PMID- 28085643 OWN - NLM STAT- MEDLINE DCOM- 20180102 LR - 20180124 IS - 1557-8976 (Electronic) IS - 0882-8245 (Linking) VI - 30 IP - 3 DP - 2017 Apr TI - Presentation of a Conserved Adenoviral Epitope on HLA-C*0702 Allows Evasion of Natural Killer but Not T Cell Responses. PG - 149-156 LID - 10.1089/vim.2016.0145 [doi] AB - Infection with adenovirus is a major cause of infectious mortality in children following hematopoietic stem-cell transplantation. While adoptive transfer of epitope-specific T cells is a particularly effective therapeutic approach, there are few suitable adenoviral peptide epitopes described to date. Here, we describe the adenoviral peptide epitope FRKDVNMVL from hexon protein, and its variant FRKDVNMIL, that is restricted by human leukocyte antigen (HLA)-C*0702. Since HLA-C*0702 can be recognized by both T cells and natural killer (NK) cells, we characterized responses by both cell types. T cells specific for FRKDVNMVL were detected in peripheral blood mononuclear cells expanded from eight of ten healthy HLA-typed donors by peptide-HLA multimer staining, and could also be detected by cultured interferon gamma ELISpot assays. Surprisingly, HLA-C*0702 was not downregulated during infection, in contrast to the marked downregulation of HLA-A*0201, suggesting that adenovirus cannot evade T cell responses to HLA-C*0702-restricted peptide epitopes. By contrast, NK responses were inhibited following adenoviral peptide presentation. Notably, presentation of the FRKDVNMVL peptide enhanced binding of HLA-C*0702 to the inhibitory receptor KIR2DL3 and decreased NK cytotoxic responses, suggesting that adenoviruses may use this peptide to evade NK responses. Given the immunodominance of FRKDVNMVL-specific T cell responses, apparent lack of HLA-C*0702 downregulation during infection, and the high frequency of this allotype, this peptide epitope may be particularly useful for adoptive T cell transfer therapy of adenovirus infection. FAU - Keib, Anna AU - Keib A AD - 1 Institute for Medical Virology, University Hospital Tubingen , Tubingen, Germany . FAU - Gunther, Patrick S AU - Gunther PS AD - 1 Institute for Medical Virology, University Hospital Tubingen , Tubingen, Germany . FAU - Faist, Benjamin AU - Faist B AD - 2 Institute for Medical Microbiology, Immunology and Hygiene, Technical University Munich , Munich, Germany . FAU - Halenius, Anne AU - Halenius A AD - 3 Institute of Virology, University Hospital Freiburg , Freiburg, Germany . FAU - Busch, Dirk H AU - Busch DH AD - 2 Institute for Medical Microbiology, Immunology and Hygiene, Technical University Munich , Munich, Germany . AD - 4 German Center for Infection Research (DZIF) , Partner Sites Tubingen and Munich, Germany . FAU - Neuenhahn, Michael AU - Neuenhahn M AD - 2 Institute for Medical Microbiology, Immunology and Hygiene, Technical University Munich , Munich, Germany . AD - 4 German Center for Infection Research (DZIF) , Partner Sites Tubingen and Munich, Germany . FAU - Jahn, Gerhard AU - Jahn G AD - 1 Institute for Medical Virology, University Hospital Tubingen , Tubingen, Germany . FAU - Dennehy, Kevin M AU - Dennehy KM AD - 1 Institute for Medical Virology, University Hospital Tubingen , Tubingen, Germany . AD - 4 German Center for Infection Research (DZIF) , Partner Sites Tubingen and Munich, Germany . LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170113 PL - United States TA - Viral Immunol JT - Viral immunology JID - 8801552 RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (HLA-C Antigens) SB - IM MH - Adenoviruses, Human/*immunology MH - *Antigen Presentation MH - Epitopes, T-Lymphocyte/immunology/*metabolism MH - HLA-C Antigens/*metabolism MH - Humans MH - *Immune Evasion MH - Killer Cells, Natural/*immunology MH - T-Lymphocytes/*immunology OTO - NOTNLM OT - adenovirus OT - adoptive transfer therapy OT - immunoevasion OT - peptide epitope EDAT- 2017/01/14 06:00 MHDA- 2018/01/03 06:00 CRDT- 2017/01/14 06:00 PHST- 2017/01/14 06:00 [pubmed] PHST- 2018/01/03 06:00 [medline] PHST- 2017/01/14 06:00 [entrez] AID - 10.1089/vim.2016.0145 [doi] PST - ppublish SO - Viral Immunol. 2017 Apr;30(3):149-156. doi: 10.1089/vim.2016.0145. Epub 2017 Jan 13.