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Rossiaud L, Fragner P, Barbon E, Gardin A, Benabides M, Pellier E, Cosette J, El Kassar L, Giraud-Triboult K, Nissan X, Ronzitti G, Hoch L. Pathological modeling of glycogen storage disease type III with CRISPR/Cas9 edited human pluripotent stem cells. Front Cell Dev Biol 2023; 11:1163427. [PMID: 37250895 PMCID: PMC10213880 DOI: 10.3389/fcell.2023.1163427] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 05/02/2023] [Indexed: 05/31/2023] Open
Abstract
Introduction: Glycogen storage disease type III (GSDIII) is a rare genetic disease caused by mutations in the AGL gene encoding the glycogen debranching enzyme (GDE). The deficiency of this enzyme, involved in cytosolic glycogen degradation, leads to pathological glycogen accumulation in liver, skeletal muscles and heart. Although the disease manifests with hypoglycemia and liver metabolism impairment, the progressive myopathy is the major disease burden in adult GSDIII patients, without any curative treatment currently available. Methods: Here, we combined the self-renewal and differentiation capabilities of human induced pluripotent stem cells (hiPSCs) with cutting edge CRISPR/Cas9 gene editing technology to establish a stable AGL knockout cell line and to explore glycogen metabolism in GSDIII. Results: Following skeletal muscle cells differentiation of the edited and control hiPSC lines, our study reports that the insertion of a frameshift mutation in AGL gene results in the loss of GDE expression and persistent glycogen accumulation under glucose starvation conditions. Phenotypically, we demonstrated that the edited skeletal muscle cells faithfully recapitulate the phenotype of differentiated skeletal muscle cells of hiPSCs derived from a GSDIII patient. We also demonstrated that treatment with recombinant AAV vectors expressing the human GDE cleared the accumulated glycogen. Discussion: This study describes the first skeletal muscle cell model of GSDIII derived from hiPSCs and establishes a platform to study the mechanisms that contribute to muscle impairments in GSDIII and to assess the therapeutic potential of pharmacological inducers of glycogen degradation or gene therapy approaches.
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Affiliation(s)
- Lucille Rossiaud
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
| | - Pascal Fragner
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
| | - Elena Barbon
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
| | - Antoine Gardin
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
| | - Manon Benabides
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
| | - Emilie Pellier
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
| | | | - Lina El Kassar
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
| | - Karine Giraud-Triboult
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
| | - Xavier Nissan
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
| | - Giuseppe Ronzitti
- Genethon, Evry, France
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
| | - Lucile Hoch
- CECS, I-Stem, Corbeil-Essonnes, France
- INSERM U861, I-Stem, Corbeil-Essonnes, France
- UEVE U861, I-Stem, Corbeil-Essonnes, France
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Zhong L, Liu H, Zhang H, Zhang W, Li M, Huang Y, Yao J, Huang X, Geng Y, Chen D, Ouyang P, Yang S, Luo W, Yin L. High Starch in Diet Leads to Disruption of Hepatic Glycogen Metabolism and Liver Fibrosis in Largemouth Bass (Micropterus salmoides), Which is Mediated by the PI3K/Akt Signaling Pathway. Front Physiol 2022; 13:880513. [PMID: 35677086 PMCID: PMC9168315 DOI: 10.3389/fphys.2022.880513] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/05/2022] [Indexed: 11/29/2022] Open
Abstract
Due to its special flavour and cheapness, starch is a source of nutrition for humans and most animals, some of whom even prefer to consume large amounts of starchy foods. However, the use of starch by carnivorous fish is limited and excessive starch intake can lead to liver damage, but the mechanism of damage is not clear. Therefore, in this study, two isonitrogenous and isolipid semi-pure diets, Z diet (0% starch) and G diet (22% starch), were formulated, respectively. The largemouth bass (M. salmoides) cultured in fiberglass tanks were randomly divided into two groups and fed the two diets for 45 days. Blood and liver were collected on day 30 and 45 for enzymology, histopathology, ultramicropathology, flow cytometry, and transcriptomics to investigate the damage of high starch on the liver of largemouth bass and its damage mechanism. The results showed that the high starch not affect the growth performance of largemouth bass. However, high starch caused a whitening of the liver and an increase in hepatopancreas index (HSI), aspartate aminotransferase (AST), and alanine aminotransferase (ALT) in the serum. Histopathological observations showed that high starch led to severe vacuolisation, congestion, and moderate to severe necrotizing hepatitis in the liver. The high starch intake led to a significant increase in postprandial blood glucose and insulin in serum of largemouth bass, promoting the synthesis and accumulation of large amounts of hepatic glycogen in the liver, leading to the loss of hepatocyte organelles and inducing liver fibrosis. Meanwhile, high starch induced the production of oxidative stress and promoted apoptosis and necrosis of hepatocytes. Transcriptome analysis revealed that there were 10,927 and 2,656 unique genes in the G and Z groups, respectively. KEGG enrichment analysis showed that 19 pathways were significantly enriched, including those related to glucose metabolism and cell survival. Network mapping based on enrichment pathways and differential expressing genes showed the emergence of a regulatory network dominated by PI3K/Akt signaling pathway. This indicated that the PI3K/Akt signalling pathway plays a very important role in this process, regulating the liver injury caused by high starch. Our results provide a reference for the mechanism of liver injury caused by high starch, and the PI3K/Akt signalling pathway could be a potential therapeutic target for liver injury caused by high starch.
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Affiliation(s)
- Liang Zhong
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Hongli Liu
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Haiqi Zhang
- Zhejiang Institute of Freshwater Fisheries, Hangzhou, China
| | - Weidong Zhang
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Minghao Li
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Ya Huang
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Jiayun Yao
- Zhejiang Institute of Freshwater Fisheries, Hangzhou, China
- *Correspondence: Jiayun Yao, ; Xiaoli Huang,
| | - Xiaoli Huang
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
- *Correspondence: Jiayun Yao, ; Xiaoli Huang,
| | - Yi Geng
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chendu, China
| | - Defang Chen
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Ping Ouyang
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chendu, China
| | - Shiyong Yang
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Wei Luo
- Department of Aquaculture, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Lizi Yin
- Department of Basic Veterinary, College of Veterinary Medicine, Sichuan Agricultural University, Chendu, China
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Hijazi G, Paschall A, Young SP, Smith B, Case LE, Boggs T, Amarasekara S, Austin SL, Pendyal S, El-Gharbawy A, Deak KL, Muir AJ, Kishnani PS. A retrospective longitudinal study and comprehensive review of adult patients with glycogen storage disease type III. Mol Genet Metab Rep 2021; 29:100821. [PMID: 34820282 PMCID: PMC8600151 DOI: 10.1016/j.ymgmr.2021.100821] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 11/09/2021] [Indexed: 12/03/2022] Open
Abstract
INTRODUCTION A deficiency of glycogen debrancher enzyme in patients with glycogen storage disease type III (GSD III) manifests with hepatic, cardiac, and muscle involvement in the most common subtype (type a), or with only hepatic involvement in patients with GSD IIIb. OBJECTIVE AND METHODS To describe longitudinal biochemical, radiological, muscle strength and ambulation, liver histopathological findings, and clinical outcomes in adults (≥18 years) with glycogen storage disease type III, by a retrospective review of medical records. RESULTS Twenty-one adults with GSD IIIa (14 F & 7 M) and four with GSD IIIb (1 F & 3 M) were included in this natural history study. At the most recent visit, the median (range) age and follow-up time were 36 (19-68) and 16 years (0-41), respectively. For the entire cohort: 40% had documented hypoglycemic episodes in adulthood; hepatomegaly and cirrhosis were the most common radiological findings; and 28% developed decompensated liver disease and portal hypertension, the latter being more prevalent in older patients. In the GSD IIIa group, muscle weakness was a major feature, noted in 89% of the GSD IIIa cohort, a third of whom depended on a wheelchair or an assistive walking device. Older individuals tended to show more severe muscle weakness and mobility limitations, compared with younger adults. Asymptomatic left ventricular hypertrophy (LVH) was the most common cardiac manifestation, present in 43%. Symptomatic cardiomyopathy and reduced ejection fraction was evident in 10%. Finally, a urinary biomarker of glycogen storage (Glc4) was significantly associated with AST, ALT and CK. CONCLUSION GSD III is a multisystem disorder in which a multidisciplinary approach with regular clinical, biochemical, radiological and functional (physical therapy assessment) follow-up is required. Despite dietary modification, hepatic and myopathic disease progression is evident in adults, with muscle weakness as the major cause of morbidity. Consequently, definitive therapies that address the underlying cause of the disease to correct both liver and muscle are needed.
