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Williams AE, Gittis AG, Botello K, Cruz P, Martin-Martin I, Valenzuela Leon PC, Sumner B, Bonilla B, Calvo E. Structural and functional comparisons of salivary α-glucosidases from the mosquito vectors Aedes aegypti, Anopheles gambiae, and Culex quinquefasciatus. Insect Biochem Mol Biol 2024; 167:104097. [PMID: 38428508 PMCID: PMC10955559 DOI: 10.1016/j.ibmb.2024.104097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/26/2024] [Accepted: 02/26/2024] [Indexed: 03/03/2024]
Abstract
Mosquito vectors of medical importance both blood and sugar feed, and their saliva contains bioactive molecules that aid in both processes. Although it has been shown that the salivary glands of several mosquito species exhibit α-glucosidase activities, the specific enzymes responsible for sugar digestion remain understudied. We therefore expressed and purified three recombinant salivary α-glucosidases from the mosquito vectors Aedes aegypti, Anopheles gambiae, and Culex quinquefasciatus and compared their functions and structures. We found that all three enzymes were expressed in the salivary glands of their respective vectors and were secreted into the saliva. The proteins, as well as mosquito salivary gland extracts, exhibited α-glucosidase activity, and the recombinant enzymes displayed preference for sucrose compared to p-nitrophenyl-α-D-glucopyranoside. Finally, we solved the crystal structure of the Ae. aegypti α-glucosidase bound to two calcium ions at a 2.3 Ångstrom resolution. Molecular docking suggested that the Ae. aegypti α-glucosidase preferred di- or polysaccharides compared to monosaccharides, consistent with enzymatic activity assays. Comparing structural models between the three species revealed a high degree of similarity, suggesting similar functional properties. We conclude that the α-glucosidases studied herein are important enzymes for sugar digestion in three mosquito species.
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Affiliation(s)
- Adeline E Williams
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20852, USA
| | - Apostolos G Gittis
- Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Karina Botello
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20852, USA
| | - Phillip Cruz
- Office of Cyber Infrastructure and Computational Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20852, USA
| | - Ines Martin-Martin
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20852, USA
| | - Paola Carolina Valenzuela Leon
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20852, USA
| | - Benjamin Sumner
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20852, USA
| | - Brian Bonilla
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20852, USA
| | - Eric Calvo
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, 20852, USA.
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Alizadeh Y, Saidi H, Saeedi V, Kamalzadeh L. Infantile-onset pompe disease: a case report emphasizing the role of genetic counseling and prenatal testing. BMC Pediatr 2024; 24:194. [PMID: 38500078 PMCID: PMC10946141 DOI: 10.1186/s12887-024-04690-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 03/04/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND Pompe disease, classified as glycogen storage disease type II, arises from a deficiency in the acid alpha-glucosidase (GAA) enzyme, leading to glycogen accumulation in multiple tissues. The unique correlation between genotype and enzyme activity is a key feature. This case highlights an infantile-onset form, emphasizing genetic counseling and prenatal testing importance. CASE PRESENTATION An 18-week-old infant with respiratory distress, cyanosis, and fever was admitted. Born healthy, her sibling died from Pompe disease. She presented with cardiomegaly, hypotonia, and absent reflexes. Diagnosis was confirmed by significantly reduced GAA activity. Despite treatment initiation, the patient succumbed to cardiac arrest. CONCLUSIONS The case underscores genetic counseling's role, offering insights into prenatal testing advancements, antenatal diagnosis through echocardiography, and the significance of early intervention, particularly in infantile-onset Pompe disease. SYNOPSIS Genetic risk assessment and prenatal testing are crucial for families with a history of Pompe disease to improve early diagnosis and management outcomes.
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Affiliation(s)
- Yasaman Alizadeh
- Pediatric Endocrinology and Metabolism Department, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hossein Saidi
- Pediatric Critical Care Unit, Rasool Akram Medical Complex Clinical Research Development Center (RCRDC), School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Vahid Saeedi
- Pediatric Endocrinology and Metabolism Department, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Leila Kamalzadeh
- Department of Psychiatry, Rasool Akram Medical Complex Clinical Research Development Center (RCRDC), School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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3
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Martinez-Marin RJ, Reyes-Leiva D, Nascimento A, Muelas N, Dominguez-González C, Paradas C, Olivé M, García-Romero M, Pascual-Pascual SI, Grau JM, Barba-Romero MA, Gomez-Caravaca MT, de Las Heras J, Casquero P, Mendoza MD, de León JC, Gutierrez A, Morís G, Blanco-Lago R, Ramos-Fransi A, Pintós G, García-Antelo MJ, Rabasa M, Morgado Y, Usón M, Miralles FJ, Bárcena-Llona JE, Gómez-Belda AB, Pedraza-Hueso MI, Hortelano M, Colomé A, Garcia-Martin G, Lopez de Munain A, Jericó I, Galán-Dávila L, Pardo J, Salgueiro-Origlia G, Alonso-Pérez J, Pla-Junca F, Schiava M, Segovia-Simón S, Díaz-Manera J. Description of clinical and genetic features of 122 patients included in the Spanish Pompe registry. Neuromuscul Disord 2024; 34:1-8. [PMID: 38087756 DOI: 10.1016/j.nmd.2023.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/06/2023] [Accepted: 10/08/2023] [Indexed: 12/26/2023]
Abstract
Pompe disease is a rare genetic disorder with an estimated prevalence of 1:60.000. The two main phenotypes are Infantile Onset Pompe Disease (IOPD) and Late Onset Pompe Disease (LOPD). There is no published data from Spain regarding the existing number of cases, regional distribution, clinical features or, access and response to the treatment. We created a registry to collect all these data from patients with Pompe in Spain. Here, we report the data of the 122 patients registered including nine IOPD and 113 LOPD patients. There was a high variability in how the diagnosis was obtained and how the follow-up was performed among different centres. Seven IOPD patients were still alive being all treated with enzymatic replacement therapy (ERT) at last visit. Ninety four of the 113 LOPD patients had muscle weakness of which 81 were receiving ERT. We observed a progressive decline in the results of muscle function tests during follow-up. Overall, the Spanish Pompe Registry is a valuable resource for understanding the demographics, patient's journey and clinical characteristics of patients in Spain. Our data supports the development of agreed guidelines to ensure that the care provided to the patients is standardized across the country.
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Affiliation(s)
- Rafael Jenaro Martinez-Marin
- NeuService, Hospital La Paz Institute for Health Research - IdiPAZ (La Paz University Hospital - Universidad Autónoma de Madrid, Madrid, Spain
| | - David Reyes-Leiva
- Institut de Recerca Biomedica Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; CIBERER, Spain
| | - Andrés Nascimento
- Servicio de Neuropediatría, CIBERER, ERN-NMD, Hospital Sant Joan de Deu, Esplugues de Llobregat, Barcelona, Spain
| | - Nuria Muelas
- CIBERER, Spain; Neurology Service, Hospital La Fe de Valencia, Valencia, Spain
| | - C Dominguez-González
- CIBERER, Spain; Neurology Service, Hospital 12 de Octubre, imas12 Research Institute, ERN-NMD, Madrid, Spain
| | - Carmen Paradas
- Neurology Service, Hospital Virgen del Rocío, Sevilla, Spain
| | - Montse Olivé
- Institut de Recerca Biomedica Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; CIBERER, Spain; Neuromuscular Diseases Unit, Neurology Service, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Mar García-Romero
- Neuropaediatrics Service, Hospital Universitario La Paz, Madrid, Spain
| | | | - Josep Maria Grau
- Internal Medicine Service, Hospital Clínic de Barcelona, Barcelona, Spain
| | | | | | - Javier de Las Heras
- Division of Pediatric Metabolism at Cruces University Hospital, Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), European Reference Network for Hereditary Metabolic Disorders (MetabERN), Biocruces-Bizkaia Health Research Institute and University of the Basque Country (UPV/EHU), Barakaldo, Spain
| | - Pilar Casquero
- Neurology Service, Hospital Mateu Orfila, Menorca, Spain
| | | | - Juan Carlos de León
- Neurology Service, Hospital Universitario Nuestra Señora de la Candelaria, Tenerife, Spain
| | | | - Germán Morís
- Neurology Service, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Raquel Blanco-Lago
- Paediatrics Service, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Alba Ramos-Fransi
- Neurology Service, Hospital Universitario Germans Trias i Pujol, Badalona, Spain
| | - Guillem Pintós
- Internal Medicine Service, Hospital Universitario Vall d'Hebron, Barcelona, Spain
| | | | - Maria Rabasa
- Neurology Service, Hospital Universitario de Fuenlabrada, Madrid, Spain
| | | | - Mercedes Usón
- Neurology Service, Hospital Universitario Son Llatzer, Palma de Mallorca, Spain
| | | | | | | | | | - Miryam Hortelano
- Paediatric Service, Hospital Universitario de Segovia, Segovia Spain
| | - Antoni Colomé
- Internal Medicine Service, Hospital de Terrassa, Barcelona, Spain
| | | | - Adolfo Lopez de Munain
- Neurology Service, Instituto Biodonostia-CIBERNED-EHU-UPV, Hospital Universitario Donostia-OSAKIDETZA, Spain
| | - Ivonne Jericó
- Neurology Service, Complejo Hospitalario de Navarra, Spain
| | - Lucía Galán-Dávila
- Neurology Service, Hospital Universitario Clínico San Carlos, Madrid, Spain
| | - Julio Pardo
- Neurology Service, Hospital Universitario de Santiago de Compostela, Santiago de Compostela. Spain
| | - Giorgina Salgueiro-Origlia
- Internal Medicine Service, Hospital La Paz Institute for Health Research - IdiPAZ (La Paz University Hospital, Universidad Autónoma de Madrid, Spain
| | - Jorge Alonso-Pérez
- Institut de Recerca Biomedica Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; CIBERER, Spain
| | - Francesc Pla-Junca
- Institut de Recerca Biomedica Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; CIBERER, Spain
| | - Marianela Schiava
- John Walton Muscular Distrophy Research Center, Newcastle University, UK
| | - Sonia Segovia-Simón
- Institut de Recerca Biomedica Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; CIBERER, Spain
| | - Jordi Díaz-Manera
- Institut de Recerca Biomedica Hospital de la Santa Creu i Sant Pau, Barcelona, Spain; CIBERER, Spain; John Walton Muscular Distrophy Research Center, Newcastle University, UK.
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Sellier P, Vidal P, Bertin B, Gicquel E, Bertil-Froidevaux E, Georger C, van Wittenberghe L, Miranda A, Daniele N, Richard I, Gross DA, Mingozzi F, Collaud F, Ronzitti G. Muscle-specific, liver-detargeted adeno-associated virus gene therapy rescues Pompe phenotype in adult and neonate Gaa -/- mice. J Inherit Metab Dis 2024; 47:119-134. [PMID: 37204237 DOI: 10.1002/jimd.12625] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 03/17/2023] [Accepted: 05/11/2023] [Indexed: 05/20/2023]
Abstract
Pompe disease (PD) is a neuromuscular disorder caused by acid α-glucosidase (GAA) deficiency. Reduced GAA activity leads to pathological glycogen accumulation in cardiac and skeletal muscles responsible for severe heart impairment, respiratory defects, and muscle weakness. Enzyme replacement therapy with recombinant human GAA (rhGAA) is the standard-of-care treatment for PD, however, its efficacy is limited due to poor uptake in muscle and the development of an immune response. Multiple clinical trials are ongoing in PD with adeno-associated virus (AAV) vectors based on liver- and muscle-targeting. Current gene therapy approaches are limited by liver proliferation, poor muscle targeting, and the potential immune response to the hGAA transgene. To generate a treatment tailored to infantile-onset PD, we took advantage of a novel AAV capsid able to increase skeletal muscle targeting compared to AAV9 while reducing liver overload. When combined with a liver-muscle tandem promoter (LiMP), and despite the extensive liver-detargeting, this vector had a limited immune response to the hGAA transgene. This combination of capsid and promoter with improved muscle expression and specificity allowed for glycogen clearance in cardiac and skeletal muscles of Gaa-/- adult mice. In neonate Gaa-/- , complete rescue of glycogen content and muscle strength was observed 6 months after AAV vector injection. Our work highlights the importance of residual liver expression to control the immune response toward a potentially immunogenic transgene expressed in muscle. In conclusion, the demonstration of the efficacy of a muscle-specific AAV capsid-promoter combination for the full rescue of PD manifestation in both neonate and adult Gaa-/- provides a potential therapeutic avenue for the infantile-onset form of this devastating disease.
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Affiliation(s)
- P Sellier
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
- Genethon, Evry, France
| | - P Vidal
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
- Genethon, Evry, France
| | - B Bertin
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
- Genethon, Evry, France
| | - E Gicquel
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
- Genethon, Evry, France
| | | | | | | | | | | | - I Richard
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
- Genethon, Evry, France
| | - D A Gross
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
- Genethon, Evry, France
| | - F Mingozzi
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
- Genethon, Evry, France
| | - F Collaud
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
- Genethon, Evry, France
| | - G Ronzitti
- Université Paris-Saclay, Univ Evry, Inserm, Genethon, Integrare Research Unit UMR_S951, Evry, France
- Genethon, Evry, France
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5
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Avanti M, Martin A, Columbres RC, Mozaffar T, Kimonis V. Effects of enzyme replacement therapy on bone density in late onset Pompe disease. Mol Genet Metab 2023; 140:107644. [PMID: 37515933 DOI: 10.1016/j.ymgme.2023.107644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 07/31/2023]
Abstract
Pompe disease is an autosomal recessive disorder caused by a deficiency of α-glucosidase, resulting in the accumulation of glycogen in smooth, cardiac, and skeletal muscles, leading to skeletal muscle dysfunction, proximal muscle weakness, and early respiratory insufficiency. Although many patients exhibit decreased bone mineral density (BMD) and increased fractures, there is currently no official protocol for surveillance and management of osteoporosis and osteopenia in late onset Pompe disease (LOPD). Enzyme replacement therapy (ERT) has therapeutic effects on muscle function; however, very few studies report on the effect of ERT on bone mineralization in LOPD patients. Our study included 15 Pompe patients from 25 to 76 years of age on ERT for variable durations. Progressive impact of ERT on BMD of the hips and spine, and the frequency of osteopenia or osteoporosis was studied using DEXA scanning, and correlations were made with age of initiation of ERT, duration of ERT and six-minute walk test. We found a significant positive correlation between the age of ERT initiation and age of the subject, with increases in the Z-scores for the femur and lumbar region. Females had a significantly higher risk for developing osteoporosis compared to males. These results highlight the significance of ERT on reducing progression of osteoporosis in LOPD patients.
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Affiliation(s)
- Mahima Avanti
- Division of Genetics, Department of Pediatrics, University of California - Irvine, Orange, CA 92697, United States of America
| | - Angela Martin
- Division of Genetics, Department of Pediatrics, University of California - Irvine, Orange, CA 92697, United States of America
| | - Rod Carlo Columbres
- Division of Genetics, Department of Pediatrics, University of California - Irvine, Orange, CA 92697, United States of America
| | - Tahseen Mozaffar
- Division of Neuromuscular Diseases, Department of Neurology, University of California- Irvine, 200 S. Manchester Ave., Suite 206, Orange, CA, United States of America
| | - Virginia Kimonis
- Division of Genetics, Department of Pediatrics, University of California - Irvine, Orange, CA 92697, United States of America; Division of Neuromuscular Diseases, Department of Neurology, University of California- Irvine, 200 S. Manchester Ave., Suite 206, Orange, CA, United States of America; Department of Pathology, University of California - Irvine, Orange, CA 92697, United States of America.
