Loss of tubulin deglutamylase CCP1 causes infantile-onset neurodegeneration.

Shashi, Vandana; Magiera, Maria M; Klein, Dennis; Zaki, Maha; Schoch, Kelly; Rudnik-Schöneborn, Sabine; Norman, Andrew; Lopes Abath Neto, Osorio; Dusl, Marina; Yuan, Xidi; Bartesaghi, Luca; De Marco, Patrizia; Alfares, Ahmed A; Marom, Ronit; Arold, Stefan T; Guzmán-Vega, Francisco J; Pena, Loren Dm; Smith, Edward C; Steinlin, Maja; Babiker, Mohamed Oe; ... (2018). Loss of tubulin deglutamylase CCP1 causes infantile-onset neurodegeneration. The EMBO Journal, 37(23) EMBO Press 10.15252/embj.2018100540

Text e100540.full.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (1MB)

A set of glutamylases and deglutamylases controls levels of tubulin polyglutamylation, a prominent post-translational modification of neuronal microtubules. Defective tubulin polyglutamylation was first linked to neurodegeneration in the () mouse, which lacks deglutamylase CCP1, displays massive cerebellar atrophy, and accumulates abnormally glutamylated tubulin in degenerating neurons. We found biallelic rare and damaging variants in the gene encoding CCP1 in 13 individuals with infantile-onset neurodegeneration and confirmed the absence of functional CCP1 along with dysregulated tubulin polyglutamylation. The human disease mainly affected the cerebellum, spinal motor neurons, and peripheral nerves. We also demonstrate previously unrecognized peripheral nerve and spinal motor neuron degeneration in mice, which thus recapitulated key features of the human disease. Our findings link human neurodegeneration to tubulin polyglutamylation, entailing this post-translational modification as a potential target for drug development for neurodegenerative disorders.

Interest & Impact

Downloads

1 since deposited on 30 Jan 2019
0 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item