The C5a-C5aR1 complement axis is essential for neutrophil recruitment to draining lymph nodes via high endothelial venules in cutaneous leishmaniasis.

Détails

ID Serval
serval:BIB_793AA043940A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
The C5a-C5aR1 complement axis is essential for neutrophil recruitment to draining lymph nodes via high endothelial venules in cutaneous leishmaniasis.
Périodique
Cell reports
Auteur⸱e⸱s
Prat-Luri B., Neal C., Passelli K., Ganga E., Amore J., Firmino-Cruz L., Petrova T.V., Müller A.J., Tacchini-Cottier F.
ISSN
2211-1247 (Electronic)
Statut éditorial
Publié
Date de publication
03/05/2022
Peer-reviewed
Oui
Volume
39
Numéro
5
Pages
110777
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
Neutrophils are specialized innate immune cells known for their ability to fight pathogens. However, the mechanisms of neutrophil trafficking to lymph nodes are not fully clear. Using a murine model of dermal infection with Leishmania parasites, we observe a transient neutrophil influx in draining lymph nodes despite sustained recruitment to the infection site. Cell-tracking experiments, together with intravital two-photon microscopy, indicate that neutrophil recruitment to draining lymph nodes occurs minimally through lymphatics from the infected dermis, but mostly through blood vessels via high endothelial venules. Mechanistically, neutrophils do not respond to IL-1β or macrophage-derived molecules. Instead, they are guided by the C5a-C5aR1 axis, using L-selectin and integrins, to extravasate into the draining lymph node parenchyma. We also report that C5, the C5a precursor, is locally produced in the draining lymph node by lymphatic endothelial cells. Our data establish and detail organ-specific mechanisms of neutrophil trafficking.
Mots-clé
Animals, Complement C5a, Endothelial Cells, Leishmaniasis, Cutaneous, Lymph Nodes, Mice, Neutrophil Infiltration, Neutrophils, Receptor, Anaphylatoxin C5a, Venules, CP: Immunology, Leishmania, blood vessels, complement, cutaneous leishmaniasis, lymph node, lymphatics, migration, neutrophils, swarming
Pubmed
Web of science
Open Access
Oui
Création de la notice
17/05/2022 13:43
Dernière modification de la notice
06/06/2022 6:36
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