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Monensin, an Antibiotic Isolated from Streptomyces Cinnamonensis, Regulates Human Neuroblastoma Cell Proliferation via the PI3K/AKT Signaling Pathway and Acts Synergistically with Rapamycin. Antibiotics (Basel) 2023; 12:antibiotics12030546. [PMID: 36978413 PMCID: PMC10044236 DOI: 10.3390/antibiotics12030546] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/03/2023] [Accepted: 03/07/2023] [Indexed: 03/11/2023] Open
Abstract
Neuroblastoma is the most common extracranial childhood tumor and accounts for approximately 15% of pediatric cancer-related deaths. Further studies are needed to identify potential therapeutic targets for neuroblastoma. Monensin is an ionophore antibiotic obtained from Streptomyces cinnamonensis with known antibacterial and antiparasitic effects. No study has reported the effects of monensin on SH-SY5Y neuroblastoma cells by targeting the PI3K/AKT signaling pathway. The aim of this study was to investigate the antiproliferative effects of monensin alone and in combination with rapamycin in human SH-SY5Y neuroblastoma cells mediated by the PI3K/AKT signaling pathway. The effects of single and combination applications of monensin and rapamycin on SH-SY5Y cell proliferation were investigated by XTT, and their effects on the PI3K/AKT signaling pathway by RT-PCR, immunohistochemistry, immunofluorescence, and Western blotting. The combined effects of monensin and rapamycin on SH-SY5Y proliferation were most potent at 72 h (combination index < 1). The combination of monensin and rapamycin caused a significant decrease in the expression of P21RAS, AKT, and MAPK1 genes. Single and combined administrations of monensin and rapamycin caused a significant decrease in PI3K/AKT expression. Our results showed for the first time that monensin exerts an antiproliferative effect by targeting the PI3K/AKT signaling pathway in neuroblastoma cells. It is suggested that monensin and its combination with rapamycin may be an effective therapeutic candidate for treating neuroblastoma.
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DeWire M, Lazow M, Campagne O, Leach J, Fuller C, Kumar SS, Stanek J, de Blank P, Hummel TR, Pillay-Smiley N, Salloum R, Stevenson CB, Baxter P, Gass D, Goldman S, Leary SES, Carle A, Mikael L, Crabtree D, Chaney B, Lane A, Drissi R, Stewart CF, Fouladi M. Phase I study of ribociclib and everolimus in children with newly diagnosed DIPG and high-grade glioma: A CONNECT pediatric neuro-oncology consortium report. Neurooncol Adv 2022; 4:vdac055. [PMID: 35611273 PMCID: PMC9122788 DOI: 10.1093/noajnl/vdac055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Background Genomic aberrations in the cell cycle and PI3K/Akt/mTOR pathways have been reported in diffuse intrinsic pontine glioma (DIPG) and high-grade glioma (HGG). Dual inhibition of CDK4/6 and mTOR has biologic rationale and minimal overlapping toxicities. This study determined the recommended phase 2 dose (RP2D) of ribociclib and everolimus following radiotherapy in children with DIPG and HGG. Methods Patients were enrolled according to a Rolling-6 design and received ribociclib and everolimus once daily for 21 and 28 days, respectively. All patients with HGG and biopsied DIPG were screened for retinoblastoma protein presence by immunohistochemistry. Pharmacokinetics were analyzed. Results Nineteen patients enrolled (median age: 8 years [range: 2-18]). Three patients enrolled at each dose level 1 and 2 without dose-limiting toxicities (DLT). Thirteen patients were enrolled at dose level 3, with one patient experiencing a DLT (grade 3 infection). One patient came off therapy before cycle 9 due to cardiac toxicity. The most common grade 3/4 toxicities were neutropenia (33%), leucopenia (17%), and lymphopenia (11%). Steady-state everolimus exposures in combination were 1.9 ± 0.9-fold higher than single-agent administration. Median overall survival for 15 patients with DIPG was 13.9 months; median event-free survival for four patients with HGG was 10.5 months. Two longer survivors had tumor molecular profiling identifying CDKN2A/B deletion and CDK4 overexpression. Conclusion The combination of ribociclib and everolimus following radiotherapy in children with newly diagnosed DIPG and HGG was well tolerated, with a RP2D of ribociclib 170 mg/m2 and everolimus 1.5 mg/m2. Results will inform a molecularly guided phase II study underway to evaluate efficacy.
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Affiliation(s)
- Mariko DeWire
- Cancer and Blood Diseases Institute, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine
| | - Margot Lazow
- Pediatric Neuro-Oncology Program, Nationwide Children’s Hospital
- The Ohio State University College of Medicine
| | - Olivia Campagne
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital
| | - James Leach
- Division of Radiology, Cincinnati Children’s Hospital Medical Center
| | - Christine Fuller
- Division of Pathology, Cincinnati Children’s Hospital Medical Center
- Department of Pathology, Upstate Medical University
| | | | - Joseph Stanek
- Pediatric Neuro-Oncology Program, Nationwide Children’s Hospital
- The Ohio State University College of Medicine
| | - Peter de Blank
- Cancer and Blood Diseases Institute, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine
| | - Trent R Hummel
- Cancer and Blood Diseases Institute, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine
| | - Natasha Pillay-Smiley
- Cancer and Blood Diseases Institute, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine
| | - Ralph Salloum
- Pediatric Neuro-Oncology Program, Nationwide Children’s Hospital
- The Ohio State University College of Medicine
| | | | | | - David Gass
- Cancer and Blood Disorders Department, Atrium Health Levine Children’s Hospital
| | - Stewart Goldman
- Phoenix Children’s Hospital, University of Arizona College of Medicine-Phoenix
| | - Sarah E S Leary
- Cancer and Blood Disorders Center, Seattle Children’s Hospital
| | - Adam Carle
- Anderson Center Health Systems Excellence, Cincinnati Children’s Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine
| | - Leonie Mikael
- Pediatric Neuro-Oncology Program, Nationwide Children’s Hospital
| | - Dorothy Crabtree
- Pediatric Neuro-Oncology Program, Nationwide Children’s Hospital
| | - Brooklyn Chaney
- Pediatric Neuro-Oncology Program, Nationwide Children’s Hospital
| | - Adam Lane
- Division of Biostatistics, Cincinnati Children’s Hospital Medical Center
| | - Rachid Drissi
- The Ohio State University College of Medicine
- Center for Childhood Cancer & Blood Disorders, Nationwide Children’s Hospital
| | - Clinton F Stewart
- Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital
| | - Maryam Fouladi
- Pediatric Neuro-Oncology Program, Nationwide Children’s Hospital
- The Ohio State University College of Medicine
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3
