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Lo Giudice A, La Rosa S, Ronsivalle V, Isola G, Cicciù M, Alessandri-Bonetti G, Leonardi R. Indications for Dental Specialists for Treating Obstructive Sleep Apnea with Mandibular Advancement Devices: A Narrative Review. Int J Dent 2024; 2024:1007237. [PMID: 38585252 PMCID: PMC10999292 DOI: 10.1155/2024/1007237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/09/2024] Open
Abstract
Obstructive sleep apnea (OSA) syndrome is characterized by repeated airway collapse during sleep. It determines cardiovascular, pulmonary, and neurocognitive consequences and is associated with several daytime and nighttime symptoms that influence the patient's quality of life. The contribution of the dental specialist in the clinical management of OSA patients entails participating in the screening process as diagnostic sentinels and providing adequate treatment using mandibular advancement devices (MADs). Since the treatment of OSA requires a multidisciplinary approach, including different medical specialists, dentists should have a comprehensive understanding of medical and dental factors that influence the strategy and effectiveness of OSA treatment with MAD. Such expertise is crucial in determining the appropriate treatment indications and helps clinicians establish a consolidated position within the multidisciplinary OSA team. In this regard, this review summarizes the evidence of the clinical indications for MAD treatment and provides the dental specialist with helpful information about medical, functional, and other relevant factors that should be considered during diagnosis, treatment plan, and follow-up stages. Information retrieved was organized and discussed, generating specific domains/queries oriented to the clinical management of OSA patients from the clinical perspective of dental specialists.
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Affiliation(s)
- Antonino Lo Giudice
- Department of General Surgery and Medical-Surgical Specialties, Section of Orthodontics, Policlinico Universitario “Gaspare Rodolico—San Marco”, University of Catania, Via Santa Sofia 78, Catania 95123, Italy
| | - Salvatore La Rosa
- Department of General Surgery and Medical-Surgical Specialties, Section of Orthodontics, Policlinico Universitario “Gaspare Rodolico—San Marco”, University of Catania, Via Santa Sofia 78, Catania 95123, Italy
| | - Vincenzo Ronsivalle
- Department of General Surgery and Medical-Surgical Specialties, Section of Oral Surgery, Policlinico Universitario “Gaspare Rodolico—San Marco”, University of Catania, Via Santa Sofia 78, Catania 95123, Italy
| | - Gaetano Isola
- Department of General Surgery and Medical-Surgical Specialties, Section of Periodontology, Policlinico Universitario “Gaspare Rodolico—San Marco”, University of Catania, Via Santa Sofia 78, Catania 95123, Italy
| | - Marco Cicciù
- Department of General Surgery and Medical-Surgical Specialties, Section of Oral Surgery, Policlinico Universitario “Gaspare Rodolico—San Marco”, University of Catania, Via Santa Sofia 78, Catania 95123, Italy
| | - Giulio Alessandri-Bonetti
- Department of Biomedical and Neuromotor Sciences (DIBINEM), Section of Orthodontics, University of Bologna, Bologna, Italy
| | - Rosalia Leonardi
- Department of General Surgery and Medical-Surgical Specialties, Section of Orthodontics, Policlinico Universitario “Gaspare Rodolico—San Marco”, University of Catania, Via Santa Sofia 78, Catania 95123, Italy
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Ronsivalle V, Nucci L, Bua N, Palazzo G, La Rosa S. Elastodontic Appliances for the Interception of Malocclusion in Children: A Systematic Narrative Hybrid Review. Children (Basel) 2023; 10:1821. [PMID: 38002912 PMCID: PMC10670240 DOI: 10.3390/children10111821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/10/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023]
Abstract
BACKGROUND Interceptive orthodontic treatment aims to eliminate factors that prevent the harmonious development of the maxillary and mandibular arches during childhood, and elastodontic appliances (EAs) represent a group of devices with an increasingly important role. This systematic narrative hybrid review (HR) aims to provide an overview of the clinical indications for the use of EAs according to the available evidence and to identify potential research areas for unexplored applications. MATERIALS AND METHODS To assess the available literature on the subject, selective database searches were performed between July 2023 and September 2023. With the assistance of a health sciences librarian, a search strategy that utilized terms related to elastodontic therapy was developed. Embase, Scopus, PubMed, and Web of Science were the databases used. RESULTS The current literature addressing the usability of EAs is scarce and mostly limited to case reports and case series. After 2168 citations were found through the searches, 13 studies were ultimately included. In this regard, information about the clinical use and effectiveness of EAs are reported in a narrative form, defining specific domains of the application that are clinically oriented, including sagittal and transversal discrepancies, atypical swallowing, teeth malposition, two-phase orthodontics and a lack of teeth retention. CONCLUSIONS Within the intrinsic quality limitation of the available literature, it seems that EAs may represent a promising treatment alternative for managing mild-to-moderate malocclusion in children as an adjuvant therapy to the interruption of spoiled habits.
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Affiliation(s)
- Vincenzo Ronsivalle
- Department of Medical-Surgical Specialties—Section of Orthodontics, School of Dentistry, University of Catania, Policlinico Universitario “G. Rodolico-San Marco”, 95123 Catania, Italy; (N.B.); (G.P.); (S.L.R.)
| | - Ludovica Nucci
- Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, 80100 Naples, Italy
| | - Nicolò Bua
- Department of Medical-Surgical Specialties—Section of Orthodontics, School of Dentistry, University of Catania, Policlinico Universitario “G. Rodolico-San Marco”, 95123 Catania, Italy; (N.B.); (G.P.); (S.L.R.)
| | - Giuseppe Palazzo
- Department of Medical-Surgical Specialties—Section of Orthodontics, School of Dentistry, University of Catania, Policlinico Universitario “G. Rodolico-San Marco”, 95123 Catania, Italy; (N.B.); (G.P.); (S.L.R.)
| | - Salvatore La Rosa
- Department of Medical-Surgical Specialties—Section of Orthodontics, School of Dentistry, University of Catania, Policlinico Universitario “G. Rodolico-San Marco”, 95123 Catania, Italy; (N.B.); (G.P.); (S.L.R.)
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Ronsivalle V, Quinzi V, La Rosa S, Leonardi R, Lo Giudice A. Comparative Analysis of Skeletal Changes, Occlusal Changes, and Palatal Morphology in Children with Mild Class III Malocclusion Treated with Elastodontic Appliances and Bimaxillary Plates. Children (Basel) 2023; 10:1219. [PMID: 37508716 PMCID: PMC10377802 DOI: 10.3390/children10071219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/02/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023]
Abstract
BACKGROUND The aim of the present study was to compare the changes observed in children after the early treatment of mild class III malocclusion using bimaxillary removable plates supported by class III elastics and elastodontic devices. METHODS Twenty children (mean age 7.6 ± 1.1 years) with signs of class III malocclusion were treated using by-maxillary plates (PG group) with class III elastics (10 subjects = mean age 7.9 ± 1.3 years) or using class III elastodontic devices (EG group) (10 subjects = mean age 7.4 ± 0.8 years). Digital models and lateral cephalograms were obtained before treatment (T0) and at the end of treatment (T1). The digital models were analyzed to assess occlusal changes and maxillary morphology using the surface-to-surface matching technique. Changes in cephalometric parameters were also analyzed. The data outcomes were statistically analyzed using the paired Student's t test for inter-timing assessments and the independent Student's t test for inter-group assessments. RESULTS Both groups showed correction of class III malocclusions, with a significant increase in the ANB angle and the overjet (p < 0.05). Subjects in the PG group exhibited a greater reduction in the inter-incisal angle compared to the EG group (p < 0.05). The children in the EG group had a significantly lower percentage of palatal morphology matching between T0 and T1 compared to the PG group (p < 0.05), suggesting greater morphological changes in the palate. CONCLUSIONS Elastodontic appliances (EAs) and bi-maxillary plates successfully correct class III malocclusions in children. However, elastodontic devices significantly improved the morphology of the palate, both in the transverse and anteroposterior directions.
