Document Type
Article
Publication Date
3-8-2018
JAX Source
Nat Commun 2018 Mar 8; 9(1):1007.
Volume
9
Issue
1
First Page
1007
Last Page
1007
ISSN
2041-1723
PMID
29520015
DOI
https://doi.org/10.1038/s41467-018-03461-z
Grant
NS054154
Abstract
Dominant mutations in glycyl-tRNA synthetase (GlyRS) cause a subtype of Charcot-Marie-Tooth neuropathy (CMT2D). Although previous studies have shown that GlyRS mutants aberrantly interact with Nrp1, giving insight into the disease's specific effects on motor neurons, these cannot explain length-dependent axonal degeneration. Here, we report that GlyRS mutants interact aberrantly with HDAC6 and stimulate its deacetylase activity on α-tubulin. A decrease in α-tubulin acetylation and deficits in axonal transport are observed in mice peripheral nerves prior to disease onset. An HDAC6 inhibitor used to restore α-tubulin acetylation rescues axonal transport deficits and improves motor functions of CMT2D mice. These results link the aberrant GlyRS-HDAC6 interaction to CMT2D pathology and suggest HDAC6 as an effective therapeutic target. Moreover, the HDAC6 interaction differs from Nrp1 interaction among GlyRS mutants and correlates with divergent clinical presentations, indicating the existence of multiple and different mechanisms in CMT2D. Nat Commun 2018 Mar 8; 9(1):1007.
Recommended Citation
Mo Z,
Zhao X,
Liu H,
Hu Q,
Chen X,
Pham J,
Wei N,
Liu Z,
Zhou J,
Burgess RW,
Pfaff S,
Caskey C,
Wu C,
Bai G,
Yang X.
Aberrant GlyRS-HDAC6 interaction linked to axonal transport deficits in Charcot-Marie-Tooth neuropathy. Nat Commun 2018 Mar 8; 9(1):1007.
Comments
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