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Key Words
- AFP, Alpha-fetoprotein
- ALT, Alanine aminotransferase
- AST, Aspartate aminotransferase
- BG, Blood glucose
- BMI, Body mass index
- CEA, Carcinoembryonic antigen
- CPK, Creatine phosphokinase
- CT scan, Computerized tomography scan
- Cardiomyopathy
- Cirrhosis
- DM, Diabetes mellitus
- GDE, Glycogen debrancher enzyme
- GGT, Gamma glutamyl transferase
- GSD, Glycogen storage disease
- Glc4, Glucose tetrasaccharide
- Glycogen storage disease type III (GSD III)
- HDL, High density lipoprotein
- Hypoglycemia
- LDL, Low density lipoproteins
- LT, liver transplantation.
- Left ventricular hypertrophy (LVH)
- MRI, Magnetic resonance imaging
- TGs, Triglycerides
- US, Ultrasound
- and myopathy
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Affiliation(s)
- Ghada Hijazi
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Anna Paschall
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Sarah P. Young
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Brian Smith
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Laura E. Case
- Doctor of Physical Therapy Division, Department of Orthopedic Surgery, Duke University School of Medicine, Durham, NC, USA
| | - Tracy Boggs
- Duke University Health System, Department of Physical Therapy and Occupational Therapy, USA
| | | | - Stephanie L. Austin
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Surekha Pendyal
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Areeg El-Gharbawy
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | | | - Andrew J. Muir
- Division of Gastroenterology, Duke University School of Medicine, Durham, NC, USA
| | - Priya S. Kishnani
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
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Almodóvar-Payá A, Villarreal-Salazar M, de Luna N, Nogales-Gadea G, Real-Martínez A, Andreu AL, Martín MA, Arenas J, Lucia A, Vissing J, Krag T, Pinós T. Preclinical Research in Glycogen Storage Diseases: A Comprehensive Review of Current Animal Models. Int J Mol Sci 2020; 21:ijms21249621. [PMID: 33348688 PMCID: PMC7766110 DOI: 10.3390/ijms21249621] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/11/2020] [Accepted: 12/15/2020] [Indexed: 12/19/2022] Open
Abstract
GSD are a group of disorders characterized by a defect in gene expression of specific enzymes involved in glycogen breakdown or synthesis, commonly resulting in the accumulation of glycogen in various tissues (primarily the liver and skeletal muscle). Several different GSD animal models have been found to naturally present spontaneous mutations and others have been developed and characterized in order to further understand the physiopathology of these diseases and as a useful tool to evaluate potential therapeutic strategies. In the present work we have reviewed a total of 42 different animal models of GSD, including 26 genetically modified mouse models, 15 naturally occurring models (encompassing quails, cats, dogs, sheep, cattle and horses), and one genetically modified zebrafish model. To our knowledge, this is the most complete list of GSD animal models ever reviewed. Importantly, when all these animal models are analyzed together, we can observe some common traits, as well as model specific differences, that would be overlooked if each model was only studied in the context of a given GSD.
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Affiliation(s)
- Aitana Almodóvar-Payá
- Mitochondrial and Neuromuscular Disorders Unit, Vall d’Hebron Institut de Recerca, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain; (A.A.-P.); (M.V.-S.); (A.R.-M.)
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain; (N.d.L.); (G.N.-G.); (M.A.M.); (J.A.)
| | - Mónica Villarreal-Salazar
- Mitochondrial and Neuromuscular Disorders Unit, Vall d’Hebron Institut de Recerca, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain; (A.A.-P.); (M.V.-S.); (A.R.-M.)
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain; (N.d.L.); (G.N.-G.); (M.A.M.); (J.A.)
| | - Noemí de Luna
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain; (N.d.L.); (G.N.-G.); (M.A.M.); (J.A.)
- Laboratori de Malalties Neuromusculars, Institut de Recerca Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, 08041 Barcelona, Spain
| | - Gisela Nogales-Gadea
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain; (N.d.L.); (G.N.-G.); (M.A.M.); (J.A.)
- Grup de Recerca en Malalties Neuromusculars i Neuropediàtriques, Department of Neurosciences, Institut d’Investigacio en Ciencies de la Salut Germans Trias i Pujol i Campus Can Ruti, Universitat Autònoma de Barcelona, 08916 Badalona, Spain
| | - Alberto Real-Martínez
- Mitochondrial and Neuromuscular Disorders Unit, Vall d’Hebron Institut de Recerca, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain; (A.A.-P.); (M.V.-S.); (A.R.-M.)
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain; (N.d.L.); (G.N.-G.); (M.A.M.); (J.A.)
| | - Antoni L. Andreu
- EATRIS, European Infrastructure for Translational Medicine, 1081 HZ Amsterdam, The Netherlands;
| | - Miguel Angel Martín
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain; (N.d.L.); (G.N.-G.); (M.A.M.); (J.A.)
- Mitochondrial and Neuromuscular Diseases Laboratory, 12 de Octubre Hospital Research Institute (i+12), 28041 Madrid, Spain
| | - Joaquin Arenas
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain; (N.d.L.); (G.N.-G.); (M.A.M.); (J.A.)
- Mitochondrial and Neuromuscular Diseases Laboratory, 12 de Octubre Hospital Research Institute (i+12), 28041 Madrid, Spain
| | - Alejandro Lucia
- Faculty of Sport Sciences, European University, 28670 Madrid, Spain;
| | - John Vissing
- Copenhagen Neuromuscular Center, Department of Neurology, Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen, Denmark; (J.V.); (T.K.)
| | - Thomas Krag
- Copenhagen Neuromuscular Center, Department of Neurology, Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen, Denmark; (J.V.); (T.K.)
| | - Tomàs Pinós
- Mitochondrial and Neuromuscular Disorders Unit, Vall d’Hebron Institut de Recerca, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain; (A.A.-P.); (M.V.-S.); (A.R.-M.)
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), 28029 Madrid, Spain; (N.d.L.); (G.N.-G.); (M.A.M.); (J.A.)
- Correspondence: ; Tel.: +34-934894057
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Metzendorf C, Wineberger K, Rausch J, Cigliano A, Peters K, Sun B, Mennerich D, Kietzmann T, Calvisi DF, Dombrowski F, Ribback S. Transcriptomic and Proteomic Analysis of Clear Cell Foci (CCF) in the Human Non-Cirrhotic Liver Identifies Several Differentially Expressed Genes and Proteins with Functions in Cancer Cell Biology and Glycogen Metabolism. Molecules 2020; 25:molecules25184141. [PMID: 32927708 PMCID: PMC7570661 DOI: 10.3390/molecules25184141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/06/2020] [Accepted: 09/07/2020] [Indexed: 01/06/2023] Open
Abstract
Clear cell foci (CCF) of the liver are considered to be pre-neoplastic lesions of hepatocellular adenomas and carcinomas. They are hallmarked by glycogen overload and activation of AKT (v-akt murine thymoma viral oncogene homolog)/mTOR (mammalian target of rapamycin)-signaling. Here, we report the transcriptome and proteome of CCF extracted from human liver biopsies by laser capture microdissection. We found 14 genes and 22 proteins differentially expressed in CCF and the majority of these were expressed at lower levels in CCF. Using immunohistochemistry, the reduced expressions of STBD1 (starch-binding domain-containing protein 1), USP28 (ubiquitin-specific peptidase 28), monad/WDR92 (WD repeat domain 92), CYB5B (Cytochrome b5 type B), and HSPE1 (10 kDa heat shock protein, mitochondrial) were validated in CCF in independent specimens. Knockout of Stbd1, the gene coding for Starch-binding domain-containing protein 1, in mice did not have a significant effect on liver glycogen levels, indicating that additional factors are required for glycogen overload in CCF. Usp28 knockout mice did not show changes in glycogen storage in diethylnitrosamine-induced liver carcinoma, demonstrating that CCF are distinct from this type of cancer model, despite the decreased USP28 expression. Moreover, our data indicates that decreased USP28 expression is a novel factor contributing to the pre-neoplastic character of CCF. In summary, our work identifies several novel and unexpected candidates that are differentially expressed in CCF and that have functions in glycogen metabolism and tumorigenesis.
