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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*

*Corresponding author for this work

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.

Original languageEnglish
Article numbere20220525
JournalJournal of Experimental Medicine
Volume220
Issue number6
ISSN0022-1007
DOIs
Publication statusPublished - 05.06.2023

Funding

This work was supported by the Deutsche For-schungsgemeinschaft (FG 2886 “PANDORA” – B01/B02/A03/ B04 to G. Krönke, F. Nimmerjahn, G. Schett, and M.H. Hoffmann, respectively, and the CRC1181-A03/A01/A02/A07/C03 Z2 to G. Krönke, G. Schett, F. Nimmerjahn, and M.H. Hoffmann), the Emerging Field Initiative of the Friedrich-Alexander University Erlangen-Nürnberg (EFI_Verbund_Med_05_MIRACLE to G. Krönke), the Bundesministerium für Bildung und For-schung (MASCARA to G. Krönke and G. Schett; MelAutim to G. Krönke), and the European Union (Horizon 2020 ERC-2014-StG 640087 – SOS and ERC-2020-CoG 101001866 – INSPIRE to G. Krönke; and ERC-2018-SyG nanoSCOPE and RTCure to G. Schett). This work was supported by grants R01AI165661 from the National Institutes of Health/National Institute of Allergy and Infectious Diseases, H2020-FET-OPEN-2018-2020 (no. 861878) from the European Commission to A. Hidalgo and M.H. Hoffmann, and HR17_00527 from Fundacion La Caixa to A. Hidalgo. The CNIC is supported by the Min-isterio de Ciencia e Innovacion and the Pro-CNIC Foundation and is a Severo Ochoa Center of Excellence (MICINN award CEX2020-001041-S).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Research Areas and Centers

  • Academic Focus: Center for Infection and Inflammation Research (ZIEL)
  • Centers: Center for Research on Inflammation of the Skin (CRIS)

DFG Research Classification Scheme

  • 2.21-05 Immunology

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  • CRC 1526, PANTAU: Pathomechanisms of Antibody-mediated Autoimmunity

    Sadik, C. (Speaker), Zillikens, D. (Speaker), Scheffold, A. (Principal Investigator (PI)), Schmidt, E. (Principal Investigator (PI)), Heine, G. (Principal Investigator (PI)), Manz, R. (Principal Investigator (PI)), Köhl, J. (Principal Investigator (PI)), Ludwig, R. (Principal Investigator (PI)), Peipp, M. (Principal Investigator (PI)), Hammers, M. C. (Principal Investigator (PI)), Verschoor, A. (Principal Investigator (PI)), Karsten, C. (Principal Investigator (PI)), Nimmerjahn, F. (Principal Investigator (PI)), Hutloff, A. (Principal Investigator (PI)), Ibrahim, S. (Principal Investigator (PI)), Wettschureck, N. (Principal Investigator (PI)), Bieber, K. (Principal Investigator (PI)), Schilf, P. (Principal Investigator (PI)), Vaeth, M. (Principal Investigator (PI)), Hirose, M. (Principal Investigator (PI)), Vaeth, M. (Principal Investigator (PI)), Baines, J. F. (Principal Investigator (PI)), Bacher, P. (Principal Investigator (PI)), Hoffmann, M. (Principal Investigator (PI)), Busch, H. S. (Principal Investigator (PI)), Höppner, M. (Principal Investigator (PI)), Becker, M. (Principal Investigator (PI)), Holtsche, M. M. (Principal Investigator (PI)), Fähnrich, A. (Principal Investigator (PI)), Szymczak, S. (Principal Investigator (PI)), Murthy, S. (Principal Investigator (PI)) & Lux, A. (Principal Investigator (PI))

    01.01.22 → …

    Project: DFG Joint ResearchDFG Collaborative Research Centers (CRC)

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