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. 1995 Jan;25(1):102-10.
doi: 10.1002/eji.1830250119.

Epstein-Barr virus isolates with the major HLA B35.01-restricted cytotoxic T lymphocyte epitope are prevalent in a highly B35.01-positive African population

S P Lee  1 , S Morgan, J Skinner, W A Thomas, S R Jones, J Sutton, R Khanna, H C Whittle, A B Rickinson
Affiliations

Epstein-Barr virus isolates with the major HLA B35.01-restricted cytotoxic T lymphocyte epitope are prevalent in a highly B35.01-positive African population

S P Lee et al. Eur J Immunol. 1995 Jan.

Abstract

An influence of cytotoxic T lymphocyte (CTL) response over Epstein-Barr virus (EBV) evolution was first suggested by the finding that virus isolates from highly HLA-A11-positive Oriental populations were specifically mutated in two immunodominant A11-restricted CTL epitopes. Here we turn to a second HLA allele, B35.01 and show that B35.01-restricted CTL responses in Caucasian donors reproducibly map to a single peptide epitope, YPLHEQHGM, representing residues 458-466 of the type 1 EBV nuclear antigen 3A protein (B95.8 strain). In this case, however, most EBV isolates from a highly B35.01-positive population (in The Gambia) either retained the CTL epitope sequence or carried a mutation (P-->S at position 2) which conserved antigenicity; changes leading to reduced antigenicity (Y-->N at position 1) were found in only a minority of cases. Furthermore, CTL recognizing the YPLHEQHGM epitope could be reactivated from the blood of some B35.01-positive Gambian donors by in vitro stimulation with the synthetic peptide, indicating that epitope-specific immunity does exist in this population. Possible differences between the A11-based and B35.01-based studies are discussed.

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