Disorders of nuclear-mitochondrial intergenomic signalling.

TitleDisorders of nuclear-mitochondrial intergenomic signalling.
Publication TypeJournal Article
Year of Publication1997
AuthorsZeviani, M, Petruzzella, V, Carrozzo, R
JournalJ Bioenerg Biomembr
Volume29
Issue2
Pagination121-30
Date Published1997 Apr
ISSN0145-479X
KeywordsCell Nucleus, DNA, Mitochondrial, Gene Deletion, Genetic Diseases, Inborn, Humans, Mitochondria, Mitochondrial Encephalomyopathies, Pedigree, Signal Transduction, Syndrome
Abstract

In addition to sporadic or maternally-inherited mutations of the mitochondrial genome, abnormalities of mtDNA can be transmitted as mendelian traits. The latter are believed to be caused by mutations in still unknown nuclear genes, which deleteriously interact with the mitochondrial genome. Two groups of mtDNA-related mendelian disorders are known: those associated with mtDNA large-scale rearrangements and those characterized by severe reduction of the mtDNA copy number. The most frequent presentation of the first group of disorders is an adult-onset encephalomyopathy, defined clinically by the syndrome of progressive external ophthalmoplegia "plus", genetically by autosomal dominant transmission of the trait, and molecularly by the presence of multiple deletions of mtDNA. The second group of disorders comprises early-onset, organ-specific syndromes, associated with mtDNA depletion, that are presumably transmitted as autosomal recessive traits. Linkage analysis and search for candidate genes are two complementary strategies to clarify the molecular basis of these disorders of the nuclear-mitochondrial intergenomic signalling.

DOI10.1023/a:1022633912917
Alternate JournalJ. Bioenerg. Biomembr.
Citation Key10.1023/a:1022633912917
PubMed ID9239538
Grant List767 / / Telethon / Italy