Murine models of acute neuronopathic Gaucher disease

Research output: Contribution to journalArticle

Abstract

Gaucher disease (GD) is an autosomal recessive lysosomal storage disorder caused by mutations in the glucosidase, beta, acid (GBA) gene that encodes the lysosomal enzyme glucosylceramidase (GCase). GCase deficiency leads to characteristic visceral pathology and, in some patients, lethal neurological manifestations. Here, we report the generation of mouse models with the severe neuronopathic form of GD. To circumvent the lethal skin phenotype observed in several of the previous GCase-deficient animals, we genetically engineered a mouse model with strong reduction in GCase activity in all tissues except the skin. These mice exhibit rapid motor dysfunction associated with severe neurodegeneration and apoptotic cell death within the brain, reminiscent of neuronopathic GD. In addition, we have created a second mouse model, in which GCase deficiency is restricted to neural and glial cell progenitors and progeny. These mice develop similar pathology as the first mouse model, but with a delayed onset and slower disease progression, which indicates that GCase deficiency within microglial cells that are of hematopoietic origin is not the primary determinant of the CNS pathology. These findings also demonstrate that normal microglial cells cannot rescue this neurodegenerative disease. These mouse models have significant implications for the development of therapy for patients with neuronopathic GD.

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Authors
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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Hematology

Keywords

  • neurodegeneration, lysosomal storage disorder, glucocerebrosidase deficiency, gene therapy, knockout mice
Original languageEnglish
Pages (from-to)17483-17488
JournalProceedings of the National Academy of Sciences
Volume104
Issue number44
Publication statusPublished - 2007
Publication categoryResearch
Peer-reviewedYes

Bibliographic note

The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Division of Molecular Medicine and Gene Therapy (013022010), Faculty of Medicine (000022000), Brain Repair and Imaging in Neural Systems (BRAINS) (013212027), Pathology, (Lund) (013030000)

Related research output

Berglin-Enquist, I., 2009, Molecular Medicine and Gene Therapy, Lund University. 135 p.

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