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Affiliation(s)
- Christoph Metzendorf
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Katharina Wineberger
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Jenny Rausch
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Antonio Cigliano
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Kristin Peters
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Baodong Sun
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC 27710, USA;
| | - Daniela Mennerich
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90570 Oulu, Finland; (D.M.); (T.K.)
- Biocenter Oulu, University of Oulu, 90570 Oulu, Finland
| | - Thomas Kietzmann
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90570 Oulu, Finland; (D.M.); (T.K.)
- Biocenter Oulu, University of Oulu, 90570 Oulu, Finland
| | - Diego F. Calvisi
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Frank Dombrowski
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Silvia Ribback
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
- Correspondence: ; Tel.: +49-383-486-5732; Fax: +49-383-486-5778
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Du C, Wei H, Zhang M, Hu M, Li Z, Zhang C, Luo X, Liang Y. Genetic analysis and long-term treatment monitoring of 11 children with glycogen storage disease type IIIa. J Pediatr Endocrinol Metab 2020; 33:923-930. [PMID: 32623374 DOI: 10.1515/jpem-2019-0453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 03/16/2020] [Indexed: 11/15/2022]
Abstract
Objectives To investigate the clinical and genetic characteristics of children with glycogen storage disease type IIIa (GSD IIIa) and to explore the muscle involvement and manifestations of GSD IIIa patients. Methods The clinical data of 11 patients with GSD IIIa diagnosed by genetic testing from 2003 to 2019 were retrospectively analyzed. Results Twenty variants of AGL gene were detected in 11 patients, eight of which were novel variants. Before treatment, the height was significantly backward. All patients had hepatomegaly. Abnormal biochemical indicators were mainly manifested as significantly increased serum liver and muscle enzymes, accompanied by hypertriglyceridemia, hypoglycemia, hyperlactacidemia, slightly elevated pyruvic acid, and metabolic acidosis. After treatment, the height and liver size of the patients were significantly improved. At the same time, alanine aminotransferase (ALT), aspartate aminotransferase (AST), triglyceride (TG), lactic acid and pyruvic acid in children were significantly decreased, while creatine kinase (CK) was significantly increased. During follow-up monitoring, six patients developed ventricular hypertrophy. Lactate dehydrogenase (LDH) (691.67 ± 545.27 vs. 362.20 ± 98.66), lactic acid (3.18 ± 3.05 vs. 1.10 ± 0.40), and pyruvic acid (64.30 ± 39.69 vs. 32.06 ± 4.61) were significantly increased in patients with ventricular hypertrophy compared with those without ventricular hypertrophy. Conclusions In clinical cases of upper respiratory tract infection or gastrointestinal symptoms accompanied by hypoglycemia, dyslipidemia, metabolites disorders, elevated serum liver, and muscle enzymes, the possibility of GSD IIIa should be vigilant. During treatment monitoring, if lactic acid, pyruvic acid, LDH, and CK rise, it indicates that the disease is not well controlled and there is the possibility of cardiac hypertrophy.
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Affiliation(s)
- Caiqi Du
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hong Wei
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Min Zhang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Minghui Hu
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhuoguang Li
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Cai Zhang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoping Luo
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yan Liang
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030,China
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Lim JA, Choi SJ, Gao F, Kishnani PS, Sun B. A Novel Gene Therapy Approach for GSD III Using an AAV Vector Encoding a Bacterial Glycogen Debranching Enzyme. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2020; 18:240-249. [PMID: 32637453 PMCID: PMC7327847 DOI: 10.1016/j.omtm.2020.05.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 05/27/2020] [Indexed: 12/25/2022]
Abstract
Glycogen storage disease type III (GSD III) is an inherited disorder caused by a deficiency of glycogen debranching enzyme (GDE), which results in the accumulation of abnormal glycogen (limit dextrin) in the cytoplasm of liver, heart, and skeletal muscle cells. Currently, there is no curative treatment for this disease. Gene therapy with adeno-associated virus (AAV) provides an optimal treatment approach for monogenic diseases like GSD III. However, the 4.6 kb human GDE cDNA is too large to be packaged into a single AAV vector due to its small carrying capacity. To overcome this limitation, we tested a new gene therapy approach in GSD IIIa mice using an AAV vector ubiquitously expressing a smaller bacterial GDE, Pullulanase, whose cDNA is 2.2 kb. Intravenous injection of the AAV vector (AAV9-CB-Pull) into 2-week-old GSD IIIa mice blocked glycogen accumulation in both cardiac and skeletal muscles, but not in the liver, accompanied by the improvement of muscle functions. Subsequent treatment with a liver-restricted AAV vector (AAV8-LSP-Pull) reduced liver glycogen content by 75% and reversed hepatic fibrosis while maintaining the effect of AAV9-CB-Pull treatment on heart and skeletal muscle. Our results suggest that AAV-mediated gene therapy with Pullulanase is a possible treatment for GSD III.
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Affiliation(s)
- Jeong-A Lim
- Division of Medical Genetics, Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Su Jin Choi
- Division of Medical Genetics, Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Fengqin Gao
- Division of Medical Genetics, Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Priya S Kishnani
- Division of Medical Genetics, Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Baodong Sun
- Division of Medical Genetics, Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
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8
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Barthélémy I, Hitte C, Tiret L. The Dog Model in the Spotlight: Legacy of a Trustful Cooperation. J Neuromuscul Dis 2020; 6:421-451. [PMID: 31450509 PMCID: PMC6918919 DOI: 10.3233/jnd-190394] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Dogs have long been used as a biomedical model system and in particular as a preclinical proof of concept for innovative therapies before translation to humans. A recent example of the utility of this animal model is the promising myotubularin gene delivery in boys affected by X-linked centronuclear myopathy after successful systemic, long-term efficient gene therapy in Labrador retrievers. Mostly, this is due to unique features that make dogs an optimal system. The continuous emergence of spontaneous inherited disorders enables the identification of reliable complementary molecular models for human neuromuscular disorders (NMDs). Dogs’ characteristics including size, lifespan and unprecedented medical care level allow a comprehensive longitudinal description of diseases. Moreover, the highly similar pathogenic mechanisms with human patients yield to translational robustness. Finally, interindividual phenotypic heterogeneity between dogs helps identifying modifiers and anticipates precision medicine issues. This review article summarizes the present list of molecularly characterized dog models for NMDs and provides an exhaustive list of the clinical and paraclinical assays that have been developed. This toolbox offers scientists a sensitive and reliable system to thoroughly evaluate neuromuscular function, as well as efficiency and safety of innovative therapies targeting these NMDs. This review also contextualizes the model by highlighting its unique genetic value, shaped by the long-term coevolution of humans and domesticated dogs. Because the dog is one of the most protected research animal models, there is considerable opposition to include it in preclinical projects, posing a threat to the use of this model. We thus discuss ethical issues, emphasizing that unlike many other models, the dog also benefits from its contribution to comparative biomedical research with a drastic reduction in the prevalence of morbid alleles in the breeding stock and an improvement in medical care.