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Affiliation(s)
- Vincenzo Ronsivalle
- Department of Medical-Surgical Specialties-Section of Orthodontics, School of Dentistry, University of Catania, Policlinico Universitario "G. Rodolico-San Marco", Via Santa Sofia 78, 95123 Catania, Italy
| | - Vincenzo Quinzi
- Department of Life, Health & Environmental Sciences, Postgraduate School of Orthodontics, University of L'Aquila, 67100 L'Aquila, Italy
| | - Salvatore La Rosa
- Department of Medical-Surgical Specialties-Section of Orthodontics, School of Dentistry, University of Catania, Policlinico Universitario "G. Rodolico-San Marco", Via Santa Sofia 78, 95123 Catania, Italy
| | - Rosalia Leonardi
- Department of Medical-Surgical Specialties-Section of Orthodontics, School of Dentistry, University of Catania, Policlinico Universitario "G. Rodolico-San Marco", Via Santa Sofia 78, 95123 Catania, Italy
| | - Antonino Lo Giudice
- Department of Medical-Surgical Specialties-Section of Orthodontics, School of Dentistry, University of Catania, Policlinico Universitario "G. Rodolico-San Marco", Via Santa Sofia 78, 95123 Catania, Italy
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Chang LS, Oblinger JL, Smith AE, Ferrer M, Angus SP, Hawley E, Petrilli AM, Beauchamp RL, Riecken LB, Erdin S, Poi M, Huang J, Bessler WK, Zhang X, Guha R, Thomas C, Burns SS, Gilbert TSK, Jiang L, Li X, Lu Q, Yuan J, He Y, Dixon SAH, Masters A, Jones DR, Yates CW, Haggarty SJ, La Rosa S, Welling DB, Stemmer-Rachamimov AO, Plotkin SR, Gusella JF, Guinney J, Morrison H, Ramesh V, Fernandez-Valle C, Johnson GL, Blakeley JO, Clapp DW. Brigatinib causes tumor shrinkage in both NF2-deficient meningioma and schwannoma through inhibition of multiple tyrosine kinases but not ALK. PLoS One 2021; 16:e0252048. [PMID: 34264955 PMCID: PMC8282008 DOI: 10.1371/journal.pone.0252048] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 05/07/2021] [Indexed: 12/21/2022] Open
Abstract
Neurofibromatosis Type 2 (NF2) is an autosomal dominant genetic syndrome caused by mutations in the NF2 tumor suppressor gene resulting in multiple schwannomas and meningiomas. There are no FDA approved therapies for these tumors and their relentless progression results in high rates of morbidity and mortality. Through a combination of high throughput screens, preclinical in vivo modeling, and evaluation of the kinome en masse, we identified actionable drug targets and efficacious experimental therapeutics for the treatment of NF2 related schwannomas and meningiomas. These efforts identified brigatinib (ALUNBRIG®), an FDA-approved inhibitor of multiple tyrosine kinases including ALK, to be a potent inhibitor of tumor growth in established NF2 deficient xenograft meningiomas and a genetically engineered murine model of spontaneous NF2 schwannomas. Surprisingly, neither meningioma nor schwannoma cells express ALK. Instead, we demonstrate that brigatinib inhibited multiple tyrosine kinases, including EphA2, Fer and focal adhesion kinase 1 (FAK1). These data demonstrate the power of the de novo unbiased approach for drug discovery and represents a major step forward in the advancement of therapeutics for the treatment of NF2 related malignancies.
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Affiliation(s)
- Long-Sheng Chang
- The Research Institute at Nationwide Children’s Hospital and Department of Pediatrics, Center for Childhood Cancer and Blood Diseases, The Ohio State University College of Medicine, Columbus, Ohio, United States of America
- * E-mail: (L-SC); (DWC)
| | - Janet L. Oblinger
- The Research Institute at Nationwide Children’s Hospital and Department of Pediatrics, Center for Childhood Cancer and Blood Diseases, The Ohio State University College of Medicine, Columbus, Ohio, United States of America
| | - Abbi E. Smith
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
| | - Marc Ferrer
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Steven P. Angus
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
- University of North Carolina School of Medicine, Chapel Hill, North Carolina, United States of America
| | - Eric Hawley
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
| | - Alejandra M. Petrilli
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Lake Nona-Orlando, Florida, United States of America
| | - Roberta L. Beauchamp
- Massachusetts General Hospital and Department of Neurology, Center for Genomic Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | | | - Serkan Erdin
- Massachusetts General Hospital and Department of Neurology, Center for Genomic Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Ming Poi
- Division of Pharmacy Practice and Science, The Ohio State University College of Pharmacy, Columbus, Ohio, United States of America
| | - Jie Huang
- The Research Institute at Nationwide Children’s Hospital and Department of Pediatrics, Center for Childhood Cancer and Blood Diseases, The Ohio State University College of Medicine, Columbus, Ohio, United States of America
| | - Waylan K. Bessler
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
| | - Xiaohu Zhang
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Rajarshi Guha
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Craig Thomas
- Division of Preclinical Innovation, National Center for Advancing Translational Sciences, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Sarah S. Burns
- The Research Institute at Nationwide Children’s Hospital and Department of Pediatrics, Center for Childhood Cancer and Blood Diseases, The Ohio State University College of Medicine, Columbus, Ohio, United States of America
| | - Thomas S. K. Gilbert
- University of North Carolina School of Medicine, Chapel Hill, North Carolina, United States of America
| | - Li Jiang
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
| | - Xiaohong Li
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
| | - Qingbo Lu
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
| | - Jin Yuan
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
| | - Yongzheng He
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
| | - Shelley A. H. Dixon
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
| | - Andrea Masters
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
| | - David R. Jones
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
| | - Charles W. Yates
- Department of Otolaryngology and Head/Neck Surgery, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Stephen J. Haggarty
- Massachusetts General Hospital and Department of Neurology, Center for Genomic Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Salvatore La Rosa
- Children’s Tumor Foundation, New York, New York, United States of America
| | - D. Bradley Welling
- Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Massachusetts General Hospital and Harvard University, Boston, Massachusetts, United States of America
| | - Anat O. Stemmer-Rachamimov
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Scott R. Plotkin
- Massachusetts General Hospital and Department of Neurology, Center for Genomic Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - James F. Gusella
- Center for Genomic Medicine, Massachusetts General Hospital and Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Justin Guinney
- Sage Bionetworks, Seattle, Washington, United States of America
| | - Helen Morrison
- Leibniz Institute on Aging–Fritz-Lipmann Institute (FLI), Jena, Germany
| | - Vijaya Ramesh
- Massachusetts General Hospital and Department of Neurology, Center for Genomic Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Cristina Fernandez-Valle
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Lake Nona-Orlando, Florida, United States of America
| | - Gary L. Johnson
- University of North Carolina School of Medicine, Chapel Hill, North Carolina, United States of America
| | - Jaishri O. Blakeley
- Departments of Neurology, Neurosurgery and Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - D. Wade Clapp
- Department of Pediatrics, Indiana University, School of Medicine, Indianapolis, Indiana, United States of America
- * E-mail: (L-SC); (DWC)
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La Rosa S, Bakker AC, Browder V, Blakeley JO, Verma SK, Wong LM, Morris J, Bora N. Abstract 2057: Delivering on the Vision of Bench to Bedside: A Rare Disease Funding Community Collaboration to Develop Effective Therapies for Neurofibromatosis Type 1 Tumors. Cancer Res 2020. [DOI: 10.1158/1538-7445.am2020-2057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The time from identifying a drug target to a new drug approval is often measured in decades and can take even longer for therapies to treat rare diseases. In fact, 95% of rare diseases do not have a specific therapy approved at all. Coordinated efforts to augment the drug development pipeline along with long-term and comprehensive support that enable scientific breakthroughs for rare diseases is possible, but it requires integration across multiple stakeholders. With the recently announced granted acceptance from the FDA to file status of the AstraZeneca and MSD (Merck) application for the MEK inhibitor selumetinib to treat plexiform neurofibromas in children, a major milestone towards the first-ever approved treatment for people with Neurofibromatosis Type 1 (NF1) associated tumors is closer than ever. This study analyzes the coordinated funding efforts of four federal and philanthropic organizations to advance drug development for NF1 associated tumors and discusses how these organizations collaborated and evolved practices to optimize funding and research support. This model could be replicated for other rare diseases if funders are able to take an active, coordinated approach to identify gaps, tools, and infrastructures most needed for that specific disease area.