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Zheng SY, Zhou WJ, Lin XN, Li FF, Xie CF, Liu DL, Yao DS. Increased yield of 2-O-α-d-glucopyranosyl-l-ascorbic acid synthesis by α-glucosidase using rational design that regulating the ground state of enzyme and substrate complex. Biotechnol J 2023; 18:e2300122. [PMID: 37288751 DOI: 10.1002/biot.202300122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/04/2023] [Accepted: 06/02/2023] [Indexed: 06/09/2023]
Abstract
BACKGROUND α-Glucosidase (AG) is a bifunctional enzyme, it has a capacity to synthesize 2-O-α-d-glucopyranosyl-l-ascorbic acid (AA-2G) from l-ascorbic acid (L-AA) and low-cost maltose under mild conditions, but it can also hydrolyze AA-2G, which leads to low synthesis efficiency of AA-2G. MAIN METHODS AND MAJOR RESULTS This study introduces a rational molecular design strategy to regulate enzymatic reactions based on inhibiting the formation of ground state of enzyme-substrate complex. Y215 was analyzed as the key amino acid site affecting the affinity of AG to AA-2G and L-AA. For the purpose of reducing the hydrolysis efficiency of AA-2G, the mutant Y215W was obtained by analyzing the molecular docking binding energy and hydrogen bond formation between AG and the substrates. Compared with the wild-type, isothermal titration calorimetry (ITC) results showed that the equilibrium dissociation constant (KD ) of the mutant for AA-2G was doubled; the Michaelis constant (Km ) for AA-2G was reduced by 1.15 times; and the yield of synthetic AA-2G was increased by 39%. CONCLUSIONS AND IMPLICATIONS Our work also provides a new reference strategy for the molecular modification of multifunctional enzymes and other enzymes in cascade reactions system.
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Affiliation(s)
- Shao-Yan Zheng
- Institute of Biomedicine, Jinan University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou City, Guangdong Province, China
- National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou City, Guangdong Province, China
| | - Wei-Jie Zhou
- Institute of Biomedicine, Jinan University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou City, Guangdong Province, China
- National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou City, Guangdong Province, China
| | - Xiang-Na Lin
- Institute of Biomedicine, Jinan University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou City, Guangdong Province, China
- National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou City, Guangdong Province, China
| | - Fei-Fei Li
- Department of Bioengineering, College of Life Science and Technology, Jinan University, Guangzhou City, Guangdong Province, China
| | - Chun-Fang Xie
- Institute of Biomedicine, Jinan University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou City, Guangdong Province, China
- National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou City, Guangdong Province, China
- Department of Bioengineering, College of Life Science and Technology, Jinan University, Guangzhou City, Guangdong Province, China
| | - Da-Ling Liu
- Department of Bioengineering, College of Life Science and Technology, Jinan University, Guangzhou City, Guangdong Province, China
| | - Dong-Sheng Yao
- Institute of Biomedicine, Jinan University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou City, Guangdong Province, China
- National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou City, Guangdong Province, China
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El Haddad L, Lai E, Murthy PKL, Biswas DD, Soufny R, Roger AL, Tata PR, ElMallah MK. GAA deficiency disrupts distal airway cells in Pompe disease. Am J Physiol Lung Cell Mol Physiol 2023; 325:L288-L298. [PMID: 37366541 PMCID: PMC10625827 DOI: 10.1152/ajplung.00032.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 06/16/2023] [Accepted: 06/21/2023] [Indexed: 06/28/2023] Open
Abstract
Pompe disease is an autosomal recessive glycogen storage disease caused by mutations in the gene that encodes acid alpha-glucosidase (GAA)-an enzyme responsible for hydrolyzing lysosomal glycogen. GAA deficiency results in systemic lysosomal glycogen accumulation and cellular disruption. Glycogen accumulation in skeletal muscles, motor neurons, and airway smooth muscle cells is known to contribute to respiratory insufficiency in Pompe disease. However, the impact of GAA deficiency on the distal alveolar type 1 and type 2 cells (AT1 and AT2) has not been evaluated. AT1 cells rely on lysosomes for cellular homeostasis so that they can maintain a thin barrier for gas exchange, whereas AT2 cells depend on lysosome-like structures (lamellar bodies) for surfactant production. Using a mouse model of Pompe disease, the Gaa-/- mouse, we investigated the consequences of GAA deficiency on AT1 and AT2 cells using histology, pulmonary function and mechanics, and transcriptional analysis. Histological analysis revealed increased accumulation of lysosomal-associated membrane protein 1 (LAMP1) in the Gaa-/- mice lungs. Furthermore, ultrastructural examination showed extensive intracytoplasmic vacuoles enlargement and lamellar body engorgement. Respiratory dysfunction was confirmed using whole body plethysmography and forced oscillometry. Finally, transcriptomic analysis demonstrated dysregulation of surfactant proteins in AT2 cells, specifically reduced levels of surfactant protein D in the Gaa-/- mice. We conclude that GAA enzyme deficiency leads to glycogen accumulation in the distal airway cells that disrupts surfactant homeostasis and contributes to respiratory impairments in Pompe disease.NEW & NOTEWORTHY This research highlights the impact of Pompe disease on distal airway cells. Prior to this work, respiratory insufficiency in Pompe disease was classically attributed to pathology in respiratory muscles and motor neurons. Using the Pompe mouse model, we note significant pathology in alveolar type 1 and 2 cells with reductions in surfactant protein D and disrupted surfactant homeostasis. These novel findings highlight the potential contributions of alveolar pathology to respiratory insufficiency in Pompe disease.
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Affiliation(s)
- Léa El Haddad
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, School of Medicine, Duke University, Durham, North Carolina, United States
| | - Elias Lai
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, School of Medicine, Duke University, Durham, North Carolina, United States
| | | | - Debolina D Biswas
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, School of Medicine, Duke University, Durham, North Carolina, United States
| | - Rania Soufny
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, School of Medicine, Duke University, Durham, North Carolina, United States
| | - Angela L Roger
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, School of Medicine, Duke University, Durham, North Carolina, United States
| | | | - Mai K ElMallah
- Division of Pulmonary and Sleep Medicine, Department of Pediatrics, School of Medicine, Duke University, Durham, North Carolina, United States
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8
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Labella B, Cotti Piccinelli S, Risi B, Caria F, Damioli S, Bertella E, Poli L, Padovani A, Filosto M. A Comprehensive Update on Late-Onset Pompe Disease. Biomolecules 2023; 13:1279. [PMID: 37759679 PMCID: PMC10526932 DOI: 10.3390/biom13091279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 08/10/2023] [Accepted: 08/21/2023] [Indexed: 09/29/2023] Open
Abstract
Pompe disease (PD) is an autosomal recessive disorder caused by mutations in the GAA gene that lead to a deficiency in the acid alpha-glucosidase enzyme. Two clinical presentations are usually considered, named infantile-onset Pompe disease (IOPD) and late-onset Pompe disease (LOPD), which differ in age of onset, organ involvement, and severity of disease. Assessment of acid alpha-glucosidase activity on a dried blood spot is the first-line screening test, which needs to be confirmed by genetic analysis in case of suspected deficiency. LOPD is a multi-system disease, thus requiring a multidisciplinary approach for efficacious management. Enzyme replacement therapy (ERT), which was introduced over 15 years ago, changes the natural progression of the disease. However, it has limitations, including a reduction in efficacy over time and heterogeneous therapeutic responses among patients. Novel therapeutic approaches, such as gene therapy, are currently under study. We provide a comprehensive review of diagnostic advances in LOPD and a critical discussion about the advantages and limitations of current and future treatments.
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Affiliation(s)
- Beatrice Labella
- Department of Clinical and Experimental Sciences, University of Brescia, 25100 Brescia, Italy; (B.L.); (S.C.P.); (A.P.)
- Unit of Neurology, ASST Spedali Civili, 25100 Brescia, Italy;
| | - Stefano Cotti Piccinelli
- Department of Clinical and Experimental Sciences, University of Brescia, 25100 Brescia, Italy; (B.L.); (S.C.P.); (A.P.)
- NeMO-Brescia Clinical Center for Neuromuscular Diseases, 25064 Brescia, Italy; (B.R.); (F.C.); (S.D.); (E.B.)
| | - Barbara Risi
- NeMO-Brescia Clinical Center for Neuromuscular Diseases, 25064 Brescia, Italy; (B.R.); (F.C.); (S.D.); (E.B.)
| | - Filomena Caria
- NeMO-Brescia Clinical Center for Neuromuscular Diseases, 25064 Brescia, Italy; (B.R.); (F.C.); (S.D.); (E.B.)
| | - Simona Damioli
- NeMO-Brescia Clinical Center for Neuromuscular Diseases, 25064 Brescia, Italy; (B.R.); (F.C.); (S.D.); (E.B.)
| | - Enrica Bertella
- NeMO-Brescia Clinical Center for Neuromuscular Diseases, 25064 Brescia, Italy; (B.R.); (F.C.); (S.D.); (E.B.)
| | - Loris Poli
- Unit of Neurology, ASST Spedali Civili, 25100 Brescia, Italy;
| | - Alessandro Padovani
- Department of Clinical and Experimental Sciences, University of Brescia, 25100 Brescia, Italy; (B.L.); (S.C.P.); (A.P.)
- Unit of Neurology, ASST Spedali Civili, 25100 Brescia, Italy;
| | - Massimiliano Filosto
- Department of Clinical and Experimental Sciences, University of Brescia, 25100 Brescia, Italy; (B.L.); (S.C.P.); (A.P.)
- NeMO-Brescia Clinical Center for Neuromuscular Diseases, 25064 Brescia, Italy; (B.R.); (F.C.); (S.D.); (E.B.)
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9
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Meena NK, Randazzo D, Raben N, Puertollano R. AAV-mediated delivery of secreted acid α-glucosidase with enhanced uptake corrects neuromuscular pathology in Pompe mice. JCI Insight 2023; 8:e170199. [PMID: 37463048 PMCID: PMC10543735 DOI: 10.1172/jci.insight.170199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 07/11/2023] [Indexed: 08/23/2023] Open
Abstract
Gene therapy is under advanced clinical development for several lysosomal storage disorders. Pompe disease, a debilitating neuromuscular illness affecting infants, children, and adults with different severity, is caused by a deficiency of lysosomal glycogen-degrading enzyme acid α-glucosidase (GAA). Here, we demonstrated that adeno-associated virus-mediated (AAV-mediated) systemic gene transfer reversed glycogen storage in all key therapeutic targets - skeletal and cardiac muscles, the diaphragm, and the central nervous system - in both young and severely affected old Gaa-knockout mice. Furthermore, the therapy reversed secondary cellular abnormalities in skeletal muscle, such as those in autophagy and mTORC1/AMPK signaling. We used an AAV9 vector encoding a chimeric human GAA protein with enhanced uptake and secretion to facilitate efficient spread of the expressed protein among multiple target tissues. These results lay the groundwork for a future clinical development strategy in Pompe disease.
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Affiliation(s)
- Naresh K. Meena
- Cell and Developmental Biology Center, National Heart, Lung, and Blood Institute, NIH, Bethesda, Maryland, USA
| | - Davide Randazzo
- Light Imaging Section, Office of Science and Technology, National Institute of Arthritis and Musculoskeletal and Skin Diseases, NIH, Bethesda, Maryland, USA
| | - Nina Raben
- Cell and Developmental Biology Center, National Heart, Lung, and Blood Institute, NIH, Bethesda, Maryland, USA
| | - Rosa Puertollano
- Cell and Developmental Biology Center, National Heart, Lung, and Blood Institute, NIH, Bethesda, Maryland, USA
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10
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Chan MY, Jalil JA, Yakob Y, Wahab SAA, Ali EZ, Khalid MKNM, Leong HY, Chew HB, Sivabalakrishnan JB, Ngu LH. Genotype, phenotype and treatment outcomes of 17 Malaysian patients with infantile-onset Pompe disease and the identification of 3 novel GAA variants. Orphanet J Rare Dis 2023; 18:231. [PMID: 37542277 PMCID: PMC10403872 DOI: 10.1186/s13023-023-02848-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 07/28/2023] [Indexed: 08/06/2023] Open
Abstract
BACKGROUND Pompe disease is a rare glycogen storage disorder caused by deficiency of the lysosomal enzyme acid alpha-glucosidase (GAA), leading to glycogen deposition in multiple tissues. Infantile-onset Pompe disease (IOPD) patients present within the first year of life with profound hypotonia and hypertrophic cardiomyopathy. Treatment with enzyme replacement therapy (ERT) has significantly improved survival for this otherwise lethal disorder. This study aims to describe the clinical and molecular spectrum of Malaysian IOPD patients, and to analyze their long term treatment outcomes. METHODS Seventeen patients diagnosed with IOPD between 2000 and 2020 were included in this retrospective cohort study. Clinical and biochemical data were collated and analyzed using descriptive statistics. GAA enzyme levels were performed on dried blood spots. Molecular analysis of the GAA gene was performed by polymerase chain reaction and Sanger sequencing. Structural modelling was used to predict the effect of the novel mutations on enzyme structure. RESULTS Our cohort had a median age of presentation of 3 months and median age of diagnosis of 6 months. Presenting features were hypertrophic cardiomyopathy (100%), respiratory insufficiency (94%), hypotonia (88%), failure to thrive (82%), feeding difficulties (76%), and hepatomegaly (76%). Fourteen different mutations in the GAA gene were identified, with three novel mutations, c.1552-14_1552-1del, exons 2-3 deletion and exons 6-10 deletion. The most common mutation identified was c.1935C > A p.(D645E), with an allele frequency of 33%. Sixteen patients received ERT at the median age of 7 months. Overall survival was 29%. Mean age of death was 17.5 months. Our longest surviving patient has atypical IOPD and is currently 20 years old. CONCLUSIONS This is the first study to analyze the genotype and phenotype of Malaysian IOPD patients, and has identified the c.1935C > A p.(D645E) as the most common mutation. The three novel mutations reported in this study expands the mutation spectrum for IOPD. Our low survival rate underscores the importance of early diagnosis and treatment in achieving better treatment outcomes.
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Affiliation(s)
- Mei-Yan Chan
- Department of Genetics, Hospital Kuala Lumpur, Ministry of Health Malaysia, Jalan Pahang, 50586, Kuala Lumpur, Malaysia.
| | - Julaina Abdul Jalil
- Unit of Biochemistry, Institute for Medical Research, Ministry of Health Malaysia, Kuala Lumpur, Malaysia
| | - Yusnita Yakob
- Unit of Molecular Diagnostics, Specialised Diagnostics Centre, National Institutes of Health, Ministry of Health Malaysia, Kuala Lumpur, Malaysia
| | - Siti Aishah Abdul Wahab
- Unit of Molecular Diagnostics, Specialised Diagnostics Centre, National Institutes of Health, Ministry of Health Malaysia, Kuala Lumpur, Malaysia
| | - Ernie Zuraida Ali
- Unit of Inborn Errors of Metabolism and Genetic, Nutrition, Metabolism and Cardiovascular Research Centre, Institute for Medical Research, National Institutes of Health, Ministry of Health Malaysia, Kuala Lumpur, Malaysia
| | - Mohd Khairul Nizam Mohd Khalid
- Unit of Molecular Diagnostics, Specialised Diagnostics Centre, National Institutes of Health, Ministry of Health Malaysia, Kuala Lumpur, Malaysia
| | - Huey-Yin Leong
- Department of Genetics, Hospital Kuala Lumpur, Ministry of Health Malaysia, Jalan Pahang, 50586, Kuala Lumpur, Malaysia
| | - Hui-Bein Chew
- Department of Genetics, Hospital Kuala Lumpur, Ministry of Health Malaysia, Jalan Pahang, 50586, Kuala Lumpur, Malaysia
| | | | - Lock-Hock Ngu
- Department of Genetics, Hospital Kuala Lumpur, Ministry of Health Malaysia, Jalan Pahang, 50586, Kuala Lumpur, Malaysia
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11
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Smith EC, Hopkins S, Case LE, Xu M, Walters C, Dearmey S, Han SO, Spears TG, Chichester JA, Bossen EH, Hornik CP, Cohen JL, Bali D, Kishnani PS, Koeberl DD. Phase I study of liver depot gene therapy in late-onset Pompe disease. Mol Ther 2023; 31:1994-2004. [PMID: 36805083 PMCID: PMC10362382 DOI: 10.1016/j.ymthe.2023.02.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 01/03/2023] [Accepted: 02/16/2023] [Indexed: 02/21/2023] Open
Abstract
Gene therapy with an adeno-associated virus serotype 8 (AAV8) vector (AAV8-LSPhGAA) could eliminate the need for enzyme replacement therapy (ERT) by creating a liver depot for acid α-glucosidase (GAA) production. We report initial safety and bioactivity of the first dose (1.6 × 1012 vector genomes/kg) cohort (n = 3) in a 52-week open-label, single-dose, dose-escalation study (NCT03533673) in patients with late-onset Pompe disease (LOPD). Subjects discontinued biweekly ERT after week 26 based on the detection of elevated serum GAA activity and the absence of clinically significant declines per protocol. Prednisone (60 mg/day) was administered as immunoprophylaxis through week 4, followed by an 11-week taper. All subjects demonstrated sustained serum GAA activities from 101% to 235% of baseline trough activity 2 weeks following the preceding ERT dose. There were no treatment-related serious adverse events. No subject had anti-capsid T cell responses that decreased transgene expression. Muscle biopsy at week 24 revealed unchanged muscle glycogen content in two of three subjects. At week 52, muscle GAA activity for the cohort was significantly increased (p < 0.05). Overall, these initial data support the safety and bioactivity of AAV8-LSPhGAA, the safety of withdrawing ERT, successful immunoprophylaxis, and justify continued clinical development of AAV8-LSPhGAA therapy in Pompe disease.
