Histamine regulates autoreactive T cell activation and adhesiveness in inflamed brain microcirculation

Marilena Lapilla, Barbara Gallo, Marianna Martinello, Claudio Procaccini, Massimo Costanza, Silvia Musio, Barbara Rossi, Stefano Angiari, Cinthia Farina, Lawrence Steinman, Giuseppe Matarese, Gabriela Constantin, Rosetta Pedotti

Research output: Contribution to journalArticlepeer-review

Abstract

Histamine may contribute to the pathology of MS and its animal model EAE. We explored the effects of histamine and specific HR agonists on activation and migratory capacity of myelin-autoreactive T cells. We show that histamine in vitro inhibits proliferation and IFN-γ production of mouse T cells activated against PLP139-151. These effects were mimicked by the H1R agonist HTMT and the H2R agonist dimaprit and were associated with reduced activation of ERK1/2 kinase and with increased levels of cell cycle inhibitor p27Kip-1, both involved in T cell proliferation and anergy. H1R and H2R agonists reduced spontaneous and chemokine-induced adhesion of autoreactive T cells to ICAM-1 in vitro and blocked firm adhesion of these cells in inflamed brain microcirculation in vivo. Thus histamine, through H1R and H2R, inhibits activation of myelin-autoreactive T cells and their ability to traffic through the inflamed BBB. Strategies aimed at interfering with the histamine axis might have relevance in the therapy of autoimmune disease of the CNS.

Original languageEnglish
Pages (from-to)259-267
Number of pages9
JournalJournal of Leukocyte Biology
Volume89
Issue number2
DOIs
Publication statusPublished - Feb 2011

Keywords

  • Autoimmunity
  • Chemokine
  • Cytokine
  • EAE
  • MS

ASJC Scopus subject areas

  • Cell Biology
  • Immunology

Fingerprint Dive into the research topics of 'Histamine regulates autoreactive T cell activation and adhesiveness in inflamed brain microcirculation'. Together they form a unique fingerprint.

Cite this