DOI: 10.1016/j.molmed.2015.12.004] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 12/15/2015] [Accepted: 12/16/2015] [Indexed: 01/05/2023]
Abstract
MALT1 is a signaling protein that plays a key role in immunity, inflammation, and lymphoid malignancies. For a long time MALT1 was believed to function as a scaffold protein, providing an assembly platform for other signaling proteins. This view changed dramatically when MALT1 was also found to have proteolytic activity and a capacity to fine-tune immune responses. Preclinical studies have fostered the belief that MALT1 is a promising therapeutic target in autoimmunity and B cell lymphomas. However, recent studies have shown that mice expressing catalytically-inactive MALT1 develop multi-organ inflammation and autoimmunity, and thus have tempered this initial enthusiasm. We discuss recent findings, highlighting the urgent need for a better mechanistic and functional understanding of MALT1 in host defense and disease.
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Affiliation(s)
- Annelies Demeyer
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Jens Staal
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - Rudi Beyaert
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium.
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Elton L, Carpentier I, Staal J, Driege Y, Haegman M, Beyaert R. MALT1 cleaves the E3 ubiquitin ligase HOIL-1 in activated T cells, generating a dominant negative inhibitor of LUBAC-induced NF-κB signaling. FEBS J 2015; 283:403-12. [DOI: 10.1111/febs.13597] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 11/10/2015] [Indexed: 12/13/2022]
Affiliation(s)
- Lynn Elton
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, VIB, Department of Biomedical Molecular Biology; Ghent University; Belgium
| | - Isabelle Carpentier
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, VIB, Department of Biomedical Molecular Biology; Ghent University; Belgium
| | - Jens Staal
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, VIB, Department of Biomedical Molecular Biology; Ghent University; Belgium
| | - Yasmine Driege
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, VIB, Department of Biomedical Molecular Biology; Ghent University; Belgium
| | - Mira Haegman
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, VIB, Department of Biomedical Molecular Biology; Ghent University; Belgium
| | - Rudi Beyaert
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, VIB, Department of Biomedical Molecular Biology; Ghent University; Belgium
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Staal J, Lau LS, Zhang H, Hathout Y, Brown K, Rood B. MB-24 * SILAC BASED QUANTITATIVE PROTEOMICS OF MYC-AMPLIFIED MEDULLOBLASTOMA. Neuro Oncol 2015. [DOI: 10.1093/neuonc/nov061.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Mc Guire C, Elton L, Wieghofer P, Staal J, Voet S, Demeyer A, Nagel D, Krappmann D, Prinz M, Beyaert R, van Loo G. Pharmacological inhibition of MALT1 protease activity protects mice in a mouse model of multiple sclerosis. J Neuroinflammation 2014; 11:124. [PMID: 25043939 PMCID: PMC4112826 DOI: 10.1186/1742-2094-11-124] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 07/08/2014] [Indexed: 11/10/2022] Open
Abstract
Background The paracaspase mucosa-associated lymphoid tissue lymphoma translocation protein 1 (MALT1) is crucial for lymphocyte activation through signaling to the transcription factor NF-κB. Besides functioning as a scaffold signaling protein, MALT1 also acts as a cysteine protease that specifically cleaves a number of substrates and contributes to specific T cell receptor-induced gene expression. Recently, small molecule inhibitors of MALT1 proteolytic activity were identified and shown to have promising anticancer properties in subtypes of B cell lymphoma. However, information on the therapeutic potential of small compound inhibitors that target MALT1 protease activity in autoimmunity is still lacking. Methods The present study aimed to elucidate whether MALT1 protease inhibitors are also useful in the treatment of lymphocyte-mediated autoimmune pathologies such as multiple sclerosis (MS). For this, we studied the therapeutic potential of a recently identified inhibitor of MALT1 protease activity, the phenothiazine derivative mepazine, in the context of experimental autoimmune encephalomyelitis (EAE), the main animal model for MS. Results We demonstrate that administration of mepazine prophylactically or after disease onset, can attenuate EAE. Importantly, while complete absence of MALT1 affects the differentiation of regulatory T (Treg) cells in vivo, the MALT1 protease inhibitor mepazine did not affect Treg development. Conclusions Altogether, these data indicate that small molecule inhibitors of MALT1 not only hold great promise for the treatment of B cell lymphomas but also for autoimmune disorders such as MS.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Rudi Beyaert
- Inflammation Research Center, Unit of Molecular Signal Transduction in Inflammation, VIB, Technologiepark 927, B-9052 Ghent, Belgium.
