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Hinderer C, Bell P, Louboutin JP, Katz N, Zhu Y, Lin G, Choa R, Bagel J, O'Donnell P, Fitzgerald CA, Langan T, Wang P, Casal ML, Haskins ME, Wilson JM. Neonatal tolerance induction enables accurate evaluation of gene therapy for MPS I in a canine model. Mol Genet Metab 2016; 119:124-30. [PMID: 27386755 PMCID: PMC5240037 DOI: 10.1016/j.ymgme.2016.06.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [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: 05/04/2016] [Revised: 06/07/2016] [Accepted: 06/07/2016] [Indexed: 11/26/2022]
Abstract
High fidelity animal models of human disease are essential for preclinical evaluation of novel gene and protein therapeutics. However, these studies can be complicated by exaggerated immune responses against the human transgene. Here we demonstrate that dogs with a genetic deficiency of the enzyme α-l-iduronidase (IDUA), a model of the lysosomal storage disease mucopolysaccharidosis type I (MPS I), can be rendered immunologically tolerant to human IDUA through neonatal exposure to the enzyme. Using MPS I dogs tolerized to human IDUA as neonates, we evaluated intrathecal delivery of an adeno-associated virus serotype 9 vector expressing human IDUA as a therapy for the central nervous system manifestations of MPS I. These studies established the efficacy of the human vector in the canine model, and allowed for estimation of the minimum effective dose, providing key information for the design of first-in-human trials. This approach can facilitate evaluation of human therapeutics in relevant animal models, and may also have clinical applications for the prevention of immune responses to gene and protein replacement therapies.
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Affiliation(s)
- Christian Hinderer
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Peter Bell
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jean-Pierre Louboutin
- Section of Anatomy, Department of Basic Medical Sciences, University of the West Indies, Kingston, Jamaica
| | - Nathan Katz
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yanqing Zhu
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Gloria Lin
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Ruth Choa
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jessica Bagel
- Departments of Pathobiology and Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Patricia O'Donnell
- Departments of Pathobiology and Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Caitlin A Fitzgerald
- Departments of Pathobiology and Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Therese Langan
- Departments of Pathobiology and Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Ping Wang
- Departments of Pathobiology and Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Margret L Casal
- Departments of Pathobiology and Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Mark E Haskins
- Departments of Pathobiology and Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - James M Wilson
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
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Mattis VB, Wakeman DR, Tom C, Dodiya HB, Yeung SY, Tran AH, Bernau K, Ornelas L, Sahabian A, Reidling J, Sareen D, Thompson LM, Kordower JH, Svendsen CN. Neonatal immune-tolerance in mice does not prevent xenograft rejection. Exp Neurol 2014; 254:90-8. [PMID: 24440640 DOI: 10.1016/j.expneurol.2014.01.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 01/03/2014] [Accepted: 01/07/2014] [Indexed: 12/24/2022]
Abstract
Assessing the efficacy of human stem cell transplantation in rodent models is complicated by the significant immune rejection that occurs. Two recent reports have shown conflicting results using neonatal tolerance to xenografts in rats. Here we extend this approach to mice and assess whether neonatal tolerance can prevent the rapid rejection of xenografts. In three strains of neonatal immune-intact mice, using two different brain transplant regimes and three independent stem cell types, we conclusively show that there is rapid rejection of the implanted cells. We also address specific challenges associated with the generation of humanized mouse models of disease.
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Affiliation(s)
- Virginia B Mattis
- Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | | | - Colton Tom
- Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | | | | | | | | | - Loren Ornelas
- Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Anais Sahabian
- Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | | | - Dhruv Sareen
- Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | | | | | - Clive N Svendsen
- Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
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