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DeWire MD, Fuller C, Campagne O, Lin T, Pan H, Young Poussaint T, Baxter PA, Hwang EI, Bukowinski A, Dorris K, Hoffman L, Waanders AJ, Karajannis MA, Stewart CF, Onar-Thomas A, Fouladi M, Dunkel IJ. A Phase I and Surgical Study of Ribociclib and Everolimus in Children with Recurrent or Refractory Malignant Brain Tumors: A Pediatric Brain Tumor Consortium Study. Clin Cancer Res 2021; 27:2442-2451. [PMID: 33547201 PMCID: PMC8132306 DOI: 10.1158/1078-0432.ccr-20-4078] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/16/2020] [Accepted: 02/01/2021] [Indexed: 12/15/2022]
Abstract
PURPOSE Genomic aberrations in cell cycle and PI3K pathways are commonly observed in pediatric brain tumors. This study determined the MTD/recommended phase II dose (RP2D) of ribociclib and everolimus and characterized single-agent ribociclib concentrations in plasma and tumor in children undergoing resection. PATIENTS AND METHODS Patients were enrolled in the phase I study according to a rolling 6 design and received ribociclib and everolimus daily for 21 and 28 days, respectively. Surgical patients received ribociclib at the pediatric RP2D (350 mg/m2) for 7-10 days preoperatively followed by enrollment on the phase I study. Pharmacokinetics were analyzed for both cohorts. RESULTS Sixteen patients were enrolled on the phase I study (median age, 10.3 years; range, 3.9-20.4) and 6 patients in the surgical cohort (median age, 11.4 years; range: 7.2-17.1). Thirteen patients were enrolled at dose level 1 without dose-limiting toxicities (DLT). Two of the 3 patients at dose level 2 experienced DLTs (grade 3 hypertension and grade 4 alanine aminotransferase). The most common grade 3/4 toxicities were lymphopenia, neutropenia, and leukopenia. The RP2D of ribociclib and everolimus was 120 and 1.2 mg/m2 for 21 and 28 days, respectively. Steady-state everolimus exposures with ribociclib were 2.5-fold higher than everolimus administered alone. Ribociclib plasma, tumor concentrations, and cerebrospinal fluid (CSF) samples were collected. The mean tumor-to-plasma ratio of ribociclib was 19.8 (range, 2.22-53.4). CONCLUSIONS Ribociclib and everolimus were well-tolerated and demonstrated pharmacokinetic properties similar to those in adults. Potential therapeutic ribociclib concentrations could be achieved in CSF and tumor tissue, although interpatient variability was observed.
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Affiliation(s)
- Mariko D DeWire
- Department of Pediatrics College of Medicine, Cincinnati Children's Hospital Medical Center, Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, Ohio
| | - Christine Fuller
- Division of Pathology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
- Department of Pathology, Upstate Medical University, Syracuse, New York
| | - Olivia Campagne
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Tong Lin
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Haitao Pan
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, Tennessee
| | | | - Patricia A Baxter
- Texas Children's Cancer Center, Baylor College of Medicine, Houston, Texas
| | - Eugene I Hwang
- Division of Oncology, Children's National Medical Center, Washington, DC
| | - Andrew Bukowinski
- Division of Oncology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania
| | - Kathleen Dorris
- Division of Oncology, Denver Children's Hospital, Denver, Colorado
| | - Lindsey Hoffman
- Division of Oncology, Phoenix Children's Hospital, Phoenix, Arizona
| | - Angela J Waanders
- Division of Hematology/Oncology, Ann & Robert H Lurie Children's Hospital, Chicago, Illinois
| | - Matthias A Karajannis
- Pediatric Neuro-Oncology Service, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Clinton F Stewart
- Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Arzu Onar-Thomas
- Department of Biostatistics, St. Jude Children's Research Hospital, Memphis, Tennessee
| | - Maryam Fouladi
- Department of Pediatrics College of Medicine, Cincinnati Children's Hospital Medical Center, Cancer and Blood Diseases Institute, University of Cincinnati, Cincinnati, Ohio
- Hematology/Oncology & BMT, Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, Ohio
| | - Ira J Dunkel
- Pediatric Neuro-Oncology Service, Memorial Sloan Kettering Cancer Center, New York, New York
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Exosomal microRNAs from Longitudinal Liquid Biopsies for the Prediction of Response to Induction Chemotherapy in High-Risk Neuroblastoma Patients: A Proof of Concept SIOPEN Study. Cancers (Basel) 2019; 11:cancers11101476. [PMID: 31575060 PMCID: PMC6826693 DOI: 10.3390/cancers11101476] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/10/2019] [Accepted: 09/26/2019] [Indexed: 02/06/2023] Open
Abstract
Despite intensive treatment, 50% of children with high-risk neuroblastoma (HR-NB) succumb to their disease. Progression through current trials evaluating the efficacy of new treatments for children with HR disease usually depends on an inadequate response to induction chemotherapy, assessed using imaging modalities. In this study, we sought to identify circulating biomarkers that might be detected in a simple blood sample to predict patient response to induction chemotherapy. Since exosomes released by tumor cells can drive tumor growth and chemoresistance, we tested the hypothesis that exosomal microRNA (exo-miRNAs) in blood might predict response to induction chemotherapy. The exo-miRNAs expression profile in plasma samples collected from children treated in HR-NBL-1/SIOPEN before and after induction chemotherapy was compared to identify a three exo-miRs signature that could discriminate between poor and good responders. Exo-miRNAs expression also provided a chemoresistance index predicting the good or poor prognosis of HR-NB patients.
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Migita K, Matsumoto T, Terada K, Ono K, Hara S. Effects of geldanamycin on neurite outgrowth-related proteins and kinases in nerve growth factor-differentiated pheochromocytoma 12 cells. J Pharmacol Sci 2019; 140:255-262. [PMID: 31402210 DOI: 10.1016/j.jphs.2019.07.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/19/2019] [Accepted: 07/23/2019] [Indexed: 01/14/2023] Open
Abstract
Heat shock protein 90 (HSP90) antagonists are currently being evaluated as potential anticancer drugs. However, adverse effects related to these drugs, such as fatigue and pain, suggest that they affect neurons. Therefore, to understand the influence of HSP90 inhibitors on neurons, we investigated the effects of geldanamycin, an HSP90 antagonist, on nerve growth factor (NGF)-differentiated pheochromocytoma 12 (PC12) cells, particularly, on the expression and phosphorylation of proteins and kinases in the NGF pathway. Geldanamycin significantly inhibited NGF-induced neurite outgrowth and phosphorylation of Akt and extracellular signal-related kinase 1/2 in PC12 cells. Furthermore, geldanamycin inhibited the phosphorylation of collapsin response mediator protein 2 and the expression of cyclin-dependent kinase 5 in the presence of NGF, but did not significantly affect the expression of glycogen synthase kinase 3β. These results suggest that geldanamycin influences microtubule-binding proteins and kinases relating to neurite outgrowth, thereby inducing neuronal impairment.
