neuroblastoma/phosphatase

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Integrin-linked kinase regulates phosphatase and tensin homologue activity to promote tumorigenesis in neuroblastoma cells.

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BACKGROUND The phosphatidylinositol 3-kinase (PI3K), a critical intracellular pathway, is negatively regulated by phosphatase and tensin homologue (PTEN). Integrin-linked kinase (ILK) induces phosphorylation of Akt leading to an increase in cell survival. However, a potential interaction between ILK

Overexpression of tissue-nonspecific alkaline phosphatase increases the expression of neurogenic differentiation markers in the human SH-SY5Y neuroblastoma cell line.

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Patients suffering from the rare hereditary disease hypophosphatasia (HPP), which is based on mutations in the ALPL gene, tend to develop central nervous system (CNS) related issues like epileptic seizures and neuropsychiatric illnesses such as anxiety and depression, in addition to well-known

Dual-specificity phosphatase 26 is a novel p53 phosphatase and inhibits p53 tumor suppressor functions in human neuroblastoma.

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Chemoresistance is a major cause of treatment failure and poor outcome in neuroblastoma. In this study, we investigated the expression and function of dual-specificity phosphatase 26 (DUSP26), also known as mitogen-activated protein kinase phophatase-8, in human neuroblastoma. We found that DUSP26

Phosphatase inhibition in human neuroblastoma cells alters tau antigenicity and renders it incompetent to associate with exogenous microtubules.

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The abnormal cytoskeletal organization observed in Alzheimer's disease has been suggested to arise from hyperphosphorylation of tau and the resultant elimination of its ability to associate with microtubules. This possibility has been supported by a number of studies under cell-free conditions

The phosphatase inhibitor okadaic acid induces a phosphorylated paired helical filament tau epitope in human LA-N-5 neuroblastoma cells.

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Recently, a mitogen activated protein kinase has been implicated in the generation of a phosphorylated paired helical filament (PHF) epitope recognized by the monoclonal antibody AT8. This epitope consists of phosphorylated serines 199 and/or 202 of the human microtubule associated protein tau.

Enhanced expression of alkaline phosphatase in hybrids between neuroblastoma and embryonal carcinoma.

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Three independent hybrid cell lines were isolated from the fusion of clonal lines of embryonal carcinoma and neuroblastoma. A series of subclones was subsequently derived from the original hybrid clones. In early hybrid generations all hybrid lines showed enhancement of alkaline phosphatase

Interactions between glycogen synthase kinase 3beta, protein kinase B, and protein phosphatase 2A in tau phosphorylation in mouse N2a neuroblastoma cells.

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In this study, we investigated how tau phosphorylation is regulated by protein kinase glycogen synthase kinase 3beta (GSK3 beta), protein kinase B (PKB), and protein phosphatase 2A (PP2A) in mouse N2a neuroblastoma cells. Results showed that GSK3 beta overexpression significantly increased PKB

Membrane depolarization induces the undulating phosphorylation/dephosphorylation of glycogen synthase kinase 3beta, and this dephosphorylation involves protein phosphatases 2A and 2B in SH-SY5Y human neuroblastoma cells.

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Changes in plasma membrane electrical potential evoke signals that regulate the expressions of various genes in the nervous system. However, the role of glycogen synthase kinase 3beta (GSK-3beta) in this process has not been elucidated. Thus, this study was performed to examine whether membrane

Expression of calmodulin-dependent phosphodiesterase, calmodulin-dependent protein phosphatase, and other calmodulin-binding proteins in human SMS-KCNR neuroblastoma cells.

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Calmodulin (CaM)-dependent enzymes, such as CaM-dependent phosphodiesterase (CaM-PDE), CaM-dependent protein phosphatase (CN), and CaM-dependent protein kinase II (CaM kinase II), are found in high concentrations in differentiated mammalian neurons. In order to determine whether neuroblastoma cells

Protein phosphatase in neuroblastoma cells: [3H]cantharidin binding site in relation to cytotoxicity.

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Protein phosphatase 2A (PP2A) plays a central role in essential phosphorylation-dependent signal transduction pathways. It is also a principal target for many natural toxicants (cantharidin, microcystins, diarrhetic shellfish poisons) and a synthetic herbicide (endothall). This study develops a

Modification of opioid receptor activity by acid phosphatase in neuroblastoma x glioma NG108-15 hybrid cells.

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Opioid receptor activity in neuroblastoma x glioma NG108-15 hybrid cell membranes was attenuated by acid phosphatase purified by high performance liquid chromatography and devoid of protease activity. Treatment of membranes with this phosphatase decreased opioid inhibition of adenylate cyclase and

Involvement of a ceramide activated protein phosphatase in the differentiation of neuroblastoma Neuro2a cells.

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The possible involvement of protein phosphatase in ceramide-mediated neural cell differentiation was investigated. Neuroblastoma Neuro2a cell differentiation induced by retinoic acid, or conditions causing an increase in cellular ceramide, was significantly inhibited by the serine/threonine

NMDA and dopamine D2L receptor interaction in human neuroblastoma SH-SY5Y cells involves tyrosine kinase and phosphatase.

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Blockade of N-methyl-D-aspartate (NMDA) receptors by the specific antagonists dizocilpine and (+/-)-3-(2-carboxypiperazin-4-yl)-propyl-1-phosphonic acid on human neuroblastoma SH-SY5Y cells expressing human D21 receptors resulted in a significant increase in the density of D2L receptors. In order to

LncRNA cancer susceptibility candidate (CASC7) upregulates phosphatase and tensin homolog by downregulating miR-10a to inhibit neuroblastoma cell proliferation.

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Long non-coding (lncRNA) cancer susceptibility candidate (CASC7) plays a tumor-suppressive role in several malignancies. In this study, the role of CASC7 in neuroblastoma was investigated for the first time. We observed the downregulation of CASC7 in neuroblastoma tissues compared to non-cancer

Regulation of protein phosphatase 2A methylation by LCMT1 and PME-1 plays a critical role in differentiation of neuroblastoma cells.

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Neuritic alterations are a major feature of many neurodegenerative disorders. Methylation of protein phosphatase 2A (PP2A) catalytic C subunit by the leucine carboxyl methyltransferase (LCMT1), and demethylation by the protein phosphatase methylesterase 1, is a critical PP2A regulatory mechanism. It

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