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Liu Y, Tan D, Ma K, Luo H, Mao J, Luo J, Shen Q, Xu L, Yang S, Ge L, Guo Y, Zhang H, Xiong H. Lama1 upregulation prolongs the lifespan of the dy H/dy H mouse model of LAMA2-related congenital muscular dystrophy. J Genet Genomics 2024:S1673-8527(24)00118-8. [PMID: 38777118 DOI: 10.1016/j.jgg.2024.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2024] [Revised: 05/17/2024] [Accepted: 05/18/2024] [Indexed: 05/25/2024]
Abstract
LAMA2-related congenital muscular dystrophy (LAMA2-CMD), characterized by laminin-α2 deficiency, is debilitating and ultimately fatal. To date, no effective therapy has been clinically available. Laminin-α1, which shares significant similarities with laminin-α2, has been proven as a viable compensatory modifier. To evaluate its clinical applicability, we establish a Lama2 exon-3 deletion mouse model (dyH/dyH). The dyH/dyH mice exhibit early lethality and typical LAMA2-CMD phenotypes, allowing the evaluation of various endpoints. In dyH/dyH mice treated with synergistic activation mediator-based CRISPRa-mediated Lama1 upregulation, a nearly doubled median survival is observed, as well as improvements in weight and grip. Significant therapeutical effects are revealed by MRI, serum biochemical indices, and muscle pathology studies. Treating LAMA2-CMD with LAMA1 upregulation is feasible and that early intervention can alleviate symptoms and extend lifespan. Additionally, we reveal limitations of LAMA1 upregulation, including high-dose mortality and non-sustained expression, which require further optimization in future studies.
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Affiliation(s)
- Yidan Liu
- Department of Pediatrics, Peking University First Hospital, Beijing 102600, China; State Key Laboratory of Vascular Homeostasis and Remodeling, The Institute of Cardiovascular Sciences, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Dandan Tan
- Department of Pediatrics, Peking University First Hospital, Beijing 102600, China; Department of Neurology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Kaiyue Ma
- Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200030, China; Department of Genetics, Yale School of Medicine, New Haven, CT 06510, USA
| | - Huaxia Luo
- Department of Pediatrics, Peking University First Hospital, Beijing 102600, China
| | - Jingping Mao
- State Key Laboratory of Vascular Homeostasis and Remodeling, The Institute of Cardiovascular Sciences, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Jihang Luo
- Department of Pediatrics, Peking University First Hospital, Beijing 102600, China; State Key Laboratory of Vascular Homeostasis and Remodeling, The Institute of Cardiovascular Sciences, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Qiang Shen
- State Key Laboratory of Vascular Homeostasis and Remodeling, The Institute of Cardiovascular Sciences, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Luzheng Xu
- Medical and Health Analysis Center, Peking University, Beijing 100191, China
| | - Shiqi Yang
- Department of Pediatrics, Peking University First Hospital, Beijing 102600, China; State Key Laboratory of Vascular Homeostasis and Remodeling, The Institute of Cardiovascular Sciences, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Lin Ge
- Department of Genetics, Yale School of Medicine, New Haven, CT 06510, USA; Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Yuxuan Guo
- State Key Laboratory of Vascular Homeostasis and Remodeling, The Institute of Cardiovascular Sciences, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China.
| | - Hong Zhang
- State Key Laboratory of Vascular Homeostasis and Remodeling, The Institute of Cardiovascular Sciences, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China.
| | - Hui Xiong
- Department of Pediatrics, Peking University First Hospital, Beijing 102600, China; Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China.
