Impaired proteasome activity and neurodegeneration with brain iron accumulation in FBXO7 defect

Fecha de publicación: Fecha Ahead of Print:

Autores de CIPF

  • Vincenzo Lupo

    Autor

  • Paula Sancho Salmerón

    Autor

  • Sandra Fernández Rodríguez

    Autor

  • Cristina Aisha Tello Vicente

    Autor

  • Laura Ramirez Jimenez

    Autor

Participantes ajenos a CIPF

  • Correa-Vela, M
  • Montpeyo, M
  • Marce-Grau, A
  • Hernandez-Vara, J
  • Darling, A
  • Jenkins, A
  • Perez, B
  • Sanchez-Montanez, A
  • Macaya, A
  • Sobrido, MJ
  • Martinez-Vicente, M
  • Perez-Duenas, B

Grupos de Investigación

Abstract

FBXO7 is implicated in the ubiquitin-proteasome system and parkin-mediated mitophagy. FBXO7defects cause a levodopa-responsive parkinsonian-pyramidal syndrome(PPS). Methods: We investigated the disease molecular bases in a child with PPS and brain iron accumulation. Results: A novel homozygous c.368C>G (p.S123*) FBXO7 mutation was identified in a child with spastic paraplegia, epilepsy, cerebellar degeneration, levodopa nonresponsive parkinsonism, and brain iron deposition. Patient's fibroblasts assays demonstrated an absence of FBXO7 RNA expression leading to impaired proteasome degradation and accumulation of poly-ubiquitinated proteins. Conclusion: This novel FBXO7 phenotype associated with impaired proteasome activity overlaps with neurodegeneration with brain iron accumulation disorders.

Datos de la publicación

ISSN/ISSNe:
2328-9503, 2328-9503

Annals of Clinical and Translational Neurology  John Wiley and Sons Inc.

Tipo:
Article
Páginas:
1436-1442
PubMed:
32767480

Citas Recibidas en Web of Science: 24

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