Severe COVID-19 Is Marked by a Dysregulated Myeloid Cell Compartment

Jonas Schulte-Schrepping, Nico Reusch, Daniela Paclik, Kevin Baßler, Stephan Schlickeiser, Bowen Zhang, Benjamin Krämer, Tobias Krammer, Sophia Brumhard, Lorenzo Bonaguro, Elena De Domenico, Daniel Wendisch, Martin Grasshoff, Theodore S. Kapellos, Michael Beckstette, Tal Pecht, Adem Saglam, Oliver Dietrich, Henrik E. Mei, Axel R. SchulzClaudia Conrad, Désirée Kunkel, Ehsan Vafadarnejad, Cheng Jian Xu, Arik Horne, Miriam Herbert, Anna Drews, Charlotte Thibeault, Moritz Pfeiffer, Stefan Hippenstiel, Andreas Hocke, Holger Müller-Redetzky, Katrin Moira Heim, Felix Machleidt, Alexander Uhrig, Laure Bosquillon de Jarcy, Linda Jürgens, Miriam Stegemann, Christoph R. Glösenkamp, Hans Dieter Volk, Christine Goffinet, Markus Landthaler, Emanuel Wyler, Philipp Georg, Maria Schneider, Chantip Dang-Heine, Nick Neuwinger, Kai Kappert, Rudolf Tauber, Victor Corman

Research output: Contribution to journalArticlepeer-review

1081 Citations (Scopus)

Abstract

Coronavirus disease 2019 (COVID-19) is a mild to moderate respiratory tract infection, however, a subset of patients progress to severe disease and respiratory failure. The mechanism of protective immunity in mild forms and the pathogenesis of severe COVID-19 associated with increased neutrophil counts and dysregulated immune responses remain unclear. In a dual-center, two-cohort study, we combined single-cell RNA-sequencing and single-cell proteomics of whole-blood and peripheral-blood mononuclear cells to determine changes in immune cell composition and activation in mild versus severe COVID-19 (242 samples from 109 individuals) over time. HLA-DRhiCD11chi inflammatory monocytes with an interferon-stimulated gene signature were elevated in mild COVID-19. Severe COVID-19 was marked by occurrence of neutrophil precursors, as evidence of emergency myelopoiesis, dysfunctional mature neutrophils, and HLA-DRlo monocytes. Our study provides detailed insights into the systemic immune response to SARS-CoV-2 infection and reveals profound alterations in the myeloid cell compartment associated with severe COVID-19. Analysis of patients with mild and severe COVID-19 reveals the presence of dysfunctional neutrophils in the latter that is linked to emergency myelopoiesis.
Original languageEnglish
Pages (from-to)1419-1440.e23
JournalCell
Volume182
Issue number6
DOIs
Publication statusPublished - 17 Sept 2020
Externally publishedYes

Keywords

  • COVID-19
  • dysfunctional neutrophils
  • emergency myelopoiesis
  • immune profiling
  • mass cytometry
  • monocytes
  • neutrophils
  • SARS-CoV-2
  • scRNA-seq

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