Table 2

Comparison of phenotype and function of tumor-specific human primary T cells overexpressing IL-2, IL-7, IL-15, or IL-21

ParameterΔLNGFRIL-2IL-7IL-15IL-21
Maintenance of T-cell numbers      
    Accumulation ++ ++ − 
    Antigen-induced proliferation +++ ++ 
    Bcl-2 expression − 
    Long-term persistence ND ++ 
Effector function      
    CTL activity ++ 
    Granzyme A expression ++ ++ 
    IFN-γ expression ++ ++ 
    TNF-α expression ++ ++ 
    IL-2 expression +++ 
Cell surface phenotype      
    CD45RACD45RO+ expression 
    CCR7 expression − 
    CD62L expression − − 
    CD28 expression − − − 
    CD27 expression − − − 
    TEM1− − − 
    CD4+Foxp3+
    Long-term persistence of TCM-like cells ND 
Avoidance of XGVHD −− −− − 
Tumor-free survival ++ ++ 
ParameterΔLNGFRIL-2IL-7IL-15IL-21
Maintenance of T-cell numbers      
    Accumulation ++ ++ − 
    Antigen-induced proliferation +++ ++ 
    Bcl-2 expression − 
    Long-term persistence ND ++ 
Effector function      
    CTL activity ++ 
    Granzyme A expression ++ ++ 
    IFN-γ expression ++ ++ 
    TNF-α expression ++ ++ 
    IL-2 expression +++ 
Cell surface phenotype      
    CD45RACD45RO+ expression 
    CCR7 expression − 
    CD62L expression − − 
    CD28 expression − − − 
    CD27 expression − − − 
    TEM1− − − 
    CD4+Foxp3+
    Long-term persistence of TCM-like cells ND 
Avoidance of XGVHD −− −− − 
Tumor-free survival ++ ++ 

Parameters were scored using ΔLNGFR-transduced T cells as a baseline. 0 indicates equal to ΔLNGFR-transduced T cells; +, ++, +++, greater than ΔLNGFR-transduced T cells; −, −−, less than ΔLNGFR-transduced T cells; and ND, not determined.

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