Adenosine deaminase potentiates the generation of effector, memory, and regulatory CD4+ T cells

José M. Martinez-Navio, Víctor Casanova, Rodrigo Pacheco, Isaac Naval-Macabuhay, Núria Climent, Felipe Garcia, José M. Gatell, Josefa Mallol, Teresa Gallart, Carme Lluis, Rafael Franco

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

By interacting with CD26 on the CD4+ T cell surface and with the AdoR A2B on the DC surface, ADA triggers a costimulatory signal for human T cells. The aim of this study was to know whether ADA-mediated costimulation plays a role in the differentiation of T cells. The results show that irrespective of its enzymatic activity and dependent on TNF-α, IFN-γ, and IL-6 action, ADA enhanced the differentiation of CD4 +CD45RA+CD45RO-naïve T cells toward CD4 +CD25+CD45RO+ Teffs and CD4+CD45RA- CD45RO+ memory T cells. Furthermore, ADA potentiated generation of CD4+CD25highFoxp3+ Tregs by a mechanism that seems to be mainly dependent on the enzymatic activity of ADA. Interestingly, an ADA-mediated increase on Teff, memory T cell, and Treg generation occurred, not only in cocultures from healthy individuals but also from HIV-infected patients. These data suggest that ADA is a relevant modulator of CD4+ T cell differentiation, even in cells from immunologically compromised individuals.

Original languageEnglish (US)
Pages (from-to)127-136
Number of pages10
JournalJournal of Leukocyte Biology
Volume89
Issue number1
DOIs
StatePublished - Jan 2011
Externally publishedYes

Keywords

  • CD26
  • CD45RA/CD45RO
  • Dendritic cells
  • Foxp3
  • T cell activation
  • Th1

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Cell Biology

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