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Affiliation(s)
- Edward C Smith
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Sam Hopkins
- Asklepios Biopharmaceutical, Inc. (Askbio), Durham, NC, USA
| | - Laura E Case
- Department of Orthopedics, Duke University School of Medicine, Durham, NC, USA
| | - Ming Xu
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Crista Walters
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Stephanie Dearmey
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Sang-Oh Han
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Tracy G Spears
- Clinical Trials Statistics, Duke Clinical Research Institute, Durham, NC, USA
| | - Jessica A Chichester
- Immunology Core, Gene Therapy Program, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Edward H Bossen
- Department of Pathology, Duke University Medical Center, Durham, NC, USA
| | - Christoph P Hornik
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Jennifer L Cohen
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Deeksha Bali
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Priya S Kishnani
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Dwight D Koeberl
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA.
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12
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Hordeaux J, Ramezani A, Tuske S, Mehta N, Song C, Lynch A, Lupino K, Chichester JA, Buza EL, Dyer C, Yu H, Bell P, Weimer JM, Do H, Wilson JM. Immune transgene-dependent myocarditis in macaques after systemic administration of adeno-associated virus expressing human acid alpha-glucosidase. Front Immunol 2023; 14:1094279. [PMID: 37033976 PMCID: PMC10073725 DOI: 10.3389/fimmu.2023.1094279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/30/2023] [Indexed: 04/11/2023] Open
Abstract
Immune responses to human non-self transgenes can present challenges in preclinical studies of adeno-associated virus (AAV) gene therapy candidates in nonhuman primates. Although anti-transgene immune responses are usually mild and non-adverse, they can confound pharmacological readouts and complicate translation of results between species. We developed a gene therapy candidate for Pompe disease consisting of AAVhu68, a clade F AAV closely related to AAV9, that expresses an engineered human acid-alpha glucosidase (hGAA) tagged with an insulin-like growth factor 2 variant (vIGF2) peptide for enhanced cell uptake. Rhesus macaques were administered an intravenous dose of 1x1013 genome copies (GC)/kg, 5x1013 GC/kg, or 1 x 1014 GC/kg of AAVhu68.vIGF2.hGAA. Some unusually severe adaptive immune responses to hGAA presented, albeit with a high degree of variability between animals. Anti-hGAA responses ranged from absent to severe cytotoxic T-cell-mediated myocarditis with elevated troponin I levels. Cardiac toxicity was not dose dependent and affected five out of eleven animals. Upon further investigation, we identified an association between toxicity and a major histocompatibility complex class I haplotype (Mamu-A002.01) in three of these animals. An immunodominant peptide located in the C-terminal region of hGAA was subsequently identified via enzyme-linked immunospot epitope mapping. Another notable observation in this preclinical safety study cohort pertained to the achievement of robust and safe gene transfer upon intravenous administration of 5x1013 GC/kg in one animal with a low pre-existing neutralizing anti-capsid antibodies titer (1:20). Collectively, these findings may have significant implications for gene therapy inclusion criteria.
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Affiliation(s)
- Juliette Hordeaux
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Ali Ramezani
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Steve Tuske
- Amicus Therapeutics, Inc., Philadelphia, PA, United States
| | - Nickita Mehta
- Amicus Therapeutics, Inc., Philadelphia, PA, United States
| | - Chunjuan Song
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Anna Lynch
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Katherine Lupino
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Jessica A. Chichester
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Elizabeth L. Buza
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Cecilia Dyer
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Hongwei Yu
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Peter Bell
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Jill M. Weimer
- Amicus Therapeutics, Inc., Philadelphia, PA, United States
| | - Hung Do
- Amicus Therapeutics, Inc., Philadelphia, PA, United States
| | - James M. Wilson
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
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13
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Kinton S, Dufault MR, Zhang M, George K. Transcriptomic characterization of clinical skeletal muscle biopsy from late-onset Pompe patients. Mol Genet Metab 2023; 138:107526. [PMID: 36774918 DOI: 10.1016/j.ymgme.2023.107526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 01/21/2023] [Accepted: 01/22/2023] [Indexed: 01/26/2023]
Abstract
Pompe disease is a rare lysosomal storage disorder arising from recessive mutations in the acid α-glucosidase gene and resulting in the accumulation of glycogen, particularly in the cardiac and skeletal muscle. The current standard of care is administration of enzyme replacement therapy in the form of alglucosidase alfa or the recently approved avalglucosidase alfa. In order to better understand the underlying cellular processes that are disrupted in Pompe disease, we conducted gene expression analysis on skeletal muscle biopsies obtained from late-onset Pompe disease patients (LOPD) prior to treatment and following six months of enzyme replacement with avalglucosidase alfa. The LOPD patients had a distinct transcriptomic signature as compared to control patient samples, largely characterized by perturbations in pathways involved in lysosomal function and energy metabolism. Although patients were highly heterogeneous, they collectively exhibited a strong trend towards attenuation of the dysregulated genes following just six months of treatment. Notably, the enzyme replacement therapy had a strong stabilizing effect on gene expression, with minimal worsening in genes that were initially dysregulated. Many of the cellular process that were altered in LOPD patients were also affected in the more clinically severe infantile-onset (IOPD) patients. Additionally, both LOPD and IOPD patients demonstrated enrichment across several inflammatory pathways, despite a lack of overt immune cell infiltration. This study provides further insight into Pompe disease biology and demonstrates the positive effects of avalglucosidase alfa treatment.
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Affiliation(s)
- Sofia Kinton
- Rare and Neurologic Disease Research, Sanofi, 350 Water Street, Cambridge, MA, United States of America.
| | - Michael R Dufault
- Precision Medicine & Computational Biology, Sanofi, 350 Water Street, Cambridge, MA, United States of America
| | - Mindy Zhang
- Precision Medicine & Computational Biology, Sanofi, 350 Water Street, Cambridge, MA, United States of America
| | - Kelly George
- Rare and Neurologic Disease Research, Sanofi, 350 Water Street, Cambridge, MA, United States of America
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14
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Pompe's Disease Successfully Treated In Utero. Am J Med Genet A 2023; 191:654-5. [PMID: 36775951 DOI: 10.1002/ajmg.a.62795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
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15
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Canibano-Fraile R, Harlaar L, Dos Santos CA, Hoogeveen-Westerveld M, Demmers JAA, Snijders T, Lijnzaad P, Verdijk RM, van der Beek NAME, van Doorn PA, van der Ploeg AT, Brusse E, Pijnappel WWMP, Schaaf GJ. Lysosomal glycogen accumulation in Pompe disease results in disturbed cytoplasmic glycogen metabolism. J Inherit Metab Dis 2023; 46:101-115. [PMID: 36111639 PMCID: PMC10092494 DOI: 10.1002/jimd.12560] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 08/26/2022] [Accepted: 09/14/2022] [Indexed: 01/19/2023]
Abstract
Pompe disease is an inherited metabolic myopathy caused by deficiency of acid alpha-glucosidase (GAA), resulting in lysosomal glycogen accumulation. Residual GAA enzyme activity affects disease onset and severity, although other factors, including dysregulation of cytoplasmic glycogen metabolism, are suspected to modulate the disease course. In this study, performed in mice and patient biopsies, we found elevated protein levels of enzymes involved in glucose uptake and cytoplasmic glycogen synthesis in skeletal muscle from mice with Pompe disease, including glycogenin (GYG1), glycogen synthase (GYS1), glucose transporter 4 (GLUT4), glycogen branching enzyme 1 (GBE1), and UDP-glucose pyrophosphorylase (UGP2). Expression levels were elevated before the loss of muscle mass and function. For first time, quantitative mass spectrometry in skeletal muscle biopsies from five adult patients with Pompe disease showed increased expression of GBE1 protein relative to healthy controls at the group level. Paired analysis of individual patients who responded well to treatment with enzyme replacement therapy (ERT) showed reduction of GYS1, GYG1, and GBE1 in all patients after start of ERT compared to baseline. These results indicate that metabolic changes precede muscle wasting in Pompe disease, and imply a positive feedforward loop in Pompe disease, in which lysosomal glycogen accumulation promotes cytoplasmic glycogen synthesis and glucose uptake, resulting in aggravation of the disease phenotype.
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Affiliation(s)
- Rodrigo Canibano-Fraile
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Department of Pediatrics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Center for Lysosomal and Metabolic Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Laurike Harlaar
- Center for Lysosomal and Metabolic Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Department of Neurology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Carlos A Dos Santos
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Department of Pediatrics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Center for Lysosomal and Metabolic Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | | | - Jeroen A A Demmers
- Erasmus Center for Biomics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Tim Snijders
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Philip Lijnzaad
- Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - Robert M Verdijk
- Department of Pathology, Section Neuropathology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Nadine A M E van der Beek
- Center for Lysosomal and Metabolic Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Department of Neurology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Pieter A van Doorn
- Center for Lysosomal and Metabolic Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Department of Neurology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Ans T van der Ploeg
- Department of Pediatrics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Center for Lysosomal and Metabolic Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Esther Brusse
- Center for Lysosomal and Metabolic Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Department of Neurology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - W W M Pim Pijnappel
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Department of Pediatrics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Center for Lysosomal and Metabolic Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Gerben J Schaaf
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Department of Pediatrics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
- Center for Lysosomal and Metabolic Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands
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16
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Kan SH, Huang JY, Harb J, Rha A, Dalton ND, Christensen C, Chan Y, Davis-Turak J, Neumann J, Wang RY. CRISPR-mediated generation and characterization of a Gaa homozygous c.1935C>A (p.D645E) Pompe disease knock-in mouse model recapitulating human infantile onset-Pompe disease. Sci Rep 2022; 12:21576. [PMID: 36517654 PMCID: PMC9751086 DOI: 10.1038/s41598-022-25914-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022] Open
Abstract
Pompe disease, an autosomal recessive disorder caused by deficient lysosomal acid α-glucosidase (GAA), is characterized by accumulation of intra-lysosomal glycogen in skeletal and oftentimes cardiac muscle. The c.1935C>A (p.Asp645Glu) variant, the most frequent GAA pathogenic mutation in people of Southern Han Chinese ancestry, causes infantile-onset Pompe disease (IOPD), presenting neonatally with severe hypertrophic cardiomyopathy, profound muscle hypotonia, respiratory failure, and infantile mortality. We applied CRISPR-Cas9 homology-directed repair (HDR) using a novel dual sgRNA approach flanking the target site to generate a Gaaem1935C>A knock-in mouse model and a myoblast cell line carrying the Gaa c.1935C>A mutation. Herein we describe the molecular, biochemical, histological, physiological, and behavioral characterization of 3-month-old homozygous Gaaem1935C>A mice. Homozygous Gaaem1935C>A knock-in mice exhibited normal Gaa mRNA expression levels relative to wild-type mice, had near-abolished GAA enzymatic activity, markedly increased tissue glycogen storage, and concomitantly impaired autophagy. Three-month-old mice demonstrated skeletal muscle weakness and hypertrophic cardiomyopathy but no premature mortality. The Gaaem1935C>A knock-in mouse model recapitulates multiple salient aspects of human IOPD caused by the GAA c.1935C>A pathogenic variant. It is an ideal model to assess innovative therapies to treat IOPD, including personalized therapeutic strategies that correct pathogenic variants, restore GAA activity and produce functional phenotypes.
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Affiliation(s)
- Shih-Hsin Kan
- CHOC Children's Research Institute, Orange, CA, 92868, USA
| | | | - Jerry Harb
- CHOC Children's Research Institute, Orange, CA, 92868, USA
| | - Allisandra Rha
- CHOC Children's Research Institute, Orange, CA, 92868, USA
| | - Nancy D Dalton
- CHOC Children's Research Institute, Orange, CA, 92868, USA
| | | | - Yunghang Chan
- School of Medicine, New York Medical College, Valhalla, NY, 10595, USA
| | | | - Jonathan Neumann
- Transgenic Mouse Facility, University of California Irvine, Irvine, CA, 92697, USA
| | - Raymond Y Wang
- Division of Metabolic Disorders, CHOC Children's Specialists, Orange, CA, 92868, USA.
- Department of Pediatrics, University of California-Irvine, Irvine, CA, 92697, USA.
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17
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Yang L, Tian Y, Fang Y, Chen ML, Smagghe G, Niu J, Wang JJ. A saliva α-glucosidase MpAgC2-2 enhance the feeding of green peach aphid Myzus persicae via extra-intestinal digestion. Insect Biochem Mol Biol 2022; 150:103846. [PMID: 36202385 DOI: 10.1016/j.ibmb.2022.103846] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/15/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Aphids feed on plant phloem sap that contains massive amounts of sucrose; this not only provides vital nutrition for the aphids but also produces high osmotic pressure. To utilize this carbon source and overcome the osmotic pressure, sucrose is hydrolyzed into the monosaccharides, glucose and fructose. In the green peach aphid (Myzus persicae), we show that this process is facilitated by a key α-glucosidase (MpAgC2-2), which is abundant in the aphid salivary gland and is secreted into leaves during feeding. MpAgC2-2 has a pH optimum of 8.0 in vitro, suggesting it has adapted to the environment of plant cells. Silencing MpAgC2-2 (but not the gut-specific MpAgC3-4) significantly increased the amount of sucrose ingested and hindered aphid feeding on the phloem of tobacco seedlings, resulting in a smaller body size, as well as lower α-glucosidase activity and glucose levels. These effects could be rescued by feeding aphids on tobacco plants transiently expressing MpAgC2-2. The transient expression of MpAgC2-2 also led to the hydrolysis of sucrose in tobacco leaves. Taken together, these results demonstrate that MpAgC2-2 is a salivary protein that facilitates extra-intestinal feeding via sucrose hydrolysis. Our findings provide insight into the ability of aphids to digest the high concentration of sucrose in phloem, and the underlying mechanism of extra-intestinal digestion.
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Affiliation(s)
- Li Yang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing, China.
| | - Yuan Tian
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing, China.
| | - Ying Fang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China.
| | - Meng-Ling Chen
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing, China.
| | - Guy Smagghe
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing, China; Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium.
| | - Jinzhi Niu
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing, China.
| | - Jin-Jun Wang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China; International Joint Laboratory of China-Belgium on Sustainable Crop Pest Control, Academy of Agricultural Sciences, Southwest University, Chongqing, China.
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18
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Schoser B, Laforet P. Therapeutic thoroughfares for adults living with Pompe disease. Curr Opin Neurol 2022; 35:645-650. [PMID: 35942661 DOI: 10.1097/wco.0000000000001092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW Pompe disease is caused by autosomal recessive mutations in the acid α-glucosidase gene leading to a multiorgan deficiency of the enzyme acid glucosidase alfa. To recover to a nondiseased status, a lift over a threshold of 25% acid glucosidase alfa enzyme activity is required. This update on therapeutic thoroughfares for adult Pompe disease aims to assist neuromuscular and metabolic specialists. RECENT FINDINGS We reviewed the recent studies covering enzyme replacement therapy, gene therapy, and substrate reduction therapy in adult Pompe disease. Results of phase 3 studies and the first sets of long-term data of both novel enzyme replacement therapies, avalglucosidase alfa, and ciplaglucodsidase alfa combined with miglustat, are public. First gene therapy trials are ongoing. Substrate reduction therapy is in early transition to the clinical trial phase. We still miss dose escalation and intensification of frequency trials on enzyme replacement therapy in adults, probably suitable to echo current results in infantile and juvenile Pompe disease. SUMMARY Therapy of Pompe disease reaches new thoroughfares reducing the overall disease burden of patients; however, individualization of these novel therapeutic options remains challenging. Consensus-based and shared decision-based recommendations need to be established based on reliable real-world data to allow the best standards of care worldwide.
