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Cell. 2016 Feb 11;164(4):770-9. doi: 10.1016/j.cell.2016.01.011. Epub 2016 Jan 28.

Precision Tumor Recognition by T Cells With Combinatorial Antigen-Sensing Circuits.

Author information

1
Department of Cellular & Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA; Center for Systems and Synthetic Biology, University of California, San Francisco, San Francisco, CA 94158, USA; Howard Hughes Medical Institute, San Francisco, CA 94158, USA.
2
Department of Cellular & Molecular Pharmacology, University of California, San Francisco, San Francisco, CA 94158, USA; Center for Systems and Synthetic Biology, University of California, San Francisco, San Francisco, CA 94158, USA; Howard Hughes Medical Institute, San Francisco, CA 94158, USA. Electronic address: wendell.lim@ucsf.edu.

Abstract

T cells can be re-directed to kill cancer cells using chimeric antigen receptors (CARs) or T cell receptors (TCRs). This approach, however, is constrained by the rarity of tumor-specific single antigens. Targeting antigens also found on bystander tissues can cause life-threatening adverse effects. A powerful way to enhance ON-target activity of therapeutic T cells is to engineer them to require combinatorial antigens. Here, we engineer a combinatorially activated T cell circuit in which a synthetic Notch receptor for one antigen induces the expression of a CAR for a second antigen. These dual-receptor AND-gate T cells are only armed and activated in the presence of dual antigen tumor cells. These T cells show precise therapeutic discrimination in vivo-sparing single antigen "bystander" tumors while efficiently clearing combinatorial antigen "disease" tumors. This type of precision dual-receptor circuit opens the door to immune recognition of a wider range of tumors. VIDEO ABSTRACT.

PMID:
26830879
PMCID:
PMC4752902
DOI:
10.1016/j.cell.2016.01.011
[Indexed for MEDLINE]
Free PMC Article

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