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Affiliation(s)
- Inès Barthélémy
- U955 - IMRB, Team 10 - Biology of the neuromuscular system, Inserm, UPEC, EFS, École nationale vétérinaire d'Alfort, Maisons-Alfort, France
| | - Christophe Hitte
- CNRS, University of Rennes 1, UMR 6290, IGDR, Faculty of Medicine, SFR Biosit, Rennes, France
| | - Laurent Tiret
- U955 - IMRB, Team 10 - Biology of the neuromuscular system, Inserm, UPEC, EFS, École nationale vétérinaire d'Alfort, Maisons-Alfort, France
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9
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Cruces-Sande M, Arcones AC, Vila-Bedmar R, Val-Blasco A, Sharabi K, Díaz-Rodríguez D, Puigserver P, Mayor F, Murga C. Autophagy mediates hepatic GRK2 degradation to facilitate glucagon-induced metabolic adaptation to fasting. FASEB J 2019; 34:399-409. [PMID: 31914606 DOI: 10.1096/fj.201901444r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 10/07/2019] [Accepted: 10/21/2019] [Indexed: 12/13/2022]
Abstract
The liver plays a key role during fasting to maintain energy homeostasis and euglycemia via metabolic processes mainly orchestrated by the insulin/glucagon ratio. We report here that fasting or calorie restriction protocols in C57BL6 mice promote a marked decrease in the hepatic protein levels of G protein-coupled receptor kinase 2 (GRK2), an important negative modulator of both G protein-coupled receptors (GPCRs) and insulin signaling. Such downregulation of GRK2 levels is liver-specific and can be rapidly reversed by refeeding. We find that autophagy, and not the proteasome, represents the main mechanism implicated in fasting-induced GRK2 degradation in the liver in vivo. Reducing GRK2 levels in murine primary hepatocytes facilitates glucagon-induced glucose production and enhances the expression of the key gluconeogenic enzyme Pck1. Conversely, preventing full downregulation of hepatic GRK2 during fasting using adenovirus-driven overexpression of this kinase in the liver leads to glycogen accumulation, decreased glycemia, and hampered glucagon-induced gluconeogenesis, thus preventing a proper and complete adaptation to nutrient deprivation. Overall, our data indicate that physiological fasting-induced downregulation of GRK2 in the liver is key for allowing complete glucagon-mediated responses and efficient metabolic adaptation to fasting in vivo.
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Affiliation(s)
- Marta Cruces-Sande
- Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain.,Instituto de Investigación Sanitaria La Princesa, Madrid, Spain.,CIBER de Enfermedades Cardiovasculares (CIBERCV), ISCIII, Madrid, Spain
| | - Alba C Arcones
- Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain.,Instituto de Investigación Sanitaria La Princesa, Madrid, Spain.,CIBER de Enfermedades Cardiovasculares (CIBERCV), ISCIII, Madrid, Spain
| | - Rocío Vila-Bedmar
- Departamento de ciencias básicas de la salud, área de Bioquímica y Biología Molecular, URJC, Madrid, Spain
| | - Almudena Val-Blasco
- Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain.,Instituto de Investigación Sanitaria La Princesa, Madrid, Spain.,CIBER de Enfermedades Cardiovasculares (CIBERCV), ISCIII, Madrid, Spain
| | - Kfir Sharabi
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Daniel Díaz-Rodríguez
- Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain
| | - Pere Puigserver
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA.,Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Federico Mayor
- Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain.,Instituto de Investigación Sanitaria La Princesa, Madrid, Spain.,CIBER de Enfermedades Cardiovasculares (CIBERCV), ISCIII, Madrid, Spain
| | - Cristina Murga
- Departamento de Biología Molecular, Centro de Biología Molecular Severo Ochoa (UAM-CSIC), Madrid, Spain.,Instituto de Investigación Sanitaria La Princesa, Madrid, Spain.,CIBER de Enfermedades Cardiovasculares (CIBERCV), ISCIII, Madrid, Spain
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10
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Jauze L, Monteillet L, Mithieux G, Rajas F, Ronzitti G. Challenges of Gene Therapy for the Treatment of Glycogen Storage Diseases Type I and Type III. Hum Gene Ther 2019; 30:1263-1273. [PMID: 31319709 DOI: 10.1089/hum.2019.102] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Glycogen storage diseases (GSDs) type I (GSDI) and type III (GSDIII), the most frequent hepatic GSDs, are due to defects in glycogen metabolism, mainly in the liver. In addition to hypoglycemia and liver pathology, renal, myeloid, or muscle complications affect GSDI and GSDIII patients. Currently, patient management is based on dietary treatment preventing severe hypoglycemia and increasing the lifespan of patients. However, most of the patients develop long-term pathologies. In the past years, gene therapy for GSDI has generated proof of concept for hepatic GSDs. This resulted in a recent clinical trial of adeno-associated virus (AAV)-based gene replacement for GSDIa. However, the current limitations of AAV-mediated gene transfer still represent a challenge for successful gene therapy in GSDI and GSDIII. Indeed, transgene loss over time was observed in GSDI liver, possibly due to the degeneration of hepatocytes underlying the physiopathology of both GSDI and GSDIII and leading to hepatic tumor development. Moreover, multitissue targeting requires high vector doses to target nonpermissive tissues such as muscle and kidney. Interestingly, recent pharmacological interventions or dietary regimen aiming at the amelioration of the hepatocyte abnormalities before the administration of gene therapy demonstrated improved efficacy in GSDs. In this review, we describe the advances in gene therapy and the limitations to be overcome to achieve efficient and safe gene transfer in GSDs.
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Affiliation(s)
- Louisa Jauze
- INTEGRARE, Genethon, Inserm, Université d'Evry, Université Paris-Saclay, Evry, France.,Institut National de la Santé et de la Recherche Médicale, U1213, Lyon, France.,Université de Lyon, Lyon, France.,Université Lyon I, Villeurbanne, France
| | - Laure Monteillet
- Institut National de la Santé et de la Recherche Médicale, U1213, Lyon, France.,Université de Lyon, Lyon, France.,Université Lyon I, Villeurbanne, France
| | - Gilles Mithieux
- Institut National de la Santé et de la Recherche Médicale, U1213, Lyon, France.,Université de Lyon, Lyon, France.,Université Lyon I, Villeurbanne, France
| | - Fabienne Rajas
- Institut National de la Santé et de la Recherche Médicale, U1213, Lyon, France.,Université de Lyon, Lyon, France.,Université Lyon I, Villeurbanne, France
| | - Giuseppe Ronzitti
- INTEGRARE, Genethon, Inserm, Université d'Evry, Université Paris-Saclay, Evry, France
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11
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Halaby CA, Young SP, Austin S, Stefanescu E, Bali D, Clinton LK, Smith B, Pendyal S, Upadia J, Schooler GR, Mavis AM, Kishnani PS. Liver fibrosis during clinical ascertainment of glycogen storage disease type III: a need for improved and systematic monitoring. Genet Med 2019; 21:2686-2694. [PMID: 31263214 DOI: 10.1038/s41436-019-0561-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 05/21/2019] [Indexed: 02/07/2023] Open
Abstract
PURPOSE In glycogen storage disease type III (GSD III), liver aminotransferases tend to normalize with age giving an impression that hepatic manifestations improve with age. However, despite dietary treatment, long-term liver complications emerge. We present a GSD III liver natural history study in children to better understand changes in hepatic parameters with age. METHODS We reviewed clinical, biochemical, histological, and radiological data in pediatric patients with GSD III, and performed a literature review of GSD III hepatic findings. RESULTS Twenty-six patients (median age 12.5 years, range 2-22) with GSD IIIa (n = 23) and IIIb (n = 3) were enrolled in the study. Six of seven pediatric patients showed severe fibrosis on liver biopsy (median [range] age: 1.25 [0.75-7] years). Markers of liver injury (aminotransferases), dysfunction (cholesterol, triglycerides), and glycogen storage (glucose tetrasaccharide, Glc4) were elevated at an early age, and decreased significantly thereafter (p < 0.001). Creatine phosphokinase was also elevated with no significant correlation with age (p = 0.4). CONCLUSION Liver fibrosis can occur at an early age, and may explain the decrease in aminotransferases and Glc4 with age. Our data outlines the need for systematic follow-up and specific biochemical and radiological tools to monitor the silent course of the liver disease process.
