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Grossmann D, Malburg N, Glaß H, Weeren V, Sondermann V, Pfeiffer JF, Petters J, Lukas J, Seibler P, Klein C, Grünewald A, Hermann A. Mitochondria-Endoplasmic Reticulum Contact Sites Dynamics and Calcium Homeostasis Are Differentially Disrupted in PINK1-PD or PRKN-PD Neurons. Mov Disord 2023; 38:1822-1836. [PMID: 37449534 DOI: 10.1002/mds.29525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 06/16/2023] [Indexed: 07/18/2023] Open
Abstract
BACKGROUND It is generally believed that the pathogenesis of PINK1/parkin-related Parkinson's disease (PD) is due to a disturbance in mitochondrial quality control. However, recent studies have found that PINK1 and Parkin play a significant role in mitochondrial calcium homeostasis and are involved in the regulation of mitochondria-endoplasmic reticulum contact sites (MERCSs). OBJECTIVE The aim of our study was to perform an in-depth analysis of the role of MERCSs and impaired calcium homeostasis in PINK1/Parkin-linked PD. METHODS In our study, we used induced pluripotent stem cell-derived dopaminergic neurons from patients with PD with loss-of-function mutations in PINK1 or PRKN. We employed a split-GFP-based contact site sensor in combination with the calcium-sensitive dye Rhod-2 AM and applied Airyscan live-cell super-resolution microscopy to determine how MERCSs are involved in the regulation of mitochondrial calcium homeostasis. RESULTS Our results showed that thapsigargin-induced calcium stress leads to an increase of the abundance of narrow MERCSs in wild-type neurons. Intriguingly, calcium levels at the MERCSs remained stable, whereas the increased net calcium influx resulted in elevated mitochondrial calcium levels. However, PINK1-PD or PRKN-PD neurons showed an increased abundance of MERCSs at baseline, accompanied by an inability to further increase MERCSs upon thapsigargin-induced calcium stress. Consequently, calcium distribution at MERCSs and within mitochondria was disrupted. CONCLUSIONS Our results demonstrated how the endoplasmic reticulum and mitochondria work together to cope with calcium stress in wild-type neurons. In addition, our results suggests that PRKN deficiency affects the dynamics and composition of MERCSs differently from PINK1 deficiency, resulting in differentially affected calcium homeostasis. © 2023 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Dajana Grossmann
- Translational Neurodegeneration Section "Albrecht Kossel," Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Nina Malburg
- Translational Neurodegeneration Section "Albrecht Kossel," Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Hannes Glaß
- Translational Neurodegeneration Section "Albrecht Kossel," Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Veronika Weeren
- Translational Neurodegeneration Section "Albrecht Kossel," Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Verena Sondermann
- Translational Neurodegeneration Section "Albrecht Kossel," Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Julia F Pfeiffer
- Translational Neurodegeneration Section "Albrecht Kossel," Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Janine Petters
- Translational Neurodegeneration Section "Albrecht Kossel," Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Jan Lukas
- Translational Neurodegeneration Section "Albrecht Kossel," Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Philip Seibler
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Christine Klein
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Anne Grünewald
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Belvaux, Luxembourg
| | - Andreas Hermann
- Translational Neurodegeneration Section "Albrecht Kossel," Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen Rostock/Greifswald, Rostock, Germany
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Glaß H, Jonitz-Heincke A, Petters J, Lukas J, Bader R, Hermann A. Corrosion Products from Metallic Implants Induce ROS and Cell Death in Human Motoneurons In Vitro. J Funct Biomater 2023; 14:392. [PMID: 37623637 PMCID: PMC10455184 DOI: 10.3390/jfb14080392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/17/2023] [Accepted: 07/22/2023] [Indexed: 08/26/2023] Open
Abstract
Due to advances in surgical procedures and the biocompatibility of materials used in total joint replacement, more and younger patients are undergoing these procedures. Although state-of-the-art joint replacements can last 20 years or longer, wear and corrosion is still a major risk for implant failure, and patients with these implants are exposed for longer to these corrosive products. It is therefore important to investigate the potential effects on the whole organism. Released nanoparticles and ions derived from commonly used metal implants consist, among others, of cobalt, nickel, and chromium. The effect of these metallic products in the process of osteolysis and aseptic implant loosening has already been studied; however, the systemic effect on other cell types, including neurons, remains elusive. To this end, we used human iPSC-derived motoneurons to investigate the effects of metal ions on human neurons. We treated human motoneurons with ion concentrations regularly found in patients, stained them with MitoSOX and propidium iodide, and analyzed them with fluorescence-assisted cell sorting (FACS). We found that upon treatment human motoneurons suffered from the formation of ROS and subsequently died. These effects were most prominent in motoneurons treated with 500 μM of cobalt or nickel, in which we observed significant cell death, whereas chromium showed fewer ROS and no apparent impairment of motoneurons. Our results show that the wear and corrosive products of metal implants at concentrations readily available in peri-implant tissues induced ROS and subsequently cell death in an iPSC-derived motoneuron cell model. We therefore conclude that monitoring of neuronal impairment is important in patients undergoing total joint replacement.
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Affiliation(s)
- Hannes Glaß
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany; (H.G.)
| | - Anika Jonitz-Heincke
- Biomechanics and Implant Technology Research Laboratory, Department of Orthopedics, University Medical Center Rostock, University of Rostock, 18057 Rostock, Germany
| | - Janine Petters
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany; (H.G.)
| | - Jan Lukas
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany; (H.G.)
