Simultaneous Deletion of Endogenous TCRαβ for TCR Gene Therapy Creates an Improved and Safe Cellular Therapeutic

Abstract excerpt

Generation of an optimal T cell therapeutic expressing high frequencies of transgenic T cell receptor (tgTCR) is essential for improving TCR gene therapy. Upon TCR gene transfer, presence of endogenous TCRαβ reduces expression of tgTCR due to TCR mixed-dimer formation and competition for binding CD3. Knockout (KO) of endogenous TCRαβ was recently achieved using CRISPR/Cas9 editing of the TRAC or TRBC loci,...

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