Journal
JOURNAL OF NEUROSCIENCE
Volume 26, Issue 3, Pages 810-820Publisher
SOC NEUROSCIENCE
DOI: 10.1523/JNEUROSCI.4162-05.2006
Keywords
ATP6; ANT; ATP synthase; neurodegeneration; muscle degeneration; aging; mitochondria
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Funding
- NCRR NIH HHS [RR01219, P41 RR001219] Funding Source: Medline
- NINDS NIH HHS [T32NS07391-07, T32 NS007391] Funding Source: Medline
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Mitochondrial encephalomyopathies are common and devastating multisystem genetic disorders characterized by neuromuscular dysfunction and tissue degeneration. Point mutations in the human mitochondrial ATP6 gene are known to cause several related mitochondrial disorders: NARP( neuropathy, ataxia, and retinitis pigmentosa), MILS ( maternally inherited Leigh's syndrome), and FBSN ( familial bilateral striatal necrosis). We identified a pathogenic mutation in the Drosophila mitochondrial ATP6 gene that causes progressive, adult-onset neuromuscular dysfunction and myodegeneration. Our results demonstrate ultrastructural defects in the mitochondrial innermembrane, neural dysfunction, and a marked reduction in mitochondrial ATP synthase activity associated with this mutation. This Drosophila mutant recapitulates key features of the human neuromuscular disorders enabling detailed in vivo studies of these enigmatic diseases.
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