Table 3.
Summary of the results of comparative studies about static and rocking motion cultures
Expansion yield | Purity | Functionality changes | |||||
---|---|---|---|---|---|---|---|
Author - Year | Static system (vs.) | Static folda | Reactor fold | Culture days | Static | Reactor | |
T cells | |||||||
Tran [66] - 2007 | Bags | 247–1340 | 200–800 | 14 | – | > 98% CD4+ | Markers of cell activation increased. No detectable Treg cells produced. Cytokines are produced normally. |
NK cells | |||||||
Sutlu [94] - 2010 | Bags | 530 | 77 | 20 | 31% NK | 38% NK; 14% NKT | Degranulation and cytotoxic activity are greater in bioreactor cultures. |
Spanholtz [104] - 2011 | Bags | 759–1770 | 1435–2657 | 42 | 71 ± 9% CD56 + CD3- | 92% ± 2% CD56 + CD3- |
Higher expression of activating receptors in bioreactor cultures 27% degranulation in reactor vs 14–18% in static cultures |
Lapteva [65] - 2014 | G-rex | No difference | 9 | Fewer CD3+ T and a higher CD56 + CD3- NK cells in reactor culture | Potency is similar (phenotype and in cytotoxicity assays) | ||
Meng [97] - 2018 | Bags | No difference | 15 | Reactor improves the percentage of NK cells | There is no significant modulation of the cells’ secretome. Cytotoxicity is significantly higher for bioreactor cultures. | ||
TIL | |||||||
Sadeghi [107] - 2011 | Bags | 72 ± 11 | 228.8 ± 17.1 | 14 | No difference in CD8+ and CD4+ percentage | No difference in Phenotype | |
Somerville [64] -2012 | Bags | 1259 ± 137 | 1130 ± 127 | 14 | Lower CD8 and higher CD4 in reactor | Increased IFN-γ release to cognate peptide in reactor culture Significant phenotype differences | |
Donia [108] - 2014 | Bags | 1433 ± 887 | 5576 ± 1677 | 14 | – | > 97% CD3+ | – |
aFold = Harvested cells / Seeded cells