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany
| | - Rainer Bader
- Biomechanics and Implant Technology Research Laboratory, Department of Orthopedics, University Medical Center Rostock, University of Rostock, 18057 Rostock, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany; (H.G.)
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Rostock/Greifswald, 18147 Rostock, Germany
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3
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Kandhavivorn W, Glaß H, Herrmannsdörfer T, Böckers TM, Uhlarz M, Gronemann J, Funk RHW, Pietzsch J, Pal A, Hermann A. Restoring Axonal Organelle Motility and Regeneration in Cultured FUS-ALS Motoneurons through Magnetic Field Stimulation Suggests an Alternative Therapeutic Approach. Cells 2023; 12:1502. [PMID: 37296623 PMCID: PMC10252208 DOI: 10.3390/cells12111502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/17/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a devastating motoneuron disease characterized by sustained loss of neuromuscular junctions, degenerating corticospinal motoneurons and rapidly progressing muscle paralysis. Motoneurons have unique features, essentially a highly polarized, lengthy architecture of axons, posing a considerable challenge for maintaining long-range trafficking routes for organelles, cargo, mRNA and secretion with a high energy effort to serve crucial neuronal functions. Impaired intracellular pathways implicated in ALS pathology comprise RNA metabolism, cytoplasmic protein aggregation, cytoskeletal integrity for organelle trafficking and maintenance of mitochondrial morphology and function, cumulatively leading to neurodegeneration. Current drug treatments only have marginal effects on survival, thereby calling for alternative ALS therapies. Exposure to magnetic fields, e.g., transcranial magnetic stimulations (TMS) on the central nervous system (CNS), has been broadly explored over the past 20 years to investigate and improve physical and mental activities through stimulated excitability as well as neuronal plasticity. However, studies of magnetic treatments on the peripheral nervous system are still scarce. Thus, we investigated the therapeutic potential of low frequency alternating current magnetic fields on cultured spinal motoneurons derived from induced pluripotent stem cells of FUS-ALS patients and healthy persons. We report a remarkable restoration induced by magnetic stimulation on axonal trafficking of mitochondria and lysosomes and axonal regenerative sprouting after axotomy in FUS-ALS in vitro without obvious harmful effects on diseased and healthy neurons. These beneficial effects seem to derive from improved microtubule integrity. Thus, our study suggests the therapeutic potential of magnetic stimulations in ALS, which awaits further exploration and validation in future long-term in vivo studies.
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Affiliation(s)
- Wonphorn Kandhavivorn
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany; (W.K.); (T.H.); (M.U.); (J.G.)
- Institute of Anatomy, Technische Universität Dresden, D-01307 Dresden, Germany
| | - Hannes Glaß
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, D-01307 Dresden, Germany;
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, D-18147 Rostock, Germany
| | - Thomas Herrmannsdörfer
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany; (W.K.); (T.H.); (M.U.); (J.G.)
| | - Tobias M. Böckers
- Institute of Anatomy and Cell Biology, University of Ulm, D-89081 Ulm, Germany;
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Ulm, D-89081 Ulm, Germany
| | - Marc Uhlarz
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany; (W.K.); (T.H.); (M.U.); (J.G.)
| | - Jonas Gronemann
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany; (W.K.); (T.H.); (M.U.); (J.G.)
| | - Richard H. W. Funk
- Institute of Anatomy, Technische Universität Dresden, D-01307 Dresden, Germany
- Dresden International University, D-01067 Dresden, Germany
| | - Jens Pietzsch
- Department of Radiopharmaceutical and Chemical Biology, Institute of Radiopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
- Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, D-01069 Dresden, Germany
| | - Arun Pal
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany; (W.K.); (T.H.); (M.U.); (J.G.)
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, D-01307 Dresden, Germany;
| | - Andreas Hermann
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, D-01307 Dresden, Germany;
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, D-18147 Rostock, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Rostock/Greifswald, D-18147 Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, D-18147 Rostock, Germany
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Zimyanin VL, Pielka AM, Glaß H, Japtok J, Großmann D, Martin M, Deussen A, Szewczyk B, Deppmann C, Zunder E, Andersen PM, Boeckers TM, Sterneckert J, Redemann S, Storch A, Hermann A. Live Cell Imaging of ATP Levels Reveals Metabolic Compartmentalization within Motoneurons and Early Metabolic Changes in FUS ALS Motoneurons. Cells 2023; 12:1352. [PMID: 37408187 PMCID: PMC10216752 DOI: 10.3390/cells12101352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/24/2023] [Accepted: 04/30/2023] [Indexed: 07/07/2023] Open
Abstract
Motoneurons are one of the most energy-demanding cell types and a primary target in Amyotrophic lateral sclerosis (ALS), a debilitating and lethal neurodegenerative disorder without currently available effective treatments. Disruption of mitochondrial ultrastructure, transport, and metabolism is a commonly reported phenotype in ALS models and can critically affect survival and the proper function of motor neurons. However, how changes in metabolic rates contribute to ALS progression is not fully understood yet. Here, we utilize hiPCS-derived motoneuron cultures and live imaging quantitative techniques to evaluate metabolic rates in fused in sarcoma (FUS)-ALS model cells. We show that differentiation and maturation of motoneurons are accompanied by an overall upregulation of mitochondrial components and a significant increase in metabolic rates that correspond to their high energy-demanding state. Detailed compartment-specific live measurements using a fluorescent ATP sensor and FLIM imaging show significantly lower levels of ATP in the somas of cells carrying FUS-ALS mutations. These changes lead to the increased vulnerability of diseased motoneurons to further metabolic challenges with mitochondrial inhibitors and could be due to the disruption of mitochondrial inner membrane integrity and an increase in its proton leakage. Furthermore, our measurements demonstrate heterogeneity between axonal and somatic compartments, with lower relative levels of ATP in axons. Our observations strongly support the hypothesis that mutated FUS impacts the metabolic states of motoneurons and makes them more susceptible to further neurodegenerative mechanisms.
