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Salmina AB, Malinovskaya NA, Morgun AV, Khilazheva ED, Uspenskaya YA, Illarioshkin SN. Reproducibility of developmental neuroplasticity in in vitro brain tissue models. Rev Neurosci 2022; 33:531-554. [PMID: 34983132 DOI: 10.1515/revneuro-2021-0137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/13/2021] [Indexed: 11/15/2022]
Abstract
The current prevalence of neurodevelopmental, neurodegenerative diseases, stroke and brain injury stimulates studies aimed to identify new molecular targets, to select the drug candidates, to complete the whole set of preclinical and clinical trials, and to implement new drugs into routine neurological practice. Establishment of protocols based on microfluidics, blood-brain barrier- or neurovascular unit-on-chip, and microphysiological systems allowed improving the barrier characteristics and analyzing the regulation of local microcirculation, angiogenesis, and neurogenesis. Reconstruction of key mechanisms of brain development and even some aspects of experience-driven brain plasticity would be helpful in the establishment of brain in vitro models with the highest degree of reliability. Activity, metabolic status and expression pattern of cells within the models can be effectively assessed with the protocols of system biology, cell imaging, and functional cell analysis. The next generation of in vitro models should demonstrate high scalability, 3D or 4D complexity, possibility to be combined with other tissues or cell types within the microphysiological systems, compatibility with bio-inks or extracellular matrix-like materials, achievement of adequate vascularization, patient-specific characteristics, and opportunity to provide high-content screening. In this review, we will focus on currently available and prospective brain tissue in vitro models suitable for experimental and preclinical studies with the special focus on models enabling 4D reconstruction of brain tissue for the assessment of brain development, brain plasticity, and drug kinetics.
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Affiliation(s)
- Alla B Salmina
- Laboratory of Experimental Brain Cytology, Research Center of Neurology, Volokolamskoe Highway 80, Moscow, 125367, Russia.,Research Institute of Molecular Medicine & Pathobiochemistry, Prof. V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, P. Zhelenzyaka str., 1, Krasnoyarsk 660022, Russia
| | - Natalia A Malinovskaya
- Research Institute of Molecular Medicine & Pathobiochemistry, Prof. V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, P. Zhelenzyaka str., 1, Krasnoyarsk 660022, Russia
| | - Andrey V Morgun
- Department of Ambulatory Pediatrics, Prof. V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, P. Zheleznyaka str., 1, Krasnoyarsk 660022, Russia
| | - Elena D Khilazheva
- Research Institute of Molecular Medicine & Pathobiochemistry, Prof. V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, P. Zhelenzyaka str., 1, Krasnoyarsk 660022, Russia
| | - Yulia A Uspenskaya
- Research Institute of Molecular Medicine & Pathobiochemistry, Prof. V.F. Voino-Yasenetsky Krasnoyarsk State Medical University, P. Zhelenzyaka str., 1, Krasnoyarsk 660022, Russia
| | - Sergey N Illarioshkin
- Department of Brain Studies, Research Center of Neurology, Volokolamskoe Highway, 80, Moscow 125367, Russia
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2
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Pons-Espinal M, Blasco-Agell L, Consiglio A. Dissecting the non-neuronal cell contribution to Parkinson's disease pathogenesis using induced pluripotent stem cells. Cell Mol Life Sci 2021; 78:2081-2094. [PMID: 33210214 PMCID: PMC7966189 DOI: 10.1007/s00018-020-03700-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 10/10/2020] [Accepted: 10/31/2020] [Indexed: 01/02/2023]
Abstract
Parkinson's disease (PD) is an incurable age-linked neurodegenerative disease with characteristic movement impairments that are caused by the progressive loss of dopamine-containing neurons (DAn) within the substantia nigra pars compacta. It has been suggested that misfolded protein aggregates together with neuroinflammation and glial reactivity, may impact nerve cell function, leading to neurodegeneration and diseases, such as PD. However, not many studies have been able to examine the role of human glial cells in the pathogenesis of PD. With the advent of induced pluripotent stem cell (iPSC) technology, it is now possible to reprogram human somatic cells to pluripotency and to generate viable human patient-specific DA neurons and glial cells, providing a tremendous opportunity for dissecting cellular and molecular pathological mechanisms occurring at early stages of PD. This reviews will report on recent work using human iPSC and 3D brain organoid models showing that iPSC technology can be used to recapitulate PD-relevant disease-associated phenotypes, including protein aggregation, cell death or loss of neurite complexity and deficient autophagic vacuoles clearance and focus on the recent co-culture systems that are revealing new insights into the complex interactions that occur between different brain cell types during neurodegeneration. Consequently, such advances are the key to improve our understanding of PD pathology and generate potential targets for new therapies aimed at curing PD patients.
