Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA130429 | ENA |
REPOSITORIES: ENA
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Project description:TGF-beta has an oncogenic response in glioblastoma and it is considered to be a therapeutic target. We evaluated the effect of TGF-beta inhibition in glioblastoma. Differential gene expression analysis of patient-derived primary cultured glioblastoma cells treated with the TGF-beta receptor inhibitor, LY2109761 11 patient-derived cell cultures from 11 patients were treated with 2microM of the TGF-beta receptor inhibitor, LY2109761, for 3 hours or left untreated and RNA was isolated and microarray analysis was performed
2011-01-27 | E-GEOD-23935 | biostudies-arrayexpress
Project description:TGF-beta has an oncogenic response in glioblastoma and it is considered to be a therapeutic target. We evaluated the effect of TGF-beta inhibition in glioblastoma. Differential gene expression analysis of patient-derived primary cultured glioblastoma cells treated with the TGF-beta receptor inhibitor, LY2109761
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Project description:The effect of TGF-beta receptor inhibitor Ly2109761 on glioblastoma cells in combination with photon irradiation was analysed.
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Project description:Pedro Vizán, Daniel S. J. Miller, Ilaria Gori, Debipriya Das, Bernhard Schmierer & Caroline S. Hill. Controlling long-term signaling: receptor dynamics determine attenuation and refractory behavior of the TGF-β pathway. Science Signaling 6, 305 (2013).
Understanding the complex dynamics of growth factor signaling requires both mechanistic and kinetic information. Although signaling dynamics have been studied for pathways downstream of receptor tyrosine kinases and G protein (heterotrimeric guanine nucleotide-binding protein)-coupled receptors, they have not been investigated for the transforming growth factor-β (TGF-β) superfamily pathways. Using an integrative experimental and mathematical modeling approach, we dissected the dynamic behavior of the TGF-β to Smad pathway, which is mediated by type I and type II receptor serine/threonine kinases, in response to acute, chronic, and repeated ligand stimulations. TGF-β exposure produced a transient response that attenuated over time, resulting in desensitized cells that were refractory to further acute stimulation. This loss of signaling competence depended on ligand binding, but not on receptor activity, and was restored only after the ligand had been depleted. Furthermore, TGF-β binding triggered the rapid depletion of signaling-competent receptors from the cell surface, with the type I and type II receptors exhibiting different degradation and trafficking kinetics. A computational model of TGF-β signal transduction from the membrane to the nucleus that incorporates our experimental findings predicts that autocrine signaling, such as that associated with tumorigenesis, severely compromises the TGF-β response, which we confirmed experimentally. Thus, we have shown that the long-term signaling behavior of the TGF-β pathway is determined by receptor dynamics, does not require TGF-β-induced gene expression, and influences context-dependent responses in vivo.
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Project description:Analyze TGF-beta pathway transcriptional regulation in breast cancer stem cells with different responses upon TGF-beta pathway activation. Total RNA from four breast cell lines grown as mammospheres treated with recombinant TGF-beta or a TGF-beta receptor I inhibitor was used in the analysis.
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Project description:RNA extracted at 240min. Samples are rRNA depleted. Expression measurement of Homo sapiens genes.
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