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De Loof H, De Win E, Moens N, Verhoeven V, Van Royen P, Kreps EO, Philips H. Overprescribing of Topical Ocular Corticosteroids and Antibiotics in Out-of-Hours Primary Care in Belgium. Drug Healthc Patient Saf 2021; 13:229-232. [PMID: 34849033 PMCID: PMC8627259 DOI: 10.2147/dhps.s339141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 11/03/2021] [Indexed: 11/23/2022] Open
Abstract
Prescribing patterns by primary care physicians concerning ophthalmic problems were studied using the iCAREdata, a database containing information from the out-of-hours care setting in the Flanders region of Belgium. A very high percentage of prescribed ophthalmic medication was topical antibiotics (89.4%) with tobramycin as the most prevalent substance and in clear conflict with the prevailing guidelines. In addition, a very substantial fraction of prescribed medication contained corticosteroids (30.4%). This is a potentially unsafe option within the technical infrastructure of this setting, which limits the diagnostic possibilities concerning viral infections or preexisting glaucoma risk. We conclude that more efforts are required to limit unnecessary and inappropriate prescribing behavior to further promote patient safety.
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Affiliation(s)
- Hans De Loof
- Laboratory of Physiopharmacology, Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium
| | - Ellen De Win
- Laboratory of Physiopharmacology, Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium
| | - Nathalie Moens
- Laboratory of Physiopharmacology, Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium
| | - Veronique Verhoeven
- Research Group, Primary and Interdisciplinary Care (ELIZA), Department Family Medicine and Population Health (FAMPOP) University of Antwerp, Antwerp, Belgium
| | - Paul Van Royen
- Research Group, Primary and Interdisciplinary Care (ELIZA), Department Family Medicine and Population Health (FAMPOP) University of Antwerp, Antwerp, Belgium
| | - Elke O Kreps
- Department of Ophthalmology, Ghent University Hospital, Ghent, Belgium
| | - Hilde Philips
- Research Group, Primary and Interdisciplinary Care (ELIZA), Department Family Medicine and Population Health (FAMPOP) University of Antwerp, Antwerp, Belgium
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Vigilante A, Laddach A, Moens N, Meleckyte R, Leha A, Ghahramani A, Culley OJ, Kathuria A, Hurling C, Vickers A, Wiseman E, Tewary M, Zandstra PW, Durbin R, Fraternali F, Stegle O, Birney E, Luscombe NM, Danovi D, Watt FM. Identifying Extrinsic versus Intrinsic Drivers of Variation in Cell Behavior in Human iPSC Lines from Healthy Donors. Cell Rep 2019; 26:2078-2087.e3. [PMID: 30784590 PMCID: PMC6381787 DOI: 10.1016/j.celrep.2019.01.094] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [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: 06/18/2018] [Revised: 12/11/2018] [Accepted: 01/24/2019] [Indexed: 01/08/2023] Open
Abstract
Large cohorts of human induced pluripotent stem cells (iPSCs) from healthy donors are a potentially powerful tool for investigating the relationship between genetic variants and cellular behavior. Here, we integrate high content imaging of cell shape, proliferation, and other phenotypes with gene expression and DNA sequence datasets from over 100 human iPSC lines. By applying a dimensionality reduction approach, Probabilistic Estimation of Expression Residuals (PEER), we extracted factors that captured the effects of intrinsic (genetic concordance between different cell lines from the same donor) and extrinsic (cell responses to different fibronectin concentrations) conditions. We identify genes that correlate in expression with intrinsic and extrinsic PEER factors and associate outlier cell behavior with genes containing rare deleterious non-synonymous SNVs. Our study, thus, establishes a strategy for examining the genetic basis of inter-individual variability in cell behavior.