Citation Format: Salvatore La Rosa, Annette C. Bakker, Vidya Browder, Jaishri O. Blakeley, Sharad K. Verma, Ling M. Wong, Jill Morris, Naba Bora. Delivering on the Vision of Bench to Bedside: A Rare Disease Funding Community Collaboration to Develop Effective Therapies for Neurofibromatosis Type 1 Tumors [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 2057.
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Affiliation(s)
| | | | | | | | | | - Ling M. Wong
- 3National Institute of Neurological Disorders and Stroke, Bethesda, MD
| | - Jill Morris
- 3National Institute of Neurological Disorders and Stroke, Bethesda, MD
| | - Naba Bora
- 4Congressionally Directed Medical Research Program, Fort Detrick, MD
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La Rosa S, Browder V, Bakker AC, Blakeley JO, Verma SK, Wong LM, Morris J, Bora N. Funding community collaboration to develop effective therapies for neurofibromatosis type 1 tumors. EMBO Mol Med 2020; 12:e11656. [PMID: 31793149 PMCID: PMC6949486 DOI: 10.15252/emmm.201911656] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The time from identifying a drug target to a new drug approval is often measured in decades and can take even longer for therapies to treat rare diseases. In fact, 95% of rare diseases do not have a specific therapy approved at all. Coordinated efforts to augment the drug development pipeline along with long-term and comprehensive support that enable scientific breakthroughs for rare diseases are possible, but it requires integration across multiple stakeholders. This article analyzes the coordinated funding efforts of four federal and philanthropic organizations to advance drug development for neurofibromatosis type 1-associated tumors and discusses how these organizations have been collaborating and evolved practices to optimize funding and research support.
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Affiliation(s)
| | | | | | | | | | - Ling M Wong
- National Institute of Neurological Disorders and StrokeBethesdaMDUSA
| | - Jill Morris
- National Institute of Neurological Disorders and StrokeBethesdaMDUSA
| | - Naba Bora
- Congressionally Directed Medical Research ProgramsFort DetrickMDUSA
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Abstract
In recent years, medical foundations have become increasingly influential, and now play an instrumental and integral role in the research and development of their disease area of interest. While some foundations have directly invested in taking drug candidates to the clinic, others have focused on creating specific tools for accelerating the identification and development of effective treatments. Here, we describe a new model, developed by the Children's Tumor Foundation (CTF), by which foundations may play a role in the rare disease ecosystem. On the one hand, the CTF uses its position to build bridges between academic scientists, biotech and pharmaceutical companies, and patients, to accelerate the development of treatments that really matter most to patients. On the other hand, it acts as a niche investor to fund an integrated platform for critical R&D endeavors—including elements such as a patient registry, biobank, and open data platforms—which smoothen the transition from basic discovery to clinical benefit. Currently, the Children's Tumor Foundation is launching a call to top finance experts to collaborate on building an innovative model that will guarantee long‐term sustainability of this integrated platform (Fig 1).
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Allaway RJ, La Rosa S, Guinney J, Gosline SJC. Probing the chemical-biological relationship space with the Drug Target Explorer. J Cheminform 2018; 10:41. [PMID: 30128806 PMCID: PMC6102167 DOI: 10.1186/s13321-018-0297-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 08/16/2018] [Indexed: 01/29/2023] Open
Abstract
Modern phenotypic high-throughput screens (HTS) present several challenges including identifying the target(s) that mediate the effect seen in the screen, characterizing ‘hits’ with a polypharmacologic target profile, and contextualizing screen data within the large space of drugs and screening models. To address these challenges, we developed the Drug–Target Explorer. This tool allows users to query molecules within a database of experimentally-derived and curated compound-target interactions to identify structurally similar molecules and their targets. It enables network-based visualizations of the compound-target interaction space, and incorporates comparisons to publicly-available in vitro HTS datasets. Furthermore, users can identify molecules using a query target or set of targets. The Drug Target Explorer is a multifunctional platform for exploring chemical space as it relates to biological targets, and may be useful at several steps along the drug development pipeline including target discovery, structure–activity relationship, and lead compound identification studies.
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Affiliation(s)
- Robert J Allaway
- Sage Bionetworks, 1100 Fairview Avenue N, Seattle, WA, 98109, USA
| | | | - Justin Guinney
- Sage Bionetworks, 1100 Fairview Avenue N, Seattle, WA, 98109, USA
| | - Sara J C Gosline
- Sage Bionetworks, 1100 Fairview Avenue N, Seattle, WA, 98109, USA.
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Allaway RJ, Gosline SJ, Nievo M, Rosa SL, Bakker A, Guinney J. Abstract 4643: Drug-Target Explorer: An interactive tool for examining chemical-biological interactions. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-4643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Phenotypic high-throughput screens are often utilized in modern oncology drug discovery pipelines. Such screens are conducted with an array of molecules (panels of oncology drugs, drugs for other indications, and compounds with possibly unknown bioactivity), ultimately measuring a biological change within a disease model. For example, a screen might test drugs in NF1 wild-type and mutant cancer cell lines to find molecules that are selectively toxic to NF1 mutant cells. While these screens can yield valuable hits, they also present the challenge of identifying the target(s) that mediate the effect seen in the screen for several reasons. For example, many drugs have a polypharmacologic target profile making it hard to identify which targets are biologically relevant for a given drug. This can cause a single drug to be treated as a specific inhibitor of different targets by different researchers. Furthermore, some libraries contain molecules for which drug-target studies have never been conducted. To address these challenges, we developed an application that enables exploration of the chemical-biological interaction space. Methods: Data from ChEMBL, PubChem, DrugBank, and the Drug-Gene Interaction Database (DGIdb) for over 7000 small molecules were downloaded. Drug-target interaction data points as well as evidence to the contrary were quantified for each interaction. In addition, when quantitative data were obtained, median IC50s were calculated. Each molecule was annotated with a name and chemical structure, and every target was annotated with protein & gene identifiers. To enable exploration of this database, an interactive web interface was developed using the R Shiny platform and cheminformatics R packages (rcdk, fingerprint, webchem).Results: The app enables the end user with a specific query molecule to search a database of experimentally-derived drug-target interactions. The database can be queried using drug names or structures. A similarity parameter allows the user to expand their search to other structurally related molecules. The structure of the query molecule is compared to every database molecule, and structurally similar molecules and targets are presented in interactive tabular and network-based forms for in-depth exploration. The app also performs enrichment analysis on the target lists, and allows the user to evaluate structure-activity relationships for drug response data using publicly-available in vitro datasets. Finally, if a user has a target of interest, they can search for molecules that bind that target and explore the resulting data interactively. Conclusions: This app provides a multifunctional platform for exploring chemical space as it relates to biological targets, and may be useful at several steps along the oncology drug development pipeline including target discovery, structure-activity relationship, and lead identification studies.
Citation Format: Robert J. Allaway, Sara J. Gosline, Marco Nievo, Salvatore La Rosa, Annette Bakker, Justin Guinney. Drug-Target Explorer: An interactive tool for examining chemical-biological interactions [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 4643.
