1
|
Mikhail AI, Nagy PL, Manta K, Rouse N, Manta A, Ng SY, Nagy MF, Smith P, Lu JQ, Nederveen JP, Ljubicic V, Tarnopolsky MA. Aerobic exercise elicits clinical adaptations in myotonic dystrophy type 1 patients independent of pathophysiological changes. J Clin Invest 2022; 132:156125. [PMID: 35316212 PMCID: PMC9106360 DOI: 10.1172/jci156125] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [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: 11/11/2021] [Accepted: 03/17/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Myotonic dystrophy type 1 (DM1) is a complex life-limiting neuromuscular disorder characterized by severe skeletal muscle atrophy, weakness, and cardio-respiratory defects. Exercised DM1 mice exhibit numerous physiological benefits that are underpinned by reduced CUG foci and improved alternative splicing. However, the efficacy of physical activity in patients is unknown. METHODS Eleven genetically diagnosed DM1 patients were recruited to examine the extent to which 12-weeks of cycling can recuperate clinical, and physiological metrics. Furthermore, we studied the underlying molecular mechanisms through which exercise elicits benefits in skeletal muscle of DM1 patients. RESULTS DM1 was associated with impaired muscle function, fitness, and lung capacity. Cycling evoked several clinical, physical, and metabolic advantages in DM1 patients. We highlight that exercise-induced molecular and cellular alterations in patients do not conform with previously published data in murine models and propose a significant role of mitochondrial function in DM1 pathology. Lastly, we discovered a subset of small nucleolar RNAs (snoRNAs) that correlated to indicators of disease severity. CONCLUSION With no available cures, our data supports the efficacy of exercise as a primary intervention to partially mitigate the clinical progression of DM1. Additionally, we provide evidence for the involvement of snoRNAs and other noncoding RNAs in DM1 pathophysiology. TRIAL REGISTRATION This trial was approved by the HiREB committee (#7901) and registered under ClinicalTrials.gov (NCT04187482). FUNDING This work was primarily supported by Neil and Leanne Petroff. This study was also supported by a Canadian Institutes of Health Research Foundation Grant to MAT (#143325).
Collapse
Affiliation(s)
- Andrew I Mikhail
- Department of Kinesiology, McMaster University, Hamilton, Canada
| | - Peter L Nagy
- Department of Neurology, Praxis Genomics, Atlanta, United States of America
| | - Katherine Manta
- Department of Pediatrics, McMaster University Children's Hospital, Hamilton, Canada
| | - Nicholas Rouse
- Department of Neurology, Praxis Genomics, Atlanta, United States of America
| | - Alexander Manta
- Department of Kinesiology, McMaster University, Hamilton, Canada
| | - Sean Y Ng
- Department of Kinesiology, McMaster University, Hamilton, Canada
| | - Michael F Nagy
- Department of Neurology, Praxis Genomics, Atlanta, United States of America
| | - Paul Smith
- Department of Neurology, Praxis Genomics, Atlanta, United States of America
| | - Jian-Qiang Lu
- Pathology and Molecular Medicine/Neuropathology, McMaster University, Hamilton, Canada
| | - Joshua P Nederveen
- Department of Pediatrics, McMaster University Children's Hospital, Hamilton, Canada
| | | | - Mark A Tarnopolsky
- Department of Pediatrics, McMaster University Children's Hospital, Hamilton, Canada
| |
Collapse
|
2
|
