Cited by 88Lysosomal Storage Disorders ResearchMetabolism and Genetic DisordersGlycogen Storage Diseases and Myoclonus

Enzyme, cell and gene‐based therapies for metachromatic leukodystrophy

Sevin, C., Aubourg, P., Cartier, N.·2007·Journal of Inherited Metabolic Disease

Abstract

Summary: Metachromatic leukodystrophy (MLD) is a demyelinating storage disease caused by deficiency of the lysosomal enzyme arylsulfatase A (ARSA). Lack of ARSA activity leads to the accumulation of galactosylceramide‐3‐O‐sulfate (sulfatide) in the central and peripheral nervous systems. Based on the age at onset, the disease is usually classified into three forms: the late‐infantile form, which manifests in the second year of life; the juvenile variants (onset between 4 and 12 years), which are subdivided into early‐juvenile (EJ, onset before 6 years) and late‐juvenile (LJ, onset after 6 years); and the adult form (onset after 12 years of age). Currently, there is no efficient therapy for the late‐infantile form of MLD (50% of the patients), death occurring within a few years after onset of neurological symptoms. Allogeneic haematopoietic cell transplantation (HCT), when performed at a very early stage of the disease, may improve selected patients with juvenile or adult forms of MLD. As with other lysosomal storage diseases, the physiopathology of MLD is poorly understood. Demyelination is the main pathological finding, but substantial storage of sulfatides in neurons also occurs, and may contribute to the clinical phenotype. The physiopathological process leading to neuronal and glial cell degeneration and apoptosis involves accumulation of undegraded sulfatides but also secondary abnormalities (storage/mislocalization of unrelated lipids, inflammatory processes). This review summarizes the recent advances in the understanding of the physiopathology of MLD and the new therapeutic perspectives currently under preclinical investigation, including enzyme replacement therapy, gene therapy and cell therapy.

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Crossref · 10.1007/s10545-007-0540-z

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Authors
Sevin, C., Aubourg, P., & Cartier, N.
Affiliations
Inserm (FR)
Corresponding author
Cartier, N.
Venue
Journal of Inherited Metabolic Disease
Publisher
Wiley
Published
2007-03-08
Volume
30
Issue
2
Pages
175-183
ISSN
  • 0141-8955 (ISSN-L)
  • 1573-2665
OpenAlex
W2158767137
Cited by
88
References
84
Citations by year
2025: 4 · 2024: 2 · 2023: 5 · 2022: 7 · 2021: 5 · 2020: 4 · 2019: 2 · 2018: 3 · 2017: 4 · 2016: 6 · 2015: 3 · 2014: 5 · 2013: 4 · 2012: 5
FWCI
0.83
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Inherited Metabolic Disease (publishedVersion)
  • PubMed (publishedVersion)
Funders
Fondation pour la Recherche Médicale
Topics
  • Health Sciences › Medicine › Physiology › Lysosomal Storage Disorders Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Health Sciences › Medicine › Rheumatology › Glycogen Storage Diseases and Myoclonus
Keywords
metachromatic leukodystrophy, sulfatide accumulation, demyelination, lysosomal storage disease, late infantile MLD, allogeneic haematopoietic cell transplantation, enzyme replacement therapy, gene therapy, cell therapy, pathophysiology, neuronal apoptosis
MeSH terms
Animals, Disease Models, Animal, Enzymes, Humans, Leukodystrophy, Metachromatic, Genetic Therapy, Stem Cell Transplantation, Enzyme Therapy

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