{"title":"What have we learned so far on the molecular pathogenesis of Werner syndrome using mutant mouse models of this human progeroid disorder?","authors":"Michel Lebel , F. Brad Johnson","doi":"10.1016/j.ddmod.2018.12.002","DOIUrl":"10.1016/j.ddmod.2018.12.002","url":null,"abstract":"<div><p><span><span><span>Werner syndrome (WS) is a rare </span>autosomal recessive disorder<span> characterized by genomic instability and the premature onset of several age-associated phenotypes. The protein defective in WS patients (WRN) is a helicase/exonuclease involved in DNA replication, repair, </span></span>telomere maintenance, and transcription. This review focuses on experimental mouse models that have been generated to understand the molecular impact of different mutations in the </span><em>Wrn</em><span><span> orthologue on oxidative stress, inflammation, telomere maintenance, and transcription in different tissues. Appropriate crosses between Wrn </span>mutant mice<span><span> and transgenic or knockout models of genes important in cell cycle or DNA repair genes have highlighted the importance of the WRN protein in </span>biological processes<span> regulating cell proliferation, senescence, and apoptosis. Finally, this short review recognizes the limitations and translational values of such mouse models.</span></span></span></p></div>","PeriodicalId":39774,"journal":{"name":"Drug Discovery Today: Disease Models","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ddmod.2018.12.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88171470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A primer on ageing studies in mice: Considerations, opportunities and limitations","authors":"Paul K. Potter","doi":"10.1016/j.ddmod.2019.01.002","DOIUrl":"10.1016/j.ddmod.2019.01.002","url":null,"abstract":"<div><p>One of the major challenges currently facing health care providers is an ageing population that is spending more time in ill-health. Many ageing individuals have multiple and complex needs which affect the ability to treat them effectively, which also has a significant impact on their own independence and quality of life. There are many aspects of testing interventions to improve health in old age in pre-clinical models; from breeding strategies to measurements of outcomes. Here we provide a brief overview of the major considerations to take into account in such studies and the limitations or challenges we face in these studies.</p></div>","PeriodicalId":39774,"journal":{"name":"Drug Discovery Today: Disease Models","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ddmod.2019.01.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76779546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yang Heng, Bart J.L. Eggen, Erik W.G.M. Boddeke, Susanne M. Kooistra
{"title":"Mouse models of central nervous system ageing","authors":"Yang Heng, Bart J.L. Eggen, Erik W.G.M. Boddeke, Susanne M. Kooistra","doi":"10.1016/j.ddmod.2018.10.002","DOIUrl":"10.1016/j.ddmod.2018.10.002","url":null,"abstract":"<div><p>Ageing is accompanied by decreased overall fitness and performance. Studying brain ageing in humans is challenging due to limited or no access to healthy tissue, limited opportunities for interventions and complicated confounding factors. The generation of mouse ageing models with uniform genetic backgrounds significantly contributed to understanding (brain) ageing at the molecular level. Research has focused on evolutionarily conserved mechanisms or pathways that control ageing to facilitate data extrapolation to humans. Understanding how these pathways contribute to pathological ageing may help us understand human central nervous system (CNS) ageing and assist in the development of possible therapeutic targets. In this review, we focus on the functional consequences and pathological changes in the CNS of ageing mouse models.</p></div>","PeriodicalId":39774,"journal":{"name":"Drug Discovery Today: Disease Models","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ddmod.2018.10.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81107525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Refinement of the MPTP model for Parkinson’s disease in the marmoset","authors":"Ingrid H.C.H.M Philippens","doi":"10.1016/j.ddmod.2018.10.003","DOIUrl":"10.1016/j.ddmod.2018.10.003","url":null,"abstract":"<div><p><span>The increasing prevalence of age-related neurodegenerative diseases<span> is a growing concern for the ageing societies. Parkinson’s disease is a major progressive motor disorder of the brain caused by specific degeneration of the dopamine-producing neurons in the </span></span><em>substantia nigra</em><span><span><span>, which govern the control of muscle movement. Despite intensive research efforts, no cure has been found, and