Hepatocyte Growth Factor Receptor c-Met Instructs T Cell Cardiotropism and Promotes T Cell Migration to the Heart via Autocrine Chemokine Release

Izabela Komarowska, David Coe, Guosu Wang, Robert Haas, Claudio Mauro, Madhav Kishore, Dianne Cooper, Suchita Nadkarni, Hongmei Fu, Daniel a. Steinbruchel, Costantino Pitzalis, Graham Anderson, Pat Bucy, Giovanna Lombardi, Ross Breckenridge, Federica m. Marelli-berg

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)
172 Downloads (Pure)

Abstract

Effector-T-cell-mediated immunity depends on the efficient localization of antigen-primed lymphocytes to antigen-rich non-lymphoid tissue, which is facilitated by the expression of a unique set of "homing" receptors acquired by memory T cells. We report that engagement of the hepatocyte growth factor (HGF) receptor c-Met by heart-produced HGF during priming in the lymph nodes instructs T cell cardiotropism, which was associated with a specialized homing "signature" (c-Met(+)CCR4(+)CXCR3(+)). c-Met signals facilitated T cell recruitment to the heart via the chemokine receptor CCR5 by inducing autocrine CCR5 ligand release. c-Met triggering was sufficient to support cardiotropic T cell recirculation, while CCR4 and CXCR3 sustained recruitment during heart inflammation. Transient pharmacological blockade of c-Met during T cell priming led to enhanced survival of heart, but not skin, allografts associated with impaired localization of alloreactive T cells to heart grafts. These findings suggest c-Met as a target for development of organ-selective immunosuppressive therapies.

Original languageEnglish
Pages (from-to)1087-1099
Number of pages13
JournalImmunity
Volume42
Issue number6
DOIs
Publication statusPublished - 16 Jun 2015

Bibliographical note

Copyright © 2015 The Authors. Published by Elsevier Inc. All rights reserved.

Keywords

  • Animals
  • Autocrine Communication
  • Cell Movement
  • Cells, Cultured
  • Graft Rejection
  • Heart
  • Heart Transplantation
  • Hepatocyte Growth Factor
  • Humans
  • Immunologic Memory
  • Indoles
  • Lymphocyte Activation
  • Mice
  • Mice, SCID
  • Molecular Targeted Therapy
  • Proto-Oncogene Proteins c-met
  • RNA, Small Interfering
  • Receptors, CCR5
  • Receptors, Chemokine
  • Receptors, Lymphocyte Homing
  • Signal Transduction
  • Sulfones
  • T-Lymphocytes

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