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Affiliation(s)
- Carine A Halaby
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Sarah P Young
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Stephanie Austin
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Ela Stefanescu
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Deeksha Bali
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Lani K Clinton
- Department of Pathology, Duke University Medical Center, Durham, NC, USA
| | - Brian Smith
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Surekha Pendyal
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Jariya Upadia
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Gary R Schooler
- Department of Radiology, Duke University Medical Center, Durham, NC, USA
| | - Alisha M Mavis
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Priya S Kishnani
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA.
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12
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Hepatic Manifestations in Glycogen Storage Disease Type III. CURRENT PATHOBIOLOGY REPORTS 2018. [DOI: 10.1007/s40139-018-0182-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Antibody-mediated enzyme replacement therapy targeting both lysosomal and cytoplasmic glycogen in Pompe disease. J Mol Med (Berl) 2017; 95:513-521. [DOI: 10.1007/s00109-017-1505-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/13/2016] [Accepted: 01/02/2017] [Indexed: 11/28/2022]
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14
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Yi H, Zhang Q, Brooks ED, Yang C, Thurberg BL, Kishnani PS, Sun B. Systemic Correction of Murine Glycogen Storage Disease Type IV by an AAV-Mediated Gene Therapy. Hum Gene Ther 2016; 28:286-294. [PMID: 27832700 DOI: 10.1089/hum.2016.099] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Deficiency of glycogen branching enzyme (GBE) causes glycogen storage disease type IV (GSD IV), which is characterized by the accumulation of a less branched, poorly soluble form of glycogen called polyglucosan (PG) in multiple tissues. This study evaluates the efficacy of gene therapy with an adeno-associated viral (AAV) vector in a mouse model of adult form of GSD IV (Gbe1ys/ys). An AAV serotype 9 (AAV9) vector containing a human GBE expression cassette (AAV-GBE) was intravenously injected into 14-day-old Gbe1ys/ys mice at a dose of 5 × 1011 vector genomes per mouse. Mice were euthanized at 3 and 9 months of age. In the AAV-treated mice at 3 months of age, GBE enzyme activity was highly elevated in heart, which is consistent with the high copy number of the viral vector genome detected. GBE activity also increased significantly in skeletal muscles and the brain, but not in the liver. The glycogen content was reduced to wild-type levels in muscles and significantly reduced in the liver and brain. At 9 months of age, though GBE activity was only significantly elevated in the heart, glycogen levels were significantly reduced in the liver, brain, and skeletal muscles of the AAV-treated mice. In addition, the AAV treatment resulted in an overall decrease in plasma activities of alanine transaminase, aspartate transaminase, and creatine kinase, and a significant increase in fasting plasma glucose concentration at 9 months of age. This suggests an alleviation of damage and improvement of function in the liver and muscles by the AAV treatment. This study demonstrated a long-term benefit of a systemic injection of an AAV-GBE vector in Gbe1ys/ys mice.
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Affiliation(s)
- Haiqing Yi
- 1 Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center , Durham, North Carolina
| | - Quan Zhang
- 1 Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center , Durham, North Carolina
| | - Elizabeth D Brooks
- 1 Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center , Durham, North Carolina
| | - Chunyu Yang
- 1 Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center , Durham, North Carolina
| | - Beth L Thurberg
- 2 Department of Pathology, Sanofi Genzyme , Framingham, Massachusetts
| | - Priya S Kishnani
- 1 Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center , Durham, North Carolina
| | - Baodong Sun
- 1 Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center , Durham, North Carolina
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15
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García-Alonso G, Monroy-Noyola A, Contreras-Arellano A, Mariscal-Durand JF, Gálvez-Molina Y, Vázquez-Velázquez A, García-Jimenez S, Nuñez P, Cardoso-Taketa A, Villarreal ML. Preclinical evaluation of anti-Helicobacter spp. activity of Hippocratea celastroides Kunth and its acute and sub-acute toxicity. Altern Ther Health Med 2016; 16:445. [PMID: 27825331 PMCID: PMC5101718 DOI: 10.1186/s12906-016-1412-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 10/21/2016] [Indexed: 12/22/2022]
Abstract
Background Hippocratea celastroides Kunth, commonly known as “cancerina”, is used in Mexican Traditional Medicine for the treatment of gastric and intestinal infections, systemic and skin inflammation, injuries and gastritis. The aim of this research was to assess the anti-Helicobacter pylori activities of hydro-ethanolic root-bark extracts from Hippocratea celastroides Kunth in naturally infected dogs, after testing their acute and subacute toxicities in mice. Methods To determine in vivo acute toxicity, a hydro-ethanolic extract was obtained and administered orally in female and male Balb-C mice, at doses ranging from 2000 to 5000 mg/kg. For the subacute study, a hydro-ethanolic extract was given to male and female Balb-C mice at doses ranging from 200 to 2000 mg/kg body weight. The animals were observed daily over a period of 42 days for signs of toxicity. In the pre-clinical anti-Helicobacter spp. assay, 60 dogs were included. Eighteen and 19 dogs for the experimental and control groups respectively, concluded the study. The experimental treatment consisted of H. celastroides hydro-ethanolic extract and the control treatment of amoxicillin-clarithromycin-omeprazole. Results Oral LD50 (lethal dose 50) values for hydro-ethanolic extract were indeterminable at the highest tested doses. Under the subacute administration, neither mortality nor any sign of toxicity were observed when the hydro-ethanolic extract was administered. There were no significant alterations in biochemical parameters. The prevalence of Helicobacter spp. infection in dogs was 97.1 % for the experimental group and 100 % for the control group. Effectiveness was of 33.3 and 55 % in the experimental and control group respectively. The oral administration of H. celastroides was well-tolerated and safe. Conclusion The root-bark of H. celastroides produced no signs of toxicity, and manifested pharmacological activity that indicated the possibility of an alternative treatment for H. pylori infection. Effectiveness is still low so it is necessary to continue research. Electronic supplementary material The online version of this article (doi:10.1186/s12906-016-1412-6) contains supplementary material, which is available to authorized users.
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16
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Sun T, Yi H, Yang C, Kishnani PS, Sun B. Starch Binding Domain-containing Protein 1 Plays a Dominant Role in Glycogen Transport to Lysosomes in Liver. J Biol Chem 2016; 291:16479-84. [PMID: 27358407 DOI: 10.1074/jbc.c116.741397] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Indexed: 12/31/2022] Open
Abstract
A small portion of cellular glycogen is transported to and degraded in lysosomes by acid α-glucosidase (GAA) in mammals, but it is unclear why and how glycogen is transported to the lysosomes. Stbd1 has recently been proposed to participate in glycogen trafficking to lysosomes. However, our previous study demonstrated that knockdown of Stbd1 in GAA knock-out mice did not alter lysosomal glycogen storage in skeletal muscles. To further determine whether Stbd1 participates in glycogen transport to lysosomes, we generated GAA/Stbd1 double knock-out mice. In fasted double knock-out mice, glycogen accumulation in skeletal and cardiac muscles was not affected, but glycogen content in liver was reduced by nearly 73% at 3 months of age and by 60% at 13 months as compared with GAA knock-out mice, indicating that the transport of glycogen to lysosomes was suppressed in liver by the loss of Stbd1. Exogenous expression of human Stbd1 in double knock-out mice restored the liver lysosomal glycogen content to the level of GAA knock-out mice, as did a mutant lacking the Atg8 family interacting motif (AIM) and another mutant that contains only the N-terminal 24 hydrophobic segment and the C-terminal starch binding domain (CBM20) interlinked by an HA tag. Our results demonstrate that Stbd1 plays a dominant role in glycogen transport to lysosomes in liver and that the N-terminal transmembrane region and the C-terminal CBM20 domain are critical for this function.