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Vaidyanathan G, Gururangan S, Bigner D, Zalutsky M, Morfouace M, Shelat A, Megan J, Freeman BB, Robinson S, Throm S, Olson JM, Li XN, Guy KR, Robinson G, Stewart C, Gajjar A, Roussel M, Sirachainan N, Pakakasama S, Anurathapan U, Hansasuta A, Dhanachai M, Khongkhatithum C, Hongeng S, Feroze A, Lee KS, Gholamin S, Wu Z, Lu B, Mitra S, Cheshier S, Northcott P, Lee C, Zichner T, Lichter P, Korbel J, Wechsler-Reya R, Pfister S, Project IPT, Li KKW, Xia T, Ma FMT, Zhang R, Zhou L, Lau KM, Ng HK, Lafay-Cousin L, Chi S, Madden J, Smith A, Wells E, Owens E, Strother D, Foreman N, Packer R, Bouffet E, Wataya T, Peacock J, Taylor MD, Ivanov D, Garnett M, Parker T, Alexander C, Meijer L, Grundy R, Gellert P, Ashford M, Walker D, Brent J, Cader FZ, Ford D, Kay A, Walsh R, Solanki G, Peet A, English M, Shalaby T, Fiaschetti G, Baulande S, Gerber N, Baumgartner M, Grotzer M, Hayase T, Kawahara Y, Yagi M, Minami T, Kanai N, Yamaguchi T, Gomi A, Morimoto A, Hill R, Kuijper S, Lindsey J, Schwalbe E, Barker K, Boult J, Williamson D, Ahmad Z, Hallsworth A, Ryan S, Poon E, Robinson S, Ruddle R, Raynaud F, Howell L, Kwok C, Joshi A, Nicholson SL, Crosier S, Wharton S, Robson K, Michalski A, Hargrave D, Jacques T, Pizer B, Bailey S, Swartling F, Petrie K, Weiss W, Chesler L, Clifford S, Kitanovski L, Prelog T, Kotnik BF, Debeljak M, Fiaschetti G, Shalaby T, Baumgartner M, Grotzer MA, Gevorgian A, Morozova E, Kazantsev I, Iukhta T, Safonova S, Kumirova E, Punanov Y, Afanasyev B, Zheludkova O, Grajkowska W, Pronicki M, Cukrowska B, Dembowska-Baginska B, Lastowska M, Murase A, Nobusawa S, Gemma Y, Yamazaki F, Masuzawa A, Uno T, Osumi T, Shioda Y, Kiyotani C, Mori T, Matsumoto K, Ogiwara H, Morota N, Hirato J, Nakazawa A, Terashima K, Fay-McClymont T, Walsh K, Mabbott D, Smith A, Wells E, Madden J, Chi S, Owens E, Strother D, Packer R, Foreman N, Bouffet E, Lafay-Cousin L, Sturm D, Northcott PA, Jones DTW, Korshunov A, Lichter P, Pfister SM, Kool M, Hooper C, Hawes S, Kees U, Gottardo N, Dallas P, Siegfried A, Bertozzi AI, Sevely A, Loukh N, Munzer C, Miquel C, Bourdeaut F, Pietsch T, Dufour C, Delisle MB, Kawauchi D, Rehg J, Finkelstein D, Zindy F, Phoenix T, Gilbertson R, Pfister S, Roussel M, Trubicka J, Borucka-Mankiewicz M, Ciara E, Chrzanowska K, Perek-Polnik M, Abramczuk-Piekutowska D, Grajkowska W, Jurkiewicz D, Luczak S, Kowalski P, Krajewska-Walasek M, Lastowska M, Sheila C, Lee S, Foster C, Manoranjan B, Pambit M, Berns R, Fotovati A, Venugopal C, O'Halloran K, Narendran A, Hawkins C, Ramaswamy V, Bouffet E, Taylor M, Singhal A, Hukin J, Rassekh R, Yip S, Northcott P, Singh S, Duhman C, Dunn S, Chen T, Rush S, Fuji H, Ishida Y, Onoe T, Kanda T, Kase Y, Yamashita H, Murayama S, Nakasu Y, Kurimoto T, Kondo A, Sakaguchi S, Fujimura J, Saito M, Arakawa T, Arai H, Shimizu T, Lastowska M, Jurkiewicz E, Daszkiewicz P, Drogosiewicz M, Trubicka J, Grajkowska W, Pronicki M, Kool M, Sturm D, Jones DTW, Hovestadt V, Buchhalter I, Jager NN, Stuetz A, Johann P, Schmidt