The chemorepellent, SLIT2, bolsters innate immunity against Staphylococcus aureus

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung


  • Vikrant K Bhosle - , Hospital for Sick Children (Autor:in)
  • Chunxiang Sun - , University of Toronto (Autor:in)
  • Sajedabanu Patel - , Hospital for Sick Children (Autor:in)
  • Tse Wing Winnie Ho - , Unity Health Toronto (Autor:in)
  • Johannes Westman - , Hospital for Sick Children (Autor:in)
  • Dustin A Ammendolia - , Hospital for Sick Children (Autor:in)
  • Fatemeh Mirshafiei Langari - , Hospital for Sick Children (Autor:in)
  • Noah Fine - , University of Toronto (Autor:in)
  • Nicole Toepfner - , Klinik und Poliklinik für Kinder- und Jugendmedizin (Autor:in)
  • Zhubing Li - , Hospital for Sick Children (Autor:in)
  • Manraj Sharma - , Hospital for Sick Children (Autor:in)
  • Judah Glogauer - , Hospital for Sick Children (Autor:in)
  • Mariana I Capurro - , Hospital for Sick Children (Autor:in)
  • Nicola L Jones - , Hospital for Sick Children (Autor:in)
  • Jason T Maynes - , Hospital for Sick Children (Autor:in)
  • Warren L Lee - , Unity Health Toronto (Autor:in)
  • Michael Glogauer - , University of Toronto (Autor:in)
  • Sergio Grinstein - , Hospital for Sick Children (Autor:in)
  • Lisa A Robinson - , Hospital for Sick Children (Autor:in)


Neutrophils are essential for host defense against Staphylococcus aureus (S. aureus). The neuro-repellent, SLIT2, potently inhibits neutrophil chemotaxis, and might, therefore, be expected to impair antibacterial responses. We report here that, unexpectedly, neutrophils exposed to the N-terminal SLIT2 (N-SLIT2) fragment kill extracellular S. aureus more efficiently. N-SLIT2 amplifies reactive oxygen species production in response to the bacteria by activating p38 mitogen-activated protein kinase that in turn phosphorylates NCF1, an essential subunit of the NADPH oxidase complex. N-SLIT2 also enhances the exocytosis of neutrophil secondary granules. In a murine model of S. aureus skin and soft tissue infection (SSTI), local SLIT2 levels fall initially but increase subsequently, peaking at 3 days after infection. Of note, the neutralization of endogenous SLIT2 worsens SSTI. Temporal fluctuations in local SLIT2 levels may promote neutrophil recruitment and retention at the infection site and hasten bacterial clearance by augmenting neutrophil oxidative burst and degranulation. Collectively, these actions of SLIT2 coordinate innate immune responses to limit susceptibility to S. aureus.


PublikationsstatusVeröffentlicht - 29 Sept. 2023

Externe IDs

PubMedCentral PMC10541174
Scopus 85172827516



  • Animals, Humans, Mice, Chemotaxis, Leukocyte, Immunity, Innate, Neutrophils, Staphylococcal Infections/microbiology, Staphylococcus aureus