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Affiliation(s)
- Keisuke Migita
- Department of Drug Informatics and Translational Research, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan.
| | - Taichi Matsumoto
- Department of Drug Informatics and Translational Research, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
| | - Kazuki Terada
- Laboratory of Drug Design and Drug Delivery, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka 814-0180, Japan
| | - Kazuhiko Ono
- Department of Drug Informatics and Translational Research, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
| | - Shuji Hara
- Department of Drug Informatics and Translational Research, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
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Dual Effect of Doxazosin: Anticancer Activity on SH-SY5Y Neuroblastoma Cells and Neuroprotection on an In Vitro Model of Alzheimer's Disease. Neuroscience 2019; 404:314-325. [DOI: 10.1016/j.neuroscience.2019.02.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 01/31/2019] [Accepted: 02/04/2019] [Indexed: 02/07/2023]
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7
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Rysenkova KD, Semina EV, Karagyaur MN, Shmakova AA, Dyikanov DT, Vasiluev PA, Rubtsov YP, Rubina KA, Tkachuk VA. CRISPR/Cas9 nickase mediated targeting of urokinase receptor gene inhibits neuroblastoma cell proliferation. Oncotarget 2018; 9:29414-29430. [PMID: 30034627 PMCID: PMC6047682 DOI: 10.18632/oncotarget.25647] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 06/05/2018] [Indexed: 12/26/2022] Open
Abstract
Neuroblastoma is a tumor arising from pluripotent sympathoadrenal precursor cells of neural cell origin. Neuroblastoma is one of the most aggressive childhood tumors with highly invasive and metastatic potential. The increased expression of urokinase and its receptor is often associated with a negative prognosis in neuroblastoma patients. We have shown that targeting of the Plaur gene in mouse neuroblastoma Neuro 2A cells by CRISPR/Cas9n results in ~60% decrease in cell proliferation (p<0.05), reduction in the number of Ki-67 positive cells, caspase 3 activation and PARP-1 cleavage. Knockout of uPAR leads to downregulation of mRNA encoding full-length TrkC receptor, which is involved in p38MAPK and Akt signalling pathways. This finding provides a rationale to study a role of uPAR in neuroblastoma progression, since uPAR could be considered a potential therapeutic target in neuroblastoma treatment.
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Affiliation(s)
- Karina D Rysenkova
- Lomonosov Moscow State University, Faculty of Medicine, Laboratory of Gene and Cell Technologies, 119991, Moscow, Russian Federation
| | - Ekaterina V Semina
- Lomonosov Moscow State University, Faculty of Medicine, Laboratory of Gene and Cell Technologies, 119991, Moscow, Russian Federation.,Federal State Budgetary Organization National Cardiology Research Center Ministry of Health of the Russian Federation, Institute of Experimental Cardiology, 121552, Moscow, Russian Federation
| | - Maxim N Karagyaur
- Institute of Regenerative Medicine, Lomonosov Moscow State University, 119991, Moscow, Russian Federation
| | - Anna A Shmakova
- Lomonosov Moscow State University, Faculty of Medicine, Laboratory of Gene and Cell Technologies, 119991, Moscow, Russian Federation
| | - Daniyar T Dyikanov
- Lomonosov Moscow State University, Faculty of Medicine, Laboratory of Gene and Cell Technologies, 119991, Moscow, Russian Federation
| | - Petr A Vasiluev
- Lomonosov Moscow State University, Faculty of Medicine, Laboratory of Gene and Cell Technologies, 119991, Moscow, Russian Federation
| | - Yury P Rubtsov
- Lomonosov Moscow State University, Faculty of Medicine, Laboratory of Gene and Cell Technologies, 119991, Moscow, Russian Federation.,Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 117997, Moscow, Russian Federation
| | - Kseniya A Rubina
- Lomonosov Moscow State University, Faculty of Medicine, Laboratory of Gene and Cell Technologies, 119991, Moscow, Russian Federation
| | - Vsevolod A Tkachuk
- Lomonosov Moscow State University, Faculty of Medicine, Laboratory of Gene and Cell Technologies, 119991, Moscow, Russian Federation.,Federal State Budgetary Organization National Cardiology Research Center Ministry of Health of the Russian Federation, Institute of Experimental Cardiology, 121552, Moscow, Russian Federation
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8
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Navrátilová J, Karasová M, Kohutková Lánová M, Jiráková L, Budková Z, Pacherník J, Šmarda J, Beneš P. Selective elimination of neuroblastoma cells by synergistic effect of Akt kinase inhibitor and tetrathiomolybdate. J Cell Mol Med 2017; 21:1859-1869. [PMID: 28244639 PMCID: PMC5571524 DOI: 10.1111/jcmm.13106] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 12/25/2016] [Indexed: 12/14/2022] Open
Abstract
Neuroblastoma is the most common extracranial solid tumour of infancy. Pathological activation of glucose consumption, glycolysis and glycolysis‐activating Akt kinase occur frequently in neuroblastoma cells, and these changes correlate with poor prognosis of patients. Therefore, several inhibitors of glucose utilization and the Akt kinase activity are in preclinical trials as potential anti‐cancer drugs. However, metabolic plasticity of cancer cells might undermine efficacy of this approach. In this work, we identified oxidative phosphorylation as compensatory mechanism preserving viability of neuroblastoma cells with inhibited glucose uptake/Akt kinase. It was oxidative phosphorylation that maintained intracellular level of ATP and proliferative capacity of these cells. The oxidative phosphorylation inhibitors (rotenone, tetrathiomolybdate) synergized with inhibitor of the Akt kinase/glucose uptake in down‐regulation of both viability of neuroblastoma cells and clonogenic potential of cells forming neuroblastoma spheroids. Interestingly, tetrathiomolybdate acted as highly specific inhibitor of oxygen consumption and activator of lactate production in neuroblastoma cells, but not in normal fibroblasts and neuronal cells. Moreover, the reducing effect of tetrathiomolybdate on cell viability and the level of ATP in the cells with inhibited Akt kinase/glucose uptake was also selective for neuroblastoma cells. Therefore, efficient elimination of neuroblastoma cells requires inhibition of both glucose uptake/Akt kinase and oxidative phosphorylation activities. The use of tetrathiomolybdate as a mitochondrial inhibitor contributes to selectivity of this combined treatment, preferentially targeting neuroblastoma cells.
