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.

Details

Title
A human immune dysregulation syndrome characterized by severe hyperinflammation with a homozygous nonsense Roquin-1 mutation
Author
Tavernier, S J 1 ; Athanasopoulos, V 2 ; Verloo, P 3 ; Behrens, G 4 ; Staal, J 5   VIAFID ORCID Logo  ; Bogaert, D J 6 ; Naesens, L 7 ; De Bruyne, M 8   VIAFID ORCID Logo  ; S Van Gassen 9 ; Parthoens, E 10 ; Ellyard, J 11 ; Cappello, J 11 ; Morris, L X 12 ; H Van Gorp 13 ; G Van Isterdael 14   VIAFID ORCID Logo  ; Saeys, Y 9 ; Lamkanfi, M 13 ; Schelstraete, P 15 ; Dehoorne, J 16 ; Bordon, V 15 ; R Van Coster 3 ; Lambrecht, B N 17 ; Menten, B 18 ; Beyaert, R 5   VIAFID ORCID Logo  ; Vinuesa, C G 2 ; Heissmeyer, V 4 ; Dullaers, M 19   VIAFID ORCID Logo  ; Haerynck, F 6 

 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 
 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 
 Department of Internal Medicine and Pediatrics, Division of Pediatric Neurology and Metabolism, Ghent University Hospital, Ghent, Belgium 
 Institute for Immunology, Biomedical Center, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany; Research Unit Molecular Immune Regulation, Helmholtz Zentrum München, Munich, Germany 
 VIB Center for Inflammation Research, Unit of Molecular Signal Transduction in Inflammation, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium 
 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 
 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 
 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 
 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 
10  VIB Bioimaging Core, VIB Center for Inflammation Research, Ghent, Belgium 
11  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 
12  The Australian Phenomics Facility, John Curtin School of Medical Research, Australian National University, Canberra, Australia 
13  Department of Internal Medicine and Pediatrics, Ghent University Hospital, Ghent, Belgium; VIB Center for Inflammation Research, Ghent, Belgium 
14  Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium; VIB Flow Core, VIB Center for Inflammation Research, Ghent, Belgium 
15  Department of Internal Medicine and Pediatrics, Division of Pediatric Immunology and Pulmonology, Ghent University Hospital, Ghent, Belgium 
16  Department of Internal Medicine and Pediatrics, Division of Pediatric Rheumatology, Ghent University Hospital, Ghent, Belgium 
17  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 
18  Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium 
19  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 
Pages
1-16
Publication year
2019
Publication date
Oct 2019
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2307385947
Copyright
© 2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.