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1. Arcaro A, Doepfner KT, Boller D, Guerreiro AS, Shalaby T, Jackson SP, Schoenwaelder SM, Delattre O, Grotzer MA, Fischer B: Novel role for insulin as an autocrine growth factor for malignant brain tumour cells. Biochem J; 2007 Aug 15;406(1):57-66
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  • AT/RTs (atypical teratoid/rhabdoid tumours) of the CNS (central nervous system) are childhood malignancies associated with poor survival rates due to resistance to conventional treatments such as chemotherapy.
  • We characterized a panel of human AT/RT and MRT (malignant rhabdoid tumour) cell lines for expression of RTKs (receptor tyrosine kinases) and their involvement in tumour growth and survival.
  • Pharmacological inhibitors, neutralizing antibodies, or RNAi (RNA interference) targeting the IR impaired the growth of AT/RT cell lines and induced apoptosis.
  • Experiments using RNAi and isoform-specific pharmacological inhibitors established a key role for the class I(A) PI3K p110alpha isoform in AT/RT cell growth and insulin signalling.
  • [MeSH-minor] Cell Line, Tumor. Cell Proliferation / drug effects. Child, Preschool. Chromosomal Proteins, Non-Histone / metabolism. Culture Media, Serum-Free. DNA-Binding Proteins / metabolism. Down-Regulation / drug effects. Down-Regulation / genetics. Enzyme Activation / drug effects. Female. Humans. Infant. Isoenzymes / metabolism. Male. Phosphatidylinositol 3-Kinases / metabolism. Proto-Oncogene Proteins c-akt / metabolism. RNA, Small Interfering / metabolism. Receptor, IGF Type 1 / metabolism. Receptor, Insulin / genetics. Receptor, Insulin / metabolism. Signal Transduction / drug effects. Transcription Factors / metabolism

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  • (PMID = 17506723.001).
  • [ISSN] 1470-8728
  • [Journal-full-title] The Biochemical journal
  • [ISO-abbreviation] Biochem. J.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] England
  • [Chemical-registry-number] 0 / Chromosomal Proteins, Non-Histone; 0 / Culture Media, Serum-Free; 0 / DNA-Binding Proteins; 0 / Growth Substances; 0 / Insulin; 0 / Isoenzymes; 0 / RNA, Small Interfering; 0 / SMARCB1 protein, human; 0 / Transcription Factors; EC 2.7.1.- / Phosphatidylinositol 3-Kinases; EC 2.7.10.1 / Receptor, IGF Type 1; EC 2.7.10.1 / Receptor, Insulin; EC 2.7.11.1 / Proto-Oncogene Proteins c-akt
  • [Other-IDs] NLM/ PMC1948991
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2. Athale UH, Duckworth J, Odame I, Barr R: Childhood atypical teratoid rhabdoid tumor of the central nervous system: a meta-analysis of observational studies. J Pediatr Hematol Oncol; 2009 Sep;31(9):651-63
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  • [Title] Childhood atypical teratoid rhabdoid tumor of the central nervous system: a meta-analysis of observational studies.
  • PURPOSE: Therapy for central nervous system (CNS) atypical teratoid rhabdoid tumor (ATRT) is controversial.
  • RESULTS: The median OS for patients treated with multiagent chemotherapy (n=79) was 17.3 months (range, 1.5-93 mo); unrelated to age at diagnosis, sex, tumor site, and extent of resection.
  • [MeSH-major] Brain Neoplasms / epidemiology. Rhabdoid Tumor / epidemiology. Teratoma / epidemiology
  • [MeSH-minor] Adolescent. Antineoplastic Combined Chemotherapy Protocols / therapeutic use. Child. Child, Preschool. Cisplatin / administration & dosage. Combined Modality Therapy. Craniotomy. Cyclophosphamide / administration & dosage. Dactinomycin / administration & dosage. Doxorubicin / administration & dosage. Etoposide / administration & dosage. Fatal Outcome. Female. Humans. Infant. Infant, Newborn. Injections, Spinal. Kaplan-Meier Estimate. Male. Prognosis. Prospective Studies. Spinal Neoplasms / diagnosis. Spinal Neoplasms / drug therapy. Spinal Neoplasms / epidemiology. Spinal Neoplasms / radiotherapy. Spinal Neoplasms / surgery. Treatment Outcome. Vincristine / administration & dosage

