Reduction of CD1d expression in vivo minimally affects NKT-enhanced antibody production but boosts B-cell memory

Gillian A. Lang, Amy M. Johnson, T. Scott Devera, Sunil K. Joshi, Mark L. Lang

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The CD1d-binding glycolipid α-galactosylceramide exerts potent adjuvant effects on T-dependent humoral immunity. The mechanism is driven by cognate interaction between CD1d-expressing B cells and TCR-expressing type I CD1d-restricted NKT cells. Thus, far positive effects of alpha-galactosylceramide have been observed on initial and sustained antibody titers as well as B-cell memory. Following vaccination, each of these features is desirable, but good B-cell memory is of paramount importance for long-lived immunity. We therefore tested the hypothesis that CD1d expression in vivo differentially affects initial antibody titers versus B-cell memory responses. CD1d+/+ and CD1d+/- mice were generated and immunized with antigen plus CD1d ligand before analysis of cytokine expression, CD40L expression, initial and longer term antibody responses and B-cell memory. As compared with CD1d+/+ controls, CD1d+/- mice had equivalent numbers of total NKT cells, lower cytokine production, fewer CD40L-expressing NKT cells, lower initial antibody responses, similar long-term antibody responses and higher B-cell memory. Our data indicate that weak CD1d antigen presentation may facilitate good B-cell memory without compromising antibody responses. This work may impact vaccine design since over-stimulation of NKT cells at the time of vaccination may not lead to optimal B-cell memory.

Original languageEnglish (US)
Pages (from-to)251-260
Number of pages10
JournalInternational Immunology
Volume23
Issue number4
DOIs
StatePublished - Apr 2011
Externally publishedYes

Keywords

  • Antibody
  • B lymphocyte
  • CD1d
  • Memory
  • NKT cell

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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