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TGF-beta1 effect on human osteosarcoma cell line MNNG/HOS

ABSTRACT: Investigation of whole genome gene expression level changes in human osteosarcoma cell line MNNG/HOS treated by TGF-beta1 for three days (mesophase) and five days (sarcospheres iOSCs), compared to non-treatment cells (residual adherent cells).

ORGANISM(S): Homo sapiens

PROVIDER: GSE38133 | GEO | 2012/05/23

SECONDARY ACCESSION(S): PRJNA167380

REPOSITORIES: GEO

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TGF-beta1 effect on human osteosarcoma cell line MNNG/HOS

Project description:Investigation of whole genome gene expression level changes in human osteosarcoma cell line MNNG/HOS treated by TGF-beta1 for three days (mesophase) and five days (sarcospheres iOSCs), compared to non-treatment cells (residual adherent cells). A three chip study using total RNA cover from three cultures of non-treatment human osteosarcoma cell line MNNG/HOS (residual adherent cells), TGF-beta1 treated three days osteosarcoma cell line MNNG/HOS (mesophase) and TGF-beta1 treated five days osteosarcoma cell line MNNG/HOS ( only collected the suspending sarcospheres iOSCs). Each chip measures the expression level of 45033 genes from osteosarcoma cell line MNNG/HOS.

2012-05-22 | E-GEOD-38133 | biostudies-arrayexpress

Expression analysis of human osteosarcoma cell line MNNG/HOS sarcospheres, hypoxia-induced sarcospheres and TGF-beta1-induced sarcospheres

Project description:Invastigation of whole genome gene expression level changes in human osteosarcoma cell line MNNG/HOS sarcospheres,hypoxia-induced sarcospheres and TGF-beta1 induced sarcospheres. A three chip study using total RNA cover from three cultures of human osteosarcoma cell line MNNG/HOS sarcospheres, hypoxia-induced sarcospheres and TGF-beta1-induced sarcospheres. Each chip measures the expression level of 45033 genes from osteosarcoma cell line MNNG/HOS.

2012-05-22 | E-GEOD-38134 | biostudies-arrayexpress

Expression analysis of human osteosarcoma cell line MNNG/HOS sarcospheres, hypoxia-induced sarcospheres and TGF-beta1-induced sarcospheres

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MNNG/HOS cells and sarcospheres

Project description:This SuperSeries is composed of the following subset Series: GSE38133: TGF-beta1 effect on human osteosarcoma cell line MNNG/HOS GSE38134: Expression analysis of human osteosarcoma cell line MNNG/HOS sarcospheres, hypoxia-induced sarcospheres and TGF-beta1-induced sarcospheres Refer to individual Series

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Gene expression profiling of HOS (human osteosarcoma) cells exposed to fluoride

Project description:Though fluoride is considered an essential trace element, chronic exposure to fluoride is known to cause toxic effects. Chronic exposure of high concentration of fluoride may leads to fluorosis. To understand the molecular mechanism of fluoride induced toxicity gene expression profiling was performed on osteosarcoma cells (HOS). Cells were exposed to sub-lethal concentration of fluoride (8 ppm) for 30 days. Our result demonstrates that fluoride alters multiple biological pathways including bone development, osteoblast differentiation and apoptotic pathways. HOS cells grown in MEM were treated with fluoride and total RNA was isolated from cells after 30 days exposure. Three replicates per group were used for the experiment.

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Gene expression profiling of HOS (human osteosarcoma) cells exposed to fluoride

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Project description:TGF-beta1 effect on human osteosarcoma cell line MNNG/HOS

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Project description:Due to the lack of a precise in vitro model that can mimic the nature microenvironment in osteosarcoma, the understanding of its resistance to chemical drugs remains limited. Here, we report a novel three-dimensional model of osteosarcoma constructed by seeding tumor cells (MG-63 and MNNG/HOS Cl #5) within in demineralized bone matrix scaffolds. Demineralized bone matrix scaffolds retain the original components of the natural bone matrix (hydroxyapatite and collagen type I), and possess good biocompatibility allowing osteosarcoma cells to proliferate and aggregate into clusters within the pores. Growing within the scaffold conferred elevated resistance to doxorubicin on MG-63 and MNNG/HOS Cl #5 cell lines as compared with two-dimensional cultures. Transcriptomic analysis showed an increased enrichment for drug resistance genes along with enhanced glutamine metabolism in osteosarcoma cells in demineralized bone matrix scaffolds. Inhibition of glutamine metabolism resulted a decrease in drug resistance of osteosarcoma, which could be restored by α-ketoglutarate supplementation. Overall, our study suggests that microenvironmental cues in demineralized bone matrix scaffolds can enhance osteosarcoma drug responses and that targeting glutamine metabolism may be a strategy for treating osteosarcoma drug resistance.

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