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  • (PMID = 19707161.001).
  • [ISSN] 1536-3678
  • [Journal-full-title] Journal of pediatric hematology/oncology
  • [ISO-abbreviation] J. Pediatr. Hematol. Oncol.
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article; Meta-Analysis
  • [Publication-country] United States
  • [Chemical-registry-number] 1CC1JFE158 / Dactinomycin; 5J49Q6B70F / Vincristine; 6PLQ3CP4P3 / Etoposide; 80168379AG / Doxorubicin; 8N3DW7272P / Cyclophosphamide; Q20Q21Q62J / Cisplatin
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3. Furchert SE, Lanvers-Kaminsky C, Juürgens H, Jung M, Loidl A, Frühwald MC: Inhibitors of histone deacetylases as potential therapeutic tools for high-risk embryonal tumors of the nervous system of childhood. Int J Cancer; 2007 Apr 15;120(8):1787-94
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  • [Title] Inhibitors of histone deacetylases as potential therapeutic tools for high-risk embryonal tumors of the nervous system of childhood.
  • The authors evaluated the cytotoxicity of histone deacetylase inhibitors (HDI) [MS-275, SAHA, TSA, M344, M360, D85, SW55, SW187 and valproic acid (VPA)] on 13 embryonal tumor cell lines [4 medulloblastomas, 5 neuroblastomas, 2 atypical teratoid/rhabdoid tumors (AT/RT), and 2 malignant rhabdoid tumors of the kidney (RTK)] in MTT assay.
  • HDI inhibited the growth of medulloblastoma, neuroblastoma and rhabdoid tumors in vitro.
  • [MeSH-major] Enzyme Inhibitors / pharmacology. Histone Deacetylase Inhibitors. Medulloblastoma / drug therapy. Medulloblastoma / pathology. Neuroblastoma / drug therapy. Rhabdoid Tumor / drug therapy
  • [MeSH-minor] Acetylation. Annexin A5 / metabolism. Apoptosis / drug effects. Blotting, Western. Brain Neoplasms / drug therapy. Brain Neoplasms / metabolism. Brain Neoplasms / pathology. Cell Line, Tumor. Histones / metabolism. Humans. Polymerase Chain Reaction. Risk Factors. Valproic Acid / pharmacology

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  • [Copyright] (c) 2007 Wiley-Liss, Inc.
  • (PMID = 17230517.001).
  • [ISSN] 0020-7136
  • [Journal-full-title] International journal of cancer
  • [ISO-abbreviation] Int. J. Cancer
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / Annexin A5; 0 / Enzyme Inhibitors; 0 / Histone Deacetylase Inhibitors; 0 / Histones; 614OI1Z5WI / Valproic Acid
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4. Nicolaides T, Tihan T, Horn B, Biegel J, Prados M, Banerjee A: High-dose chemotherapy and autologous stem cell rescue for atypical teratoid/rhabdoid tumor of the central nervous system. J Neurooncol; 2010 May;98(1):117-23
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  • [Title] High-dose chemotherapy and autologous stem cell rescue for atypical teratoid/rhabdoid tumor of the central nervous system.
  • Atypical Teratoid/Rhabdoid tumors (AT/RT) of the central nervous system are rare but aggressive tumors of childhood.
  • In an attempt to improve outcome, patients were treated with aggressive surgical resection and multi-agent chemotherapy, followed by high dose chemotherapy with autologous stem cell rescue.

