1
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Wang XQD, Cameron CJF, Segal D, Paquette D, Blanchette M, Dostie J. Profiling Chromatin Landscape at High Resolution and Throughput with 2C-ChIP. Methods Mol Biol 2021; 2157:127-157. [PMID: 32820402 DOI: 10.1007/978-1-0716-0664-3_8] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Chromatin immunoprecipitation (ChIP) is used to probe the presence of proteins and/or their posttranslational modifications on genomic DNA. This method is often used alongside chromosome conformation capture approaches to obtain a better-rounded view of the functional relationship between chromatin architecture and its landscape. Since the inception of ChIP, its protocol has been modified to improve speed, sensitivity, and specificity. Combining ChIP with deep sequencing has recently improved its throughput and made genome-wide profiling possible. However, genome-wide analysis is not always the best option, particularly when many samples are required to study a given genomic region or when quantitative data is desired. We recently developed carbon copy-ChIP (2C-ChIP), a new form of the high-throughput ChIP analysis method ideally suited for these types of studies. 2C-ChIP applies ligation-mediated amplification (LMA) followed by deep sequencing to quantitatively detect specified genomic regions in ChIP samples. Here, we describe the generation of 2C-ChIP libraries and computational processing of the resulting sequencing data.
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Affiliation(s)
- Xue Qing David Wang
- Department of Biochemistry and Rosalind and Morris Goodman Cancer Research Center, McGill University, Montréal, QC, Canada
| | - Christopher J F Cameron
- Department of Biochemistry and Rosalind and Morris Goodman Cancer Research Center, McGill University, Montréal, QC, Canada
- School of Computer Science, McGill University, Montréal, QC, Canada
| | - Dana Segal
- Department of Biochemistry and Rosalind and Morris Goodman Cancer Research Center, McGill University, Montréal, QC, Canada
| | - Denis Paquette
- Department of Biochemistry and Rosalind and Morris Goodman Cancer Research Center, McGill University, Montréal, QC, Canada
| | | | - Josée Dostie
- Department of Biochemistry and Rosalind and Morris Goodman Cancer Research Center, McGill University, Montréal, QC, Canada.
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2
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Ramilowski JA, Yip CW, Agrawal S, Chang JC, Ciani Y, Kulakovskiy IV, Mendez M, Ooi JLC, Ouyang JF, Parkinson N, Petri A, Roos L, Severin J, Yasuzawa K, Abugessaisa I, Akalin A, Antonov IV, Arner E, Bonetti A, Bono H, Borsari B, Brombacher F, Cameron CJ, Cannistraci CV, Cardenas R, Cardon M, Chang H, Dostie J, Ducoli L, Favorov A, Fort A, Garrido D, Gil N, Gimenez J, Guler R, Handoko L, Harshbarger J, Hasegawa A, Hasegawa Y, Hashimoto K, Hayatsu N, Heutink P, Hirose T, Imada EL, Itoh M, Kaczkowski B, Kanhere A, Kawabata E, Kawaji H, Kawashima T, Kelly ST, Kojima M, Kondo N, Koseki H, Kouno T, Kratz A, Kurowska-Stolarska M, Kwon ATJ, Leek J, Lennartsson A, Lizio M, López-Redondo F, Luginbühl J, Maeda S, Makeev VJ, Marchionni L, Medvedeva YA, Minoda A, Müller F, Muñoz-Aguirre M, Murata M, Nishiyori H, Nitta KR, Noguchi S, Noro Y, Nurtdinov R, Okazaki Y, Orlando V, Paquette D, Parr CJ, Rackham OJ, Rizzu P, Martinez DFS, Sandelin A, Sanjana P, Semple CA, Shibayama Y, Sivaraman DM, Suzuki T, Szumowski SC, Tagami M, Taylor MS, Terao C, Thodberg M, Thongjuea S, Tripathi V, Ulitsky I, Verardo R, Vorontsov IE, Yamamoto C, Young RS, Baillie JK, Forrest AR, Guigó R, Hoffman MM, Hon CC, Kasukawa T, Kauppinen S, Kere J, Lenhard B, Schneider C, Suzuki H, Yagi K, de Hoon MJ, Shin JW, Carninci P. Corrigendum: Functional annotation of human long noncoding RNAs via molecular phenotyping. Genome Res 2020. [DOI: 10.1101/gr.270330.120] [Citation(s) in RCA: 1] [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: 11/24/2022]
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3
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Ramilowski JA, Yip CW, Agrawal S, Chang JC, Ciani Y, Kulakovskiy IV, Mendez M, Ooi JLC, Ouyang JF, Parkinson N, Petri A, Roos L, Severin J, Yasuzawa K, Abugessaisa I, Akalin A, Antonov IV, Arner E, Bonetti A, Bono H, Borsari B, Brombacher F, Cameron CJF, Cannistraci CV, Cardenas R, Cardon M, Chang H, Dostie J, Ducoli L, Favorov A, Fort A, Garrido D, Gil N, Gimenez J, Guler R, Handoko L, Harshbarger J, Hasegawa A, Hasegawa Y, Hashimoto K, Hayatsu N, Heutink P, Hirose T, Imada EL, Itoh M, Kaczkowski B, Kanhere A, Kawabata E, Kawaji H, Kawashima T, Kelly ST, Kojima M, Kondo N, Koseki H, Kouno T, Kratz A, Kurowska-Stolarska M, Kwon ATJ, Leek J, Lennartsson A, Lizio M, López-Redondo F, Luginbühl J, Maeda S, Makeev VJ, Marchionni L, Medvedeva YA, Minoda A, Müller F, Muñoz-Aguirre M, Murata M, Nishiyori H, Nitta KR, Noguchi S, Noro Y, Nurtdinov R, Okazaki Y, Orlando V, Paquette D, Parr CJC, Rackham OJL, Rizzu P, Sánchez Martinez DF, Sandelin A, Sanjana P, Semple CAM, Shibayama Y, Sivaraman DM, Suzuki T, Szumowski SC, Tagami M, Taylor MS, Terao C, Thodberg M, Thongjuea S, Tripathi V, Ulitsky I, Verardo R, Vorontsov IE, Yamamoto C, Young RS, Baillie JK, Forrest ARR, Guigó R, Hoffman MM, Hon CC, Kasukawa T, Kauppinen S, Kere J, Lenhard B, Schneider C, Suzuki H, Yagi K, de Hoon MJL, Shin JW, Carninci P. Functional annotation of human long noncoding RNAs via molecular phenotyping. Genome Res 2020; 30:1060-1072. [PMID: 32718982 PMCID: PMC7397864 DOI: 10.1101/gr.254219.119] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [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: 07/12/2019] [Accepted: 06/24/2020] [Indexed: 12/12/2022]
Abstract
Long noncoding RNAs (lncRNAs) constitute the majority of transcripts in the mammalian genomes, and yet, their functions remain largely unknown. As part of the FANTOM6 project, we systematically knocked down the expression of 285 lncRNAs in human dermal fibroblasts and quantified cellular growth, morphological changes, and transcriptomic responses using Capped Analysis of Gene Expression (CAGE). Antisense oligonucleotides targeting the same lncRNAs exhibited global concordance, and the molecular phenotype, measured by CAGE, recapitulated the observed cellular phenotypes while providing additional insights on the affected genes and pathways. Here, we disseminate the largest-to-date lncRNA knockdown data set with molecular phenotyping (over 1000 CAGE deep-sequencing libraries) for further exploration and highlight functional roles for ZNF213-AS1 and lnc-KHDC3L-2.
