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- W2918576770 abstract "We describe the ex vivo expansion of haematopoietic stem/progenitor cells (HSPCs) with consideration of their eventual in-vivo niche. We firstly fabricated hierarchically structured scaffolds (lattices derived via three-dimensional plotting combined with electrospun submicron fibers coated with vitronectin to increase cell affinity). We also applied intermittent hydrostatic pressure (IHP) to mimic the physical environment of the in vivo niche. In the absence of mechanical stimuli, the cell phenotype (CD34+, CD34+CD38-) remained excellent in the vitronectin-treated group. Two IHP regimens were tested; optimally, cells were pressurized (20 kPa) for 2 min and then rested for 13 min. On day 7 of culture, the total cell number had increased 21.2-fold and that of CD34+ cells 10.94-fold. CD34+ and CD34+CD38- cells constituted 44.50 and 44.07% of total cells, respectively. Colony-forming counts and the long-term culture-initiating cell assay showed that clonogenic potential was greatly improved under our experimental conditions. Scaffolds with hierarchical structures were valuable in this context. Furthermore, ex vivo expansion of HSPCs was improved by physical stimulation." @default.
- W2918576770 created "2019-03-11" @default.
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- W2918576770 date "2019-03-04" @default.
- W2918576770 modified "2023-09-25" @default.
- W2918576770 title "The combined effects of hierarchical scaffolds and mechanical stimuli on <i>ex vivo</i> expansion of haematopoietic stem/progenitor cells" @default.
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- W2918576770 doi "https://doi.org/10.1080/21691401.2019.1573180" @default.
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