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Engineering AvidCARs for combinatorial antigen recognition and reversible control of CAR function

Abstract:
T cells engineered to express chimeric antigen receptors (CAR-T cells) have shown impressive clinical efficacy in the treatment of B cell malignancies. However, the development of CAR-T cell therapies for solid tumors is hampered by the lack of truly tumor-specific antigens and poor control over T cell activity. Here we present an avidity-controlled CAR (AvidCAR) platform with inducible and logic control functions. The key is the combination of (i) an improved CAR design which enables controlled CAR dimerization and (ii) a significant reduction of antigen-binding affinities to introduce dependence on bivalent interaction, i.e. avidity. The potential and versatility of the AvidCAR platform is exemplified by designing ON-switch CARs, which can be regulated with a clinically applied drug, and AND-gate CARs specifically recognizing combinations of two antigens. Thus, we expect that AvidCARs will be a highly valuable platform for the development of controllable CAR therapies with improved tumor specificity.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1038/s41467-020-17970-3

Authors


Publisher:
Nature Research
Journal:
Nature communications More from this journal
Volume:
11
Pages:
1-15
Article number:
ARTN 4166
Place of publication:
England
Publication date:
2020-08-20
Acceptance date:
2020-07-23
DOI:
EISSN:
2041-1723
ISSN:
2041-1723
Pmid:
32820173


Language:
English
Keywords:
Pubs id:
1127743
Local pid:
pubs:1127743
Deposit date:
2020-10-20
ARK identifier:

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