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Affiliation(s)
- Jordan A Ramilowski
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Chi Wai Yip
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Saumya Agrawal
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Jen-Chien Chang
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Yari Ciani
- Laboratorio Nazionale Consorzio Interuniversitario Biotecnologie (CIB), Trieste 34127, Italy
| | - Ivan V Kulakovskiy
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia.,Institute of Protein Research, Russian Academy of Sciences, Pushchino 142290, Russia
| | - Mickaël Mendez
- Department of Computer Science, University of Toronto, Toronto, Ontario M5S 1A1, Canada
| | | | - John F Ouyang
- Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore 169857, Singapore
| | - Nick Parkinson
- Roslin Institute, University of Edinburgh, Edinburgh EH25 9RG, United Kingdom
| | - Andreas Petri
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, Copenhagen 9220, Denmark
| | - Leonie Roos
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London W12 0NN, United Kingdom.,Computational Regulatory Genomics, MRC London Institute of Medical Sciences, London W12 0NN, United Kingdom
| | - Jessica Severin
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Kayoko Yasuzawa
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Imad Abugessaisa
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Altuna Akalin
- Berlin Institute for Medical Systems Biology, Max Delbrük Center for Molecular Medicine in the Helmholtz Association, Berlin 13125, Germany
| | - Ivan V Antonov
- Institute of Bioengineering, Research Center of Biotechnology, Russian Academy of Sciences, Moscow 117312, Russia
| | - Erik Arner
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Alessandro Bonetti
- RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Hidemasa Bono
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima City 739-0046, Japan
| | - Beatrice Borsari
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Catalonia 08003, Spain
| | - Frank Brombacher
- International Centre for Genetic Engineering and Biotechnology (ICGEB), University of Cape Town, Cape Town 7925, South Africa.,Institute of Infectious Diseases and Molecular Medicine (IDM), Department of Pathology, Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
| | - Christopher JF Cameron
- School of Computer Science, McGill University, Montréal, Québec H3G 1Y6, Canada.,Department of Biochemistry, Rosalind and Morris Goodman Cancer Research Center, McGill University, Montréal, Québec H3G 1Y6, Canada.,Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06510, USA
| | - Carlo Vittorio Cannistraci
- Biomedical Cybernetics Group, Biotechnology Center (BIOTEC), Center for Molecular and Cellular Bioengineering (CMCB), Center for Systems Biology Dresden (CSBD), Cluster of Excellence Physics of Life (PoL), Department of Physics, Technische Universität Dresden, Dresden 01062, Germany.,Center for Complex Network Intelligence (CCNI) at the Tsinghua Laboratory of Brain and Intelligence (THBI), Department of Bioengineering, Tsinghua University, Beijing 100084, China
| | - Ryan Cardenas
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Melissa Cardon
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan
| | - Howard Chang
- Center for Personal Dynamic Regulome, Stanford University, Stanford, California 94305, USA
| | - Josée Dostie
- Department of Biochemistry, Rosalind and Morris Goodman Cancer Research Center, McGill University, Montréal, Québec H3G 1Y6, Canada
| | - Luca Ducoli
- Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology, Zurich 8093, Switzerland
| | - Alexander Favorov
- Department of Computational Systems Biology, Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 119991, Russia.,Department of Oncology, Johns Hopkins University, Baltimore, Maryland 21287, USA
| | - Alexandre Fort
- RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Diego Garrido
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Catalonia 08003, Spain
| | - Noa Gil
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Juliette Gimenez
- Epigenetics and Genome Reprogramming Laboratory, IRCCS Fondazione Santa Lucia, Rome 00179, Italy
| | - Reto Guler
- International Centre for Genetic Engineering and Biotechnology (ICGEB), University of Cape Town, Cape Town 7925, South Africa.,Institute of Infectious Diseases and Molecular Medicine (IDM), Department of Pathology, Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa
| | - Lusy Handoko
- RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Jayson Harshbarger
- RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Akira Hasegawa
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Yuki Hasegawa
- RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Kosuke Hashimoto
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Norihito Hayatsu
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan
| | - Peter Heutink
- Genome Biology of Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Tübingen 72076, Germany
| | - Tetsuro Hirose
- Graduate School of Frontier Biosciences, Osaka University, Suita 565-0871, Japan
| | - Eddie L Imada
- Department of Oncology, Johns Hopkins University, Baltimore, Maryland 21287, USA
| | - Masayoshi Itoh
- RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Preventive Medicine and Diagnosis Innovation Program (PMI), Saitama 351-0198, Japan
| | - Bogumil Kaczkowski
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Aditi Kanhere
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Emily Kawabata
- RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Hideya Kawaji
- RIKEN Preventive Medicine and Diagnosis Innovation Program (PMI), Saitama 351-0198, Japan
| | - Tsugumi Kawashima
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - S Thomas Kelly
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan
| | - Miki Kojima
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Naoto Kondo
- RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Haruhiko Koseki
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan
| | - Tsukasa Kouno
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Anton Kratz
- RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Mariola Kurowska-Stolarska
- Institute of Infection, Immunity, and Inflammation, University of Glasgow, Glasgow, Scotland G12 8QQ, United Kingdom
| | - Andrew Tae Jun Kwon
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Jeffrey Leek
- Department of Oncology, Johns Hopkins University, Baltimore, Maryland 21287, USA
| | - Andreas Lennartsson
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge 14157, Sweden
| | - Marina Lizio
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Fernando López-Redondo
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Joachim Luginbühl
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Shiori Maeda
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan
| | - Vsevolod J Makeev
- Department of Computational Systems Biology, Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 119991, Russia.,Moscow Institute of Physics and Technology, Dolgoprudny 141701, Russia
| | - Luigi Marchionni
- Department of Oncology, Johns Hopkins University, Baltimore, Maryland 21287, USA
| | - Yulia A Medvedeva
- Institute of Bioengineering, Research Center of Biotechnology, Russian Academy of Sciences, Moscow 117312, Russia.,Moscow Institute of Physics and Technology, Dolgoprudny 141701, Russia
| | - Aki Minoda
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Ferenc Müller
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Manuel Muñoz-Aguirre
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Catalonia 08003, Spain
| | - Mitsuyoshi Murata
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Hiromi Nishiyori
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Kazuhiro R Nitta
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Shuhei Noguchi
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Yukihiko Noro
- RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Ramil Nurtdinov
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Catalonia 08003, Spain
| | - Yasushi Okazaki
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Valerio Orlando
- Biological and Environmental Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Denis Paquette
- Department of Biochemistry, Rosalind and Morris Goodman Cancer Research Center, McGill University, Montréal, Québec H3G 1Y6, Canada
| | - Callum J C Parr
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan
| | - Owen J L Rackham
- Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore 169857, Singapore
| | - Patrizia Rizzu
- Genome Biology of Neurodegenerative Diseases, German Center for Neurodegenerative Diseases (DZNE), Tübingen 72076, Germany
| | | | - Albin Sandelin
- Department of Biology and BRIC, University of Copenhagen, Denmark, Copenhagen N DK2200, Denmark
| | - Pillay Sanjana
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Colin A M Semple
- MRC Human Genetics Unit, University of Edinburgh, Edinburgh EH4 2XU, United Kingdom
| | - Youtaro Shibayama
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Divya M Sivaraman
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Takahiro Suzuki
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | | | - Michihira Tagami
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Martin S Taylor
- MRC Human Genetics Unit, University of Edinburgh, Edinburgh EH4 2XU, United Kingdom
| | - Chikashi Terao
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan
| | - Malte Thodberg
- Department of Biology and BRIC, University of Copenhagen, Denmark, Copenhagen N DK2200, Denmark
| | - Supat Thongjuea
- RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Vidisha Tripathi
- National Centre for Cell Science, Pune, Maharashtra 411007, India
| | - Igor Ulitsky
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot 76100, Israel
| | - Roberto Verardo
- Laboratorio Nazionale Consorzio Interuniversitario Biotecnologie (CIB), Trieste 34127, Italy
| | - Ilya E Vorontsov
- Department of Computational Systems Biology, Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow 119991, Russia
| | - Chinatsu Yamamoto
- RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Robert S Young
- Centre for Global Health Research, Usher Institute, University of Edinburgh, Edinburgh EH8 9AG, United Kingdom
| | - J Kenneth Baillie
- Roslin Institute, University of Edinburgh, Edinburgh EH25 9RG, United Kingdom
| | - Alistair R R Forrest
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan.,Harry Perkins Institute of Medical Research, QEII Medical Centre and Centre for Medical Research, The University of Western Australia, Nedlands, Perth, Western Australia 6009, Australia
| | - Roderic Guigó
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Catalonia 08003, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Catalonia 08002, Spain
| | | | - Chung Chau Hon
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Takeya Kasukawa
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Sakari Kauppinen
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, Copenhagen 9220, Denmark
| | - Juha Kere
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge 14157, Sweden.,Stem Cells and Metabolism Research Program, University of Helsinki and Folkhälsan Research Center, 00290 Helsinki, Finland
| | - Boris Lenhard
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London W12 0NN, United Kingdom.,Computational Regulatory Genomics, MRC London Institute of Medical Sciences, London W12 0NN, United Kingdom.,Sars International Centre for Marine Molecular Biology, University of Bergen, Bergen N-5008, Norway
| | - Claudio Schneider
- Laboratorio Nazionale Consorzio Interuniversitario Biotecnologie (CIB), Trieste 34127, Italy.,Department of Medicine and Consorzio Interuniversitario Biotecnologie p.zle Kolbe 1 University of Udine, Udine 33100, Italy
| | - Harukazu Suzuki
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Ken Yagi
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Michiel J L de Hoon
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Jay W Shin
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
| | - Piero Carninci
- RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045, Japan.,RIKEN Center for Life Science Technologies, Yokohama, Kanagawa 230-0045, Japan
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4
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Gentile C, Berlivet S, Mayran A, Paquette D, Guerard-Millet F, Bajon E, Dostie J, Kmita M. PRC2-Associated Chromatin Contacts in the Developing Limb Reveal a Possible Mechanism for the Atypical Role of PRC2 in HoxA Gene Expression. Dev Cell 2019; 50:184-196.e4. [DOI: 10.1016/j.devcel.2019.05.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 03/24/2019] [Accepted: 05/09/2019] [Indexed: 10/26/2022]
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5
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Wang XQD, Cameron CJF, Paquette D, Segal D, Warsaba R, Blanchette M, Dostie J. 2C-ChIP: measuring chromatin immunoprecipitation signal from defined genomic regions with deep sequencing. BMC Genomics 2019; 20:162. [PMID: 30819105 PMCID: PMC6394006 DOI: 10.1186/s12864-019-5532-5] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 02/15/2019] [Indexed: 11/12/2022] Open
Abstract
Background Understanding how transcription occurs requires the integration of genome-wide and locus-specific information gleaned from robust technologies. Chromatin immunoprecipitation (ChIP) is a staple in gene expression studies, and while genome-wide methods are available, high-throughput approaches to analyze defined regions are lacking. Results Here, we present carbon copy-ChIP (2C-ChIP), a versatile, inexpensive, and high-throughput technique to quantitatively measure the abundance of DNA sequences in ChIP samples. This method combines ChIP with ligation-mediated amplification (LMA) and deep sequencing to probe large genomic regions of interest. 2C-ChIP recapitulates results from benchmark ChIP approaches. We applied 2C-ChIP to the HOXA cluster to find that a region where H3K27me3 and SUZ12 linger encodes HOXA-AS2, a long non-coding RNA that enhances gene expression during cellular differentiation. Conclusions 2C-ChIP fills the need for a robust molecular biology tool designed to probe dedicated genomic regions in a high-throughput setting. The flexible nature of the 2C-ChIP approach allows rapid changes in experimental design at relatively low cost, making it a highly efficient method for chromatin analysis. Electronic supplementary material The online version of this article (10.1186/s12864-019-5532-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xue Qing David Wang
- Department of Biochemistry and Rosalind & Morris Goodman Cancer Research Center, McGill University, Montréal, Québec, H3G 1Y6, Canada
| | - Christopher J F Cameron
- Department of Biochemistry and Rosalind & Morris Goodman Cancer Research Center, McGill University, Montréal, Québec, H3G 1Y6, Canada.,School of Computer Science and McGill Center for Bioinformatics, McGill University, Montréal, Québec, H3A 0E9, Canada
| | - Denis Paquette
- Department of Biochemistry and Rosalind & Morris Goodman Cancer Research Center, McGill University, Montréal, Québec, H3G 1Y6, Canada
| | - Dana Segal
- Department of Biochemistry and Rosalind & Morris Goodman Cancer Research Center, McGill University, Montréal, Québec, H3G 1Y6, Canada
| | - Reid Warsaba
- Department of Biochemistry and Rosalind & Morris Goodman Cancer Research Center, McGill University, Montréal, Québec, H3G 1Y6, Canada
| | - Mathieu Blanchette
- School of Computer Science and McGill Center for Bioinformatics, McGill University, Montréal, Québec, H3A 0E9, Canada
| | - Josée Dostie
- Department of Biochemistry and Rosalind & Morris Goodman Cancer Research Center, McGill University, Montréal, Québec, H3G 1Y6, Canada.
