1
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Placci M, Giannotti MI, Muro S. Polymer-based drug delivery systems under investigation for enzyme replacement and other therapies of lysosomal storage disorders. Adv Drug Deliv Rev 2023; 197:114683. [PMID: 36657645 PMCID: PMC10629597 DOI: 10.1016/j.addr.2022.114683] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/30/2022] [Accepted: 12/25/2022] [Indexed: 01/18/2023]
Abstract
Lysosomes play a central role in cellular homeostasis and alterations in this compartment associate with many diseases. The most studied example is that of lysosomal storage disorders (LSDs), a group of 60 + maladies due to genetic mutations affecting lysosomal components, mostly enzymes. This leads to aberrant intracellular storage of macromolecules, altering normal cell function and causing multiorgan syndromes, often fatal within the first years of life. Several treatment modalities are available for a dozen LSDs, mostly consisting of enzyme replacement therapy (ERT) strategies. Yet, poor biodistribution to main targets such as the central nervous system, musculoskeletal tissue, and others, as well as generation of blocking antibodies and adverse effects hinder effective LSD treatment. Drug delivery systems are being studied to surmount these obstacles, including polymeric constructs and nanoparticles that constitute the focus of this article. We provide an overview of the formulations being tested, the diseases they aim to treat, and the results observed from respective in vitro and in vivo studies. We also discuss the advantages and disadvantages of these strategies, the remaining gaps of knowledge regarding their performance, and important items to consider for their clinical translation. Overall, polymeric nanoconstructs hold considerable promise to advance treatment for LSDs.
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Affiliation(s)
- Marina Placci
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute for Science and Technology (BIST), Barcelona 08028, Spain
| | - Marina I Giannotti
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute for Science and Technology (BIST), Barcelona 08028, Spain; CIBER-BBN, ISCIII, Barcelona, Spain; Department of Materials Science and Physical Chemistry, University of Barcelona, Barcelona 08028, Spain
| | - Silvia Muro
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute for Science and Technology (BIST), Barcelona 08028, Spain; Institute of Catalonia for Research and Advanced Studies (ICREA), Barcelona 08010, Spain; Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA.
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2
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Pardridge WM. Blood-brain barrier delivery for lysosomal storage disorders with IgG-lysosomal enzyme fusion proteins. Adv Drug Deliv Rev 2022; 184:114234. [PMID: 35307484 DOI: 10.1016/j.addr.2022.114234] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 02/25/2022] [Accepted: 03/14/2022] [Indexed: 12/12/2022]
Abstract
The majority of lysosomal storage diseases affect the brain. Treatment of the brain with intravenous enzyme replacement therapy is not successful, because the recombinant lysosomal enzymes do not cross the blood-brain barrier (BBB). Biologic drugs, including lysosomal enzymes, can be re-engineered for BBB delivery as IgG-enzyme fusion proteins. The IgG domain of the fusion protein is a monoclonal antibody directed against an endogenous receptor-mediated transporter at the BBB, such as the insulin receptor or the transferrin receptor. This receptor transports the IgG across the BBB, in parallel with the endogenous receptor ligand, and the IgG acts as a molecular Trojan horse to ferry into brain the lysosomal enzyme genetically fused to the IgG. The IgG-enzyme fusion protein is bi-functional and retains both high affinity binding for the BBB receptor, and high lysosomal enzyme activity. IgG-lysosomal enzymes are presently in clinical trials for treatment of the brain in Mucopolysaccharidosis.