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Affiliation(s)
- Jarmila Navrátilová
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic.,Center for Biological and Cellular Engineering, International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
| | - Martina Karasová
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Martina Kohutková Lánová
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Ludmila Jiráková
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Zuzana Budková
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jiří Pacherník
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jan Šmarda
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Petr Beneš
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic.,Center for Biological and Cellular Engineering, International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
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Ding J, Li QY, Yu JZ, Wang X, Lu CZ, Ma CG, Xiao BG. The lack of CD131 and the inhibition of Neuro-2a growth by carbamylated erythropoietin. Cell Biol Toxicol 2015; 31:29-38. [PMID: 25656842 DOI: 10.1007/s10565-015-9292-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Accepted: 01/02/2015] [Indexed: 12/11/2022]
Abstract
Recombinant human erythropoietin (EPO), a glycohormone, is one of the leading biopharmaceutical products, while carbamylated erythropoietin (CEPO), an EPO derivative, is attracting widespread interest due to its neuroprotective effects without erythropoiesis in several cells and animal models. However, exogenous EPO promotes an angiogenic response from tumor cells and is associated with tumor growth, but knowledge of CEPO on tumor growth is lacking. Here we show that CEPO, but not EPO, inhibited Neuro-2a growth and viability. As expected, CEPO--unlike EPO--did not activate JAK-2 either in primary neurons or in Neuro-2a cells. Interestingly, CEPO did not induce GDNF expression and subsequent AKT activation in Neuro-2a cells. Before CEPO/EPO treatment, glial cell line-derived neurotrophic factor (GDNF) neutralization and GFR receptor blocking decreased the viability of EPO-treated Neuro-2a cells but did not influence CEPO-treated Neuro-2a cells. As compared to primary neurons, the expression of CD131, as a receptor complex binding to CEPO, is almost lacking in Neuro-2a cells. In BABL/C-nu mice, CEPO did not promote the growth of Neuro-2a cells nor extended the survival time compared to mice treated with EPO. The results indicate that CEPO did not promote tumor growth because of lower expression of CD131 and subsequent dysfunction of CD131/GDNF/AKT pathway in Neuro-2a cells, revealing its therapeutic potential in future clinical application.
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Affiliation(s)
- Jing Ding
- Institute of Neurology, Huashan Hospital, Institutes of Brain Science and State Key Laboratory of Medical Neurobiology, Fudan University, 12 Middle Wulumuqi Road, 200040, Shanghai, China
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10
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Ho WL, Chou CH, Jeng YM, Lu MY, Yang YL, Jou ST, Lin DT, Chang HH, Lin KH, Hsu WM, Huang MC. GALNT2 suppresses malignant phenotypes through IGF-1 receptor and predicts favorable prognosis in neuroblastoma. Oncotarget 2014; 5:12247-59. [PMID: 25362349 PMCID: PMC4322969 DOI: 10.18632/oncotarget.2627] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 10/23/2014] [Indexed: 12/17/2022] Open
Abstract
Aberrant expression of the simple mucin-type carbohydrate antigens such as Tn antigen is associated with malignant transformation and cancer progression. N-acetylgalactosaminyltransferase 2 (GALNT2), one of the enzymes that mediate the initial step of mucin-type O-glycosylation, is responsible for forming Tn antigen. GALNT2 is expressed differentially in nervous tissues during mouse embryogenesis; however, the role of GALNT2 in neuroblastoma (NB) remains unclear. Here we showed that increased GALNT2 expression evaluated using immunohistochemistry in NB tumor tissues correlated well with the histological grade of differentiation as well as younger age at diagnosis, early clinical stage, primary tumor originated from the extra-adrenal site, favorable INPC histology, and MYCN non-amplification. Multivariate analysis showed that GALNT2 expression is an independent prognostic factor for better survival for NB patients. GALNT2 overexpression suppressed IGF-1-induced cell growth, migration, and invasion of NB cells, whereas GALNT2 knockdown enhanced these NB phenotypes. Mechanistic investigations demonstrated that GALNT2 overexpression modified O-glycans on IGF-1R, which suppressed IGF-1-triggered IGF-1R dimerization and subsequent downstream signaling events. Conversely, these properties were reversed by GALNT2 knockdown in NB cells. Our findings suggest that GALNT2 regulates malignant phenotypes of NB cells through the IGF-1R signaling pathway, suggesting a critical role for GALNT2 in the pathogenesis of NB.
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Affiliation(s)
- Wan-Ling Ho
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Pediatrics, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Chih-Hsing Chou
- Graduate Institute of Anatomy and Cell Biology, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yung-Ming Jeng
- Department of Pathology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Meng-Yao Lu
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yung-Li Yang
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Shiann-Tarng Jou
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Dong-Tsamn Lin
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Hsiu-Hao Chang
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Kai-Hsin Lin
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wen-Ming Hsu
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
- Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan
| | - Min-Chuan Huang
- Graduate Institute of Anatomy and Cell Biology, National Taiwan University College of Medicine, Taipei, Taiwan
- Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan
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11
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Zhao X, Li Z, He B, Liu J, Li S, Zhou L, Pan C, Yu Z, Xu Z. Sam68 is a novel marker for aggressive neuroblastoma. Onco Targets Ther 2013; 6:1751-60. [PMID: 24324342 PMCID: PMC3855102 DOI: 10.2147/ott.s52643] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background Neuroblastoma (NB) is the most common solid extracranial tumor in children. However, the molecular mechanism and progression of NB is largely unknown, and unfortunately, the prognosis is poor. Src-associated in mitosis with a molecular weight of 68 kDa (Sam68) is associated with carcinogenesis and neurogenesis. The present study aimed to investigate the clinical and prognostic significance of Sam68 in NB. Methods The expression of Sam68 in immortalized normal epithelial cells, NB cell lines, and in four cases of paired NB tissue and adjacent normal tissue from the same patient was examined using Western blotting, reverse transcription-polymerase chain reaction (PCR) and real-time reverse transcription-PCR. The proliferation of NB cells was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Furthermore, Sam68 protein expression was analyzed in 90 NB cases characterized as clinicopathological using immunohistochemistry. Statistical analyses were applied to evaluate the diagnostic value and associations of Sam68 with clinical parameters. Results Western blotting and reverse transcription-PCR showed that the expression level of Sam68 was markedly higher in NB cell lines than in the immortalized normal epithelial cells at both messenger RNA and protein levels. The MTT assay revealed that Sam68 expression supported proliferation of NB cells. Sam68 expression levels were significantly up-regulated in tumor tissues in comparison to the matched adjacent normal tissues from the same patient. Sam68 protein level was positively correlated with clinical stage (P<0.001), tumor histology (P<0.001), and distant metastasis (P=0.029). Patients with higher Sam68 expression had shorter overall survival time, whereas those with lower tumor Sam68 expression had longer survival time. Conclusion Our results suggest that Sam68 expression is associated with neuroblastoma progression and may represent a novel and valuable predictor for prognostic evaluation of neuroblastoma patients.
