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Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
A progressive translational mouse model of human valosin-containing protein disease: the VCP(R155H/+) mouse.
Muscle & Nerve 2013 Februrary
INTRODUCTION: Mutations in the valosin-containing protein (VCP) gene cause hereditary inclusion body myopathy (IBM) associated with Paget disease of bone (PDB), and frontotemporal dementia (FTD). More recently, these mutations have been linked to 2% of familial amyotrophic lateral sclerosis (ALS) cases. A knock-in mouse model offers the opportunity to study VCP-associated pathogenesis.
METHODS: The VCP(R155H/+) knock-in mouse model was assessed for muscle strength and immunohistochemical, Western blot, apoptosis, autophagy, and microPET/CT imaging analyses.
RESULTS: VCP(R155H/+) mice developed significant progressive muscle weakness, and the quadriceps and brain developed progressive cytoplasmic accumulation of TDP-43, ubiquitin-positive inclusion bodies, and increased LC3-II staining. MicroCT analyses revealed Paget-like lesions at the ends of long bones. Spinal cord demonstrated neurodegenerative changes, ubiquitin, and TDP-43 pathology of motor neurons.
CONCLUSIONS: VCP(R155H/+) knock-in mice represent an excellent preclinical model for understanding VCP-associated disease mechanisms and future treatments.
METHODS: The VCP(R155H/+) knock-in mouse model was assessed for muscle strength and immunohistochemical, Western blot, apoptosis, autophagy, and microPET/CT imaging analyses.
RESULTS: VCP(R155H/+) mice developed significant progressive muscle weakness, and the quadriceps and brain developed progressive cytoplasmic accumulation of TDP-43, ubiquitin-positive inclusion bodies, and increased LC3-II staining. MicroCT analyses revealed Paget-like lesions at the ends of long bones. Spinal cord demonstrated neurodegenerative changes, ubiquitin, and TDP-43 pathology of motor neurons.
CONCLUSIONS: VCP(R155H/+) knock-in mice represent an excellent preclinical model for understanding VCP-associated disease mechanisms and future treatments.
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