C, Ryzhova M, Landgraf P, Hasselblatt M, Schuller U, Yaspo ML, von Deimling A, Korbel J, Eils R, Lichter P, Korshunov A, Pfister S, Modi A, Patel M, Berk M, Wang LX, Plautz G, Camara-Costa H, Resch A, Lalande C, Kieffer V, Poggi G, Kennedy C, Bull K, Calaminus G, Grill J, Doz F, Rutkowski S, Massimino M, Kortmann RD, Lannering B, Dellatolas G, Chevignard M, Lindsey J, Kawauchi D, Schwalbe E, Solecki D, McKinnon P, Olson J, Hayden J, Grundy R, Ellison D, Williamson D, Bailey S, Roussel M, Clifford S, Buss M, Remke M, Lee J, Caspary T, Taylor M, Castellino R, Lannering B, Sabel M, Gustafsson G, Fleischhack G, Benesch M, Doz F, Kortmann RD, Massimino M, Navajas A, Reddingius R, Rutkowski S, Miquel C, Delisle MB, Dufour C, Lafon D, Sevenet N, Pierron G, Delattre O, Bourdeaut F, Ecker J, Oehme I, Mazitschek R, Korshunov A, Kool M, Lodrini M, Deubzer HE, von Deimling A, Kulozik AE, Pfister SM, Witt O, Milde T, Phoenix T, Patmore D, Boulos N, Wright K, Boop S, Gilbertson R, Janicki T, Burzynski S, Burzynski G, Marszalek A, Triscott J, Green M, Foster C, Fotovati A, Berns R, O'Halloran K, Singhal A, Hukin J, Rassekh SR, Yip S, Toyota B, Dunham C, Dunn SE, Liu KW, Pei Y, Wechsler-Reya R, Genovesi L, Ji P, Davis M, Ng CG, Remke M, Taylor M, Cho YJ, Jenkins N, Copeland N, Wainwright B, Tang Y, Schubert S, Nguyen B, Masoud S, Gholamin S, Lee A, Willardson M, Bandopadhayay P, Bergthold G, Atwood S, Whitson R, Cheshier S, Qi J, Beroukhim R, Tang J, Wechsler-Reya R, Oro A, Link B, Bradner J, Cho YJ, Vallero SG, Bertin D, Basso ME, Milanaccio C, Peretta P, Cama A, Mussano A, Barra S, Morana G, Morra I, Nozza P, Fagioli F, Garre ML, Darabi A, Sanden E, Visse E, Stahl N, Siesjo P, Cho YJ, Vaka D, Schubert S, Vasquez F, Weir B, Cowley G, Keller C, Hahn W, Gibbs IC, Partap S, Yeom K, Martinez M, Vogel H, Donaldson SS, Fisher P, Perreault S, Cho YJ, Guerrini-Rousseau L, Dufour C, Pujet S, Kieffer-Renaux V, Raquin MA, Varlet P, Longaud A, Sainte-Rose C, Valteau-Couanet D, Grill J, Staal J, Lau LS, Zhang H, Ingram WJ, Cho YJ, Hathout Y, Brown K, Rood BR, Sanden E, Visse E, Stahl N, Siesjo P, Darabi A, Handler M, Hankinson T, Madden J, Kleinschmidt-Demasters BK, Foreman N, Hutter S, Northcott PA, Kool M, Pfister S, Kawauchi D, Jones DT, Kagawa N, Hirayama R, Kijima N, Chiba Y, Kinoshita M, Takano K, Eino D, Fukuya S, Yamamoto F, Nakanishi K, Hashimoto N, Hashii Y, Hara J, Taylor MD, Yoshimine T, Wang J, Guo C, Yang Q, Chen Z, Perek-Polnik M, Lastowska M, Drogosiewicz M, Dembowska-Baginska B, Grajkowska W, Filipek I, Swieszkowska E, Tarasinska M, Perek D, Kebudi R, Koc B, Gorgun O, Agaoglu FY, Wolff J, Darendeliler E, Schmidt C, Kerl K, Gronych J, Kawauchi D, Lichter P, Schuller U, Pfister S, Kool M, McGlade J, Endersby R, Hii H, Johns T, Gottardo N, Sastry J, Murphy D, Ronghe M, Cunningham C, Cowie F, Jones R, Sastry J, Calisto A, Sangra M, Mathieson C, Brown J, Phuakpet K, Larouche V, Hawkins C, Bartels U, Bouffet E, Ishida T, Hasegawa D, Miyata K, Ochi S, Saito A, Kozaki A, Yanai T, Kawasaki K, Yamamoto K, Kawamura