Beneficial effect of a CXCR4 agonist in murine models of systemic inflammation

Inflammation. 2012 Feb;35(1):130-7. doi: 10.1007/s10753-011-9297-5.

Abstract

The chemokine CXC receptor 4 (CXCR4) is activated by stromal cell-derived factor (SDF-1α). CXCR4 may be part of a lipopolysaccharide (LPS) sensing co-clustering complex that modulates TLR4 activation and evidence suggest that SDF-1α can activate anti-inflammatory signaling pathways and suppress inflammation. In the present study we examined the hypothesis that the SDF-1α peptide analog and CXCR4 agonist CTCE-0214 is anti-inflammatory in three distinct models of murine systemic inflammation. Our findings demonstrate that CTCE-0214 in vivo significantly suppressed plasma tumor necrosis factor alpha (TNF-α) increases in acute endotoxemia and following zymosan-induced multiple organ dysfunction syndrome (MODS). In both models, CTCE-0214 did not suppress plasma increases in the anti-inflammatory cytokine interleukin (IL)-10. CTCE-0214 improved survival without antibiotics in a model of severe sepsis induced by cecal ligation and puncture (CLP). CTCE-0214 also decreased plasma increases in IL-6 but not TNF-α and IL-10 in response to CLP-induced inflammation. We demonstrated in a moderately severe model of CLP (one puncture) that IL-6 levels at 24 h were similar to sham controls. However in severe CLP (two punctures) plasma IL-6 levels were markedly elevated. Plasma SDF-1α levels varied inversely with the plasma IL-6. In addition to the beneficial effect of CTCE-0214 in these models of systemic inflammation in vivo, we also demonstrated that the analog dose dependently suppressed LPS-induced IL-6 production in bone marrow-derived macrophages. CTCE-0214 therefore may be beneficial in controlling inflammation sepsis and systemic inflammatory syndromes.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Chemokine CXCL12 / blood
  • Chemokine CXCL12 / metabolism*
  • Chemokine CXCL12 / pharmacology
  • Disease Models, Animal
  • Endotoxemia / pathology
  • Interleukin-10 / biosynthesis
  • Interleukin-10 / blood
  • Interleukin-6 / blood
  • Lipopolysaccharides / immunology
  • Macrophages / drug effects
  • Macrophages / metabolism
  • Male
  • Mice
  • Multiple Organ Failure / chemically induced
  • Multiple Organ Failure / drug therapy*
  • Receptors, CXCR4 / agonists*
  • Receptors, CXCR4 / immunology*
  • Sepsis / drug therapy
  • Systemic Inflammatory Response Syndrome / drug therapy*
  • Tumor Necrosis Factor-alpha / blood
  • Zymosan

Substances

  • CTCE-0214
  • CXCR4 protein, mouse
  • Chemokine CXCL12
  • Interleukin-6
  • Lipopolysaccharides
  • Receptors, CXCR4
  • Tumor Necrosis Factor-alpha
  • Interleukin-10
  • Zymosan