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Affiliation(s)
- Meritxell Pons-Espinal
- Department of Pathology and Experimental Therapeutics, Bellvitge University Hospital-IDIBELL, 08908, Hospitalet de Llobregat, Spain.
- Institute of Biomedicine (IBUB) of the University of Barcelona (UB), 08028, Barcelona, Spain.
| | - Lucas Blasco-Agell
- Department of Pathology and Experimental Therapeutics, Bellvitge University Hospital-IDIBELL, 08908, Hospitalet de Llobregat, Spain
- Institute of Biomedicine (IBUB) of the University of Barcelona (UB), 08028, Barcelona, Spain
| | - Antonella Consiglio
- Department of Pathology and Experimental Therapeutics, Bellvitge University Hospital-IDIBELL, 08908, Hospitalet de Llobregat, Spain.
- Institute of Biomedicine (IBUB) of the University of Barcelona (UB), 08028, Barcelona, Spain.
- Department of Molecular and Translational Medicine, University of Brescia, Piazza del Mercato, 15, 25121, Brescia, BS, Italy.
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3
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Penney J, Ralvenius WT, Tsai LH. Modeling Alzheimer's disease with iPSC-derived brain cells. Mol Psychiatry 2020; 25:148-167. [PMID: 31391546 PMCID: PMC6906186 DOI: 10.1038/s41380-019-0468-3] [Citation(s) in RCA: 240] [Impact Index Per Article: 60.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 04/10/2019] [Accepted: 05/13/2019] [Indexed: 12/21/2022]
Abstract
Alzheimer's disease is a devastating neurodegenerative disorder with no cure. Countless promising therapeutics have shown efficacy in rodent Alzheimer's disease models yet failed to benefit human patients. While hope remains that earlier intervention with existing therapeutics will improve outcomes, it is becoming increasingly clear that new approaches to understand and combat the pathophysiology of Alzheimer's disease are needed. Human induced pluripotent stem cell (iPSC) technologies have changed the face of preclinical research and iPSC-derived cell types are being utilized to study an array of human conditions, including neurodegenerative disease. All major brain cell types can now be differentiated from iPSCs, while increasingly complex co-culture systems are being developed to facilitate neuroscience research. Many cellular functions perturbed in Alzheimer's disease can be recapitulated using iPSC-derived cells in vitro, and co-culture platforms are beginning to yield insights into the complex interactions that occur between brain cell types during neurodegeneration. Further, iPSC-based systems and genome editing tools will be critical in understanding the roles of the numerous new genes and mutations found to modify Alzheimer's disease risk in the past decade. While still in their relative infancy, these developing iPSC-based technologies hold considerable promise to push forward efforts to combat Alzheimer's disease and other neurodegenerative disorders.
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Affiliation(s)
- Jay Penney
- Department of Brain and Cognitive Sciences, Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - William T Ralvenius
- Department of Brain and Cognitive Sciences, Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Li-Huei Tsai
- Department of Brain and Cognitive Sciences, Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
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Leung AW, Li JYH. An adherent-cell depletion technique to generate human neural progenitors and neurons. J Cell Physiol 2019; 234:19933-19941. [PMID: 30972783 DOI: 10.1002/jcp.28591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 03/18/2019] [Indexed: 11/06/2022]
Abstract
Existing methodologies to produce human neural stem cells and neurons from embryonic stem cells frequently involve multistep processes and the use of complex and expensive media components, cytokines or small molecules. Here, we report a simple technique to generate human neuroepithelial progenitors and neurons by periodic mechanical dissection and adherent-cell depletion on regular cell-culture grade plastic surfaces. This neural induction technique does not employ growth factors, small molecules or peptide inhibitors, apart from those present in serum-free supplements. Suggestive of their central nervous system origin, we found that neural progenitors formed by this technique expressed radial glia markers, and, when differentiated, expressed TUBB3, RBFOX3 (NeuN) and serotonin, but not markers for peripheral neurons. With these data, we postulate that incorporation of periodic mechanical stimuli and plastic surface-mediated cell selection could improve and streamline existing human neuron production protocols.