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3
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Nicoli ER, Annunziata I, d’Azzo A, Platt FM, Tifft CJ, Stepien KM. GM1 Gangliosidosis-A Mini-Review. Front Genet 2021; 12:734878. [PMID: 34539759 PMCID: PMC8446533 DOI: 10.3389/fgene.2021.734878] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 08/16/2021] [Indexed: 11/13/2022] Open
Abstract
GM1 gangliosidosis is a progressive, neurosomatic, lysosomal storage disorder caused by mutations in the GLB1 gene encoding the enzyme β-galactosidase. Absent or reduced β-galactosidase activity leads to the accumulation of β-linked galactose-containing glycoconjugates including the glycosphingolipid (GSL) GM1-ganglioside in neuronal tissue. GM1-gangliosidosis is classified into three forms [Type I (infantile), Type II (late-infantile and juvenile), and Type III (adult)], based on the age of onset of clinical symptoms, although the disorder is really a continuum that correlates only partially with the levels of residual enzyme activity. Severe neurocognitive decline is a feature of Type I and II disease and is associated with premature mortality. Most of the disease-causing β-galactosidase mutations reported in the literature are clustered in exons 2, 6, 15, and 16 of the GLB1 gene. So far 261 pathogenic variants have been described, missense/nonsense mutations being the most prevalent. There are five mouse models of GM1-gangliosidosis reported in the literature generated using different targeting strategies of the Glb1 murine locus. Individual models differ in terms of age of onset of the clinical, biochemical, and pathological signs and symptoms, and overall lifespan. However, they do share the major abnormalities and neurological symptoms that are characteristic of the most severe forms of GM1-gangliosidosis. These mouse models have been used to study pathogenic mechanisms, to identify biomarkers, and to evaluate therapeutic strategies. Three GLB1 gene therapy trials are currently recruiting Type I and Type II patients (NCT04273269, NCT03952637, and NCT04713475) and Type II and Type III patients are being recruited for a trial utilizing the glucosylceramide synthase inhibitor, venglustat (NCT04221451).
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Affiliation(s)
- Elena-Raluca Nicoli
- Glycosphingolipid and Glycoprotein Disorders Unit, Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, United States
| | - Ida Annunziata
- Department of Genetics, St. Jude Children’s Research Hospital, Memphis, TN, United States
| | - Alessandra d’Azzo
- Department of Genetics, St. Jude Children’s Research Hospital, Memphis, TN, United States
- Department of Anatomy and Neurobiology, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Frances M. Platt
- Department of Pharmacology, University of Oxford, Oxford, United Kingdom
| | - Cynthia J. Tifft
- Glycosphingolipid and Glycoprotein Disorders Unit, Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, United States
- Office of the Director, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, United States
| | - Karolina M. Stepien
- Adult Inherited Metabolic Disorders, Salford Royal NHS Foundation Trust, Salford, United Kingdom
- Division of Diabetes, Endocrinology and Gastroenterology, University of Manchester, Manchester, United Kingdom
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4
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Gross AL, Gray-Edwards HL, Bebout CN, Ta NL, Nielsen K, Brunson BL, Mercado KRL, Osterhoudt DE, Batista AR, Maitland S, Seyfried TN, Sena-Esteves M, Martin DR. Intravenous delivery of adeno-associated viral gene therapy in feline GM1 gangliosidosis. Brain 2021; 145:655-669. [PMID: 34410345 DOI: 10.1093/brain/awab309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 07/12/2021] [Accepted: 07/28/2021] [Indexed: 11/14/2022] Open
Abstract
GM1 gangliosidosis is a fatal neurodegenerative disease caused by a deficiency of lysosomal β-galactosidase. In its most severe form, GM1 gangliosidosis causes death by 4 years of age, and no effective treatments exist. Previous work has shown that injection of the brain parenchyma with an adeno-associated viral vector provides pronounced therapeutic benefit in a feline GM1 model. To develop a less invasive treatment for the brain and increase systemic biodistribution, intravenous injection of AAV9 was evaluated. AAV9 expressing feline β-galactosidase was intravenously administered at 1.5x1013 vector genomes/kilogram body weight to six GM1 cats at approximately 1 month of age. The animals were divided into two cohorts: 1) a long-term group, which was followed to humane endpoint, and 2) a short-term group, which was analyzed 16-weeks post treatment. Clinical assessments included neurological exams, cerebrospinal fluid and urine biomarkers, and 7-Telsa magnetic resonance imaging and spectroscopy. Postmortem analysis included β-galactosidase and virus distribution, histological analysis, and ganglioside content. Untreated GM1 animals survived 8.0 ± 0.6 months while intravenous treatment increased survival to an average of 3.5 years (n = 2) with substantial improvements in quality of life and neurologic function. Neurological abnormalities, which in untreated animals progress to the inability to stand and debilitating neurological disease by 8 months of age, were mild in all treated animals. Cerebrospinal fluid biomarkers were normalized, indicating decreased central nervous system cell damage in the treated animals. Urinary glycosaminoglycans decreased to normal levels in the long-term cohort. Magnetic resonance imaging and spectroscopy showed partial preservation of the brain in treated animals, which was supported by postmortem histological evaluation. β-galactosidase activity was increased throughout the central nervous system, reaching carrier levels in much of the cerebrum and normal levels in the cerebellum, spinal cord and cerebrospinal fluid. Ganglioside accumulation was significantly reduced by treatment. Peripheral tissues such as heart, skeletal muscle, and sciatic nerve also had normal β-galactosidase activity in treated GM1 cats. GM1 histopathology was largely corrected with treatment. There was no evidence of tumorigenesis or toxicity. Restoration of β-galactosidase activity in the central nervous system and peripheral organs by intravenous gene therapy led to profound increases in lifespan and quality of life in GM1 cats. This data supports the promise of intravenous gene therapy as a safe, effective treatment for GM1 gangliosidosis.
