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NDUFA10 mutations cause complex I deficiency in a patient with Leigh disease. 2011

Saskia J G Hoefs, and Francjan J van Spronsen, and Ellen W H Lenssen, and Leo G Nijtmans, and Richard J Rodenburg, and Jan A M Smeitink, and Lambert P van den Heuvel
Department of Paediatrics, Nijmegen Centre for Mitochondrial Disorders, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.

Mitochondrial complex I deficiency is the most common defect of the oxidative phosphorylation system. We report a patient with Leigh syndrome who showed a complex I deficiency expressed in cultured fibroblasts and muscle tissue. To find the genetic cause of the complex I deficiency, we screened the mitochondrial DNA and the nuclear-encoded subunits of complex I. We identified compound-heterozygous mutations in the NDUFA10 gene, encoding an accessory subunit of complex I. The first mutation disrupted the start codon and the second mutation resulted in an amino acid substitution. The fibroblasts of the patient displayed decreased amount and activity, and a disturbed assembly of complex I. These results indicate that NDUFA10 is a novel candidate gene to screen for disease-causing mutations in patients with complex I deficiency.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D007888 Leigh Disease A group of metabolic disorders primarily of infancy characterized by the subacute onset of psychomotor retardation, hypotonia, ataxia, weakness, vision loss, eye movement abnormalities, seizures, dysphagia, and lactic acidosis. Pathological features include spongy degeneration of the neuropile of the basal ganglia, thalamus, brain stem, and spinal cord. Patterns of inheritance include X-linked recessive, autosomal recessive, and mitochondrial. Leigh disease has been associated with mutations in genes for the PYRUVATE DEHYDROGENASE COMPLEX; CYTOCHROME-C OXIDASE; ATP synthase subunit 6; and subunits of mitochondrial complex I. (From Menkes, Textbook of Child Neurology, 5th ed, p850). Encephalomyelitis, Subacute Necrotizing,Encephalopathy, Subacute Necrotizing,Encephalomyelopathy, Subacute Necrotizing,Encephalopathy, Subacute Necrotizing, Infantile,Encephalopathy, Subacute Necrotizing, Juvenile,Infantile Leigh Disease,Infantile Subacute Necrotizing Encephalopathy,Juvenile Leigh Disease,Juvenile Subacute Necrotizing Encephalopathy,Leigh Disease, Infantile,Leigh Disease, Juvenile,Leigh Syndrome,Leigh's Disease,Subacute Necrotizing Encephalomyelitis, Infantile,Subacute Necrotizing Encephalomyelopathy,Subacute Necrotizing Encephalopathy,Subacute Necrotizing Encephalopathy, Infantile,Subacute Necrotizing Encephalopathy, Juvenile,Disease, Leigh's,Encephalomyelitides, Subacute Necrotizing,Encephalomyelopathies, Subacute Necrotizing,Encephalopathies, Subacute Necrotizing,Leighs Disease,Necrotizing Encephalomyelitides, Subacute,Necrotizing Encephalomyelitis, Subacute,Necrotizing Encephalomyelopathies, Subacute,Necrotizing Encephalomyelopathy, Subacute,Necrotizing Encephalopathies, Subacute,Necrotizing Encephalopathy, Subacute,Subacute Necrotizing Encephalomyelitides,Subacute Necrotizing Encephalomyelitis,Subacute Necrotizing Encephalomyelopathies,Subacute Necrotizing Encephalopathies
D008297 Male Males
D008928 Mitochondria Semiautonomous, self-reproducing organelles that occur in the cytoplasm of all cells of most, but not all, eukaryotes. Each mitochondrion is surrounded by a double limiting membrane. The inner membrane is highly invaginated, and its projections are called cristae. Mitochondria are the sites of the reactions of oxidative phosphorylation, which result in the formation of ATP. They contain distinctive RIBOSOMES, transfer RNAs (RNA, TRANSFER); AMINO ACYL T RNA SYNTHETASES; and elongation and termination factors. Mitochondria depend upon genes within the nucleus of the cells in which they reside for many essential messenger RNAs (RNA, MESSENGER). Mitochondria are believed to have arisen from aerobic bacteria that established a symbiotic relationship with primitive protoeukaryotes. (King & Stansfield, A Dictionary of Genetics, 4th ed) Mitochondrial Contraction,Mitochondrion,Contraction, Mitochondrial,Contractions, Mitochondrial,Mitochondrial Contractions
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D009245 NADH Dehydrogenase A flavoprotein and iron sulfur-containing oxidoreductase that catalyzes the oxidation of NADH to NAD. In eukaryotes the enzyme can be found as a component of mitochondrial electron transport complex I. Under experimental conditions the enzyme can use CYTOCHROME C GROUP as the reducing cofactor. The enzyme was formerly listed as EC 1.6.2.1. NADH Cytochrome c Reductase,Diaphorase (NADH Dehydrogenase),NADH (Acceptor) Oxidoreductase,NADH Cytochrome c Oxidoreductase,Dehydrogenase, NADH
D010085 Oxidative Phosphorylation Electron transfer through the cytochrome system liberating free energy which is transformed into high-energy phosphate bonds. Phosphorylation, Oxidative,Oxidative Phosphorylations,Phosphorylations, Oxidative
D002467 Cell Nucleus Within a eukaryotic cell, a membrane-limited body which contains chromosomes and one or more nucleoli (CELL NUCLEOLUS). The nuclear membrane consists of a double unit-type membrane which is perforated by a number of pores; the outermost membrane is continuous with the ENDOPLASMIC RETICULUM. A cell may contain more than one nucleus. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed) Cell Nuclei,Nuclei, Cell,Nucleus, Cell
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D004272 DNA, Mitochondrial Double-stranded DNA of MITOCHONDRIA. In eukaryotes, the mitochondrial GENOME is circular and codes for ribosomal RNAs, transfer RNAs, and about 10 proteins. Mitochondrial DNA,mtDNA

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