Role of Mutations of Mitochondrial Aminoacyl-tRNA Synthetases Genes on Epileptogenesis

Mol Neurobiol. 2023 Sep;60(9):5482-5492. doi: 10.1007/s12035-023-03429-1. Epub 2023 Jun 14.

Abstract

Mitochondria are the structures in cells that are responsible for producing energy. They contain a specific translation unit for synthesizing mitochondria-encoded respiratory chain components: the mitochondrial DNA (mt DNA). Recently, a growing number of syndromes associated with the dysfunction of mt DNA translation have been reported. However, the functions of these diseases still need to be precise and thus attract much attention. Mitochondrial tRNAs (mt tRNAs) are encoded by mt DNA; they are the primary cause of mitochondrial dysfunction and are associated with a wide range of pathologies. Previous research has shown the role of mt tRNAs in the epileptic mechanism. This review will focus on the function of mt tRNA and the role of mitochondrial aminoacyl-tRNA synthetase (mt aaRS) in order to summarize some common relevant mutant genes of mt aaRS that cause epilepsy and the specific symptoms of the disease they cause.

Keywords: Aminoacyl-tRNA synthetase; Epilepsy; Mitochondrial disorders; Mitochondrial tRNA.

Publication types

  • Review

MeSH terms

  • Amino Acyl-tRNA Synthetases* / genetics
  • Amino Acyl-tRNA Synthetases* / metabolism
  • Epilepsy* / pathology
  • Humans
  • Mitochondria / metabolism
  • Mutation / genetics
  • Protein Biosynthesis
  • RNA, Transfer / genetics
  • RNA, Transfer / metabolism

Substances

  • Amino Acyl-tRNA Synthetases
  • RNA, Transfer