1
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Pal A, Kretner B, Abo-Rady M, Glaβ H, Dash BP, Naumann M, Japtok J, Kreiter N, Dhingra A, Heutink P, Böckers TM, Günther R, Sterneckert J, Hermann A. Concomitant gain and loss of function pathomechanisms in C9ORF72 amyotrophic lateral sclerosis. Life Sci Alliance 2021; 4:e202000764. [PMID: 33619157 PMCID: PMC7918691 DOI: 10.26508/lsa.202000764] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 05/04/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 12/02/2022] Open
Abstract
Intronic hexanucleotide repeat expansions (HREs) in C9ORF72 are the most frequent genetic cause of amyotrophic lateral sclerosis, a devastating, incurable motoneuron (MN) disease. The mechanism by which HREs trigger pathogenesis remains elusive. The discovery of repeat-associated non-ATG (RAN) translation of dipeptide repeat proteins (DPRs) from HREs along with reduced exonic C9ORF72 expression suggests gain of toxic functions (GOFs) through DPRs versus loss of C9ORF72 functions (LOFs). Through multiparametric high-content (HC) live profiling in spinal MNs from induced pluripotent stem cells and comparison to mutant FUS and TDP43, we show that HRE C9ORF72 caused a distinct, later spatiotemporal appearance of mainly proximal axonal organelle motility deficits concomitant to augmented DNA double-strand breaks (DSBs), RNA foci, DPRs, and apoptosis. We show that both GOFs and LOFs were necessary to yield the overall C9ORF72 pathology. Increased RNA foci and DPRs concurred with onset of axon trafficking defects, DSBs, and cell death, although DSB induction itself did not phenocopy C9ORF72 mutants. Interestingly, the majority of LOF-specific DEGs were shared with HRE-mediated GOF DEGs. Finally, C9ORF72 LOF was sufficient-albeit to a smaller extent-to induce premature distal axonal trafficking deficits and increased DSBs.
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Affiliation(s)
- Arun Pal
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Benedikt Kretner
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- Center for Regenerative Therapies TU Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Masin Abo-Rady
- Center for Regenerative Therapies TU Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Hannes Glaβ
- Translational Neurodegeneration Section "Albrecht-Kossel," Department of Neurology, and Center for Transdisciplinary Neuroscience (CTNR), University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Banaja P Dash
- Translational Neurodegeneration Section "Albrecht-Kossel," Department of Neurology, and Center for Transdisciplinary Neuroscience (CTNR), University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Marcel Naumann
- Translational Neurodegeneration Section "Albrecht-Kossel," Department of Neurology, and Center for Transdisciplinary Neuroscience (CTNR), University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Julia Japtok
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Nicole Kreiter
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Ashutosh Dhingra
- German Center for Neurodegenerative Diseases (DZNE), Genome Biology of Neurodegenerative Diseases, Tübingen, Germany
| | - Peter Heutink
- German Center for Neurodegenerative Diseases (DZNE), Genome Biology of Neurodegenerative Diseases, Tübingen, Germany
- Department for Neurodegenerative Diseases, Hertie Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany
| | - Tobias M Böckers
- Institute for Anatomy and Cell Biology, Ulm University, Ulm, Germany
| | - René Günther
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany
| | - Jared Sterneckert
- Center for Regenerative Therapies TU Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section "Albrecht-Kossel," Department of Neurology, and Center for Transdisciplinary Neuroscience (CTNR), University Medical Center Rostock, University of Rostock, Rostock, Germany
- German Center for Neurodegenerative Diseases (DZNE) Rostock/Greifswald, Rostock, Germany
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2
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Bursch F, Kalmbach N, Naujock M, Staege S, Eggenschwiler R, Abo-Rady M, Japtok J, Guo W, Hensel N, Reinhardt P, Boeckers TM, Cantz T, Sterneckert J, Van Den Bosch L, Hermann A, Petri S, Wegner F. Altered calcium dynamics and glutamate receptor properties in iPSC-derived motor neurons from ALS patients with C9orf72, FUS, SOD1 or TDP43 mutations. Hum Mol Genet 2020; 28:2835-2850. [PMID: 31108504 DOI: 10.1093/hmg/ddz107] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/02/2019] [Accepted: 05/14/2019] [Indexed: 12/13/2022] Open
Abstract