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Affiliation(s)
- Amanda L Gross
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL 36849 USA.,Department of Anatomy, Physiology, and Pharmacology, College of Veterinary Medicine, Auburn University, AL 36849 USA
| | - Heather L Gray-Edwards
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL 36849 USA
| | - Cassie N Bebout
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL 36849 USA
| | - Nathan L Ta
- Biology Department, Boston College, Chestnut Hill, MA 02467 USA
| | - Kayly Nielsen
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL 36849 USA
| | - Brandon L Brunson
- Department of Anatomy, Physiology, and Pharmacology, College of Veterinary Medicine, Auburn University, AL 36849 USA
| | - Kalajan R Lopez Mercado
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL 36849 USA
| | - Devin E Osterhoudt
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL 36849 USA
| | - Ana Rita Batista
- Department of Neurology, University of Massachusetts Medical School, Worcester MA 01605 USA.,Horae Gene Therapy Center, University of Massachusetts Medical School, Worcester MA 01605 USA
| | - Stacy Maitland
- Department of Neurology, University of Massachusetts Medical School, Worcester MA 01605 USA.,Horae Gene Therapy Center, University of Massachusetts Medical School, Worcester MA 01605 USA
| | | | - Miguel Sena-Esteves
- Department of Neurology, University of Massachusetts Medical School, Worcester MA 01605 USA.,Horae Gene Therapy Center, University of Massachusetts Medical School, Worcester MA 01605 USA
| | - Douglas R Martin
- Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL 36849 USA.,Department of Anatomy, Physiology, and Pharmacology, College of Veterinary Medicine, Auburn University, AL 36849 USA
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5
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Przybilla MJ, Stewart C, Carlson TW, Ou L, Koniar BL, Sidhu R, Kell PJ, Jiang X, Jarnes JR, O'Sullivan MG, Whitley CB. Examination of a blood-brain barrier targeting β-galactosidase-monoclonal antibody fusion protein in a murine model of GM1-gangliosidosis. Mol Genet Metab Rep 2021; 27:100748. [PMID: 33854948 PMCID: PMC8025141 DOI: 10.1016/j.ymgmr.2021.100748] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 03/17/2021] [Indexed: 11/25/2022] Open
Abstract
GM1-gangliosidosis is a lysosomal disease resulting from a deficiency in the hydrolase β-galactosidase (β-gal) and subsequent accumulation of gangliosides, primarily in neuronal tissue, leading to progressive neurological deterioration and eventually early death. Lysosomal diseases with neurological involvement have limited non-invasive therapies due to the inability of lysosomal enzymes to cross the blood-brain barrier (BBB). A novel fusion enzyme, labeled mTfR-GLB1, was designed to act as a ferry across the BBB by fusing β-gal to the mouse monoclonal antibody against the mouse transferrin receptor and tested in a murine model of GM1-gangliosidosis (β-gal-/-). Twelve hours following a single intravenous dose of mTfR-GLB1 (5.0 mg/kg) into adult β-gal-/- mice showed clearance of enzyme activity in the plasma and an increase in β-gal enzyme activity in the liver and spleen. Long-term efficacy of mTfR-GLB1 was assessed by treating β-gal-/- mice intravenously twice a week with a low (2.5 mg/kg) or high (5.0 mg/kg) dose of mTfR-GLB1 for 17 weeks. Long-term studies showed high dose mice gained weight normally compared to vehicle-treated β-gal-/- mice, which are significantly heavier than heterozygous controls. Behavioral assessment at six months of age using the pole test showed β-gal-/- mice treated with mTfR-GLB1 had improved motor function. Biochemical analysis showed an increase in β-gal enzyme activity in the high dose group from negligible levels to 20% and 11% of heterozygous levels in the liver and spleen, respectively. Together, these data show that mTfR-GLB1 is a catalytically active β-gal fusion enzyme in vivo that is readily taken up into tissues. Despite these indications of bioactivity, behavior tests other than the pole test, including the Barnes maze, inverted screen, and accelerating rotarod, showed limited or no improvement of treated mice compared to β-gal-/- mice receiving vehicle only. Further, administration of mTfR-GLB1 was insufficient to create measurable increases in β-gal enzyme activity in the brain or reduce ganglioside content (biochemically and morphologically).
