Abstract
COVID-19 shares the feature of autoantibody production with systemic autoimmune diseases. In order to understand the role of these immune globulins in the pathogenesis of the disease, it is important to explore the autoantibody spectra. Here we show, by a cross-sectional study of 246 individuals, that autoantibodies targeting G protein-coupled receptors (GPCR) and RAS-related molecules associate with the clinical severity of COVID-19. Patients with moderate and severe disease are characterized by higher autoantibody levels than healthy controls and those with mild COVID-19 disease. Among the anti-GPCR autoantibodies, machine learning classification identifies the chemokine receptor CXCR3 and the RAS-related molecule AGTR1 as targets for antibodies with the strongest association to disease severity. Besides antibody levels, autoantibody network signatures are also changing in patients with intermediate or high disease severity. Although our current and previous studies identify anti-GPCR antibodies as natural components of human biology, their production is deregulated in COVID-19 and their level and pattern alterations might predict COVID-19 disease severity.
| Original language | English |
|---|---|
| Article number | 1220 |
| Journal | Nature Communications |
| Volume | 13 |
| Issue number | 1 |
| ISSN | 1751-8628 |
| DOIs | |
| Publication status | Published - 12.2022 |
Funding
We acknowledge the patients for participation in this study. We also thank the São Paulo Research Foundation (FAPESP grants: 2018/18886-9, 2020/01688-0, and 2020/07069-0 to O.C.M.; 2020/09146-1 to P.P.F.; 2020/16246-2 to D.L.M.F.; 2020/07972-1 to G.C.B., 2020/11710-2 to D.R.P.), and the Coordination for the Improvement of Higher Education Personnel (CAPES) Financial Code 001 (grant to ISF) for financial support. We acknowledge the Ontario Research Fund (grant #34876), Natural Sciences Research Council (NSERC #203475), Canada Foundation for Innovation (CFI #29272, #225404, #33536), and IBM. This work was also supported by the Deutsche Forschungsgemeinschaft (DFG) founding the Excellence Cluster Precision Medicine in Inflammation, project TI4 and CD1, by the COVID fund of Schleswig-Holstein as well as by DFG project RI 1056 11-1/2. This work was supported by the Bundesministerium für Bildung und Forschung [01EC1901D (MESINFLAME)]. We thank Prof. Dr. med. Tanja Lange from the Department of Rheumatology and Clinical Immunology at the University of Lübeck, Germany for her advice to measure autoantibodies targeting the angiotensin-(1-7) receptor MAS1. We would like to acknowledge the contributions of Lev Rochel Bikur Cholim of Lakewood (led by Rabbi Yehuda Kasirer and Mrs. Leeba Prager) and their hundreds of volunteers who participated in collecting samples for this research.
Research Areas and Centers
- Academic Focus: Center for Infection and Inflammation Research (ZIEL)
DFG Research Classification Scheme
- 2.22-18 Rheumatology
- 2.21-05 Immunology
Coronavirus related work
- Research on SARS-CoV-2 / COVID-19