HIF2α is a direct regulator of neutrophil motility

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Sundary Sormendi - , Institute for Clinical Chemistry and Laboratory Medicine (Author)
  • Mathieu Deygas - , Université PSL (Author)
  • Anupam Sinha - , Institute of Clinical Chemistry and Laboratory Medicine (Author)
  • Mathilde Bernard - , Université PSL (Author)
  • Anja Krüger - , Institute for Clinical Chemistry and Laboratory Medicine (Author)
  • Ioannis Kourtzelis - , Institute for Clinical Chemistry and Laboratory Medicine (Author)
  • Gregoire Le Lay - , Université PSL (Author)
  • Pablo J. Sáez - , Université PSL (Author)
  • Michael Gerlach - , Core Facility Cellular Imaging (Author)
  • Kristin Franke - , Institute for Clinical Chemistry and Laboratory Medicine (Author)
  • Ana Meneses - , Institute for Clinical Chemistry and Laboratory Medicine (Author)
  • Martin Kräter - , TUD Dresden University of Technology (Author)
  • Alessandra Palladini - , German Center for Diabetes Research (DZD), Paul Langerhans Institute Dresden (PLID) of the Helmholtz Center Munich (Author)
  • Jochen Guck - , Chair of Cellular Machines (Author)
  • Ünal Coskun - , Institute of Clinical Chemistry and Laboratory Medicine, German Center for Diabetes Research (DZD), Paul Langerhans Institute Dresden (PLID) of the Helmholtz Center Munich (Author)
  • Triantafyllos Chavakis - , Institute of Clinical Chemistry and Laboratory Medicine (Author)
  • Pablo Vargas - , Université PSL (Author)
  • Ben Wielockx - , Institute of Clinical Chemistry and Laboratory Medicine (Author)

Abstract

Orchestrated recruitment of neutrophils to inflamed tissue is essential during the initiation of inflammation. Inflamed areas are usually hypoxic, and adaptation to reduced oxygen pressure is typically mediated by hypoxia pathway proteins. However, it remains unclear how these factors influence the migration of neutrophils to and at the site of inflammation during their transmigration through the blood-endothelial cell barrier, as well as their motility in the interstitial space. Here, we reveal that activation of hypoxia-inducible factor 2 (HIF2α) as a result of a deficiency in HIF prolyl hydroxylase domain protein 2 (PHD2) boosts neutrophil migration specifically through highly confined microenvironments. In vivo, the increased migratory capacity of PHD2-deficient neutrophils resulted in massive tissue accumulation in models of acute local inflammation. Using systematic RNA sequencing analyses and mechanistic approaches, we identified RhoA, a cytoskeleton organizer, as the central downstream factor that mediates HIF2α-dependent neutrophil motility. Thus, we propose that the novel PHD2-HIF2α-RhoA axis is vital to the initial stages of inflammation because it promotes neutrophil movement through highly confined tissue landscapes.

Details

Original languageEnglish
Pages (from-to)3416-3427
Number of pages12
JournalBlood
Volume137
Issue number24
Publication statusPublished - 17 Jun 2021
Peer-reviewedYes

External IDs

PubMed 33619535
Scopus 85108582665

Keywords