The fatal neurodegenerative disease amyotrophic lateral sclerosis (ALS) is characterized by a profound loss of motor neurons (MNs). Until now only riluzole minimally extends life expectancy in ALS, presumably by inhibiting glutamatergic neurotransmission and calcium overload of MNs. Therefore, the aim of this study was to investigate the glutamate receptor properties and key aspects of intracellular calcium dynamics in induced pluripotent stem cell (iPSC)-derived MNs from ALS patients with C9orf72 (n = 4 cell lines), fused in sarcoma (FUS) (n = 9), superoxide dismutase 1 (SOD1) (n = 3) or transactive response DNA-binding protein 43 (TDP43) (n = 3) mutations as well as healthy (n = 7 cell lines) and isogenic controls (n = 3). Using calcium imaging, we most frequently observed spontaneous transients in mutant C9orf72 MNs. Basal intracellular calcium levels and α-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA)-induced signal amplitudes were elevated in mutant TDP43 MNs. Besides, a majority of mutant TDP43 MNs responded to 3.5-dihydroxyphenylglycine as metabotropic glutamate receptor agonist. Quantitative real-time PCR demonstrated significantly increased expression levels of AMPA and kainate receptors in mutant FUS cells compared to healthy and isogenic controls. Furthermore, the expression of kainate receptors and voltage gated calcium channels in mutant C9orf72 MNs as well as metabotropic glutamate receptors in mutant SOD1 cells was markedly elevated compared to controls. Our data of iPSC-derived MNs from familial ALS patients revealed several mutation-specific alterations in glutamate receptor properties and calcium dynamics that could play a role in ALS pathogenesis and may lead to future translational strategies with individual stratification of neuroprotective ALS treatments.
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Affiliation(s)
- Franziska Bursch
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany.,Center of Systems Neuroscience, Hannover, Germany
| | - Norman Kalmbach
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany
| | - Maximilian Naujock
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany
| | - Selma Staege
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany.,Center of Systems Neuroscience, Hannover, Germany
| | - Reto Eggenschwiler
- Research Group Translational Hepatology and Stem Cell Biology, Cluster of Excellence REBIRTH, Hannover Medical School, 30625 Hannover, Germany
| | | | - Julia Japtok
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany
| | - Wenting Guo
- Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, BE-3000 Leuven, Belgium.,Laboratory of Neurobiology, VIB-Center for Brain & Disease Research, BE-3000 Leuven, Belgium
| | - Niko Hensel
- Institute of Neuroanatomy, Hannover Medical School, 30625 Hanover, Germany
| | | | - Tobias M Boeckers
- Institute of Anatomy and Cell Biology, Ulm University, 89081 Ulm, Germany
| | - Tobias Cantz
- Research Group Translational Hepatology and Stem Cell Biology, Cluster of Excellence REBIRTH, Hannover Medical School, 30625 Hannover, Germany
| | | | - Ludo Van Den Bosch
- Department of Neurosciences, Experimental Neurology and Leuven Brain Institute (LBI), KU Leuven-University of Leuven, BE-3000 Leuven, Belgium.,Laboratory of Neurobiology, VIB-Center for Brain & Disease Research, BE-3000 Leuven, Belgium
| | - Andreas Hermann
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany
| | - Susanne Petri
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany.,Center of Systems Neuroscience, Hannover, Germany
| | - Florian Wegner
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany.,Center of Systems Neuroscience, Hannover, Germany
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3
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Abo-Rady M, Kalmbach N, Pal A, Schludi C, Janosch A, Richter T, Freitag P, Bickle M, Kahlert AK, Petri S, Stefanov S, Glass H, Staege S, Just W, Bhatnagar R, Edbauer D, Hermann A, Wegner F, Sterneckert JL. Knocking out C9ORF72 Exacerbates Axonal Trafficking Defects Associated with Hexanucleotide Repeat Expansion and Reduces Levels of Heat Shock Proteins. Stem Cell Reports 2020; 14:390-405. [PMID: 32084385 PMCID: PMC7066330 DOI: 10.1016/j.stemcr.2020.01.010] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 01/18/2020] [Accepted: 01/21/2020] [Indexed: 12/13/2022] Open
Abstract
In amyotrophic lateral sclerosis (ALS) motor neurons (MNs) undergo dying-back, where the distal axon degenerates before the soma. The hexanucleotide repeat expansion (HRE) in C9ORF72 is the most common genetic cause of ALS, but the mechanism of pathogenesis is largely unknown with both gain- and loss-of-function mechanisms being proposed. To better understand C9ORF72-ALS pathogenesis, we generated isogenic induced pluripotent stem cells. MNs with HRE in C9ORF72 showed decreased axonal trafficking compared with gene corrected MNs. However, knocking out C9ORF72 did not recapitulate these changes in MNs from healthy controls, suggesting a gain-of-function mechanism. In contrast, knocking out C9ORF72 in MNs with HRE exacerbated axonal trafficking defects and increased apoptosis as well as decreased levels of HSP70 and HSP40, and inhibition of HSPs exacerbated ALS phenotypes in MNs with HRE. Therefore, we propose that the HRE in C9ORF72 induces ALS pathogenesis via a combination of gain- and loss-of-function mechanisms.