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Allaway R, Angus SP, Beauchamp RL, Blakeley JO, Bott M, Burns SS, Carlstedt A, Chang LS, Chen X, Clapp DW, Desouza PA, Erdin S, Fernandez-Valle C, Guinney J, Gusella JF, Haggarty SJ, Johnson GL, La Rosa S, Morrison H, Petrilli AM, Plotkin SR, Pratap A, Ramesh V, Sciaky N, Stemmer-Rachamimov A, Stuhlmiller TJ, Talkowski ME, Welling DB, Yates CW, Zawistowski JS, Zhao WN. Traditional and systems biology based drug discovery for the rare tumor syndrome neurofibromatosis type 2. PLoS One 2018; 13:e0197350. [PMID: 29897904 PMCID: PMC5999111 DOI: 10.1371/journal.pone.0197350] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 05/01/2018] [Indexed: 11/18/2022] Open
Abstract
Neurofibromatosis 2 (NF2) is a rare tumor suppressor syndrome that manifests with multiple schwannomas and meningiomas. There are no effective drug therapies for these benign tumors and conventional therapies have limited efficacy. Various model systems have been created and several drug targets have been implicated in NF2-driven tumorigenesis based on known effects of the absence of merlin, the product of the NF2 gene. We tested priority compounds based on known biology with traditional dose-concentration studies in meningioma and schwann cell systems. Concurrently, we studied functional kinome and gene expression in these cells pre- and post-treatment to determine merlin deficient molecular phenotypes. Cell viability results showed that three agents (GSK2126458, Panobinostat, CUDC-907) had the greatest activity across schwannoma and meningioma cell systems, but merlin status did not significantly influence response. In vivo, drug effect was tumor specific with meningioma, but not schwannoma, showing response to GSK2126458 and Panobinostat. In culture, changes in both the transcriptome and kinome in response to treatment clustered predominantly based on tumor type. However, there were differences in both gene expression and functional kinome at baseline between meningioma and schwannoma cell systems that may form the basis for future selective therapies. This work has created an openly accessible resource (www.synapse.org/SynodosNF2) of fully characterized isogenic schwannoma and meningioma cell systems as well as a rich data source of kinome and transcriptome data from these assay systems before and after treatment that enables single and combination drug discovery based on molecular phenotype.
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Affiliation(s)
| | | | - Steve P. Angus
- University of North Carolina School of Medicine, Chapel Hill, NC, United States of America
| | - Roberta L. Beauchamp
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States of America
| | - Jaishri O. Blakeley
- Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Marga Bott
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Lake Nona-Orlando, FL, United States of America
| | - Sarah S. Burns
- Center for Childhood Cancer and Blood Diseases, The Research Institute at Nationwide Children's Hospital and Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, United States of America
| | | | - Long-Sheng Chang
- Center for Childhood Cancer and Blood Diseases, The Research Institute at Nationwide Children's Hospital and Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, United States of America
| | - Xin Chen
- University of North Carolina School of Medicine, Chapel Hill, NC, United States of America
| | - D. Wade Clapp
- Indiana University, School of Medicine, Indianapolis, IN, United States of America
| | - Patrick A. Desouza
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States of America
| | - Serkan Erdin
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States of America
| | - Cristina Fernandez-Valle
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Lake Nona-Orlando, FL, United States of America
| | | | - James F. Gusella
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States of America
| | - Stephen J. Haggarty
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States of America
| | - Gary L. Johnson
- University of North Carolina School of Medicine, Chapel Hill, NC, United States of America
| | | | - Helen Morrison
- Leibniz-Institute on Aging–Fritz-Lipmann Institute (FLI), Jena, Germany
| | - Alejandra M. Petrilli
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Lake Nona-Orlando, FL, United States of America
| | - Scott R. Plotkin
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States of America
| | - Abhishek Pratap
- Sage Bionetworks, Seattle, WA, United States of America
- Department of Biomedical Informatics and Medical Education, University of Washington, Seattle, WA, United States of America
| | - Vijaya Ramesh
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States of America
| | - Noah Sciaky
- University of North Carolina School of Medicine, Chapel Hill, NC, United States of America
| | - Anat Stemmer-Rachamimov
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States of America
| | - Tim J. Stuhlmiller
- University of North Carolina School of Medicine, Chapel Hill, NC, United States of America
| | - Michael E. Talkowski
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States of America
| | - D. Bradley Welling
- Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Massachusetts General Hospital and Harvard University, Boston, MA, United States of America
| | - Charles W. Yates
- Indiana University, School of Medicine, Indianapolis, IN, United States of America
| | - Jon S. Zawistowski
- University of North Carolina School of Medicine, Chapel Hill, NC, United States of America
| | - Wen-Ning Zhao
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States of America
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11
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Allaway RJ, Gosline SJC, La Rosa S, Knight P, Bakker A, Guinney J, Le LQ. Cutaneous neurofibromas in the genomics era: current understanding and open questions. Br J Cancer 2018; 118:1539-1548. [PMID: 29695767 PMCID: PMC6008439 DOI: 10.1038/s41416-018-0073-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 02/24/2018] [Accepted: 03/08/2018] [Indexed: 02/07/2023] Open
Abstract
Cutaneous neurofibromas (cNF) are a nearly ubiquitous symptom of neurofibromatosis type 1 (NF1), a disorder with a broad phenotypic spectrum caused by germline mutation of the neurofibromatosis type 1 tumour suppressor gene (NF1). Symptoms of NF1 can include learning disabilities, bone abnormalities and predisposition to tumours such as cNFs, plexiform neurofibromas, malignant peripheral nerve sheath tumours and optic nerve tumours. There are no therapies currently approved for cNFs aside from elective surgery, and the molecular aetiology of cNF remains relatively uncharacterised. Furthermore, whereas the biallelic inactivation of NF1 in neoplastic Schwann cells is critical for cNF formation, it is still unclear which additional genetic, transcriptional, epigenetic, microenvironmental or endocrine changes are important. Significant inroads have been made into cNF understanding, including NF1 genotype–phenotype correlations in NF1 microdeletion patients, the identification of recurring somatic mutations, studies of cNF-invading mast cells and macrophages, and clinical trials of putative therapeutic targets such as mTOR, MEK and c-KIT. Despite these advances, several gaps remain in our knowledge of the associated pathogenesis, which is further hampered by a lack of translationally relevant animal models. Some of these questions may be addressed in part by the adoption of genomic analysis techniques. Understanding the aetiology of cNF at the genomic level may assist in the development of new therapies for cNF, and may also contribute to a greater understanding of NF1/RAS signalling in cancers beyond those associated with NF1. Here, we summarise the present understanding of cNF biology, including the pathogenesis, mutational landscape, contribution of the tumour microenvironment and endocrine signalling, and the historical and current state of clinical trials for cNF. We also highlight open access data resources and potential avenues for future research that leverage recently developed genomics-based methods in cancer research.
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Affiliation(s)
| | | | | | - Pamela Knight
- Children's Tumor Foundation, New York, NY, 10005, USA
| | | | | | - Lu Q Le
- Department of Dermatology, Simmons Comprehensive Cancer Center and the Neurofibromatosis Clinic, UT Southwestern Medical Center, Dallas, TX, 75390, USA.
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12
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Deverka PA, Majumder MA, Villanueva AG, Anderson M, Bakker AC, Bardill J, Boerwinkle E, Bubela T, Evans BJ, Garrison NA, Gibbs RA, Gentleman R, Glazer D, Goldstein MM, Greely H, Harris C, Knoppers BM, Koenig BA, Kohane IS, La Rosa S, Mattison J, O'Donnell CJ, Rai AK, Rehm HL, Rodriguez LL, Shelton R, Simoncelli T, Terry SF, Watson MS, Wilbanks J, Cook-Deegan R, McGuire AL. Creating a data resource: what will it take to build a medical information commons? Genome Med 2017; 9:84. [PMID: 28938910 PMCID: PMC5610432 DOI: 10.1186/s13073-017-0476-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
National and international public-private partnerships, consortia, and government initiatives are underway to collect and share genomic, personal, and healthcare data on a massive scale. Ideally, these efforts will contribute to the creation of a medical information commons (MIC), a comprehensive data resource that is widely available for both research and clinical uses. Stakeholder participation is essential in clarifying goals, deepening understanding of areas of complexity, and addressing long-standing policy concerns such as privacy and security and data ownership. This article describes eight core principles proposed by a diverse group of expert stakeholders to guide the formation of a successful, sustainable MIC. These principles promote formation of an ethically sound, inclusive, participant-centric MIC and provide a framework for advancing the policy response to data-sharing opportunities and challenges.