Fagerberg CR, Taylor A, Distelmaier F, Schrøder HD, Kibæk M, Wieczorek D, Tarnopolsky M, Brady L, Larsen MJ, Jamra RA, Seibt A, Hejbøl EK, Gade E, Markovic L, Klee D, Nagy P, Rouse N, Agarwal P, Dolinsky VW, Bakovic M. Choline transporter-like 1 deficiency causes a new type of childhood-onset neurodegeneration. Brain 2020; 143:94-111. [PMID: 31855247 DOI: 10.1093/brain/awz376] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 10/22/2018] [Revised: 09/11/2019] [Accepted: 10/07/2019] [Indexed: 12/14/2022] Open
Abstract
Cerebral choline metabolism is crucial for normal brain function, and its homoeostasis depends on carrier-mediated transport. Here, we report on four individuals from three families with neurodegenerative disease and homozygous frameshift mutations (Asp517Metfs*19, Ser126Metfs*8, and Lys90Metfs*18) in the SLC44A1 gene encoding choline transporter-like protein 1. Clinical features included progressive ataxia, tremor, cognitive decline, dysphagia, optic atrophy, dysarthria, as well as urinary and bowel incontinence. Brain MRI demonstrated cerebellar atrophy and leukoencephalopathy. Moreover, low signal intensity in globus pallidus with hyperintensive streaking and low signal intensity in substantia nigra were seen in two individuals. The Asp517Metfs*19 and Ser126Metfs*8 fibroblasts were structurally and functionally indistinguishable. The most prominent ultrastructural changes of the mutant fibroblasts were reduced presence of free ribosomes, the appearance of elongated endoplasmic reticulum and strikingly increased number of mitochondria and small vesicles. When chronically treated with choline, those characteristics disappeared and mutant ultrastructure resembled healthy control cells. Functional analysis revealed diminished choline transport yet the membrane phosphatidylcholine content remained unchanged. As part of the mechanism to preserve choline and phosphatidylcholine, choline transporter deficiency was implicated in impaired membrane homeostasis of other phospholipids. Choline treatments could restore the membrane lipids, repair cellular organelles and protect mutant cells from acute iron overload. In conclusion, we describe a novel childhood-onset neurometabolic disease caused by choline transporter deficiency with autosomal recessive inheritance.
Collapse
Affiliation(s)
| | - Adrian Taylor
- Department of Human Health and Nutritional Sciences, University of Guelph, Canada
| | - Felix Distelmaier
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Children's Hospital, Heinrich-Heine University, Düsseldorf, Germany
| | | | - Maria Kibæk
- Children Hospital of H. C Andersen, Odense University Hospital, Odense, Denmark
| | - Dagmar Wieczorek
- Institute of Human Genetics, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Mark Tarnopolsky
- Department of Pediatrics, Neuromuscular and Neurometabolic Clinic, McMaster University Medical Centre, Hamilton, Canada
| | - Lauren Brady
- Department of Pediatrics, Neuromuscular and Neurometabolic Clinic, McMaster University Medical Centre, Hamilton, Canada
| | - Martin J Larsen
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
| | - Rami A Jamra
- Institute of Human Genetics, Leipzig University, Germany and Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Annette Seibt
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, University Children's Hospital, Heinrich-Heine University, Düsseldorf, Germany
| | | | - Else Gade
- Department of Ophthalmology, Odense University Hospital, 5000 Odense C, Denmark
| | - Ljubo Markovic
- Department of Radiology, Odense University Hospital, 5000 Odense C, Denmark
| | - Dirk Klee
- Department of Diagnostic and Interventional Radiology, Heinrich-Heine University, Düsseldorf, Germany
| | | | | | - Prasoon Agarwal