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Affiliation(s)
- Tao Sun
- From the Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, North Carolina 27710
| | - Haiqing Yi
- From the Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, North Carolina 27710
| | - Chunyu Yang
- From the Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, North Carolina 27710
| | - Priya S Kishnani
- From the Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, North Carolina 27710
| | - Baodong Sun
- From the Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, North Carolina 27710
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17
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A Modified Enzymatic Method for Measurement of Glycogen Content in Glycogen Storage Disease Type IV. JIMD Rep 2016; 30:89-94. [PMID: 27344645 DOI: 10.1007/8904_2015_522] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 11/11/2015] [Accepted: 11/16/2015] [Indexed: 12/17/2022] Open
Abstract
Deficiency of glycogen branching enzyme in glycogen storage disease type IV (GSD IV) results in accumulation of less-branched and poorly soluble polysaccharides (polyglucosan bodies) in multiple tissues. Standard enzymatic method, when used to quantify glycogen content in GSD IV tissues, causes significant loss of the polysaccharides during preparation of tissue lysates. We report a modified method including an extra boiling step to dissolve the insoluble glycogen, ultimately preserving the glycogen content in tissue homogenates from GSD IV mice. Muscle tissues from wild-type, GSD II and GSD IV mice and GSD III dogs were homogenized in cold water, and homogenate of each tissue was divided into two parts. One part was immediately clarified by centrifugation at 4°C (STD-prep); the other part was boiled for 5 min then centrifuged (Boil-prep) at room temperature. When glycogen was quantified enzymatically in tissue lysates, no significant differences were found between the STD-prep and the Boil-prep for wild-type, GSD II and GSD III muscles. In contrast, glycogen content for GSD IV muscle in the STD-prep was only 11% of that in the Boil-prep, similar to wild-type values. Similar results were observed in other tissues of GSD IV mice and fibroblast cells from a GSD IV patient. This study provides important information for improving disease diagnosis, monitoring disease progression, and evaluating treatment outcomes in both clinical and preclinical clinical settings for GSD IV. This report should be used as an updated protocol in clinical diagnostic laboratories.
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18
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Sun B, Brooks ED, Koeberl DD. Preclinical Development of New Therapy for Glycogen Storage Diseases. Curr Gene Ther 2016; 15:338-47. [PMID: 26122079 DOI: 10.2174/1566523215666150630132253] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 03/24/2015] [Accepted: 04/01/2015] [Indexed: 02/07/2023]
Abstract
Glycogen storage disease (GSD) consists of more than 10 discrete conditions for which the biochemical and genetic bases have been determined, and new therapies have been under development for several of these conditions. Gene therapy research has generated proof-of-concept for GSD types I (von Gierke disease) and II (Pompe disease). Key features of these gene therapy strategies include the choice of vector and regulatory cassette, and recently adeno-associated virus (AAV) vectors containing tissue-specific promoters have achieved a high degree of efficacy. Efficacy of gene therapy for Pompe disease depend upon the induction of immune tolerance to the therapeutic enzyme. Efficacy of von Gierke disease is transient, waning gradually over the months following vector administration. Small molecule therapies have been evaluated with the goal of improving standard of care therapy or ameliorating the cellular abnormalities associated with specific GSDs. The receptor-mediated uptake of the therapeutic enzyme in Pompe disease was enhanced by administration of β2 agonists. Rapamycin reduced the liver fibrosis observed in GSD III. Further development of gene therapy could provide curative therapy for patients with GSD, if efficacy from preclinical research is observed in future clinical trials and these treatments become clinically available.
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19
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Brooks ED, Yi H, Austin SL, Thurberg BL, Young SP, Fyfe JC, Kishnani PS, Sun B. Natural Progression of Canine Glycogen Storage Disease Type IIIa. Comp Med 2016; 66:41-51. [PMID: 26884409 PMCID: PMC4752035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 07/01/2015] [Accepted: 08/22/2015] [Indexed: 06/05/2023]
Abstract
Glycogen storage disease type IIIa (GSD IIIa) is caused by a deficiency of glycogen debranching enzyme activity. Hepatomegaly, muscle degeneration, and hypoglycemia occur in human patients at an early age. Long-term complications include liver cirrhosis, hepatic adenomas, and generalized myopathy. A naturally occurring canine model of GSD IIIa that mimics the human disease has been described, with progressive liver disease and skeletal muscle damage likely due to excess glycogen deposition. In the current study, long-term follow-up of previously described GSD IIIa dogs until 32 mo of age (n = 4) and of family-owned GSD IIIa dogs until 11 to 12 y of age (n = 2) revealed that elevated concentrations of liver and muscle enzyme (AST, ALT, ALP, and creatine phosphokinase) decreased over time, consistent with hepatic cirrhosis and muscle fibrosis. Glycogen deposition in many skeletal muscles; the tongue, diaphragm, and heart; and the phrenic and sciatic nerves occurred also. Furthermore, the urinary biomarker Glc4, which has been described in many types of GSD, was first elevated and then decreased later in life. This urinary biomarker demonstrated a similar trend as AST and ALT in GSD IIIa dogs, indicating that Glc4 might be a less invasive biomarker of hepatocellular disease. Finally, the current study further demonstrates that the canine GSD IIIa model adheres to the clinical course in human patients with this disorder and is an appropriate model for developing novel therapies.
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Affiliation(s)
- Elizabeth D Brooks
- Division of Medical Genetics and Laboratory Animal Resources, Duke University Medical Center, Durham, North Carolina, USA
| | - Haiqing Yi
- Division of Medical Genetics, Duke University Medical Center, Durham, North Carolina, USA
| | - Stephanie L Austin
- Division of Medical Genetics, Duke University Medical Center, Durham, North Carolina, USA
| | - Beth L Thurberg
- Department of Pathology, Genzyme, a Sanofi Company, Framingham, Massachusetts, USA
| | - Sarah P Young
- Division of Medical Genetics, Duke University Medical Center, Durham, North Carolina, USA
| | - John C Fyfe
- Laboratory of Comparative Medical Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Priya S Kishnani
- Division of Medical Genetics, Duke University Medical Center, Durham, North Carolina, USA
| | - Baodong Sun
- Division of Medical Genetics, Duke University Medical Center, Durham, North Carolina.
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20
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Brooks ED, Koeberl DD. Large animal models and new therapies for glycogen storage disease. J Inherit Metab Dis 2015; 38:505-9. [PMID: 25224826 PMCID: PMC4513910 DOI: 10.1007/s10545-014-9766-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Revised: 08/13/2014] [Accepted: 08/25/2014] [Indexed: 10/24/2022]
Abstract
Glycogen storage diseases (GSD), a unique category of inherited metabolic disorders, were first described early in the twentieth century. Since then, the biochemical and genetic bases of these disorders have been determined, and an increasing number of animal models for GSD have become available. At least seven large mammalian models have been developed for laboratory research on GSDs. These models have facilitated the development of new therapies, including gene therapy, which are undergoing clinical translation. For example, gene therapy prolonged survival and prevented hypoglycemia during fasting for greater than one year in dogs with GSD type Ia, and the need for periodic re-administration to maintain efficacy was demonstrated in that dog model. The further development of gene therapy could provide curative therapy for patients with GSD and other inherited metabolic disorders.
