CXCL17 is a proinflammatory chemokine and promotes neutrophil trafficking

Emily Lowry, Rani C. Chellappa, Brigith Penaranda, Kirti V. Sawant, Maki Wakamiya, Roberto P. Garofalo, Krishna Rajarathnam

Research output: Contribution to journalArticlepeer-review

Abstract

CXCL17, a novel member of the CXC chemokine class, has been implicated in several human pathologies, but its role in mediating immune response is not well understood. Characteristic features of immune response include resident macrophages orchestrating successive and structured recruitment of neutrophils and monocytes to the insult site. Here, we show that Cxcl17 knockout (KO) mice, compared with the littermate wild-type control mice, were significantly impaired in peritoneal neutrophil recruitment post-lipopolysaccharide (LPS) challenge. Further, the KO mice show dysregulated Cxcl1, Cxcr2, and interleukin-6 levels, all of which directly impact neutrophil recruitment. Importantly, the KO mice showed no difference in monocyte recruitment post-LPS challenge or in peritoneal macrophage levels in both unchallenged and LPS-challenged mice. We conclude that Cxcl17 is a proinflammatory chemokine and that it plays an important role in the early proinflammatory response by promoting neutrophil recruitment to the insult site.

Original languageEnglish (US)
Pages (from-to)1177-1182
Number of pages6
JournalJournal of Leukocyte Biology
Volume115
Issue number6
DOIs
StatePublished - Jun 2024

Keywords

  • inflammation
  • lipopolysaccharide
  • macrophage
  • monocyte
  • peritoneum

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Cell Biology

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