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Affiliation(s)
- Alan W Leung
- Department of Genetics and Genome Sciences, University of Connecticut School of Medicine, Farmington, Connecticut
| | - James Y H Li
- Department of Genetics and Genome Sciences, University of Connecticut School of Medicine, Farmington, Connecticut
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Little D, Ketteler R, Gissen P, Devine MJ. Using stem cell-derived neurons in drug screening for neurological diseases. Neurobiol Aging 2019; 78:130-141. [PMID: 30925301 DOI: 10.1016/j.neurobiolaging.2019.02.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 02/07/2019] [Accepted: 02/09/2019] [Indexed: 12/22/2022]
Abstract
Induced pluripotent stem cells and their derivatives have become an important tool for researching disease mechanisms. It is hoped that they could be used to discover new therapies by providing the most reliable and relevant human in vitro disease models for drug discovery. This review will summarize recent efforts to use stem cell-derived neurons for drug screening. We also explain the current hurdles to using these cells for high-throughput pharmaceutical screening and developments that may help overcome these hurdles. Finally, we critically discuss whether induced pluripotent stem cell-derived neurons will come to fruition as a model that is regularly used to screen for drugs to treat neurological diseases.
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Affiliation(s)
- Daniel Little
- MRC Laboratory for Molecular Cell Biology, University College London, London, UK.
| | - Robin Ketteler
- MRC Laboratory for Molecular Cell Biology, University College London, London, UK
| | - Paul Gissen
- MRC Laboratory for Molecular Cell Biology, University College London, London, UK
| | - Michael J Devine
- MRC Laboratory for Molecular Cell Biology, University College London, London, UK; Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
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BMP-Responsive Protease HtrA1 Is Differentially Expressed in Astrocytes and Regulates Astrocytic Development and Injury Response. J Neurosci 2018; 38:3840-3857. [PMID: 29483282 DOI: 10.1523/jneurosci.2031-17.2018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 01/23/2018] [Accepted: 01/29/2018] [Indexed: 11/21/2022] Open
Abstract
Astrocytes perform a wide array of physiological functions, including structural support, ion exchange, and neurotransmitter uptake. Despite this diversity, molecular markers that label subpopulations of astrocytes are limited, and mechanisms that generate distinct astrocyte subtypes remain unclear. Here we identified serine protease high temperature requirement A 1 (HtrA1), a bone morphogenetic protein 4 signaling regulated protein, as a novel marker of forebrain astrocytes, but not of neural stem cells, in adult mice of both sexes. Genetic deletion of HtrA1 during gliogenesis accelerates astrocyte differentiation. In addition, ablation of HtrA1 in cultured astrocytes leads to altered chondroitin sulfate proteoglycan expression and inhibition of neurite extension, along with elevated levels of transforming growth factor-β family proteins. Brain injury induces HtrA1 expression in reactive astrocytes, and loss of HtrA1 leads to an impairment in wound closure accompanied by increased proliferation of endothelial and immune cells. Our findings demonstrate that HtrA1 is differentially expressed in adult mouse forebrain astrocytes, and that HtrA1 plays important roles in astrocytic development and injury response.SIGNIFICANCE STATEMENT Astrocytes, an abundant cell type in the brain, perform a wide array of physiological functions. Although characterized as morphologically and functionally diverse, molecular markers that label astrocyte subtypes or signaling pathways that lead to their diversity remain limited. Here, after examining the expression profile of astrocytes generated in response to bone morphogenetic protein signaling, we identify high temperature requirement A 1 (HtrA1) as an astrocyte-specific marker that is differentially expressed in distinct adult mouse brain regions. HtrA1 is a serine protease that has been linked to cerebral autosomal recessive arteriopathy with subcortical infarcts and leukoencephalopathy, a small blood vessel disease in humans. Understanding the role of HtrA1 during development and after injury will provide insights into how distinct astrocyte populations are generated and their unique roles in injury and disease.
