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Mol Ther. 2016 May;24(5):877-89. doi: 10.1038/mt.2016.32. Epub 2016 Feb 5.

Gene Transfer of Brain-derived Neurotrophic Factor (BDNF) Prevents Neurodegeneration Triggered by FXN Deficiency.

Author information

1
Centro de Biología Molecular Severo Ochoa (UAM-CSIC) and Departamento de Biología Molecular, Universidad Autónoma de Madrid (UAM), Madrid, Spain.
2
Instituto de Investigaciones Sanitarias Hospital Puerta de Hierro-Majadahonda (IDIPHIM), Madrid, Spain.
3
Current address: Hospital Infantil de México "Federico Gómez", México, D.F., México.

Abstract

Friedreich's ataxia is a predominantly neurodegenerative disease caused by recessive mutations that produce a deficiency of frataxin (FXN). Here, we have used a herpesviral amplicon vector carrying a gene encoding for brain-derived neurotrophic factor (BDNF) to drive its overexpression in neuronal cells and test for its effect on FXN-deficient neurons both in culture and in the mouse cerebellum in vivo. Gene transfer of BDNF to primary cultures of mouse neurons prevents the apoptosis which is triggered by the knockdown of FXN gene expression. This neuroprotective effect of BDNF is also observed in vivo in a viral vector-based knockdown mouse cerebellar model. The injection of a lentiviral vector carrying a minigene encoding for a FXN-specific short hairpin ribonucleic acid (shRNA) into the mouse cerebellar cortex triggers a FXN deficit which is accompanied by significant apoptosis of granule neurons as well as loss of calbindin in Purkinje cells. These pathological changes are accompanied by a loss of motor coordination of mice as assayed by the rota-rod test. Coinjection of a herpesviral vector encoding for BDNF efficiently prevents both the development of cerebellar neuropathology and the ataxic phenotype. These data demonstrate the potential therapeutic usefulness of neurotrophins like BDNF to protect FXN-deficient neurons from degeneration.

PMID:
26849417
PMCID:
PMC4881769
DOI:
10.1038/mt.2016.32
[Indexed for MEDLINE]
Free PMC Article

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