medulloblastoma/tyrosine

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Effects of epigenetic modificators in combination with small molecule inhibitors of receptor tyrosine kinases on medulloblastoma growth.

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Epigenetic alterations and aberrant expression of genes controlling epigenetic mechanisms have been identified in several cancers, including medulloblastoma, the most common brain tumor in children. Here we show that combining drugs that inhibit two of the most important epigenetic factors, gene

Inhibition of the MET Receptor Tyrosine Kinase as a Novel Therapeutic Strategy in Medulloblastoma.

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Medulloblastoma is the most common pediatric posterior fossa malignancy, with a 5-year overall survival of only 60% and many survivors experiencing treatment-related morbidity secondary to current therapeutic regimens. With an improved understanding of the molecular basis for this disease, the

Cell scattering of SK-N-MC neuroepithelioma cells in response to Ret and FGF receptor tyrosine kinase activation is correlated with sustained ERK2 activation.

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The c-ret proto-oncogene encodes a receptor tyrosine kinase which plays an important role in kidney and enteric nervous system development. Germline mutations in c-ret are responsible for the dominantly inherited cancer syndromes, multiple endocrine neoplasia types 2A and 2B and familial medullary

A positive feedback loop between Gli1 and tyrosine kinase Hck amplifies shh signaling activities in medulloblastoma.

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Sonic hedgehog (Shh) signaling is critical during normal development, and the abnormal activation of the Shh pathway is involved in many human cancers. As a target gene of the Shh pathway and as a transcription activator downstream of Shh signaling, Gli1 autoregulates and increases Shh signaling

Pediatric brain tumors express multiple receptor tyrosine kinases including novel cell adhesion kinases.

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We have used the polymerase chain reaction to clone and characterize growth factor receptor tyrosine kinases (RTKs) expressed in 3 pathologically distinct pediatric brain tumors, an anaplastic ependymoma, a glioblastoma multiforme and a primitive neuroectodermal tumor (PNET). These neoplasms are

Targeting VEGF-VEGFR Pathway by Sunitinib in Peripheral Primitive Neuroectodermal Tumor, Paraganglioma and Epithelioid Hemangioendothelioma: Three Case Reports.

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Sunitinib malate (Sutent(TM); Pfizer Inc., New York, N.Y., USA) is a small molecule kinase inhibitor with activity against a number of tyrosine kinase receptors, including vascular endothelial growth factor receptors, stem-cell factor receptor, and platelet-derived growth factor receptors alpha and

Nerve growth factor activation of the TrkA receptor induces cell death, by macropinocytosis, in medulloblastoma Daoy cells.

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Ectopic expression of the TrkA receptor tyrosine kinase in tumors of the nervous system can mediate nerve growth factor (NGF)-dependent cell death by apoptosis and /or autophagy. Herein, we demonstrate that TrkA can also induce cell death in medulloblastoma Daoy cells by a caspase-independent

[Diagnostic utility of tyrosine hydroxylase in peripheral neuroblastic tumors].

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Objective: To investigation the diagnostic utility of tyrosine hydroxylase (TH) immunohistochemically as a marker of peripheral neuroblastic tumors(pNT). Methods: The study included 1 024 cases, 643 primary and metastatic pNT cases, 381 non-pNT cases, including small round cell tumors such as

Targeting Upstream Kinases of STAT3 in Human Medulloblastoma cells.

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BACKGROUND Medulloblastoma is the most common malignant brain tumor in children. Despite improvement in overall survival rate, it still lacks an effective targeted treatment strategy. The Janus family of cytoplasmic tyrosine kinases (JAKs) and Src kinases, upstream protein kinases of signal

Erbb4 Is Required for Cerebellar Developmentand Malignant Phenotype of Medulloblastoma.

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Medulloblastoma is the most common and malignant pediatric brain tumor in childhood. It originates from dysregulation of cerebellar development, due to an excessive proliferation of cerebellar granule neuron precursor cells (CGNPs). The underlying molecular mechanisms, except for the role of SHH and

Estrogen Receptor-β Up-Regulates IGF1R Expression and Activity to Inhibit Apoptosis and Increase Growth of Medulloblastoma.

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Medulloblastoma (Med) is the most common malignant brain tumor in children. The role of ESR2 [estrogen receptor (ER)-β] in promoting Med growth was comprehensively examined in three in vivo models and human cell lines. In a novel Med ERβ-null knockout model developed by crossing Esr2(-/-) mice with

Growth-inhibitory effect of neurotrophin-3-secreting adipose tissue-derived mesenchymal stem cells on the D283-MED human medulloblastoma cell line.

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Medulloblastoma (MBL), the most common malignant pediatric brain tumor, is incurable in about one-third of patients and can lead to long-term disabilities despite current multimodal treatments. The purpose of this study was to demonstrate in vitro biological effects of neurotrophins-3 (NT-3) on MBL

Neurotrophin receptors and heparanase: a functional axis in human medulloblastoma invasion.

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Medulloblastoma (MB) is the most common malignant brain tumor of childhood. Although modern therapy has produced five-year survival rates as high as 70% for some MB patients, this resulted in significant long-term treatment-related morbidity. The cellular mechanisms involved in metastatic spread of

Unravelling the Mechanism of TrkA-Induced Cell Death by Macropinocytosis in Medulloblastoma Daoy Cells.

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Macropinocytosis is a normal cellular process by which cells internalize extracellular fluids and nutrients from their environment and is one strategy that Ras-transformed pancreatic cancer cells use to increase uptake of amino acids to meet the needs of rapid growth. Paradoxically, in non-Ras

Nerve growth factor induces apoptosis in human medulloblastoma cell lines that express TrkA receptors.

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Neurotrophins act through their cognate receptors to promote the differentiation and/or survival of neuronal progenitor cells, immature neurons, and other cells. Here, we examined the effects of nerve growth factor (NGF) and its cognate receptor (Trk or TrkA) on the survival of a common childhood

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