Stimulation via the CD43 coreceptor augments T cell proliferation during the early phase of antigen-induced activation

Mawieh Hamad, R. Lee Mosley, Jin Wang, John R. Klein

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

R2/60 is a monoclonal antibody (mAb) that recognizes the murine CD43 molecule expressed on mature T cells, developing thymocytes, and a subset of bone marrow hematopoietic stem cells. Recent studies using R2/60 demonstrate that CD43 is a costimulatory receptor involved in the activation of murine T cells. In the present study we have examined the kinetics of CD43-mediated costimulation in murine T cell populations including purified CD4+ and CD8+ peripheral T cells, and T cells activated in antigen-induced mixed-lymphocyte cultures. In each population, CD43 stimulation significantly enhanced T cell proliferation compared to non-CD43 activated cultures. CD43 costimulation was greatest in conjunction with suboptimal CD3 stimulation, and was most efficient during the early phase of antigen-driven activation, suggesting that under normal biologic conditions the role of CD43 may be to augment T cell responses early in immune activation.

Original languageEnglish (US)
Pages (from-to)77-82
Number of pages6
JournalDevelopmental and Comparative Immunology
Volume20
Issue number1
DOIs
StatePublished - Jan 1 1996

Keywords

  • Activation
  • CD43
  • Costimulation
  • Mixed-lymphocyte reaction
  • T cells

ASJC Scopus subject areas

  • Immunology
  • Developmental Biology

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