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Abstract

Cancer Research

Rapid In Vitro Cytotoxicity Evaluation of Jurkat Expressing Chimeric Antigen Receptor using Fluorescent Imaging

Published: October 27th, 2023

DOI:

10.3791/65560

1Department of Radiation Oncology, University of Kansas Cancer Center, 2Department of Cancer Biology, University of Kansas Cancer Center, 3BioEngineering Program, University of Kansas, 4Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, 5University of Kansas Cancer Center, 6Kansas Institute for Precision Medicine, University of Kansas Medical Center

* These authors contributed equally

Abstract

Chimeric antigen receptor (CAR) T cells are at the forefront of oncology. A CAR is constructed of a targeting domain (usually a single chain variable fragment, scFv), with an accompanying intra-chain linker, followed by a hinge, transmembrane, and costimulatory domain. Modification of the intra-chain linker and hinge domain can have a significant effect on CAR-mediated killing. Considering the many different options for each part of a CAR construct, there are large numbers of permutations. Making CAR-T cells is a time-consuming and expensive process, and making and testing many constructs is a heavy time and material investment. This protocol describes a platform to rapidly evaluate hinge-optimized CAR constructs in Jurkat cells (CAR-J). Jurkat cells are an immortalized T cell line with high lentivirus uptake, allowing for efficient CAR transduction. Here, we present a platform to rapidly evaluate CAR-J using a fluorescent imager, followed by confirmation of cytolysis in PBMC-derived T cells.

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Keywords CAR T cells

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