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Generation of survivin-specific CD8+ T effector cells by dendritic cells pulsed with protein or selected peptides

M Schmitz1, P Diestelkoetter, B Weigle

  • 1Institute for Immunology, Medical Faculty, Technical University of Dresden, Germany.

Cancer Research
|September 15, 2000
PubMed

Insights

Survivin, a tumor-associated protein, can stimulate CD8+ effector T cells. This discovery highlights survivin as a promising target for novel cancer immunotherapies.

Area of Science:

  • Immunology
  • Oncology
  • Biochemistry

Background:

  • Adjuvant anticancer therapy relies on tumor-associated antigens for CD8+ cytotoxic T cell recognition.
  • Limited identification of widely expressed tumor-associated proteins hinders therapeutic development.
  • Survivin, an apoptosis inhibitor, is increasingly recognized as a prevalent tumor-associated protein.

Purpose of the Study:

  • To investigate survivin's potential to induce specific CD8+ effector T cells.
  • To evaluate survivin-derived peptides as targets for T cell-mediated tumor immunotherapy.

Main Methods:

  • In vitro stimulation of T cells from healthy donors using autologous dendritic cells (DCs) pulsed with recombinant survivin.
  • Assessment of CD8+ cytotoxic T cell activation via lysis of survivin-expressing B cell transfectants.
  • Prediction and validation of HLA-A*0201-binding survivin peptides using a peptide-motif scoring system.

Main Results:

  • Survivin successfully induced specific CD8+ effector T cells in vitro.
  • Two survivin peptides (ELTLGE-FLKL and TLPPAWQPFL) were identified as binders to HLA-A*0201.
  • Both validated peptides induced CD8+ effector T cells when presented by DCs; one peptide arose from natural survivin processing.

Conclusions:

  • Survivin is a viable target for inducing tumor-specific CD8+ T cell responses.
  • Survivin-based protein and peptide immunotherapies offer a broadly applicable strategy for cancer treatment.

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