Spinal muscular atrophy-like phenotype in a mouse model of acid ceramidase deficiency

Autor: Murtaza S. Nagree, Jitka Rybova, Annie Kleynerman, Carissa J. Ahrenhoerster, Jennifer T. Saville, TianMeng Xu, Maxwell Bachochin, William M. McKillop, Michael W. Lawlor, Alexey V. Pshezhetsky, Olena Isaeva, Matthew D. Budde, Maria Fuller, Jeffrey A. Medin
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Communications Biology, Vol 6, Iss 1, Pp 1-20 (2023)
Druh dokumentu: article
ISSN: 2399-3642
DOI: 10.1038/s42003-023-04932-w
Popis: Abstract Mutations in ASAH1 have been linked to two allegedly distinct disorders: Farber disease (FD) and spinal muscular atrophy with progressive myoclonic epilepsy (SMA-PME). We have previously reported FD-like phenotypes in mice harboring a single amino acid substitution in acid ceramidase (ACDase), P361R, known to be pathogenic in humans (P361R-Farber). Here we describe a mouse model with an SMA-PME-like phenotype (P361R-SMA). P361R-SMA mice live 2-3-times longer than P361R-Farber mice and have different phenotypes including progressive ataxia and bladder dysfunction, which suggests neurological dysfunction. We found profound demyelination, loss of axons, and altered sphingolipid levels in P361R-SMA spinal cords; severe pathology was restricted to the white matter. Our model can serve as a tool to study the pathological effects of ACDase deficiency on the central nervous system and to evaluate potential therapies for SMA-PME.
Databáze: Directory of Open Access Journals
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