Preservation and redirection of HPV16E7-specific T cell receptors for immunotherapy of cervical cancer

Clin Immunol. 2005 Feb;114(2):119-29. doi: 10.1016/j.clim.2004.11.005.

Abstract

Human papilloma virus (HPV) type 16 infections of the genital tract are associated with the development of cervical cancer (CxCa) in women. HPV16-derived oncoproteins E6 and E7 are expressed constitutively in these lesions and might therefore be attractive candidates for T-cell-mediated adoptive immunotherapy. However, the low precursor frequency of HPV16E7-specific T cells in patients and healthy donors hampers routine isolation of these cells for adoptive transfer. To overcome this problem, we have isolated T cell receptor (TCR) genes from four different HPV16E7-specific healthy donor and patient-derived human cytotoxic T lymphocyte (CTL) clones. We examined whether genetic engineering of peripheral blood-derived CD8+ T cells in order to express HPV16E711-20-specific TCRs is feasible for adoptive transfer purposes. Reporter cells (Jurkat/MA) carrying a transgenic TCR were shown to bind relevant but not irrelevant tetramers. Moreover, these TCR-transgenic Jurkat/MA cells showed reactivity towards relevant target cells, indicating proper functional activity of the TCRs isolated from already available T cell clones. We next introduced an HPV16E711-20-specific TCR into blood-derived, CD8+ recipient T cells. Transgenic CTL clones stained positive for tetramers presenting the relevant HPV16E711-20 epitope and biological activity of the TCR in transduced CTL was confirmed by lytic activity and by interferon (IFN)-gamma secretion upon antigen-specific stimulation. Importantly, we show recognition of the endogenously processed and HLA-A2 presented HPV16E711-20 CTL epitope by A9-TCR-transgenic T cells. Collectively, our data indicate that HPV16E7 TCR gene transfer is feasible as an alternative strategy to generate human HPV16E7-specific T cells for the treatment of patients suffering from cervical cancer and other HPV16-induced malignancies.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Base Sequence
  • Cloning, Molecular
  • Female
  • Flow Cytometry
  • Humans
  • Immunotherapy, Adoptive / methods*
  • Jurkat Cells
  • Molecular Sequence Data
  • Oncogene Proteins, Viral / immunology*
  • Papillomaviridae / immunology*
  • Papillomavirus E7 Proteins
  • Papillomavirus Infections / immunology*
  • Papillomavirus Infections / virology
  • RNA, Viral / chemistry
  • RNA, Viral / genetics
  • Receptors, Antigen, T-Cell / genetics
  • Receptors, Antigen, T-Cell / immunology*
  • Reverse Transcriptase Polymerase Chain Reaction
  • T-Lymphocytes, Cytotoxic / immunology
  • T-Lymphocytes, Cytotoxic / virology
  • Transduction, Genetic
  • Uterine Cervical Neoplasms / immunology
  • Uterine Cervical Neoplasms / therapy*
  • Uterine Cervical Neoplasms / virology

Substances

  • Oncogene Proteins, Viral
  • Papillomavirus E7 Proteins
  • RNA, Viral
  • Receptors, Antigen, T-Cell
  • oncogene protein E7, Human papillomavirus type 16