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Affiliation(s)
- Masin Abo-Rady
- Technische Universität Dresden, Center for Regenerative Therapies TU Dresden (CRTD), 01307 Dresden, Germany
| | - Norman Kalmbach
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany
| | - Arun Pal
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany
| | - Carina Schludi
- German Center for Neurodegenerative Diseases (DZNE) and Munich Cluster for System Neurology (SyNergy), 81377 Munich, Germany
| | - Antje Janosch
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
| | - Tanja Richter
- Institute of Human Genetics, University of Ulm, 89081 Ulm, Germany
| | - Petra Freitag
- Institut für Klinische Genetik, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Marc Bickle
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
| | - Anne-Karin Kahlert
- Institut für Klinische Genetik, Medizinische Fakultät Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Susanne Petri
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany
| | - Stefan Stefanov
- Technische Universität Dresden, Center for Regenerative Therapies TU Dresden (CRTD), 01307 Dresden, Germany
| | - Hannes Glass
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany; Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology and Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany
| | - Selma Staege
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany
| | - Walter Just
- Institute of Human Genetics, University of Ulm, 89081 Ulm, Germany
| | | | - Dieter Edbauer
- German Center for Neurodegenerative Diseases (DZNE) and Munich Cluster for System Neurology (SyNergy), 81377 Munich, Germany
| | - Andreas Hermann
- Technische Universität Dresden, Center for Regenerative Therapies TU Dresden (CRTD), 01307 Dresden, Germany; Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany; Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology and Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany; German Center for Neurodegenerative Diseases (DZNE) Rostock/Greifswald, 18147 Rostock, Germany
| | - Florian Wegner
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany.
| | - Jared L Sterneckert
- Technische Universität Dresden, Center for Regenerative Therapies TU Dresden (CRTD), 01307 Dresden, Germany.
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4
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Bellmann J, Monette A, Tripathy V, Sójka A, Abo-Rady M, Janosh A, Bhatnagar R, Bickle M, Mouland AJ, Sterneckert J. Viral Infections Exacerbate FUS-ALS Phenotypes in iPSC-Derived Spinal Neurons in a Virus Species-Specific Manner. Front Cell Neurosci 2019; 13:480. [PMID: 31695598 PMCID: PMC6817715 DOI: 10.3389/fncel.2019.00480] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 10/10/2019] [Indexed: 12/11/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) arises from an interplay of genetic mutations and environmental factors. ssRNA viruses are possible ALS risk factors, but testing their interaction with mutations such as in FUS, which encodes an RNA-binding protein, has been difficult due to the lack of a human disease model. Here, we use isogenic induced pluripotent stem cell (iPSC)-derived spinal neurons (SNs) to investigate the interaction between ssRNA viruses and mutant FUS. We find that rabies virus (RABV) spreads ALS phenotypes, including the formation of stress granules (SGs) with aberrant composition due to increased levels of FUS protein, as well as neurodegeneration and reduced restriction activity by FUS mutations. Consistent with this, iPSC-derived SNs harboring mutant FUS are more sensitive to human immunodeficiency virus (HIV-1) and Zika viruses (ZIKV). We demonstrate that RABV and HIV-1 exacerbate cytoplasmic mislocalization of FUS. Our results demonstrate that viral infections worsen ALS pathology in SNs with genetic risk factors, suggesting a novel role for viruses in modulating patient phenotypes.