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6
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Roche PJR, Gytz H, Hussain F, Cameron CJF, Paquette D, Blanchette M, Dostie J, Nagar B, Akavia UD. Double-Stranded Biotinylated Donor Enhances Homology-Directed Repair in Combination with Cas9 Monoavidin in Mammalian Cells. CRISPR J 2018; 1:414-430. [PMID: 31021244 DOI: 10.1089/crispr.2018.0045] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Homology-directed repair (HDR) induced by site specific DNA double-strand breaks with CRISPR-Cas9 is a precision gene editing approach that occurs at low frequency in comparison to indel forming non-homologous end joining (NHEJ). In order to obtain high HDR percentages in mammalian cells, we engineered a Cas9 protein fused to a monoavidin domain to bind biotinylated donor DNA. In addition, we used the cationic polymer, polyethylenimine, to deliver Cas9-donor DNA complexes into cells. Improved HDR percentages of up to 90% in three loci tested (CXCR4, EMX1, and TLR) in standard HEK293T cells were observed. Our results suggest that donor DNA biotinylation and Cas9-donor conjugation in addition to delivery influence HDR efficiency.
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Affiliation(s)
- Philip J R Roche
- 1 Department of Biochemistry, McGill University, Montreal, Canada
| | - Heidi Gytz
- 2 Department of Molecular Biology and Genetics, Aarhus University , Aarhus, Denmark
| | - Faiz Hussain
- 1 Department of Biochemistry, McGill University, Montreal, Canada
| | - Christopher J F Cameron
- 1 Department of Biochemistry, McGill University, Montreal, Canada.,3 Rosalind and Morris Goodman Cancer Research Centre, McGill University , Montreal, Canada.,4 School of Computer Science and Centre for Bioinformatics, McGill University , Montreal, Canada
| | - Denis Paquette
- 1 Department of Biochemistry, McGill University, Montreal, Canada
| | - Mathieu Blanchette
- 4 School of Computer Science and Centre for Bioinformatics, McGill University , Montreal, Canada
| | - Josée Dostie
- 1 Department of Biochemistry, McGill University, Montreal, Canada.,3 Rosalind and Morris Goodman Cancer Research Centre, McGill University , Montreal, Canada
| | - Bhushan Nagar
- 1 Department of Biochemistry, McGill University, Montreal, Canada.,5 Groupe de Recherche Axé sur la Structure des Protéines, McGill University , Montreal, Canada
| | - Uri David Akavia
- 1 Department of Biochemistry, McGill University, Montreal, Canada.,3 Rosalind and Morris Goodman Cancer Research Centre, McGill University , Montreal, Canada
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7
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Authier S, Paquette D, Pouliot M. Strategies for EEG interpretation in preclinical studies: Chasing biomarkers of seizure activity. J Pharmacol Toxicol Methods 2017. [DOI: 10.1016/j.vascn.2017.02.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Zheng HF, Forgetta V, Hsu YH, Estrada K, Rosello-Diez A, Leo PJ, Dahia CL, Park-Min KH, Tobias JH, Kooperberg C, Kleinman A, Styrkarsdottir U, Liu CT, Uggla C, Evans DS, Nielson CM, Walter K, Pettersson-Kymmer U, McCarthy S, Eriksson J, Kwan T, Jhamai M, Trajanoska K, Memari Y, Min J, Huang J, Danecek P, Wilmot B, Li R, Chou WC, Mokry LE, Moayyeri A, Claussnitzer M, Cheng CH, Cheung W, Medina-Gómez C, Ge B, Chen SH, Choi K, Oei L, Fraser J, Kraaij R, Hibbs MA, Gregson CL, Paquette D, Hofman A, Wibom C, Tranah GJ, Marshall M, Gardiner BB, Cremin K, Auer P, Hsu L, Ring S, Tung JY, Thorleifsson G, Enneman AW, van Schoor NM, de Groot LCPGM, van der Velde N, Melin B, Kemp JP, Christiansen C, Sayers A, Zhou Y, Calderari S, van Rooij J, Carlson C, Peters U, Berlivet S, Dostie J, Uitterlinden AG, Williams SR, Farber C, Grinberg D, LaCroix AZ, Haessler J, Chasman DI, Giulianini F, Rose LM, Ridker PM, Eisman JA, Nguyen TV, Center JR, Nogues X, Garcia-Giralt N, Launer LL, Gudnason V, Mellström D, Vandenput L, Amin N, van Duijn CM, Karlsson MK, Ljunggren Ö, Svensson O, Hallmans G, Rousseau F, Giroux S, Bussière J, Arp PP, Koromani F, Prince RL, Lewis JR, Langdahl BL, Hermann AP, Jensen JEB, Kaptoge S, Khaw KT, Reeve J, Formosa MM, Xuereb-Anastasi A, Åkesson K, McGuigan FE, Garg G, Olmos JM, Zarrabeitia MT, Riancho JA, Ralston SH, Alonso N, Jiang X, Goltzman D, Pastinen T, Grundberg E, Gauguier D, Orwoll ES, Karasik D, Davey-Smith G, Smith AV, Siggeirsdottir K, Harris TB, Zillikens MC, van Meurs JBJ, Thorsteinsdottir U, Maurano MT, Timpson NJ, Soranzo N, Durbin R, Wilson SG, Ntzani EE, Brown MA, Stefansson K, Hinds DA, Spector T, Cupples LA, Ohlsson C, Greenwood CMT, Jackson RD, Rowe DW, Loomis CA, Evans DM, Ackert-Bicknell CL, Joyner AL, Duncan EL, Kiel DP, Rivadeneira F, Richards JB. Whole-genome sequencing identifies EN1 as a determinant of bone density and fracture. Nature 2015; 526:112-117. [PMID: 26367794 PMCID: PMC4755714 DOI: 10.1038/nature14878 10.1016/j.ajhg.2017.12.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 06/30/2015] [Indexed: 04/02/2024]
Abstract
The extent to which low-frequency (minor allele frequency (MAF) between 1-5%) and rare (MAF ≤ 1%) variants contribute to complex traits and disease in the general population is mainly unknown. Bone mineral density (BMD) is highly heritable, a major predictor of osteoporotic fractures, and has been previously associated with common genetic variants, as well as rare, population-specific, coding variants. Here we identify novel non-coding genetic variants with large effects on BMD (ntotal = 53,236) and fracture (ntotal = 508,253) in individuals of European ancestry from the general population. Associations for BMD were derived from whole-genome sequencing (n = 2,882 from UK10K (ref. 10); a population-based genome sequencing consortium), whole-exome sequencing (n = 3,549), deep imputation of genotyped samples using a combined UK10K/1000 Genomes reference panel (n = 26,534), and de novo replication genotyping (n = 20,271). We identified a low-frequency non-coding variant near a novel locus, EN1, with an effect size fourfold larger than the mean of previously reported common variants for lumbar spine BMD (rs11692564(T), MAF = 1.6%, replication effect size = +0.20 s.d., Pmeta = 2 × 10(-14)), which was also associated with a decreased risk of fracture (odds ratio = 0.85; P = 2 × 10(-11); ncases = 98,742 and ncontrols = 409,511). Using an En1(cre/flox) mouse model, we observed that conditional loss of En1 results in low bone mass, probably as a consequence of high bone turnover. We also identified a novel low-frequency non-coding variant with large effects on BMD near WNT16 (rs148771817(T), MAF = 1.2%, replication effect size = +0.41 s.d., Pmeta = 1 × 10(-11)). In general, there was an excess of association signals arising from deleterious coding and conserved non-coding variants. These findings provide evidence that low-frequency non-coding variants have large effects on BMD and fracture, thereby providing rationale for whole-genome sequencing and improved imputation reference panels to study the genetic architecture of complex traits and disease in the general population.
