Table 1.
Start of culture | Post IFN-γ isolation | Post expansion | ||||||
---|---|---|---|---|---|---|---|---|
Donor No. | Cell count | Cell count | Purity CD3+/IFNγ+ [%] | Expansion factor | Absolute CD4+ | Absolute CD8+ | Specific CD4 [%] | Specific CD8 [%] |
1 | 500 × 106 | 5.4 × 106 | 44.63 | 351 | *1600 × 106 | *131 × 106 | 28.04 | 7.82 |
7 | 500 × 106 | 20.0 × 106 | 54.31 | 19 | *224 × 106 | *118 × 106 | 14.99 | 0.98 |
4 | 400 × 106 | 3.3 × 106 | 59.26 | 212 | 31 × 106 | 41 × 106 | 37.79 | 0.02 |
8 | 1000 × 106 | 2.4 × 106 | 82.53 | 79 | *38 × 106 | *29.15 × 106 | 25.65 | 0.50 |
Extrapolated cell count, assuming that all cells are used for expansion.
Absolute number and frequencies of T cells after large scale GMP grade enrichment and expansion of PBMCs from 4 donors: Cells were generated according to the protocol and analyzed at different timepoints. Asterics indicate preparations for which not all available cells were expanded after IFNγ-based enrichment. In these cases the cell number was extrapolated calculated by the expansion factor.