A simplified method for the clinical-scale generation of central memory-like CD8+ T cells after transduction with lentiviral vectors encoding antitumor antigen T-cell receptors

J Immunother. 2010 Jul-Aug;33(6):648-58. doi: 10.1097/CJI.0b013e3181e311cb.

Abstract

Adoptive transfer of antigen-specific CD8+ T cells can effectively treat patients with metastatic melanoma. Recent efforts have emphasized the in vitro generation of antitumor T cells by transduction of genes encoding antitumor T-cell receptors. At present, lentiviral vector-mediated transduction of CD8+ T cells relies on anti-CD3/CD28 bead stimulation; however, this method fails to efficiently expand CD8+ T cells. Herein we sought to establish a methodology for lentiviral vector transduction using optimal activating agents for efficient gene delivery and robust expansion of CD8+ T cells. To overcome the inability of anti-CD3/CD28 beads to efficiently expand CD8+ T cells, we evaluated alternative activating agents including feeder cells from allogeneic peripheral blood mononuclear cells and plate-bound anti-CD3 antibody. Analyses of gene transfer, cell phenotype, fold expansion, and biologic activities were used to determine the optimal methodology. Plate-bound anti-CD3 provided an ideal activation platform that afforded optimal lentiviral vector-mediated gene transfer efficiency (up to 90%), and coupled with peripheral blood mononuclear cells feeder cells yielded up to 600-fold expansion of CD8+ T cells within 12 days. The T-cell antigen receptor (TCR) engineered CD8+ T cells conferred specific antitumor activity and many displayed a central memory-like phenotype. The methodology described here could be readily applied for engineering CD8+ T cells with antitumor specificity for human adoptive immunotherapy.

Publication types

  • Research Support, N.I.H., Intramural

MeSH terms

  • Antibodies, Monoclonal / immunology
  • Antibodies, Monoclonal / metabolism
  • Antigens, Neoplasm / immunology
  • CD3 Complex / immunology
  • CD8-Positive T-Lymphocytes / immunology
  • CD8-Positive T-Lymphocytes / metabolism*
  • CD8-Positive T-Lymphocytes / pathology
  • Cell Proliferation
  • Genetic Therapy / methods
  • Genetic Vectors / genetics
  • Humans
  • Immunologic Memory
  • Immunophenotyping
  • Immunotherapy, Adoptive*
  • Lentivirus / genetics*
  • Lymphocyte Activation / genetics
  • Melanoma / genetics
  • Melanoma / immunology
  • Melanoma / therapy*
  • Neoplasm Metastasis
  • Receptors, Antigen, T-Cell / genetics
  • Receptors, Antigen, T-Cell / immunology
  • Receptors, Antigen, T-Cell / metabolism*
  • Transduction, Genetic*

Substances

  • Antibodies, Monoclonal
  • Antigens, Neoplasm
  • CD3 Complex
  • Receptors, Antigen, T-Cell