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Affiliation(s)
- Vitaly L Zimyanin
- Department of Molecular Physiology and Biological Physics, School of Medicine, University of Virginia, Charlottesville, VA 22903, USA
- Center for Membrane and Cell Physiology, School of Medicine, University of Virginia, Charlottesville, VA 22903, USA
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany
| | - Anna-Maria Pielka
- Translational Neurodegeneration Section, "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany
| | - Hannes Glaß
- Translational Neurodegeneration Section, "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany
| | - Julia Japtok
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany
| | - Dajana Großmann
- Translational Neurodegeneration Section, "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany
| | - Melanie Martin
- Institute of Physiology, Technische Universität Dresden, 01307 Dresden, Germany
| | - Andreas Deussen
- Institute of Physiology, Technische Universität Dresden, 01307 Dresden, Germany
| | - Barbara Szewczyk
- Translational Neurodegeneration Section, "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany
| | - Chris Deppmann
- Department of Biology, Graduate School of Arts and Sciences, University of Virginia, Charlottesville, VA 22902, USA
| | - Eli Zunder
- Department of Biomedical Engineering, School of Medicine, University of Virginia, Charlottesville, VA 22902, USA
| | - Peter M Andersen
- Department of Clinical Sciences, Neurosciences, Umeå University, SE-901 85 Umeå, Sweden
| | - Tobias M Boeckers
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Ulm Site, 89081 Ulm, Germany
- Institute for Anatomy and Cell Biology, Ulm University, 89081 Ulm, Germany
| | - Jared Sterneckert
- Centre for Regenerative Therapie, Technische Universität Dresden, 01307 Dresden, Germany
- Medical Faculty Carl Gustav Carus, Technische Universität Dresden, 01307 Dresden, Germany
| | - Stefanie Redemann
- Department of Molecular Physiology and Biological Physics, School of Medicine, University of Virginia, Charlottesville, VA 22903, USA
- Center for Membrane and Cell Physiology, School of Medicine, University of Virginia, Charlottesville, VA 22903, USA
- Department of Cell Biology, School of Medicine, University of Virginia, Charlottesville, VA 22902, USA
| | - Alexander Storch
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Rostock/Greifswald, 18147 Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Centre, University of Rostock, 18147 Rostock, Germany
- Department of Neurology, University of Rostock, 18147 Rostock, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section, "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Rostock/Greifswald, 18147 Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Centre, University of Rostock, 18147 Rostock, Germany
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Reichel F, Kräter M, Peikert K, Glaß H, Rosendahl P, Herbig M, Rivera Prieto A, Kihm A, Bosman G, Kaestner L, Hermann A, Guck J. Changes in Blood Cell Deformability in Chorea-Acanthocytosis and Effects of Treatment With Dasatinib or Lithium. Front Physiol 2022; 13:852946. [PMID: 35444561 PMCID: PMC9013823 DOI: 10.3389/fphys.2022.852946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 01/11/2022] [Accepted: 03/08/2022] [Indexed: 12/29/2022] Open
Abstract
Misshaped red blood cells (RBCs), characterized by thorn-like protrusions known as acanthocytes, are a key diagnostic feature in Chorea-Acanthocytosis (ChAc), a rare neurodegenerative disorder. The altered RBC morphology likely influences their biomechanical properties which are crucial for the cells to pass the microvasculature. Here, we investigated blood cell deformability of five ChAc patients compared to healthy controls during up to 1-year individual off-label treatment with the tyrosine kinase inhibitor dasatinib or several weeks with lithium. Measurements with two microfluidic techniques allowed us to assess RBC deformability under different shear stresses. Furthermore, we characterized leukocyte stiffness at high shear stresses. The results showed that blood cell deformability–including both RBCs and leukocytes - in general was altered in ChAc patients compared to healthy donors. Therefore, this study shows for the first time an impairment of leukocyte properties in ChAc. During treatment with dasatinib or lithium, we observed alterations in RBC deformability and a stiffness increase for leukocytes. The hematological phenotype of ChAc patients hinted at a reorganization of the cytoskeleton in blood cells which partly explains the altered mechanical properties observed here. These findings highlight the need for a systematic assessment of the contribution of impaired blood cell mechanics to the clinical manifestation of ChAc.