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Affiliation(s)
- Hou-Feng Zheng
- Departments of Medicine, Human Genetics, Epidemiology and Biostatistics, McGill University, Montréal H3A 1A2, Canada
- Department of Medicine, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montréal H3T 1E2, Canada
| | - Vincenzo Forgetta
- Departments of Medicine, Human Genetics, Epidemiology and Biostatistics, McGill University, Montréal H3A 1A2, Canada
- Department of Medicine, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montréal H3T 1E2, Canada
| | - Yi-Hsiang Hsu
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Broad Institute of MIT and Harvard, Boston, Massachusetts 02115, USA
| | - Karol Estrada
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Broad Institute of MIT and Harvard, Boston, Massachusetts 02115, USA
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, Massachusetts 02114, USA
| | - Alberto Rosello-Diez
- Developmental Biology Program, Sloan Kettering Institute, New York, New York 10065, USA
| | - Paul J Leo
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
| | - Chitra L Dahia
- Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, New York 10065, USA
- Tissue Engineering, Regeneration and Repair Program, Hospital for Special Surgery, New York 10021, USA
| | - Kyung Hyun Park-Min
- Rheumatology Divison, Hospital for Special Surgery New York, New York 10021, USA
| | - Jonathan H Tobias
- School of Clinical Science, University of Bristol, Bristol BS10 5NB, UK
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK
| | | | - Aaron Kleinman
- Department of Research, 23andMe, Mountain View, California 94041, USA
| | | | - Ching-Ti Liu
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts 02118, USA
| | - Charlotta Uggla
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-413 45, Sweden
| | - Daniel S Evans
- California Pacific Medical Center Research Institute, San Francisco, California 94158, USA
| | - Carrie M Nielson
- Department of Public Health and Preventive Medicine, Oregon Health &Science University, Portland, Oregon 97239, USA
- Bone &Mineral Unit, Oregon Health &Science University, Portland, Oregon 97239, USA
| | - Klaudia Walter
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Ulrika Pettersson-Kymmer
- Departments of Pharmacology and Clinical Neurosciences, Umeå University, Umeå S-901 87, Sweden
- Department of Public Health and Clinical Medicine, Umeå University, Umeå SE-901 87, Sweden
| | - Shane McCarthy
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Joel Eriksson
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-413 45, Sweden
- Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-413 45, Sweden
| | - Tony Kwan
- McGill University and Genome Quebec Innovation Centre, Montréal H3A 0G1, Canada
| | - Mila Jhamai
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Katerina Trajanoska
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Yasin Memari
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Josine Min
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK
| | - Jie Huang
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Petr Danecek
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Beth Wilmot
- Oregon Clinical and Translational Research Institute, Oregon Health &Science University, Portland, Oregon 97239, USA
- Department of Medical and Clinical Informatics, Oregon Health &Science University, Portland, Oregon 97239, USA
| | - Rui Li
- Departments of Medicine, Human Genetics, Epidemiology and Biostatistics, McGill University, Montréal H3A 1A2, Canada
- Department of Medicine, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montréal H3T 1E2, Canada
| | - Wen-Chi Chou
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Lauren E Mokry
- Department of Medicine, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montréal H3T 1E2, Canada
| | - Alireza Moayyeri
- Farr Institute of Health Informatics Research, University College London, London NW1 2DA, UK
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
| | - Melina Claussnitzer
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Broad Institute of MIT and Harvard, Boston, Massachusetts 02115, USA
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02115, USA
| | - Chia-Ho Cheng
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
| | - Warren Cheung
- McGill University and Genome Quebec Innovation Centre, Montréal H3A 0G1, Canada
- Department of Human Genetics, McGill University, Montréal H3A 1B1, Canada
| | - Carolina Medina-Gómez
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - Bing Ge
- McGill University and Genome Quebec Innovation Centre, Montréal H3A 0G1, Canada
| | - Shu-Huang Chen
- McGill University and Genome Quebec Innovation Centre, Montréal H3A 0G1, Canada
| | - Kwangbom Choi
- Center for Musculoskeletal Research, University of Rochester, Rochester, New York 14642, USA
| | - Ling Oei
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - James Fraser
- Department of Biochemistry and Goodman Cancer Research Center, McGill University, Montréal H3G 1Y6, Canada
| | - Robert Kraaij
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - Matthew A Hibbs
- Center for Musculoskeletal Research, University of Rochester, Rochester, New York 14642, USA
- Department of Computer Science, Trinity University, San Antonio, Texas 78212, USA
| | - Celia L Gregson
- Musculoskeletal Research Unit, University of Bristol, Bristol BS10 5NB, UK
| | - Denis Paquette
- Department of Biochemistry and Goodman Cancer Research Center, McGill University, Montréal H3G 1Y6, Canada
| | - Albert Hofman
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - Carl Wibom
- Department of Radiation Sciences, Umeå University, Umeå S-901 87, Sweden
| | - Gregory J Tranah
- Department of Public Health and Preventive Medicine, Oregon Health &Science University, Portland, Oregon 97239, USA
- Bone &Mineral Unit, Oregon Health &Science University, Portland, Oregon 97239, USA
| | - Mhairi Marshall
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
| | - Brooke B Gardiner
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
| | - Katie Cremin
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
| | - Paul Auer
- School of Public Health, University of Wisconsin, Milwaukee, Wisconsin 53726, USA
| | - Li Hsu
- Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA
| | - Sue Ring
- School of Social and Community Medicine, University of Bristol, Bristol BS8 2BN, UK
| | - Joyce Y Tung
- Department of Research, 23andMe, Mountain View, California 94041, USA
| | | | - Anke W Enneman
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Natasja M van Schoor
- Department of Epidemiology and Biostatistics and the EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam 1007 MB, The Netherlands
| | | | - Nathalie van der Velde
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Internal Medicine, Section Geriatrics, Academic Medical Center, Amsterdam 1105, The Netherlands
| | - Beatrice Melin
- Department of Radiation Sciences, Umeå University, Umeå S-901 87, Sweden
| | - John P Kemp
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK
| | | | - Adrian Sayers
- Musculoskeletal Research Unit, University of Bristol, Bristol BS10 5NB, UK
| | - Yanhua Zhou
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts 02118, USA
| | - Sophie Calderari
- Cordeliers Research Centre, INSERM UMRS 1138, Paris 75006, France
- Institute of Cardiometabolism and Nutrition, University Pierre &Marie Curie, Paris 75013, France
| | - Jeroen van Rooij
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - Chris Carlson
- Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA
| | - Ulrike Peters
- Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA
| | - Soizik Berlivet
- Department of Biochemistry and Goodman Cancer Research Center, McGill University, Montréal H3G 1Y6, Canada
| | - Josée Dostie
- Department of Biochemistry and Goodman Cancer Research Center, McGill University, Montréal H3G 1Y6, Canada
| | - Andre G Uitterlinden
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - Stephen R Williams
- Departments of Medicine (Cardiovascular Medicine), Centre for Public Health Genomics, University of Virginia, Charlottesville, Virginia 22908, USA
| | - Charles Farber
- Departments of Medicine (Cardiovascular Medicine), Centre for Public Health Genomics, University of Virginia, Charlottesville, Virginia 22908, USA
| | - Daniel Grinberg
- Department of Genetics, University of Barcelona, Barcelona 08028, Spain
- U-720, Centre for Biomedical Network Research on Rare Diseases (CIBERER), Barcelona 28029, Spain
- Department of Human Molecular Genetics, The Institute of Biomedicine of the University of Barcelona (IBUB), Barcelona 08028, Spain
| | - Andrea Z LaCroix
- Women's Health Center of Excellence Family Medicine and Public Health, University of California - San Diego, San Diego, California 92093, USA
| | - Jeff Haessler
- Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA
| | - Daniel I Chasman
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Division of Preventive Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02215, USA
| | - Franco Giulianini
- Division of Preventive Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02215, USA
| | - Lynda M Rose
- Division of Preventive Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02215, USA
| | - Paul M Ridker
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Division of Preventive Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02215, USA
| | - John A Eisman
- Osteoporosis &Bone Biology Program, Garvan Institute of Medical Research, Sydney 2010, Australia
- School of Medicine Sydney, University of Notre Dame Australia, Sydney 6959, Australia
- St. Vincent's Hospital &Clinical School, NSW University, Sydney 2010, Australia
| | - Tuan V Nguyen
- Osteoporosis &Bone Biology Program, Garvan Institute of Medical Research, Sydney 2010, Australia
- St. Vincent's Hospital &Clinical School, NSW University, Sydney 2010, Australia
| | - Jacqueline R Center
- Osteoporosis &Bone Biology Program, Garvan Institute of Medical Research, Sydney 2010, Australia
- St. Vincent's Hospital &Clinical School, NSW University, Sydney 2010, Australia
| | - Xavier Nogues
- Musculoskeletal Research Group, Institut Hospital del Mar d'Investigacions Mèdiques, Barcelona 08003, Spain
- Cooperative Research Network on Aging and Fragility (RETICEF), Institute of Health Carlos III, 28029, Spain
- Department of Internal Medicine, Hospital del Mar, Universitat Autònoma de Barcelona, Barcelona 08193, Spain
| | - Natalia Garcia-Giralt
- Musculoskeletal Research Group, Institut Hospital del Mar d'Investigacions Mèdiques, Barcelona 08003, Spain
- Cooperative Research Network on Aging and Fragility (RETICEF), Institute of Health Carlos III, 28029, Spain
| | - Lenore L Launer
- Neuroepidemiology Section, National Institute on Aging, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Vilmunder Gudnason
- Icelandic Heart Association, Kopavogur IS-201, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik IS-101, Iceland
| | - Dan Mellström
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-413 45, Sweden
| | - Liesbeth Vandenput
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-413 45, Sweden
| | - Najaf Amin
- Genetic epidemiology unit, Department of Epidemiology, Erasmus MC, Rotterdam 3000CA, The Netherlands
| | - Cornelia M van Duijn
- Genetic epidemiology unit, Department of Epidemiology, Erasmus MC, Rotterdam 3000CA, The Netherlands
| | - Magnus K Karlsson
- Department of Orthopaedics, Skåne University Hospital Malmö 205 02, Sweden
| | - Östen Ljunggren
- Department of Medical Sciences, University of Uppsala, Uppsala 751 85, Sweden
| | - Olle Svensson
- Department of Surgical and Perioperative Sciences, Umeå Unviersity, Umeå 901 85, Sweden
| | - Göran Hallmans
- Department of Public Health and Clinical Medicine, Umeå University, Umeå SE-901 87, Sweden
| | - François Rousseau
- Department of Molecular Biology, Medical Biochemistry and Pathology, Université Laval, Québec City G1V 0A6, Canada
- Axe Santé des Populations et Pratiques Optimales en Santé, Centre de recherche du CHU de Québec, Québec City G1V 4G2, Canada
| | - Sylvie Giroux
- Axe Santé des Populations et Pratiques Optimales en Santé, Centre de recherche du CHU de Québec, Québec City G1V 4G2, Canada
| | - Johanne Bussière
- Axe Santé des Populations et Pratiques Optimales en Santé, Centre de recherche du CHU de Québec, Québec City G1V 4G2, Canada
| | - Pascal P Arp
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Fjorda Koromani
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Richard L Prince
- Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands 6009, Australia