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Thewissen RMJ, Post MA, Maas DM, Veizaj R, Wagenaar I, Alsady M, Kools J, Bouman K, Zweers H, Meregalli PG, van der Kooi AJ, van Doorn PA, Groothuis JT, Lefeber DJ, Voermans NC. Oral ribose supplementation in dystroglycanopathy: A single case study. JIMD Rep 2024; 65:171-181. [PMID: 38736632 PMCID: PMC11078721 DOI: 10.1002/jmd2.12394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/16/2023] [Accepted: 08/18/2023] [Indexed: 05/14/2024] Open
Abstract
Three forms of muscular dystrophy-dystroglycanopathies are linked to the ribitol pathway. These include mutations in the isoprenoid synthase domain-containing protein (ISPD), fukutin-related protein (FKRP), and fukutin (FKTN) genes. The aforementioned enzymes are required for generation of the ribitol phosphate linkage in the O-glycan of alpha-dystroglycan. Mild cases of dystroglycanopathy present with slowly progressive muscle weakness, while in severe cases the eyes and brain are also involved. Previous research showed that ribose increased the intracellular concentrations of cytidine diphosphate-ribitol (CDP-ribitol) and had a therapeutic effect. Here, we report the safety and effects of oral ribose supplementation during 6 months in a patient with limb girdle muscular dystrophy type 2I (LGMD2I) due to a homozygous FKRP mutation. Ribose was well tolerated in doses of 9 g or 18 g/day. Supplementation with 18 g of ribose resulted in a decrease of creatine kinase levels of 70%. Moreover, metabolomics showed a significant increase in CDP-ribitol levels with 18 g of ribose supplementation (p < 0.001). Although objective improvement in clinical and patient-reported outcome measures was not observed, the patient reported subjective improvement of muscle strength, fatigue, and pain. This case study indicates that ribose supplementation in patients with dystroglycanopathy is safe and highlights the importance for future studies regarding its potential effects.
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Affiliation(s)
- R. M. J. Thewissen
- Department of NeurologyDonders Institute for Brain, Cognition and Behavior, Radboud University Medical CenterNijmegenThe Netherlands
| | - M. A. Post
- Department of NeurologyDonders Institute for Brain, Cognition and Behavior, Radboud University Medical CenterNijmegenThe Netherlands
| | - D. M. Maas
- Department of RehabilitationDonders Institute for Brain, Cognition and Behavior, Radboud University Medical CenterNijmegenThe Netherlands
| | - R. Veizaj
- Translational Metabolic Laboratory, Department of Laboratory MedicineRadboud University Medical CenterNijmegenThe Netherlands
| | - I. Wagenaar
- Translational Metabolic Laboratory, Department of Laboratory MedicineRadboud University Medical CenterNijmegenThe Netherlands
| | - M. Alsady
- Department of NeurologyDonders Institute for Brain, Cognition and Behavior, Radboud University Medical CenterNijmegenThe Netherlands
| | - J. Kools
- Department of NeurologyDonders Institute for Brain, Cognition and Behavior, Radboud University Medical CenterNijmegenThe Netherlands
| | - K. Bouman
- Department of NeurologyDonders Institute for Brain, Cognition and Behavior, Radboud University Medical CenterNijmegenThe Netherlands
- Department of Pediatric NeurologyDonders Institute for Brain, Cognition and Behavior, Amalia Children's Hospital, Radboud University Medical CenterNijmegenThe Netherlands
| | - H. Zweers
- Department of GastroenterologyRadboud University Medical CenterNijmegenThe Netherlands
| | - P. G. Meregalli
- Department of CardiologyAmsterdam UMCAmsterdamThe Netherlands
| | | | | | - J. T. Groothuis
- Department of RehabilitationDonders Institute for Brain, Cognition and Behavior, Radboud University Medical CenterNijmegenThe Netherlands
| | - D. J. Lefeber
- Department of NeurologyDonders Institute for Brain, Cognition and Behavior, Radboud University Medical CenterNijmegenThe Netherlands
- Translational Metabolic Laboratory, Department of Laboratory MedicineRadboud University Medical CenterNijmegenThe Netherlands
| | - N. C. Voermans
- Department of NeurologyDonders Institute for Brain, Cognition and Behavior, Radboud University Medical CenterNijmegenThe Netherlands
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Imae R, Manya H, Tsumoto H, Umezawa K, Miura Y, Endo T. Changes in the amount of nucleotide sugars in aged mouse tissues. Glycobiology 2024; 34:cwae032. [PMID: 38598324 DOI: 10.1093/glycob/cwae032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 04/03/2024] [Accepted: 04/08/2024] [Indexed: 04/12/2024] Open
Abstract
