Defective autophagy is associated with neurodegenerative disorders including Alzheimer, Parkinson and Huntington diseases, amyotrophic lateral sclerosis and SCA (spinocerebellar ataxias). Autophagy defects were detected also in SPG49, a complicated form of hereditary spastic paraparesis (cHSP) associated with mutations in the TECPR2 gene, suggesting a role of autophagy also in this heterogeneous group of neurodegenerative diseases. We recently found defective autophagy in SPG15, another HSP subtype associated with mutations in the ZFYVE26/SPG15 gene. Patient-derived cells (fibroblasts/lymphoblasts) carrying different ZFYVE26 mutations show accumulation of immature autophagosomes and increased MAP1LC3B-II and SQSTM1/p62 levels. These findings indicate that ZFYVE26 is a key determinant of autophagosome maturation, which is impaired when the protein is defective or absent. Replication of these findings in primary neurons supports the relevance of defective autophagy in SPG15-related neurodegeneration.

ZFYVE26/SPASTIZIN : a close link between complicated hereditary spastic paraparesis and autophagy / C. Vantaggiato, E. Clementi, M.T. Bassi. - In: AUTOPHAGY. - ISSN 1554-8627. - 10:2(2014 Feb), pp. 374-375.

ZFYVE26/SPASTIZIN : a close link between complicated hereditary spastic paraparesis and autophagy

E. Clementi
Secondo
;
M.T. Bassi
Ultimo
2014

Abstract

Defective autophagy is associated with neurodegenerative disorders including Alzheimer, Parkinson and Huntington diseases, amyotrophic lateral sclerosis and SCA (spinocerebellar ataxias). Autophagy defects were detected also in SPG49, a complicated form of hereditary spastic paraparesis (cHSP) associated with mutations in the TECPR2 gene, suggesting a role of autophagy also in this heterogeneous group of neurodegenerative diseases. We recently found defective autophagy in SPG15, another HSP subtype associated with mutations in the ZFYVE26/SPG15 gene. Patient-derived cells (fibroblasts/lymphoblasts) carrying different ZFYVE26 mutations show accumulation of immature autophagosomes and increased MAP1LC3B-II and SQSTM1/p62 levels. These findings indicate that ZFYVE26 is a key determinant of autophagosome maturation, which is impaired when the protein is defective or absent. Replication of these findings in primary neurons supports the relevance of defective autophagy in SPG15-related neurodegeneration.
BECN1/Beclin 1; SPG15; ZFYVE26/SPASTIZIN; autophagosome maturation; autophagy; complicated hereditary spastic paraparesis; Adaptor Proteins, Signal Transducing; Autophagy; Brain; Carrier Proteins; Humans; Mutation; Neurodegenerative Diseases; Paraparesis, Spastic; Phagosomes
Settore BIO/14 - Farmacologia
feb-2014
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/327385
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