Stunning of neutrophils accounts for the anti-inflammatory effects of clodronate liposomes

Stephan Culemann, Katharina Knab, Maximilien Euler, Anja Wegner, Hilal Garibagaoglu, Jochen Ackermann, Kim Fischer, Deborah Kienhöfer, Georgiana Crainiciuc, Jonas Hahn, Anika Grüneboom, Falk Nimmerjahn, Stefan Uderhardt, Andrés Hidalgo, Georg Schett, Markus H. Hoffmann, Gerhard Krönke*

*Korrespondierende/r Autor/-in für diese Arbeit
2 Zitate (Scopus)

Abstract

Clodronate liposomes (Clo-Lip) have been widely used to deplete mononuclear phagocytes (MoPh) to study the function of these cells in vivo. Here, we revisited the effects of Clo-Lip together with genetic models of MoPh deficiency, revealing that Clo-Lip exert their anti-inflammatory effects independent of MoPh. Notably, not only MoPh but also polymorphonuclear neutrophils (PMN) ingested Clo-Lip in vivo, which resulted in their functional arrest. Adoptive transfer of PMN, but not of MoPh, reversed the anti-inflammatory effects of Clo-Lip treatment, indicating that stunning of PMN rather than depletion of MoPh accounts for the anti-inflammatory effects of Clo-Lip in vivo. Our data highlight the need for a critical revision of the current literature on the role of MoPh in inflammation.

OriginalspracheEnglisch
Aufsatznummere20220525
ZeitschriftJournal of Experimental Medicine
Jahrgang220
Ausgabenummer6
ISSN0022-1007
DOIs
PublikationsstatusVeröffentlicht - 05.06.2023

Strategische Forschungsbereiche und Zentren

  • Forschungsschwerpunkt: Infektion und Entzündung - Zentrum für Infektions- und Entzündungsforschung Lübeck (ZIEL)
  • Zentren: Center for Research on Inflammation of the Skin (CRIS)

DFG-Fachsystematik

  • 204-05 Immunologie

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