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Affiliation(s)
- Benedikt Schoser
- Friedrich-Baur-Institute, Department of Neurology, LMU Clinics Ludwig-Maximilians-University, Munich, Germany
| | - Pascal Laforet
- Nord-Est/Ile-de-France Neuromuscular Reference Center, Neurology Department, Raymond-Poincaré Hospital, Garches, and FHU PHENIX, UVSQ Paris-Saclay University, France
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19
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Roger AL, Sethi R, Huston ML, Scarrow E, Bao-Dai J, Lai E, Biswas DD, Haddad LE, Strickland LM, Kishnani PS, ElMallah MK. What's new and what's next for gene therapy in Pompe disease? Expert Opin Biol Ther 2022; 22:1117-1135. [PMID: 35428407 PMCID: PMC10084869 DOI: 10.1080/14712598.2022.2067476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 04/14/2022] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Pompe disease is an autosomal recessive disorder caused by a deficiency of acid-α-glucosidase (GAA), an enzyme responsible for hydrolyzing lysosomal glycogen. A lack of GAA leads to accumulation of glycogen in the lysosomes of cardiac, skeletal, and smooth muscle cells, as well as in the central and peripheral nervous system. Enzyme replacement therapy has been the standard of care for 15 years and slows disease progression, particularly in the heart, and improves survival. However, there are limitations of ERT success, which gene therapy can overcome. AREAS COVERED Gene therapy offers several advantages including prolonged and consistent GAA expression and correction of skeletal muscle as well as the critical CNS pathology. We provide a systematic review of the preclinical and clinical outcomes of adeno-associated viral mediated gene therapy and alternative gene therapy strategies, highlighting what has been successful. EXPERT OPINION Although the preclinical and clinical studies so far have been promising, barriers exist that need to be addressed in gene therapy for Pompe disease. New strategies including novel capsids for better targeting, optimized DNA vectors, and adjuctive therapies will allow for a lower dose, and ameliorate the immune response.
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Affiliation(s)
- Angela L. Roger
- Division of Pulmonary Medicine, Department of Pediatrics, Duke University Medical Center Box 2644, Durham, North Carolina, 27710, USA
| | - Ronit Sethi
- Division of Pulmonary Medicine, Department of Pediatrics, Duke University Medical Center Box 2644, Durham, North Carolina, 27710, USA
| | - Meredith L. Huston
- Division of Pulmonary Medicine, Department of Pediatrics, Duke University Medical Center Box 2644, Durham, North Carolina, 27710, USA
| | - Evelyn Scarrow
- Division of Pulmonary Medicine, Department of Pediatrics, Duke University Medical Center Box 2644, Durham, North Carolina, 27710, USA
| | - Joy Bao-Dai
- Division of Pulmonary Medicine, Department of Pediatrics, Duke University Medical Center Box 2644, Durham, North Carolina, 27710, USA
| | - Elias Lai
- Division of Pulmonary Medicine, Department of Pediatrics, Duke University Medical Center Box 2644, Durham, North Carolina, 27710, USA
| | - Debolina D. Biswas
- Division of Pulmonary Medicine, Department of Pediatrics, Duke University Medical Center Box 2644, Durham, North Carolina, 27710, USA
| | - Léa El Haddad
- Division of Pulmonary Medicine, Department of Pediatrics, Duke University Medical Center Box 2644, Durham, North Carolina, 27710, USA
| | - Laura M. Strickland
- Division of Pulmonary Medicine, Department of Pediatrics, Duke University Medical Center Box 2644, Durham, North Carolina, 27710, USA
| | - Priya S. Kishnani
- Division of Medical Genetics, Department of Pediatrics, Duke University, Durham, North Carolina USA
| | - Mai K. ElMallah
- Division of Pulmonary Medicine, Department of Pediatrics, Duke University Medical Center Box 2644, Durham, North Carolina, 27710, USA
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20
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Nilsson MI, Crozier M, Di Carlo A, Xhuti D, Manta K, Roik LJ, Bujak AL, Nederveen JP, Tarnopolsky MG, Hettinga B, Meena NK, Raben N, Tarnopolsky MA. Nutritional co-therapy with 1,3-butanediol and multi-ingredient antioxidants enhances autophagic clearance in Pompe disease. Mol Genet Metab 2022; 137:228-240. [PMID: 35718712 DOI: 10.1016/j.ymgme.2022.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/03/2022] [Accepted: 06/04/2022] [Indexed: 10/18/2022]
Abstract
Alglucosidase alpha is an orphan drug approved for enzyme replacement therapy (ERT) in Pompe disease (PD); however, its efficacy is limited in skeletal muscle because of a partial blockage of autophagic flux that hinders intracellular trafficking and enzyme delivery. Adjunctive therapies that enhance autophagic flux and protect mitochondrial integrity may alleviate autophagic blockage and oxidative stress and thereby improve ERT efficacy in PD. In this study, we compared the benefits of ERT combined with a ketogenic diet (ERT-KETO), daily administration of an oral ketone precursor (1,3-butanediol; ERT-BD), a multi-ingredient antioxidant diet (ERT-MITO; CoQ10, α-lipoic acid, vitamin E, beetroot extract, HMB, creatine, and citrulline), or co-therapy with the ketone precursor and multi-ingredient antioxidants (ERT-BD-MITO) on skeletal muscle pathology in GAA-KO mice. We found that two months of 1,3-BD administration raised circulatory ketone levels to ≥1.2 mM, attenuated autophagic buildup in type 2 muscle fibers, and preserved muscle strength and function in ERT-treated GAA-KO mice. Collectively, ERT-BD was more effective vs. standard ERT and ERT-KETO in terms of autophagic clearance, dampening of oxidative stress, and muscle maintenance. However, the addition of multi-ingredient antioxidants (ERT-BD-MITO) provided the most consistent benefits across all outcome measures and normalized mitochondrial protein expression in GAA-KO mice. We therefore conclude that nutritional co-therapy with 1,3-butanediol and multi-ingredient antioxidants may provide an alternative to ketogenic diets for inducing ketosis and enhancing autophagic flux in PD patients.
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Affiliation(s)
- Mats I Nilsson
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada; Exerkine Corporation, McMaster University, Hamilton, Ontario, Canada
| | - Michael Crozier
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Alessia Di Carlo
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Donald Xhuti
- Exerkine Corporation, McMaster University, Hamilton, Ontario, Canada
| | - Katherine Manta
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Liza J Roik
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Adam L Bujak
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Joshua P Nederveen
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | | | - Bart Hettinga
- Exerkine Corporation, McMaster University, Hamilton, Ontario, Canada
| | - Naresh K Meena
- Cell and Developmental Biology Center, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD, USA
| | - Nina Raben
- Cell and Developmental Biology Center, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD, USA
| | - Mark A Tarnopolsky
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada; Exerkine Corporation, McMaster University, Hamilton, Ontario, Canada.
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21
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Husein DM, Rizk S, Hoter A, Wanes D, D'Amato M, Naim HY. Severe pathogenic variants of intestinal sucrase-isomaltase interact avidly with the wild type enzyme and negatively impact its function and trafficking. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166523. [PMID: 35985447 DOI: 10.1016/j.bbadis.2022.166523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/05/2022] [Accepted: 08/11/2022] [Indexed: 11/18/2022]
Abstract
Sucrase-isomaltase (SI) is the major disaccharidase of the small intestine, exhibiting a broad α-glucosidase activity profile. The importance of SI in gut health is typified by the development of sucrose and starch maldigestion in individuals carrying mutations in the SI gene, like in congenital sucrase-isomaltase deficiency (CSID). Common and rare defective SI gene variants (SIGVs) have also been shown to increase the risk of irritable bowel syndrome (IBS) with symptoms and clinical features similar to CSID and also in symptomatic heterozygote carriers. Here, we investigate the impact of the most abundant and highly pathogenic SIGVs that occur in heterozygotes on wild type SI (SIWT) by adapting an in vitro system that recapitulates SI gene heterozygosity. Our results demonstrate that pathogenic SI mutants interact avidly with SIWT, negatively impact its enzymatic function, alter the biosynthetic pattern and impair the trafficking behavior of the heterodimer. The in vitro recapitulation of a heterozygous state demonstrates potential for SIGVs to act in a semi-dominant fashion, by further reducing disaccharidase activity via sequestration of the SIWT copy into an inactive form of the enzymatic heterodimer. This study provides novel insights into the potential role of heterozygosity in the pathophysiology of CSID and IBS.
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Affiliation(s)
- Diab M Husein
- Department of Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany
| | - Sandra Rizk
- Department of Natural Sciences, Lebanese American University, Beirut, Lebanon
| | - Abdullah Hoter
- Department of Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany
| | - Dalanda Wanes
- Department of Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany
| | - Mauro D'Amato
- Gastrointestinal Genetics Lab, CIC bioGUNE - BRTA, Derio, Spain; Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Hassan Y Naim
- Department of Biochemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany.
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22
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Guo Q, Gao Y, Xing C, Niu Y, Ding L, Dai X. Culex quinquefasciatus alpha-glucosidase serves as a putative receptor of the Cry48Aa toxin from Lysinibacillus sphaericus. Insect Biochem Mol Biol 2022; 147:103799. [PMID: 35662624 DOI: 10.1016/j.ibmb.2022.103799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 05/20/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
The Cry48Aa/Cry49Aa toxin of Lysinibacillus sphaericus shows specific toxicity towards larvae of Culex spp. Individual Cry48Aa and Cry49Aa subunits interact with distinct target sites in the larval midgut and overcome the resistance of Culex to the Bin toxin. However, the toxin-binding proteins have not yet been identified. The present study aimed to identify Cry48Aa-binding proteins in Culex quinquefasciatus. Pulldown assays using C. quinquefasciatus midgut brush-border membrane fractions (BBMFs) identified a class of proteins, including aminopeptidases (APNs), protease m1 zinc metalloproteases, alkaline phosphatases (ALPs), and maltases, that could be potentially involved in the mode of action of this toxin. RNA interference analysis showed that silenced larvae treated with dsRNA of the alpha-glucosidase (named Glu71) gene were more tolerant of the Cry48Aa/Cry49Aa toxin, which induced less than 20% mortality. The amino acid sequence of Glu71 exhibited 42% identity with Cqm1/Cpm1, which acted as a Bin toxin receptor. Toxin binding assays showed that Cry48Aa had a high specific binding capacity for the Glu71 protein, whereas Cry49Aa exhibited no specific binding. Overall, our results showed that Glu71 is a Cry48-binding protein involved in Cry48Aa/Cry49Aa toxicity.
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Affiliation(s)
- Qingyun Guo
- College of Life Sciences, Gannan Normal University, Ganzhou City of Jiangxi Province, 341000, PR China.
| | - Yuan Gao
- College of Life Sciences, Gannan Normal University, Ganzhou City of Jiangxi Province, 341000, PR China
| | - Chong Xing
- School of Information Engineering, Gannan Medical University, Ganzhou City of Jiangxi Province, 341000, PR China
| | - Yingchao Niu
- College of Life Sciences, Gannan Normal University, Ganzhou City of Jiangxi Province, 341000, PR China
| | - Lu Ding
- College of Life Sciences, Gannan Normal University, Ganzhou City of Jiangxi Province, 341000, PR China
| | - Xiaohua Dai
- College of Life Sciences, Gannan Normal University, Ganzhou City of Jiangxi Province, 341000, PR China
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23
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Ding W, Zhou W, Xie C, Liu D, Yao D. [Comparison of three α-glucosidases from different sources in the synthesis of L-ascorbic acid 2-glucoside]. Sheng Wu Gong Cheng Xue Bao 2022; 38:2523-2533. [PMID: 35871622 DOI: 10.13345/j.cjb.210710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
L-ascorbic acid 2-glucoside (AA-2G) is a derivative of L-ascorbic acid (L-AA). Compared with L-AA, it has good stability and is easily decomposed by enzyme in the human body. α-Glucosidase (AG) was the first enzyme found capable of producing AA-2G. However, researches on this enzyme is still in infancy. We took AG derived from Aspergillus niger (AAG), Japanese rice (JrAG) and Rattus rattus (RAG), and compared their specific enzymatic activity and transglycosidation rate, with the aim to improve the synthesis of AA-2G by the transglycosidation of AG. The genes encoding these three different AG were cloned and expressed in engineered yeast. The conditions for the transglycosidation reaction of these three enzymes were optimized and the transglycosidation efficiency and yield of AA-2G under the optimized conditions were compared. The specific activity of AAG reached 1.0 U/mg, while the yield of AA-2G reached 153.1 mg/L with a transglycosidation rate of 0.5%. The specific activity of RAG reached 0.4 U/mg, while the yield of AA-2G reached 861.0 mg/L with a transglycosidation rate of 2.5%. JrAG showed the highest specific activity and transglycosidation rate. The enzyme specific activity of JrAG reached 1.9 U/mg, while the yield of AA-2G reached 2 577.2 mg/L with a transglycosidation rate of 7.6%, much higher than that of the other two glucosidases. JrAG may thus have potential to improve the synthesis of AA-2G.
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Affiliation(s)
- Weiqiu Ding
- Institute of Biomedicine, Jinan University, Guangzhou 510632, Guangdong, China
- National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, Guangdong, China
- Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Weijie Zhou
- Institute of Biomedicine, Jinan University, Guangzhou 510632, Guangdong, China
- National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, Guangdong, China
- Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, Guangdong, China
| | - Chunfang Xie
- Department of Bioengineering, Jinan University, Guangzhou 510632, Guangdong, China
| | - Daling Liu
- Department of Bioengineering, Jinan University, Guangzhou 510632, Guangdong, China
| | - Dongsheng Yao
- Institute of Biomedicine, Jinan University, Guangzhou 510632, Guangdong, China
- National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou 510632, Guangdong, China
- Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, Guangdong, China
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24
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Han SO, Gheorghiu D, Chang A, Mapatano SH, Li S, Brooks E, Koeberl D. Efficacious Androgen Hormone Administration in Combination with Adeno-Associated Virus Vector-Mediated Gene Therapy in Female Mice with Pompe Disease. Hum Gene Ther 2022; 33:479-491. [PMID: 35081735 PMCID: PMC9142766 DOI: 10.1089/hum.2021.218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 01/24/2022] [Indexed: 11/12/2022] Open
Abstract
Pompe disease is an autosomal recessive lysosomal storage disorder caused by deficiency of acid α-glucosidase (GAA), resulting in skeletal muscle weakness and cardiomyopathy that progresses despite currently available therapy in some patients. The development of gene therapy with adeno-associated virus (AAV) vectors revealed a sex-dependent decrease in efficacy in female mice with Pompe disease. This study evaluated the effect of testosterone on gene therapy with an AAV2/8 vector containing a liver-specific promoter to drive expression of GAA (AAV2/8-LSPhGAA) in female GAA-knockout (KO) mice that were implanted with pellets containing testosterone propionate before vector administration. Six weeks after treatment, neuromuscular function and muscle strength were improved as demonstrated by increased Rotarod and wirehang latency for female mice treated with testosterone and vector, in comparison with vector alone. Biochemical correction improved after the addition of testosterone as demonstrated by increased GAA activity and decreased glycogen content in the skeletal muscles of female mice treated with testosterone and vector, in comparison with vector alone. An alternative androgen, oxandrolone, was evaluated similarly to reveal increased GAA in the diaphragm and extensor digitorum longus of female GAA-KO mice after oxandrolone administration; however, glycogen content was unchanged by oxandrolone treatment. The efficacy of androgen hormone treatment in females correlated with increased mannose-6-phosphate receptor in skeletal muscle. These data confirmed the benefits of brief treatment with an androgen hormone in mice with Pompe disease during gene therapy.
