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      Neurodegenerative disease: models, mechanisms, and a new hope

      editorial

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          ABSTRACT

          Neurodegeneration is a feature of many debilitating, incurable diseases that are rapidly rising in prevalence, such as Parkinson's disease. There is an urgent need to develop new and more effective therapeutic strategies to combat these devastating diseases. Models – from cell-based systems, to unicellular organisms, to complex animals – have proven to be a useful tool to help the research community shed light on the mechanisms underlying neurodegenerative diseases, and these advances have now begun to provide promising therapeutic avenues. In this themed issue of Disease Models & Mechanisms, a special collection of articles focused on neurodegenerative diseases is introduced. The collection includes original research articles that provide new insights into the complex pathophysiology of such diseases, revealing candidate biomarkers or therapeutic targets. Some of the articles describe a new disease model that enables deeper exploration of key mechanisms. We also present a series of reviews that highlight some of the recent translational advances made in studies of neurodegenerative diseases. In this Editorial, we summarize the articles featured in this collection, emphasizing the impact that model-based studies have made in this exciting area of research.

          Abstract

          Summary: This Editorial introduces a new Special Collection, ‘Neurodegeneration: from models to mechanisms to therapies’, providing a summary of the research and review articles published in this launch issue, as well as highlighting some of DMM's most-read neurodegeneration-related articles from recent issues.

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          Most cited references34

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          Alpha-synuclein blocks ER-Golgi traffic and Rab1 rescues neuron loss in Parkinson's models.

          Alpha-synuclein (alphaSyn) misfolding is associated with several devastating neurodegenerative disorders, including Parkinson's disease (PD). In yeast cells and in neurons alphaSyn accumulation is cytotoxic, but little is known about its normal function or pathobiology. The earliest defect following alphaSyn expression in yeast was a block in endoplasmic reticulum (ER)-to-Golgi vesicular trafficking. In a genomewide screen, the largest class of toxicity modifiers were proteins functioning at this same step, including the Rab guanosine triphosphatase Ypt1p, which associated with cytoplasmic alphaSyn inclusions. Elevated expression of Rab1, the mammalian YPT1 homolog, protected against alphaSyn-induced dopaminergic neuron loss in animal models of PD. Thus, synucleinopathies may result from disruptions in basic cellular functions that interface with the unique biology of particular neurons to make them especially vulnerable.
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            Ageing, neurodegeneration and brain rejuvenation.

            Although systemic diseases take the biggest toll on human health and well-being, increasingly, a failing brain is the arbiter of a death preceded by a gradual loss of the essence of being. Ageing, which is fundamental to neurodegeneration and dementia, affects every organ in the body and seems to be encoded partly in a blood-based signature. Indeed, factors in the circulation have been shown to modulate ageing and to rejuvenate numerous organs, including the brain. The discovery of such factors, the identification of their origins and a deeper understanding of their functions is ushering in a new era in ageing and dementia research.
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              • Article: not found

              Aggregation and motor neuron toxicity of an ALS-linked SOD1 mutant independent from wild-type SOD1.

              Analysis of transgenic mice expressing familial amyotrophic lateral sclerosis (ALS)-linked mutations in the enzyme superoxide dismutase (SOD1) have shown that motor neuron death arises from a mutant-mediated toxic property or properties. In testing the disease mechanism, both elimination and elevation of wild-type SOD1 were found to have no effect on mutant-mediated disease, which demonstrates that the use of SOD mimetics is unlikely to be an effective therapy and raises the question of whether toxicity arises from superoxide-mediated oxidative stress. Aggregates containing SOD1 were common to disease caused by different mutants, implying that coaggregation of an unidentified essential component or components or aberrant catalysis by misfolded mutants underlies a portion of mutant-mediated toxicity.
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                Author and article information

                Journal
                Dis Model Mech
                Dis Model Mech
                DMM
                dmm
                Disease Models & Mechanisms
                The Company of Biologists Ltd
                1754-8403
                1754-8411
                1 May 2017
                1 May 2017
                : 10
                : 5 , SPECIAL COLLECTION: NEURODEGENERATION: FROM MODELS TO MECHANISMS TO THERAPIES
                : 499-502
                Affiliations
                [1 ]Department of Genetics, Stanford University School of Medicine , Stanford, CA 94404, USA
                [2 ]Reviews Editor, Disease Models & Mechanisms, The Company of Biologists , Cambridge CB24 9LF, UK
                [3 ]Department of Biochemistry & Biophysics, Perelman School of Medicine at the University of Pennsylvania , Philadelphia, PA 19104, USA
                Author notes
                Author information
                http://orcid.org/0000-0001-8603-1526
                http://orcid.org/0000-0001-5269-8533
                Article
                DMM030205
                10.1242/dmm.030205
                5451177
                28468935
                e39452c0-88b8-47a1-b379-bf2a5b58a86e
                © 2017. Published by The Company of Biologists Ltd

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.

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                Editorial

                Molecular medicine
                Molecular medicine

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