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Affiliation(s)
- Patricia A Deverka
- American Institutes for Research, Health Care Group, 100 Europa Drive, Suite 315, Chapel Hill, NC, 27517, USA
| | - Mary A Majumder
- Center for Medical Ethics and Health Policy, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Angela G Villanueva
- Center for Medical Ethics and Health Policy, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | | | - Annette C Bakker
- Children's Tumor Foundation, 120 Wall Street, 16th Floor, New York, NY, 10005, USA
| | - Jessica Bardill
- Department of English, Concordia University, 1455 Boulevard de Maisonneuve O, Montreal, QC, H3G 1M8, Canada
| | - Eric Boerwinkle
- Human Genetics Center, School of Public Health, The University of Texas Health Science Center at Houston and Human Genome Sequencing Center, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Tania Bubela
- Faculty of Health Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC, V5A 1S6, Canada
| | - Barbara J Evans
- Law Center and Department of Electrical and Computer Engineering, University of Houston, 4604 Calhoun Road, Houston, TX, 77004, USA
| | - Nanibaa' A Garrison
- Treuman Katz Center for Pediatric Bioethics, Seattle Children's Research Institutes, 1900 Ninth Avenue, Room 677, Seattle, WA, 98101, USA
| | - Richard A Gibbs
- Human Genome Sequencing Center, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | | | - David Glazer
- Verily Life Sciences LLC, 269 E. Grand Avenue, South San Francisco, CA, 94080, USA
| | - Melissa M Goldstein
- Milken Institute School of Public Health, The Georgetown Washington University, 950 New Hampshire Avenue, NW, Second Floor, Washington, DC, 20052, USA
| | - Hank Greely
- Center for Law and the Biosciences, Stanford University, Neukom N361, Stanford, CA, 94305, USA
| | - Crane Harris
- Illumina, Inc., 5200 Research Pl, San Diego, CA, 92122, USA
| | - Bartha M Knoppers
- Centre of Genomics and Policy, McGill University, Montreal, 740 Avenue Drive Penfield, Suite 5200, Montreal, Quebec, H3A 0G1, Canada
| | - Barbara A Koenig
- Institute for Health and Aging, and Department of Anthropology, History, and Social Medicine, University of California San Francisco, San Francisco, CA, 94143, USA
| | - Isaac S Kohane
- Department of Biomedical Informatics, Harvard Medical School, 10 Shattuck Street, Boston, MA, 02115, USA
| | - Salvatore La Rosa
- Children's Tumor Foundation, 120 Wall Street, 16th Floor, New York, NY, 10005, USA
| | - John Mattison
- Kaiser Permanente, University of California San Diego and Singularity University, 4965 Maynard Street, San Diego, CA, 92122, USA
| | - Christopher J O'Donnell
- Center for Population Genomics, Boston Veterans Administration Healthcare, 73 Mount Wayte Avenue, Framingham, MA, 01702, USA
| | - Arti K Rai
- Duke University School of Law; Duke Innovation and Entrepreneurship Initiative, 210 Science Drive, Box 90360, Durham, NC, 27708, USA
| | - Heidi L Rehm
- Harvard Medical School, Brigham and Women's Hospital and The Broad Institute of MIT and Harvard, 65 Landsdowne Street, Cambridge, MA, 02139, USA
| | - Laura L Rodriguez
- Division of Policy, Communications, and Education, National Human Genome Research Institute 31 Center Drive, Room 4B09, Bethesda, MD, 20892, USA
| | - Robert Shelton
- Private Access, Inc, 19800 MacArthur Boulevard, Suite 300, Irvine, CA, 92612, USA
| | - Tania Simoncelli
- Broad Institute of Harvard and MIT, 415 Main Street, Cambridge, MA, 02142, USA
| | - Sharon F Terry
- Genetic Alliance, 4301 Connecticut Avenue, NW, Suite 404, Washington, DC, 20008, USA
| | - Michael S Watson
- American College of Medical Genetics and Genomics, 7101 Wisconsin Avenue, Suite 1101, Bethesda, MD, 20814, USA
| | - John Wilbanks
- Sage Bionetworks, 1100 Fairview Avenue N., Mailstop M1-C108, Seattle, WA, 98109, USA
| | - Robert Cook-Deegan
- School for the Future of Innovation in Society and Consortium for Science, Policy and Outcomes, Arizona State University, and Senior Fellow, FasterCures, a Center of the Milken Institute, 1834 Connecticut Avenue, NW, Washington, DC, 20009, USA
| | - Amy L McGuire
- Center for Medical Ethics and Health Policy, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
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13
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Gosline SJC, Knight P, Yu T, Prasad N, Jones A, Shrestha S, Boone B, Levy SE, Link AJ, Galassie AC, Weinberg H, Friend S, La Rosa S, Guinney J, Bakker A. Abstract 772: The molecular landscape of dermal neurofibromatosis. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Neurofibromatosis type I (NF1) is a genetic disorder that disrupts neurological tissue growth and can lead to a diverse set of symptoms including systematic growth of benign tumors, learning disorders and bone deformities. It is a rare disease occurring in only 1 in 3,000 people worldwide. While the disease has been linked to loss of function in the NF1 gene - a known tumor suppressor - there is a high degree of phenotypic diversity in the NF1 patient population, making it difficult to identify the underlying cause of the disease and treat it effectively. In this work we seek to improve overall knowledge of dermal NF1 through global molecular characterization of the disease.
Methods: We have collected four dermal neurofibromas and peripheral blood from each of 11 NF1 patients. We analyzed each sample using (1) Whole genome sequencing (WGS) on the Illumina HiSeq X platform, (2) Illumina OMNI2.5 Arrays (3) RNA-Sequencing on an Illumina HiSeq v4 machine and (4) iTRAQ-labeled proteomics. WGS data for both tumor and blood samples from each patient were used to identify patient-specific germ-line mutations as well as tumor-specific somatic mutations in each sample. Single nucleotide polymorphisms identified by the OMNI Arrays were used to identify copy number alterations in both blood and tumor samples. RNA-Seq data and proteomics data were mapped to transcripts and proteins respectively.
Results: Preliminary analysis of this data illustrates a diverse genomic landscape of NF1. Hierarchical clustering of copy number alterations largely show samples clustering by tissue, suggesting that most copy number alterations are somatic and not shared across the germline. However, there are two patients that show germline copy number alterations, including one patient with loss in the NF1 region. WGS analysis suggests similar diversity with each patient possessing a distinct combination of germline and somatic mutations of NF1 and other cancer-related genes. Cluster analysis of the RNA-Seq data shows no patient-specific clusters, suggesting that that each tumor executes a unique transcriptional program.
Conclusion: This work represents a first-ever attempt to profile the diversity of dermal neurofibromatosis at a molecular level. Preliminary analysis of the data underscores the complexity of this disease and explains, in part, previous difficulty in identifying effective treatments. Ongoing work includes expanding the analysis to include more patient samples and other types of NF1-derived tumors. As an orphan disease, NF1 has been poorly characterized compared to more common cancers. To rectify this, the Children's Tumor Foundation and Sage Bionetworks are collaborating to make NF1 data available to the public to accelerate research and the drug discovery pipeline. We expect that this data will be a resource for other NF1 researchers to assist in the study of this disease at the molecular level. All data and preliminary results are publicly available at http://www.synapse.org/dermalNF
Citation Format: Sara JC Gosline, Pamela Knight, Thomas Yu, Nripesh Prasad, Angela Jones, Shristi Shrestha, Braden Boone, Shawn E. Levy, Andrew J. Link, Allison C. Galassie, Hubert Weinberg, Stephen Friend, Salvatore La Rosa, Justin Guinney, Annette Bakker. The molecular landscape of dermal neurofibromatosis. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 772.
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14
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Bakker AC, La Rosa S, Sherman LS, Knight P, Lee H, Pancza P, Nievo M. Neurofibromatosis as a gateway to better treatment for a variety of malignancies. Prog Neurobiol 2016; 152:149-165. [PMID: 26854064 DOI: 10.1016/j.pneurobio.2016.01.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 01/25/2016] [Accepted: 01/25/2016] [Indexed: 12/23/2022]
Abstract
The neurofibromatoses (NF) are a group of rare genetic disorders that can affect all races equally at an incidence from 1:3000 (NF1) to a log unit lower for NF2 and schwannomatosis. Since the research community is reporting an increasing number of malignant cancers that carry mutations in the NF genes, the general interest of both the research and pharma community is increasing and the authors saw an opportunity to present a novel, fresh approach to drug discovery in NF. The aim of the paper is to challenge the current drug discovery approach to NF, whereby existing targeted therapies that are either in the clinic or on the market for other disease indications are repurposed for NF. We offer a suggestion for an alternative drug discovery approach. In the new approach, selective and tolerable targeted therapies would be developed for NF and later expanded to patients with more complex diseases such as malignant cancer in which the NF downstream pathways are deregulated. The Children's Tumor Foundation, together with some other major NF funders, is playing a key role in funding critical initiatives that will accelerate the development of better targeted therapies for NF patients, while these novel, innovative treatments could potentially be beneficial to molecularly characterized cancer patients in which NF mutations have been identified.
