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352) In order to assess whether the biocompatible polymeric silica/biosilica can serve as a morphogenetically active matrix suitable for three-dimensional (3D) cell growth, or even for 3D cell bioprinting, SaOS-2 cells were embedded into a Na-alginate-based hydrogel.
2015 Journal of tissue engineering and regenerative medicine
* Development of a morphogenetically active scaffold for three-dimensional growth of bone cells: biosilica-alginate hydrogel for SaOS-2 cell cultivation.
- Polymeric silica is formed from ortho-silicate during a sol-gel formation process, while biosilica is the product of an enzymatically driven bio-polycondensation reaction. Both polymers have recently been described as a template that induces an increased expression of the genes encoding bone morphogenetic protein 2 (BMP-2) and osteoprotegerin in osteoblast-related SaOS-2 cells; simultaneously or subsequently the cells respond with enhanced hydroxyapatite formation. In order to assess whether the biocompatible polymeric silica/biosilica can serve as a morphogenetically active matrix suitable for three-dimensional (3D) cell growth, or even for 3D cell bioprinting, SaOS-2 cells were embedded into a Na-alginate-based hydrogel. Four different gelatinous hydrogel matrices were used for suspending SaOS-2 cells: (a) the hydrogel alone; (b) the hydrogel with 400 μM ortho-silicate; (c) the hydrogel supplemented with 400 μM ortho-silicate and recombinant silicatein to allow biosilica synthesis to occur; and (d) the hydrogel with ortho-silicate and BSA. The SaOS-2 cells showed an increased growth if silica/biosilica components were present in the hydrogel. Likewise intensified was the formation of hydroxyapatite nodules in the silica-containing hydrogels. After an incubation period of 2 weeks, cells present in silica-containing hydrogels showed a significantly higher expression of the genes encoding the cytokine BMP-2, the major fibrillar structural protein collagen 1 and likewise of carbonic anhydrase. It is concluded that silica, and to a larger extent biosilica, retains its morphogenetic/osteogenic potential after addition to Na-alginate-based hydrogels. This property might qualify silica hydrogels to be also used as a matrix for 3D cell printing.
=>茂み, 成長, 増加, 発展, 栽培, 腫よう, 成長物
Overview of noun growth
The noun growth has 7 senses (first 5 from tagged texts)
1. (37) growth, growing, maturation, development, ontogeny, ontogenesis -- ((biology) the process of
an individual organism growing organically; a purely biological unfolding of events involved in an
organism changing gradually from a simple to a more complex level; "he proposed an indicator of
osseous development in children")
2. (20) growth -- (a progression from simpler to more complex forms; "the growth of culture")
3. (3) increase, increment, growth -- (a process of becoming larger or longer or more numerous or
more important; "the increase in unemployment"; "the growth of population")
4. (3) growth -- (vegetation that has grown; "a growth of trees"; "the only growth was some salt
grass")
5. (1) emergence, outgrowth, growth -- (the gradual beginning or coming forth; "figurines presage
the emergence of sculpture in Greece")
6. growth -- ((pathology) an abnormal proliferation of tissue (as in a tumor))
7. growth -- (something grown or growing; "a growth of hair")
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