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Dimitrion P, Zhi Y, Clayton D, Apodaca GL, Wilcox MR, Johnson JW, Nimgaonkar V, D'Aiuto L. Low-Density Neuronal Cultures from Human Induced Pluripotent Stem Cells. MOLECULAR NEUROPSYCHIATRY 2017; 3:28-36. [PMID: 28879199 DOI: 10.1159/000476034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 04/21/2017] [Indexed: 12/31/2022]
Abstract
Induced pluripotent stem cell (iPSC)-based technologies offer an unprecedented possibility to investigate defects occurring during neuronal differentiation in neuropsychiatric and neurodevelopmental disorders, but the density and intricacy of intercellular connections in neuronal cultures challenge currently available analytic methods. Low-density neuronal cultures facilitate the morphometric and functional analysis of neurons. We describe a differentiation protocol to generate low-density neuronal cultures (∼2,500 neurons/cm2) from human iPSC-derived neural stem cells/early neural progenitor cells. We generated low-density cultures using cells from 3 individuals. We also evaluated the morphometric features of neurons derived from 2 of these individuals, one harboring a microdeletion on chromosome 15q11.2 and the other without the microdeletion. An approximately 7.5-fold increase in the density of dendritic filopodia was observed in the neurons with the microdeletion, consistent with previous reports. Low-density neuronal cultures enable facile and unbiased comparisons of iPSC-derived neurons from different individuals or clones.
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Affiliation(s)
- Peter Dimitrion
- Department of Psychiatry, Western Psychiatric Institute and Clinic, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Yun Zhi
- Department of Pharmacology and Pharmaceutical Sciences, School of Medicine, Tsinghua University, Beijing, China
| | - Dennis Clayton
- Division of Renal-Electrolyte, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Department of Cell Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Gerard L Apodaca
- Division of Renal-Electrolyte, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.,Department of Cell Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Madeleine R Wilcox
- Department of Neuroscience and Center for Neuroscience, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Jon W Johnson
- Department of Neuroscience and Center for Neuroscience, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Vishwajit Nimgaonkar
- Department of Psychiatry, Western Psychiatric Institute and Clinic, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.,Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Leonardo D'Aiuto
- Department of Psychiatry, Western Psychiatric Institute and Clinic, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
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Messenger RNAs localized to distal projections of human stem cell derived neurons. Sci Rep 2017; 7:611. [PMID: 28377585 PMCID: PMC5428799 DOI: 10.1038/s41598-017-00676-w] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/08/2017] [Indexed: 12/26/2022] Open
Abstract
The identification of mRNAs in distal projections of model organisms has led to the discovery of multiple proteins that are locally synthesized for functional roles such as axon guidance, injury signaling and regeneration. The extent to which local protein synthesis is conserved in human neurons is unknown. Here we used compartmentalized microfluidic chambers to characterize the transcriptome of distal projections of human embryonic stem cells differentiated using a protocol which enriched for glutamatergic neurons (hESC-neurons). Using gene expression analysis, we identified mRNAs proportionally enriched in these projections, representing a functionally unique local transcriptome as compared to the human neuronal transcriptome inclusive of somata. Further, we found that the most abundant mRNAs within these hESC-neuron projections were functionally similar to the axonal transcriptome of rat cortical neurons. We confirmed the presence of two well characterized axonal mRNAs in model organisms, β-actin and GAP43, within hESC-neuron projections using multiplexed single molecule RNA-FISH. Additionally, we report the novel finding that oxytocin mRNA localized to these human projections and confirmed its localization using RNA-FISH. This new evaluation of mRNA within human projections provides an important resource for studying local mRNA translation and has the potential to reveal both conserved and unique translation dependent mechanisms.
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Chandrasekaran A, Avci HX, Leist M, Kobolák J, Dinnyés A. Astrocyte Differentiation of Human Pluripotent Stem Cells: New Tools for Neurological Disorder Research. Front Cell Neurosci 2016; 10:215. [PMID: 27725795 PMCID: PMC5035736 DOI: 10.3389/fncel.2016.00215] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 08/30/2016] [Indexed: 12/22/2022] Open
Abstract
Astrocytes have a central role in brain development and function, and so have gained increasing attention over the past two decades. Consequently, our knowledge about their origin, differentiation and function has increased significantly, with new research showing that astrocytes cultured alone or co-cultured with neurons have the potential to improve our understanding of various central nervous system diseases, such as amyotrophic lateral sclerosis, Alzheimer’s disease, or Alexander disease. The generation of astrocytes derived from pluripotent stem cells (PSCs) opens up a new area for studying neurologic diseases in vitro; these models could be exploited to identify and validate potential drugs by detecting adverse effects in the early stages of drug development. However, as it is now known that a range of astrocyte populations exist in the brain, it will be important in vitro to develop standardized protocols for the in vitro generation of astrocyte subsets with defined maturity status and phenotypic properties. This will then open new possibilities for co-cultures with neurons and the generation of neural organoids for research purposes. The aim of this review article is to compare and summarize the currently available protocols and their strategies to generate human astrocytes from PSCs. Furthermore, we discuss the potential role of human-induced PSCs derived astrocytes in disease modeling.