A, Nagashima T, Akasaka Y, Soejima T, Yoshida M, Kosaka Y, Rutkowski S, von Bueren A, Goschzik T, Kortmann R, von Hoff K, Friedrich C, Muehlen AZ, Gerber N, Warmuth-Metz M, Soerensen N, Deinlein F, Benesch M, Zwiener I, Faldum A, Kuehl J, Pietsch T, KRAMER K, -Taskar NP, Zanzonico P, Humm JL, Wolden SL, Cheung NKV, Venkataraman S, Alimova I, Harris P, Birks D, Balakrishnan I, Griesinger A, Remke M, Taylor MD, Handler M, Foreman NK, Vibhakar R, Margol A, Robison N, Gnanachandran J, Hung L, Kennedy R, Vali M, Dhall G, Finlay J, Erdrich-Epstein A, Krieger M, Drissi R, Fouladi M, Gilles F, Judkins A, Sposto R, Asgharzadeh S, Peyrl A, Chocholous M, Holm S, Grillner P, Blomgren K, Azizi A, Czech T, Gustafsson B, Dieckmann K, Leiss U, Slavc I, Babelyan S, Dolgopolov I, Pimenov R, Mentkevich G, Gorelishev S, Laskov M, Friedrich C, Warmuth-Metz M, von Bueren AO, Nowak J, von Hoff K, Pietsch T, Kortmann RD, Rutkowski S, Mynarek M, von Hoff K, Muller K, Friedrich C, von Bueren AO, Gerber NU, Benesch M, Pietsch T, Warmuth-Metz M, Ottensmeier H, Kwiecien R, Faldum A, Kuehl J, Kortmann RD, Rutkowski S, Mynarek M, von Hoff K, Muller K, Friedrich C, von Bueren AO, Gerber NU, Benesch M, Pietsch T, Warmuth-Metz M, Ottensmeier H, Kwiecien R, Faldum A, Kuehl J, Kortmann RD, Rutkowski S, Yankelevich M, Laskov M, Boyarshinov V, Glekov I, Pimenov R, Ozerov S, Gorelyshev S, Popa A, Dolgopolov I, Subbotina N, Mentkevich G, Martin AM, Nirschl C, Polanczyk M, Bell R, Martinez D, Sullivan LM, Santi M, Burger PC, Taube JM, Drake CG, Pardoll DM, Lim M, Li L, Wang WG, Pu JX, Sun HD, Remke M, Taylor MD, Ruggieri R, Symons MH, Vanan MI, Bandopadhayay P, Bergthold G, Nguyen B, Schubert S, Gholamin S, Tang Y, Bolin S, Schumacher S, Zeid R, Masoud S, Yu F, Vue N, Gibson W, Paolella B, Mitra S, Cheshier S, Qi J, Liu KW, Wechsler-Reya R, Weiss W, Swartling FJ, Kieran MW, Bradner JE, Beroukhim R, Cho YJ, Maher O, Khatua S, Tarek N, Zaky W, Gupta T, Mohanty S, Kannan S, Jalali R, Kapitza E, Denkhaus D, Muhlen AZ, Rutkowski S, Pietsch T, von Hoff K, Pizer B, Dufour C, van Vuurden DG, Garami M, Massimino M, Fangusaro J, Davidson TB, da Costa MJG, Sterba J, Benesch M, Gerber NU, Mynarek M, Kwiecien R, Clifford SC, Kool M, Pietsch T, Finlay JL, Rutkowski S, Pietsch T, Schmidt R, Remke M, Korshunov A, Hovestadt V, Jones DT, Felsberg J, Goschzik T, Kool M, Northcott PA, von Hoff K, von Bueren A, Skladny H, Taylor M, Cremer F, Lichter P, Faldum A, Reifenberger G, Rutkowski S, Pfister S, Kunder R, Jalali R, Sridhar E, Moiyadi AA, Goel A, Goel N, Shirsat N, Othman R, Storer L, Korshunov A, Pfister SM, Kerr I, Coyle B, Law N, Smith ML, Greenberg M, Bouffet E, Taylor MD, Laughlin S, Malkin D, Liu F, Moxon-Emre I, Scantlebury N, Mabbott D, Nasir A, Othman R, Storer L, Onion D, Lourdusamy A, Grabowska A, Coyle B, Cai Y, Othman R, Bradshaw T, Coyle B, de Medeiros RSS, Beaugrand A, Soares S, Epelman S, Jones DTW, Hovestadt V, Wang W, Northcott PA, Kool M, Sultan M, Landgraf P, Reifenberger G, Eils R, Yaspo ML, Wechsler-Reya RJ, Korshunov A, Zapatka