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  • 1
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    Alpha-synuclein blocks ER-Golgi traffic and Rab1 rescues neuron loss in Parkinson's models (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-06-24
    Description: 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.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1983366/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1983366/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cooper, Antony A -- Gitler, Aaron D -- Cashikar, Anil -- Haynes, Cole M -- Hill, Kathryn J -- Bhullar, Bhupinder -- Liu, Kangning -- Xu, Kexiang -- Strathearn, Katherine E -- Liu, Fang -- Cao, Songsong -- Caldwell, Kim A -- Caldwell, Guy A -- Marsischky, Gerald -- Kolodner, Richard D -- Labaer, Joshua -- Rochet, Jean-Christophe -- Bonini, Nancy M -- Lindquist, Susan -- P50 NS038372/NS/NINDS NIH HHS/ -- R01-HG002923/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2006 Jul 21;313(5785):324-8. Epub 2006 Jun 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biological Sciences, University of Missouri-Kansas City, Kansas City, MO 64110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16794039" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Genetically Modified ; Caenorhabditis elegans ; Cell Survival ; Cells, Cultured ; Disease Models, Animal ; Dopamine/physiology ; Drosophila ; Endoplasmic Reticulum/*metabolism ; Gene Expression ; Gene Library ; Golgi Apparatus/*metabolism ; Humans ; Mice ; Nerve Degeneration ; Neurons/cytology/*physiology ; Parkinsonian Disorders/metabolism/pathology/*physiopathology ; Proteasome Endopeptidase Complex/metabolism ; Protein Folding ; *Protein Transport ; Proteins/chemistry/metabolism ; Rats ; Recombinant Fusion Proteins/metabolism ; Saccharomyces cerevisiae/genetics/metabolism ; Saccharomyces cerevisiae Proteins/genetics/metabolism ; alpha-Synuclein/chemistry/genetics/*metabolism ; rab GTP-Binding Proteins/genetics/metabolism ; rab1 GTP-Binding Proteins/genetics/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Functional links between Abeta toxicity, endocytic trafficking, and Alzheimer's disease risk factors in yeast (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-10-29
    Description: Abeta (beta-amyloid peptide) is an important contributor to Alzheimer's disease (AD). We modeled Abeta toxicity in yeast by directing the peptide to the secretory pathway. A genome-wide screen for toxicity modifiers identified the yeast homolog of phosphatidylinositol binding clathrin assembly protein (PICALM) and other endocytic factors connected to AD whose relationship to Abeta was previously unknown. The factors identified in yeast modified Abeta toxicity in glutamatergic neurons of Caenorhabditis elegans and in primary rat cortical neurons. In yeast, Abeta impaired the endocytic trafficking of a plasma membrane receptor, which was ameliorated by endocytic pathway factors identified in the yeast screen. Thus, links between Abeta, endocytosis, and human AD risk factors can be ascertained with yeast as a model system.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3281757/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3281757/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Treusch, Sebastian -- Hamamichi, Shusei -- Goodman, Jessica L -- Matlack, Kent E S -- Chung, Chee Yeun -- Baru, Valeriya -- Shulman, Joshua M -- Parrado, Antonio -- Bevis, Brooke J -- Valastyan, Julie S -- Han, Haesun -- Lindhagen-Persson, Malin -- Reiman, Eric M -- Evans, Denis A -- Bennett, David A -- Olofsson, Anders -- DeJager, Philip L -- Tanzi, Rudolph E -- Caldwell, Kim A -- Caldwell, Guy A -- Lindquist, Susan -- F32 NS067782-02/NS/NINDS NIH HHS/ -- K08 AG034290/AG/NIA NIH HHS/ -- K08AG034290/AG/NIA NIH HHS/ -- P30 AG019610/AG/NIA NIH HHS/ -- P30AG10161/AG/NIA NIH HHS/ -- R01 AG015819/AG/NIA NIH HHS/ -- R01 AG017917/AG/NIA NIH HHS/ -- R01AG15819/AG/NIA NIH HHS/ -- R01AG17917/AG/NIA NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2011 Dec 2;334(6060):1241-5. doi: 10.1126/science.1213210. Epub 2011 Oct 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22033521" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics/*metabolism ; Amyloid beta-Peptides/chemistry/genetics/*metabolism ; Animals ; Animals, Genetically Modified ; Caenorhabditis elegans/cytology/genetics/metabolism ; Cell Membrane/metabolism ; Cells, Cultured ; Clathrin/metabolism ; Cytoskeleton/metabolism ; Disease Susceptibility ; *Endocytosis ; Genetic Association Studies ; Genetic Testing ; Glutamates/metabolism ; Humans ; Monomeric Clathrin Assembly Proteins/genetics/metabolism ; Neurons/physiology ; Peptide Fragments/chemistry/genetics/*metabolism ; Protein Multimerization ; Protein Transport ; Rats ; Risk Factors ; *Saccharomyces cerevisiae/cytology/genetics/growth & development/metabolism ; Saccharomyces cerevisiae Proteins/genetics/metabolism ; Secretory Pathway
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Yeast reveal a "druggable" Rsp5/Nedd4 network that ameliorates alpha-synuclein toxicity in neurons (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-10-26
