1. Enrichment of T-lymphocytes from leukemic blood using inertial microfluidics toward improved chimeric antigen receptor-T cell manufacturing.
- Author
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Elsemary MT, Maritz MF, Smith LE, Warkiani ME, and Thierry B
- Subjects
- Humans, Microfluidics methods, Leukemia, Lymphocytic, Chronic, B-Cell therapy, Leukemia, Lymphocytic, Chronic, B-Cell immunology, Cell Separation methods, B-Lymphocytes immunology, Precursor Cell Lymphoblastic Leukemia-Lymphoma therapy, Precursor Cell Lymphoblastic Leukemia-Lymphoma immunology, Receptors, Antigen, T-Cell immunology, Receptors, Antigen, T-Cell metabolism, T-Lymphocytes immunology, Receptors, Chimeric Antigen immunology, Immunotherapy, Adoptive methods
- Abstract
Chimeric antigen receptor cell therapy is a successful immunotherapy for the treatment of blood cancers. However, hurdles in their manufacturing remain including efficient isolation and purification of the T-cell starting material. Herein, we describe a one-step separation based on inertial spiral microfluidics for efficient enrichment of T-cells in B-cell acute lymphoblastic leukemia (ALL) and B-cell chronic lymphocytic leukemia patient's samples. In healthy donors used to optimize the process, the lymphocyte purity was enriched from 65% (SD ± 0.2) to 91% (SD ± 0.06) and T-cell purity was enriched from 45% (SD ± 0.1) to 73% (SD ± 0.02). Leukemic samples had higher starting B-cells compared to the healthy donor samples. Efficient enrichment and recovery of lymphocytes and T-cells were achieved in ALL samples with B-cells, monocytes and leukemic blasts depleted by 80% (SD ± 0.09), 89% (SD ± 0.1) and 74% (SD ± 0.09), respectively, and a 70% (SD ± 0.1) T-cell recovery. Chronic lymphocytic leukemia samples had lower T-cell numbers, and the separation process was less efficient compared to the ALL. This study demonstrates the use of inertial microfluidics for T-cell enrichment and depletion of B-cell blasts in ALL, suggesting its potential to address a key bottleneck of the chimeric antigen receptor-T manufacturing workflow., Competing Interests: Declaration of competing interest The authors declare no conflict of interest., (Copyright © 2024 International Society for Cell & Gene Therapy. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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