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Neuroblastoma

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https://www.readbyqxmd.com/read/27926996/small-molecule-modulator-of-sigma-2-receptor-is-neuroprotective-and-reduces-cognitive-deficits-and-neuro-inflammation-in-experimental-models-of-alzheimer-s-disease
#1
Bitna Yi, James J Sahn, Pooneh Memar Ardestani, Andrew K Evans, Luisa Scott, Jessica Z Chan, Sangeetha Iyer, Ashley Crisp, Gabriella Zuniga, Jonathan Pierce-Shimomura, Stephen F Martin, Mehrdad Shamloo
Accumulating evidence suggests that modulating the sigma 2 receptor (Sig2R) can provide beneficial effects for neurodegenerative diseases. Herein, we report the identification of a novel class of Sig2R binding ligands and their cellular and in vivo activity in experimental models of Alzheimer's disease (AD). We report that SAS-0132 and DKR-1051, selective ligands of Sig2R, modulate intracellular Ca(2+) levels in human SK-N-SH neuroblastoma cells. The Sig2R antagonists SAS-0132 and JVW-1009 are neuroprotective in a C...
December 7, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27924056/correction-metformin-impairs-rho-gtpase-signaling-to-induce-apoptosis-in-neuroblastoma-cells-and-inhibits-growth-of-tumors-in-the-xenograft-mouse-model-of-neuroblastoma
#2
Ambrish Kumar, Nadia Al-Sammarraie, Donald J DiPette, Ugra S Singh
No abstract text is available yet for this article.
July 5, 2016: Oncotarget
https://www.readbyqxmd.com/read/27923830/a-myc-activity-signature-predicts-poor-clinical-outcomes-in-myc-associated-cancers
#3
MoonSun Jung, Amanda J Russell, Bing Liu, Joshy George, Pei Yan Liu, Tao Liu, Anna DeFazio, David D L Bowtell, Andre Oberthuer, Wendy B London, Jamie I Fletcher, Michelle Haber, Murray D Norris, Michelle J Henderson
Myc transcriptional activity is frequently deregulated in human cancers, but a Myc-driven gene signature with prognostic ability across multiple tumor types remains lacking. Here we selected 18 Myc-regulated genes from published studies of Myc family targets in epithelial ovarian cancer (EOC) and neuroblastoma. A Myc family activity score derived from the 18 genes was correlated to MYC/MYCN/MYCL1 expression in a panel of 35 cancer cell lines. The prognostic ability of this signature was evaluated in neuroblastoma, medulloblastoma, diffuse large B-cell lymphoma (DLBCL), and EOC microarray gene expression datasets using Kaplan-Meier and multivariate Cox-regression analyses, and was further validated in 42 primary neuroblastomas using qPCR...
December 6, 2016: Cancer Research
https://www.readbyqxmd.com/read/27923201/synthesis-and-biological-evaluation-of-a-new-class-of-benzothiazines-as-neuroprotective-agents
#4
Alessandra Mancini, Alessia Chelini, Angela Di Capua, Loretta Castelli, Simone Brogi, Marco Paolino, Germano Giuliani, Andrea Cappelli, Maria Frosini, Lorenzo Ricci, Erminia Leonelli, Gianluca Giorgi, Antonio Giordani, Jacopo Magistretti, Maurizio Anzini
Neurodegenerative diseases are disorders related to the degeneration of central neurons that gradually lead to various, severe alterations of cognitive and/or motor functions. Currently, for no such diseases does any pharmacological treatment exist able to arrest its progression. Riluzole (1) is a small molecule able to interfere with multiple cellular and molecular mechanisms of neurodegeneration, and is the only approved treatment of amyotrophic lateral sclerosis (ALS), the progression of which proved to significantly slow, thus increasing somewhat average survival...
November 27, 2016: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27922827/gold-nanoparticles-as-scaffolds-for-poor-water-soluble-and-difficult-to-vehiculate-antiparkinson-codrugs
#5
A Di Crescenzo, I Cacciatore, M Petrini, M D'Alessandro, N Petragnani, P Del Boccio, P Di Profio, S Boncompagni, G Spoto, H Turkez, P Ballerini, A Di Stefano, A Fontana
We report the facile and non-covalent preparation of gold nanoparticles (AuNPs) stabilized by an antiparkinson codrug based on lipoic acid (LA). The obtained AuNPs appear stable in both dimethyl sulfoxide and fetal bovine serum and able to load an amount of codrug double the weight of gold. These NPs were demonstrated to be safe and biocompatible towards primary human blood cells and human neuroblastoma cells, one of the most widely used cellular models to study dopaminergic neural cells, therefore are ideal drug carriers for difficult to solubilize molecules...
