The junctional adhesion molecule JAM-C regulates polarized transendothelial migration of neutrophils in vivo

Abigail Woodfin, Mathieu-Benoit Voisin, Martina Beyrau, Bartomeu Colom, Dorothée Caille, Frantzeska-Maria Diapouli, Gerard B Nash, Triantafyllos Chavakis, Steven M Albelda, G Ed Rainger, Paolo Meda, Beat A Imhof, Sussan Nourshargh

Research output: Contribution to journalArticlepeer-review

353 Citations (Scopus)

Abstract

The migration of neutrophils into inflamed tissues is a fundamental component of innate immunity. A decisive step in this process is the polarized migration of blood neutrophils through endothelial cells (ECs) lining the venular lumen (transendothelial migration (TEM)) in a luminal-to-abluminal direction. By real-time confocal imaging, we found that neutrophils had disrupted polarized TEM ('hesitant' and 'reverse') in vivo. We noted these events in inflammation after ischemia-reperfusion injury, characterized by lower expression of junctional adhesion molecule C (JAM-C) at EC junctions, and they were enhanced by blockade or genetic deletion of JAM-C in ECs. Our results identify JAM-C as a key regulator of polarized neutrophil TEM in vivo and suggest that reverse TEM of neutrophils can contribute to the dissemination of systemic inflammation.
Original languageEnglish
Pages (from-to)761-9
Number of pages9
JournalNature Immunology
Volume12
Issue number8
DOIs
Publication statusPublished - Aug 2011

Keywords

  • Microscopy, Confocal
  • Animals
  • Neutrophils
  • Mice
  • Transendothelial and Transepithelial Migration
  • Image Processing, Computer-Assisted
  • Cell Adhesion Molecules
  • Endothelium, Vascular
  • Reperfusion Injury
  • Inflammation
  • Immunoglobulins

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