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Affiliation(s)
- Annette C Bakker
- Children's Tumor Foundation, 120, Wall Street, 16th Floor, New York 10005, United States
| | - Salvatore La Rosa
- Children's Tumor Foundation, 120, Wall Street, 16th Floor, New York 10005, United States
| | - Larry S Sherman
- Division of Neuroscience, Oregon National Primate Research Center, Oregon Health & Science University, 505 NW 185th Avenue, Beaverton, OR 97006, United States
| | - Pamela Knight
- Children's Tumor Foundation, 120, Wall Street, 16th Floor, New York 10005, United States
| | - Hyerim Lee
- Children's Tumor Foundation, 120, Wall Street, 16th Floor, New York 10005, United States
| | - Patrice Pancza
- Children's Tumor Foundation, 120, Wall Street, 16th Floor, New York 10005, United States
| | - Marco Nievo
- Children's Tumor Foundation, 120, Wall Street, 16th Floor, New York 10005, United States.
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15
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Pesci E, Bettinetti L, Fanti P, Galietta LJV, La Rosa S, Magnoni L, Pedemonte N, Sardone GL, Maccari L. Novel Hits in the Correction of ΔF508-Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Protein: Synthesis, Pharmacological, and ADME Evaluation of Tetrahydropyrido[4,3-d]pyrimidines for the Potential Treatment of Cystic Fibrosis. J Med Chem 2015; 58:9697-711. [PMID: 26561003 DOI: 10.1021/acs.jmedchem.5b00771] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cystic fibrosis (CF) is a lethal genetic disease caused by mutations of the gene encoding the cystic fibrosis transmembrane conductance regulator (CFTR) with a prevalence of the ΔF508 mutation. Whereas the detailed mechanisms underlying disease have yet to be fully elucidated, recent breakthroughs in clinical trials have demonstrated that CFTR dysfunction can be corrected by drug-like molecules. On the basis of this success, a screening campaign was carried out, seeking new drug-like compounds able to rescue ΔF508-CFTR that led to the discovery of a novel series of correctors based on a tetrahydropyrido[4,3-d]pyrimidine core. These molecules proved to be soluble, cell-permeable, and active in a disease relevant functional-assay. The series was then further optimized with emphasis on biological data from multiple cell systems while keeping physicochemical properties under strict control. The pharmacological and ADME profile of this corrector series hold promise for the development of more efficacious compounds to be explored for therapeutic use in CF.
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Affiliation(s)
- Elisabetta Pesci
- Siena Biotech S.p.A. , Strada del Petriccio e Belriguardo 35, Siena 53100, Italy
| | - Laura Bettinetti
- Siena Biotech S.p.A. , Strada del Petriccio e Belriguardo 35, Siena 53100, Italy
| | - Paola Fanti
- Siena Biotech S.p.A. , Strada del Petriccio e Belriguardo 35, Siena 53100, Italy
| | | | - Salvatore La Rosa
- Siena Biotech S.p.A. , Strada del Petriccio e Belriguardo 35, Siena 53100, Italy
| | - Letizia Magnoni
- Siena Biotech S.p.A. , Strada del Petriccio e Belriguardo 35, Siena 53100, Italy
| | | | - Gian Luca Sardone
- Siena Biotech S.p.A. , Strada del Petriccio e Belriguardo 35, Siena 53100, Italy
| | - Laura Maccari
- Siena Biotech S.p.A. , Strada del Petriccio e Belriguardo 35, Siena 53100, Italy
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16
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Rosa SL, Knight P, Pancza P, Scobie K, Bakker A. Abstract A32: Gaps and opportunities for RASopathies: Use of new tools to make the right choice in target and compound selection. Mol Cancer Res 2015. [DOI: 10.1158/1557-3125.rasonc14-a32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
“RASopathies” are a class of developmental disorders caused by germline mutations in genes that encode protein components of the Ras/MAPK pathway. Each syndrome exhibits different phenotypic features, though there are many overlapping features among syndromes, including characteristic facial features, cardiac defects, cutaneous abnormalities, autism, learning disabilities and a predisposition to malignancies. Neurofibromatosis type 1 (NF1) has been more extensively studied than the other syndromes and today 11 clinical trials are ongoing for NF1 versus 3 in all other RASopathies.
In the last couple of years a few studies were published which directly connected the molecular mechanisms of these diseases to each other, creating a new opportunity to cross-validate the effects of modulating the RAS pathway at different stages and with different tools, and providing new overlapping strategies which could also benefit less studied syndromes. We recently acquired in-house capabilities to access MetaCore and Integrity databases to help in the process of data mining and compound selection. We applied these capabilities in a multi-tiered approach to compare NF1 with Noonan Syndrome (NS). First, we analyzed the molecular profiles of these two RASopathies using MetaCore and zeroed in on a well-known common molecular target, MEK. Among the large number of MEK inhibitors now in development, an analysis of these agents has been made with the use of the database to compare the different chemical classes of inhibitors and analyse properties, opportunities and redundancies among these compounds. The same approach will be then applied to try to identify a novel drug target in common in NF1 and NS. For this new target, an analysis of available drugs will be made to try to identify the best candidate/s which could be explored for in vitro or in vivo testing or as a proof-of-concept. Combining the capabilities of bioinformatic analysis and chemical analysis, a more informed drug choice for screening and/or preclinical testing can be done on the basis of detailed information on drugs and interconnections of targets/pathways. This approach, taking into account the various aspects of a particular model or disease, will attempt to accelerate research by allowing the selection of the most suitable compounds for a particular experiment, allowing for more informed choices.
Citation Format: Salvatore La Rosa, Pamela Knight, Patrice Pancza, Kimberly Scobie, Annette Bakker. Gaps and opportunities for RASopathies: Use of new tools to make the right choice in target and compound selection. [abstract]. In: Proceedings of the AACR Special Conference on RAS Oncogenes: From Biology to Therapy; Feb 24-27, 2014; Lake Buena Vista, FL. Philadelphia (PA): AACR; Mol Cancer Res 2014;12(12 Suppl):Abstract nr A32. doi: 10.1158/1557-3125.RASONC14-A32
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Mellini P, De Vita D, Di Rienzo B, La Rosa S, Padova A, Scipione L, Tortorella S, Friggeri L. Efficient Synthesis of 3,5-Dicarbamoyl-1,4-dihydropyridines from Pyridinium Salts: Key Molecules in Understanding NAD(P)+/NAD(P)H Pathways. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Paolo Mellini
- Chimica e Tecnologie del Farmaco; Sapienza University of Rome; P.le Aldo Moro 5 00185 Rome Italy
| | - Daniela De Vita
- Chimica e Tecnologie del Farmaco; Sapienza University of Rome; P.le Aldo Moro 5 00185 Rome Italy
| | - Barbara Di Rienzo
- Chimica e Tecnologie del Farmaco; Sapienza University of Rome; P.le Aldo Moro 5 00185 Rome Italy
| | - Salvatore La Rosa
- Siena Biotech SpA; Strada del Petriccio e Belriguardo 35 53100 Siena Italy
| | - Alessandro Padova
- Siena Biotech SpA; Strada del Petriccio e Belriguardo 35 53100 Siena Italy
| | - Luigi Scipione
- Chimica e Tecnologie del Farmaco; Sapienza University of Rome; P.le Aldo Moro 5 00185 Rome Italy
| | - Silvano Tortorella
- Chimica e Tecnologie del Farmaco; Sapienza University of Rome; P.le Aldo Moro 5 00185 Rome Italy
| | - Laura Friggeri
- Chimica e Tecnologie del Farmaco; Sapienza University of Rome; P.le Aldo Moro 5 00185 Rome Italy
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18
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La Rosa S, Benicchi T, Bettinetti L, Ceccarelli I, Diodato E, Federico C, Fiengo P, Franceschini D, Gokce O, Heitz F, Lazzeroni G, Luthi-Carter R, Magnoni L, Miragliotta V, Scali C, Valacchi M. Fused 3-Hydroxy-3-trifluoromethylpyrazoles Inhibit Mutant Huntingtin Toxicity. ACS Med Chem Lett 2013; 4:979-84. [PMID: 24900595 PMCID: PMC4027250 DOI: 10.1021/ml400251g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 08/08/2013] [Indexed: 11/30/2022] Open
Abstract
Here, we describe the selection and optimization of a chemical series active in both a full-length and a fragment-based Huntington's disease (HD) assay. Twenty-four thousand small molecules were screened in a phenotypic HD assay, identifying a series of compounds bearing a 3-hydroxy-3-trifluoromethylpyrazole moiety as able to revert the toxicity induced by full-length mutant Htt by up to 50%. A chemical exploration around the series led to the identification of compound 4f, which demonstrated to be active in a Htt171-82Q rat primary striatal neuron assay and a PC12-Exon-1 based assay. This compound was selected for testing in R6/2 mice, in which it was well-tolerated and showed a positive effect on body weight and a positive trend in preventing ventricular volume enlargment. These studies provide strong rationale for further testing the potential benefits of 3-hydroxy-3-trifluoromethylpyrazoles in treating HD.