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Affiliation(s)
- Michael J Przybilla
- Gene Therapy Center, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
| | - Christine Stewart
- Research Department, Tanabe Research Laboratories U.S.A., Inc, San Diego, CA, USA
| | - Timothy W Carlson
- Comparative Pathology Shared Resource, University of Minnesota Masonic Cancer Center, Saint Paul, MN, USA
| | - Li Ou
- Gene Therapy Center, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
| | - Brenda L Koniar
- Center for Translational Medicine, Academic Health Center, University of Minnesota, Minneapolis, MN, USA
| | - Rohini Sidhu
- Department of Medicine, Washington University School of Medicine, Saint Louis, MO, USA
| | - Pamela J Kell
- Department of Medicine, Washington University School of Medicine, Saint Louis, MO, USA
| | - Xuntian Jiang
- Department of Medicine, Washington University School of Medicine, Saint Louis, MO, USA
| | - Jeanine R Jarnes
- Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, Minneapolis, MN, USA
| | - M Gerard O'Sullivan
- Comparative Pathology Shared Resource, University of Minnesota Masonic Cancer Center, Saint Paul, MN, USA
| | - Chester B Whitley
- Gene Therapy Center, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
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6
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Bi-functional IgG-lysosomal enzyme fusion proteins for brain drug delivery. Sci Rep 2019; 9:18632. [PMID: 31819150 PMCID: PMC6901507 DOI: 10.1038/s41598-019-55136-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 10/03/2019] [Indexed: 11/12/2022] Open
Abstract
Most lysosomal storage disorders affect the central nervous system. However, lysosomal enzymes do not cross the blood-brain barrier (BBB), and intravenous enzyme infusion is not effective for the brain. Lysosomal enzymes can be re-engineered for BBB transport as IgG-enzyme fusion proteins, where the IgG domain is a monoclonal antibody (MAb) against an endogenous BBB receptor/transporter, and which acts as a molecular Trojan horse to deliver the enzyme to brain. However, the problem is retention of high enzyme activity following enzyme fusion to the IgG. The present investigation shows this is possible with a versatile approach that employs fusion of the enzyme to either the IgG heavy chain or light chain using a long flexible linker. The model IgG is a chimeric monoclonal antibody (MAb) against the human insulin receptor (HIR). The enzyme activity of the HIRMAb-enzyme fusion protein is preserved for hexosaminidase A, which is mutated in Tay Sachs disease, for protein palmitoylthioesterase-1, which is mutated in Batten disease type 1, acid sphingomyelinase, which is mutated in Niemann Pick disease type A, and beta galactosidase-1, which is mutated in GM1 gangliosidosis.
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7
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Tonin R, Caciotti A, Procopio E, Fischetto R, Deodato F, Mancardi MM, Di Rocco M, Ardissone A, Salviati A, Marangi A, Strisciuglio P, Mangone G, Casini A, Ricci S, Fiumara A, Parini R, Pavone FS, Guerrini R, Calamai M, Morrone A. Pre-diagnosing and managing patients with GM1 gangliosidosis and related disorders by the evaluation of GM1 ganglioside content. Sci Rep 2019; 9:17684. [PMID: 31776384 PMCID: PMC6881353 DOI: 10.1038/s41598-019-53995-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 09/26/2019] [Indexed: 01/03/2023] Open
Abstract
GM1 ganglioside, a monosialic glycosphingolipid and a crucial component of plasma membranes, accumulates in lysosomal storage disorders, primarily in GM1 gangliosidosis. The development of biomarkers for simplifying diagnosis, monitoring disease progression and evaluating drug therapies is an important objective in research into neurodegenerative lysosomal disorders. With this in mind, we established fluorescent imaging and flow-cytometric methods to track changes in GM1 ganglioside levels in patients with GM1 gangliosidosis and in control cells. We also evaluated GM1 ganglioside content in patients’ cells treated with the commercially available Miglustat, a substrate inhibitor potentially suitable for the treatment of late-onset GM1 gangliosidosis. The flow-cytometric method proved to be sensitive, unbiased, and rapid in determining variations in GM1 ganglioside content in human lymphocytes derived from small amounts of fresh blood. We detected a strong correlation between GM1 ganglioside content and the clinical severity of GM1 gangliosidosis. We confirm the ability of Miglustat to act as a substrate reduction agent in the patients’ treated cells. As well as being suitable for diagnosing and managing patients with GM1 gangliosidosis this method could be useful in the diagnosis and management of other lysosomal diseases, such as galactosialidosis, Type C Niemann-Pick, and any other disease with pathologic variations of GM1 ganglioside.