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Affiliation(s)
- Alessandra Vigilante
- Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK; European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK; The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK; UCL Genetics Institute, Department of Genetics, Evolution and Environment, University College London, Gower Street, London WC1E 6BT, UK
| | - Anna Laddach
- Randall Division, King's College London, New Hunts House, Great Maze Pond, London SE1 9RT, UK
| | - Nathalie Moens
- Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Ruta Meleckyte
- Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Andreas Leha
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton CB10 1SA, UK
| | - Arsham Ghahramani
- Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK; The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Oliver J Culley
- Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Annie Kathuria
- Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Chloe Hurling
- Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Alice Vickers
- Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Erika Wiseman
- Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Mukul Tewary
- Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK; School of Biomedical Engineering, The University of British Columbia, 2222 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada; Michael Smith Laboratories, The University of British Columbia, 2185 East Mall, Vancouver, BC V6T 1Z4, Canada
| | - Peter W Zandstra
- School of Biomedical Engineering, The University of British Columbia, 2222 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada; Michael Smith Laboratories, The University of British Columbia, 2185 East Mall, Vancouver, BC V6T 1Z4, Canada
| | - Richard Durbin
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton CB10 1SA, UK; Department of Genetics, University of Cambridge, Downing Street, Cambridge CB2 3EH, UK
| | - Franca Fraternali
- Randall Division, King's College London, New Hunts House, Great Maze Pond, London SE1 9RT, UK
| | - Oliver Stegle
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Ewan Birney
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Nicholas M Luscombe
- The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK; UCL Genetics Institute, Department of Genetics, Evolution and Environment, University College London, Gower Street, London WC1E 6BT, UK
| | - Davide Danovi
- Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK.
| | - Fiona M Watt
- Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK.
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Moens N, Runciman R, Holmberg D, Gibson T. Evaluation of a short glass fibre-reinforced tube as a model for cat femur for biomechanical testing of orthopaedic implants. Vet Comp Orthop Traumatol 2018. [DOI: 10.1055/s-0037-1617361] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryThe biomechanical testing of tubes made of third generation short glass fibre-reinforced (SGFR) material approximating cat femurs was performed in order to determine their suitability as cat femur surrogates for the biomechanical testing of orthopaedic implants. The tubes were tested in compression, three-point bending, notch testing, and screw pullout. Thin walled (B1-tubes) had a 13% lower maximum load to failure, a 19% higher maximum strength and a 13% lower elastic modulus compared to cat femurs tested in compression. B1-tubes maximum load to failure in threepoint bending and screw pullout strength were considerably lower compared to cat femurs (29% and 63%, respectively). Notch testing was not performed on B1-tubes due to low bending strength. Thicker walled (B2-tubes) had a 23% higher maximum load to failure, a 10% higher maximum strength and a 21% lower elastic modulus compared to cat femurs tested in compression. The comparison of B2-tubes and cat femurs in three-point bending revealed a 7% increase in maximum load to failure for the B2-tubes. Drilled B2-tubes (notch testing) were weaker with a 30% lower load to failure compared to cat femurs. A screw pullout comparison of B2-tubes and cat femurs revealed a 2% increase in maximum load to failure for the B2-tubes. These tubes were intended to provide a model as a suitable surrogate for cat femurs for testing the bending strength of various orthopaedic constructs involving plates and screws. Testing revealed that third generation SGFR tubes were not suitable for these purposes and emphasizes the need to carefully evaluate the suitability of any model.
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Kilpinen H, Goncalves A, Leha A, Afzal V, Alasoo K, Ashford S, Bala S, Bensaddek D, Casale FP, Culley OJ, Danecek P, Faulconbridge A, Harrison PW, Kathuria A, McCarthy D, McCarthy SA, Meleckyte R, Memari Y, Moens N, Soares F, Mann A, Streeter I, Agu CA, Alderton A, Nelson R, Harper S, Patel M, White A, Patel SR, Clarke L, Halai R, Kirton CM, Kolb-Kokocinski A, Beales P, Birney E, Danovi D, Lamond AI, Ouwehand WH, Vallier L, Watt FM, Durbin R, Stegle O, Gaffney DJ. Common genetic variation drives molecular heterogeneity in human iPSCs. Nature 2017; 546:370-375. [PMID: 28489815 PMCID: PMC5524171 DOI: 10.1038/nature22403] [Citation(s) in RCA: 344] [Impact Index Per Article: 49.1] [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: 05/11/2016] [Accepted: 04/27/2017] [Indexed: 02/07/2023]
Abstract
Technology utilizing human induced pluripotent stem cells (iPS cells) has enormous potential to provide improved cellular models of human disease. However, variable genetic and phenotypic characterization of many existing iPS cell lines limits their potential use for research and therapy. Here we describe the systematic generation, genotyping and phenotyping of 711 iPS cell lines derived from 301 healthy individuals by the Human Induced Pluripotent Stem Cells Initiative. Our study outlines the major sources of genetic and phenotypic variation in iPS cells and establishes their suitability as models of complex human traits and cancer. Through genome-wide profiling we find that 5-46% of the variation in different iPS cell phenotypes, including differentiation capacity and cellular morphology, arises from differences between individuals. Additionally, we assess the phenotypic consequences of genomic copy-number alterations that are repeatedly observed in iPS cells. In addition, we present a comprehensive map of common regulatory variants affecting the transcriptome of human pluripotent cells.