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Affiliation(s)
- Salvatore La Rosa
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Tiziana Benicchi
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Laura Bettinetti
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Ilaria Ceccarelli
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Enrica Diodato
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Cesare Federico
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Pasquale Fiengo
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Davide Franceschini
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Ozgun Gokce
- Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL),
Lausanne, Switzerland
| | - Freddy Heitz
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Giulia Lazzeroni
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Ruth Luthi-Carter
- Brain Mind Institute, École Polytechnique Fédérale de Lausanne (EPFL),
Lausanne, Switzerland
| | - Letizia Magnoni
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | | | - Carla Scali
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Michela Valacchi
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
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Lazzeroni G, Benicchi T, Heitz F, Magnoni L, Diamanti D, Rossini L, Massai L, Federico C, Fecke W, Caricasole A, La Rosa S, Porcari V. A Phenotypic Screening Assay for Modulators of Huntingtin-Induced Transcriptional Dysregulation. ACTA ACUST UNITED AC 2013; 18:984-96. [DOI: 10.1177/1087057113484802] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Huntington’s Disease is a rare neurodegenerative disease caused by an abnormal expansion of CAG repeats encoding polyglutamine in the first exon of the huntingtin gene. N-terminal fragments containing polyglutamine (polyQ) sequences aggregate and can bind to cellular proteins, resulting in several pathophysiological consequences for affected neurons such as changes in gene transcription. One transcriptional pathway that has been implicated in HD pathogenesis is the CREB binding protein (CBP)/cAMP responsive element binding (CREB) pathway. We developed a phenotypic assay to screen for compounds that can reverse the transcriptional dysregulation of the pathway caused by induced mutated huntingtin protein (µHtt). 293/T-REx cells were stably co-transfected with an inducible full-length mutated huntingtin gene containing 138 glutamine repeats and with a reporter gene under control of the cAMP responsive element (CRE). One clone, which showed reversible inhibition of µHtt-induced reporter activity upon treatment with the neuroprotective Rho kinase inhibitor Y27632, was used for the development of a high-throughput phenotypic assay suitable for a primary screening campaign, which was performed on a library of 24,000 compounds. Several hit compounds were identified and validated further in a cell viability adenosine triphosphate assay. The assay has the potential for finding new drug candidates for the treatment of HD.
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Affiliation(s)
| | | | - Freddy Heitz
- Biomolecular Screening Unit, Siena Biotech Spa, Siena, Italy
- GenKyotex SA, Geneva, Switzerland
| | | | | | - Lara Rossini
- Department of Pharmacology, Siena Biotech Spa, Siena, Italy
| | - Luisa Massai
- Department of Pharmacology, Siena Biotech Spa, Siena, Italy
| | - Cesare Federico
- Department of Medicinal Chemistry, Siena Biotech Spa, Siena, Italy
| | - Wolfgang Fecke
- UCB Celltech, Slough, United Kingdom
- Hansabiomed OU, Tallinn, Estonia
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Lu XQ, Mahadevan A, Mathiowitz G, Lin PJP, Thomas A, Kasper EM, Floyd SR, Holupka E, La Rosa S, Wang F, Stevenson MA. Frameless angiogram-based stereotactic radiosurgery for treatment of arteriovenous malformations. Int J Radiat Oncol Biol Phys 2012; 84:274-82. [PMID: 22284685 DOI: 10.1016/j.ijrobp.2011.10.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Revised: 10/24/2011] [Accepted: 10/25/2011] [Indexed: 11/19/2022]
Abstract
PURPOSE Stereotactic radiosurgery (SRS) is an effective alternative to microsurgical resection or embolization for definitive treatment of arteriovenous malformations (AVMs). Digital subtraction angiography (DSA) is the gold standard for pretreatment diagnosis and characterization of vascular anatomy, but requires rigid frame (skull) immobilization when used in combination with SRS. With the advent of advanced proton and image-guided photon delivery systems, SRS treatment is increasingly migrating to frameless platforms, which are incompatible with frame-based DSA. Without DSA as the primary image, target definition may be less than optimal, in some cases precluding the ability to treat with a frameless system. This article reports a novel solution. METHODS AND MATERIALS Fiducial markers are implanted into the patient's skull before angiography. Angiography is performed according to the standard clinical protocol, but, in contrast to the previous practice, without the rigid frame. Separate images of a specially designed localizer box are subsequently obtained. A target volume projected on DSA can be transferred to the localizer system in three dimensions, and in turn be transferred to multiple CT slices using the implanted fiducials. Combined with other imaging modalities, this "virtual frame" approach yields a highly precise treatment plan that can be delivered by frameless SRS technologies. RESULTS Phantom measurements for point and volume targets have been performed. The overall uncertainty of placing a point target to CT is 0.4 mm. For volume targets, deviation of the transformed contour from the target CT image is within 0.6 mm. The algorithm and software are robust. The method has been applied clinically, with reliable results. CONCLUSIONS A novel and reproducible method for frameless SRS of AVMs has been developed that enables the use of DSA without the requirement for rigid immobilization. Multiple pairs of DSA can be used for better conformality. Further improvement, including using nonimplanted fiducials, is potentially feasible.
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Affiliation(s)
- Xing-Qi Lu
- Department of Radiation Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.