December 6, 2016: Nanotechnology
https://www.readbyqxmd.com/read/27922668/dual-inhibition-using-cabozantinib-overcomes-hgf-met-signaling-mediated-resistance-to-pan-vegfr-inhibition-in-orthotopic-and-metastatic-neuroblastoma-tumors
#6
Estelle Daudigeos-Dubus, Ludivine Le Dret, Olivia Bawa, Paule Opolon, Albane Vievard, Irène Villa, Jacques Bosq, Gilles Vassal, Birgit Geoerger
MET is expressed on neuroblastoma cells and may trigger tumor growth, neoangiogenesis and metastasis. MET upregulation further represents an escape mechanism to various anticancer treatments including VEGF signaling inhibitors. We developed in vitro a resistance model to pan-VEGFR inhibition and explored the simultaneous inhibition of VEGFR and MET in neuroblastoma models in vitro and in vivo using cabozantinib, an inhibitor of the tyrosine kinases including VEGFR2, MET, AXL and RET. Resistance in IGR-N91-Luc neuroblastoma cells under continuous in vitro exposure pressure to VEGFR1-3 inhibition using axitinib was associated with HGF and p-ERK overexpression...
December 6, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27922241/an-unusual-case-of-neuroblastoma-a-17-year-old-adolescent-presented-with-bilateral-diffuse-lung-metastasis-at-initial-diagnosis
#7
Çağlar Ödek, Tanıl Kendirli, Esra Pekpak, Ayhan Yaman, Başak Adaklı-Aksoy, Handan Dinçaslan, Nurdan Taçyıldız, Emel Ünal, Erdal İnce, Gülsan Yavuz
Neuroblastoma (NB) is the most frequently diagnosed neoplasm during infancy and its incidence declines within the first 3-5 years of life. It can be rarely diagnosed in adolescents and young adults. Adolescents have advanced stage of disease, higher frequency of uncommon metastatic sites such as lungs, and worse outcomes. Herein, we describe an unusual case of NB in a 17-year-old adolescent presented with lung metastasis at diagnosis. The patient was diagnosed with stage IV NB. Thorax high-resolution computed tomography (HRCT) scan revealed irregular septal thickening with ground glass opacity consistent with pulmonary parenchymal metastases...
2016: Turkish Journal of Pediatrics
https://www.readbyqxmd.com/read/27921386/cytotoxicity-of-a-series-of-norcantharidin-inspired-tetrahydroepoxyisoindole-carboxamides
#8
Christopher Peter Gordon, Lawson K Spare, Pasquale Falsetta, Jayne Gilbert, David G Harman, Mark A Baker, Feng Li, Adam McCluskey, Jack K Clegg, Jennette A Sakoff, Janice R Aldrich-Wright
A series of 28 norcantharidin (NorC) inspired analogues were accessed via a robust two-step Ugi intramolecular Diels-Alder (IMDA) sequence. Four analogues displayed equipotent whole cell cytotoxicity to NorC and cisplatin against a number of cancer cell lines and a normal breast cell line (MCF10A). Notably (3S,3aS,6R)-2-benzyl-7-methyl-N-(naphthalen-2-yl)-1-oxo-1,2,3,6-tetrahydro-3a,6-epoxyisoindole-3-carboxamide (trans-27) displayed superior whole cell activity against breast (MCF-7, GI50 = 2.9 µM) and colon (HT29, GI50 = 6...
December 6, 2016: ChemMedChem
https://www.readbyqxmd.com/read/27920558/monitoring-the-effects-of-doxorubicin-on-3d-spheroid-tumor-cells-in-real-time
#9
NamHuk Baek, Ok Won Seo, MinSung Kim, John Hulme, Seong Soo A An
Recently, increasing numbers of cell culture experiments with 3D spheroids presented better correlating results in vivo than traditional 2D cell culture systems. 3D spheroids could offer a simple and highly reproducible model that would exhibit many characteristics of natural tissue, such as the production of extracellular matrix. In this paper numerous cell lines were screened and selected depending on their ability to form and maintain a spherical shape. The effects of increasing concentrations of doxorubicin (DXR) on the integrity and viability of the selected spheroids were then measured at regular intervals and in real-time...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27919448/fx11-inhibits-aerobic-glycolysis-and-growth-of-neuroblastoma-cells
#10
Eric J Rellinger, Brian T Craig, Alexandra L Alvarez, Haley L Dusek, Kwang W Kim, Jingbo Qiao, Dai H Chung
BACKGROUND: The MYC family of proteins promotes neuroblastoma tumorigenesis at least in part through the induction of aerobic glycolysis by promoting the transcription of key glycolytic enzymes, such as LDHA. FX11 is a selective inhibitor of LDHA that has demonstrated preclinical efficacy in adult cancers. Herein, we hypothesized that FX11 would inhibit aerobic glycolysis and block growth of neuroblastoma cells. METHODS: We surveyed 3 MYCN-single copy and 5 MYCN-amplified neuroblastoma cell lines to correlate C-MYC/N-MYC protein levels with LDHA expression...