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Affiliation(s)
- Jessica Bellmann
- Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Anne Monette
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC, Canada.,Department of Medicine, McGill University, Montreal, QC, Canada
| | - Vadreenath Tripathy
- Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Anna Sójka
- Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Masin Abo-Rady
- Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Antje Janosh
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | | | - Marc Bickle
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Andrew J Mouland
- Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC, Canada.,Department of Medicine, McGill University, Montreal, QC, Canada
| | - Jared Sterneckert
- Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
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5
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Marrone L, Drexler HCA, Wang J, Tripathi P, Distler T, Heisterkamp P, Anderson EN, Kour S, Moraiti A, Maharana S, Bhatnagar R, Belgard TG, Tripathy V, Kalmbach N, Hosseinzadeh Z, Crippa V, Abo-Rady M, Wegner F, Poletti A, Troost D, Aronica E, Busskamp V, Weis J, Pandey UB, Hyman AA, Alberti S, Goswami A, Sterneckert J. FUS pathology in ALS is linked to alterations in multiple ALS-associated proteins and rescued by drugs stimulating autophagy. Acta Neuropathol 2019; 138:67-84. [PMID: 30937520 PMCID: PMC6570784 DOI: 10.1007/s00401-019-01998-x] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/26/2019] [Accepted: 03/26/2019] [Indexed: 12/13/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is a lethal disease characterized by motor neuron degeneration and associated with aggregation of nuclear RNA-binding proteins (RBPs), including FUS. How FUS aggregation and neurodegeneration are prevented in healthy motor neurons remain critically unanswered questions. Here, we use a combination of ALS patient autopsy tissue and induced pluripotent stem cell-derived neurons to study the effects of FUS mutations on RBP homeostasis. We show that FUS’ tendency to aggregate is normally buffered by interacting RBPs, but this buffering is lost when FUS mislocalizes to the cytoplasm due to ALS mutations. The presence of aggregation-prone FUS in the cytoplasm causes imbalances in RBP homeostasis that exacerbate neurodegeneration. However, enhancing autophagy using small molecules reduces cytoplasmic FUS, restores RBP homeostasis and rescues motor function in vivo. We conclude that disruption of RBP homeostasis plays a critical role in FUS-ALS and can be treated by stimulating autophagy.
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6
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Reinhardt L, Kordes S, Reinhardt P, Glatza M, Baumann M, Drexler HCA, Menninger S, Zischinsky G, Eickhoff J, Fröb C, Bhattarai P, Arulmozhivarman G, Marrone L, Janosch A, Adachi K, Stehling M, Anderson EN, Abo-Rady M, Bickle M, Pandey UB, Reimer MM, Kizil C, Schöler HR, Nussbaumer P, Klebl B, Sterneckert JL. Dual Inhibition of GSK3β and CDK5 Protects the Cytoskeleton of Neurons from Neuroinflammatory-Mediated Degeneration In Vitro and In Vivo. Stem Cell Reports 2019; 12:502-517. [PMID: 30773488 PMCID: PMC6409486 DOI: 10.1016/j.stemcr.2019.01.015] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 01/16/2019] [Accepted: 01/17/2019] [Indexed: 12/13/2022] Open
Abstract
Neuroinflammation is a hallmark of neurological disorders and is accompanied by the production of neurotoxic agents such as nitric oxide. We used stem cell-based phenotypic screening and identified small molecules that directly protected neurons from neuroinflammation-induced degeneration. We demonstrate that inhibition of CDK5 is involved in, but not sufficient for, neuroprotection. Instead, additional inhibition of GSK3β is required to enhance the neuroprotective effects of CDK5 inhibition, which was confirmed using short hairpin RNA-mediated knockdown of CDK5 and GSK3β. Quantitative phosphoproteomics and high-content imaging demonstrate that neurite degeneration is mediated by aberrant phosphorylation of multiple microtubule-associated proteins. Finally, we show that our hit compound protects neurons in vivo in zebrafish models of motor neuron degeneration and Alzheimer's disease. Thus, we demonstrate an overlap of CDK5 and GSK3β in mediating the regulation of the neuronal cytoskeleton and that our hit compound LDC8 represents a promising starting point for neuroprotective drugs. Phenotypic screening identifies CDK inhibitors protecting neurons from inflammation Inhibition of CDK5 is involved in neuroprotection but is not sufficient Dual inhibition of CDK5 and GSK3β is neuroprotective in vitro and in vivo Quantitative phosphoproteomics links neuroprotection to microtubule dynamics