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  • (PMID = 19936623.001).
  • [ISSN] 1573-7373
  • [Journal-full-title] Journal of neuro-oncology
  • [ISO-abbreviation] J. Neurooncol.
  • [Language] ENG
  • [Grant] United States / NCI NIH HHS / CA / R01 CA046274-18; United States / NCI NIH HHS / CA / R01 CA046274; United States / NCI NIH HHS / CA / CA46274; United States / NCI NIH HHS / CA / T32 CA108462; United States / NCI NIH HHS / CA / CA046274-18; United States / NCI NIH HHS / CA / T32 CA108462-01
  • [Publication-type] Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
  • [Other-IDs] NLM/ NIHMS184133; NLM/ PMC2880232
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5. Graham C, Tucker C, Creech J, Favours E, Billups CA, Liu T, Fouladi M, Freeman BB 3rd, Stewart CF, Houghton PJ: Evaluation of the antitumor efficacy, pharmacokinetics, and pharmacodynamics of the histone deacetylase inhibitor depsipeptide in childhood cancer models in vivo. Clin Cancer Res; 2006 Jan 1;12(1):223-34
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  • [Title] Evaluation of the antitumor efficacy, pharmacokinetics, and pharmacodynamics of the histone deacetylase inhibitor depsipeptide in childhood cancer models in vivo.
  • PURPOSE: Histone acetyltransferases and histone deacetylases (HDAC) control the acetylation state of histones and other proteins regulating transcription and protein function.
  • Several structurally diverse HDAC inhibitors have been developed as cancer therapeutic agents and in vitro have been shown to cause differentiation, cell cycle arrest, or apoptosis.
  • Here, we have evaluated depsipeptide, a natural tetrapeptide HDAC inhibitor, against a panel of pediatric solid tumor models in vivo and evaluated pharmacokinetic and pharmacodynamic variables with tumor sensitivity.
  • EXPERIMENTAL DESIGN: Depsipeptide was administered at the maximum tolerated dose (4.4 mg/kg administered every 7 days x 3 i.v. repeated q21d for a total of two cycles) to scid mice bearing 39 independently derived childhood tumors (9 brain tumors, 11 kidney cancers, 9 rhabdomyosarcomas, 3 neuroblastomas, and 7 osteosarcomas).
  • RESULTS: Of 39 tumors evaluated, three showed objective tumor regressions [two brain tumors (primitive neuroectodermal tumor and atypical teratoid malignant rhabdoid tumor) and one Wilms' tumor].
  • Depsipeptide inhibited growth of many tumor lines but achieved stable disease (<25% increase in volume during treatment cycle 1) in only two tumor models (anaplastic astrocytoma, two rhabdomyosarcomas, and a Wilms' tumor).
  • In two sensitive tumor lines, IRS56 and BT27 (both wild-type p53) p53 increased in treated tumors being maximal at 8 hours and associated with induction of p21(cip1), whereas p53 was stable in tumors with mutant p53.
  • CONCLUSIONS: Our results show that depsipeptide inhibits its target in vivo causing increased histone acetylation; however, this does not correlate with drug sensitivity.
  • The relatively low objective response rate [3 of 39 (8%) tumor lines showing greater than or equal to partial response and 4 (10%) stable disease] administered at dose levels that give clinically relevant drug exposures suggests that as a single agent depsipeptide may have limited clinical utility against pediatric solid tumors in a first-line setting.
  • [MeSH-major] Depsipeptides / pharmacokinetics. Depsipeptides / therapeutic use. Enzyme Inhibitors / pharmacokinetics. Enzyme Inhibitors / therapeutic use. Histone Deacetylases / drug effects. Neoplasms, Experimental / drug therapy
  • [MeSH-minor] Acetylation / drug effects. Animals. Blotting, Western. Cell Line, Tumor. Child. Disease Models, Animal. Female. Histones / drug effects. Humans. Mice. Mice, SCID. Neoplasm Transplantation. Reverse Transcriptase Polymerase Chain Reaction. Tumor Suppressor Protein p53 / drug effects

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  • (PMID = 16397046.001).
  • [ISSN] 1078-0432
  • [Journal-full-title] Clinical cancer research : an official journal of the American Association for Cancer Research
  • [ISO-abbreviation] Clin. Cancer Res.
  • [Language] eng
  • [Grant] United States / NCI NIH HHS / CA / CA21765; United States / NCI NIH HHS / CA / CA23099; United States / NCI NIH HHS / CA / CA96696
  • [Publication-type] Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / Depsipeptides; 0 / Enzyme Inhibitors; 0 / Histones; 0 / Tumor Suppressor Protein p53; EC 3.5.1.98 / Histone Deacetylases
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6. Gardner SL, Asgharzadeh S, Green A, Horn B, McCowage G, Finlay J: Intensive induction chemotherapy followed by high dose chemotherapy with autologous hematopoietic progenitor cell rescue in young children newly diagnosed with central nervous system atypical teratoid rhabdoid tumors. Pediatr Blood Cancer; 2008 Aug;51(2):235-40
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • [Title] Intensive induction chemotherapy followed by high dose chemotherapy with autologous hematopoietic progenitor cell rescue in young children newly diagnosed with central nervous system atypical teratoid rhabdoid tumors.
  • BACKGROUND: Central nervous system (CNS) atypical teratoid rhabdoid tumors (AT/RT) are rare tumors of childhood with a dismal prognosis.
  • Long term survival can be achieved in a subset of young children with CNS AT/RT following resection with the use of multi-drug chemotherapy including high dose methotrexate and myeloablative chemotherapy without radiation therapy (RT).
  • [MeSH-major] Antineoplastic Combined Chemotherapy Protocols / therapeutic use. Brain Neoplasms / therapy. Hematopoietic Stem Cell Transplantation. Rhabdoid Tumor / therapy. Teratoma / therapy