December 2, 2016: Surgery
https://www.readbyqxmd.com/read/27919026/hindered-cytoplasmic-diffusion-of-inositol-trisphosphate-restricts-its-cellular-range-of-action
#11
George D Dickinson, Kyle L Ellefsen, Silvina Ponce Dawson, John E Pearson, Ian Parker
The range of action of intracellular messengers is determined by their rates of diffusion and degradation. Previous measurements in oocyte cytoplasmic extracts indicated that the Ca(2+)-liberating second messenger inositol trisphosphate (IP3) diffuses with a coefficient (~280 μm(2) s(-1)) similar to that in water, corresponding to a range of action of ~25 μm. Consequently, IP3 is generally considered a "global" cellular messenger. We reexamined this issue by measuring local IP3-evoked Ca(2+) puffs to monitor IP3 diffusing from spot photorelease in neuroblastoma cells...
November 8, 2016: Science Signaling
https://www.readbyqxmd.com/read/27917732/olfactory-neuroblastoma-14-year-experience-at-an-australian-tertiary-centre-and-the-role-for-longer-term-surveillance
#12
C Schmidt, N Potter, S Porceddu, B Panizza
BACKGROUND: Olfactory neuroblastoma is a rare sinonasal malignancy, with poorly defined treatment protocols. Management at a tertiary centre was retrospectively evaluated to inform future treatment and follow up. METHODS: Cases treated with curative intent (2000-2014) were included. Data were collected, and overall and disease-free survival rates were calculated. RESULTS: Eleven cases were identified, with a median follow up of 87 months. One patient was Kadish stage A, one was stage B, eight were stage C and one was stage D...
December 5, 2016: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/27916876/coriandrum-sativum-and-lavandula-angustifolia-essential-oils-chemical-composition-and-activity-on-central-nervous-system
#13
Lucia Caputo, Lucéia Fátima Souza, Susanna Alloisio, Laura Cornara, Vincenzo De Feo
The aims of this study are to determine the chemical composition of Lavandula angustifolia Mill. and Coriandrum sativum L. essential oils, to evaluate their cytotoxic effects in SH-SY5Y human neuroblastoma cells, to investigate whether an alteration of adenylate cyclase 1 (ADCY1) and of extracellular signal-regulated kinase (ERK) expression can take part in the molecular mechanisms of the essential oils, and to study their possible neuronal electrophysiological effects. The essential oils were obtained by hydrodistillation, and studied by GC and GC-MS...
November 30, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27916824/graphene-oxide-nanoribbons-induce-autophagic-vacuoles-in-neuroblastoma-cell-lines
#14
Emanuela Mari, Stefania Mardente, Emanuela Morgante, Marco Tafani, Emanuela Lococo, Flavia Fico, Federica Valentini, Alessandra Zicari
Since graphene nanoparticles are attracting increasing interest in relation to medical applications, it is important to understand their potential effects on humans. In the present study, we prepared graphene oxide (GO) nanoribbons by oxidative unzipping of single-wall carbon nanotubes (SWCNTs) and analyzed their toxicity in two human neuroblastoma cell lines. Neuroblastoma is the most common solid neoplasia in children. The hallmark of these tumors is the high number of different clinical variables, ranging from highly metastatic, rapid progression and resistance to therapy to spontaneous regression or change into benign ganglioneuromas...
November 29, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27914796/design-and-synthesis-of-new-piperidone-grafted-acetylcholinesterase-inhibitors
#15
Alireza Basiri, Michelle Xiao, Alec McCarthy, Debashis Dutta, Siddappa N Byrareddy, Martin Conda-Sheridan
Alzheimer's disease (AD) is a neurodegenerative disorder affecting 35million people worldwide. A common strategy to improve the well-being of AD patients consists on the inhibition of acetylcholinesterase with the concomitant increase of the neurotransmitter acetylcholine at cholinergic synapses. Two series of unreported N-benzylpiperidines 5(a-h) and thiazolopyrimidines 9(a-q) molecules were synthesized and evaluated in vitro for their acetylcholinesterase (AChE) inhibitory activities. Among the newly synthesized compounds, 5h, 9h, 9j, and 9p displayed higher AChE enzyme inhibitory activities than the standard drug, galantamine, with IC50 values of 0...