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Affiliation(s)
- Xiaohong Zhao
- Department of Pediatric Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China
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Ho WL, Che MI, Chou CH, Chang HH, Jeng YM, Hsu WM, Lin KH, Huang MC. B3GNT3 expression suppresses cell migration and invasion and predicts favorable outcomes in neuroblastoma. Cancer Sci 2013; 104:1600-8. [PMID: 24118321 DOI: 10.1111/cas.12294] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 09/05/2013] [Accepted: 09/08/2013] [Indexed: 12/19/2022] Open
Abstract
Aberrant expression of the simple mucin-type carbohydrate antigens such as T, Tn, sialyl-T and sialyl-Tn is associated with poor prognosis in several cancers. β1,3-N-acetylglucosaminyltransferase-3 (B3GNT3), a member of the β3GlcNAcT family, is responsible for forming extended core 1 (T antigen) oligosaccharides. The role of B3GNT3, which is expressed in various tissues including human fetal brain, in regulating neuroblastoma (NB) formation and cell behaviors remains unclear. Here, we showed that increased B3GNT3 expression evaluated using immunohistochemistry in NB tumor tissues correlated well with the histological grade of differentiation as well as a favorable Shimada's subset of pathology. Univariate and multivariate analyses revealed that positive B3GNT3 expression in tumor tissues predicted a favorable prognosis in NB patients independent of other prognostic markers. B3GNT3 overexpression suppresses T antigen formation and malignant phenotypes including migration and invasion of SK-N-SH cells, whereas B3GNT3 knockdown enhances these phenotypes of SK-N-SH cells. Moreover, B3GNT3 expression decreased phosphorylation of focal adhesion kinase (FAK), Src, paxillin, Akt and ERK1/2. We conclude that B3GNT3 predicts a favorable cancer behavior of NB and suppresses malignant phenotypes by modulating mucin-type O-glycosylation and signaling in NB cells.
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Affiliation(s)
- Wan-ling Ho
- Department of Pediatrics, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Pediatrics, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan; School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
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Qi L, Toyoda H, Shankar V, Sakurai N, Amano K, Kihira K, Iwasa T, Deguchi T, Hori H, Azuma E, Gabazza EC, Komada Y. Heterogeneity of neuroblastoma cell lines in insulin-like growth factor 1 receptor/Akt pathway-mediated cell proliferative responses. Cancer Sci 2013; 104:1162-71. [PMID: 23710710 DOI: 10.1111/cas.12204] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 05/08/2013] [Accepted: 05/15/2013] [Indexed: 12/18/2022] Open
Abstract
Insulin-like growth factor 1 receptor (IGF-1R) is critical for cancer cell proliferation; however, recent clinical anti-IGF-1R trials did not show clear clinical benefit in cancer therapy. We hypothesized that IGF-1R signaling-mediated proliferative response is heterogeneous in neuroblastoma (NB) cells, and analyzed the cell growth of 31 NB cell lines cultured in three different media, including Hybridoma-SFM medium (with insulin) and RPMI1640 with/without 10% FBS. Three growth patterns were found. In response to IGF and insulin, cell proliferation and Akt phosphorylation were upregulated in 13 cell lines, and suppressed by MK2206 (Akt inhibitor) and picropodophyllin (IGF-1R inhibitor). Interestingly, 3 of these 13 cell lines showed Akt self-phosphorylation and cell proliferation in RPMI1640; their proliferation was downregulated by anti-IGF-1 or anti-IGF-2 neutralizing antibody, suggesting the existence of an autocrine loop in the IGF-1R/Akt pathway. Eighteen NB cell lines did not proliferate in RPMI1640, even though Akt phosphorylation was upregulated by IGF and insulin. Based on the heterogeneous response of the IGF-1R/Akt pathway, the 31 NB cell lines could be classified into group 1 (autocrine IGF-mediated), group 2 (exogenous IGF-mediated) and group 3 (partially exogenous IGF-mediated) NB cell lines. In addition, group 3 NB cell lines were different from group 1 and 2, in terms of serum starvation-induced caspase 3 cleavage and picropodophyllin-induced G2/M arrest. These results indicate that the response of the IGF-1R/Akt pathway is an important determinant of the sensitivity to IGF-1R antagonists in NB. To our knowledge, this is the first report describing heterogeneity in the IGF-1R/Akt-mediated proliferation of NB cells.
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Affiliation(s)
- Lei Qi
- Department of Pediatrics and Developmental Science, Graduate School of Medicine, Mie University, Tsu, Japan
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Chen SJ, Zhang W, Tong Q, Conrad K, Hirschler-Laszkiewicz I, Bayerl M, Kim JK, Cheung JY, Miller BA. Role of TRPM2 in cell proliferation and susceptibility to oxidative stress. Am J Physiol Cell Physiol 2013; 304:C548-60. [PMID: 23302782 DOI: 10.1152/ajpcell.00069.2012] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The transient receptor potential (TRP) channel TRPM2 is an ion channel that modulates cell survival. We report here that full-length (TRPM2-L) and short (TRPM2-S) isoform expression was significantly increased in human neuroblastoma compared with adrenal gland. To differentiate the roles of TRPM2-L and TRPM2-S in cell proliferation and survival, we established neuroblastoma SH-SY5Y cell lines stably expressing either TRPM2 isoform or empty vector. Cells expressing TRPM2-S showed significantly enhanced proliferation, downregulation of phosphatase and tensin homolog (PTEN), and increased protein kinase B (Akt) phosphorylation and cell surface glucose transporter 1 (Glut1) compared with cells expressing TRPM2-L or empty vector. ERK phosphorylation was increased, and forkhead box O 3a (FOXO3a) levels were decreased. Inhibitor studies demonstrated that enhanced proliferation was dependent on phosphatidylinositol 3-kinase/Akt, ERK, and NADPH oxidase activation. On the other hand, TRPM2-S-expressing cells were significantly more susceptible to cell death induced by low H2O2 concentrations (50-100 μM), whereas TRPM2-L-expressing cells were protected. This was associated with a significant increase in FOXO3a, MnSOD (SOD2), and membrane Glut1 in TRPM2-L-expressing cells compared with TRPM2-S expressing cells. We conclude that TRPM2 channels occupy a key role in cell proliferation and survival following oxidative stress in neuroblastoma. Our results suggest that overexpression of TRPM2-S results in increased proliferation through phosphatidylinositol 3-kinase/Akt and ERK pathways, while overexpression of TRPM2-L confers protection against oxidative stress-induced cell death through FOXO3a and SOD. TRPM2 channels may represent a novel future therapeutic target in diseases involving oxidative stress.
