ELIZA

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299409 occurrences (No.76 in the rank) during 5 years in the PubMed. [no cache] 500 found

302) 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.

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PMID:23585362 DOI:10.1002/term.1745

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.

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(1)101 and	(12)8 including	(23)4 for	(34)2 13
(2)36 null	(13)7 encoding	(24)4 from	(35)2 but
(3)28 are	(14)7 involved	(25)4 related	(36)2 can
(4)26 were	(15)7 which	(26)4 with	(37)2 coding
(5)25 in	(16)6 (PCGs),	(27)3 had	(38)2 expressed
(6)16 2	(17)6 use	(28)3 have	(39)2 is
(7)14 (13	(18)5 may	(29)3 stop	(40)2 on
(8)14 22	(19)5 that	(30)3 such	(41)2 ranged
(9)12 start	(20)4 (PCGs)	(31)2 (cytb,	(42)2 to
(10)11 of	(21)4 as	(32)2 (pnad1
(11)9 was	(22)4 associated	(33)2 (srfAA,

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--- WordNet output for genes --- =>発生, 起源, 起こり, 生成, 創始, 創世記 Overview of noun gene The noun gene has 1 sense (no senses from tagged texts) 1. gene, cistron, factor -- ((genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity; "genes were formerly called factors") --- WordNet end ---