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Affiliation(s)
- Elizabeth D Brooks
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
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21
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Chandramouli C, Varma U, Stevens EM, Xiao RP, Stapleton DI, Mellor KM, Delbridge LMD. Myocardial glycogen dynamics: New perspectives on disease mechanisms. Clin Exp Pharmacol Physiol 2015; 42:415-25. [DOI: 10.1111/1440-1681.12370] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 12/29/2014] [Accepted: 01/06/2015] [Indexed: 11/26/2022]
Affiliation(s)
| | - Upasna Varma
- Department of Physiology; University of Melbourne; Melbourne Vic. Australia
| | - Ellie M Stevens
- Department of Physiology; University of Auckland; Auckland New Zealand
| | - Rui-Ping Xiao
- Institute of Molecular Medicine; Peking University; Beijing China
| | - David I Stapleton
- Department of Physiology; University of Melbourne; Melbourne Vic. Australia
- The Florey Institute of Neuroscience; Melbourne Vic. Australia
| | - Kimberley M Mellor
- Department of Physiology; University of Melbourne; Melbourne Vic. Australia
- Department of Physiology; University of Auckland; Auckland New Zealand
| | - Lea MD Delbridge
- Department of Physiology; University of Melbourne; Melbourne Vic. Australia
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22
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Glycogen storage disease type III: A novel Agl knockout mouse model. Biochim Biophys Acta Mol Basis Dis 2014; 1842:2318-28. [PMID: 25092169 DOI: 10.1016/j.bbadis.2014.07.029] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 07/11/2014] [Accepted: 07/28/2014] [Indexed: 12/29/2022]
Abstract
Glycogen storage disease type III is an autosomal recessive disease characterized by a deficiency in the glycogen debranching enzyme, encoded by AGL. Essential features of this disease are hepatomegaly, hypoglycemia, hyperlipidemia, and growth retardation. Progressive skeletal myopathy, neuropathy, and/or cardiomyopathy become prominent in adults. Currently, there is no available cure. We generated an Agl knockout mouse model by deletion of the carboxy terminus of the protein, including the carboxy end of the glucosidase domain and the glycogen-binding domain. Agl knockout mice presented serious hepatomegaly, but we did not observe signs of cirrhosis or adenomas. In affected tissues, glycogen storage was higher than in wild-type mice, even in the central nervous system which has never been tested in GSDIII patients. The biochemical findings were in accordance with histological data, which clearly documented tissue impairment due to glycogen accumulation. Indeed, electron microscopy revealed the disruption of contractile units due to glycogen infiltrations. Furthermore, adult Agl knockout animals appeared less prompt to move, and they exhibited kyphosis. Three-mo-old Agl knockout mice could not run, and adult mice showed exercise intolerance. In addition, older affected animals exhibited an accelerated respiratory rate even at basal conditions. This observation was correlated with severe glycogen accumulation in the diaphragm. Diffuse glycogen deposition was observed in the tongues of affected mice. Our results demonstrate that this Agl knockout mouse is a reliable model for human glycogenosis type III, as it recapitulates the essential phenotypic features of the disease.
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23
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Liu KM, Wu JY, Chen YT. Mouse model of glycogen storage disease type III. Mol Genet Metab 2014; 111:467-76. [PMID: 24613482 DOI: 10.1016/j.ymgme.2014.02.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Revised: 02/03/2014] [Accepted: 02/03/2014] [Indexed: 11/18/2022]
Abstract
Glycogen storage disease type IIIa (GSD IIIa) is caused by a deficiency of the glycogen debranching enzyme (GDE), which is encoded by the Agl gene. GDE deficiency leads to the pathogenic accumulation of phosphorylase limit dextrin (PLD), an abnormal glycogen, in the liver, heart, and skeletal muscle. To further investigate the pathological mechanisms behind this disease and develop novel therapies to treat this disease, we generated a GDE-deficient mouse model by removing exons after exon 5 in the Agl gene. GDE reduction was confirmed by western blot and enzymatic activity assay. Histology revealed massive glycogen accumulation in the liver, muscle, and heart of the homozygous affected mice. Interestingly, we did not find any differences in the general appearance, growth rate, and life span between the wild-type, heterozygous, and homozygous affected mice with ad libitum feeding, except reduced motor activity after 50 weeks of age, and muscle weakness in both the forelimb and hind legs of homozygous affected mice by using the grip strength test at 62 weeks of age. However, repeated fasting resulted in decreased survival of the knockout mice. Hepatomegaly and progressive liver fibrosis were also found in the homozygous affected mice. Blood chemistry revealed that alanine transaminase (ALT), aspartate transaminase (AST) and alkaline phosphatase (ALP) activities were significantly higher in the homozygous affected mice than in both wild-type and heterozygous mice and the activity of these enzymes further increased with fasting. Creatine phosphokinase (CPK) activity was normal in young and adult homozygous affected mice. However, the activity was significantly elevated after fasting. Hypoglycemia appeared only at a young age (3 weeks) and hyperlipidemia was not observed in our model. In conclusion, with the exception of normal lipidemia, these mice recapitulate human GSD IIIa; moreover, we found that repeated fasting was detrimental to these mice. This mouse model will be useful for future investigation regarding the pathophysiology and treatment strategy of human GSD III.
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Affiliation(s)
- Kai-Ming Liu
- Institute of Biomedical Sciences, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 115, Taiwan; Institute of Clinical Medicine, National Yang-Ming University, 155, Sec.2, Linong Street, Taipei 112, Taiwan
| | - Jer-Yuarn Wu
- Institute of Biomedical Sciences, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 115, Taiwan
| | - Yuan-Tsong Chen
- Institute of Biomedical Sciences, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 115, Taiwan; Department of Pediatrics, Duke University Medical Center, Box 3528, Durham, NC 27710, USA.
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24
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Correction of glycogen storage disease type III with rapamycin in a canine model. J Mol Med (Berl) 2014; 92:641-50. [PMID: 24509886 DOI: 10.1007/s00109-014-1127-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 12/27/2013] [Accepted: 01/23/2014] [Indexed: 01/09/2023]
Abstract
UNLABELLED Recently, we reported that progression of liver fibrosis and skeletal myopathy caused by extensive accumulation of cytoplasmic glycogen at advanced age is the major feature of a canine model of glycogen storage disease (GSD) IIIa. Here, we aim to investigate whether rapamycin, a specific inhibitor of mTOR, is an effective therapy for GSD III. Our data show that rapamycin significantly reduced glycogen content in primary muscle cells from human patients with GSD IIIa by suppressing the expression of glycogen synthase and glucose transporter 1. To test the treatment efficacy in vivo, rapamycin was daily administered to GSD IIIa dogs starting from age 2 (early-treatment group) or 8 months (late-treatment group), and liver and skeletal muscle biopsies were performed at age 12 and 16 months. In both treatment groups, muscle glycogen accumulation was not affected at age 12 months but significantly inhibited at 16 months. Liver glycogen content was reduced in the early-treatment group but not in the late-treatment group at age 12 months. Both treatments effectively reduced liver fibrosis at age 16 months, consistent with markedly inhibited transition of hepatic stellate cells into myofibroblasts, the central event in the process of liver fibrosis. Our results suggest a potential useful therapy for GSD III. KEY MESSAGES Rapamycin inhibited glycogen accumulation in GSD IIIa patient muscle cells. Rapamycin reduced muscle glycogen content in GSD IIIa dogs at advanced age. Rapamycin effectively prevented progression of liver fibrosis in GSD IIIa dogs. Our results suggest rapamycin as potential useful therapy for patients with GSD III.
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25
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Kim M, Hunter RW, Garcia-Menendez L, Gong G, Yang YY, Kolwicz SC, Xu J, Sakamoto K, Wang W, Tian R. Mutation in the γ2-subunit of AMP-activated protein kinase stimulates cardiomyocyte proliferation and hypertrophy independent of glycogen storage. Circ Res 2014; 114:966-75. [PMID: 24503893 DOI: 10.1161/circresaha.114.302364] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
RATIONALE AMP-activated protein kinase is a master regulator of cell metabolism and an attractive drug target for cancer and metabolic and cardiovascular diseases. Point mutations in the regulatory γ2-subunit of AMP-activated protein kinase (encoded by Prkag2 gene) caused a unique form of human cardiomyopathy characterized by cardiac hypertrophy, ventricular preexcitation, and glycogen storage. Understanding the disease mechanisms of Prkag2 cardiomyopathy is not only beneficial for the patients but also critical to the use of AMP-activated protein kinase as a drug target. OBJECTIVE We sought to identify the pro-growth-signaling pathway(s) triggered by Prkag2 mutation and to distinguish it from the secondary response to glycogen storage. METHODS AND RESULTS In a mouse model of N488I mutation of the Prkag2 gene (R2M), we rescued the glycogen storage phenotype by genetic inhibition of glucose-6-phosphate-stimulated glycogen synthase activity. Ablation of glycogen storage eliminated the ventricular preexcitation but did not affect the excessive cardiac growth in R2M mice. The progrowth effect in R2M hearts was mediated via increased insulin sensitivity and hyperactivity of Akt, resulting in activation of mammalian target of rapamycin and inactivation of forkhead box O transcription factor-signaling pathways. Consequently, cardiac myocyte proliferation during the postnatal period was enhanced in R2M hearts followed by hypertrophic growth in adult hearts. Inhibition of mammalian target of rapamycin activity by rapamycin or restoration of forkhead box O transcription factor activity by overexpressing forkhead box O transcription factor 1 rescued the abnormal cardiac growth. CONCLUSIONS Our study reveals a novel mechanism for Prkag2 cardiomyopathy, independent of glycogen storage. The role of γ2-AMP-activated protein kinase in cell growth also has broad implications in cardiac development, growth, and regeneration.