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  • (PMID = 18381756.001).
  • [ISSN] 1545-5017
  • [Journal-full-title] Pediatric blood & cancer
  • [ISO-abbreviation] Pediatr Blood Cancer
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
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7. Shalaby T, von Bueren AO, Hürlimann ML, Fiaschetti G, Castelletti D, Masayuki T, Nagasawa K, Arcaro A, Jelesarov I, Shin-ya K, Grotzer M: Disabling c-Myc in childhood medulloblastoma and atypical teratoid/rhabdoid tumor cells by the potent G-quadruplex interactive agent S2T1-6OTD. Mol Cancer Ther; 2010 Jan;9(1):167-79
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  • [Title] Disabling c-Myc in childhood medulloblastoma and atypical teratoid/rhabdoid tumor cells by the potent G-quadruplex interactive agent S2T1-6OTD.
  • We investigated here the effects of S2T1-6OTD, a novel telomestatin derivative that is synthesized to target G-quadruplex-forming DNA sequences, on a representative panel of human medulloblastoma (MB) and atypical teratoid/rhabdoid (AT/RT) childhood brain cancer cell lines.
  • In remarkable contrast to control cells, short-term (72-hour) treatment with S2T1-6OTD resulted in a dose- and time-dependent antiproliferative effect in all MB and AT/RT brain tumor cell lines tested (IC(50), 0.25-0.39 micromol/L).
  • On in vivo animal testing, S2T1-6OTD may well represent a novel therapeutic strategy for childhood brain tumors.
  • [MeSH-major] G-Quadruplexes / drug effects. Medulloblastoma / metabolism. Medulloblastoma / pathology. Oxazoles / pharmacology. Proto-Oncogene Proteins c-myc / metabolism. Rhabdoid Tumor / pathology. Teratoma / pathology
  • [MeSH-minor] Apoptosis / drug effects. Base Sequence. Cell Cycle / drug effects. Cell Line, Tumor. Cell Proliferation / drug effects. Cell Survival / drug effects. Cyclin-Dependent Kinase 2 / metabolism. Dose-Response Relationship, Drug. Down-Regulation / drug effects. Drug Screening Assays, Antitumor. Humans. Promoter Regions, Genetic / genetics. Protein Binding / drug effects. RNA, Messenger / genetics. RNA, Messenger / metabolism. Telomerase / genetics. Telomerase / metabolism. Time Factors


8. Zimmerman MA, Goumnerova LC, Proctor M, Scott RM, Marcus K, Pomeroy SL, Turner CD, Chi SN, Chordas C, Kieran MW: Continuous remission of newly diagnosed and relapsed central nervous system atypical teratoid/rhabdoid tumor. J Neurooncol; 2005 Mar;72(1):77-84
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • [Title] Continuous remission of newly diagnosed and relapsed central nervous system atypical teratoid/rhabdoid tumor.
  • Atypical teratoid/rhabdoid tumors (AT/RT) are highly malignant lesions of childhood that carry a very poor prognosis.
  • In spite of multiple treatment regimens consisting of maximal surgical resection (including second look surgery), radiation therapy (focal and craniospinal), and multi-agent intravenous, oral and intrathecal chemotherapy, with or without high-dose therapy and stem cell rescue, only seven long-term survivors of CNS AT/RT have been reported, all in patients with newly diagnosed disease.
  • We now report on four children, two with newly diagnosed CNS AT/RT and two with progressive disease after multi-agent chemotherapy who are long term survivors (median follow-up of 37 months) using a combination of surgery, radiation therapy, and intensive chemotherapy.
  • The chemotherapy component was modified from the Intergroup Rhabdomyosarcoma Study Group (IRS III) parameningeal protocol as three of the seven reported survivors in the literature were treated using this type of therapy.
  • More importantly, we report on the first two survivors after relapse with multi-agent intravenous and intrathecal chemotherapy treated with this modified regimen.
  • [MeSH-major] Antineoplastic Combined Chemotherapy Protocols / therapeutic use. Brain Neoplasms / therapy. Neoplasm Recurrence, Local / therapy. Rhabdoid Tumor / therapy. Teratoma / therapy

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  • (PMID = 15803379.001).
  • [ISSN] 0167-594X
  • [Journal-full-title] Journal of neuro-oncology
  • [ISO-abbreviation] J. Neurooncol.
  • [Language] eng
  • [Publication-type] Case Reports; Journal Article; Research Support, Non-U.S. Gov't; Review
  • [Publication-country] United States
  • [Number-of-references] 37
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