Neurotrophin and Neurotrophin Receptor Involvement in Human Neuroblastoma
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Differences in early and late responses between neurotrophin-stimulated trkA- and trkC-transfected SH-SY5Y neuroblastoma cells.
Despite their sympathetic neuroblast origin, highly malignant neuroblastoma tumors and derived cell lines have no or low expression of the neurotrophin receptor genes, trkA and trkC. Expression of exogenous trkA in neuroblastoma cells restores their ability to differentiate in response to nerve growth factor (NGF). Here we show that stable expression of trkC in SH-SY5Y neuroblastoma cells resul...
متن کاملNeurotrophin-3 production promotes human neuroblastoma cell survival by inhibiting TrkC-induced apoptosis.
Tropomyosin-related kinase receptor C (TrkC) is a neurotrophin receptor with tyrosine kinase activity that was expected to be oncogenic. However, it has several characteristics of a tumor suppressor: its expression in tumors has often been associated with good prognosis; and it was recently demonstrated to be a dependence receptor, transducing different positive signals in the presence of ligan...
متن کاملThe low-affinity neurotrophin receptor, p75, is upregulated in ganglioneuroblastoma/ganglioneuroma and reduces tumorigenicity of neuroblastoma cells in vivo.
Neuroblastoma, the most common extracranial tumor of childhood, is derived from neural crest progenitor cells that fail to differentiate along their predefined route to sympathetic neurons or sympatho-adrenergic adrenal cells. Although expression of the high-affinity neurotrophin receptors, TrkA and TrkB, is of major importance in neuroblastoma, the significance of the expression of the low-aff...
متن کاملThe transcription factor Runx3 represses the neurotrophin receptor TrkB during lineage commitment of dorsal root ganglion neurons.
Runx3, a Runt domain transcription factor, determines neurotrophin receptor phenotype in dorsal root ganglion (DRG) neurons. Molecular mechanisms by which Runx3 controls distinct neurotrophin receptors are largely unknown. Here, we show that RUNX3 abolished mRNA induction of TRKB expression, and concomitantly altered the neurotrophin response in a differentiating neuroblastoma cell line. In con...
متن کاملاثر نوروپروتکتیوی استیل ال‌کارنیتین، پس از ضایعه فشار مکانیکی طناب نخاعی موش صحرایی بالغ
Background and Objective: Despite current efforts for treating the spinal cord injury (SCI), cell therapy and pharmacological methods have a great curing potential in this field. In this study, application of acetyl L carnitine as one of the possible pharmacologic approaches in SCI treatment was investigated. The effect of this material in adult rats suffering from spinal cord compression was e...
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تاریخ انتشار 2017