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Affiliation(s)
- Rodolfo Tonin
- Molecular and Cell Biology Laboratory of Neurometabolic Diseases, Neuroscience Department, Meyer Children's Hospital, Florence, Italy
| | - Anna Caciotti
- Molecular and Cell Biology Laboratory of Neurometabolic Diseases, Neuroscience Department, Meyer Children's Hospital, Florence, Italy
| | - Elena Procopio
- Metabolic Unit, Meyer Children's Hospital, Florence, Italy
| | - Rita Fischetto
- Divisione Malattie Metaboliche-Genetica Medica, Ospedale Regionale Pediatrico Giovanni XXIII, Bari, Italy
| | - Federica Deodato
- Division of Metabolism, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | | | - Maja Di Rocco
- Unit of Rare Diseases, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | - Anna Ardissone
- Divisione Neuropsichiatria Infantile, Fondazione IRCCS Istituto Nazionale Neurologico C. Besta, Milan, Italy
| | | | | | - Pietro Strisciuglio
- Department of Translational Medical Sciences, Section of Pediatrics, Federico II University of Naples, Naples, Italy
| | - Giusi Mangone
- Division of Immunology, Section of Pediatrics, Department of Health Sciences, University of Florence and Meyer Children's Hospital, Florence, Italy
| | - Arianna Casini
- Division of Immunology, Section of Pediatrics, Department of Health Sciences, University of Florence and Meyer Children's Hospital, Florence, Italy
| | - Silvia Ricci
- Division of Immunology, Section of Pediatrics, Department of Health Sciences, University of Florence and Meyer Children's Hospital, Florence, Italy
| | - Agata Fiumara
- Malattie Metaboliche e Sindromi Malformative Congenite, P.O. Gaspare Rodolico, Catania, Italy
| | - Rossella Parini
- UOS Malattie Metaboliche Rare, Clinica Pediatrica, Ospedale San Gerardo, Monza, Italy
| | | | - Renzo Guerrini
- Molecular and Cell Biology Laboratory of Neurometabolic Diseases, Neuroscience Department, Meyer Children's Hospital, Florence, Italy.,Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino, University of Florence, Florence, Italy
| | - Martino Calamai
- European Laboratory for Non-linear Spectroscopy (LENS), University of Florence, Florence, Italy.,National Institute of Optics, National Research Council of Italy (CNR), Florence, Italy
| | - Amelia Morrone
- Molecular and Cell Biology Laboratory of Neurometabolic Diseases, Neuroscience Department, Meyer Children's Hospital, Florence, Italy. .,Metabolic Unit, Meyer Children's Hospital, Florence, Italy.
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8
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Lowering effect of dimethyl-α-cyclodextrin on GM1-ganglioside accumulation in GM1-gangliosidosis model cells and in brain of β-galactosidase-knockout mice. J INCL PHENOM MACRO 2018. [DOI: 10.1007/s10847-018-0835-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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9
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Kelly JM, Gross AL, Martin DR, Byrne ME. Polyethylene glycol-b-poly(lactic acid) polymersomes as vehicles for enzyme replacement therapy. Nanomedicine (Lond) 2017; 12:2591-2606. [PMID: 29111890 DOI: 10.2217/nnm-2017-0221] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
AIM Polymersomes are created to deliver an enzyme-based therapy to the brain in lysosomal storage disease patients. MATERIALS & METHODS Polymersomes are formed via the injection method using poly(ethylene glycol)-b-poly(lactic acid) (PEGPLA) and bound to apolipoprotein E, to create a brain-targeted delivery vehicle. RESULTS Polymersomes have a smallest average diameter of 145 ± 21 nm and encapsulate β-galactosidase at 72.0 ± 12.2% efficiency. PEGPLA polymersomes demonstrate limited release at physiologic pH (7.4), with a burst release at the acidic pH (4.8) of the lysosome. PEGPLA polymersomes facilitate delivery of active β-galactosidase to an in vitro model of GM1 gangliosidosis. CONCLUSION The foundation has been laid for testing of PEGPLA polymersomes to deliver enzymatic treatments to the brain in lysosomal storage disorders for the first time.
