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Gene expression in response to low-intensity pulsed ultrasound treatment of bone marrow cells under osteogenic conditions in vitro

ABSTRACT: We performed a comprehensive analysis of gene expression changes following low-intensity pulsed ultrasound (LIPUS) treatment of cultured bone marrow cells under bone formation conditions, using cDNA microarray analysis Bone marrow cells were obtained from the femora of rats and were suspended in an osteogenic medium to make a cell culture. After cultures were established, test cultures were exposed to LIPUS via the base of the cell culture plates for 15 min/day on days 3–9 (LIPUS group). Control cultures (without LIPUS exposure) were otherwise treated identically to the LIPUS group. On day 10, total RNA was extracted from both sets of cultures and hybridized to microarray slides, the data sets were analysed. Markers for differentiated osteoblasts and osteocytes, as well as collagen-related genes, cell adhesion factors were up-regulated in LIPUS group on day 10.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE70662 | GEO | 2015/07/10

SECONDARY ACCESSION(S): PRJNA289308

REPOSITORIES: GEO

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Gene expression in response to low-intensity pulsed ultrasound treatment of bone marrow cells under osteogenic conditions in vitro

Project description:We performed a comprehensive analysis of gene expression changes following low-intensity pulsed ultrasound (LIPUS) treatment of cultured bone marrow cells under bone formation conditions, using cDNA microarray analysis Bone marrow cells were obtained from the femora of rats and were suspended in an osteogenic medium to make a cell culture. After cultures were established, test cultures were exposed to LIPUS via the base of the cell culture plates for 15 min/day on days 3–9 (LIPUS group). Control cultures (without LIPUS exposure) were otherwise treated identically to the LIPUS group. On day 10, total RNA was extracted from both sets of cultures and hybridized to microarray slides, the data sets were analysed. Markers for differentiated osteoblasts and osteocytes, as well as collagen-related genes, cell adhesion factors were up-regulated in LIPUS group on day 10. Gene expression in response to LIPUS treatment of bone marrow cells were measured on day 10 after cultures were established. Experiments were performed at each conditions (LIPUS or Control).

2015-07-10 | E-GEOD-70662 | biostudies-arrayexpress

Identification of early response genes to low-intensity pulsed ultrasound in bone marrow stromal cells

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Identification of genes responsive to low-intensity pulsed ultrasound (LIPUS) in MC3T3-E1 preosteoblast cells

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Project description:Although LIPUS has been shown to enhance fracture healing, the underlying mechanism of LIPUS remains to be fully elucidated. Here, to understand the molecular mechanism underlying cellular responses to LIPUS, we investigated gene expression profiles in mouse MC3T3-E1 preosteoblast cells using a GeneChipM-BM-. system. The mouse preosteoblast MC3T3-E1 cells were treated with LIPUS (30 mW/cm2) for 20 min, followed by culturing for 24 h at 37M-KM-^ZC. Mock-treated cells served as the control. Total RNA samples were prepared from the cells, and the quality of the RNA was analyzed using a Bioanalyzer 2100. Gene expression was monitored by an Affymetrix GeneChipM-BM-. system with a Mouse Genome 430 2.0 array. Sample preparation for array hybridization was carried out as described in the manufacturer's instructions.

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