November 24, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27913844/global-dna-methylation-profiling-of-manganese-exposed-human-neuroblastoma-sh-sy5y-cells-reveals-epigenetic-alterations-in-parkinson-s-disease-associated-genes
#16
Prashant Tarale, Saravanadevi Sivanesan, Atul P Daiwile, Reinhard Stöger, Amit Bafana, Pravin K Naoghare, Devendra Parmar, Tapan Chakrabarti, Krishnamurthi Kannan
Manganese (Mn) is an essential trace element required for optimal functioning of cellular biochemical pathways in the central nervous system. Elevated exposure to Mn through environmental and occupational exposure can cause neurotoxic effects resulting in manganism, a condition with clinical symptoms identical to idiopathic Parkinson's disease. Epigenetics is now recognized as a biological mechanism involved in the etiology of various diseases. Here, we investigated the role of DNA methylation alterations induced by chronic Mn (100 µM) exposure in human neuroblastoma (SH-SY5Y) cells in relevance to Parkinson's disease...
December 2, 2016: Archives of Toxicology
https://www.readbyqxmd.com/read/27913570/revisiting-the-human-polypeptide-galnac-t1-and-t13-paralogs
#17
María Florencia Festari, Felipe Trajtenberg, Nora Berois, Sergio Pantano, Leslie Revoredo, Yun Kong, Patricia Solari-Saquieres, Yoshiki Narimatsu, Teresa Freire, Sylvie Bay, Carlos Robello, Jean Bénard, Thomas A Gerken, Henrik Clausen, Eduardo Osinaga
Polypeptide GalNAc-transferases (GalNAc-Ts) constitute a family of 20 human glycosyltransferases (comprising 9 subfamilies), which initiate mucin-type O-glycosylation. The O-glycoproteome is thought to be differentially regulated via the different substrate specificities and expression patterns of each GalNAc-T isoforms. Here, we present a comprehensive in vitro analysis of the peptide substrate specificity of GalNAc-T13, showing that it essentially overlaps with the ubiquitous expressed GalNAc-T1 isoform found in the same subfamily as T13...
November 22, 2016: Glycobiology
https://www.readbyqxmd.com/read/27913161/novel-brain-expressed-rna-identified-at-the-mir137-schizophrenia-associated-locus
#18
Olympia Gianfrancesco, Alix Warburton, David A Collier, Vivien J Bubb, John P Quinn
Genome-wide association studies (GWAS) have identified a locus on chromosome 1p21.3 to be highly associated with schizophrenia. A microRNA, MIR137, within this locus has been proposed as the gene causally associated with schizophrenia, due to its known role as a regulator of neuronal development and function. However, the involvement of other genes within this region, including DPYD (dihydropyrimidine dehydrogenase), is also plausible. In this communication, we describe a previously uncharacterised, brain-expressed RNA, EU358092, within the schizophrenia-associated region at 1p21...
November 29, 2016: Schizophrenia Research
https://www.readbyqxmd.com/read/27908537/the-unusual-association-between-neuroblastoma-and-gaucher-disease-case-report-and-review-of-the-literature
#19
Annalisa Madeo, Alberto Garaventa, Angela Rita Sementa, Chiara Suffia, Maja Di Rocco
Gaucher disease (GD) patients have an increased risk of cancer, in particular of hematological origin, while the association between GD and Neuroblastoma (NBL) has never been described. Here we report the case of an adolescent diagnosed with NBL, also presenting splenomegaly and persistent thrombocytopenia. The association with GD, suggested by the histological findings on bone marrow biopsy, was confirmed by enzymatic and genetic tests. The possible pathogenetic mechanisms are briefly reviewed. The evidence of this new association supports the necessity of further studies on GD comorbidities and the need of systematic data collection and analysis, potentially through an international registry...
November 23, 2016: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/27908423/copper-brain-protein-protection-against-free-radical-induced-neuronal-death-survival-ratio-in-sh-sy5y-neuroblastoma-cell-cultures
#20
Roger Deloncle, Bernard Fauconneau, Olivier Guillard, José Delaval, Gérard Lesage, Alain Pineau
In Creutzfeldt Jakob, Alzheimer and Parkinson diseases, copper metalloproteins such as prion, amyloid protein precursor and α-synuclein are able to protect against free radicals by reduction from cupric Cu(+2) to cupreous Cu(+). In these pathologies, a regional copper (Cu) brain decrease correlated with an iron, zinc or manganese (Mn) increase has previously been observed, leading to local neuronal death and abnormal deposition of these metalloproteins in β-sheet structures. In this study we demonstrate the protective effect of Cu metalloproteins against deleterious free-radical effects...
January 2017: Journal of Trace Elements in Medicine and Biology
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