SARS-CoV-2 drives JAK1/2-dependent local complement hyperactivation
| Autor: | Richard Gregory, Luopin Wang, Nazish Malik, Nathalie Niyonzima, Charles J. Zhang, Jason R. Spence, Sonja Ghidelli-Disse, Matthew R. Olson, Marcus Bantscheff, Stefania Pittaluga, Tristan Frum, Majid Kazemian, Konstantinos D. Alysandratos, Jonathan Z. Sexton, Daniel Chauss, Darrell N. Kotton, Michail S. Lionakis, Carmen Mirabelli, Erin E. West, Didier Portilla, Bingyu Yan, Eva-Maria Nichols, Christiane E. Wobus, Tilo Freiwald, Shahram Kordasti, Martin Kolev, Behdad Afzali, Jack A. Bibby, Arian Laurence, Claudia Kemper |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
Myeloid Immunology General Medicine Biology Complement factor B Virus C3-convertase Complement system 03 medical and health sciences 030104 developmental biology 0302 clinical medicine medicine.anatomical_structure Interferon Cell culture 030220 oncology & carcinogenesis Cancer research medicine Receptor medicine.drug |
| Zdroj: | Science Immunology. 6 |
| ISSN: | 2470-9468 |
| Popis: | Patients with coronavirus disease 2019 (COVID-19) present a wide range of acute clinical manifestations affecting the lungs, liver, kidneys and gut. Angiotensin converting enzyme (ACE) 2, the best-characterized entry receptor for the disease-causing virus SARS-CoV-2, is highly expressed in the aforementioned tissues. However, the pathways that underlie the disease are still poorly understood. Here, we unexpectedly found that the complement system was one of the intracellular pathways most highly induced by SARS-CoV-2 infection in lung epithelial cells. Infection of respiratory epithelial cells with SARS-CoV-2 generated activated complement component C3a and could be blocked by a cell-permeable inhibitor of complement factor B (CFBi), indicating the presence of an inducible cell-intrinsic C3 convertase in respiratory epithelial cells. Within cells of the bronchoalveolar lavage of patients, distinct signatures of complement activation in myeloid, lymphoid and epithelial cells tracked with disease severity. Genes induced by SARS-CoV-2 and the drugs that could normalize these genes both implicated the interferon-JAK1/2-STAT1 signaling system and NF-κB as the main drivers of their expression. Ruxolitinib, a JAK1/2 inhibitor, normalized interferon signature genes and all complement gene transcripts induced by SARS-CoV-2 in lung epithelial cell lines, but did not affect NF-κB-regulated genes. Ruxolitinib, alone or in combination with the antiviral remdesivir, inhibited C3a protein produced by infected cells. Together, we postulate that combination therapy with JAK inhibitors and drugs that normalize NF-κB-signaling could potentially have clinical application for severe COVID-19. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|