- Department of Medicine, University of Western Australia, Perth 6009, Australia
| | - Joshua R Lewis
- Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands 6009, Australia
- Department of Medicine, University of Western Australia, Perth 6009, Australia
| | - Bente L Langdahl
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus C 8000, Denmark
| | - A Pernille Hermann
- Department of Endocrinology, Odense University Hospital, Odense C 5000, Denmark
| | - Jens-Erik B Jensen
- Department of Endocrinology, Hvidovre University Hospital, Hvidovre 2650, Denmark
| | - Stephen Kaptoge
- Farr Institute of Health Informatics Research, University College London, London NW1 2DA, UK
| | - Kay-Tee Khaw
- Clinical Gerontology Unit, University of Cambridge, Cambridge CB2 2QQ, UK
| | - Jonathan Reeve
- Medicine and Public Health and Primary Care, University of Cambridge, Cambridge CB1 8RN, UK
- Institute of Musculoskeletal Sciences, The Botnar Research Centre, University of Oxford, Oxford OX3 7LD, UK
| | - Melissa M Formosa
- Department of Applied Biomedical Science, Faculty of Health Sciences, University of Malta, Msida MSD 2080, Malta
| | - Angela Xuereb-Anastasi
- Department of Applied Biomedical Science, Faculty of Health Sciences, University of Malta, Msida MSD 2080, Malta
| | - Kristina Åkesson
- Department of Orthopaedics, Skåne University Hospital Malmö 205 02, Sweden
- Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences Malmö, Lund University, 205 02, Sweden
| | - Fiona E McGuigan
- Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences Malmö, Lund University, 205 02, Sweden
| | - Gaurav Garg
- Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences Malmö, Lund University, 205 02, Sweden
| | - Jose M Olmos
- Department of Medicine and Psychiatry, University of Cantabria, Santander 39011, Spain
- Department of Internal Medicine, Hospital U.M. Valdecilla- IDIVAL, Santander 39008, Spain
| | - Maria T Zarrabeitia
- Department of Legal Medicine, University of Cantabria, Santander 39011, Spain
| | - Jose A Riancho
- Department of Medicine and Psychiatry, University of Cantabria, Santander 39011, Spain
- Department of Internal Medicine, Hospital U.M. Valdecilla- IDIVAL, Santander 39008, Spain
| | - Stuart H Ralston
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, Western General Hospital, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Nerea Alonso
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, Western General Hospital, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Xi Jiang
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut 06030, USA
| | - David Goltzman
- Department of Medicine and Physiology, McGill University, Montréal H4A 3J1, Canada
| | - Tomi Pastinen
- McGill University and Genome Quebec Innovation Centre, Montréal H3A 0G1, Canada
- Department of Human Genetics, McGill University, Montréal H3A 1B1, Canada
| | - Elin Grundberg
- McGill University and Genome Quebec Innovation Centre, Montréal H3A 0G1, Canada
- Department of Human Genetics, McGill University, Montréal H3A 1B1, Canada
| | - Dominique Gauguier
- Cordeliers Research Centre, INSERM UMRS 1138, Paris 75006, France
- Institute of Cardiometabolism and Nutrition, University Pierre &Marie Curie, Paris 75013, France
| | - Eric S Orwoll
- Bone &Mineral Unit, Oregon Health &Science University, Portland, Oregon 97239, USA
- Department of Medicine, Oregon Health &Science University, Portland, Oregon 97239, USA
| | - David Karasik
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
- Faculty of Medicine in the Galilee, Bar-Ilan University, Safed 13010, Israel
| | - George Davey-Smith
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK
| | - Albert V Smith
- Icelandic Heart Association, Kopavogur IS-201, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik IS-101, Iceland
| | | | - Tamara B Harris
- Laboratory of Epidemiology, National Institute on Aging, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - M Carola Zillikens
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Joyce B J van Meurs
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
| | - Unnur Thorsteinsdottir
- Department of Population Genomics, deCODE Genetics, Reykjavik IS-101, Iceland
- Faculty of Medicine, University of Iceland, Reykjavik IS-101, Iceland
| | - Matthew T Maurano
- Department of Genome Sciences, University of Washington, Seattle, Washington 98195, USA
| | - Nicholas J Timpson
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK
| | - Nicole Soranzo
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Richard Durbin
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SA, UK
| | - Scott G Wilson
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
- Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands 6009, Australia
- School of Medicine and Pharmacology, University of Western Australia, Crawley 6009, Australia
| | - Evangelia E Ntzani
- Department of Hygiene and Epidemiology, University of Ioannina School of Medicine, Ioannina 45110, Greece
- Department of Health Services, Policy and Practice, Brown University School of Public Health, Providence, Rhode Island 02903, USA
| | - Matthew A Brown
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
| | - Kari Stefansson
- Faculty of Medicine, University of Iceland, Reykjavik IS-101, Iceland
- deCODE Genetics, Reykjavik IS-101, Iceland
| | - David A Hinds
- Department of Research, 23andMe, Mountain View, California 94041, USA
| | - Tim Spector
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
| | - L Adrienne Cupples
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts 02118, USA
- Framingham Heart Study, Framingham, Massachusetts 01702, USA
| | - Claes Ohlsson
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg S-413 45, Sweden
| | - Celia M T Greenwood
- Department of Medicine, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montréal H3T 1E2, Canada
- Department of Human Genetics, McGill University, Montréal H3A 1B1, Canada
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montréal H3A 1A2, Canada
- Department of Oncology, Gerald Bronfman Centre, McGill University, Montréal H2W 1S6, Canada
| | - Rebecca D Jackson
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, The Ohio State University, Columbus, Ohio 43210, USA
| | - David W Rowe
- Department of Reconstructive Sciences, College of Dental Medicine, University of Connecticut Health Center, Farmington, Connecticut 06030, USA
| | - Cynthia A Loomis
- The Ronald O. Perelman Department of Dermatology and Department of Cell Biology, New York University School of Medicine, New York, New York 10016, USA
| | - David M Evans
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol BS8 2BN, UK
| | | | - Alexandra L Joyner
- Developmental Biology Program, Sloan Kettering Institute, New York, New York 10065, USA
| | - Emma L Duncan
- The University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital, Brisbane 4102, Australia
- Department of Diabetes and Endocrinology, Royal Brisbane and Women's Hospital, Brisbane 4029, Australia
| | - Douglas P Kiel
- Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts 02131, USA
- Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
- Broad Institute of MIT and Harvard, Boston, Massachusetts 02115, USA
- Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts 02115, USA
| | - Fernando Rivadeneira
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam 3015GE, The Netherlands
- Netherlands Genomics Initiative (NGI)-sponsored Netherlands Consortium for Healthy Aging (NCHA), Leiden 2300RC, The Netherlands
| | - J Brent Richards
- Departments of Medicine, Human Genetics, Epidemiology and Biostatistics, McGill University, Montréal H3A 1A2, Canada
- Department of Medicine, Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Montréal H3T 1E2, Canada
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
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Williamson I, Berlivet S, Eskeland R, Boyle S, Illingworth RS, Paquette D, Dostie J, Bickmore WA. Spatial genome organization: contrasting views from chromosome conformation capture and fluorescence in situ hybridization. Genes Dev 2014; 28:2778-91. [PMID: 25512564 PMCID: PMC4265680 DOI: 10.1101/gad.251694.114] [Citation(s) in RCA: 190] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 10/30/2014] [Indexed: 01/28/2023]
Abstract
Although important for gene regulation, most studies of genome organization use either fluorescence in situ hybridization (FISH) or chromosome conformation capture (3C) methods. FISH directly visualizes the spatial relationship of sequences but is usually applied to a few loci at a time. The frequency at which sequences are ligated together by formaldehyde cross-linking can be measured genome-wide by 3C methods, with higher frequencies thought to reflect shorter distances. FISH and 3C should therefore give the same views of genome organization, but this has not been tested extensively. We investigated the murine HoxD locus with 3C carbon copy (5C) and FISH in different developmental and activity states and in the presence or absence of epigenetic regulators. We identified situations in which the two data sets are concordant but found other conditions under which chromatin topographies extrapolated from 5C or FISH data are not compatible. We suggest that products captured by 3C do not always reflect spatial proximity, with ligation occurring between sequences located hundreds of nanometers apart, influenced by nuclear environment and chromatin composition. We conclude that results obtained at high resolution with either 3C methods or FISH alone must be interpreted with caution and that views about genome organization should be validated by independent methods.
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Affiliation(s)
- Iain Williamson
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, United Kingdom
| | - Soizik Berlivet
- Department of Biochemistry, Goodman Cancer Research Center, McGill University, Montréal, Québec H3G1Y6, Canada
| | - Ragnhild Eskeland
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, United Kingdom
| | - Shelagh Boyle
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, United Kingdom
| | - Robert S Illingworth
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, United Kingdom
| | | | | | - Wendy A Bickmore
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, United Kingdom;
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Ha S, Foley S, Paquette D, Seto J. A review of Human Immunodeficiency Virus (HIV) rapid testing. Can Commun Dis Rep 2014; 40:408-419. [PMID: 29769872 PMCID: PMC5864438 DOI: 10.14745/ccdr.v40i18a06] [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] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND In Canada, it is estimated that 71,300 persons were living with HIV at the end of 2011. Approximately 25% (14,500 to 21,500) of prevalent cases were unaware of their HIV infection. Expanded use of HIV rapid tests may increase the detection of undiagnosed infections, enable earlier treatment and support services and prevent the onward transmission of HIV. OBJECTIVE To examine patient acceptability, impact (defined as receipt of test results and linkage to care) and cost-effectiveness of HIV rapid tests. METHODS A search was conducted for systematic reviews on HIV rapid testing, with studies from both developed and developing countries, published in English and between 2000 and 2013. The Assessment of Multiple Systematic Review (AMSTAR) tool was used to assess the included systematic reviews for methodological quality. Results were summarized narratively for each of the outcomes. RESULTS Eight systematic reviews were included. Acceptability of HIV rapid tests was generally high in medical settings (69% to 98%) especially among pregnant women and youth attending emergency rooms but was lower in non-medical settings (14% to 46%). The percentage of people who obtained their test results was variable. It was high (83% to 93%) in emergency rooms but was low in a rapid care setting with regular business hours (27%). Impact on linkage to care was limited. Only one systematic review examined cost-effectiveness of rapid testing and concluded that HIV rapid tests were cost-effective in comparison to traditional methods; however, results were all based on static models. CONCLUSION Overall, HIV rapid tests demonstrated generally high acceptability, variability in receiving test results and limited impact on linkage to care. While these findings suggest that HIV rapid tests may be useful, further research is needed to confirm in whom, when and where they are best used and how to ensure better linkage to care.
