Mechanosensitive Osteogenesis on Native Cellulose Scaffolds for Bone Tissue Engineering.
Leblanc Latour, M.; Pelling, A. E.
Show abstract
In recent years, plant-derived cellulosic biomaterials have become a popular way to create scaffolds for a variety of tissue engineering applications. Moreover, such scaffolds possess similar physical properties (porosity, stiffness) that resemble bone tissues and have been explored as potential biomaterials for tissue engineering applications. Here, plant-derived cellulose scaffolds were seeded with MC3T3-E1 pre-osteoblast cells. Moreover, to assess the potential of these biomaterials, we also applied cyclic hydrostatic pressure (HP) to the cells and scaffolds over time to mimic a bone-like environment more closely. After one week of proliferation, cell-seeded scaffolds were exposed to HP up to 270 KPa at a frequency of 1Hz, once per day, for up to two weeks. Scaffolds were incubated in osteogenic inducing media (OM) or regular culture media (CM). The effect of cyclic HP combined with OM on cell-seeded scaffolds resulted in an increase of differentiated cells. This corresponded to an upregulation of alkaline phosphatase activity and scaffold mineralization. Importantly, the results reveal that well known mechanosensitive pathways cells which regulate osteogenesis appear to remain functional even on novel plant-derived cellulosic biomaterials.
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