Figure 5.
HOBIT shRNA nearly abrogates formation of CD56+ natural killer (NK) cells. Stem cell cultures were transduced and cultured until day 35. The generation of CD56+ NK cells was monitored by flow cytometry in samples taken at days 24, 26, 28, 31 and 35. (A) Exemplary flow cytometry dot plots displaying staining for CD56 within the GFP+ fractions at days 24 and 35. (B) The formation of CD56+ cells within the transduced GFP+ and non-transduced GFP− fractions is shown for shHOBIT and shControl cultures. Expansion rates are calculated from measured cell numbers at the respective days and the flow cytometry-derived percentages. Differences in transduction efficiency were corrected for by normalizing the obtained values to the number of GFP+ and GFP− cells at day 8, respectively. Results are calculated form four independent experiments, two of them performed in triplicates, using different donor cells and are displayed as mean ± SEM (*p < 0.05, ***p < 0.001).