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Affiliation(s)
- Shu-jen Chen
- Department of Pediatrics, Pennsylvania State University College of Medicine, Milton S. Hershey Medical Center, PO Box 850, Hershey, PA 17033, USA
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Wojtalla A, Salm F, Christiansen DG, Cremona T, Cwiek P, Shalaby T, Gross N, Grotzer MA, Arcaro A. Novel agents targeting the IGF-1R/PI3K pathway impair cell proliferation and survival in subsets of medulloblastoma and neuroblastoma. PLoS One 2012; 7:e47109. [PMID: 23056595 PMCID: PMC3466180 DOI: 10.1371/journal.pone.0047109] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Accepted: 09/10/2012] [Indexed: 12/31/2022] Open
Abstract
The receptor tyrosine kinase (RTK)/phosphoinositide 3-kinase (PI3K) pathway is fundamental for cancer cell proliferation and is known to be frequently altered and activated in neoplasia, including embryonal tumors. Based on the high frequency of alterations, targeting components of the PI3K signaling pathway is considered to be a promising therapeutic approach for cancer treatment. Here, we have investigated the potential of targeting the axis of the insulin-like growth factor-1 receptor (IGF-1R) and PI3K signaling in two common cancers of childhood: neuroblastoma, the most common extracranial tumor in children and medulloblastoma, the most frequent malignant childhood brain tumor. By treating neuroblastoma and medulloblastoma cells with R1507, a specific humanized monoclonal antibody against the IGF-1R, we could observe cell line-specific responses and in some cases a strong decrease in cell proliferation. In contrast, targeting the PI3K p110α with the specific inhibitor PIK75 resulted in broad anti-proliferative effects in a panel of neuro- and medulloblastoma cell lines. Additionally, sensitization to commonly used chemotherapeutic agents occurred in neuroblastoma cells upon treatment with R1507 or PIK75. Furthermore, by studying the expression and phosphorylation state of IGF-1R/PI3K downstream signaling targets we found down-regulated signaling pathway activation. In addition, apoptosis occurred in embryonal tumor cells after treatment with PIK75 or R1507. Together, our studies demonstrate the potential of targeting the IGF-1R/PI3K signaling axis in embryonal tumors. Hopefully, this knowledge will contribute to the development of urgently required new targeted therapies for embryonal tumors.
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Affiliation(s)
- Anna Wojtalla
- Division of Pediatric Hematology/Oncology, Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Fabiana Salm
- Division of Pediatric Hematology/Oncology, Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Ditte G. Christiansen
- Division of Pediatric Hematology/Oncology, Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Tiziana Cremona
- Department of Oncology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Paulina Cwiek
- Division of Pediatric Hematology/Oncology, Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Tarek Shalaby
- Department of Oncology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Nicole Gross
- Department of Pediatrics, Pediatric Oncology Research, University Hospital CHUV, Lausanne, Switzerland
| | - Michael A. Grotzer
- Department of Oncology, University Children's Hospital Zurich, Zurich, Switzerland
| | - Alexandre Arcaro
- Division of Pediatric Hematology/Oncology, Department of Clinical Research, University of Bern, Bern, Switzerland
- * E-mail:
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Shabani M, Larizadeh MH, Parsania S, Hajali V, Shojaei A. Evaluation of destructive effects of exposure to cisplatin during developmental stage: no profound evidence for sex differences in impaired motor and memory performance. Int J Neurosci 2012; 122:439-48. [PMID: 22416800 DOI: 10.3109/00207454.2012.673515] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We have elucidated the alteration in hippocampal and cerebellum function following chronic cisplatin treatment in male and female rats. Hippocampus and cerebellum related behavioral dysfunction in cisplatin-treated [intraperitoneally, 5 mg/(kg/week) for 5 weeks from 23-day-old] rats were analyzed using explorative, motor function, learning, and memory tasks (grasping, rotarod, open field, and Morris water maze tests). Exposure to cisplatin impaired the motor coordination in male and female rats. Exposure to cisplatin was reflected by a decrease in grasping time compared to vehicle-treated controls (saline) only in male rat while there were not any differences in female rats. When the rearing frequency, total distance moved and velocity of their recorded in open fieldtest, both males and females were dramatically affected by exposure to cisplatin. Compared to the saline, male and female rats trained 5 weeks after cisplatin injection showed significant memory deficits in the Morris water maze test. However, hippocampal and cerebellum functions of male and female rats were profoundly affected by exposure to cisplatin while no sex differences in the most variable were evident.
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Affiliation(s)
- Mohammad Shabani
- Neuroscience Research Center, Kerman University of Medical Sciences, Kerman, Islamic Republic of Iran.
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Sun W, Modak S. Emerging treatment options for the treatment of neuroblastoma: potential role of perifosine. Onco Targets Ther 2012; 5:21-9. [PMID: 22419878 PMCID: PMC3299554 DOI: 10.2147/ott.s14578] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Achieving a cure for high-risk neuroblastoma, the most common extracranial solid tumor in children, remains a formidable task despite the recent addition of antibody-mediated anti-GD2 immunotherapy to established multimodality therapy. The PI3K/Akt pathway is a pivotal signaling pathway utilized by a plethora of receptor tyrosine kinases that contribute to the aggressive phenotype of high-risk neuroblastoma. Akt is aberrantly activated in high-risk neuroblastoma and is therefore an attractive therapeutic target. Perifosine is the best-characterized Akt inhibitor in preclinical studies and in clinical trials in adults, although safety in children is not yet confirmed. It is a synthetic third-generation alkylphospholipid with good oral bioavailability and modest side effects. Perifosine targets the lipid-binding PH domain of Akt and inhibits the translocation of Akt to the cell membrane, an essential step for Akt activation. It decreases Akt phosphorylation and increases caspase-dependent apoptosis in neuroblastoma cell lines, inhibits growth of neuroblastoma xenografts, and overcomes RTK/ligand-mediated chemoresistance. It is currently being studied in two Phase I clinical trials in children with recurrent or refractory solid tumors including neuroblastoma. In the single agent trial (ClinicalTrials.gov identifier NCT00776867), maximum tolerated dose has not yet been reached and pharmacokinetic data has been accrued. In the second study (ClinicalTrials.gov identifier NCT01049841), patients are treated with a combination of perifosine and the mTOR-inhibitor temsirolimus based on preclinical data showing synergy of the two agents, and the premise that direct Akt inhibition may overcome Akt activation secondary to mTOR inhibition. Based on results from adult trials, it is unlikely that perifosine alone will produce dramatic therapeutic effects against high-risk neuroblastoma. However, given the recent encouraging early-phase combination therapy results in adults with multiple myeloma and colorectal carcinoma, rational perifosine-containing combination regimens hold promise for neuroblastoma therapy. These will be explored after safety in children is established in Phase I studies.
