PTG protein depletion rescues malin-deficient Lafora disease in mouse.

Abstract:

:Ubiquitin ligases regulate quantities and activities of target proteins, often pleiotropically. The malin ubiquitin E3 ligase is reported to regulate autophagy, the misfolded protein response, microRNA silencing, Wnt signaling, neuronatin-mediated endoplasmic reticulum stress, and the laforin glycogen phosphatase. Malin deficiency causes Lafora disease, pathologically characterized by neurodegeneration and accumulations of malformed glycogen (Lafora bodies). We show that reducing glycogen production in malin-deficient mice by genetically removing PTG, a glycogen synthesis activator protein, nearly completely eliminates Lafora bodies and rescues the neurodegeneration, myoclonus, seizure susceptibility, and behavioral abnormality. Glycogen synthesis downregulation is a potential therapy for the fatal adolescence onset epilepsy Lafora disease.

journal_name

Ann Neurol

journal_title

Annals of neurology

authors

Turnbull J,Epp JR,Goldsmith D,Zhao X,Pencea N,Wang P,Frankland PW,Ackerley CA,Minassian BA

doi

10.1002/ana.24104

subject

Has Abstract

pub_date

2014-03-01 00:00:00

pages

442-6

issue

3

eissn

0364-5134

issn

1531-8249

journal_volume

75

pub_type

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