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Affiliation(s)
- S Ha
- Centre for Communicable Diseases and Infection Control, Public Health Agency of Canada, Ottawa, ON
| | - S Foley
- Centre for Communicable Diseases and Infection Control, Public Health Agency of Canada, Ottawa, ON
| | - D Paquette
- Centre for Communicable Diseases and Infection Control, Public Health Agency of Canada, Ottawa, ON
| | - J Seto
- Centre for Communicable Diseases and Infection Control, Public Health Agency of Canada, Ottawa, ON
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Berlivet S, Paquette D, Dumouchel A, Langlais D, Dostie J, Kmita M. Clustering of tissue-specific sub-TADs accompanies the regulation of HoxA genes in developing limbs. PLoS Genet 2013; 9:e1004018. [PMID: 24385922 PMCID: PMC3873244 DOI: 10.1371/journal.pgen.1004018] [Citation(s) in RCA: 127] [Impact Index Per Article: 11.5] [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: 07/18/2013] [Accepted: 10/25/2013] [Indexed: 12/19/2022] Open
Abstract
HoxA genes exhibit central roles during development and causal mutations have been found in several human syndromes including limb malformation. Despite their importance, information on how these genes are regulated is lacking. Here, we report on the first identification of bona fide transcriptional enhancers controlling HoxA genes in developing limbs and show that these enhancers are grouped into distinct topological domains at the sub-megabase scale (sub-TADs). We provide evidence that target genes and regulatory elements physically interact with each other through contacts between sub-TADs rather than by the formation of discreet “DNA loops”. Interestingly, there is no obvious relationship between the functional domains of the enhancers within the limb and how they are partitioned among the topological domains, suggesting that sub-TAD formation does not rely on enhancer activity. Moreover, we show that suppressing the transcriptional activity of enhancers does not abrogate their contacts with HoxA genes. Based on these data, we propose a model whereby chromatin architecture defines the functional landscapes of enhancers. From an evolutionary standpoint, our data points to the convergent evolution of HoxA and HoxD regulation in the fin-to-limb transition, one of the major morphological innovations in vertebrates. Hox genes encode transcription factors with crucial roles during development. These genes are grouped in four different clusters names HoxA, B, C, and D. Mutations in genes of the HoxA and D clusters have been found in several human syndromes, affecting in some cases limb development. Despite their essential role and contrary to the genes of the HoxD cluster, little is known about how the HoxA genes are regulated. Here, we identified a large set of regulatory elements controlling HoxA genes during limb development. By studying spatial chromatin organization at the HoxA region, we found that the regulatory elements are spatially clustered regardless of their activity. Clustering of enhancers define tissue-specific chromatin domains that interact specifically with each other and with active genes in the limb. Our findings give support to the emerging concept that chromatin architecture defines the functional properties of genomes. Additionally, our study suggests a common constraint of the chromatin topology in the evolution of HoxA and HoxD regulation in the emergence of the hand/foot, which is one of the major morphological innovations in vertebrates.
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Affiliation(s)
- Soizik Berlivet
- Unité de génétique et développement, Institut de recherches cliniques de Montréal, Montréal, Québec, Canada
- Department of Biochemistry and Goodman Cancer Research Center, McGill University, Montréal, Québec, Canada
| | - Denis Paquette
- Department of Biochemistry and Goodman Cancer Research Center, McGill University, Montréal, Québec, Canada
| | - Annie Dumouchel
- Unité de génétique et développement, Institut de recherches cliniques de Montréal, Montréal, Québec, Canada
| | - David Langlais
- Unité de génétique moléculaire, Institut de recherches cliniques de Montréal, Montréal, Québec, Canada
| | - Josée Dostie
- Department of Biochemistry and Goodman Cancer Research Center, McGill University, Montréal, Québec, Canada
- * E-mail: (JD); (MK)
| | - Marie Kmita
- Unité de génétique et développement, Institut de recherches cliniques de Montréal, Montréal, Québec, Canada
- Department of Medicine, University of Montréal, Montréal, Québec, Canada
- * E-mail: (JD); (MK)
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Gale-Rowe M, Dodds J, Paquette D, Wong T. BRIEF - SYNOPSIS OF THE HUMAN IMMUNODEFICIENCY VIRUS (HIV) SCREENING AND TESTING GUIDE. Can Commun Dis Rep 2013; 39:2-8. [PMID: 31680690 PMCID: PMC6798876 DOI: 10.14745/ccdr.v39i01a01] [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] [Indexed: 11/08/2022]
Abstract
BACKGROUND The Public Health Agency of Canada (PHAC) estimates that, in 2011, 25% of people living with HIV in Canada were undiagnosed. Hesitation to seek testing may arise from fear, stigma and discrimination associated with the HIV diagnosis and related risk behaviours. This guide is designed to complement existing efforts to support care providers involved in HIV testing, in order to reduce the number of undiagnosed HIV infections in Canada. APPROACH PHAC commissioned a literature review and consulted with provinces and territories, and key stakeholders, including people living with HIV/AIDS, academics, nurses, physicians, professional associations, non-governmental organizations, policy-makers, community workers, and legal and ethical experts. As a result, the recommendations outlined in the guide are based on the most up-to-date evidence and expert opinion. SCREENING AND TESTING GUIDE The consideration and discussion of HIV testing should be made a component of routine periodic medical care. Offering HIV testing routinely can help normalize testing, and address the multiple barriers to reducing the number of undiagnosed cases in Canada. Begin with a brief explanation to the client on how HIV is transmitted: through unprotected sex, the sharing of drug-use equipment, and from a pregnant mother to her child. Clients can then consider their own situation and indicate whether they would like to have an HIV test. Upon request, a risk assessment may be conducted. As with other tests, testing is voluntary and verbal consent is sufficient. Negative test results provide an opportunity to remind clients of those practices that can help them maintain an HIV-negative status. There are a range of referrals and resources available to assist clients in reducing at-risk activities and maintaining a negative status. Those who are part of a couple should be encouraged to discuss HIV testing with their partners so they're not unknowingly involved in a serodiscordant relationship. Positive test results should always be provided in person and ideally by the initial care provider who has information resources and support referrals at the ready. An HIV positive diagnosis can be difficult news; it is important to take the time to discuss the results and answer any questions the client might have. Focus on positive messages by highlighting advances in HIV care, treatment and support. Note that HIV is now considered a chronic illness, and people living with HIV can live long, active and healthy lives. Advise the client about strategies for managing HIV and link them to care. Provide risk reduction information to prevent transmission Make the client aware that positive test results will be shared confidentially with the local public health department, which can assist in notifying previous and current partners of the need to be tested while protecting the client's anonymity and privacy. Strategies for informing past, current and future partners can be reviewed. If not already completed with the HIV test, clients should be tested for other STIs, hepatitis B and C, and tuberculosis.
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Affiliation(s)
- M Gale-Rowe
- Members of the PHAC Expert Working group: D Kirby/H Njoo (Co-Chairs), K Clement, I Culbert, B Dickens, J Gahagan, S Grant, J Greer, L Hanvey, E Jackson, C Kazatchkine, B Larke, R MacLachlan, P MacPherson, M Muchenje, B O'Leary, C Panessa, M Ricketts, G Riehl, RW Smith, M Steben, C Swantee, K Thomas, M Tyhndall, M Yudin
| | - J Dodds
- Members of the PHAC Expert Working group: D Kirby/H Njoo (Co-Chairs), K Clement, I Culbert, B Dickens, J Gahagan, S Grant, J Greer, L Hanvey, E Jackson, C Kazatchkine, B Larke, R MacLachlan, P MacPherson, M Muchenje, B O'Leary, C Panessa, M Ricketts, G Riehl, RW Smith, M Steben, C Swantee, K Thomas, M Tyhndall, M Yudin
| | - D Paquette
- Members of the PHAC Expert Working group: D Kirby/H Njoo (Co-Chairs), K Clement, I Culbert, B Dickens, J Gahagan, S Grant, J Greer, L Hanvey, E Jackson, C Kazatchkine, B Larke, R MacLachlan, P MacPherson, M Muchenje, B O'Leary, C Panessa, M Ricketts, G Riehl, RW Smith, M Steben, C Swantee, K Thomas, M Tyhndall, M Yudin
| | - T Wong
- Members of the PHAC Expert Working group: D Kirby/H Njoo (Co-Chairs), K Clement, I Culbert, B Dickens, J Gahagan, S Grant, J Greer, L Hanvey, E Jackson, C Kazatchkine, B Larke, R MacLachlan, P MacPherson, M Muchenje, B O'Leary, C Panessa, M Ricketts, G Riehl, RW Smith, M Steben, C Swantee, K Thomas, M Tyhndall, M Yudin
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13
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Authier S, Paquette D, Gauvin D, Sammut V, Fournier S, Chaurand F, Troncy E. Video-electroencephalography in conscious non human primate using radiotelemetry and computerized analysis: Refinement of a safety pharmacology model. J Pharmacol Toxicol Methods 2009; 60:88-93. [DOI: 10.1016/j.vascn.2008.12.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2008] [Accepted: 12/23/2008] [Indexed: 11/29/2022]
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Ramadevi A, Padmavathy T, Stigall G, Paquette D, Kalachandra S. EVA copolymer matrix for intra-oral delivery of antimicrobial and antiviral agents. J Mater Sci Mater Med 2008; 19:721-7. [PMID: 17619973 DOI: 10.1007/s10856-007-3109-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2006] [Accepted: 05/15/2007] [Indexed: 05/16/2023]
Abstract
Biocompatible ethylene vinyl acetate copolymer (EVA) was utilized to study the release of an antiviral drug (acyclovir (ACY)) and an antimicrobial drug (doxycycline hyclate (DOH)). Release of both drugs from EVA was measured individually and in combination. The effect of drug combination of DOH and ACY is presented. Additionally, the release rate of DOH after coating of the matrix with a different copolymer, in drug-loading with increasing loads of DOH, and with increases in temperature are also presented. The drugs incorporated in EVA films were prepared from the dry sheet obtained by solvent evaporation of polymer casting solutions with drugs. Drug release from the films was examined for about 12 days in distilled water at 37 degrees C. Changes in optical density were followed spectrophotometrically. The combination of ACY and DOH resulted in an increased release of ACY by about three times (P < 0.001) while DOH showed a decrease in rate of about two times compared to the individual release rates (P = 0.008). Increases in drug levels of DOH resulted in increases in drug release rates (P = 0.001). The release rate of DOH increased with temperature (P = .001; 27, 32, 37 and 42 degrees C were studied) and the energy of activation (DeltaE ( not equal) = 56.69 kJ/mol) was calculated using the Arrhenius equation for the diffusion of DOH molecules. Thus, the release rates of drugs were influenced by many factors: drug combination, coating the device, drug-loading, and temperature variation. Therefore it is proposed that controlling these variables should make it possible to obtain therapeutic levels of drugs released from drug loaded polymer, which may be beneficial in treating oral infections.