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Affiliation(s)
- Jessica M Kelly
- Biomimetic & Biohybrid Materials, Biomedical Devices, & Drug Delivery Laboratories, Department of Chemical Engineering, Samuel Ginn College of Engineering, Auburn University, Auburn, AL 36849, USA.,Scott Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA.,US Department of Education GAANN Graduate Fellowship Program in Biological & Pharmaceutical Engineering, Auburn University, Auburn, AL 36849, USA
| | - Amanda L Gross
- Scott Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA.,Department of Anatomy, Physiology, & Pharmacology, Scott Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA
| | - Douglas R Martin
- Scott Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA.,US Department of Education GAANN Graduate Fellowship Program in Biological & Pharmaceutical Engineering, Auburn University, Auburn, AL 36849, USA.,Department of Anatomy, Physiology, & Pharmacology, Scott Ritchey Research Center, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA
| | - Mark E Byrne
- Biomimetic & Biohybrid Materials, Biomedical Devices, & Drug Delivery Laboratories, Department of Chemical Engineering, Samuel Ginn College of Engineering, Auburn University, Auburn, AL 36849, USA.,US Department of Education GAANN Graduate Fellowship Program in Biological & Pharmaceutical Engineering, Auburn University, Auburn, AL 36849, USA.,Biomimetic & Biohybrid Materials, Biomedical Devices, & Drug Delivery Laboratories, Department of Biomedical Engineering, Rowan University, Glassboro, NJ 08028, USA
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10
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Nguyen TT, Vu HV, Nguyen NTH, Do TT, Nguyen TSL. Effect of mutations to amino acid A301 and F361 in thermostability and catalytic activity of the β-galactosidase from Bacillus subtilis VTCC-DVN-12-01. BMC BIOCHEMISTRY 2016; 17:15. [PMID: 27393145 PMCID: PMC4938916 DOI: 10.1186/s12858-016-0070-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 06/29/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND Beta-galactosidase (EC 3.2.1.23), a commercially important enzyme, catalyses the hydrolysis of β-1,3- and β-1,4-galactosyl bonds of polymer or oligosaccharidesas well as transglycosylation of β-galactopyranosides. Due to catalytic properties; β-galactosidase might be useful in the milk industry to hydrolyze lactose and produce prebiotic GOS. The purpose of this study is to characterize β-galactosidase mutants from B. subtilis. RESULTS Using error prone rolling circle amplification (epRCA) to characterize some random mutants of the β-galactosidase (LacA) from B. subtilisVTCC-DVN-12-01, amino acid A301 and F361 has been demonstrated significantly effect on hydrolysis activity of LacA. Mutants A301V and F361Y had markedly reduced hydrolysis activity to 23.69 and 43.22 %, respectively. Mutants the site-saturation of A301 reduced catalysis efficiency of LacA to 20-50 %, while the substitution of F361 by difference amino acids (except tyrosine) lost all of enzymatic activity, indicating that A301 and F361 are important for the catalytic function. Interestingly, the mutant F361Y exhibited enhanced significantly thermostability of enzyme at 45-50 °C. At 45 °C, LacA-361Y retained over 93 % of its original activity for 48 h of incubation, whereas LacA-WT and LacA-301Vwere lost completely after 12 and 24 h of incubation, respectively. The half-life times of LacA-361Y and LacA-301 V were about 26.8 and 2.4 times higher, respectively, in comparison to the half-life time of LacA-WT. At temperature optimum 50 °C, LacA-361Y shows more stable than LacA-WT and LacA-301 V, retaining 79.88 % of its original activities after 2 h of incubation, while the LacA-WT and LacA-301 V lost all essential activities. The half-life time of LacA-361Y was higher 12.7 and 9.39 times than that of LacA-WT and LacA-301 V, respectively. LacA-WT and mutant enzymes were stability at pH 5-9, retained over 90 % activity for 72 h of incubation at 30 °C. However, LacA-WT showed a little bit more stability than LacA-301 V and LacA-361Y at pH 4. CONCLUSIONS Our findings demonstrated that the amino acids A301V and F361 play important role in hydrolysis activity of β -galactosidase from B. subtilis. Specially, amino acid F361 had noteworthy effect on both catalytic and thermostability of LacA enzyme, suggesting that F361 is responsible for functional requirement of the GH42 family.