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Affiliation(s)
- Felix Reichel
- Max-Planck-Institut für die Physik des Lichts and Max-Planck-Zentrum für Physik und Medizin, Erlangen, Germany
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Martin Kräter
- Max-Planck-Institut für die Physik des Lichts and Max-Planck-Zentrum für Physik und Medizin, Erlangen, Germany
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Kevin Peikert
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Hannes Glaß
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | - Philipp Rosendahl
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Maik Herbig
- Max-Planck-Institut für die Physik des Lichts and Max-Planck-Zentrum für Physik und Medizin, Erlangen, Germany
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Alejandro Rivera Prieto
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Alexander Kihm
- Department of Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Giel Bosman
- Department of Biochemistry, Radboud UMC, Nijmegen, Netherlands
| | - Lars Kaestner
- Department of Experimental Physics, Saarland University, Saarbrücken, Germany
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section “Albrecht Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
- Division for Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Rostock/Greifswald, Rostock, Germany
- Center for Regenerative Therapies Dresden, Technische Universität Dresden, Dresden, Germany
| | - Jochen Guck
- Max-Planck-Institut für die Physik des Lichts and Max-Planck-Zentrum für Physik und Medizin, Erlangen, Germany
- Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
- *Correspondence: Jochen Guck,
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Temp AGM, Naumann M, Hermann A, Glaß H. Applied Bayesian Approaches for Research in Motor Neuron Disease. Front Neurol 2022; 13:796777. [PMID: 35401404 PMCID: PMC8987707 DOI: 10.3389/fneur.2022.796777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 10/17/2021] [Accepted: 02/23/2022] [Indexed: 11/13/2022] Open
Abstract
Statistical evaluation of empirical data is the basis of the modern scientific method. Available tools include various hypothesis tests for specific data structures, as well as methods that are used to quantify the uncertainty of an obtained result. Statistics are pivotal, but many misconceptions arise due to their complexity and difficult-to-acquire mathematical background. Even though most studies rely on a frequentist interpretation of statistical readouts, the application of Bayesian statistics has increased due to the availability of easy-to-use software suites and an increased outreach favouring this topic in the scientific community. Bayesian statistics take our prior knowledge together with the obtained data to express a degree of belief how likely a certain event is. Bayes factor hypothesis testing (BFHT) provides a straightforward method to evaluate multiple hypotheses at the same time and provides evidence that favors the null hypothesis or alternative hypothesis. In the present perspective, we show the merits of BFHT for three different use cases, including a clinical trial, basic research as well as a single case study. Here we show that Bayesian statistics is a viable addition of a scientist's statistical toolset, which can help to interpret data.
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Affiliation(s)
- Anna G. M. Temp
- Translational Neurodegeneration Section “Albrecht Kossel,” Department of Neurology, University Medical Centre, Rostock, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Rostock, Germany
- Neurozentrum, Berufsgenossenschaftliches Klinikum Hamburg, Hamburg, Germany
- *Correspondence: Anna G. M. Temp ; orcid.org/0000-0003-0671-121X
| | - Marcel Naumann
- Translational Neurodegeneration Section “Albrecht Kossel,” Department of Neurology, University Medical Centre, Rostock, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section “Albrecht Kossel,” Department of Neurology, University Medical Centre, Rostock, Germany
- Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE), Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock, University Medical Centre, Rostock, Germany
| | - Hannes Glaß
- Translational Neurodegeneration Section “Albrecht Kossel,” Department of Neurology, University Medical Centre, Rostock, Germany
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Staege S, Kutschenko A, Baumann H, Glaß H, Henkel L, Gschwendtberger T, Kalmbach N, Klietz M, Hermann A, Lohmann K, Seibler P, Wegner F. Reduced Expression of GABA A Receptor Alpha2 Subunit Is Associated With Disinhibition of DYT-THAP1 Dystonia Patient-Derived Striatal Medium Spiny Neurons. Front Cell Dev Biol 2021; 9:650586. [PMID: 34095114 PMCID: PMC8176025 DOI: 10.3389/fcell.2021.650586] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 01/07/2021] [Accepted: 04/08/2021] [Indexed: 12/18/2022] Open
Abstract
DYT-THAP1 dystonia (formerly DYT6) is an adolescent-onset dystonia characterized by involuntary muscle contractions usually involving the upper body. It is caused by mutations in the gene THAP1 encoding for the transcription factor Thanatos-associated protein (THAP) domain containing apoptosis-associated protein 1 and inherited in an autosomal-dominant manner with reduced penetrance. Alterations in the development of striatal neuronal projections and synaptic function are known from transgenic mice models. To investigate pathogenetic mechanisms, human induced pluripotent stem cell (iPSC)-derived medium spiny neurons (MSNs) from two patients and one family member with reduced penetrance carrying a mutation in the gene THAP1 (c.474delA and c.38G > A) were functionally characterized in comparison to healthy controls. Calcium imaging and quantitative PCR analysis revealed significantly lower Ca2+ amplitudes upon GABA applications and a marked downregulation of the gene encoding the GABAA receptor alpha2 subunit in THAP1 MSNs indicating a decreased GABAergic transmission. Whole-cell patch-clamp recordings showed a significantly lower frequency of miniature postsynaptic currents (mPSCs), whereas the frequency of spontaneous action potentials (APs) was elevated in THAP1 MSNs suggesting that decreased synaptic activity might have resulted in enhanced generation of APs. Our molecular and functional data indicate that a reduced expression of GABAA receptor alpha2 subunit could eventually lead to limited GABAergic synaptic transmission, neuronal disinhibition, and hyperexcitability of THAP1 MSNs. These data give pathophysiological insight and may contribute to the development of novel treatment strategies for DYT-THAP1 dystonia.