M, Radlwimmer B, Pfister SM, Lichter P, Alderete D, Baroni L, Lubinieki F, Auad F, Gonzalez ML, Puya W, Pacheco P, Aurtenetxe O, Gaffar A, Gros L, Cruz O, Calvo C, Navajas A, Shinojima N, Nakamura H, Kuratsu JI, Hanaford A, Eberhart C, Archer T, Tamayo P, Pomeroy S, Raabe E, De Braganca K, Gilheeney S, Khakoo Y, Kramer K, Wolden S, Dunkel I, Lulla RR, Laskowski J, Fangusaro J, Goldman S, Gopalakrishnan V, Ramaswamy V, Remke M, Shih D, Wang X, Northcott P, Faria C, Raybaud C, Tabori U, Hawkins C, Rutka J, Taylor M, Bouffet E, Jacobs S, De Vathaire F, Diallo I, Llanas D, Verez C, Diop F, Kahlouche A, Grill J, Puget S, Valteau-Couanet D, Dufour C, Ramaswamy V, Thompson E, Taylor M, Pomeroy S, Archer T, Northcott P, Tamayo P, Prince E, Amani V, Griesinger A, Foreman N, Vibhakar R, Sin-Chan P, Lu M, Kleinman C, Spence T, Picard D, Ho KC, Chan J, Hawkins C, Majewski J, Jabado N, Dirks P, Huang A, Madden JR, Foreman NK, Donson AM, Mirsky DM, Wang X, Dubuc A, Korshunov A, Ramaswamy V, Remke M, Mack S, Gendoo D, Peacock J, Luu B, Cho YJ, Eberhart C, MacDonald T, Li XN, Van Meter T, Northcott P, Croul S, Bouffet E, Pfister S, Taylor M, Laureano A, Brugmann W, Denman C, Singh H, Huls H, Moyes J, Khatua S, Sandberg D, Silla L, Cooper L, Lee D, Gopalakrishnan V. MEDULLOBLASTOMA. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Oide S, Bejai S, Staal J, Guan N, Kaliff M, Dixelius C. A novel role of PR2 in abscisic acid (ABA) mediated, pathogen-induced callose deposition in Arabidopsis thaliana. New Phytol 2013; 200:1187-99. [PMID: 23952213 DOI: 10.1111/nph.12436] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 07/02/2013] [Indexed: 05/20/2023]
Abstract
Pathogenesis-related protein 2 (PR2) is known to play a major role in plant defense and general stress responses. Resistance against the fungal pathogen Leptosphaeria maculans in Arabidopsis requires abscisic acid (ABA), which promotes the deposition of callose, a β-1,3-glucan polymer. Here, we examined the role of PR2 in callose deposition in relation to ABA treatment and challenge with L. maculans and Pseudomonas syringae. Characterization of PR2-overexpressing plants and the knockout line indicated that PR2 negatively affects callose deposition. Recombinant PR2 purified from Pichia pastoris showed callose-degrading activity, and a considerable reduction in the callose-degrading activity was observed in the leaf extract of the PR2 knockout line compared with the wild-type. ABA pretreatment before challenge with L. maculans concomitantly repressed PR2 and enhanced callose accumulation. Likewise, overexpression of an ABA biosynthesis gene NCED3 resulted in reduced PR2 expression and increased callose deposition. We propose that ABA promotes callose deposition through the transcriptional repression of PR2 in Arabidopsis challenged by L. maculans and P. syringae. Callose by itself is likely to act antagonistically on salicylic acid (SA) defense signaling, suggesting that PR2 may function as a modulator of callose- and SA-dependent defense responses.