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Affiliation(s)
- Thao Thi Nguyen
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Distr. Caugiay, 10600, Hanoi, Vietnam
| | - Hanh Van Vu
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Distr. Caugiay, 10600, Hanoi, Vietnam
| | - Nhung Thi Hong Nguyen
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Distr. Caugiay, 10600, Hanoi, Vietnam
| | - Tuyen Thi Do
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Distr. Caugiay, 10600, Hanoi, Vietnam
| | - Thanh Sy Le Nguyen
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Distr. Caugiay, 10600, Hanoi, Vietnam.
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11
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Ansari SA, Satar R. Recombinant β-galactosidases – Past, present and future: A mini review. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcatb.2012.04.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Lambourne MD, Potter MA. Murine β-galactosidase stability is not dependent on temperature or protective protein/cathepsin A. Mol Genet Metab 2011; 104:620-6. [PMID: 22001501 DOI: 10.1016/j.ymgme.2011.09.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 09/12/2011] [Accepted: 09/12/2011] [Indexed: 11/30/2022]
Abstract
GM1 gangliosidosis, a neurodegenerative disorder, and Morquio B disease, a skeletal disorder, are lysosomal storage disorders caused by inherited defects in the enzyme β-galactosidase (GLB1; EC 3.1.2.23; MIM #611458). Enzyme replacement therapy (ERT), a standard of care for a number of non-neuronopathic lysosomal storage disorders, is not yet available for GLB1 deficiency. Although functionally active recombinant human and feline GLB1 precursors have been purified, ERT has not yet been demonstrated in GM1 gangliosidosis or Morquio B disease models. A major obstacle to developing effective therapy may be the stability of human GLB1. We show here that mouse GLB1 has greater stability when compared to human GLB1, and that human GLB1 activity is temperature and protective-dependent on protein cathepsin A, while that of mouse GLB1 is not. These findings may impact on the eventual development of ERT for GLB1 deficiency. Despite our attempts to improve the extracellular stability of human GLB1 through sequence modification and the use of chemical chaperone N-butyldeoxygalactonojirimycin, the specific enzyme activity remained well below that of mGLB1.
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Affiliation(s)
- Melissa D Lambourne
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada.
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Suzuki Y, Ogawa S, Sakakibara Y. Chaperone therapy for neuronopathic lysosomal diseases: competitive inhibitors as chemical chaperones for enhancement of mutant enzyme activities. PERSPECTIVES IN MEDICINAL CHEMISTRY 2009; 3:7-19. [PMID: 19812739 PMCID: PMC2754921 DOI: 10.4137/pmc.s2332] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Chaperone therapy is a newly developed molecular approach to lysosomal diseases, a group of human genetic diseases causing severe brain damage. We found two valienamine derivatives, N-octyl-4-epi-β-valienamine (NOEV) and N-octyl-β-valienamine (NOV), as promising therapeutic agents for human β-galactosidase deficiency disorders (mainly GM1-gangliosidosis) and β-glucosidase deficiency disorders (Gaucher disease), respectively. We briefly reviewed the historical background of research in carbasugar glycosidase inhibitors. Originally NOEV and NOV had been discovered as competitive inhibitors, and then their paradoxical bioactivities as chaperones were confirmed in cultured fibroblasts from patients with these disorders. Subsequently GM1-gangliosidosis model mice were developed and useful for experimental studies. Orally administered NOEV entered the brain through the blood-brain barrier, enhanced β-galactosidase activity, reduced substrate storage, and improved neurological deterioration clinically. Furthermore, we executed computational analysis for prediction of molecular interactions between β-galactosidase and NOEV. Some preliminary results of computational analysis of molecular interaction mechanism are presented in this article. NOV also showed the chaperone effect toward several β-glucosidase gene mutations in Gaucher disease. We hope chaperone therapy will become available for some patients with GM1-gangliosidosis, Gaucher disease, and potentially other lysosomal storage diseases with central nervous system involvement.
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Affiliation(s)
- Yoshiyuki Suzuki
- International University of Health and Welfare Graduate School, Kita Kanemaru, Otawara, 324-8501 Japan
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