Transposition of Sleeping beauty plasmid and minicircle into T cells using Nucleofector technology
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Abstract
Objective: Study on the transposition of Sleeping Beauty plasmid and minicircle in the transposition of chimeric antigen receptors into T cells using Nucleofector technology. Subjects and methods: Fresh blood samples were processed and separated peripheral blood mononuclear cells (PBMC), then this cells were counted and analyzed by flow cytometry, the transpositions of plasmid and minicircle were conduct to create CAR-T. Finally, the transposition efficiency was evaluated by flow cytometry analysis. Results: The transposition efficiency of the second generation CAR-T CD19RCD137/pSB plasmid construct (25.88%) was higher than that of the fourth-generation iCasp9-IL15/pSB CAR-T (14.72%), and the minicircle CAR-T CD19RCD137/pSB (35.12%) was higher than that of the iCasp9-IL15/pSB CAR-T (23.48%) with p<0.05. The viable cell rate of the second-generation CD19RCD137/pSB CAR-T (48.9%) was higher than that of the fourth-generation iCasp9-IL15/pSB CAR-T (25.4%), and the minicircle CD19RCD137/pSB CAR-T (35.12%) was higher than that of the iCasp9-IL15/pSB CAR-T (23.48%) with p<0.05. Cell proliferation results (4 days) with IL-2 (100U/mL) demonstrated that the PBMC population retained its function after the transposition. Conclusion: Transposition of CAR-T cell blocks based on the second- and fourth-generation plasmid and minicircle were successfully conducted that created a foundation for proliferation experiments and testing T cell function.
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Keywords
Sleeping Beauty plasmid, Sleeping Beauty minicircle, Nucleofector technology
References
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