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Cell Immunol. 1995 Oct 15;165(2):289-93.

Studies evaluating the antitumor activity and toxicity of interleukin-15, a new T cell growth factor: comparison with interleukin-2.

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  • 1Immunex Research and Development Corporation, Seattle, Washington 98101, USA.

Abstract

Interleukin-15 is a new cytokine that stimulates the proliferation of T cells and other cells of the immune system. Some of the biological properties of interleukin-15 overlap that of interleukin-2. Using murine models, the present studies have shown that interleukin-15, in vivo, is three to four times more potent than interleukin-2 in generating cytolytic effector splenocytes that lyse YAC target cells. It is approximately one-third as potent as interleukin-2 in inducing specific cytolytic cells that lyse allogeneic target cells. Interleukin-15 is approximately half as potent as interleukin-2 in suppressing pulmonary metastasis induced by MCA-205 tumor cells. The dose of interleukin-15 required to induce pulmonary vascular leak in mice is six times higher than that required for interleukin-2. These results support the view that interleukin-15 exhibits a therapeutic index that is superior to interleukin-2.

PMID:
7553894
[PubMed - indexed for MEDLINE]
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