we still have to rely on symptom control treatment. The paucity of valid preclinical models that faithfully reproduce clinical and pathogenic features of neurodegenerative diseases is a main cause of the lack of effective treatments. The MPTP-treated common marmoset monkey can bridge this gap by providing an appropriate </span>animal model for construct, face and predictive validity. The </span>neurotoxin<span> MPTP<span> causes selective cell death in the dopamine neurons. However, there is still a debate about the level of discomfort in the MPTP primate model<span>. Refinement of the MPTP marmoset model-by lowering the dosage and increasing the interval-prevents the interference of direct effects of the toxin MPTP on clinical signs that might have an impact on the outcome of the result. This will also improve the discomfort for the animal as the progression of the clinical features develop slowly over time, which also mimicking the human counterpart of PD. Finetuning of the MPTP-induction protocol may, therefore, improve the wellbeing of the animal and development of rational, effective treatments for the multi-factorial pathogenic mechanisms of PD.</span></span></span></span></p></div>","PeriodicalId":39774,"journal":{"name":"Drug Discovery Today: Disease Models","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ddmod.2018.10.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82094734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Joe K. Chouhan , Susan B. Fowler , Carl I. Webster , Jessica L. Teeling
{"title":"The ME7 prion model of neurodegeneration as a tool to understand and target neuroinflammation in Alzheimer’s disease","authors":"Joe K. Chouhan , Susan B. Fowler , Carl I. Webster , Jessica L. Teeling","doi":"10.1016/j.ddmod.2018.10.004","DOIUrl":"10.1016/j.ddmod.2018.10.004","url":null,"abstract":"<div><p>To develop disease-modifying therapies for Alzheimer’s disease (AD), an understanding of the pathways that lead to synaptic damage and neuronal cell death is required. The ME7 prion mouse model shares hallmarks of human neurodegenerative diseases<span><span> and has a well-defined disease progression<span> that can be monitored non-invasively through changes in behaviour. In addition, a strong involvement of neuroinflammation<span> in ME7 disease progression and systemic inflammatory challenge has provided rationale to study and target cytokines in human AD patients. Furthermore, susceptibility of the model to acute cognitive deficits generated a model of delirium has supported human dementia studies. Thus, the ME7 prion model provides a translatable model of </span></span></span>neurodegeneration and neuroinflammation that could provide validation of potential treatments against the inflammatory response during neurodegeneration.</span></p></div>","PeriodicalId":39774,"journal":{"name":"Drug Discovery Today: Disease Models","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ddmod.2018.10.004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82196392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modelling amyotrophic lateral sclerosis in mice","authors":"Jodie Stephenson , Sandra Amor","doi":"10.1016/j.ddmod.2018.10.001","DOIUrl":"10.1016/j.ddmod.2018.10.001","url":null,"abstract":"<div><p>Amyotrophic lateral sclerosis (ALS) is an incurable neurodegenerative disease for which there is limited treatment. Riluzole, that extends life by several months, has been the only ALS drug for 22 years until the recent FDA approval of Edaravone. Despite many promising compounds identified in preclinical studies in the SOD1<sup>G93A</sup> mouse model, few have translated to the clinic. The failure to translate therapies in animals to people with ALS has questioned the validity of the SOD1<sup>G93A</sup> mouse model, especially since these mutations are only present in 1–2% of people with ALS. Here, we review the mouse models that are key for drug development in ALS. The key features of each genetic subgroup are discussed and the models are compared. We also propose how the models could be further developed to better model ALS and thus more effectively advance ALS drug discovery. We recommend the use of a wider range of ALS mouse models in drug development to represent the broader ALS population and subgroups.</p></div>","PeriodicalId":39774,"journal":{"name":"Drug Discovery Today: Disease Models","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ddmod.2018.10.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82908180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Stella Nyamoya , Felix Schweiger , Markus Kipp , Tanja Hochstrasser
