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Selective targeting of engineered T cells using orthogonal IL-2 cytokine-receptor complexes
Selective targeting of engineered T cells using orthogonal IL-2 cytokine-receptor complexes SCIENCE Sockolosky, J. T., Trotta, E., Parisi, G., Picton, L., Su, L. L., Le, A. C., Chhabra, A., Silveria, S. L., George, B. M., King, I. C., Tiffany, M. R., Jude, K., Sibener, L. V., Baker, D., Shizuru, J. A., Ribas, A., Bluestone, J. A., Garcia, K. 2018; 359 (6379): 1037-+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-2Rß 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.
View details for PubMedID 29496879
View details for PubMedCentralID PMC5947856