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Affiliation(s)
- Weili Sun
- Department of Pediatrics, Keck School of Medicine, University of Southern California, Children's Hospital of Los Angeles, Los Angeles, CA, USA
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Autocrine prostaglandin E2 signaling promotes tumor cell survival and proliferation in childhood neuroblastoma. PLoS One 2012; 7:e29331. [PMID: 22276108 PMCID: PMC3261878 DOI: 10.1371/journal.pone.0029331] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2011] [Accepted: 11/25/2011] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Prostaglandin E(2) (PGE(2)) is an important mediator in tumor-promoting inflammation. High expression of cyclooxygenase-2 (COX-2) has been detected in the embryonic childhood tumor neuroblastoma, and treatment with COX inhibitors significantly reduces tumor growth. Here, we have investigated the significance of a high COX-2 expression in neuroblastoma by analysis of PGE(2) production, the expression pattern and localization of PGE(2) receptors and intracellular signal transduction pathways activated by PGE(2). PRINCIPAL FINDINGS A high expression of the PGE(2) receptors, EP1, EP2, EP3 and EP4 in primary neuroblastomas, independent of biological and clinical characteristics, was detected using immunohistochemistry. In addition, mRNA and protein corresponding to each of the receptors were detected in neuroblastoma cell lines. Immunofluorescent staining revealed localization of the receptors to the cellular membrane, in the cytoplasm, and in the nuclear compartment. Neuroblastoma cells produced PGE(2) and stimulation of serum-starved neuroblastoma cells with PGE(2) increased the intracellular concentration of calcium and cyclic AMP with subsequent phosphorylation of Akt. Addition of 16,16-dimethyl PGE(2) (dmPGE(2)) increased cell viability in a time, dose- and cell line-dependent manner. Treatment of neuroblastoma cells with a COX-2 inhibitor resulted in a diminished cell growth and viability that was reversed by the addition of dmPGE(2). Similarly, PGE(2) receptor antagonists caused a decrease in neuroblastoma cell viability in a dose-dependent manner. CONCLUSIONS These findings demonstrate that PGE(2) acts as an autocrine and/or paracrine survival factor for neuroblastoma cells. Hence, specific targeting of PGE(2) signaling provides a novel strategy for the treatment of childhood neuroblastoma through the inhibition of important mediators of tumor-promoting inflammation.
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Sartelet H, Rougemont AL, Fabre M, Castaing M, Duval M, Fetni R, Michiels S, Beaunoyer M, Vassal G. Activation of the phosphatidylinositol 3'-kinase/AKT pathway in neuroblastoma and its regulation by thioredoxin 1. Hum Pathol 2011; 42:1727-39. [PMID: 21641013 DOI: 10.1016/j.humpath.2011.01.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Revised: 01/21/2011] [Accepted: 01/28/2011] [Indexed: 12/15/2022]
Abstract
Neuroblastoma is a malignant pediatric tumor with poor survival. The phosphatidylinositol 3'-kinase/AKT pathway is a crucial regulator of cellular processes including apoptosis. Thioredoxin 1, an inhibitor of tumor-suppressor phosphatase and tensin homolog, is overexpressed in many tumors. The objective of this study was to explore phosphatidylinositol 3'-kinase/AKT pathway activation and regulation by thioredoxin 1 to identify potential therapeutic targets. Immunohistochemical analysis was done on tissue microarrays from tumor samples of 101 patients, using antibodies against phosphatidylinositol 3'-kinase, AKT, activated AKT, phosphatase and tensin homolog, phosphorylated phosphatase and tensin homolog, thioredoxin 1, epidermal growth factor receptor, vascular endothelial growth factor and receptors (vascular endothelial growth factor 1 and vascular endothelial growth receptor 2), platelet-derived growth factor receptors, insulin-like growth factor 1 receptor, neurotrophic tyrosine kinase receptor type 2, phosphorylated 70-kd S6 protein kinase, 4E-binding protein 1, and phosphorylated mammalian target of rapamycin. Using 3 neuroblastoma cell lines, we investigated cell viability with AKT-specific inhibitors (LY294002, RAD001) and thioredoxin 1 alone or in combination. We found activated AKT and AKT expressed in 97% and 98%, respectively, of neuroblastomas, despite a high expression of phosphatase and tensin homolog correlated with thioredoxin 1. AKT expression was greater in metastatic than primary tumors. Insulin-like growth factor 1 receptor, tyrosine kinase receptor type 2, vascular endothelial growth receptor 1, and downstream phosphorylated 70-kd S6 protein kinase were correlated with activated AKT. LY294002 and RAD001 significantly reduced AKT activity and cell viability and induced a G(1) cell cycle arrest. Thioredoxin 1 decreased cytotoxicity of AKT inhibitors and doxorubicin, up-regulated AKT activation, and induced cell growth. Thus, vascular endothelial growth receptor 1, tyrosine kinase receptor type 2, insulin-like growth factor 1 receptor, and thioredoxin 1 emerged as preferentially committed to phosphatidylinositol 3'-kinase/AKT pathway activation as observed in neuroblastoma. Thioredoxin 1 is a potential target for therapeutic intervention.
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Affiliation(s)
- Hervé Sartelet
- UPRES EA3535, University of Paris South, Institut Gustave Roussy, 94805 Villejuif, France.