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Affiliation(s)
- Shinichi Oide
- Department of Plant Biology and Forest Genetics, Uppsala BioCenter, Swedish University of Agricultural Sciences and Linnean Center for Plant Biology, PO Box 7080, 750 07, Uppsala, Sweden
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Loos M, Staal J, Pattij T, Smit AB, Spijker S. Independent genetic loci for sensorimotor gating and attentional performance in BXD recombinant inbred strains. Genes, Brain and Behavior 2011; 11:147-56. [DOI: 10.1111/j.1601-183x.2011.00754.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Staal J, Dixelius C. RLM3, a potential adaptor between specific TIR-NB-LRR receptors and DZC proteins. Commun Integr Biol 2011; 1:59-61. [PMID: 19513199 DOI: 10.4161/cib.1.1.6394] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2008] [Accepted: 06/05/2008] [Indexed: 11/19/2022] Open
Abstract
In our recent paper, we identified a TIR encoding gene, which is required for resistance against a broad range of necrotrophic fungi. Here we present this finding in a broader perspective and discuss the unique features of this gene which might explain its role as a general regulator of resistance responses against a class of pathogens that have previously not been associated to the classical resistance (R) gene type of defense.
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Affiliation(s)
- Jens Staal
- Department of Molecular Biomedical Research; Unit for Molecular Signal Transduction in Inflammation; VIB; Ghent, Belgium
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Malinverni C, Unterreiner A, Staal J, Demeyer A, Galaup M, Luyten M, Beyaert R, Bornancin F. Cleavage by MALT1 induces cytosolic release of A20. Biochem Biophys Res Commun 2010; 400:543-7. [DOI: 10.1016/j.bbrc.2010.08.091] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Accepted: 08/18/2010] [Indexed: 01/11/2023]
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Persson M, Staal J, Oide S, Dixelius C. Layers of defense responses to Leptosphaeria maculans below the RLM1- and camalexin-dependent resistances. New Phytol 2009; 182:470-482. [PMID: 19220763 DOI: 10.1111/j.1469-8137.2009.02763.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Plants have evolved different defense components to counteract pathogen attacks. The resistance locus resistance to Leptosphaeria maculans 1 (RLM1) is a key factor for Arabidopsis thaliana resistance to L. maculans. The present work aimed to reveal downstream defense responses regulated by RLM1. Quantitative assessment of fungal colonization in the host was carried out using quantitative polymerase chain reaction (qPCR) and GUS expression analyses, to further characterize RLM1 resistance and the role of salicylic acid (SA), jasmonic acid (JA), and ethylene (ET) in disease development. Additional assessments of A. thaliana mutants were performed to expand our understanding of this pathosystem. Resistance responses such as lignification and the formation of vascular plugs were found to occur in an RLM1-dependent manner, in contrast to the RLM1-independent increase in reactive oxygen species at the stomata and hydathodes. Analyses of mutants defective in hormone signaling in the camalexin-free rlm1(Ler)pad3 background revealed a significant influence of JA and ET on symptom development and pathogen colonization. The overall results indicate that the defense responses of primary importance induced by RLM1 are all associated with physical barriers, and that responses of secondary importance involve complex cross-talk among SA, JA and ET. Our observations further suggest that ET positively affects fungal colonization.