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Affiliation(s)
- Sang-oh Han
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
| | - Dorothy Gheorghiu
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
| | - Alex Chang
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
| | - Sweet Hope Mapatano
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
| | - Songtao Li
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
| | - Elizabeth Brooks
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Laboratory Animal Resources, Duke University, Durham, North Carolina, USA
| | - Dwight Koeberl
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Molecular Genetics and Microbiology, Duke University, Durham, North Carolina, USA
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25
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Justino AB, Guerra Silva HC, Franco RR, de Oliveira Cavalcante Pimentel I, Silva NF, Saraiva AL, Espindola FS. Flavonoids and proanthocyanidins-rich fractions from Eugenia dysenterica fruits and leaves inhibit the formation of advanced glycation end-products and the activities of α-amylase and α-glucosidase. J Ethnopharmacol 2022; 285:114902. [PMID: 34890729 DOI: 10.1016/j.jep.2021.114902] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 11/24/2021] [Accepted: 12/06/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Different parts of Eugenia dysenterica have been popularly used in Brazil for treating diabetes mellitus and its complications. The present study aimed to screen extracts from E. dysenterica fruit pulp, peel, seed and leaf for carbohydrate digestive enzymes inhibitors with antioxidant and anti-glycation capacities. MATERIALS AND METHODS Ethanol extracts of E. dysenterica were subjected to a liquid-liquid fractionation and the fractions were used to evaluate their antioxidant properties and inhibitory potential against the formation of advanced glycation end-products (AGEs) and α-amylase and α-glucosidase. RESULTS The ethyl acetate fraction (EtOAcF) from seed and the dichloromethane fraction (CH2Cl2F) and EtOAcF from leaf had high antioxidant capacities (ORAC >5500 μmol trolox eq g-1, FRAP >1500 μmol trolox eq g-1 and DPPH IC50 < 35 μg mL-1) and showed exceptional inhibitory activities against AGEs formation (glycation inhibition above 80% at 10 μg mL-1) and α-amylase and α-glucosidase (inhibition above 50% at 10 μg mL-1). The gallated B-types proanthocyanidins were the most active ingredients found in the leaf of E. dysenterica (CH2Cl2 and EtOAcF), being responsible for the notorious inhibitory effects against glycation and glycoside hydrolases due to their ortho-hydroxyl groups, which play role in scavenge and quench free radicals and glycated products, and may occupy the enzymes' substrate binding pocket. Furthermore, gallic acid, quercetin and its glycoside derivatives were detected by the first time in the E. dysenterica fruit seed (EtOAcF). CONCLUSIONS The results strongly contribute to the understanding of the antidiabetic potential of seeds and leaves from E. dysenterica, a species from a global biodiversity hotspot, which appears to be linked to the prevention of oxidative stress, AGEs production and postprandial hyperglycemia.
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Affiliation(s)
- Allisson Benatti Justino
- Institute of Biotechnology - Federal University of Uberlandia, Av. Pará, 1720, 38400-902, Uberlândia, MG, Brazil
| | - Heitor Cappato Guerra Silva
- Institute of Biotechnology - Federal University of Uberlandia, Av. Pará, 1720, 38400-902, Uberlândia, MG, Brazil
| | - Rodrigo Rodrigues Franco
- Institute of Biotechnology - Federal University of Uberlandia, Av. Pará, 1720, 38400-902, Uberlândia, MG, Brazil
| | | | - Nicole Fernandes Silva
- Institute of Biotechnology - Federal University of Uberlandia, Av. Pará, 1720, 38400-902, Uberlândia, MG, Brazil
| | - André Lopes Saraiva
- Institute of Biotechnology - Federal University of Uberlandia, Av. Pará, 1720, 38400-902, Uberlândia, MG, Brazil
| | - Foued Salmen Espindola
- Institute of Biotechnology - Federal University of Uberlandia, Av. Pará, 1720, 38400-902, Uberlândia, MG, Brazil.
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26
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Eggers M, Vannoy CH, Huang J, Purushothaman P, Brassard J, Fonck C, Meng H, Prom MJ, Lawlor MW, Cunningham J, Sadhu C, Mavilio F. Muscle-directed gene therapy corrects Pompe disease and uncovers species-specific GAA immunogenicity. EMBO Mol Med 2022; 14:e13968. [PMID: 34850579 PMCID: PMC8749482 DOI: 10.15252/emmm.202113968] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 11/04/2021] [Accepted: 11/09/2021] [Indexed: 11/21/2022] Open
Abstract
Pompe disease is a severe disorder caused by loss of acid α-glucosidase (GAA), leading to glycogen accumulation in tissues and neuromuscular and cardiac dysfunction. Enzyme replacement therapy is the only available treatment. AT845 is an adeno-associated viral vector designed to express human GAA specifically in skeletal muscle and heart. Systemic administration of AT845 in Gaa-/- mice led to a dose-dependent increase in GAA activity, glycogen clearance in muscles and heart, and functional improvement. AT845 was tolerated in cynomolgus macaques at low doses, while high doses caused anti-GAA immune response, inflammation, and cardiac abnormalities resulting in unscheduled euthanasia of two animals. Conversely, a vector expressing the macaque GAA caused no detectable pathology, indicating that the toxicity observed with AT845 was an anti-GAA xenogeneic immune response. Western blot analysis showed abnormal processing of human GAA in cynomolgus muscle, adding to the species-specific effects of enzyme expression. Overall, these studies show that AAV-mediated GAA delivery to muscle is efficacious in Gaa-/- mice and highlight limitations in predicting the toxicity of AAV vectors encoding human proteins in non-human species.
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Affiliation(s)
- Michelle Eggers
- Nonclinical, Pharmacology/ToxicologyAudentes TherapeuticsSan FranciscoCAUSA
| | - Charles H Vannoy
- Nonclinical, Pharmacology/ToxicologyAudentes TherapeuticsSan FranciscoCAUSA
| | - Jianyong Huang
- Nonclinical, Pharmacology/ToxicologyAudentes TherapeuticsSan FranciscoCAUSA
| | | | | | - Carlos Fonck
- Nonclinical, Pharmacology/ToxicologyAudentes TherapeuticsSan FranciscoCAUSA
| | - Hui Meng
- Department of Pathology and Neuroscience Research CenterMedical College of WisconsinMilwaukeeWIUSA
| | - Mariah J Prom
- Department of Pathology and Neuroscience Research CenterMedical College of WisconsinMilwaukeeWIUSA
| | - Michael W Lawlor
- Department of Pathology and Neuroscience Research CenterMedical College of WisconsinMilwaukeeWIUSA
| | - Justine Cunningham
- Nonclinical, Pharmacology/ToxicologyAudentes TherapeuticsSan FranciscoCAUSA
- Present address:
Sana BiotechnologySouth San FranciscoCAUSA
| | - Chanchal Sadhu
- Nonclinical, Pharmacology/ToxicologyAudentes TherapeuticsSan FranciscoCAUSA
| | - Fulvio Mavilio
- Nonclinical, Pharmacology/ToxicologyAudentes TherapeuticsSan FranciscoCAUSA
- Department of Life SciencesUniversity of Modena and Reggio EmiliaModenaItaly
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27
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Fort J, Nicolàs-Aragó A, Palacín M. The Ectodomains of rBAT and 4F2hc Are Fake or Orphan α-Glucosidases. Molecules 2021; 26:6231. [PMID: 34684812 PMCID: PMC8537225 DOI: 10.3390/molecules26206231] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 11/22/2022] Open
Abstract
It is known that 4F2hc and rBAT are the heavy subunits of the heteromeric amino acid transporters (HATs). These heavy subunits are N-glycosylated proteins, with an N-terminal domain, one transmembrane domain and a bulky extracellular domain (ectodomain) that belongs to the α-amylase family. The heavy subunits are covalently linked to a light subunit from the SLC7 family, which is responsible for the amino acid transport activity, forming a heterodimer. The functions of 4F2hc and rBAT are related mainly to the stability and trafficking of the HATs in the plasma membrane of vertebrates, where they exert the transport activity. Moreover, 4F2hc is a modulator of integrin signaling, has a role in cell fusion and it is overexpressed in some types of cancers. On the other hand, some mutations in rBAT are found to cause the malfunctioning of the b0,+ transport system, leading to cystinuria. The ectodomains of 4F2hc and rBAT share both sequence and structure homology with α-amylase family members. Very recently, cryo-EM has revealed the structure of several HATs, including the ectodomains of rBAT and 4F2hc. Here, we analyze available data on the ectodomains of rBAT and 4Fhc and their relationship with the α-amylase family. The physiological relevance of this relationship remains largely unknown.
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Affiliation(s)
- Joana Fort
- Laboratory of Amino Acid Transporters and Disease, Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, 08028 Barcelona, Spain; (A.N.-A.); (M.P.)
- CIBERER (Centro Español en Red de Biomedicina de Enfermedades Raras), 08028 Barcelona, Spain
- Department of Biochemistry and Molecular Biomedicine, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Adrià Nicolàs-Aragó
- Laboratory of Amino Acid Transporters and Disease, Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, 08028 Barcelona, Spain; (A.N.-A.); (M.P.)
| | - Manuel Palacín
- Laboratory of Amino Acid Transporters and Disease, Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology (BIST), Baldiri Reixac 10, 08028 Barcelona, Spain; (A.N.-A.); (M.P.)
- CIBERER (Centro Español en Red de Biomedicina de Enfermedades Raras), 08028 Barcelona, Spain
- Department of Biochemistry and Molecular Biomedicine, Universitat de Barcelona, 08028 Barcelona, Spain
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Bychkov I, Baydakova G, Filatova A, Migiaev O, Marakhonov A, Pechatnikova N, Pomerantseva E, Konovalov F, Ampleeva M, Kaimonov V, Skoblov M, Zakharova E. Complex Transposon Insertion as a Novel Cause of Pompe Disease. Int J Mol Sci 2021; 22:ijms221910887. [PMID: 34639227 PMCID: PMC8509548 DOI: 10.3390/ijms221910887] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/03/2021] [Accepted: 10/06/2021] [Indexed: 11/22/2022] Open
Abstract
Pompe disease (OMIM#232300) is an autosomal recessive lysosomal storage disorder caused by mutations in the GAA gene. According to public mutation databases, more than 679 pathogenic variants have been described in GAA, none of which are associated with mobile genetic elements. In this article, we report a novel molecular genetic cause of Pompe disease, which could be hardly detected using routine molecular genetic analysis. Whole genome sequencing followed by comprehensive functional analysis allowed us to discover and characterize a complex mobile genetic element insertion deep in the intron 15 of the GAA gene in a patient with infantile onset Pompe disease.
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Affiliation(s)
- Igor Bychkov
- Research Centre for Medical Genetics, 115478 Moscow, Russia; (G.B.); (A.F.); (O.M.); (A.M.); (M.S.); (E.Z.)
- Correspondence:
| | - Galina Baydakova
- Research Centre for Medical Genetics, 115478 Moscow, Russia; (G.B.); (A.F.); (O.M.); (A.M.); (M.S.); (E.Z.)
| | - Alexandra Filatova
- Research Centre for Medical Genetics, 115478 Moscow, Russia; (G.B.); (A.F.); (O.M.); (A.M.); (M.S.); (E.Z.)
| | - Ochir Migiaev
- Research Centre for Medical Genetics, 115478 Moscow, Russia; (G.B.); (A.F.); (O.M.); (A.M.); (M.S.); (E.Z.)
| | - Andrey Marakhonov
- Research Centre for Medical Genetics, 115478 Moscow, Russia; (G.B.); (A.F.); (O.M.); (A.M.); (M.S.); (E.Z.)
| | | | - Ekaterina Pomerantseva
- Center of Genetics and Reproductive Medicine GENETICO, JSC, 119333 Moscow, Russia; (E.P.); (V.K.)
| | - Fedor Konovalov
- Independent Clinical Bioinformatics Laboratory, 123181 Moscow, Russia; (F.K.); (M.A.)
| | - Maria Ampleeva
- Independent Clinical Bioinformatics Laboratory, 123181 Moscow, Russia; (F.K.); (M.A.)
| | - Vladimir Kaimonov
- Center of Genetics and Reproductive Medicine GENETICO, JSC, 119333 Moscow, Russia; (E.P.); (V.K.)
| | - Mikhail Skoblov
- Research Centre for Medical Genetics, 115478 Moscow, Russia; (G.B.); (A.F.); (O.M.); (A.M.); (M.S.); (E.Z.)
| | - Ekaterina Zakharova
- Research Centre for Medical Genetics, 115478 Moscow, Russia; (G.B.); (A.F.); (O.M.); (A.M.); (M.S.); (E.Z.)
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29
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Menezes HSG, Nascimento NA, Paiva-Cavalcanti M, da Costa-Latgé SG, Genta FA, Oliveira CM, Romão TP, Silva-Filha MHN. Molecular and biological features of Culex quinquefasciatus homozygous larvae for two cqm1 alleles that confer resistance to Lysinibacillus sphaericus larvicides. Pest Manag Sci 2021; 77:3135-3144. [PMID: 33644981 DOI: 10.1002/ps.6349] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/26/2021] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Culex quinquefasciatus resistance to the binary toxin from Lysinibacillus sphaericus larvicides can occur because of mutations in the cqm1 gene that prevents the expression of the toxin receptor, Cqm1 α-glucosidase. In a resistant laboratory-selected colony maintained for more than 250 generations, cqm1REC and cqm1REC-2 resistance alleles were identified. The major allele initially found, cqm1REC , became minor and was replaced by cqm1REC-2 . This study aimed to investigate the features associated with homozygous larvae for each allele to understand the reasons for the allele replacement and to generate knowledge on resistance to microbial larvicides. RESULTS Homozygous larvae for each allele were compared. Both larvae displayed the same level of resistance to the binary toxin (3500-fold); therefore, a change in phenotype was not the reason for the replacement observed. The lack of Cqm1 expression did not reduce the total specific α-glucosidase activity for homozygous cqm1REC and cqm1REC-2 larvae, which were statistically similar to the susceptible strain, using artificial or natural substrates. The expression of eight Cqm1 paralog α-glucosidases was demonstrated in resistant and susceptible larvae. Bioassays in which cqm1REC or cqm1REC-2 homozygous larvae were reared under stressful conditions showed that most adults produced were cqm1REC-2 homozygous (69%). Comparatively, in the offspring of a heterozygous sub-colony reared under optimal conditions for 20 generations, the cqm1REC allele assumed a higher frequency (0.72). CONCLUSION Homozygous larvae for each allele exhibited a similar resistant phenotype. However, they presented specific advantages that might favor their selection and can be used in designing resistance management practices. © 2021 Society of Chemical Industry.
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Affiliation(s)
| | | | | | - Samara G da Costa-Latgé
- Laboratory of Insect Biochemistry and Physiology, Instituto Oswaldo Cruz-FIOCRUZ, Rio de Janeiro, Brazil
| | - Fernando A Genta
- Laboratory of Insect Biochemistry and Physiology, Instituto Oswaldo Cruz-FIOCRUZ, Rio de Janeiro, Brazil
| | | | - Tatiany P Romão
- Department of Entomology, Instituto Aggeu Magalhães-FIOCRUZ, Recife, Brazil
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30
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Wang J, Zhou CJ, Khodabukus A, Tran S, Han SO, Carlson AL, Madden L, Kishnani PS, Koeberl DD, Bursac N. Three-dimensional tissue-engineered human skeletal muscle model of Pompe disease. Commun Biol 2021; 4:524. [PMID: 33953320 PMCID: PMC8100136 DOI: 10.1038/s42003-021-02059-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 03/31/2021] [Indexed: 01/24/2023] Open
Abstract
In Pompe disease, the deficiency of the lysosomal enzyme acid alpha-glucosidase (GAA) causes skeletal and cardiac muscle weakness, respiratory failure, and premature death. While enzyme replacement therapy using recombinant human GAA (rhGAA) can significantly improve patient outcomes, detailed disease mechanisms and incomplete therapeutic effects require further studies. Here we report a three-dimensional primary human skeletal muscle ("myobundle") model of infantile-onset Pompe disease (IOPD) that recapitulates hallmark pathological features including reduced GAA enzyme activity, elevated glycogen content and lysosome abundance, and increased sensitivity of muscle contractile function to metabolic stress. In vitro treatment of IOPD myobundles with rhGAA or adeno-associated virus (AAV)-mediated hGAA expression yields increased GAA activity and robust glycogen clearance, but no improvements in stress-induced functional deficits. We also apply RNA sequencing analysis to the quadriceps of untreated and AAV-treated GAA-/- mice and wild-type controls to establish a Pompe disease-specific transcriptional signature and reveal novel disease pathways. The mouse-derived signature is enriched in the transcriptomic profile of IOPD vs. healthy myobundles and partially reversed by in vitro rhGAA treatment, further confirming the utility of the human myobundle model for studies of Pompe disease and therapy.
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Affiliation(s)
- Jason Wang
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Chris J Zhou
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | | | - Sabrina Tran
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Sang-Oh Han
- Division of Medical Genetics, Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Aaron L Carlson
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Lauran Madden
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Priya S Kishnani
- Division of Medical Genetics, Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Dwight D Koeberl
- Division of Medical Genetics, Department of Pediatrics, Duke University School of Medicine, Durham, NC, USA
| | - Nenad Bursac
- Department of Biomedical Engineering, Duke University, Durham, NC, USA.
