Study on optimizing production of CAR-T cell mass

Ngo Thu Hang1, Văn Mão Cấn2,
1 Vietnam Medical Military University
2 Bộ môn Sinh lý bệnh, Học viện Quân y

Main Article Content

Abstract

Objective: Optimizing the co-culture process of CAR-T cells and aAPC 1D2 to obtain the highest quantity and quality of CAR-T cells. Subjects and methods: Separating PBMC from fresh blood samples. Then PBMC was analyzed by BD Facslyric flow cytometer. Transposition into PBMC using Amaxa Nucleofector 2b with T-020 program. Co-culture CAR-T and aAPC at a ratio of 2X viable CAR-T cells. CAR expression was analyzed by real-time PCR. Results: On 7th and 14th day, the number of CAR-T cells proliferated many times higher than that on 3rd day. The proliferative capacity of the two CAR-T cell generations was similar on 14th day and there was a difference of that from day 21. After 28th day, the number of iCasp9-IL15 CAR-T cells (78.62%) was higher than that of CD19RCD137 CAR-T cells (66.23%) with p>0.05. The results on day 28 showed that approximately 97% of CAR-T cells of both cell generations expressed CAR on the surface after proliferation. Conclusion: CAR-T cells proliferated effectively from 28th day on co-culture with artificial antigen-presenting cells and IL-2 with aAPC supplementation of 4 times (1st, 7th, 14th, 21st day). the obtained cells expressed CAR molecules of 97% on the surface.

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References

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