- Department of Pharmacology and Therapeutics, University of Manitoba, Canada
| | - Vernon W Dolinsky
- Department of Pharmacology and Therapeutics, University of Manitoba, Canada
| | - Marica Bakovic
- Department of Human Health and Nutritional Sciences, University of Guelph, Canada
| |
Collapse
|
3
|
Nagy PL, Olasz J, Neparáczki E, Rouse N, Kapuria K, Cano S, Chen H, Di Cristofaro J, Runfeldt G, Ekomasova N, Maróti Z, Jeney J, Litvinov S, Dzhaubermezov M, Gabidullina L, Szentirmay Z, Szabados G, Zgonjanin D, Chiaroni J, Behar DM, Khusnutdinova E, Underhill PA, Kásler M. Determination of the phylogenetic origins of the Árpád Dynasty based on Y chromosome sequencing of Béla the Third. Eur J Hum Genet 2020; 29:164-172. [PMID: 32636469 PMCID: PMC7809292 DOI: 10.1038/s41431-020-0683-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 11/05/2019] [Revised: 06/16/2020] [Accepted: 06/25/2020] [Indexed: 12/31/2022] Open
Abstract
We set out to identify the origins of the Árpád Dynasty based on genome sequencing of DNA derived from the skeletal remains of Hungarian King Béla III (1172–1196) and eight additional individuals (six males, two females) originally interred at the Royal Basilica of Székesfehérvár. Y-chromosome analysis established that two individuals, Béla III and HU52 assign to haplogroups R-Z2125 whose distribution centres near South Central Asia with subsidiary expansions in the regions of modern Iran, the Volga Ural region and the Caucasus. Out of a cohort of 4340 individuals from these geographic areas, we acquired whole-genome data from 208 individuals derived for the R-Z2123 haplogroup. From these data we have established that the closest living kin of the Árpád Dynasty are R-SUR51 derived modern day Bashkirs predominantly from the Burzyansky and Abzelilovsky districts of Bashkortostan in the Russian Federation. Our analysis also reveals the existence of SNPs defining a novel Árpád Dynasty specific haplogroup R-ARP. Framed within the context of a high resolution R-Z2123 phylogeny, the ancestry of the first Hungarian royal dynasty traces to the region centering near Northern Afghanistan about 4500 years ago and identifies the Bashkirs as their closest kin, with a separation date between the two populations at the beginning of the first millennium CE.
Collapse
Affiliation(s)
- Péter L Nagy
- Department of Pathology, Laboratory of Personalized Genomic Medicine, Columbia University, New York, NY, USA. .,Praxis Genomics LLC, Atlanta, GA, USA.
| | - Judit Olasz
- National Institute of Oncology, Budapest, Hungary
| | - Endre Neparáczki
- Department of Archaeogenetics, Institute of Hungarian Research, Budapest, Hungary.,Department of Genetics, University of Szeged, Szeged, Hungary
| | - Nicholas Rouse
- Department of Pathology, Laboratory of Personalized Genomic Medicine, Columbia University, New York, NY, USA.,MNG Laboratories LLC, Atlanta, GA, USA
| | | | - Samantha Cano
- Department of Pathology, Laboratory of Personalized Genomic Medicine, Columbia University, New York, NY, USA.,Boston's Children's Hospital, Boston, MA, USA
| | - Huijie Chen
- Department of Pathology, Laboratory of Personalized Genomic Medicine, Columbia University, New York, NY, USA.,MNG Laboratories LLC, Atlanta, GA, USA
| | - Julie Di Cristofaro
- Aix Marseille Université, CNRS, EFS, ADES, "Biologie des Groupes Sanguins", Marseille, France
| | | | - Natalia Ekomasova
- Department of Genetics and Fundamental Medicine, Bashkir State University, Ufa, Russia.,Institute of Biochemistry and Genetics - Subdivision of the Ufa Federal Research Centre of Russian Academy of Sciences, Ufa, Russia
