FTY720-enhanced T cell homing is dependent on CCR2, CCR5, CCR7, and CXCR4: evidence for distinct chemokine compartments

J Immunol. 2004 Jul 15;173(2):855-65. doi: 10.4049/jimmunol.173.2.855.

Abstract

FTY720 stimulates CCR7-driven T cell homing to peripheral lymph nodes (LN) by direct activation of sphingosine 1-phosphate receptors, along with the participation of multidrug transporters, 5-lipoxygenase, and G protein-coupled receptors for chemokines. In this study, we demonstrate that FTY720 also directly stimulates in vitro T cell chemotaxis to CCR2-CCL2, but not to a variety of other chemokines, including CCR5-CCL3/4/5 and CXCR4-CXCL12. FTY720 influences CCR2-CCL2-driven migration through activation of the multidrug transporters, Abcb1 and Abcc1, and through 5-lipoxygenase activity. In vivo administration of FTY720 induces chemokine-dependent migration of T cells in the thymus, peripheral blood, LN, and spleen. The CCR7 and CCR2 chemokine ligands are required for both T cell sequestration in LN and thymic T cell egress following FTY720 administration. Furthermore, FTY720 administration uncovers a requirement for CXCR4 ligands for LN homing, but not for thymic egress, and CCR5 for thymic egress, but not LN homing. FTY720-driven splenic and peripheral blood T cell egress are both independent of CCR2, CCR5, CCR7, or CXCR4. These results indicate that FTY720- and sphingosine 1-phosphate receptor-stimulated T cell migration are dependent on the restricted usage of chemokine receptor-ligand pairs within discrete anatomic compartments.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Arachidonate 5-Lipoxygenase / physiology
  • Cell Movement / drug effects
  • Cell Movement / physiology*
  • Fingolimod Hydrochloride
  • Immunosuppressive Agents / pharmacology
  • Ligands
  • Mice
  • Propylene Glycols / pharmacology
  • Receptors, CCR2
  • Receptors, CCR5 / physiology*
  • Receptors, CCR7
  • Receptors, CXCR4 / physiology*
  • Receptors, Chemokine / drug effects
  • Receptors, Chemokine / physiology*
  • Receptors, G-Protein-Coupled / physiology
  • Receptors, Leukotriene / physiology
  • Receptors, Lysophospholipid
  • Sphingosine / analogs & derivatives
  • T-Lymphocytes / drug effects
  • T-Lymphocytes / physiology*

Substances

  • Ccr2 protein, mouse
  • Ccr7 protein, mouse
  • Immunosuppressive Agents
  • Ligands
  • Propylene Glycols
  • Receptors, CCR2
  • Receptors, CCR5
  • Receptors, CCR7
  • Receptors, CXCR4
  • Receptors, Chemokine
  • Receptors, G-Protein-Coupled
  • Receptors, Leukotriene
  • Receptors, Lysophospholipid
  • Arachidonate 5-Lipoxygenase
  • Fingolimod Hydrochloride
  • Sphingosine