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Takei Y, Laskey R. Intracellular and Intercellular Cross Talk Between NGF and TNF. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2011; 691:559-65. [DOI: 10.1007/978-1-4419-6612-4_58] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Abstract
Neuroblastoma, the most common extracranial pediatric solid tumor remains a clinical enigma with outcomes ranging from cure in >90% of patients with locoregional tumors with little to no cytotoxic therapy, to <30% for those >18months of age at diagnosis with metastatic disease despite aggressive multimodality therapy. Age, stage and amplification of the MYCN oncogene are the most validated prognostic markers. Recent research has shed light on the biology of neuroblastoma allowing more accurate stratification of patients which has permitted reducing or withholding cytotoxic therapy without affecting outcome for low-risk patients. However, for children with high-risk disease, the development of newer therapeutic strategies is necessary. Current surgery and radiotherapy techniques in conjunction with induction chemotherapy have greatly reduced the risk of local relapse. However, refractory or recurrent osteomedullary disease occurs in most patients with high-risk neuroblastoma. Toxicity limits for high-dose chemotherapy appear to have been reached without further clinical benefit. Neuroblastoma is the first pediatric cancer for which monoclonal-antibody-based immunotherapy has been shown to be effective, particularly for metastatic osteomedullary disease. Radioimmunotherapy appears to be a critical component of a recent, successful regimen for treating patients who relapse in the central nervous system, a possible sanctuary site. Efforts are under way to refine and enhance antibody-based immunotherapy and to determine its optimal use. The identification of newer tumor targets and the harnessing of cell-mediated immunotherapy may generate novel therapeutic approaches. It is likely that a combination of therapeutic modalities will be required to improve survival and cure rates.
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Lahiry L, Saha B, Chakraborty J, Adhikary A, Mohanty S, Hossain DMS, Banerjee S, Das K, Sa G, Das T. Theaflavins target Fas/caspase-8 and Akt/pBad pathways to induce apoptosis in p53-mutated human breast cancer cells. Carcinogenesis 2009; 31:259-68. [DOI: 10.1093/carcin/bgp240] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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Abstract
Recent studies in a variety of leukemias and solid tumors indicate that there is significant heterogeneity with respect to tumor-forming ability within a given population of tumor cells, suggesting that only a subpopulation of cells is responsible for tumorigenesis. These cells have been commonly referred to as cancer stem cells (CSCs) or cancer-initiating cells (CICs). CICs have been shown to be relatively resistant to conventional anticancer therapies and are thus thought to be responsible for disease relapse. As such, they represent a potentially critical therapeutic target. Oncolytic viruses are in clinical trials for cancer and kill cells through mechanisms different from conventional therapeutics. Because these viruses are not susceptible to the same pathways of drug or radiation resistance, it is important to learn whether CICs are susceptible to oncolytic virus infection. Here we review the available data regarding the ability of several different oncolytic virus types to target CICs for destruction.
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Wagner LM, Danks MK. New therapeutic targets for the treatment of high-risk neuroblastoma. J Cell Biochem 2009; 107:46-57. [PMID: 19277986 DOI: 10.1002/jcb.22094] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
High-risk neuroblastoma remains a major problem in pediatric oncology, accounting for 15% of childhood cancer deaths. Although incremental improvements in outcome have been achieved with the intensification of conventional chemotherapy agents and the addition of 13-cis-retinoic acid, only one-third of children with high-risk disease are expected to be long-term survivors when treated with current regimens. In addition, the cost of cure can be quite high, as surviving children remain at risk for additional health problems related to long-term toxicities of treatment. Further advances in therapy will require the targeting of tumor cells in a more selective and efficient way so that survival can be improved without substantially increasing toxicity. In this review we summarize ongoing clinical trials and highlight new developments in our understanding of the molecular biology of neuroblastoma, emphasizing potential targets or pathways that may be exploitable therapeutically.
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Affiliation(s)
- Lars M Wagner
- Division of Pediatric Hematology/Oncology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Roles of ERK, PI3 kinase, and PLC-gamma pathways induced by overexpression of translationally controlled tumor protein in HeLa cells. Arch Biochem Biophys 2009; 485:82-7. [PMID: 19388149 DOI: 10.1016/j.abb.2009.02.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We reported previously that translationally controlled tumor protein (TCTP) is a cytoplasmic repressor of Na,K-ATPase in HeLa cells. In the current study, we showed that TCTP overexpression using adenovirus as vehicle, induced partial inhibition of Na,K-ATPase; phosphorylation of EGFR tyrosine residues 845, 992,1068, and 1148; activation of Ras/Raf/ERK pathway; activation of PI3K/Akt pathway; and phosphorylation of PLC-gamma in HeLa cells. Specific inhibition of PI3K/Akt pathway in contrast to the inhibition of ERK,significantly decreased TCTP overexpression-induced survival signal. Inhibition of PLC-gamma pathway significantly decreased TCTP overexpression-induced cell migration but inhibition of ERK had less effect. These results suggest that TCTP plays a key physiological role in cell survival through Akt pathway and migration through PLC-gamma pathway.
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Abujamra AL, Almeida VR, Brunetto AL, Schwartsmann G, Roesler R. A gastrin-releasing peptide receptor antagonist stimulates Neuro2a neuroblastoma cell growth: prevention by a histone deacetylase inhibitor. Cell Biol Int 2009; 33:899-903. [PMID: 19426821 DOI: 10.1016/j.cellbi.2009.04.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2008] [Revised: 03/23/2009] [Accepted: 04/24/2009] [Indexed: 12/20/2022]
Abstract
Gastrin-releasing peptide (GRP) acts as an autocrine growth factor for neuroblastoma and other types of cancer, and its cell-surface receptor, GRPR, is overexpressed in advanced-stage human neuroblastoma. GRPR knockdown and GRPR antagonism inhibit the growth of experimental neuroblastoma. Here we show that a GRPR antagonist promotes rather than inhibits the growth of neuroblastoma cells. The GRPR antagonist, RC-3095, at 0.1 nM inhibited, whereas at 100 nM stimulated proliferation of Neuro2a murine neuroblastoma cells in vitro. The stimulatory effects were prevented by the histone deacetylase inhibitor (HDACi), sodium butyrate (NaB). Expression of GRPR mRNA in Neuro2a cells was analyzed by RT-PCR. These findings provide evidence that a GRPR antagonist can stimulate the growth of cancer cells, and suggest that GRPR might interact with epigenetic mechanisms in regulating neuroblastoma cell growth.
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Affiliation(s)
- Ana Lucia Abujamra
- Cancer Research Laboratory, Centro de Pesquisas, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2350, 90035-003 Porto Alegre, RS, Brazil
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Garaventa A, Perilongo G. High risk neuroblastoma: a persistent therapeutic challenge. Pediatr Blood Cancer 2008; 51:722-3. [PMID: 18819123 DOI: 10.1002/pbc.21754] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Alberto Garaventa
- Division of Haematology-Oncology, Hospital Giannina Gaslini, Genova-Quarto, Italy
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