Presentation of epstein-barr virus latency antigens to CD8(+), interferon-gamma-secreting, T lymphocytes

Eur J Immunol. 1999 Dec;29(12):3995-4001. doi: 10.1002/(SICI)1521-4141(199912)29:12<3995::AID-IMMU3995>3.0.CO;2-E.

Abstract

Epstein-Barr virus (EBV) infects more than 95 % of the human population and causes an asymptomatic life-long infection in the majority of EBV carriers. Cell-mediated immunity provides resistance to EBV, as demonstrated by the occurrence of EBV-induced post-transplant lymphoproliferative disease in immunosuppressed patients. Here we looked for IFN-gamma-producing T lymphocytes in the blood of healthy donors with a rapid enzyme-linked immunospot (ELISPOT) assay, comparing as antigen presenting cells monocytes and dendritic cells (DC) infected with recombinant vaccinia virus (rVV). We found a strong CD8(+) ELISPOT response to one or more of the EBNA 3A, 3B and 3C antigens in the PBMC from 14 / 18 donors. The sensitivity of the overnight ELISPOT assay was increased using DC as antigen-presenting cells, including 3 / 3 individuals who lacked ELISPOT in PBMC. In addition, DC could markedly expand EBV-specific spots after a 7-day culture. In a smaller number of donors, we documented recognition of the subdominant LMP 1, LMP 2 and EBNA 1 antigens that are expressed in a variety of EBV-associated malignancies. Therefore our data provide more evidence for the efficacy of DC in eliciting rapid responses to EBV latency antigens in circulating CD8(+) T cells.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Antigen Presentation / immunology*
  • Antigens, Viral / immunology*
  • CD8-Positive T-Lymphocytes / immunology*
  • Dendritic Cells / immunology
  • Herpesvirus 4, Human / immunology*
  • Humans
  • Interferon-gamma / immunology
  • Interferon-gamma / metabolism
  • Recombination, Genetic
  • Vaccinia virus / genetics
  • Vaccinia virus / immunology
  • Virus Latency / immunology*

Substances

  • Antigens, Viral
  • Interferon-gamma