(A) Recognition of IGR-Heu tumor cell line by autologous
T cell clones. IGR-Heu cells (30,000 cells/well) were incubated with
Heu127, Heu171, H2307, or H23018 T cells (3,000 cells/well). After
24 h, the amount of TNFα produced by the clones was measured by
testing the killing activity of the culture supernatant on the
TNF-sensitive WEHI-164c13 cells. (B) Recognition of the
peptide-pulsed IGR-Heu cell line by the autologous H23018 clone.
IGR-Heu cells were incubated for 20 min at RT with the indicated
concentrations of mutated α-actinin-4 peptide before addition of
H23018 lymphocytes. After 24 h, the amount of TNFα was measured
as in A.