The use of high-dose interleukin-2 (IL-2) has fallen out of favor due to severe life-threatening side effects. We have recently described a unique way of directly targeting IL-2 to cytotoxic lymphocytes using a virally encoded immune evasion protein and an IL-2 mutant that avoids off-target side effects such as activation of regulatory T cells and vascular endothelium.
Keywords: Cytokine; Interleukin-2 (IL-2); NKG2D; cytotoxic lymphocytes; immunotargeting; immunotherapy; natural killer cell (NK).