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31
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Bergsma AJ, In 't Groen SLM, Catalano F, Yamanaka M, Takahashi S, Okumiya T, van der Ploeg AT, Pijnappel WWMP. A generic assay for the identification of splicing variants that induce nonsense-mediated decay in Pompe disease. Eur J Hum Genet 2021; 29:422-433. [PMID: 33168984 PMCID: PMC7940403 DOI: 10.1038/s41431-020-00751-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 09/10/2020] [Accepted: 10/20/2020] [Indexed: 01/09/2023] Open
Abstract
DNA variants affecting mRNA expression and processing in genetic diseases are often missed or poorly characterized. We previously reported a generic assay to identify variants that affect mRNA expression and splicing in Pompe disease, a monogenic disorder caused by deficiency of acid α-glucosidase (GAA). However, this assay could miss mRNA that is subjected to degradation. Here, we inhibited mRNA degradation using cycloheximide and performed unbiased splicing analysis of all GAA exons using exon flanking RT-PCR and exon internal RT-qPCR. In four patients that were suspected of harboring splicing variants but for which aberrant splicing could not be detected in normally growing cells, we detected a total of 10 novel splicing events in cells treated with cycloheximide. In addition, we found that sequences of GAA introns 6 and 12 were naturally included in a subset of transcripts from patients and healthy controls, indicating inefficient canonical splicing. Identification of aberrant splicing caused by the common Asian variant c.546G>T allowed the development of an antisense oligonucleotide that promoted canonical GAA pre-mRNA splicing and elevated GAA enzymatic activity. Our results indicate that this extended generic splicing assay allows the detection of aberrant splicing in cases of mRNA degradation to enable functional analysis of unknown splicing variants and the development of targeted treatment options.
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Affiliation(s)
- Atze J Bergsma
- Department of Clinical Genetics, Erasmus MC Medical Center, Rotterdam, Netherlands.
- Department of Pediatrics, Erasmus MC Medical Center, Rotterdam, Netherlands.
- Center for Lysosomal and Metabolic Diseases, Erasmus MC Medical Center, Rotterdam, Netherlands.
| | - Stijn L M In 't Groen
- Department of Clinical Genetics, Erasmus MC Medical Center, Rotterdam, Netherlands
- Department of Pediatrics, Erasmus MC Medical Center, Rotterdam, Netherlands
- Center for Lysosomal and Metabolic Diseases, Erasmus MC Medical Center, Rotterdam, Netherlands
| | - Fabio Catalano
- Department of Clinical Genetics, Erasmus MC Medical Center, Rotterdam, Netherlands
- Department of Pediatrics, Erasmus MC Medical Center, Rotterdam, Netherlands
- Center for Lysosomal and Metabolic Diseases, Erasmus MC Medical Center, Rotterdam, Netherlands
| | - Manjiro Yamanaka
- Department of Clinical Genetics, Erasmus MC Medical Center, Rotterdam, Netherlands
- Department of Laboratory Medicine, Shinshu University Hospital, Nagano, Japan
| | - Satoru Takahashi
- Department of Pediatrics, Asahikawa Medical University, Hokkaido, Japan
| | - Toshika Okumiya
- Department of Biomedical Laboratory Sciences, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Ans T van der Ploeg
- Department of Pediatrics, Erasmus MC Medical Center, Rotterdam, Netherlands
- Center for Lysosomal and Metabolic Diseases, Erasmus MC Medical Center, Rotterdam, Netherlands
| | - W W M Pim Pijnappel
- Department of Clinical Genetics, Erasmus MC Medical Center, Rotterdam, Netherlands.
- Department of Pediatrics, Erasmus MC Medical Center, Rotterdam, Netherlands.
- Center for Lysosomal and Metabolic Diseases, Erasmus MC Medical Center, Rotterdam, Netherlands.
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Mehrabi M, Esmaeili S, Ezati M, Abassi M, Rasouli H, Nazari D, Adibi H, Khodarahmi R. Antioxidant and glycohydrolase inhibitory behavior of curcumin-based compounds: Synthesis and evaluation of anti-diabetic properties in vitro. Bioorg Chem 2021; 110:104720. [PMID: 33662896 DOI: 10.1016/j.bioorg.2021.104720] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/17/2021] [Accepted: 02/02/2021] [Indexed: 02/02/2023]
Abstract
Naturally occurring anti-diabetic compound curcumin can prevent diabetes complications due to antioxidant and anti-inflammatory properties as well as the attenuation of postprandial hyperglycemia. In this line, we have synthesized thirteen curcumin based derivatives (L1-L13) by multi-component reaction, characterized by IR, 1HNMR, 13C NMR, MS, elemental analysis and evaluated for possible antioxidant properties and α-glucosidase (α-Glu) and α-amylase (α-Amy) inhibitory potential. The curcumin-based pyrano[2,3-d]pyrimidine derivatives could inhibit α-Glu and α-Amy enzyme activity which showed desirable antioxidant activity. Furthermore, among the series, L5, L12, L9, L10, L8 and L11 were identified as more potent inhibitors of α-Glu enzyme than curcumin and the compounds of L12, L4, L9, L5, L10, L8, L13, and L11 were the stronger inhibitors of the α-Amy enzyme in vitro. Besides, among them, L12 had the lowest IC50 for the inhibition of both enzymes. Since strong inhibitors for pancreatic α-Amy result in the progression of severe gastrointestinal side effects, the inhibitors that show the lower α-Amy/α-Glu inhibitory ratio have attracted much attention in medicinal chemistry. Besides, considering antioxidant characteristics of synthesized compounds, the L7 derivative with the highest antioxidant activity and the lowest "α-Amy/α-Glu inhibitory" ratio could be an appropriate candidate for further study through the rational drug design to the exploration of a new class of powerful anti-diabetic drugs.
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Affiliation(s)
- Maryam Mehrabi
- Department of Biology, Faculty of Sciences, Razi University, Kermanshah, Iran
| | - Sajjad Esmaeili
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Ezati
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Maryam Abassi
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Hassan Rasouli
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Soil and Water Research Institute (SWRI), Karaj, Iran; National Institute of Genetic Engineering and Plant Biotechnology (NIGEB), Karaj, Iran
| | - Donya Nazari
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Hadi Adibi
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Reza Khodarahmi
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Department of Pharmacognosy and Biotechnology, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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Gharesouran J, Jalaiei A, Hosseinzadeh A, Ghafouri-Fard S, Mokhtari Z, Ghahremanzadeh K, Rezazadeh N, Shiva S, Sadeghvand S, Taheri M, Rezazadeh M. GAA gene mutation detection following clinical evaluation and enzyme activity analysis in Azeri Turkish patients with Pompe disease. Metab Brain Dis 2020; 35:1127-1134. [PMID: 32504392 DOI: 10.1007/s11011-020-00586-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 06/01/2020] [Indexed: 10/24/2022]
Abstract
Pompe disease (PD) is a rare autosomal recessive multi-systemic lysosomal storage disorder, caused by mutations in the acid alpha-glucosidase (GAA) gene located on 17q25.2-q25.3. It is one of about 50 rare genetic diseases categorized as lysosomal storage disorders. This disease is characterized by a range of different symptoms related to acid alpha-glucosidase deficiency. Mutation recognition in the GAA gene can be very significant for purposes such as therapeutic interference, early diagnosis and genotype-phenotype relationship. In the current study, peripheral blood samples were gathered from patients with PD and healthy members of three families. Enzymatic activity of GAA was checked. Then, mutation detection was performed by polymerase chain reaction followed by direct sequencing of all exons in samples with decreased enzyme activity. The identified mutations were investigated using bioinformatics tools to predict possible effects on the protein product and also to compare the mutated sequence with near species. Three novel mutations (c.1966-1968delGAG, c.2011-2012delAT and c.1475-1481dupACCCCAC) were identified in the GAA gene. Assessment of the effects of these mutations on protein structure and function showed the possibility of harmful effects and their significant alterations in the protein structure. The three novel GAA gene mutations detected in this study expand the information about the molecular genetics of PD and can be used to helpdiagnosis and genetic counseling of affected families.
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Affiliation(s)
- Jalal Gharesouran
- Molecular Genetics Division, GMG center, Tabriz, Iran
- Division of Medical Genetics, Tabriz Children's Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Abbas Jalaiei
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Aida Hosseinzadeh
- Molecular Genetics Division, GMG center, Tabriz, Iran
- Division of Medical Genetics, Tabriz Children's Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zeinab Mokhtari
- Alzahra Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Narges Rezazadeh
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Shadi Shiva
- Pediatric Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shahram Sadeghvand
- Pediatric Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Taheri
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Maryam Rezazadeh
- Division of Medical Genetics, Tabriz Children's Hospital, Tabriz University of Medical Sciences, Tabriz, Iran.
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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Park D, Barka GD, Yang EY, Cho MC, Yoon JB, Lee J. Identification of QTLs Controlling α-Glucosidase Inhibitory Activity in Pepper ( Capsicum annuum L.) Leaf and Fruit Using Genotyping-by-Sequencing Analysis. Genes (Basel) 2020; 11:E1116. [PMID: 32977701 PMCID: PMC7650571 DOI: 10.3390/genes11101116] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/19/2020] [Accepted: 09/21/2020] [Indexed: 01/14/2023] Open
Abstract
Diabetes mellitus, a group of metabolic disorders characterized by hyperglycemia, is one of the most serious and common diseases around the world and is associated with major complications such as diabetic neuropathy, retinopathy, and cardiovascular diseases. A widely used treatment for non-insulin-dependent diabetes is α-glucosidase inhibitors (AGIs) such as acarbose, which hinders hydrolytic cleavage of disaccharides and retard glucose absorption. The ability to inhibit α-glucosidase activity has been reported in leaf and fruit of pepper (Capsicum annuum L.). In this study, we aimed to identify quantitative trait loci (QTLs) controlling α-glucosidase inhibitory activity (AGI activity) in pepper leaf and fruit using enzyme assay and genotyping-by-sequencing (GBS) analysis. The AGI activity at three stages of leaf and one stage of fruit development was analyzed by 96 F2 individuals. GBS analysis identified 17,427 SNPs that were subjected to pepper genetic linkage map construction. The map, consisting of 763 SNPs, contained 12 linkage groups with a total genetic distance of 2379 cM. QTL analysis revealed seven QTLs (qAGI1.1, qAGI11.1, qAGI5.1, qAGI9.1, qAGI12.1, qAGI5.2, and qAGI12.2) controlling AGI activity in pepper leaf and fruit. The QTLs for AGI activity varied by plant age and organ. This QTL information is expected to provide a significant contribution to developing pepper varieties with high AGI activity.
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Affiliation(s)
- Doie Park
- Department of Horticulture, Institute of Agricultural Science & Technology, Jeonbuk National University, Jeonju 54896, Korea; (D.P.); (G.D.B.)
| | - Geleta Dugassa Barka
- Department of Horticulture, Institute of Agricultural Science & Technology, Jeonbuk National University, Jeonju 54896, Korea; (D.P.); (G.D.B.)
| | - Eun-Young Yang
- Vegetable Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju 55365, Korea; (E.-Y.Y.); (M.-C.C.)
| | - Myeong-Cheoul Cho
- Vegetable Research Division, National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju 55365, Korea; (E.-Y.Y.); (M.-C.C.)
| | - Jae Bok Yoon
- Research and Development Unit, Pepper and Breeding Institute, K-Seed Valley, Gimje 54324, Korea;
| | - Jundae Lee
- Department of Horticulture, Institute of Agricultural Science & Technology, Jeonbuk National University, Jeonju 54896, Korea; (D.P.); (G.D.B.)
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Abstract
Pompe disease, also known as glycogen storage disease type II, is caused by the lack or deficiency of a single enzyme, lysosomal acid alpha-glucosidase, leading to severe cardiac and skeletal muscle myopathy due to progressive accumulation of glycogen. The discovery that acid alpha-glucosidase resides in the lysosome gave rise to the concept of lysosomal storage diseases, and Pompe disease became the first among many monogenic diseases caused by loss of lysosomal enzyme activities. The only disease-specific treatment available for Pompe disease patients is enzyme replacement therapy (ERT) which aims to halt the natural course of the illness. Both the success and limitations of ERT provided novel insights in the pathophysiology of the disease and motivated the scientific community to develop the next generation of therapies that have already progressed to the clinic.
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Affiliation(s)
| | - Nina Raben
- Cell and Developmental Biology Center, National Heart, Lung, and Blood Institute, NIH, Bethesda, MD 20892, USA;
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36
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Dong YS, Yu N, Li X, Zhang B, Xing Y, Zhuang C, Xiu ZL. Dietary 5,6,7-Trihydroxy-flavonoid Aglycones and 1-Deoxynojirimycin Synergistically Inhibit the Recombinant Maltase-Glucoamylase Subunit of α-Glucosidase and Lower Postprandial Blood Glucose. J Agric Food Chem 2020; 68:8774-8787. [PMID: 32806121 DOI: 10.1021/acs.jafc.0c01668] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
1-Deoxynojirimycin (1-DNJ) is the major effective component of mulberry leaves, exhibiting inhibitory activity against α-glucosidase. However, due to the low content of 1-DNJ in mulberry products, its level cannot meet the lowest dose to exhibit its activity. In this study, a combination of dietary 5,6,7-trihydroxy-flavonoid aglycones with 1-DNJ showed synergistic inhibitory activity against maltase of mice α-glucosidase and recombinant C- and N-termini of maltase-glucoamylase (MGAM) and baicalein with 1-DNJ exhibited the strongest synergistic effect. The synergistic effect of the combination was also confirmed by the maltose tolerance test in vivo. Enzyme kinetics, molecular docking, fluorescence spectrum, and circular dichroism spectrometry studies indicated that the major mechanism of the synergism is that baicalein was a positive allosteric inhibitor and bound to the noncompetitive site of MGAM, causing an increase of the binding affinity of 1-DNJ to MGAM. Our results might provide a theoretical basis for the design of dietary supplements containing mulberry products.
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Affiliation(s)
- Yue-Sheng Dong
- School of Bioengineering, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Na Yu
- School of Bioengineering, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Xia Li
- School of Bioengineering, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Bowei Zhang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Yan Xing
- School of Bioengineering, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Chunlin Zhuang
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
- School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China
| | - Zhi-Long Xiu
- School of Bioengineering, Dalian University of Technology, Dalian 116024, Liaoning, China
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Chen Y, An X, Zhao D, Li E, Ma R, Li Z, Cheng C. Transcription profiles reveal sugar and hormone signaling pathways mediating tree branch architecture in apple (Malus domestica Borkh.) grafted on different rootstocks. PLoS One 2020; 15:e0236530. [PMID: 32706831 PMCID: PMC7380599 DOI: 10.1371/journal.pone.0236530] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 07/07/2020] [Indexed: 11/23/2022] Open
Abstract
Apple trees grafted on different rootstock types, including vigorous rootstock (VR), dwarfing interstock (DIR), and dwarfing self-rootstock (DSR), are widely planted in production, but the molecular determinants of tree branch architecture growth regulation induced by rootstocks are still not well known. In this study, the branch growth phenotypes of three combinations of ‘Fuji’ apple trees grafted on different rootstocks (VR: Malus baccata; DIR: Malus baccata/T337; DSR: T337) were investigated. The VR trees presented the biggest branch architecture. The results showed that the sugar content, sugar metabolism-related enzyme activities, and hormone content all presented obvious differences in the tender leaves and buds of apple trees grafted on these rootstocks. Transcriptomic profiles of the tender leaves adjacent to the top buds allowed us to identify genes that were potentially involved in signaling pathways that mediate the regulatory mechanisms underlying growth differences. In total, 3610 differentially expressed genes (DEGs) were identified through pairwise comparisons. The screened data suggested that sugar metabolism-related genes and complex hormone regulatory networks involved the auxin (IAA), cytokinin (CK), abscisic acid (ABA) and gibberellic acid (GA) pathways, as well as several transcription factors, participated in the complicated growth induction process. Overall, this study provides a framework for analysis of the molecular mechanisms underlying differential tree branch growth of apple trees grafted on different rootstocks.