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Affiliation(s)
- Helena Kilpinen
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Angela Goncalves
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Andreas Leha
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Vackar Afzal
- Centre for Gene Regulation &Expression, School of Life Sciences, University of Dundee, Dundee, DD1 5EH, UK
| | - Kaur Alasoo
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Sofie Ashford
- Department of Haematology, University of Cambridge, Cambridge Biomedical Campus, Cambridge CB2 0XY, UK
| | - Sendu Bala
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Dalila Bensaddek
- Centre for Gene Regulation &Expression, School of Life Sciences, University of Dundee, Dundee, DD1 5EH, UK
| | - Francesco Paolo Casale
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Oliver J Culley
- Centre for Stem Cells &Regenerative Medicine, King's College London, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Petr Danecek
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Adam Faulconbridge
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Peter W Harrison
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Annie Kathuria
- Centre for Stem Cells &Regenerative Medicine, King's College London, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Davis McCarthy
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
- St Vincent's Institute of Medical Research, 41 Victoria Parade, Fitzroy, Victoria 3065, Australia
| | - Shane A McCarthy
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Ruta Meleckyte
- Centre for Stem Cells &Regenerative Medicine, King's College London, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Yasin Memari
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Nathalie Moens
- Centre for Stem Cells &Regenerative Medicine, King's College London, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Filipa Soares
- Wellcome Trust and MRC Cambridge Stem Cell Institute and Biomedical Research Centre, Anne McLaren Laboratory, Department of Surgery, University of Cambridge, Cambridge CB2 0SZ, UK
| | - Alice Mann
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Ian Streeter
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Chukwuma A Agu
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Alex Alderton
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Rachel Nelson
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Sarah Harper
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Minal Patel
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Alistair White
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Sharad R Patel
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Laura Clarke
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Reena Halai
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Christopher M Kirton
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Anja Kolb-Kokocinski
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Philip Beales
- UCL Great Ormond Street Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Ewan Birney
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Davide Danovi
- Centre for Stem Cells &Regenerative Medicine, King's College London, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Angus I Lamond
- Centre for Gene Regulation &Expression, School of Life Sciences, University of Dundee, Dundee, DD1 5EH, UK
| | - Willem H Ouwehand
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
- Department of Haematology, University of Cambridge, Cambridge Biomedical Campus, Cambridge CB2 0XY, UK
- NHS Blood and Transplant, Cambridge Biomedical Campus, Cambridge CB2 0PT, UK
| | - Ludovic Vallier
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
- Wellcome Trust and MRC Cambridge Stem Cell Institute and Biomedical Research Centre, Anne McLaren Laboratory, Department of Surgery, University of Cambridge, Cambridge CB2 0SZ, UK
| | - Fiona M Watt
- Centre for Stem Cells &Regenerative Medicine, King's College London, Tower Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT, UK
| | - Richard Durbin
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Oliver Stegle
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Daniel J Gaffney
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SA, UK
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Kilpinen H, Goncalves A, Leha A, Afzal V, Alasoo K, Ashford S, Bala S, Bensaddek D, Casale FP, Culley OJ, Danecek P, Faulconbridge A, Harrison PW, Kathuria A, McCarthy D, McCarthy SA, Meleckyte R, Memari Y, Moens N, Soares F, Mann A, Streeter I, Agu CA, Alderton A, Nelson R, Harper S, Patel M, White A, Patel SR, Clarke L, Halai R, Kirton CM, Kolb-Kokocinski A, Beales P, Birney E, Danovi D, Lamond AI, Ouwehand WH, Vallier L, Watt FM, Durbin R, Stegle O, Gaffney DJ. Corrigendum: Common genetic variation drives molecular heterogeneity in human iPSCs. Nature 2017; 546:686. [PMID: 28614302 DOI: 10.1038/nature23012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
This corrects the article DOI: 10.1038/nature22403.