    Description: alpha-Synuclein (alpha-syn) is a small lipid-binding protein implicated in several neurodegenerative diseases, including Parkinson's disease, whose pathobiology is conserved from yeast to man. There are no therapies targeting these underlying cellular pathologies, or indeed those of any major neurodegenerative disease. Using unbiased phenotypic screens as an alternative to target-based approaches, we discovered an N-aryl benzimidazole (NAB) that strongly and selectively protected diverse cell types from alpha-syn toxicity. Three chemical genetic screens in wild-type yeast cells established that NAB promoted endosomal transport events dependent on the E3 ubiquitin ligase Rsp5/Nedd4. These same steps were perturbed by alpha-syn itself. Thus, NAB identifies a druggable node in the biology of alpha-syn that can correct multiple aspects of its underlying pathology, including dysfunctional endosomal and endoplasmic reticulum-to-Golgi vesicle trafficking.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3993916/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3993916/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tardiff, Daniel F -- Jui, Nathan T -- Khurana, Vikram -- Tambe, Mitali A -- Thompson, Michelle L -- Chung, Chee Yeun -- Kamadurai, Hari B -- Kim, Hyoung Tae -- Lancaster, Alex K -- Caldwell, Kim A -- Caldwell, Guy A -- Rochet, Jean-Christophe -- Buchwald, Stephen L -- Lindquist, Susan -- 5R01GM069530/GM/NIGMS NIH HHS/ -- F32GM099817/GM/NIGMS NIH HHS/ -- F32NS061419/NS/NINDS NIH HHS/ -- GM58160/GM/NIGMS NIH HHS/ -- K01 AG038546/AG/NIA NIH HHS/ -- R01 GM058160/GM/NIGMS NIH HHS/ -- R15 NS075684/NS/NINDS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2013 Nov 22;342(6161):979-83. doi: 10.1126/science.1245321. Epub 2013 Oct 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research (WIBR), Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24158909" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzimidazoles/chemistry/*pharmacology ; Caenorhabditis elegans ; Cells, Cultured ; *Cytoprotection ; Drug Evaluation, Preclinical ; Endosomal Sorting Complexes Required for Transport/*genetics ; Gene Regulatory Networks/*drug effects ; Neurodegenerative Diseases/*metabolism ; Neurons/*drug effects/metabolism ; Neuroprotective Agents/*pharmacology ; Parkinson Disease/metabolism ; Rats ; Saccharomyces cerevisiae/drug effects ; Saccharomyces cerevisiae Proteins/*genetics ; Small Molecule Libraries/chemistry/pharmacology ; Ubiquitin-Protein Ligase Complexes/*genetics ; Ubiquitin-Protein Ligases/*genetics ; alpha-Synuclein/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
    Electronic Resource
    Electronic Resource
    Distribution of lysosomal enzymes in animal tissuesThis research was supported by grant RG-5759 from the National Institutes of Health and project WM-33 of the U. S. Department of Agriculture. (1963)
    Philadelphia : Wiley-Blackwell
    Journal of Cellular and Comparative Physiology 61 (1963), S. 85-92 
    Details
    ISSN: 0095-9898
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1030610109
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  • 5
    Electronic Resource
    Electronic Resource
    Culture of pachytene spermatocytes for analysis of meiosis (1995)
    Chichester [u.a.] : Wiley-Blackwell
    Developmental Genetics 16 (1995), S. 128-139 
    Details
    ISSN: 0192-253X
    Keywords: Spermatogenesis ; meiosis ; synapsis ; synaptonemal complex ; G2-M transition ; okadaic acid ; actinomycin D ; camptothecin ; Life and Medical Sciences ; Genetics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: An impediment to the investigation of mammalian spermatogenic meiosis has been the lack of an appropriate system for experimental manipulation of meiotic prophase cells. We report here the use of a simple system for the short-term culture of pachytene spermatocytes. We have assayed parameters of cell function pertinent to meiotic prophase, namely chromosome pairing and synapsis. During the culture period of 24-48 hr, cells maintained typical pachytene morphology, chromatin condensation patterns, and chromosome pairing, as assessed by light and electron microscopy. Uridine incorporation, monitored by autoradiography, reflected the chromosomal distribution found in vivo in that the autosomal chromosomes were transcriptionally active, while the sex chromosomes were not. Thus features of chromosome pairing and sex chromatin inactivation are maintained in these cultures. We have conducted experiments to demonstrate that cultured pachytene spermatocytes can be useful for the analysis of agents, some of which may be suspected mutagens, that might affect chromosome structure and function during meiosis. Treatment of cells with actinomycin D revealed a differential effect on chromatin condensation in the autosomes versus the sex chromosomes. Carnptothecin, a topoisomerase inhibitor, induced desynapsis of paired chromosomes. Okadaic acid, a phosphatase inhibitor, induced premature metaphase-I condensation of pachytene chromosomes. This last experiment suggests that these cultured cells may be useful for analysis of meiotic cell cycle controls. Taken together, these results demonstrate a culture system that can be useful for analysis of meiotic events as well as in screening for potential mutagenic agents that might affect meiotic chromosome structure and function. © 1995 Wiley-Liss, Inc.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/dvg.1020160206
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