A conserved E7-derived cytotoxic T lymphocyte epitope expressed on human papillomavirus 16-transformed HLA-A2+ epithelial cancers

Angelika B. Riemer, Derin B. Keskin, Guanglan Zhang, Maris Handley, Karen S. Anderson, Vladimir Brusic, Bruce Reinhold, Ellis L. Reinherz

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Human Papillomavirus 16 (HPV-16) has been identified as the causative agent of 50% of cervical cancers and many other HPV-associated tumors. The transforming potential/tumor maintenance capacity of this high risk HPV is mediated by two viral oncoproteins, E6 and E7, making them attractive targets for therapeutic vaccines. Of 21 E6 and E7 peptides computed to bind HLA-A*0201, 10 were confirmed through TAP-deficient T2 cell HLA stabilization assay. Those scoring positive were investigated to ascertain which were naturally processed and presented by surface HLA molecules for CTL recognition. Because IFNγ ELISpot frequencies from healthy HPV-exposed blood donors against HLA-A*0201-binding peptides were unable to identify specificities for tumor targeting, their physical presence among peptides eluted from HPV-16-transformed epithelial tumor HLA-A*0201 immunoprecipitates was analyzed by MS3 Poisson detection mass spectrometry. Only one epitope (E711-19) highly conserved among HPV-16 strains was detected. This 9-mer serves to direct cytolysis by T cell lines, whereas a related 10-mer (E711-20), previously used as a vaccine candidate, was neither detected by MS3 on HPV-transformed tumor cells nor effectively recognized by 9-mer specific CTL. These data underscore the importance of precisely defining CTL epitopes on tumor cells and offer a paradigm for T cell-based vaccine design.

Original languageEnglish
Pages (from-to)29608-29622
Number of pages15
JournalJournal of Biological Chemistry
Volume285
Issue number38
DOIs
Publication statusPublished - Sep 17 2010
Externally publishedYes

Fingerprint

HLA-A2 Antigen
T-Lymphocyte Epitopes
Human papillomavirus 16
Cytotoxic T-Lymphocytes
Tumors
Neoplasms
Vaccines
T-cells
Peptides
Epitopes
Cells
T-Lymphocytes
Oncogene Proteins
Blood Donors
Uterine Cervical Neoplasms
Mass spectrometry
Assays
Mass Spectrometry
Blood
Stabilization

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology
  • Molecular Biology
  • Medicine(all)

Cite this

Riemer, A. B., Keskin, D. B., Zhang, G., Handley, M., Anderson, K. S., Brusic, V., ... Reinherz, E. L. (2010). A conserved E7-derived cytotoxic T lymphocyte epitope expressed on human papillomavirus 16-transformed HLA-A2+ epithelial cancers. Journal of Biological Chemistry, 285(38), 29608-29622. https://doi.org/10.1074/jbc.M110.126722

A conserved E7-derived cytotoxic T lymphocyte epitope expressed on human papillomavirus 16-transformed HLA-A2+ epithelial cancers. / Riemer, Angelika B.; Keskin, Derin B.; Zhang, Guanglan; Handley, Maris; Anderson, Karen S.; Brusic, Vladimir; Reinhold, Bruce; Reinherz, Ellis L.

In: Journal of Biological Chemistry, Vol. 285, No. 38, 17.09.2010, p. 29608-29622.

Research output: Contribution to journalArticle

Riemer, AB, Keskin, DB, Zhang, G, Handley, M, Anderson, KS, Brusic, V, Reinhold, B & Reinherz, EL 2010, 'A conserved E7-derived cytotoxic T lymphocyte epitope expressed on human papillomavirus 16-transformed HLA-A2+ epithelial cancers', Journal of Biological Chemistry, vol. 285, no. 38, pp. 29608-29622. https://doi.org/10.1074/jbc.M110.126722
Riemer, Angelika B. ; Keskin, Derin B. ; Zhang, Guanglan ; Handley, Maris ; Anderson, Karen S. ; Brusic, Vladimir ; Reinhold, Bruce ; Reinherz, Ellis L. / A conserved E7-derived cytotoxic T lymphocyte epitope expressed on human papillomavirus 16-transformed HLA-A2+ epithelial cancers. In: Journal of Biological Chemistry. 2010 ; Vol. 285, No. 38. pp. 29608-29622.
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