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There is now considerable evidence that human tumors often express antigens that render them susceptible to lysis by cytotoxic T lymphocytes (CTLs). These findings have raised hope for the development of cancer vaccines to trigger a tumor-specific immune response in cancer patients. To optimize the immunogenicity of cancer vaccines, it is important to improve the monitoring of the immune response. The use of tetrameric soluble major histocompatibility complex (MHC) class I/peptide complexes ("tetramers") to identify tumor-specific CTLs has shown that these novel reagents allow rapid and accurate analysis of human CTL responses in cancer patients. We have used fluorescence-driven cell sorting to clone tumor-specific CTLs after staining with tetrameric MHC class I/peptide complexes. Analysis of melanoma-infiltrated lymph nodes revealed that strong CTL responses often occur in vivo, and that the reactive CTLs have substantial proliferative and tumoricidal potential.

Type

Journal article

Journal

Cancer Chemother Pharmacol

Publication Date

2000

Volume

46 Suppl

Pages

S83 - S85

Keywords

Antigens, Neoplasm, Epitopes, T-Lymphocyte, Flow Cytometry, HLA Antigens, HLA-A2 Antigen, Histocompatibility Antigens Class I, Humans, Lymph Nodes, MART-1 Antigen, Melanocytes, Melanoma, Monitoring, Immunologic, Neoplasm Proteins, T-Lymphocytes, Cytotoxic, Vitiligo, beta 2-Microglobulin