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Affiliation(s)
- Selma Staege
- Department of Neurology, Hannover Medical School, Hanover, Germany.,Center for Systems Neuroscience, Hanover, Germany
| | - Anna Kutschenko
- Department of Neurology, Hannover Medical School, Hanover, Germany
| | - Hauke Baumann
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Hannes Glaß
- Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology, University of Rostock, Rostock, Germany
| | - Lisa Henkel
- Department of Neurology, Hannover Medical School, Hanover, Germany.,Center for Systems Neuroscience, Hanover, Germany
| | - Thomas Gschwendtberger
- Department of Neurology, Hannover Medical School, Hanover, Germany.,Center for Systems Neuroscience, Hanover, Germany
| | - Norman Kalmbach
- Department of Neurology, Hannover Medical School, Hanover, Germany
| | - Martin Klietz
- Department of Neurology, Hannover Medical School, Hanover, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology, University of Rostock, Rostock, Germany.,German Center for Neurodegenerative Diseases Rostock/Greifswald, Rostock, Germany
| | - Katja Lohmann
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Philip Seibler
- Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Florian Wegner
- Department of Neurology, Hannover Medical School, Hanover, Germany.,Center for Systems Neuroscience, Hanover, Germany
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8
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Rabe A, Kihm A, Darras A, Peikert K, Simionato G, Dasanna AK, Glaß H, Geisel J, Quint S, Danek A, Wagner C, Fedosov DA, Hermann A, Kaestner L. The Erythrocyte Sedimentation Rate and Its Relation to Cell Shape and Rigidity of Red Blood Cells from Chorea-Acanthocytosis Patients in an Off-Label Treatment with Dasatinib. Biomolecules 2021; 11:biom11050727. [PMID: 34066168 PMCID: PMC8151862 DOI: 10.3390/biom11050727] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/07/2021] [Accepted: 05/10/2021] [Indexed: 11/24/2022] Open
Abstract
Background: Chorea-acanthocytosis (ChAc) is a rare hereditary neurodegenerative disease with deformed red blood cells (RBCs), so-called acanthocytes, as a typical marker of the disease. Erythrocyte sedimentation rate (ESR) was recently proposed as a diagnostic biomarker. To date, there is no treatment option for affected patients, but promising therapy candidates, such as dasatinib, a Lyn-kinase inhibitor, have been identified. Methods: RBCs of two ChAc patients during and after dasatinib treatment were characterized by the ESR, clinical hematology parameters and the 3D shape classification in stasis based on an artificial neural network. Furthermore, mathematical modeling was performed to understand the contribution of cell morphology and cell rigidity to the ESR. Microfluidic measurements were used to compare the RBC rigidity between ChAc patients and healthy controls. Results: The mechano-morphological characterization of RBCs from two ChAc patients in an off-label treatment with dasatinib revealed differences in the ESR and the acanthocyte count during and after the treatment period, which could not directly be related to each other. Clinical hematology parameters were in the normal range. Mathematical modeling indicated that RBC rigidity is more important for delayed ESR than cell shape. Microfluidic experiments confirmed a higher rigidity in the normocytes of ChAc patients compared to healthy controls. Conclusions: The results increase our understanding of the role of acanthocytes and their associated properties in the ESR, but the data are too sparse to answer the question of whether the ESR is a suitable biomarker for treatment success, whereas a correlation between hematological and neuronal phenotype is still subject to verification.
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Affiliation(s)
- Antonia Rabe
- Theoretical Medicine and Biosciences, Saarland University, 66424 Homburg, Germany;
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
| | - Alexander Kihm
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
| | - Alexis Darras
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
| | - Kevin Peikert
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18051 Rostock, Germany; (K.P.); (H.G.); (A.H.)
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany
| | - Greta Simionato
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
- Institute for Clinical and Experimental Surgery, Saarland University, 66424 Homburg, Germany
| | - Anil Kumar Dasanna
- Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany; (A.K.D.); (D.A.F.)
| | - Hannes Glaß
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18051 Rostock, Germany; (K.P.); (H.G.); (A.H.)
| | - Jürgen Geisel
- Central Laboratory, Saarland University Medical Centre, 66424 Homburg, Germany;
| | - Stephan Quint
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
- Cysmic GmbH, 66123 Saarbrücken, Germany
| | - Adrian Danek
- Neurologische Klinik und Poliklinik, Ludwig-Maximilians-Universität, 81366 Munich, Germany;
| | - Christian Wagner
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
- Physics and Materials Science Research Unit, University of Luxembourg, 1511 Luxembourg, Luxembourg
| | - Dmitry A. Fedosov
- Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany; (A.K.D.); (D.A.F.)
| | - Andreas Hermann
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18051 Rostock, Germany; (K.P.); (H.G.); (A.H.)
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany
- DZNE, German Center for Neurodegenerative Diseases, Research Site Rostock/Greifswald, 18051 Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, 18051 Rostock, Germany
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Saarland University, 66424 Homburg, Germany;
- Experimental Physics, Saarland University, 66123 Saarbruecken, Germany; (A.K.); (A.D.); (G.S.); (S.Q.); (C.W.)
