Autonomous growth and increased cytotoxicity of natural killer cells expressing membrane-bound interleukin-15

Natural killer (NK) cell survival and, hence, cytotoxicity requires cytokine support. We determined whether expression of interleukin-15 (IL-15) in a nonsecretory, membrane-bound form could sustain NK cell growth. We linked the human IL15 gene to that encoding CD8α transmembrane domain (mbIL15). Aft...

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