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Affiliation(s)
| | - Hasan X Avci
- BioTalentum LtdGödöllő, Hungary; Department of Medical Chemistry, University of SzegedSzeged, Hungary
| | - Marcel Leist
- Dorenkamp-Zbinden Chair, Faculty of Mathematics and Sciences, University of Konstanz Konstanz, Germany
| | | | - Andras Dinnyés
- BioTalentum LtdGödöllő, Hungary; Molecular Animal Biotechnology Laboratory, Szent Istvan UniversityGödöllő, Hungary
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White RE, Barry DS. The emerging roles of transplanted radial glial cells in regenerating the central nervous system. Neural Regen Res 2015; 10:1548-51. [PMID: 26692835 PMCID: PMC4660731 DOI: 10.4103/1673-5374.165317] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Affiliation(s)
- Robin E White
- Biology Department, Westfield State University, Westfield, MA, USA
| | - Denis S Barry
- Department of Anatomy, Trinity Biomedical Sciences Institute, Trinity College Dublin, University of Dublin, Ireland
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Kleiderman S, Sá JV, Teixeira AP, Brito C, Gutbier S, Evje LG, Hadera MG, Glaab E, Henry M, Sachinidis A, Alves PM, Sonnewald U, Leist M. Functional and phenotypic differences of pure populations of stem cell-derived astrocytes and neuronal precursor cells. Glia 2015; 64:695-715. [DOI: 10.1002/glia.22954] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 11/19/2015] [Accepted: 11/23/2015] [Indexed: 12/19/2022]
Affiliation(s)
- Susanne Kleiderman
- The Doerenkamp-Zbinden Chair of in-Vitro Toxicology and Biomedicine/Alternatives to Animal Experimentation; University of Konstanz; Konstanz Germany
| | - João V. Sá
- Instituto de Tecnologia Química e Biológica António Xavier; Universidade Nova de Lisboa; Av. da República 2780-157 Oeiras Portugal
- IBET; Instituto de Biologia Experimental e Tecnológica; Apartado 12 2780-901 Oeiras Portugal
| | - Ana P. Teixeira
- Instituto de Tecnologia Química e Biológica António Xavier; Universidade Nova de Lisboa; Av. da República 2780-157 Oeiras Portugal
- IBET; Instituto de Biologia Experimental e Tecnológica; Apartado 12 2780-901 Oeiras Portugal
| | - Catarina Brito
- Instituto de Tecnologia Química e Biológica António Xavier; Universidade Nova de Lisboa; Av. da República 2780-157 Oeiras Portugal
- IBET; Instituto de Biologia Experimental e Tecnológica; Apartado 12 2780-901 Oeiras Portugal
| | - Simon Gutbier
- The Doerenkamp-Zbinden Chair of in-Vitro Toxicology and Biomedicine/Alternatives to Animal Experimentation; University of Konstanz; Konstanz Germany
| | - Lars G. Evje
- Department of Earth Science, University of Bergen; Allégaten 41 5007 Bergen Norway
| | - Mussie G. Hadera
- Department of Pharmacy; College of Health Sciences; Mekelle University, Tigray Ethiopia
| | - Enrico Glaab
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg; Belvaux L-4366 Luxembourg
| | - Margit Henry
- Institute of Neurophysiology and Center for Molecular Medicine, Cologne (CMMC), University of Cologne; Cologne Germany
| | - Agapios Sachinidis
- Institute of Neurophysiology and Center for Molecular Medicine, Cologne (CMMC), University of Cologne; Cologne Germany
| | - Paula M. Alves
- Instituto de Tecnologia Química e Biológica António Xavier; Universidade Nova de Lisboa; Av. da República 2780-157 Oeiras Portugal
- IBET; Instituto de Biologia Experimental e Tecnológica; Apartado 12 2780-901 Oeiras Portugal
| | - Ursula Sonnewald
- Department of Drug Design and Pharmacology; Faculty of Health and Medical Sciences; Copenhagen Denmark
- Department of Neuroscience; Norwegian University of Science and Technology; Faculty of Medicine; Trondheim Norway
| | - Marcel Leist
- The Doerenkamp-Zbinden Chair of in-Vitro Toxicology and Biomedicine/Alternatives to Animal Experimentation; University of Konstanz; Konstanz Germany
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