- Correspondence: ; Tel.: +49-681-302-2417
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9
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Peikert K, Federti E, Matte A, Constantin G, Pietronigro EC, Fabene PF, Defilippi P, Turco E, Del Gallo F, Pucci P, Amoresano A, Illiano A, Cozzolino F, Monti M, Garello F, Terreno E, Alper SL, Glaß H, Pelzl L, Akgün K, Ziemssen T, Ordemann R, Lang F, Brunati AM, Tibaldi E, Andolfo I, Iolascon A, Bertini G, Buffelli M, Zancanaro C, Lorenzetto E, Siciliano A, Bonifacio M, Danek A, Walker RH, Hermann A, De Franceschi L. Therapeutic targeting of Lyn kinase to treat chorea-acanthocytosis. Acta Neuropathol Commun 2021; 9:81. [PMID: 33941276 PMCID: PMC8091687 DOI: 10.1186/s40478-021-01181-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 02/14/2021] [Accepted: 04/14/2021] [Indexed: 11/18/2022] Open
Abstract
Chorea-Acanthocytosis (ChAc) is a devastating, little understood, and currently untreatable neurodegenerative disease caused by VPS13A mutations. Based on our recent demonstration that accumulation of activated Lyn tyrosine kinase is a key pathophysiological event in human ChAc cells, we took advantage of Vps13a−/− mice, which phenocopied human ChAc. Using proteomic approach, we found accumulation of active Lyn, γ-synuclein and phospho-tau proteins in Vps13a−/− basal ganglia secondary to impaired autophagy leading to neuroinflammation. Mice double knockout Vps13a−/− Lyn−/− showed normalization of red cell morphology and improvement of autophagy in basal ganglia. We then in vivo tested pharmacologic inhibitors of Lyn: dasatinib and nilotinib. Dasatinib failed to cross the mouse brain blood barrier (BBB), but the more specific Lyn kinase inhibitor nilotinib, crosses the BBB. Nilotinib ameliorates both Vps13a−/− hematological and neurological phenotypes, improving autophagy and preventing neuroinflammation. Our data support the proposal to repurpose nilotinib as new therapeutic option for ChAc patients.
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10
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Freischmidt A, Goswami A, Limm K, Zimyanin VL, Demestre M, Glaß H, Holzmann K, Helferich AM, Brockmann SJ, Tripathi P, Yamoah A, Poser I, Oefner PJ, Böckers TM, Aronica E, Ludolph AC, Andersen PM, Hermann A, Weis J, Reinders J, Danzer KM, Weishaupt JH. A serum microRNA sequence reveals fragile X protein pathology in amyotrophic lateral sclerosis. Brain 2021; 144:1214-1229. [PMID: 33871026 PMCID: PMC8105042 DOI: 10.1093/brain/awab018] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 06/24/2019] [Revised: 10/19/2020] [Accepted: 11/11/2020] [Indexed: 12/14/2022] Open
Abstract
Knowledge about converging disease mechanisms in the heterogeneous syndrome amyotrophic lateral sclerosis (ALS) is rare, but may lead to therapies effective in most ALS cases. Previously, we identified serum microRNAs downregulated in familial ALS, the majority of sporadic ALS patients, but also in presymptomatic mutation carriers. A 5-nucleotide sequence motif (GDCGG; D = G, A or U) was strongly enriched in these ALS-related microRNAs. We hypothesized that deregulation of protein(s) binding predominantly to this consensus motif was responsible for the ALS-linked microRNA fingerprint. Using microRNA pull-down assays combined with mass spectrometry followed by extensive biochemical validation, all members of the fragile X protein family, FMR1, FXR1 and FXR2, were identified to directly and predominantly interact with GDCGG microRNAs through their structurally disordered RGG/RG domains. Preferential association of this protein family with ALS-related microRNAs was confirmed by in vitro binding studies on a transcriptome-wide scale. Immunohistochemistry of lumbar spinal cord revealed aberrant expression level and aggregation of FXR1 and FXR2 in C9orf72- and FUS-linked familial ALS, but also patients with sporadic ALS. Further analysis of ALS autopsies and induced pluripotent stem cell-derived motor neurons with FUS mutations showed co-aggregation of FXR1 with FUS. Hence, our translational approach was able to take advantage of blood microRNAs to reveal CNS pathology, and suggests an involvement of the fragile X-related proteins in familial and sporadic ALS already at a presymptomatic stage. The findings may uncover disease mechanisms relevant to many patients with ALS. They furthermore underscore the systemic, extra-CNS aspect of ALS.
