Characterization of antigen-specific CD8 T lymphocyte responses in skin and peripheral blood following intradermal peptide vaccination.
Qiyuan Chen, Heather Jackson, Mark Shackleton, Phillip Parente, Wendie Hopkins, Sue Sturrock, Duncan MacGregor, Eugene Maraskovsky, Tsin Yee Tai, Nektaria Dimopoulos, Kelly-Anne Masterman, Tina Luke, Ian D Davis, Weisan Chen, Jonathan Cebon
Cancer Immunity | Published : 2005
Immune responses to cancer vaccines are commonly tested by measuring cutaneous reactions to intradermal (i.d.) antigen. When well-characterized peptide epitopes are injected i.d., infiltrates of CD4+ and CD8+ T lymphocytes are frequently seen. In this study, we have further characterized T cells derived from vaccine-infiltrating lymphocyte (VIL) responses. We found that the infiltrates capable of producing IFN-gamma and cytolytic activity could recognize vaccine peptide, as well as antigen-positive melanoma cells. We studied antigen-specific T cell responses from VILs and peripheral blood in 10 patients who participated in a clinical trial. All patients received systemic Flt3 ligand (20 micr..View full abstract