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Affiliation(s)
- Yanhui Chen
- Key Laboratory of Mineral Nutrition and Efficient Fertilization for Deciduous Fruits, Liaoning Province, Key Laboratory of Fruit Germplasm Resources Utilization, Ministry of Agriculture, Institute of Pomology, Chinese Academy of Agricultrual Sciences, Xingcheng, Liaoning, P. R. China
| | - Xiuhong An
- Key Laboratory of Mineral Nutrition and Efficient Fertilization for Deciduous Fruits, Liaoning Province, Key Laboratory of Fruit Germplasm Resources Utilization, Ministry of Agriculture, Institute of Pomology, Chinese Academy of Agricultrual Sciences, Xingcheng, Liaoning, P. R. China
| | - Deying Zhao
- Key Laboratory of Mineral Nutrition and Efficient Fertilization for Deciduous Fruits, Liaoning Province, Key Laboratory of Fruit Germplasm Resources Utilization, Ministry of Agriculture, Institute of Pomology, Chinese Academy of Agricultrual Sciences, Xingcheng, Liaoning, P. R. China
| | - Enmao Li
- Key Laboratory of Mineral Nutrition and Efficient Fertilization for Deciduous Fruits, Liaoning Province, Key Laboratory of Fruit Germplasm Resources Utilization, Ministry of Agriculture, Institute of Pomology, Chinese Academy of Agricultrual Sciences, Xingcheng, Liaoning, P. R. China
| | - Renpeng Ma
- Key Laboratory of Mineral Nutrition and Efficient Fertilization for Deciduous Fruits, Liaoning Province, Key Laboratory of Fruit Germplasm Resources Utilization, Ministry of Agriculture, Institute of Pomology, Chinese Academy of Agricultrual Sciences, Xingcheng, Liaoning, P. R. China
| | - Zhuang Li
- Key Laboratory of Mineral Nutrition and Efficient Fertilization for Deciduous Fruits, Liaoning Province, Key Laboratory of Fruit Germplasm Resources Utilization, Ministry of Agriculture, Institute of Pomology, Chinese Academy of Agricultrual Sciences, Xingcheng, Liaoning, P. R. China
| | - Cungang Cheng
- Key Laboratory of Mineral Nutrition and Efficient Fertilization for Deciduous Fruits, Liaoning Province, Key Laboratory of Fruit Germplasm Resources Utilization, Ministry of Agriculture, Institute of Pomology, Chinese Academy of Agricultrual Sciences, Xingcheng, Liaoning, P. R. China
- * E-mail:
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Huang JY, Kan SH, Sandfeld EK, Dalton ND, Rangel AD, Chan Y, Davis-Turak J, Neumann J, Wang RY. CRISPR-Cas9 generated Pompe knock-in murine model exhibits early-onset hypertrophic cardiomyopathy and skeletal muscle weakness. Sci Rep 2020; 10:10321. [PMID: 32587263 PMCID: PMC7316971 DOI: 10.1038/s41598-020-65259-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 04/27/2020] [Indexed: 12/26/2022] Open
Abstract
Infantile-onset Pompe Disease (IOPD), caused by mutations in lysosomal acid alpha-glucosidase (Gaa), manifests rapidly progressive fatal cardiac and skeletal myopathy incompletely attenuated by synthetic GAA intravenous infusions. The currently available murine model does not fully simulate human IOPD, displaying skeletal myopathy with late-onset hypertrophic cardiomyopathy. Bearing a Cre-LoxP induced exonic disruption of the murine Gaa gene, this model is also not amenable to genome-editing based therapeutic approaches. We report the early onset of severe hypertrophic cardiomyopathy in a novel murine IOPD model generated utilizing CRISPR-Cas9 homology-directed recombination to harbor the orthologous Gaa mutation c.1826dupA (p.Y609*), which causes human IOPD. We demonstrate the dual sgRNA approach with a single-stranded oligonucleotide donor is highly specific for the Gaac.1826 locus without genomic off-target effects or rearrangements. Cardiac and skeletal muscle were deficient in Gaa mRNA and enzymatic activity and accumulated high levels of glycogen. The mice demonstrated skeletal muscle weakness but did not experience early mortality. Altogether, these results demonstrate that the CRISPR-Cas9 generated Gaac.1826dupA murine model recapitulates hypertrophic cardiomyopathy and skeletal muscle weakness of human IOPD, indicating its utility for evaluation of novel therapeutics.
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Affiliation(s)
| | - Shih-Hsin Kan
- CHOC Children's Research Institute, Orange, CA, 92868, USA
| | | | - Nancy D Dalton
- Department of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | | | - Yunghang Chan
- Department of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | | | - Jon Neumann
- Transgenic Mouse Facility, University of California Irvine, Irvine, CA, 92697, USA
| | - Raymond Y Wang
- Department of Pediatrics, University of California-Irvine School of Medicine, Irvine, CA, 92697, USA
- Division of Metabolic Disorders, CHOC Children's Specialists, Orange, CA, 92868, USA
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Su L, Yang Y, Wu J. Recombinant expression, characterization and application of maltotetraohydrolase from Pseudomonas saccharophila. J Sci Food Agric 2020; 100:3456-3464. [PMID: 32167164 DOI: 10.1002/jsfa.10381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 12/03/2019] [Accepted: 03/13/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND Maltotetraohydrolase, widely used in food and medical fields, possesses the ability to hydrolyze starch to produce maltooligosaccharides with maltotetraose as the main product. It also has the potential usage in delaying bread aging. RESULTS Pseudomonas saccharophila maltotetraohydrolase was expressed in Bacillus subtilis WS11. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis revealed obvious bands at 57 kDa (maltotetraohydrolase I) and 47 kDa (maltotetraohydrolase II). Both showed similar enzymatic properties, although the catalytic efficiency of maltotetraohydrolase I was 4.93 fold higher than that of maltotetraohydrolase II using soluble starch as substrate. In addition, the maltotetraohydrolase production was further scaled up in a 3-L fermentor, and the highest activity reached 1907 U mL-1 . Then, the recombinant maltotetraohydrolase was used to produce maltotetraose. The maltotetraose yields catalyzed by maltotetraohydrolase I and II reached 73.2% and 69.7%, respectively. Finally, when recombinant maltotetraohydrolase was used in bread-making, texture profile analysis of the bread indicated recombinant maltotetraohydrolase I exhibited a significant anti-aging effect. CONCLUSION This is the first describing high-efficient expression of P. saccharophila maltotetraohydrolase in the food safety strain B. subtilis, and the yield represented the highest level ever reported. Excellent results were also obtained with respect to the preparation of maltotetraose and delaying bread aging using the recombinant maltotetraohydrolase. The present study will help lay the foundation for the industrial production and application of maltotetraohydrolase. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Lingqia Su
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, Wuxi, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
| | - Yanan Yang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, Wuxi, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
| | - Jing Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- School of Biotechnology and Key Laboratory of Industrial Biotechnology Ministry of Education, Jiangnan University, Wuxi, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
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Belfiore MP, Iacobellis F, Acampora E, Caiazza M, Rubino M, Monda E, Magaldi MR, Tarallo A, Sasso M, De Pasquale V, Grassi R, Cappabianca S, Calabrò P, Fecarotta S, Esposito S, Esposito G, Pisani A, Pavone LM, Parenti G, Limongelli G. Aortopathies in mouse models of Pompe, Fabry and Mucopolysaccharidosis IIIB lysosomal storage diseases. PLoS One 2020; 15:e0233050. [PMID: 32428018 PMCID: PMC7236983 DOI: 10.1371/journal.pone.0233050] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 04/27/2020] [Indexed: 12/16/2022] Open
Abstract
Introduction Lysosomal storage diseases (LSDs) are rare inherited metabolic diseases characterized by an abnormal accumulation of various toxic materials in the cells as a result of enzyme deficiencies leading to tissue and organ damage. Among clinical manifestations, cardiac diseases are particularly important in Pompe glycogen storage diseases (PD), in glycosphingolipidosis Fabry disease (FD), and mucopolysaccharidoses (MPS). Here, we evaluated the occurrence of aortopathy in knock out (KO) mouse models of three different LSDs, including PD, FD, and MPS IIIB. Methods We measured the aortic diameters in 15 KO male mice, 5 for each LSD: 5 GLA-/- mice for FD, 5 NAGLU-/- mice for MPS IIIB, 5 GAA-/- mice for PD, and 15 wild type (WT) mice: 5 for each strain. In order to compare the aortic parameters between KO and WT mice deriving from the same colonies, different diameters were echocardiographically measured: aortic annulus, aortic sinus, sino-tubular junction, ascending aorta, aortic arch and descending aorta. Storage material content and aortic defects of the KO mice were also analyzed by histology, when available. Results Compared to their correspondent WT mice: GAA-/- mice showed greater diameters of ascending aorta (1.61mm vs. 1.11mm, p-value = 0.01) and descending aorta (1.17mm vs 1.02mm, p-value 0.04); GLA-/- mice showed greater diameters of aortic annulus (1.35mm vs. 1.22mm, p-value = 0.01), sinus of Valsalva (1.6mm vs. 1.38mm, p-value<0.01), ascending aorta (1.57mm vs. 1.34mm, p-value<0.01), aortic arch (1.36mm vs. 1.22mm, p-value = 0.03) and descending aorta (1.29mm vs. 1.11mm, p-value<0.01); NAGLU-/- mice showed greater diameters of sinus of Valsalva (1.46mm vs. 1.31mm, p-value = 0.05), ascending aorta (1.42mm vs. 1.29mm, p-value<0.01), aortic arch (1.34mm vs. 1.28mm, p-value<0.01) and descending aorta (1.18mm vs. 1.1mm, p-value 0.01). Conclusions We evaluated for the first time the aortic diameters in 3 LSD mouse models and identified different aortopathy patterns, in concordance with recent human findings. Our results are relevant in view of using KO mouse models for efficiently testing the efficacy of new therapies on distinct cardiovascular aspects of LSDs.
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Affiliation(s)
| | | | - Emma Acampora
- Department of Translational Medical Sciences, Federico II University, Naples, Italy
| | - Martina Caiazza
- Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Marta Rubino
- Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Emanuele Monda
- Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Maria Rosaria Magaldi
- Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Antonietta Tarallo
- Department of Translational Medical Sciences, Federico II University, Naples, Italy
| | - Marcella Sasso
- Department of Translational Medical Sciences, Federico II University, Naples, Italy
| | - Valeria De Pasquale
- Department of Molecular Medicine and Medical Biotechnology, Federico II University, Naples, Italy
| | - Roberto Grassi
- Department of Radiology, University of Campania "L. Vanvitelli", Naples, Italy
| | | | - Paolo Calabrò
- Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Simona Fecarotta
- Department of Translational Medical Sciences, Federico II University, Naples, Italy
| | | | - Giovanni Esposito
- Department of Translational Medical Sciences, Federico II University, Naples, Italy
| | - Antonio Pisani
- Department of Translational Medical Sciences, Federico II University, Naples, Italy
| | - Luigi Michele Pavone
- Department of Molecular Medicine and Medical Biotechnology, Federico II University, Naples, Italy
| | - Giancarlo Parenti
- Department of Translational Medical Sciences, Federico II University, Naples, Italy
| | - Giuseppe Limongelli
- Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
- Institute of Cardiovascular Sciences, University College of London and St. Bartholomew's Hospital, London, United Kingdom
- * E-mail:
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Häuser F, Gökce S, Werner G, Danckwardt S, Sollfrank S, Neukirch C, Beyer V, Hennermann JB, Lackner KJ, Mengel E, Rossmann H. A non-invasive diagnostic assay for rapid detection and characterization of aberrant mRNA-splicing by nonsense mediated decay inhibition. Mol Genet Metab 2020; 130:27-35. [PMID: 32222271 DOI: 10.1016/j.ymgme.2020.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 03/05/2020] [Accepted: 03/10/2020] [Indexed: 02/09/2023]
Abstract
BACKGROUND Interpretation of genetic variants detected by sequencing of genomic DNA, which may cause splicing defects, regularly requires mRNA analysis. Usually, only bioinformatic testing is provided, because simple and non-invasive assay protocols are lacking. Furthermore, the detection of mis-splicing is often hampered by nonsense mediated mRNA decay (NMD). METHODS Starting from a case of Pompe disease with two potential splicing variants an assay for the analysis of splice defects in general was developed. We analyzed the transcripts from the gene of interest by standard methods after short-term culture of the patient's lymphocytes in the presence and absence of a NMD inhibitor. Variant and wild type transcript expression were quantified by allele specific PCR in the patient and both parents and the expression ratio with/without NMD inhibition was calculated for each transcript. RESULTS NMD detection in lymphocytes was optimized and evaluated by analyzing a naturally occurring NMD transcript. Several compounds inhibited NMD successfully, including potential therapeutic agents. Sample storage for up to 4 days at room temperature prior to lymphocyte isolation did not affect results. In a proof of concept we identified two candidate variants as severe splicing variants in a patient with Pompe disease, but the strategy can also be used to screen for any mis-spliced transcripts prone to NMD. CONCLUSIONS We developed a simple, non-invasive assay for the detection and characterization of potential splicing variants. This is essential, because early and near-term diagnosis and disease classification is required to facilitate therapy in many genetic diseases.
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Affiliation(s)
- Friederike Häuser
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Seyfullah Gökce
- Center for Pediatric and Adolescent Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Gesa Werner
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Sven Danckwardt
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Stefanie Sollfrank
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Carolin Neukirch
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Vera Beyer
- Institute of Human Genetics, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Julia B Hennermann
- Center for Pediatric and Adolescent Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Karl J Lackner
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Eugen Mengel
- Center for Pediatric and Adolescent Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
| | - Heidi Rossmann
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany.
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Punnatin P, Chanchao C, Chunsrivirot S. Molecular dynamics reveals insight into how N226P and H227Y mutations affect maltose binding in the active site of α-glucosidase II from European honeybee, Apis mellifera. PLoS One 2020; 15:e0229734. [PMID: 32126122 PMCID: PMC7053764 DOI: 10.1371/journal.pone.0229734] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 02/12/2020] [Indexed: 11/19/2022] Open
Abstract
European honeybee, Apis mellifera, produces α-glucosidase (HBGase) that catalyzes the cleavage of an α-glycosidic bond of the non-reducing end of polysaccharides and has potential applications for malt hydrolysis in brewing industry. Characterized by their substrate specificities, HBGases have three isoforms including HBGase II, which prefers maltose to sucrose as a substrate. Previous study found that the catalytic efficiency of maltose hydrolysis of N226P mutant of HBGase II was higher than that of the wild type (WT), and the catalytic efficiency of maltose hydrolysis of WT was higher than those of H227Y and N226P-H227Y mutants. We hypothesized that N226P mutation probably caused maltose to bind with better affinity and position/orientation for hydrolysis than WT, while H227Y and N226P-H227Y mutations caused maltose to bind with worse affinity and position/orientation for hydrolysis than WT. Using this hypothesis, we performed molecular dynamics on the catalytically competent binding conformations of maltose/WT, maltose/N226P, maltose/H227Y, and maltose/N226P-H227Y complexes to elucidate effects of N226P and H227Y mutations on maltose binding in HBGase II active site. Our results reasonably support this hypothesis because the N226P mutant had better binding affinity, higher number of important binding residues, strong and medium hydrogen bonds as well as shorter distance between atoms necessary for hydrolysis than WT, while the H227Y and N226P-H227Y mutants had worse binding affinities, lower number of important binding residues and strong hydrogen bonds as well as longer distances between atoms necessary for hydrolysis than WT. Moreover, results of binding free energy and hydrogen bond interaction of residue 227 support the role of H227 as a maltose preference residue, as proposed by previous studies. Our study provides important and novel insight into how N226P and H227Y mutations affect maltose binding in HBGase II active site. This knowledge could potentially be used to engineer HBGase II to improve its efficiency.