{"title":"Cuprizone as a model of myelin and axonal damage","authors":"Stella Nyamoya , Felix Schweiger , Markus Kipp , Tanja Hochstrasser","doi":"10.1016/j.ddmod.2018.09.003","DOIUrl":"10.1016/j.ddmod.2018.09.003","url":null,"abstract":"<div><p><span>Axonal damage is believed to be the main factor contributing to disease progression<span><span> in multiple sclerosis<span><span> patients. The degeneration of axons could be the result of several different harmful events including inflammation and demyelination. Details of the mechanisms leading to axonal damage are, however, unknown, and distinct preclinical </span>animal models can be used to study mechanisms operant during </span></span>axonal injury<span> development and progression. In this review article, we focus on the cuprizone model, a model for toxic, non-autoimmune-mediated demyelination. We discuss the relevance of this model to investigate demyelination and the </span></span></span>pathophysiology<span> of axonal degeneration. We further discuss the applicability of “cuprizone-combination” models to investigate the intricate interplay of innate and adaptive immune responses during demyelination and axonal degeneration.</span></p></div>","PeriodicalId":39774,"journal":{"name":"Drug Discovery Today: Disease Models","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ddmod.2018.09.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86139808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
George A. McCanney, Michael J. Whitehead, Michael A. McGrath, Susan L. Lindsay, Susan C. Barnett
{"title":"Neural cell cultures to study spinal cord injury","authors":"George A. McCanney, Michael J. Whitehead, Michael A. McGrath, Susan L. Lindsay, Susan C. Barnett","doi":"10.1016/j.ddmod.2018.10.005","DOIUrl":"10.1016/j.ddmod.2018.10.005","url":null,"abstract":"<div><p>There are great challenges involved in identifying potential therapies for the repair of spinal cord injury (SCI). It is well accepted that not one, but a combination of therapeutic strategies will be required to effectively repair the damage. However, identifying novel therapeutics is hindered by the lack of reliable methods available that facilitate high throughput screening of numerous compounds. While the use of animals provides an important means for testing new therapies, <em>in vivo</em> models of SCI can be time consuming and require the use of large cohorts of animals. In this review, we have focused on three aspects of repair following SCI (1) neurite outgrowth, (2) glial scar and (3) remyelination. No <em>in vitro</em> model encapsulates all the features of SCI and we discuss the limitations and virtues of the various cultures, which range from individual cell-types through to complex co-cultures. We discuss how these cultures can be used as a moderate throughput screen to identify novel therapeutics for CNS repair before being verified in animal models.</p></div>","PeriodicalId":39774,"journal":{"name":"Drug Discovery Today: Disease Models","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ddmod.2018.10.005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82307487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modelling in miniature: Using Drosophila melanogaster to study human neurodegeneration","authors":"Roald Lambrechts , Anita Faber , Ody Sibon","doi":"10.1016/j.ddmod.2018.09.004","DOIUrl":"10.1016/j.ddmod.2018.09.004","url":null,"abstract":"<div><p><span><span><span><span>Despite great advances in clinical diagnostics, genetics and </span>molecular biology, </span>neurodegenerative diseases like Parkinson’s disease (PD), Alzheimer’s disease (AD) and Huntington’s disease (HD) still pose great challenges, both in terms of understanding their </span>pathophysiology as well as their treatment. Organisms able to adequately model the intricacies of the disease mechanism and respose to potential treatment, whilst not compromising on ease of handling, studying and manipulating in order to study them, represent the holy grail of translational biology and medicine. Here, we review the suitability of the fruit fly, </span><span><em>Drosophila melanogaster</em></span><span>, as a model organism in the field of neurodegeneration. We briefly summarize the history of scientific research concerning this organism, review the molecular, genetic and pharmacological toolbox available and we discuss the ways this toolbox has been applied to research in neurodegeneration. Finally, by reviewing some findings in the fruit fly which were subsequently translated to and validated in other organisms on their way to the clinic, the power and robustness of </span><em>Drosophila melanogaster</em> is highlighted.</p></div>","PeriodicalId":39774,"journal":{"name":"Drug Discovery Today: Disease Models","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ddmod.2018.09.004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88838815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}