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Affiliation(s)
- Lydia Reinhardt
- Technische Universität Dresden, DFG-Research Center for Regenerative Therapies Dresden (CRTD), Fetscherstrasse 105, 01307 Dresden, Germany; Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, 48149 Münster, Germany
| | - Susanne Kordes
- Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, 48149 Münster, Germany; Lead Discovery Center GmbH, Otto-Hahn-Strasse 15, 44227 Dortmund, Germany
| | - Peter Reinhardt
- Technische Universität Dresden, DFG-Research Center for Regenerative Therapies Dresden (CRTD), Fetscherstrasse 105, 01307 Dresden, Germany; Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, 48149 Münster, Germany
| | - Michael Glatza
- Technische Universität Dresden, DFG-Research Center for Regenerative Therapies Dresden (CRTD), Fetscherstrasse 105, 01307 Dresden, Germany; Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, 48149 Münster, Germany
| | - Matthias Baumann
- Lead Discovery Center GmbH, Otto-Hahn-Strasse 15, 44227 Dortmund, Germany
| | - Hannes C A Drexler
- Bioanalytical Mass Spectrometry, Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, 48149 Münster, Germany
| | - Sascha Menninger
- Lead Discovery Center GmbH, Otto-Hahn-Strasse 15, 44227 Dortmund, Germany
| | - Gunther Zischinsky
- Lead Discovery Center GmbH, Otto-Hahn-Strasse 15, 44227 Dortmund, Germany
| | - Jan Eickhoff
- Lead Discovery Center GmbH, Otto-Hahn-Strasse 15, 44227 Dortmund, Germany
| | - Claudia Fröb
- Technische Universität Dresden, DFG-Research Center for Regenerative Therapies Dresden (CRTD), Fetscherstrasse 105, 01307 Dresden, Germany
| | - Prabesh Bhattarai
- Technische Universität Dresden, DFG-Research Center for Regenerative Therapies Dresden (CRTD), Fetscherstrasse 105, 01307 Dresden, Germany; German Center for Neurodegenerative Diseases (DZNE) within the Helmholtz Association, Tatzberg 41, 01307 Dresden, Germany
| | - Guruchandar Arulmozhivarman
- Technische Universität Dresden, DFG-Research Center for Regenerative Therapies Dresden (CRTD), Fetscherstrasse 105, 01307 Dresden, Germany
| | - Lara Marrone
- Technische Universität Dresden, DFG-Research Center for Regenerative Therapies Dresden (CRTD), Fetscherstrasse 105, 01307 Dresden, Germany
| | - Antje Janosch
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
| | - Kenjiro Adachi
- Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, 48149 Münster, Germany
| | - Martin Stehling
- Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, 48149 Münster, Germany
| | - Eric N Anderson
- Department of Pediatrics, Division of Child Neurology, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15224, USA; Department of Human Genetics, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA 15261, USA
| | - Masin Abo-Rady
- Technische Universität Dresden, DFG-Research Center for Regenerative Therapies Dresden (CRTD), Fetscherstrasse 105, 01307 Dresden, Germany
| | - Marc Bickle
- Max Planck Institute of Molecular Cell Biology and Genetics, 01307 Dresden, Germany
| | - Udai Bhan Pandey
- Department of Pediatrics, Division of Child Neurology, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15224, USA; Department of Human Genetics, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA 15261, USA; Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Michell M Reimer
- Technische Universität Dresden, DFG-Research Center for Regenerative Therapies Dresden (CRTD), Fetscherstrasse 105, 01307 Dresden, Germany
| | - Caghan Kizil
- Technische Universität Dresden, DFG-Research Center for Regenerative Therapies Dresden (CRTD), Fetscherstrasse 105, 01307 Dresden, Germany; German Center for Neurodegenerative Diseases (DZNE) within the Helmholtz Association, Tatzberg 41, 01307 Dresden, Germany
| | - Hans R Schöler
- Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, 48149 Münster, Germany; University of Münster, Medical Faculty, Domagkstrasse 3, 48149 Münster, Germany
| | - Peter Nussbaumer
- Lead Discovery Center GmbH, Otto-Hahn-Strasse 15, 44227 Dortmund, Germany
| | - Bert Klebl
- Lead Discovery Center GmbH, Otto-Hahn-Strasse 15, 44227 Dortmund, Germany
| | - Jared L Sterneckert
- Technische Universität Dresden, DFG-Research Center for Regenerative Therapies Dresden (CRTD), Fetscherstrasse 105, 01307 Dresden, Germany; Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstrasse 20, 48149 Münster, Germany.
