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Selective targeting of engineered T cells using orthogonal IL-2 cytokine-receptor complexes

Science. 2018 Mar 2;359(6379):1037-1042. doi: 10.1126/science.aar3246.

Abstract

Interleukin-2 (IL-2) is a cytokine required for effector T cell expansion, survival, and function, especially for engineered T cells in adoptive cell immunotherapy, but its pleiotropy leads to simultaneous stimulation and suppression of immune responses as well as systemic toxicity, limiting its therapeutic use. We engineered IL-2 cytokine-receptor orthogonal (ortho) pairs that interact with one another, transmitting native IL-2 signals, but do not interact with their natural cytokine and receptor counterparts. Introduction of orthoIL-2Rβ into T cells enabled the selective cellular targeting of orthoIL-2 to engineered CD4+ and CD8+ T cells in vitro and in vivo, with limited off-target effects and negligible toxicity. OrthoIL-2 pairs were efficacious in a preclinical mouse cancer model of adoptive cell therapy and may therefore represent a synthetic approach to achieving selective potentiation of engineered cells.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • CD4-Positive T-Lymphocytes / immunology*
  • CD8-Positive T-Lymphocytes / immunology*
  • Cell Engineering / methods*
  • HEK293 Cells
  • Humans
  • Immunotherapy, Adoptive / methods*
  • Melanoma, Experimental
  • Mice
  • Neoplasms / therapy*
  • Receptors, Interleukin-2 / genetics
  • Receptors, Interleukin-2 / immunology*

Substances

  • Receptors, Interleukin-2