Aging affects tissue glycan profiles, which may alter cellular functions and increase the risk of age-related diseases. Glycans are biosynthesized by glycosyltransferases using the corresponding nucleotide sugar, and the availability of nucleotide sugars affects glycosylation efficiency. However, the effects of aging on nucleotide sugar profiles and contents are yet to be elucidated. Therefore, this study aimed to investigate the effects of aging on nucleotide sugars using a new LC-MS/MS method. Specifically, the new method was used to determine the nucleotide sugar contents of various tissues (brain, liver, heart, skeletal muscle, kidney, lung, and colon) of male C57BL/6NCr mice (7- or 26-month-old). Characteristic age-associated nucleotide sugar changes were observed in each tissue sample. Particularly, there was a significant decrease in UDP-glucuronic acid content in the kidney of aged mice and a decrease in the contents of several nucleotide sugars, including UDP-N-acetylgalactosamine, in the brain of aged mice. Additionally, there were variations in nucleotide sugar profiles among the tissues examined regardless of the age. The kidneys had the highest concentration of UDP-glucuronic acid among the seven tissues. In contrast, the skeletal muscle had the lowest concentration of total nucleotide sugars among the tissues; however, CMP-N-acetylneuraminic acid and CDP-ribitol were relatively enriched. Conclusively, these findings may contribute to the understanding of the roles of glycans in tissue aging.
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Affiliation(s)
- Rieko Imae
- Molecular Glycobiology, Research Team for Mechanism of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo 173-0015, Japan
| | - Hiroshi Manya
- Molecular Glycobiology, Research Team for Mechanism of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo 173-0015, Japan
| | - Hiroki Tsumoto
- Proteome Research, Research Team for Mechanism of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo 173-0015, Japan
| | - Keitaro Umezawa
- Proteome Research, Research Team for Mechanism of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo 173-0015, Japan
| | - Yuri Miura
- Proteome Research, Research Team for Mechanism of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo 173-0015, Japan
| | - Tamao Endo
- Molecular Glycobiology, Research Team for Mechanism of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo 173-0015, Japan
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Li T, Zhang M, Lv P, Yang Y, Schmidt RR, Peng P. Synthesis of Core M3 Matriglycan Constituents via an Additive-Controlled 1,2- cis-Xylopyranosylation with O-Xylosyl Imidates as Donors. J Org Chem 2024; 89:804-809. [PMID: 38146924 DOI: 10.1021/acs.joc.3c02339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
A highly stereoselective strategy for 1,2-cis-xylopyranoside bond formation was established via a preactivation-based, additive-modulated trichloroacetimidate glycosidation strategy. The current protocol is mild, practical, and successful with various xylopyranosyl donors and glycosyl acceptors, including acceptors that are reported to be less reactive due to steric hindrance. The utility of this method was demonstrated with the facile assembly of matriglycan constituent tetra- and hexasaccharides.
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Affiliation(s)
- Tianlu Li
- National Glycoengineering Research Center, Shandong Technology Innovation Center of Carbohydrate, Qingdao, Shandong 266237, China
| | - Miaomiao Zhang
- National Glycoengineering Research Center, Shandong Technology Innovation Center of Carbohydrate, Qingdao, Shandong 266237, China
| | - Panpan Lv
- National Glycoengineering Research Center, Shandong Technology Innovation Center of Carbohydrate, Qingdao, Shandong 266237, China
| | - Yue Yang
- National Glycoengineering Research Center, Shandong Technology Innovation Center of Carbohydrate, Qingdao, Shandong 266237, China
| | - Richard R Schmidt
- Department of Chemistry, University of Konstanz, D-78457 Konstanz, Germany
| | - Peng Peng
- National Glycoengineering Research Center, Shandong Technology Innovation Center of Carbohydrate, Qingdao, Shandong 266237, China
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Koff M, Monagas-Valentin P, Novikov B, Chandel I, Panin V. Protein O-mannosylation: one sugar, several pathways, many functions. Glycobiology 2023; 33:911-926. [PMID: 37565810 PMCID: PMC10859634 DOI: 10.1093/glycob/cwad067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 07/23/2023] [Accepted: 07/31/2023] [Indexed: 08/12/2023] Open
Abstract
Recent research has unveiled numerous important functions of protein glycosylation in development, homeostasis, and diseases. A type of glycosylation taking the center stage is protein O-mannosylation, a posttranslational modification conserved in a wide range of organisms, from yeast to humans. In animals, protein O-mannosylation plays a crucial role in the nervous system, whereas protein O-mannosylation defects cause severe neurological abnormalities and congenital muscular dystrophies. However, the molecular and cellular mechanisms underlying protein O-mannosylation functions and biosynthesis remain not well understood. This review outlines recent studies on protein O-mannosylation while focusing on the functions in the nervous system, summarizes the current knowledge about protein O-mannosylation biosynthesis, and discusses the pathologies associated with protein O-mannosylation defects. The evolutionary perspective revealed by studies in the Drosophila model system are also highlighted. Finally, the review touches upon important knowledge gaps in the field and discusses critical questions for future research on the molecular and cellular mechanisms associated with protein O-mannosylation functions.