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Skelding A, Valverde A, Sinclair M, Thomason J, Moens N. Anatomical characterization of the brachial plexus in dogs and comparison of the traditional block technique to 2 novel approaches. Vet Anaesth Analg 2017. [DOI: 10.1016/j.vaa.2016.12.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Leha A, Moens N, Meleckyte R, Culley OJ, Gervasio MK, Kerz M, Reimer A, Cain SA, Streeter I, Folarin A, Stegle O, Kielty CM, Durbin R, Watt FM, Danovi D. A high-content platform to characterise human induced pluripotent stem cell lines. Methods 2015; 96:85-96. [PMID: 26608109 PMCID: PMC4773406 DOI: 10.1016/j.ymeth.2015.11.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/11/2015] [Accepted: 11/17/2015] [Indexed: 01/16/2023] Open
Abstract
iPSCs show inter/intra-line/donor-variability hampering characterisation. HipSci generates, banks and provides iPSCs from hundreds of individual donors. iPSCs respond to different human plasma fibronectin concentrations on 96-well assays. Phenotypic features: cell number, proliferation, morphology and intercellular adhesion. The methodologies described can be tailored for disease-modelling and other cell types.
Induced pluripotent stem cells (iPSCs) provide invaluable opportunities for future cell therapies as well as for studying human development, modelling diseases and discovering therapeutics. In order to realise the potential of iPSCs, it is crucial to comprehensively characterise cells generated from large cohorts of healthy and diseased individuals. The human iPSC initiative (HipSci) is assessing a large panel of cell lines to define cell phenotypes, dissect inter- and intra-line and donor variability and identify its key determinant components. Here we report the establishment of a high-content platform for phenotypic analysis of human iPSC lines. In the described assay, cells are dissociated and seeded as single cells onto 96-well plates coated with fibronectin at three different concentrations. This method allows assessment of cell number, proliferation, morphology and intercellular adhesion. Altogether, our strategy delivers robust quantification of phenotypic diversity within complex cell populations facilitating future identification of the genetic, biological and technical determinants of variance. Approaches such as the one described can be used to benchmark iPSCs from multiple donors and create novel platforms that can readily be tailored for disease modelling and drug discovery.
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Affiliation(s)
- Andreas Leha
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Nathalie Moens
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Ruta Meleckyte
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Oliver J Culley
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Mia K Gervasio
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Maximilian Kerz
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK; NIHR Biomedical Research Centre for Mental Health Informatics Core, King's College London, De Crespigny Park, London SE5 8AF, UK
| | - Andreas Reimer
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Stuart A Cain
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, United Kingdom
| | - Ian Streeter
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Amos Folarin
- NIHR Biomedical Research Centre for Mental Health Informatics Core, King's College London, De Crespigny Park, London SE5 8AF, UK
| | - Oliver Stegle
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Cay M Kielty
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, United Kingdom
| | | | - Richard Durbin
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SD, UK
| | - Fiona M Watt
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Davide Danovi
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK.