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Affiliation(s)
- Mattias Persson
- Department of Plant Biology and Forest Genetics, Swedish University of Agricultural Sciences, PO Box 7080, 750 07 Uppsala, Sweden
| | - Jens Staal
- Department of Molecular Biomedical Research, Unit for Molecular Signal Transduction in Inflammation, VIB, Technologiepark 927, B-9052 Ghent (Zwijnaarde), Belgium
- Department of Molecular Biology, Ghent University, Technologiepark 927, B-9052 Ghent (Zwijnaarde), Belgium
| | - Shinichi Oide
- Department of Plant Biology and Forest Genetics, Swedish University of Agricultural Sciences, PO Box 7080, 750 07 Uppsala, Sweden
| | - Christina Dixelius
- Department of Plant Biology and Forest Genetics, Swedish University of Agricultural Sciences, PO Box 7080, 750 07 Uppsala, Sweden
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Staal J, Kaliff M, Dewaele E, Persson M, Dixelius C. RLM3, a TIR domain encoding gene involved in broad-range immunity of Arabidopsis to necrotrophic fungal pathogens. Plant J 2008; 55:188-200. [PMID: 18397376 DOI: 10.1111/j.1365-313x.2008.03503.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Here, we describe the rapid cloning of a plant gene, Leptosphaeria maculans 3 (RLM3(Col)), which encodes a putative Toll interleukin-1 receptor-nucleotide binding (TIR-NB) class protein, which is involved in defence against the fungal pathogen L. maculans and against three other necrotrophic fungi. We have, through microarray-based case control bulk segregant comparisons of transcriptomes in pools of Col-0 x An-1 progeny, identified the absence of a locus that causes susceptibility in An-1. The significance of this locus on chromosome 4 for L. maculans resistance was supported by PCR-based mapping, and denoted resistance to RLM3(Col). Differential susceptible phenotypes in four independent T-DNA insertion lines support the hypothesis that At4g16990 is required for RLM3(Col) function. The mutants in RLM3(Col) also exhibited an enhanced susceptibility to Botrytis cinerea, Alternaria brassicicola and Alternaria brassicae. Complementations of An-1 and T-DNA mutants using overexpression of a short transcript lacking the NB-ARC domain, or a genomic clone, restored resistance to all necrotrophic fungi. The elevated expression of RLM3(Col) on B. cinerea-susceptible mutants further suggested convergence in signalling and gene regulation between defence against B. cinerea and L. maculans. In the case of L. maculans, RLM3(Col) is required for efficient callose deposition downstream of RLM1(Col).
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Affiliation(s)
- Jens Staal
- Department of Molecular Biomedical Research, Unit for Molecular Signal Transduction in Inflammation, VIB, Ghent University, Technologiepark 927, Ghent (Zwijnaarde) B-9052, Belgium.
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Staal J, Dixelius C. Tracing the ancient origins of plant innate immunity. Trends Plant Sci 2007; 12:334-42. [PMID: 17644465 DOI: 10.1016/j.tplants.2007.06.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2007] [Revised: 05/31/2007] [Accepted: 06/28/2007] [Indexed: 05/16/2023]
Abstract
Resistance to pathogens is one of the most ancient traits; mechanisms for discriminating self from non-self have evolved to accomplish this task. Animal and plant immune systems use a set of similar receptors to recognize pathogens. These receptors are located either at the cell surface or inside the cell. Kinases modulate further signalling and are either associated to the receptors or are part of the receptors themselves. In this review, we compare gene families and the nucleotide binding (NB) and the Toll-interleukin-1 receptor (TIR) domains of various kingdoms that are important for the immune systems. Possibilities to deconstruct and reconstruct evolutionary events contributing to the immune systems are explored together with functional aspects.
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Affiliation(s)
- Jens Staal
- Department of Molecular Biomedical Research, Unit for Molecular Signal Transduction in Inflammation, VIB, Technologiepark 927, B-9052 Ghent (Zwijnaarde), Belgium.