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Affiliation(s)
- Axel Freischmidt
- Department of Neurology, Ulm University, Ulm, Germany.,German Center For Neurodegenerative Diseases (DZNE) Ulm, Ulm, Germany
| | - Anand Goswami
- Institute of Neuropathology, RWTH Aachen University Hospital, Aachen, Germany
| | - Katharina Limm
- Institute of Functional Genomics, University of Regensburg, Regensburg, Germany
| | - Vitaly L Zimyanin
- Department of Neurology, Technical University Dresden, Dresden, Germany.,Department of Biology, University of Virginia, Charlottesville, VA, USA
| | - Maria Demestre
- Institute for Anatomy and Cell Biology, Ulm University, Ulm, Germany
| | - Hannes Glaß
- Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany
| | | | | | | | - Priyanka Tripathi
- Institute of Neuropathology, RWTH Aachen University Hospital, Aachen, Germany
| | - Alfred Yamoah
- Institute of Neuropathology, RWTH Aachen University Hospital, Aachen, Germany
| | - Ina Poser
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Peter J Oefner
- Institute of Functional Genomics, University of Regensburg, Regensburg, Germany
| | - Tobias M Böckers
- German Center For Neurodegenerative Diseases (DZNE) Ulm, Ulm, Germany.,Institute for Anatomy and Cell Biology, Ulm University, Ulm, Germany
| | - Eleonora Aronica
- Amsterdam UMC, University of Amsterdam, Department of (Neuro)Pathology, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Albert C Ludolph
- Department of Neurology, Ulm University, Ulm, Germany.,German Center For Neurodegenerative Diseases (DZNE) Ulm, Ulm, Germany
| | - Peter M Andersen
- Department of Clinical Science, Neurosciences, Umeå University, Umeå, Sweden
| | - Andreas Hermann
- Department of Neurology, Technical University Dresden, Dresden, Germany.,Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, Rostock, Germany.,Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, Rostock, Germany.,German Center for Neurodegenerative Diseases (DZNE) Rostock/Greifswald, Rostock, Germany
| | - Joachim Weis
- Institute of Neuropathology, RWTH Aachen University Hospital, Aachen, Germany
| | - Jörg Reinders
- Institute of Functional Genomics, University of Regensburg, Regensburg, Germany
| | | | - Jochen H Weishaupt
- Department of Neurology, Ulm University, Ulm, Germany.,Division for Neurodegenerative Diseases, Neurology Department, University Medicine Mannheim, Heidelberg University, Mannheim, Germany
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11
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Kutschenko A, Staege S, Grütz K, Glaß H, Kalmbach N, Gschwendtberger T, Henkel LM, Heine J, Grünewald A, Hermann A, Seibler P, Wegner F. Functional and Molecular Properties of DYT-SGCE Myoclonus-Dystonia Patient-Derived Striatal Medium Spiny Neurons. Int J Mol Sci 2021; 22:3565. [PMID: 33808167 PMCID: PMC8037318 DOI: 10.3390/ijms22073565] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/18/2021] [Accepted: 03/24/2021] [Indexed: 01/20/2023] Open
Abstract
Myoclonus-dystonia (DYT-SGCE, formerly DYT11) is characterized by alcohol-sensitive, myoclonic-like appearance of fast dystonic movements. It is caused by mutations in the SGCE gene encoding ε-sarcoglycan leading to a dysfunction of this transmembrane protein, alterations in the cerebello-thalamic pathway and impaired striatal plasticity. To elucidate underlying pathogenic mechanisms, we investigated induced pluripotent stem cell (iPSC)-derived striatal medium spiny neurons (MSNs) from two myoclonus-dystonia patients carrying a heterozygous mutation in the SGCE gene (c.298T>G and c.304C>T with protein changes W100G and R102X) in comparison to two matched healthy control lines. Calcium imaging showed significantly elevated basal intracellular Ca2+ content and lower frequency of spontaneous Ca2+ signals in SGCE MSNs. Blocking of voltage-gated Ca2+ channels by verapamil was less efficient in suppressing KCl-induced Ca2+ peaks of SGCE MSNs. Ca2+ amplitudes upon glycine and acetylcholine applications were increased in SGCE MSNs, but not after GABA or glutamate applications. Expression of voltage-gated Ca2+ channels and most ionotropic receptor subunits was not altered. SGCE MSNs showed significantly reduced GABAergic synaptic density. Whole-cell patch-clamp recordings displayed elevated amplitudes of miniature postsynaptic currents and action potentials in SGCE MSNs. Our data contribute to a better understanding of the pathophysiology and the development of novel therapeutic strategies for myoclonus-dystonia.
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Grants
- Karlheinz-Hartmann-Stiftung (Hannover, Germany), Ellen-Schmidt-Program (Hannover, Germany), Hermann and Lilly Schilling Stiftung für medizinische Forschung im Stifterverband, German Research Foundation (FOR2488) Karlheinz-Hartmann-Stiftung (Hannover, Germany), Ellen-Schmidt-Program (Hannover, Germany), Hermann and Lilly Schilling Stiftung für medizinische Forschung im Stifterverband, German Research Foundation (FOR2488)
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Affiliation(s)
- Anna Kutschenko
- Department of Neurology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (A.K.); (S.S.); (N.K.); (T.G.); (L.M.H.); (J.H.)
| | - Selma Staege
- Department of Neurology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (A.K.); (S.S.); (N.K.); (T.G.); (L.M.H.); (J.H.)
- Center for Systems Neuroscience, Bünteweg 2, 30559 Hannover, Germany
| | - Karen Grütz
- Institute of Neurogenetics, University of Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany; (K.G.); (A.G.); (P.S.)
| | - Hannes Glaß
- Translational Neurodegeneration Section “Albrecht-Kossel“, Department of Neurology, University Medical Center, University of Rostock, Gehlsheimer Str. 20, 18147 Rostock, Germany; (H.G.); (A.H.)
| | - Norman Kalmbach
- Department of Neurology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (A.K.); (S.S.); (N.K.); (T.G.); (L.M.H.); (J.H.)
| | - Thomas Gschwendtberger
- Department of Neurology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (A.K.); (S.S.); (N.K.); (T.G.); (L.M.H.); (J.H.)
- Center for Systems Neuroscience, Bünteweg 2, 30559 Hannover, Germany
| | - Lisa M. Henkel
- Department of Neurology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (A.K.); (S.S.); (N.K.); (T.G.); (L.M.H.); (J.H.)
- Center for Systems Neuroscience, Bünteweg 2, 30559 Hannover, Germany
| | - Johanne Heine
- Department of Neurology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (A.K.); (S.S.); (N.K.); (T.G.); (L.M.H.); (J.H.)
| | - Anne Grünewald
- Institute of Neurogenetics, University of Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany; (K.G.); (A.G.); (P.S.)
| | - Andreas Hermann
- Translational Neurodegeneration Section “Albrecht-Kossel“, Department of Neurology, University Medical Center, University of Rostock, Gehlsheimer Str. 20, 18147 Rostock, Germany; (H.G.); (A.H.)