| | - Zoltán Maróti
- Department of Archaeogenetics, Institute of Hungarian Research, Budapest, Hungary.,Department of Pediatrics and Pediatric Health Center, University of Szeged, Szeged, Hungary
| | - János Jeney
- Department of Archaeogenetics, Institute of Hungarian Research, Budapest, Hungary
| | - Sergey Litvinov
- Department of Genetics and Fundamental Medicine, Bashkir State University, Ufa, Russia.,Institute of Biochemistry and Genetics - Subdivision of the Ufa Federal Research Centre of Russian Academy of Sciences, Ufa, Russia
| | - Murat Dzhaubermezov
- Department of Genetics and Fundamental Medicine, Bashkir State University, Ufa, Russia.,Institute of Biochemistry and Genetics - Subdivision of the Ufa Federal Research Centre of Russian Academy of Sciences, Ufa, Russia
| | - Lilya Gabidullina
- Department of Genetics and Fundamental Medicine, Bashkir State University, Ufa, Russia
| | | | - György Szabados
- King St. Stephen Museum, Székesfehérvár, Hungary.,Gyula Siklósi Research Centre for Urban History Székesfehérvár, Székesfehérvár, Hungary.,Gyula László Department and Archive, Institute of Hungarian Research, Budapest, Hungary
| | - Dragana Zgonjanin
- Institute of Forensic Medicine, Clinical Center of Vojvodina, Novi Sad, Serbia.,Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Jacques Chiaroni
- Aix Marseille Université, CNRS, EFS, ADES, "Biologie des Groupes Sanguins", Marseille, France
| | - Doron M Behar
- Estonian Biocentre, Institute of Genomics, University of Tartu, Tartu, Estonia
| | - Elza Khusnutdinova
- Department of Genetics and Fundamental Medicine, Bashkir State University, Ufa, Russia.,Institute of Biochemistry and Genetics - Subdivision of the Ufa Federal Research Centre of Russian Academy of Sciences, Ufa, Russia
| | | | | |
Collapse
|
4
|
Fox KA, Wootton S, Marolf A, Rouse N, LeVan I, Spraker T, Miller M, Quackenbush S. Experimental Transmission of Bighorn Sheep Sinus Tumors to Bighorn Sheep (Ovis canadensis canadensis) and Domestic Sheep. Vet Pathol 2016; 53:1164-1171. [PMID: 27020536 DOI: 10.1177/0300985816634810] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 11/16/2022]
Abstract
Bighorn sheep sinus tumors are a recently described disease affecting the paranasal sinuses of Rocky Mountain bighorn sheep (Ovis canadensis canadensis). Several features of this disease suggest an infectious cause, although a specific etiologic agent has not been identified. To test the hypothesis that bighorn sheep sinus tumors are caused by an infectious agent, we inoculated 4 bighorn sheep lambs and 4 domestic sheep lambs intranasally with a cell-free filtrate derived from a naturally occurring bighorn sheep sinus tumor; we held 1 individual of each species as a control. Within 18 months after inoculation, all 4 inoculated domestic sheep (100%) and 1 of the 4 inoculated bighorn sheep (25%) developed tumors within the ethmoid sinuses or nasal conchae, with features similar to naturally occurring bighorn sheep sinus tumors. Neither of the uninoculated sheep developed tumors. Histologically, the experimentally transmitted tumors were composed of stellate to spindle cells embedded within a myxoid matrix, with marked bone production. Tumor cells stained positively with vimentin, S100, alpha smooth muscle actin, and osteocalcin, suggesting origin from a multipotent mesenchymal cell. A periosteal origin for these tumors is suspected. Immunohistochemical staining for the envelope protein of JSRV (with cross-reactivity to ENTV) was equivocal, and PCR assays specific for these agents were negative.