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7
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Abo-Rady M, Bellmann J, Glatza M, Marrone L, Reinhardt L, Tena S, Sterneckert J. Phenotypic Screening Using Mouse and Human Stem Cell-Based Models of Neuroinflammation and Gene Expression Analysis to Study Drug Responses. Methods Mol Biol 2019; 1888:21-43. [PMID: 30519939 DOI: 10.1007/978-1-4939-8891-4_2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
High-throughput phenotypic screening enables the identification of new therapeutic targets even when the molecular mechanism underlying the disease is unknown. In the case of neurodegenerative disease, there is a dire need to identify new targets that can ameliorate, halt, or reverse degeneration. Stem cell-based disease models are particularly powerful tools for phenotypic screening because they use the same cell type affected in patients. Here, we describe the expansion of mouse stem cells and human induced pluripotent stem cells as well as the differentiation of these cells into neural lineages that, when exposed to neuroinflammatory stress, can be used for compound screening followed by hit identification, validation, and target deconvolution.
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Affiliation(s)
- Masin Abo-Rady
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Jessica Bellmann
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Michael Glatza
- Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Lara Marrone
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Lydia Reinhardt
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany.,Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Santiago Tena
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
| | - Jared Sterneckert
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany.
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Camacho M, Basu J, Trimbuch T, Chang S, Pulido-Lozano C, Chang SS, Duluvova I, Abo-Rady M, Rizo J, Rosenmund C. Heterodimerization of Munc13 C 2A domain with RIM regulates synaptic vesicle docking and priming. Nat Commun 2017; 8:15293. [PMID: 28489077 PMCID: PMC5436228 DOI: 10.1038/ncomms15293] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 03/13/2017] [Indexed: 11/28/2022] Open
Abstract
The presynaptic active zone protein Munc13 is essential for neurotransmitter release, playing key roles in vesicle docking and priming. Mechanistically, it is thought that the C2A domain of Munc13 inhibits the priming function by homodimerization, and that RIM disrupts the autoinhibitory homodimerization forming monomeric priming-competent Munc13. However, it is unclear whether the C2A domain mediates other Munc13 functions in addition to this inactivation–activation switch. Here, we utilize mutations that modulate the homodimerization and heterodimerization states to define additional roles of the Munc13 C2A domain. Using electron microscopy and electrophysiology in hippocampal cultures, we show that the C2A domain is critical for additional steps of vesicular release, including vesicle docking. Optimal vesicle docking and priming is only possible when Munc13 heterodimerizes with RIM via its C2A domain. Beyond being a switching module, our data suggest that the Munc13-RIM heterodimer is an active component of the vesicle docking, priming and release complex. The interaction between RIM and the C2A domain of Munc13 is known to be required for synaptic vesicle priming. Here the authors show new implications of the C2A domain of Munc13, through its dynamic interaction with RIM, in orchestrating a wide range of modulatory operations that shape vesicle docking, priming and neurotransmitter release.
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Affiliation(s)
- Marcial Camacho
- Institute of Neurophysiology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.,NeuroCure Cluster of Excellence, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.,Department of Neuroscience, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Jayeeta Basu
- Department of Neuroscience, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Thorsten Trimbuch
- Institute of Neurophysiology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.,NeuroCure Cluster of Excellence, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Shuwen Chang
- Institute of Neurophysiology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.,NeuroCure Cluster of Excellence, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Cristina Pulido-Lozano
- Institute of Neurophysiology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.,NeuroCure Cluster of Excellence, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Shwu-Shin Chang
- Departments of Biophysics, Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Irina Duluvova
- Departments of Biophysics, Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Masin Abo-Rady
- Institute of Neurophysiology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.,NeuroCure Cluster of Excellence, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Josep Rizo
- Departments of Biophysics, Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Christian Rosenmund
- Institute of Neurophysiology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.,NeuroCure Cluster of Excellence, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.,Department of Neuroscience, Baylor College of Medicine, Houston, Texas 77030, USA
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