- German Center for Neurodegenerative Diseases Rostock/Greifswald, 18147 Rostock, Germany
- Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center, University of Rostock, 18147 Rostock, Germany
| | - Philip Seibler
- Institute of Neurogenetics, University of Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany; (K.G.); (A.G.); (P.S.)
| | - Florian Wegner
- Department of Neurology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; (A.K.); (S.S.); (N.K.); (T.G.); (L.M.H.); (J.H.)
- Center for Systems Neuroscience, Bünteweg 2, 30559 Hannover, Germany
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12
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Bräuer S, Günther R, Sterneckert J, Glaß H, Hermann A. Human Spinal Motor Neurons Are Particularly Vulnerable to Cerebrospinal Fluid of Amyotrophic Lateral Sclerosis Patients. Int J Mol Sci 2020; 21:ijms21103564. [PMID: 32443559 PMCID: PMC7278966 DOI: 10.3390/ijms21103564] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 03/12/2020] [Revised: 05/09/2020] [Accepted: 05/13/2020] [Indexed: 02/07/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is the most common and devastating motor neuron (MN) disease. Its pathophysiological cascade is still enigmatic. More than 90% of ALS patients suffer from sporadic ALS, which makes it specifically demanding to generate appropriate model systems. One interesting aspect considering the seeding, spreading and further disease development of ALS is the cerebrospinal fluid (CSF). We therefore asked whether CSF from sporadic ALS patients is capable of causing disease typical changes in human patient-derived spinal MN cultures and thus could represent a novel model system for sporadic ALS. By using induced pluripotent stem cell (iPSC)-derived MNs from healthy controls and monogenetic forms of ALS we could demonstrate a harmful effect of ALS-CSF on healthy donor-derived human MNs. Golgi fragmentation—a typical finding in lower organism models and human postmortem tissue—was induced solely by addition of ALS-CSF, but not control-CSF. No other neurodegenerative hallmarks—including pathological protein aggregation—were found, underpinning Golgi fragmentation as early event in the neurodegenerative cascade. Of note, these changes occurred predominantly in MNs, the cell type primarily affected in ALS. We thus present a novel way to model early features of sporadic ALS.
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Affiliation(s)
- Stefan Bräuer
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany; (S.B.); (R.G.)
- Department of Neurology, Städtisches Klinikum Dresden, 01129 Dresden, Germany
| | - René Günther
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany; (S.B.); (R.G.)
- German Center for Neurodegenerative Diseases (DZNE), 01307 Dresden, Germany
| | - Jared Sterneckert
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, 01307 Dresden, Germany;
| | - Hannes Glaß
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany;
| | - Andreas Hermann
- Department of Neurology, Technische Universität Dresden, 01307 Dresden, Germany; (S.B.); (R.G.)
- Translational Neurodegeneration Section “Albrecht-Kossel”, Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany;
- German Center for Neurodegenerative Diseases (DZNE) Rostock, 18147 Rostock, Germany
- Correspondence: ; Tel.: +49-(0)-381-494-9541
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13
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Pal A, Glaß H, Naumann M, Kreiter N, Japtok J, Sczech R, Hermann A. High content organelle trafficking enables disease state profiling as powerful tool for disease modelling. Sci Data 2018; 5:180241. [PMID: 30422121 PMCID: PMC6233479 DOI: 10.1038/sdata.2018.241] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [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: 04/09/2018] [Accepted: 09/10/2018] [Indexed: 01/15/2023] Open
Abstract
Neurodegenerative diseases pose a complex field with various neuronal subtypes and distinct differentially affected intra-neuronal compartments. Modelling of neurodegeneration requires faithful in vitro separation of axons and dendrites, their distal and proximal compartments as well as organelle tracking with defined retrograde versus anterograde directionality. We use microfluidic chambers to achieve compartmentalization and established high throughput live organelle imaging at standardized distal and proximal axonal readout sites in iPSC-derived spinal motor neuron cultures from human amyotrophic lateral sclerosis patients to study trafficking phenotypes of potential disease relevance. Our semi-automated pipeline of organelle tracking with FIJI and KNIME yields quantitative, multiparametric high content phenotypic signatures of organelle morphology and their trafficking in axons. We provide here the resultant large datasets to enable systemic signature interrogations for comprehensive and predictive disease modelling, mechanistic dissection and secondary hit validation (e.g. drug screens, genetic screens). Due to the nearly complete coverage of analysed motility events, our quantitative method yields a bias-free statistical power superior over common analyses of a handful of manual kymographs.
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Affiliation(s)
- Arun Pal
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Hannes Glaß
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Marcel Naumann
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany
| | - Nicole Kreiter
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany
| | - Julia Japtok
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
| | - Ronny Sczech
- Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Dresden, Germany
| | - Andreas Hermann
- Division of Neurodegenerative Diseases, Department of Neurology, Technische Universität Dresden, Dresden, Germany
- German Center for Neurodegenerative Diseases (DZNE) Dresden, Dresden, Germany
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität Dresden, Dresden, Germany
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15
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Iesalnieks I, Kilger A, Glaß H, Müller-Wille R, Piso P, Schlitt HJ, Agha A. Postoperative Komplikationen nach intestinalen Resektionen verschlechtern die Langzeitprognose der Patienten mit M. Crohn. Z Gastroenterol 2008. [DOI: 10.1055/s-0028-1096429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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