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MESH Headings
- AMP-Activated Protein Kinases/genetics
- AMP-Activated Protein Kinases/physiology
- Animals
- Cardiomyopathy, Hypertrophic, Familial/enzymology
- Cardiomyopathy, Hypertrophic, Familial/genetics
- Cardiomyopathy, Hypertrophic, Familial/metabolism
- Cardiomyopathy, Hypertrophic, Familial/physiopathology
- Cell Division
- Cell Enlargement
- Disease Models, Animal
- Forkhead Box Protein O1
- Forkhead Transcription Factors/biosynthesis
- Forkhead Transcription Factors/genetics
- Forkhead Transcription Factors/physiology
- Gene Knock-In Techniques
- Genetic Complementation Test
- Glucose-6-Phosphate/metabolism
- Glucose-6-Phosphate/pharmacology
- Glycogen/biosynthesis
- Glycogen Storage Disease/genetics
- Glycogen Storage Disease/metabolism
- Glycogen Storage Disease/physiopathology
- Glycogen Synthase/genetics
- Glycogen Synthase/physiology
- Insulin Resistance/genetics
- Mice
- Myocardium/metabolism
- Myocytes, Cardiac/metabolism
- Myocytes, Cardiac/pathology
- Pre-Excitation Syndromes/genetics
- Proto-Oncogene Proteins c-akt/physiology
- Signal Transduction/genetics
- Signal Transduction/physiology
- Sirolimus/pharmacology
- TOR Serine-Threonine Kinases/physiology
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Affiliation(s)
- Maengjo Kim
- From the Department of Anesthesiology and Pain Medicine, Mitochondria and Metabolism Center, University of Washington, Seattle (M.K., L.G.-M., G.G., Y.-Y.Y., S.C.K., J.X., W.W., R.T.); and MRC Protein Phosphorylation unit, College of Life Sciences, University of Dundee, Dundee, United Kingdom (R.W.H., K.S.). R.W.H. and K.S. are currently affiliated with Nestlé Institute of Health Sciences SA, Campus EPFL, Innovation Park, bâtiment G, Lausanne, Switzerland
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26
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Abstract
Disorders of glycogen metabolism are inborn errors of energy homeostasis affecting primarily skeletal muscle, heart, liver, and, less frequently, the central nervous system. These rare diseases are quite variable in age of onset, symptoms, morbidity, and mortality. This review provides an update on disorders of glycogen metabolism affecting skeletal muscle exclusively or predominantly. From a pathogenetic perspective, we classify these diseases as primary, if the defective enzyme is directly involved in glycogen/glucose metabolism, or secondary, if the genetic mutation affects proteins which indirectly regulate glycogen or glucose processing. In addition to summarizing the most recent clinical reports in this field, we briefly describe animal models of human glycogen disorders. These experimental models are greatly improving the understanding of the pathogenetic mechanisms underlying the muscle degenerative process associated to these diseases and provide in vivo platforms to test new therapeutic strategies.
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27
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Yi H, Fredrickson KB, Das S, Kishnani PS, Sun B. Stbd1 is highly elevated in skeletal muscle of Pompe disease mice but suppression of its expression does not affect lysosomal glycogen accumulation. Mol Genet Metab 2013; 109:312-4. [PMID: 23726947 DOI: 10.1016/j.ymgme.2013.05.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 05/08/2013] [Accepted: 05/09/2013] [Indexed: 11/19/2022]
Abstract
Previous studies strongly suggest that starch binding domain containing protein 1 (Stbd1) plays an important role in intracellular glycogen trafficking into lysosomes. We report here that Stbd1 expression is markedly increased in skeletal muscles but not in heart and liver of GAA-KO mice. An AAV2/9 vector expressing a Stbd1-specific shRNA effectively suppressed Stbd1 expression but did not alter lysosomal glycogen accumulation in the affected tissues of GAA-KO mice. Our results indicate that inhibition of Stbd1 does not appear to be an effective therapeutic approach for Pompe disease.
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Affiliation(s)
- Haiqing Yi
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC 27710, USA
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28
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Sun B, Fredrickson K, Austin S, Tolun AA, Thurberg BL, Kraus WE, Bali D, Chen YT, Kishnani PS. Alglucosidase alfa enzyme replacement therapy as a therapeutic approach for glycogen storage disease type III. Mol Genet Metab 2013; 108:145-7. [PMID: 23318145 DOI: 10.1016/j.ymgme.2012.12.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 12/18/2012] [Accepted: 12/18/2012] [Indexed: 10/27/2022]
Abstract
We investigated the feasibility of using recombinant human acid-α glucosidase (rhGAA, Alglucosidase alfa), an FDA approved therapy for Pompe disease, as a treatment approach for glycogen storage disease type III (GSD III). An in vitro disease model was established by isolating primary myoblasts from skeletal muscle biopsies of patients with GSD IIIa. We demonstrated that rhGAA significantly reduced glycogen levels in the two GSD IIIa patients' muscle cells (by 17% and 48%, respectively) suggesting that rhGAA could be a novel therapy for GSD III. This conclusion needs to be confirmed in other in vivo models.
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Affiliation(s)
- Baodong Sun
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC 27710, USA.
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29
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Horvath JJ, Austin SL, Jones HN, Drake EJ, Case LE, Soher BJ, Bashir MR, Kishnani PS. Bulbar muscle weakness and fatty lingual infiltration in glycogen storage disorder type IIIa. Mol Genet Metab 2012; 107:496-500. [PMID: 23062577 DOI: 10.1016/j.ymgme.2012.09.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 09/22/2012] [Accepted: 09/23/2012] [Indexed: 10/27/2022]
Abstract
Glycogen storage disorder type III (GSD III) is a rare autosomal recessive disorder resulting from a deficiency of glycogen debranching enzyme, critical in cytosolic glycogen degradation. GSD IIIa, the most common form of GSD III, primarily affects the liver, cardiac muscle, and skeletal muscle. Although skeletal muscle weakness occurs commonly in GSD IIIa, bulbar muscle involvement has not been previously reported. Here we present three GSD IIIa patients with clinical evidence of bulbar weakness based on instrumental assessment of lingual strength. Dysarthria and/or dysphagia, generally mild in severity, were evident in all three individuals. One patient also underwent correlative magnetic resonance imaging (MRI) which was remarkable for fatty infiltration at the base of the intrinsic tongue musculature, as well as abnormal expansion of the fibro-fatty lingual septum. Additionally, we provide supportive evidence of diffuse glycogen infiltration of the tongue at necropsy in a naturally occurring canine model of GSD IIIa. While further investigation in a larger group of patients with GSD III is needed to determine the incidence of bulbar muscle involvement in this condition and whether it occurs in GSD IIIb, clinical surveillance of lingual strength is recommended.
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Affiliation(s)
- Jeffrey J Horvath
- Department of Radiology, Duke University Medical Center, DUMC 3808 Durham, NC 27710, USA
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