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Kaliff M, Staal J, Myrenås M, Dixelius C. ABA is required for Leptosphaeria maculans resistance via ABI1- and ABI4-dependent signaling. Mol Plant Microbe Interact 2007; 20:335-45. [PMID: 17427804 DOI: 10.1094/mpmi-20-4-0335] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Abscisic acid (ABA) is a defense hormone with influence on callose-dependent and -independent resistance against Leptosphaeria maculans acting in the RLMcol pathway. ABA-deficient and -insensitive mutants in Ler-0 background (abal-3 and abil-1) displayed susceptibility to L. maculans, along with a significantly decreased level of callose depositions, whereas abi2-1 and abi3-1 remained resistant, together with the abi5-1 mutant of Ws-0 background. Suppressor mutants of abil-1 confirmed that the L. maculans-susceptible response was due to the dominant negative nature of the abil-1 mutant. Highly induced camalexin levels made ABA mutants in Col-0 background (aba2-1, aba3-1, and abi4-1) appear resistant, but displayed enhanced susceptibility as double mutants with pad3-1, impaired in camalexin biosynthesis. beta-Aminobutyric acid (BABA) pretreatment of Ler-0 contributed to an elevated level of endogenous ABA after L. maculans inoculation. Comparisons between (RLM1co1)pad3 and rlmlLerpad3 showed that ABA and BABA enhancement of callose deposition requires induction from RLM1col. ABII, but not ABI2, was found to be involved in a feedback mechanism that modulates RLM1co, expression. Genetic analysis showed further that this feedback occurs upstream of ABI4 and that components downstream of ABI4 modulate ABIJ activity. ABA and BABA treatments of the L. maculans-susceptible callose synthase mutant pmr4 showed that ABA also induces a callose-independent resistance. Similar treatments enhanced callose depositions and induced resistance to L. maculans in oilseed rape, and BABA-induced resistance was found to be independent of salicylic acid.
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Affiliation(s)
- Maria Kaliff
- Department of Plant Biology and Forest Genetics, Swedish University of Agricultural Sciences, P.O. Box 7080, 750 07 Uppsala, Sweden.
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Johansson A, Staal J, Dixelius C. Early responses in the Arabidopsis-Verticillium longisporum pathosystem are dependent on NDR1, JA- and ET-associated signals via cytosolic NPR1 and RFO1. Mol Plant Microbe Interact 2006; 19:958-69. [PMID: 16941900 DOI: 10.1094/mpmi-19-0958] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The responses of Arabidopsis accessions and characterized genotypes were used to explore components in the early defense responses to the soilborne fungus Verticillium longisporum. V. longisporum susceptibility was found to be a complex trait, in which different disease phenotypes, such as stunting, altered flowering time, weight loss, and chlorosis were perceived differently across genotypes. A Bay-0 x Shahdara recombinant inbred line population was used to identify two loci on chromosomes 2 and 3 of Bay-0 origin that caused enhanced chlorosis after V. longisporum challenge. Furthermore, the observation that a mutation in RFO1 in Col-0 resulted in susceptibility whereas the natural rfo1 allele in Ty-0 showed a high degree of resistance to the pathogen supports the hypothesis that several resistance quantitative trait loci reside among Arabidopsis accessions. Analysis of mutants impaired in known pathogen response pathways revealed an enhanced susceptibility in ein2-1, ein4-1, ein6-1, esa1-1, and pad1-1, but not in other jasmonic acid (JA)-, ethylene (ET)-, or camalexin-deficient mutants, suggesting that V. longisporum resistance is regulated via a hitherto unknown JA- and ET-associated pathway. Pretreatments with the ET precursor 1-aminocyclo-propane-1-carboxylic acid (ACC) or methyl jasmonate (MeJA) caused enhanced resistance to V. longisporum. Mutants in the salicylic acid (SA) pathway (eds1-1, NahG, npr1-3, pad4-1, and sid2-1) did not show enhanced susceptibility to V. longisporum. In contrast, the more severe npr1-1 allele displayed enhanced V. longisporum susceptibility and decreased responses to ACC or MeJA pretreatments. This shows that cytosolic NPR1, in addition to SA responses, is required for JA- and ET-mediated V. longisporum resistance. Expression of the SA-dependent PR-1 and PR-2 and the ET-dependent PR-4 were increased 7 days postinoculation with V. longisporum. This indicates increased levels of SA and ET in response to V. longisporum inoculation. The R-gene signaling mutant ndr1-1 was found to be susceptible to V. longisporum, which could be complemented by ACC or MeJA pretreatments, in contrast to the rfo1 T-DNA mutant, which remained susceptible, suggesting that RFO1 (Fusarium oxysporum resistance) and NDR1 (nonrace specific disease resistance 1) activate two distinct signaling pathways for V. longisporum resistance.
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Affiliation(s)
- Anna Johansson
- Department of Plant Biology and Forest Genetics, Swedish University of Agricultural Sciences, Box 7080, 750 07 Uppsala, Sweden
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