Collapse
Affiliation(s)
- K A Fox
- Colorado Division of Parks and Wildlife, Wildlife Health Program, Fort Collins, CO, USA Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - S Wootton
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - A Marolf
- Department of Environmental and Radiological Health Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - N Rouse
- Colorado Division of Parks and Wildlife, Wildlife Health Program, Fort Collins, CO, USA Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - I LeVan
- Colorado Division of Parks and Wildlife, Wildlife Health Program, Fort Collins, CO, USA
| | - T Spraker
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - M Miller
- Colorado Division of Parks and Wildlife, Wildlife Health Program, Fort Collins, CO, USA
| | - S Quackenbush
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| |
Collapse
|
5
|
Vardarajan B, Barral S, Kahn A, Sheikh S, Rouse N, Nagy P, Mayeux R. P3–004: Novel rare variants associated with late‐onset Alzheimer's disease candidate genes in Caribbean Hispanic families. Alzheimers Dement 2013. [DOI: 10.1016/j.jalz.2013.05.1073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
| | - Sandra Barral
- Columbia University Medical Center New York New York United States
| | - Amanda Kahn
- Columbia University Medical Center New York New York United States
| | - Stephanie Sheikh
- Columbia University Medical Center New York New York United States
| | - Nicholas Rouse
- Columbia University Medical Center New York New York United States
| | - Peter Nagy
- Columbia University Medical Center New York New York United States
| | | |
Collapse
|
6
|
Sachs LM, Amano T, Rouse N, Shi YB. Involvement of histone deacetylase at two distinct steps in gene regulation during intestinal development in Xenopus laevis. Dev Dyn 2001; 222:280-91. [PMID: 11668605 DOI: 10.1002/dvdy.1195] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Amphibian metamorphosis is marked by dramatic thyroid hormone (T(3))-induced changes including de novo morphogenesis, tissue remodeling and organ resorption through programmed cell death. These changes involve cascades of gene regulation initiated by thyroid hormone and its receptors. Previous studies suggest that chromatin remodeling involving changes in core histone acetylation plays a fundamental role in transcriptional regulation. A basic model has been suggested where targeted histone deacetylation is involved in transcriptional repression and histone acetylation is involved in transcriptional activation. On the other hand, the developmental roles of histone acetylation remain to be elucidated. Here we demonstrate that tadpole treatment with trichostatin A, a specific potent histone deacetylase inhibitor, blocks metamorphosis. Gene expression analyses show that trichostatin A induces the release of T(3)-response gene repression without affecting T(3)-induction of direct T(3)-response genes. However, the drug blocks the regulation of late T(3)-response genes, which may be responsible for its inhibitory effects on metamorphosis. These data support a role of deacetylases in transcriptional repression by unliganded T(3) receptor during premetamorphosis and another role at a downstream step of the gene regulation cascade induced by T(3) during metamorphosis.
Collapse
Affiliation(s)
- L M Sachs
- Unit on Molecular Morphogenesis, Laboratory of Gene Regulation and Development, NICHD/NIH, Bethesda, MD 20892, USA
| | | | | | | |
Collapse
|
7
|
Abstract
N-CoR (nuclear receptor corepressor) is a corepressor for multiple transcription factors including unliganded thyroid hormone receptors (TRs). In vitro, N-CoR can interact with the Sin3 corepressor, which in turn binds to the histone deacetylase Rpd3 (HDAC1), predicting the existence of a corepressor complex containing N-CoR, Sin3, and histone deacetylase. However, previous biochemical studies of endogenous Sin3 complexes have failed to find an N-CoR association. Xenopus laevis eggs and oocytes contain all of the necessary components for transcriptional repression by unliganded TRs. In this study, we report the biochemical fractionation of three novel macromolecular complexes containing N-CoR, two of which possess histone deacetylase activity, from Xenopus egg extract. One complex contains Sin3, Rpd3, and RbAp48; the second complex contains a Sin3-independent histone deacetylase; and the third complex lacks histone deacetylase activity. This study describes the first biochemical isolation of endogenous N-CoR-containing HDAC complexes and illustrates that N-CoR associates with distinct histone deacetylases that are both dependent and independent of Sin3. Immunoprecipitation studies show that N-CoR binds to unliganded TR expressed in the frog oocyte, confirming that N-CoR complexes are involved in repression by unliganded TR. These results suggest that N-CoR targets transcriptional repression of specific promoters through at least two distinct histone deacetylase pathways.
Collapse
Affiliation(s)
- P L Jones
- Unit of Molecular Morphogenesis, Laboratory of Molecular Embryology, NICHD, National Institutes of Health, Bethesda, Maryland 20892-5431 , USA
| | | | | | | | | |
Collapse
|