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Lozzi L, Picozzi P, Zema N, Grazioli C, Crossley A, Northover P, La Rosa S, Paparazzo E. A multitechnique study of archaeological bronzes: part II. SURF INTERFACE ANAL 2010. [DOI: 10.1002/sia.3642] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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22
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Ghiron C, Haydar SN, Aschmies S, Bothmann H, Castaldo C, Cocconcelli G, Comery TA, Di L, Dunlop J, Lock T, Kramer A, Kowal D, Jow F, Grauer S, Harrison B, La Rosa S, Maccari L, Marquis KL, Micco I, Nencini A, Quinn J, Robichaud AJ, Roncarati R, Scali C, Terstappen GC, Turlizzi E, Valacchi M, Varrone M, Zanaletti R, Zanelli U. Novel Alpha-7 Nicotinic Acetylcholine Receptor Agonists Containing a Urea Moiety: Identification and Characterization of the Potent, Selective, and Orally Efficacious Agonist 1-[6-(4-Fluorophenyl)pyridin-3-yl]-3-(4-piperidin-1-ylbutyl) Urea (SEN34625/WYE-103914). J Med Chem 2010; 53:4379-89. [DOI: 10.1021/jm901692q] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chiara Ghiron
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Simon N. Haydar
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - Suzan Aschmies
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - Hendrick Bothmann
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Cristiana Castaldo
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | | | - Thomas A. Comery
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - Li Di
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - John Dunlop
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - Tim Lock
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - Angela Kramer
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - Dianne Kowal
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - Flora Jow
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - Steve Grauer
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - Boyd Harrison
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - Salvatore La Rosa
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Laura Maccari
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Karen L. Marquis
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - Iolanda Micco
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Arianna Nencini
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Joanna Quinn
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Albert J. Robichaud
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, New Jersey 08543-8000
| | - Renza Roncarati
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Carla Scali
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Georg C. Terstappen
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Elisa Turlizzi
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Michela Valacchi
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Maurizio Varrone
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Riccardo Zanaletti
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
| | - Ugo Zanelli
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy
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23
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Haydar SN, Ghiron C, Bettinetti L, Bothmann H, Comery TA, Dunlop J, La Rosa S, Micco I, Pollastrini M, Quinn J, Roncarati R, Scali C, Valacchi M, Varrone M, Zanaletti R. SAR and biological evaluation of SEN12333/WAY-317538: Novel alpha 7 nicotinic acetylcholine receptor agonist. Bioorg Med Chem 2009; 17:5247-58. [PMID: 19515567 DOI: 10.1016/j.bmc.2009.05.040] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2009] [Revised: 05/08/2009] [Accepted: 05/14/2009] [Indexed: 10/20/2022]
Abstract
Alpha 7 nicotinic acetylcholine receptor (alpha(7) nAChR) agonists are promising therapeutic candidates for the treatment of cognitive impairment associated with a variety of disorders including Alzheimer's disease and schizophrenia. Alpha 7 nAChRs are expressed in brain regions associated with cognitive function, regulate cholinergic neurotransmission and have been shown to be down regulated in both schizophrenia and Alzheimer's disease. Herein we report a novel, potent small molecule agonist of the alpha 7 nAChR, SEN12333/WAY-317538. This compound is a selective agonist of the alpha(7) nAChR with excellent in vitro and in vivo profiles, excellent brain penetration and oral bioavailability, and demonstrates in vivo efficacy in multiple behavioural cognition models. The SAR and biological evaluation of this series of compounds are discussed.
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Affiliation(s)
- Simon N Haydar
- Chemical Sciences and Neuroscience Discovery Research, Wyeth Research, CN 8000, Princeton, NJ 08543-8000, USA.
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Rancati F, Bromidge SM, Del Sordo S, La Rosa S, Parini C, Gagliardi S. Synthesis of 7-Substituted-(2,3-dihydro-1,4-benzodioxin-5-yl)-piperazine. SYNTHETIC COMMUN 2008. [DOI: 10.1080/00397910802219148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | - Steven M. Bromidge
- b Psychiatry Center of Excellence for Drug Discovery, GlaxoSmithKline, Medicinal Research Centre , Verona, Italy
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25
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Heitz F, La Rosa S, Gonzalez-Couto E, Gaviraghi G, Terstappen GC. Drug discovery and development for Huntington's disease - an orphan indication with high medical need. IDrugs 2008; 11:653-660. [PMID: 18763216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Huntington's disease (HD) is a rare neurodegenerative disorder that progressively destroys the mental capacity and motor control of patients. This loss of motor control results in abnormal body movements (chorea) - the hallmark of HD. Given that no disease-modifying therapy for HD exists and that available symptomatic treatments are not highly efficacious, the medical need for this 'orphan' disease remains high. The number of compounds that are undergoing discovery and development for the treatment of HD has increased significantly in recent years, spurred by legislative incentives for orphan drug development and by support from non-profit foundations. Thus, hope exists for patients with HD that efficacious medicines will become available.
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Affiliation(s)
- Freddy Heitz
- Siena Biotech SpA, Strada del Petriccio e Belriguardo 35, 53100 Siena, Italy.
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26
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Northover P, Crossley A, Grazioli C, Zema N, La Rosa S, Lozzi L, Picozzi P, Paparazzo E. A multitechnique study of archeological bronzes. SURF INTERFACE ANAL 2008. [DOI: 10.1002/sia.2647] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abstract
Today’s society requires companies to act more and more effectively for the general good, by respecting human rights and the environment. Innovative and enlightened companies try to meet this need through the adoption of several initiatives. Accordingly, the International Standard Organisation is now working on attempts to unify these initiatives and to formulate an internationally recognised standard, providing guidance to companies on social responsibility. Currently the SA8000 international standard is the most often used tool – based on Corporate Social Responsibility (CSR) philosophy – which guarantees the respect of fundamental workers’ rights. Since 2003, Italy holds the world record for its number of SA8000 certified companies. This paper discusses the findings of a two‐stage survey of the Italian SA8000 certified companies carried out over the last two years. The focus of the survey is on both reasons and effects of the implementation of SA8000 standard. In the first stage the rate of response was very high while in the second stage it was satisfactory. The results provide a clear picture of the companies and their degree of achivement and awareness of the fundamental principles of human resource management. A section of the survey deals with some issues related to the Public Sector.
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28
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Gibson CL, La Rosa S, Ohta K, Boyle PH, Leurquin F, Lemaçon A, Suckling CJ. The synthesis of 7-deazaguanines as potential inhibitors of guanosine triphosphate cyclohydrolase I. Tetrahedron 2004. [DOI: 10.1016/j.tet.2003.11.030] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
The development of a versatile solid phase synthesis of bicyclic polyaza heterocycles including pteridines, purines, and deazapurines is described. The strategy comprises the linking of a pre-formed pyrimidine through a thioether at the 2 or 4 position to a polystyrene resin, the cyclisation of the second ring, and the direct or oxidative cleavage of the product from the resin by nucleophilic substitution. This provides not only for substituent variation in the second ring, but also for variation at the site of cleavage. Limitations in the scope of the methodology are set by the intrinsic reactivity of pyrimidinyl 2- or 4-thioethers which, whilst undergoing ready nitration at C5, are surprisingly difficult to alkylate and acylate.
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Affiliation(s)
- Colin L Gibson
- Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, Scotland
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Salerno G, De Franco A, La Rosa S, Calistro V. Malabsorption syndromes. Rays 2002; 27:19-34. [PMID: 12696272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Malabsorption syndromes are divided according to the underlying cause: maldigestion; bacterial contamination; mucosal abnormalities. One of the main causes of maldigestion are surgical resections. Malabsorption from bacterial contamination is due to a lower effectiveness of one or more of the factors that normally inhibit the growth of pathogens. The most common malabsorption syndrome from mucosal abnormalities is celiac disease for which, with small bowel enteroclysis a specific radiographic pattern has been identified. The gold standard in the diagnosis of diseases associated to malabsorption is represented by mucosal biopsy and histology though some patterns are similar and create difficulties in the differential diagnosis. Among radiologic examinations, small bowel enteroclysis is highly predictive; hopefully, novel diagnostic methods will support radiology.
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Affiliation(s)
- Giuseppe Salerno
- Istituto di Radiologia, Università Cattolica del S. Cuore, Policlinico A. Gemelli, Largo A. Gemelli 8, 00168 Roma, Italy
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Arruda WO, Brito Filho D, Rosa SL, Fontoura PS, Cardoso MDA. Factors affecting diazepam availability from intravenous admixture solutions. Arq Neuropsiquiatr 1989; 47:291-4. [PMID: 2619606 DOI: 10.1590/s0004-282x1989000300007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The authors studied the availability of parenteral solutions of diazepam in glass bottles or polyethylene (PE) containers during infusion through polyvinyl chloride (PVC) administration sets. Diazepam solutions in concentration of 1000 mg/500 ml in 0.9% sodium chloride (NS) and 5% glucose (G5W) injection were infused at a flow rate of 30 ml/h, and samples were taken from the bottle and at the end of the administration set, till 12 hours of infusion. The samples were tested in triplicate using ultraviolet spectrophotometry. The greatest loss of diazepam was observed in all solutions at 30 minutes of infusion (63.5% G5W glass, 60.5% NS glass, 55% G5W PE and 58% NS PE from the original concentration of 200 micrograms/ml). The diazepam concentrations in the containers did not significantly changed. The loss of diazepam from solutions infused through PVC administration sets should be kept in mind in severe clinical situations as status epilepticus, tetanus and eclampsia.
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Affiliation(s)
- W O Arruda
- Intensive Care Unit, Universidade Federal do Paraná, Brasil
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