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8
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Viswanathan P, Gaskell T, Moens N, Culley OJ, Hansen D, Gervasio MKR, Yeap YJ, Danovi D. Human pluripotent stem cells on artificial microenvironments: a high content perspective. Front Pharmacol 2014; 5:150. [PMID: 25071572 PMCID: PMC4078252 DOI: 10.3389/fphar.2014.00150] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 06/10/2014] [Indexed: 12/17/2022] Open
Abstract
Self-renewing stem cell populations are increasingly considered as resources for cell therapy and tools for drug discovery. Human pluripotent stem (hPS) cells in particular offer a virtually unlimited reservoir of homogeneous cells and can be differentiated toward diverse lineages. Many diseases show impairment in self-renewal or differentiation, abnormal lineage choice or other aberrant cell behavior in response to chemical or physical cues. To investigate these responses, there is a growing interest in the development of specific assays using hPS cells, artificial microenvironments and high content analysis. Several hurdles need to be overcome that can be grouped into three areas: (i) availability of robust, homogeneous, and consistent cell populations as a starting point; (ii) appropriate understanding and use of chemical and physical microenvironments; (iii) development of assays that dissect the complexity of cell populations in tissues while mirroring specific aspects of their behavior. Here we review recent progress in the culture of hPS cells and we detail the importance of the environment surrounding the cells with a focus on synthetic material and suitable high content analysis approaches. The technologies described, if properly combined, have the potential to create a paradigm shift in the way diseases are modeled and drug discovery is performed.
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Affiliation(s)
- Priyalakshmi Viswanathan
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, Guy’s Hospital, King’s College LondonLondon, UK
| | | | - Nathalie Moens
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, Guy’s Hospital, King’s College LondonLondon, UK
| | - Oliver J. Culley
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, Guy’s Hospital, King’s College LondonLondon, UK
| | - Darrick Hansen
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, Guy’s Hospital, King’s College LondonLondon, UK
| | - Mia K. R. Gervasio
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, Guy’s Hospital, King’s College LondonLondon, UK
| | - Yee J. Yeap
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, Guy’s Hospital, King’s College LondonLondon, UK
| | - Davide Danovi
- HipSci Cell Phenotyping, Centre for Stem Cells and Regenerative Medicine, Guy’s Hospital, King’s College LondonLondon, UK
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9
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Hussain W, Moens N, Veraitch FS, Hernandez D, Mason C, Lye GJ. Reproducible culture and differentiation of mouse embryonic stem cells using an automated microwell platform. Biochem Eng J 2013; 77:246-257. [PMID: 23956681 PMCID: PMC3741632 DOI: 10.1016/j.bej.2013.05.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 04/16/2013] [Accepted: 05/16/2013] [Indexed: 02/05/2023]
Abstract
We describe an automated platform for hands-free ESC expansion and differentiation. Key bioprocess variables were investigated to optimize culture inductions. Cell growth was more consistent with automated ESC expansion than manual culture. ESCs expanded on the automated platform maintained high levels of pluripotency. Cells expressed βIII-tubulin after successful automated neuronal differentiation.
The use of embryonic stem cells (ESCs) and their progeny in high throughput drug discovery and regenerative medicine will require production at scale of well characterized cells at an appropriate level of purity. The adoption of automated bioprocessing techniques offers the possibility to overcome the lack of consistency and high failure rates seen with current manual protocols. To build the case for increased use of automation this work addresses the key question: “can an automated system match the quality of a highly skilled and experienced person working manually?” To answer this we first describe an integrated automation platform designed for the ‘hands-free’ culture and differentiation of ESCs in microwell formats. Next we outline a framework for the systematic investigation and optimization of key bioprocess variables for the rapid establishment of validatable Standard Operating Procedures (SOPs). Finally the experimental comparison between manual and automated bioprocessing is exemplified by expansion of the murine Oct-4-GiP ESC line over eight sequential passages with their subsequent directed differentiation into neural precursors. Our results show that ESCs can be effectively maintained and differentiated in a highly reproducible manner by the automated system described. Statistical analysis of the results for cell growth over single and multiple passages shows up to a 3-fold improvement in the consistency of cell growth kinetics with automated passaging. The quality of the cells produced was evaluated using a panel of biological markers including cell growth rate and viability, nutrient and metabolite profiles, changes in gene expression and immunocytochemistry. Automated processing of the ESCs had no measurable negative effect on either their pluripotency or their ability to differentiate into the three embryonic germ layers. Equally important is that over a 6-month period of culture without antibiotics in the medium, we have not had any cases of culture contamination. This study thus confirms the benefits of adopting automated bioprocess routes to produce cells for therapy and for use in basic discovery research.
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Affiliation(s)
- Waqar Hussain
- The Advanced Centre for Biochemical Engineering, Department of Biochemical Engineering, University College London, Torrington Place, London WC1E 7JE, UK
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