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@ARTICLE{Cirac:178375,
author = {A. Cirac and R. Poirey$^*$ and M. Dieckmeyer and K. Witter
and H.-J. Delecluse$^*$ and U. Behrends and J. Mautner},
title = {{I}mmunoinformatic {A}nalysis {R}eveals {A}ntigenic
{H}eterogeneity of {E}pstein-{B}arr {V}irus {I}s
{I}mmune-{D}riven.},
journal = {Frontiers in immunology},
volume = {12},
issn = {1664-3224},
address = {Lausanne},
publisher = {Frontiers Media},
reportid = {DKFZ-2022-00025},
pages = {796379},
year = {2021},
note = {#EA:F100#},
abstract = {Whole genome sequencing of Epstein-Barr virus (EBV)
isolates from around the world has uncovered pervasive
strain heterogeneity, but the forces driving strain
diversification and the impact on immune recognition
remained largely unknown. Using a data mining approach, we
analyzed more than 300 T-cell epitopes in 168 published EBV
strains. Polymorphisms were detected in approximately $65\%$
of all CD8+ and $80\%$ of all CD4+ T-cell epitopes and these
numbers further increased when epitope flanking regions were
included. Polymorphisms in CD8+ T-cell epitopes often
involved MHC anchor residues and resulted in changes of the
amino acid subgroup, suggesting that only a limited number
of conserved T-cell epitopes may represent generic target
antigens against different viral strains. Although
considered the prototypic EBV strain, the rather low degree
of overlap with most other viral strains implied that B95.8
may not represent the ideal reference strain for T-cell
epitopes. Instead, a combinatorial library of consensus
epitopes may provide better targets for diagnostic and
therapeutic purposes when the infecting strain is unknown.
Polymorphisms were significantly enriched in epitope versus
non-epitope protein sequences, implicating immune selection
in driving strain diversification. Remarkably, CD4+ T-cell
epitopes in EBNA2, EBNA-LP, and the EBNA3 family appeared to
be under negative selection pressure, hinting towards a
beneficial role of immune responses against these latency
type III antigens in virus biology. These findings validate
this immunoinformatics approach for providing novel insight
into immune targets and the intricate relationship of host
defense and virus evolution that may also pertain to other
pathogens.},
keywords = {Epstein-Barr virus (Other) / T-cell epitope (Other) /
immunoinformatics (Other) / strain variants (Other) / virus
evolution (Other)},
cin = {F100},
ddc = {610},
cid = {I:(DE-He78)F100-20160331},
pnm = {316 - Infektionen, Entzündung und Krebs (POF4-316)},
pid = {G:(DE-HGF)POF4-316},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34975903},
pmc = {pmc:PMC8716887},
doi = {10.3389/fimmu.2021.796379},
url = {https://inrepo02.dkfz.de/record/178375},
}