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Affiliation(s)
- Panachai Punnatin
- Faculty of Science, Department of Biology, Chulalongkorn University, Pathumwan, Bangkok, Thailand
- Faculty of Science, Structural and Computational Biology Research Unit, Department of Biochemistry, Chulalongkorn University, Pathumwan, Bangkok, Thailand
| | - Chanpen Chanchao
- Faculty of Science, Department of Biology, Chulalongkorn University, Pathumwan, Bangkok, Thailand
| | - Surasak Chunsrivirot
- Faculty of Science, Structural and Computational Biology Research Unit, Department of Biochemistry, Chulalongkorn University, Pathumwan, Bangkok, Thailand
- Faculty of Science, Department of Biochemistry, Chulalongkorn University, Pathumwan, Bangkok, Thailand
- * E-mail:
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Kojima Y, Honda C, Kobayashi I, Katsuta R, Matsumura S, Wagatsuma I, Takehisa M, Shindo H, Hosaka M, Nukada T, Tokuoka M. Transglycosylation Forms Novel Glycoside Ethyl α-Maltoside and Ethyl α-Isomaltoside in Sake during the Brewing Process by α-Glucosidase A of Aspergillus oryzae. J Agric Food Chem 2020; 68:1419-1426. [PMID: 31888328 DOI: 10.1021/acs.jafc.9b06936] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Sake, the Japanese rice wine, contains a variety of oligosaccharides and glucosides produced by fungal enzymes during the brewing process. This study investigates the effect of knocking out the Aspergillus oryzae α-glucosidase (agdA) gene on the transglycosylation products in brewed sake. In addition to α-ethyl glucoside and α-glyceryl glucoside, the amount of two compounds that have molecular mass values similar to that of ethyl maltose decreased by agdA gene knockout. Both compounds were synthesized, in vitro, from maltose and ethanol with purified agdA. Nuclear magnetic resonance analysis identified the two compounds as ethyl α-maltoside and ethyl α-isomaltoside, respectively, which are novel compounds in sake as well as in the natural environment. Quantitative analysis of 111 commercially available types of sake showed that these novel compounds were widely present at concentrations of several hundred mg/L, suggesting that both of them are ones of the common glycosides in sake.
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Han SO, Haynes AC, Li S, Abraham DM, Kishnani PS, Steet R, Koeberl DD. Evaluation of antihypertensive drugs in combination with enzyme replacement therapy in mice with Pompe disease. Mol Genet Metab 2020; 129:73-79. [PMID: 31645300 PMCID: PMC7002209 DOI: 10.1016/j.ymgme.2019.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/01/2019] [Accepted: 10/01/2019] [Indexed: 12/22/2022]
Abstract
UNLABELLED Pompe disease is caused by the deficiency of lysosomal acid α-glucosidase (GAA) leading to progressive myopathy. Enzyme replacement therapy (ERT) with recombinant human (rh) GAA has limitations, including inefficient uptake of rhGAA in skeletal muscle linked to low cation-independent mannose-6-phosphate receptor (CI-MPR) expression. PURPOSE To test the hypothesis that antihypertensive agents causing muscle hypertrophy by increasing insulin-like growth factor 1 expression can increase CI-MPR-mediated uptake of recombinant enzyme with therapeutic effects in skeletal muscle. METHODS Three such agents were evaluated in mice with Pompe disease (carvedilol, losartan, and propranolol), either with or without concurrent ERT. RESULTS Carvedilol, a selective β-blocker, increased muscle strength but reduced biochemical correction from ERT. Administration of drugs alone had minimal effect, with the exception of losartan that increased glycogen storage and mortality either by itself or in combination with ERT. CONCLUSION The β-blocker carvedilol had beneficial effects during ERT in mice with Pompe disease, in comparison with propranolol or losartan. Caution is warranted when prescribing antihypertensive drugs in Pompe disease.
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Affiliation(s)
- Sang-Oh Han
- Division of Medical Genetics, Department of Pediatrics, Duke University School of Medicine, Durham, NC, United States of America
| | - Alexina C Haynes
- Biochemistry and Molecular Biology, Complex Carbohydrate Research Center, University of Georgia, Athens, GA, United States of America
| | - Songtao Li
- Division of Medical Genetics, Department of Pediatrics, Duke University School of Medicine, Durham, NC, United States of America
| | - Dennis M Abraham
- Division of Cardiology, Department of Medicine, Duke University School of Medicine, Durham, NC, United States of America
| | - Priya S Kishnani
- Division of Medical Genetics, Department of Pediatrics, Duke University School of Medicine, Durham, NC, United States of America; Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, United States of America
| | - Richard Steet
- Biochemistry and Molecular Biology, Complex Carbohydrate Research Center, University of Georgia, Athens, GA, United States of America; Greenwood Genetic Center, Greenwood, SC, United States of America
| | - Dwight D Koeberl
- Division of Medical Genetics, Department of Pediatrics, Duke University School of Medicine, Durham, NC, United States of America; Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, United States of America.
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Visnapuu T, Meldre A, Põšnograjeva K, Viigand K, Ernits K, Alamäe T. Characterization of a Maltase from an Early-Diverged Non-Conventional Yeast Blastobotrys adeninivorans. Int J Mol Sci 2019; 21:E297. [PMID: 31906253 PMCID: PMC6981392 DOI: 10.3390/ijms21010297] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/20/2019] [Accepted: 12/30/2019] [Indexed: 11/17/2022] Open
Abstract
Genome of an early-diverged yeast Blastobotrys (Arxula) adeninivorans (Ba) encodes 88 glycoside hydrolases (GHs) including two α-glucosidases of GH13 family. One of those, the rna_ARAD1D20130g-encoded protein (BaAG2; 581 aa) was overexpressed in Escherichia coli, purified and characterized. We showed that maltose, other maltose-like substrates (maltulose, turanose, maltotriose, melezitose, malto-oligosaccharides of DP 4‒7) and sucrose were hydrolyzed by BaAG2, whereas isomaltose and isomaltose-like substrates (palatinose, α-methylglucoside) were not, confirming that BaAG2 is a maltase. BaAG2 was competitively inhibited by a diabetes drug acarbose (Ki = 0.8 µM) and Tris (Ki = 70.5 µM). BaAG2 was competitively inhibited also by isomaltose-like sugars and a hydrolysis product-glucose. At high maltose concentrations, BaAG2 exhibited transglycosylating ability producing potentially prebiotic di- and trisaccharides. Atypically for yeast maltases, a low but clearly recordable exo-hydrolytic activity on amylose, amylopectin and glycogen was detected. Saccharomyces cerevisiae maltase MAL62, studied for comparison, had only minimal ability to hydrolyze these polymers, and its transglycosylating activity was about three times lower compared to BaAG2. Sequence identity of BaAG2 with other maltases was only moderate being the highest (51%) with the maltase MalT of Aspergillus oryzae.
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Affiliation(s)
| | | | | | | | | | - Tiina Alamäe
- Department of Genetics, Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia; (T.V.); (A.M.); (K.P.); (K.V.); (K.E.)
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Kishnani PS, Gibson JB, Gambello MJ, Hillman R, Stockton DW, Kronn D, Leslie ND, Pena LDM, Tanpaiboon P, Day JW, Wang RY, Goldstein JL, An Haack K, Sparks SE, Zhao Y, Hahn SH. Clinical characteristics and genotypes in the ADVANCE baseline data set, a comprehensive cohort of US children and adolescents with Pompe disease. Genet Med 2019; 21:2543-2551. [PMID: 31086307 PMCID: PMC8076035 DOI: 10.1038/s41436-019-0527-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 04/17/2019] [Indexed: 11/08/2022] Open
Abstract
PURPOSE To characterize clinical characteristics and genotypes of patients in the ADVANCE study of 4000 L-scale alglucosidase alfa (NCT01526785), the largest prospective United States Pompe disease cohort to date. METHODS Patients aged ≥1 year with confirmed Pompe disease previously receiving 160 L alglucosidase alfa were eligible. GAA genotypes were determined before/at enrollment. Baseline assessments included histories/physical exams, Gross Motor Function Measure-88 (GMFM-88), pulmonary function tests, and cardiac assessments. RESULTS Of 113 enrollees (60 male/53 female) aged 1-18 years, 87 had infantile-onset Pompe disease (IOPD) and 26 late-onset (LOPD). One hundred eight enrollees with GAA genotypes had 215 pathogenic variants (220 including combinations): 118 missense (4 combinations), 23 splice, 35 nonsense, 34 insertions/deletions, 9 duplications (1 combination), 6 other; c.2560C>T (n = 23), c.-32-13T>G (n = 13), and c.525delT (n = 12) were most common. Four patients had previously unpublished variants, and 14/83 (17%) genotyped IOPD patients were cross-reactive immunological material-negative. All IOPD and 6/26 LOPD patients had cardiac involvement, all without c.-32-13T>G. Thirty-two (26 IOPD, 6 LOPD) were invasively ventilated. GMFM-88 total %scores (mean ± SD, median, range): overall 46.3 ± 33.0% (47.9%, 0.0-100.0%), IOPD 41.6 ± 31.64% (38.9%, 0.0-99.7%), LOPD: 61.8 ± 33.2 (70.9%, 0.0-100.0%). CONCLUSION ADVANCE, a uniformly assessed cohort comprising most US children and adolescents with treated Pompe disease, expands understanding of the phenotype and observed variants in the United States.
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Affiliation(s)
| | | | | | | | - David W Stockton
- Children's Hospital of Michigan and Wayne State University, Detroit, MI, USA
| | | | | | - Loren D M Pena
- Duke University Medical Center, Durham, NC, USA
- Cincinnati Children's Hospital, Cincinnati, OH, USA
- University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | | | | | - Raymond Y Wang
- Children's Hospital of Orange County, Orange, CA, USA
- University of California-Irvine School of Medicine, Irvine, CA, USA
| | | | | | | | | | - Si Houn Hahn
- Seattle Children's Hospital/University of Washington, Seattle, WA, USA
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Shao T, Yuan P, Zhu L, Xu H, Li X, He S, Li P, Wang G, Chen K. Carbon Nanoparticles Inhibit Α-Glucosidase Activity and Induce a Hypoglycemic Effect in Diabetic Mice. Molecules 2019; 24:molecules24183257. [PMID: 31500170 PMCID: PMC6767295 DOI: 10.3390/molecules24183257] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 09/02/2019] [Accepted: 09/06/2019] [Indexed: 12/12/2022] Open
Abstract
New, improved therapies to reduce blood glucose are required for treating diabetes mellitus (DM). Here, we investigated the use of a new nanomaterial candidate for DM treatment, carbon nanoparticles (CNPs). CNPs were prepared by carbonization using a polysaccharide from Arctium lappa L. root as the carbon source. The chemical structure and morphology of the CNPs were characterized using Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, elemental analysis, and transmission electron microscopy. CNPs were spherical, 10-20 nm in size, consisting of C, H, O, and N, and featuring various functional groups, including C=O, C=C, C–O, and C–N. In vitro, the as-prepared CNPs could inhibit α-glucosidase with an IC50 value of 0.5677 mg/mL, which is close to that of the reference drug acarbose. Moreover, in vivo hypoglycemic assays revealed that the CNPs significantly reduced fasting blood-glucose levels in mice with diabetes induced by high-fat diet and streptozocin, lowering blood glucose after intragastric administration for 42 days. To the best of our knowledge, this is the first report of CNPs exhibiting α-glucosidase inhibition and a hypoglycemic effect in diabetic mice. These findings suggest the therapeutic potential of CNPs for diabetes.
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Affiliation(s)
- Taili Shao
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Wuhu 241002, China
- Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Pingchuan Yuan
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Wuhu 241002, China
- Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
- Anhui Province Key Laboratory of Active Biological Macromolecules, Wuhu 241002, China
| | - Lei Zhu
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Wuhu 241002, China
- Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
- Anhui Province Key Laboratory of Active Biological Macromolecules, Wuhu 241002, China
| | - Honggang Xu
- Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Xichen Li
- Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Shuguang He
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Wuhu 241002, China
- Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Ping Li
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Wuhu 241002, China
- Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Guodong Wang
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Wuhu 241002, China.
- Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China.
- Anhui Province Key Laboratory of Active Biological Macromolecules, Wuhu 241002, China.
| | - Kaoshan Chen
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Wuhu 241002, China.
- Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China.
- Anhui Province Key Laboratory of Active Biological Macromolecules, Wuhu 241002, China.
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Sun X, Zhang J, Fan ZH, Xiao P, Liu SN, Li RP, Zhu WB, Huang L. MAL62 Overexpression Enhances Freezing Tolerance of Baker's Yeast in Lean Dough by Enhancing Tps1 Activity and Maltose Metabolism. J Agric Food Chem 2019; 67:8986-8993. [PMID: 31347835 DOI: 10.1021/acs.jafc.9b03790] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Trehalose plays a crucial role in response to freezing stress in baker's yeast. MAL62, a gene involved in the adenosine diphosphoglucose-dependent trehalose synthesis pathway, can increase trehalose content. However, the difference between MAL62-related trehalose synthesis and traditional uridine diphosphoglucose-dependent trehalose synthesis is not well-understood. MAL62 overexpression showed less effect in enhancing intracellular trehalose compared to TPS1 overexpression. However, MAL62 overexpression elicited trehalose synthesis before fermentation with enhanced maltose metabolism and had a similar effect on cell viability after freezing. Furthermore, MAL62 and TPS1 overexpression in the NTH1 deletion background further strengthened freezing tolerance and improved leavening ability. Our results suggest that the enhancement in freezing tolerance by MAL62 overexpression may involve multiple pathways rather than simply enhancing trehalose synthesis. The results reveal valuable insights into the relationship between maltose metabolism and freezing tolerance and may help to develop better yeast strains for enhancing fermentation characteristics of frozen dough.
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Affiliation(s)
- Xi Sun
- Tianjin Engineering Research Center of Agricultural Products Processing , Tianjin 300384 , People's Republic of China
| | - Jun Zhang
- Tianjin Engineering Research Center of Agricultural Products Processing , Tianjin 300384 , People's Republic of China
| | - Zhi-Hua Fan
- Tianjin Engineering Research Center of Agricultural Products Processing , Tianjin 300384 , People's Republic of China
| | - Ping Xiao
- Tianjin Engineering Research Center of Agricultural Products Processing , Tianjin 300384 , People's Republic of China
| | - Shan-Na Liu
- Tianjin Engineering Research Center of Agricultural Products Processing , Tianjin 300384 , People's Republic of China
| | - Rui-Peng Li
- Tianjin Engineering Research Center of Agricultural Products Processing , Tianjin 300384 , People's Republic of China
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Schneider I, Hensel O, Zierz S. White matter lesions in treated late onset Pompe disease are not different to matched controls. Mol Genet Metab 2019; 127:128-131. [PMID: 31153821 DOI: 10.1016/j.ymgme.2019.05.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 05/06/2019] [Accepted: 05/13/2019] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Genetic deficiency of α-1,4-glucosidase leads to multi-systemic glycogen storage and causes muscular disorder known as classic infantile Pompe disease (CIOPD) and late onset Pompe disease (LOPD). Treatment with recombinant human alglucosidase alfa is available as enzyme replacement therapy (ERT). Recently progressive white matter lesions (WML) have been observed as a new phenotype in CIOPD patients on treatment with ERT. OBJECTIVE To investigate the impact of disease and ERT for the development of WML in LOPD. METHODS WML were analysed in 19 treated LOPD patients and compared with findings of 38 matched controls. RESULTS Patients median age was 54.4 years (range 19 to 82 years) with median disease duration of 7 years (range 2 to 40 years). Median ERT duration was 63 months (range 9 to 135 months). Grading of WML by Fazekas Score was not different in LOPD patients and controls: Mean of total Fazekas score in LOPD was 2.42 ± 2.40 and in controls 1.60 ± 2.64; p = 0.68. Also volume of WML was similar in patients and controls (mean 5.27 ml ± 5.88 and 7.89 ml ± 11.40 respectively, p = 0.35). Total Fazekas grade correlated directly with the age in LOPD patients (r = 0.60; p = 0.007) and in controls (r = 0.32; p = 0.04). There was a negative correlation of ERT duration and total Fazekas grade (r = -0.41; p = 0.04). CONCLUSION The study suggests that WML in LOPD mainly result from concomitant cerebrovascular risk factors rather than from the Pompe disease itself.
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Affiliation(s)
- Ilka Schneider
- Department of Neurology, University hospital, Ernst-Grube-Str. 40, 06120 Halle (Saale), Germany.
| | - Ole Hensel
- Department of Neurology, University hospital, Ernst-Grube-Str. 40, 06120 Halle (Saale), Germany.
| | - Stephan Zierz
- Department of Neurology, University hospital, Ernst-Grube-Str. 40, 06120 Halle (Saale), Germany.
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Lukas J, Hermann A, Giese AK. Silent but significant - A synonymous SNV alters prognosis in Pompe disease. EBioMedicine 2019; 43:20-21. [PMID: 30982766 PMCID: PMC6562060 DOI: 10.1016/j.ebiom.2019.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 04/05/2019] [Indexed: 11/19/2022] Open
Affiliation(s)
- Jan Lukas
- Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany.
| | - Andreas Hermann
- Translational Neurodegeneration Section "Albrecht-Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany; German Center for Neurodegenerative Diseases (DZNE) Rostock/Greifswald, 18147 Rostock, Germany
| | - Anne-Katrin Giese
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
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