NDLI: Mutation in the Novel Nuclear-Encoded Mitochondrial Protein CHCHD10 in a Family with Autosomal Dominant Mitochondrial Myopathy

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Mutation in the Novel Nuclear-Encoded Mitochondrial Protein CHCHD10 in a Family with Autosomal Dominant Mitochondrial Myopathy

Content Provider	PubMed Central
Author	Senda, Ajroud-driss Fecto, Faisal Ajroud, Kaouther Irfan, Lalani Calvo, Sarah E. Mootha, Vamsi K. Deng, Han-xiang Siddique, Nailah Tahmoush, Albert J. Heiman-patterson, Terry D. Siddique, Teepu
Abstract	Mitochondrial myopathies belong to a larger group of systemic diseases caused by morphological or biochemical abnormalities of mitochondria. Mitochondrial disorders can be caused by mutations in either the mitochondrial or the nuclear genome. Only 5% of all mitochondrial disorders are autosomal dominant. We analyzed DNA from members of a previously reported Puerto Rican kindred with an autosomal dominant mitochondrial myopathy (Heimann-Patterson et al. 1997). Linkage analysis suggested a putative locus on the pericentric region of the long arm of chromosome 22 (22q11). Using the tools of integrative genomics, we established C22orf16 (later designated as CHCHD10) as the only high scoring mitochondrial candidate gene in our minimal candidate region. Sequence analysis revealed a double missense mutation (R15S; G58R) in cis in CHCHD10 which encodes a coiled-coil helix coiled-coil helix protein of unknown function. These two mutations completely co-segregated with the disease phenotype and were absent in 1481 Caucasian and 80 Hispanic (including 32 Puerto Rican) controls. Expression profiling showed that CHCHD10 is enriched in skeletal muscle. Mitochondrial localization of the CHCHD10 protein was confirmed using immunofluorescence in cells expressing either wild-type or mutant CHCHD10. We found that expression of the G58R, but not the R15S, mutation induced mitochondrial fragmentation. Our findings identify a novel gene causing mitochondrial myopathy, thereby expanding the spectrum of mitochondrial myopathies caused by nuclear genes. Our findings also suggest a role for CHCHD10 in the morphologic remodeling of the mitochondria.
Related Links	http://dx.doi.org/10.1007/s10048-014-0421-1
Ending Page	9
Page Count	9
Starting Page	1
File Format	PDF
ISSN	13646745
e-ISSN	13646753
Journal	Neurogenetics
Issue Number	1
Volume Number	16
Language	English
Publisher Date	2015-01-01
Access Restriction	Open
Subject Keyword	Genetics(clinical) Genetics Cellular and Molecular Neuroscience Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Genetics Cellular and Molecular Neuroscience Genetics (clinical)

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