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Affiliation(s)
- Melissa Koff
- Department of Biochemistry and Biophysics, AgriLife Research, Texas A&M University, College Station, College Station, TX 77843, United States
| | - Pedro Monagas-Valentin
- Department of Biochemistry and Biophysics, AgriLife Research, Texas A&M University, College Station, College Station, TX 77843, United States
| | - Boris Novikov
- Department of Biochemistry and Biophysics, AgriLife Research, Texas A&M University, College Station, College Station, TX 77843, United States
| | - Ishita Chandel
- Department of Biochemistry and Biophysics, AgriLife Research, Texas A&M University, College Station, College Station, TX 77843, United States
| | - Vladislav Panin
- Department of Biochemistry and Biophysics, AgriLife Research, Texas A&M University, College Station, College Station, TX 77843, United States
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Gholap RS, Bharucha-Goebel DX, Shats DA, Panchal BK, Chong J, Levin MR, Alexander JL. Surgical Management of Iris Bombe in Muscle-Eye-Brain Disease. J Pediatr Ophthalmol Strabismus 2023; 60:e35-e37. [PMID: 37478202 DOI: 10.3928/01913913-20230518-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/23/2023]
Abstract
A 2-year-old girl with severe muscular dystrophy presented with unilateral eye pain and corneal clouding. She was found to have absent red reflex, hypotonia, cerebral hypoplasia, and iris bombe on ultrasound biomicroscopy, a feature not previously reported in this syndrome. She responded favorably to surgical management. Iris bombe can be a cause of glaucoma in muscle-eye-brain disease. This highlights the importance of incorporating ultrasound biomicroscopy into the diagnostic algorithm of muscle-eye-brain disease and other types of congenital syndromic glaucoma. [J Pediatr Ophthalmol Strabismus. 2023;60(4):e35-e37.].
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7
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Den Hartog L, Asakura A. Implications of notch signaling in duchenne muscular dystrophy. Front Physiol 2022; 13:984373. [PMID: 36237531 PMCID: PMC9553129 DOI: 10.3389/fphys.2022.984373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/05/2022] [Indexed: 11/13/2022] Open
Abstract
This review focuses upon the implications of the Notch signaling pathway in muscular dystrophies, particularly Duchenne muscular dystrophy (DMD): a pervasive and catastrophic condition concerned with skeletal muscle degeneration. Prior work has defined the pathogenesis of DMD, and several therapeutic approaches have been undertaken in order to regenerate skeletal muscle tissue and ameliorate the phenotype. There is presently no cure for DMD, but a promising avenue for novel therapies is inducing muscle regeneration via satellite cells (muscle stem cells). One specific target using this approach is the Notch signaling pathway. The canonical Notch signaling pathway has been well-characterized and it ultimately governs cell fate decision, cell proliferation, and induction of differentiation. Additionally, inhibition of the Notch signaling pathway has been directly implicated in the deficits seen with muscular dystrophies. Here, we explore the connection between the Notch signaling pathway and DMD, as well as how Notch signaling may be targeted to improve the muscle degeneration seen in muscular dystrophies.
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