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Background: Chimeric antigen receptor T cells (CAR-T) against B-cell maturation antigen (BCMA) has been used to treat multiple myeloma (MM). CAR-T cells co-expressing a truncated human EGFR (tEGFR) has been proposed for in vivo cell ablation.
Methods: We designed and tested a novel anti-BCMA CAR. We transduced T cells with retroviral vectors encoding CAR and tEGFR. The anti-BCMA-CAR-transduced T cells were evaluated for the functions including cytokine production, proliferation, cytotoxicity, and in vivo tumor eradication of BCMA. Cetuximab was used for in vivo cell ablation.
Results: The CAR-T cells could specifically recognize BCMA, and anti-BCMA CAR-T cells could exhibit interferon-γ and cytotoxicity specifically produced by BCMA and eradicate tumor in vivo. Cetuximab could mediate antibody-dependent cellular cytotoxicity and in vivo elimination.
Conclusions: We confirm that BCMA is a suitable target for CAR- T cells and tEGFR is a effective tool for cellular ablation.
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| http://dx.doi.org/10.1016/j.cellimm.2021.104342 | DOI Listing |
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