Figure 2.
Lengthening of the linker between variable domains in the GD2 CAR improves activity in vitro. A, Schematic of the GD2-XL CAR construct. B, Chromium release assay to measure specific cytotoxicity, performed as described for Fig. 1. GD2 CAR T cells or GD2-XL CAR T cells were incubated with the indicated targets (either GD2+ SY5Y or GD2low NB16), and nontransduced (NTD) T cells or CD19 CAR T cells were used as a negative control. Data show mean ± standard error of the mean (SEM) of three separate experiments using three different T-cell donors.