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Affiliation(s)
- A Ramadevi
- Department of Periodontology, School of Dentistry, University of North Carolina, Chapel Hill, NC 27599, USA
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15
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David ST, Chandran U, Paquette D, Scholten D, Wilson J, Galanis E, Becker M, Crane F, Lester R, Mersereau T, Wong E, Carr D. An observational study of sun and heat protection during Canada Day outdoor celebration, 2003. Chronic Dis Can 2006; 26:59-64. [PMID: 16251011] [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: 05/05/2023]
Abstract
Attendance at summer outdoor mass gatherings may lead to heat- and sun-related illness. The purposes of this study were: (1) to estimate the proportion of people in attendance at the 2003 Canada Day celebration in the National Capital Region who used sun and heat protective items; (2) to identify factors associated with the utilization of these protective items; and (3) to provide research data to public outdoor event organizers when developing evidence-based plans for safer events. A naturalistic observational cross-sectional method was used to gather information at the 2003 Canada Day celebration in the National Capital Region on attendees' demographics, the sun and heat protective items they used and the protective resources available at the event sites. Of the 398 observed attendees, the proportion using any one of the protective items ranged from 3 percent (an open umbrella) to 51.5 percent (sunglasses). Females were more likely to use protective items more than males, and adults more likely than children. Planners of public outdoor events should consider the factors that influence the utilization of sun and heat protective behaviours and the environmental modifications that would allow participants to make safe choices.
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Affiliation(s)
- S T David
- British Columbia Centre for Disease Control, Epidemiology Services, Vancouver, British Columbia V5Z 4R4, Canada.
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16
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Ramesh A, Ludlow JB, Webber RL, Tyndall DA, Paquette D. Evaluation of tuned aperture computed tomography (TACT) in the localization of simulated periodontal defects. Dentomaxillofac Radiol 2001; 30:319-24. [PMID: 11641730 DOI: 10.1038/sj/dmfr/4600635] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2001] [Accepted: 07/10/2001] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVES To compare the diagnostic efficacy of tuned aperture computed tomography (TACT) with the application of the 'buccal object rule' (BOR) in the localization of simulated periodontal defects. METHODS Thirty interproximal sites were selected in fifteen cadaver segments of maxillae and mandible. Artificial periodontal defects were created using round burs and 40% formic acid in the buccal, lingual or mid-buccolingual areas. Eight basis projections were obtained and TACT slices were reconstructed for each region of interest. Two of the basis images were used in application of BOR for localization of the defect. Eight observers scored the location of defects using TACT slices and the paired radiographs separately. Data were analysed using the kappa statistic and ANOVA. RESULTS A mean weighted kappa of 0.14 for localization was obtained with both BOR and TACT. Using ANOVA, there was no significant difference between modality and observer. There was however, a significant difference (P=0.019) between different defect sizes. Both modalities performed better with larger defect sizes. TACT performed slightly better than BOR when the smaller lesions were included; however, with larger lesions, this trend was reversed. CONCLUSIONS The results confirm the relationship between correlation distance (the resultant slice width) and object size in the application of TACT for localization. BOR remains a simple yet effective tool for localization. The clinical significance is not clear considering the low kappa scores obtained with both the modalities.
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Affiliation(s)
- A Ramesh
- Tufts University School of Dental Medicine, Department of General Dentistry, Division of Oral and Maxillofacial Radiology, Boston, MA 02111, USA.
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Abstract
BACKGROUND The use of retinoids in wound healing is increasing. It has been shown that retinoic acid reverses the inhibitory effects of glucocorticoids on wound healing and accelerates the formation of healthy granulation tissue. Pretreatment with tretinoin before epidermal injury such as chemical peeling and dermabrasion has shown accelerated wound healing. Enhanced healing of full-thickness skin wounds has also been demonstrated in early wound healing studies. However, tretinoin therapy can be quite irritating. OBJECTIVE Our purpose was to observe the clinical and histologic effects of topical tretinoin solution 0.05% applied directly to the wound beds of chronic leg ulcerations. METHODS We report on the cases of 5 patients with long-standing leg ulcerations. All were treated with topical tretinoin solution 0.05% applied directly to the wound bed. The tretinoin solution was left in contact with the ulcer bed for a maximum of 10 minutes daily and then rinsed with normal saline. Punch biopsy specimens were obtained from the wound beds at baseline and mid therapy. Standard wound care was continued throughout the study. RESULTS In this study we found that as early as 1 week after treatment with topical tretinoin solution 0.05%, there was increased granulation tissue first noted at the wound's edge. After 4 weeks of therapy with tretinoin, there was further stimulation of granulation tissue, new vascular tissue, and new collagen formation. CONCLUSION Short-contact tretinoin therapy is a novel modality in which to treat chronic ulcers and stimulate the formation of granulation tissue.
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Affiliation(s)
- D Paquette
- Department of Dermatology & Skin Surgery, Roger Williams Medical Center, 50 Maude St., Providence, RI 02908, USA
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18
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Roopchand DE, Lee JM, Shahinian S, Paquette D, Bussey H, Branton PE. Toxicity of human adenovirus E4orf4 protein in Saccharomyces cerevisiae results from interactions with the Cdc55 regulatory B subunit of PP2A. Oncogene 2001; 20:5279-90. [PMID: 11536041 DOI: 10.1038/sj.onc.1204693] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [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: 02/05/2001] [Revised: 04/10/2001] [Accepted: 05/31/2001] [Indexed: 11/08/2022]
Abstract
The E4orf4 protein of human adenovirus induces p53-independent apoptosis, a process that may promote cell death and viral spread. When expressed alone, E4orf4 kills transformed cells but not normal human cells. The only clear target of E4orf4 in mammalian cells is the Balpha (B55) subunit of protein phosphatase 2A (PP2A), a member of one of three classes of regulatory B subunits. Here we report the effects of E4orf4 in Saccharomyces cerevisiae, which encodes two PP2A regulatory B subunits, CDC55 and RTS1, that share homology with mammalian B and B' subunits, respectively. E4orf4 expression was found to be toxic in yeast, resulting in the accumulation of cells in G2/M phase that failed to grow upon removal of E4orf4. E4orf4-expressing yeast also displayed an elongated cell morphology similar to cdc55 deletion strains. E4orf4 required CDC55 to elicit its effect, whereas RTS1 was dispensable. The recruitment of the PP2A holoenzyme by E4orf4 was entirely dependent on Cdc55. These studies indicate that E4orf4-induced apoptosis in mammalian cells and cell death in yeast require functional interactions with B-type subunits of PP2A. However, some inhibition of growth by E4orf4 was observed in the cdc55 strain and with an E4orf4 mutant that fails to interact with Cdc55, indicating that E4orf4 may possess a second Cdc55-independent function affecting cell growth.
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Affiliation(s)
- D E Roopchand
- Department of Biochemistry, McGill University, McIntyre Medical Building, Montreal, Quebec, Canada, H3G 1Y6
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19
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Cooper L, Felton DA, Kugelberg CF, Ellner S, Chaffee N, Molina AL, Moriarty JD, Paquette D, Palmqvist U. A multicenter 12-month evaluation of single-tooth implants restored 3 weeks after 1-stage surgery. Int J Oral Maxillofac Implants 2001; 16:182-92. [PMID: 11324206] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
The time-intensive, multi-step process of dental implant therapy limits patient acceptance. This 3-year prospective multicenter study sought to determine the safety of an expedited therapy that consisted of loading unsplinted maxillary anterior single-tooth implants 3 weeks after 1-stage surgical placement, and determination of the peri-implant cortical bone and mucosal responses to the expedited procedure. Fifty-two patients missing 1 or 2 maxilliary anterior teeth were enrolled in a study approved by the Institutional Committee on Human Subjects Research and based on strict inclusion and exclusion criteria. Astra Tech ST implants placed in a 1-stage procedure were restored 3 weeks later with ST abutments and a provisional crown (baseline); 7 to 9 weeks later, a porcelain-fused-to-metal or all-ceramic crown was cemented. Radiographic and clinical examinations were made at baseline and at 6 and 12 months. Implant survival was recorded. Cortical bone responses and peri-implant mucosal responses were evaluated. Fifty-eight implants were placed. During the 3-week period after implant placement, 4 patients were dismissed because of smoking cigarettes (a protocol deviation), and 1 patient was excluded because of deviation in loading time. Of the remaining 53 implants, 2 failed before definitive crown cementation. The resultant 96.2% survival rate was independent of implant length, tooth position, and bone quality/quantity. The mean change in marginal bone level was 0.4 mm at 12 months. The number of surfaces with plaque decreased from 3.4% at baseline to 0.5% at 12 months. The surfaces with inflammation also decreased. A mean gain in papilla length of 0.61 mm occurred, and a gain in buccal gingiva (x = 0.34 mm) was observed. A high success rate with positive tissue responses was achieved for maxillary anterior unsplinted single-tooth implants placed in a 1-stage surgery and restored at 3 weeks. This 2-component system is suited to a single-stage, rapid loading protocol for esthetic single-tooth replacement.
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Affiliation(s)
- L Cooper
- Department of Prosthodontics, University of North Carolina, 404 Brauer Hall CB#7450, Chapel Hill, North Carolina 27599, USA.
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20
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Paquette D, Snider J, Bouchard F, Olivotto I, Bryant H, Decker K, Doyle G. Performance of screening mammography in organized programs in Canada in 1996. The Database Management Subcommittee to the National Committee for the Canadian Breast Cancer Screening Initiative. CMAJ 2000; 163:1133-8. [PMID: 11079057 PMCID: PMC80245] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
BACKGROUND The results of randomized trials show that breast cancer screening by mammography reduces breast cancer mortality by up to 40% in women aged 50-69 years. Because of these results, by 1998, 22 countries, including Canada, had established population-based organized screening programs. This paper presents the results of screening mammography in 1996 for 7 provincially organized breast cancer screening programs in Canada. METHODS Analyses of interim performance indicators for screening mammography have been calculated from data submitted to the Canadian Breast Cancer Screening database. The data set consisted of data from 7 provincial programs and was limited to mammographic screens for women aged 50-69 years (n = 203,303). Screening outcomes and performance indicators were calculated for abnormalities detected by screening mammography only. RESULTS The abnormal recall rate was 9.5% for first screens and 4.6% for subsequent screens, and the cancer detection rate per 1000 women screened was 6.9 for first screens and 3.8 for subsequent screens. The positive predictive value (i.e., the proportion of women who tested positive by mammography who were found to have breast cancer on screen-initiated diagnostic work-up) increased from 7.2% at the first screen to 8.2% at subsequent screens. Estimated participation rates within organized programs varied from 10.6% to 54.2%, depending on the province. INTERPRETATION For 1996, organized breast cancer screening programs met or exceeded many of the interim measures used in international programs. It is possible to translate the benefits of breast cancer screening by mammography, as demonstrated in randomized trials, into population-based community programs. Screening mammography through organized programs should increase to allow more comprehensive monitoring in Canada.
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Affiliation(s)
- D Paquette
- Centre for Chronic Disease Prevention and Control (Formerly the Laboratory Centre for Disease Control), Health Canada, Ottawa, Ont
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21
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Marcellus RC, Chan H, Paquette D, Thirlwell S, Boivin D, Branton PE. Induction of p53-independent apoptosis by the adenovirus E4orf4 protein requires binding to the Balpha subunit of protein phosphatase 2A. J Virol 2000; 74:7869-77. [PMID: 10933694 PMCID: PMC112317 DOI: 10.1128/jvi.74.17.7869-7877.2000] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Previous studies have indicated that the E4orf4 protein of human adenovirus type 2 (Ad2) induces p53-independent apoptosis. We believe that this process may play a role in cell death and viral spread at the final stages of productive infection. E4orf4 may also be of therapeutic value in treating some diseases, including cancer, through its ability to induce apoptosis when expressed individually. The only previously identified biochemical function of E4orf4 is its ability to associate with the Balpha subunit of protein phosphatase 2A (PP2A). We have used a genetic approach to determine the role of such interactions in E4orf4-induced cell death. E4orf4 deletion mutants were of only limited value, as all were highly defective. We found that E4orf4 proteins from most if not all adenovirus serotypes induced cell death, and thus point mutations were introduced that converted the majority of highly conserved residues to alanines. Such mutants were used to correlate Balpha-subunit binding, association with PP2A activity, and cell killing following the transfection of appropriate cDNAs into p53-null H1299 or C33A cells. The results indicated that binding of the Balpha subunit is essential for induction of cell death, as every mutant that failed to bind efficiently was totally defective for cell killing. This class of mutations (class I) largely involved residues between amino acids 51 and 89. Almost all E4orf4 mutant proteins that associated with PP2A killed cancer cells at high levels; however, several mutants that associated with significant levels of PP2A were defective for killing (class II). Thus, binding of E4orf4 to PP2A is essential for induction of p53-independent apoptosis, but E4orf4 may possess one or more additional functions required for cell killing.
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Affiliation(s)
- R C Marcellus
- GeminX Biotechnologies Inc., Montreal, Quebec, Canada H2W 2M9
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22
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Kriangkum J, Xu B, Gervais C, Paquette D, Jacobs FA, Martin L, Suresh MR. Development and characterization of a bispecific single-chain antibody directed against T cells and ovarian carcinoma. Hybridoma (Larchmt) 2000; 19:33-41. [PMID: 10768839 DOI: 10.1089/027245700315770] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Bispecific antibodies with specificity for tumor antigen and CD3 have been shown to redirect the cytotoxicity of T cells against relevant tumor. Our objective was to generate single-chain bispecific antibodies (bsSCA) that could retarget mouse cytotoxic T lymphocytes (CTL) to destroy human ovarian carcinoma in a xenogeneic setting. A bsSCA, 2C11 x B43.13, was constructed by genetic engineering and expressed in mammalian cells. Molecular characteristics, binding properties, and ability to retarget CTL were studied. Western blot analysis showed that the product is a 65-kDa protein. Purification of antibodies could be done by single-step affinity chromatography using protein L-agarose with an unoptimized yield of 200 microg/L. BsSCA 2C11 x B43.13 was capable of binding to mouse CD3 and human CA125 as detected by FACS analysis of EL4 and OVCAR Nu3H2 cells, respectively. It could also bridge activated splenic T cells and human ovarian carcinoma as demonstrated by a bridge FACS assay. Redirected mouse CTL could mediate human target cell lysis in a 20-h 51Cr release assay despite that they are xenogeneic. Prolonged incubation of redirected CTL and tumor targets resulted in a dramatic reduction in tumor cell number. CD28 co-stimulation enhanced redirected CTL function in both types of assays. BsSCA 2C11 x B43.13 thus can be used as a preclinical immunotherapeutic model for human ovarian cancer in a xenogeneic setting.
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MESH Headings
- Animals
- Antibodies, Bispecific/biosynthesis
- Antibodies, Bispecific/genetics
- Antibodies, Bispecific/isolation & purification
- Antibodies, Bispecific/toxicity
- Antibodies, Monoclonal/biosynthesis
- Antibodies, Monoclonal/genetics
- Antibodies, Monoclonal, Murine-Derived
- CA-125 Antigen/immunology
- CD3 Complex/immunology
- Coculture Techniques
- Cytotoxicity, Immunologic
- Female
- Growth Inhibitors/biosynthesis
- Growth Inhibitors/genetics
- Growth Inhibitors/isolation & purification
- Growth Inhibitors/toxicity
- Humans
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Ovarian Neoplasms/immunology
- Ovarian Neoplasms/pathology
- Ovarian Neoplasms/therapy
- T-Lymphocytes/immunology
- Tumor Cells, Cultured
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Affiliation(s)
- J Kriangkum
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Canada
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23
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Affiliation(s)
- D Paquette
- Department of Dermatology, University of Connecticut Health Center, Farmington 06030, USA
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Mercille S, Jolicoeur P, Gervais C, Paquette D, Mosser DD, Massie B. Dose-dependent reduction of apoptosis in nutrient-limited cultures of NS/0 myeloma cells transfected with the E1B-19K adenoviral gene. Biotechnol Bioeng 1999; 63:516-28. [PMID: 10397808 DOI: 10.1002/(sici)1097-0290(19990605)63:5<516::aid-bit2>3.0.co;2-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
It is now well documented that apoptosis represents the prevalent mode of death in lymphoid cultures and occurs spontaneously in late-exponential phase of batch cultures following nutrient exhaustion. In an attempt to enhance the cell survival of these cell lines, we have initially engineered nonproducing NS/0 myeloma cells with a vector expressing the adenoviral E1B-19K protein. NS/0 cells transfected with E1B-19K were found to be more resistant to apoptosis occurring in the late phase of batch culture and under stressful conditions such as cultivation in glutamine-free medium or following heat shock. In this study, we have characterised a number of NS/0 subclones constitutively expressing different levels of E1B-19K, as well as several subclones in which the expression of E1B-19K was regulated by a tetracycline-controllable gene switch. We have found that a threshold E1B-19K level was required in order to achieve protection against apoptosis. The extent of resistance against cell death induced by nutrient deprivation in glutamine-free medium and in the late phase of batch cultures correlated with the level of E1B-19K expression up to an optimal level where further increases in E1B-19K levels did not result in significant additional protection. To assess the effects of E1B-19K on antibody productivity, an apoptosis-resistant NS/0 clone was then transfected with a chimeric antibody construct. Despite their improved viability, the antibody productivity of E1B-19K clones in batch culture was not significantly improved. Moreover, while the use of E1B-19K considerably delayed cell death, cells eventually died by apoptosis. Surprisingly, E1B-19K had no beneficial effect on the efficiency of fusion of NS/0 myelomas and splenocytes for the generation of hybridoma cells. Furthermore, the resulting hybridomas, although expressing E1B-19K at levels comparable to the myeloma parent, were no longer resistant to apoptosis. This indicates that the ability of E1B-19K to prevent apoptosis is not only dose-dependent but also seems to be cell-type dependent.
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Affiliation(s)
- S Mercille
- Groupe d'Ingénierie des Cellules Animales, Institut de Recherche en Biotechnologie, Conseil National de Recherches du Canada, 6100 Avenue Royalmount, Montréal, PQ, Canada, H4P 2R2
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25
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Langlois R, Paquette D. Increased serum lithium levels due to ketorolac therapy. CMAJ 1994; 150:1455-6. [PMID: 8168010 PMCID: PMC1486635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- R Langlois
- Département de médecine, Hôpital Louis-H. Lafontaine, Montreal, Que
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26
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27
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Paquette D. Object exchange between captive chimpanzees: a case report. Glob Bioeth 1994. [DOI: 10.1080/11287462.1994.10800909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- D. Paquette
- Ecole de Psycho-Education, Université de Montréal, 750 Gouin E., Montréal, Québec, H2C IA6, Canada
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28
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Paquette D. Discovering and learning tool-use for fishing honey by captive chimpanzees. Glob Bioeth 1994. [DOI: 10.1080/11287462.1994.10800910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- D. Paquette
- Ecole de Psycho-Education, Université de Montréal, 750 Gouin E., Montréal, Québec, H2C 1A6, Canada
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29
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30
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31
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Paquette D, Demers F. [Continuous evaluation and autonomy of the student]. Infirm Can 1984; 26:34-6. [PMID: 6569029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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32
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Ménard HA, Paquette D. Skin temperature of the knee: an unrecognized physical sign of inflammatory disease of the knee. Can Med Assoc J 1980; 122:439-40. [PMID: 7370847 PMCID: PMC1801792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Abstract
not available
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