Mouse models to elucidate the functional roles of adenosine-to-inosine editing.

Rula EY, Emeson RB
Methods Enzymol. 2007 424: 333-67

PMID: 17662849 · DOI:10.1016/S0076-6879(07)24016-9

The conversion of adenosine to inosine (A-to-I) by RNA editing is a widespread RNA processing event by which genomically encoded sequences are altered through site-specific deamination of adenosine residue(s) in RNA transcripts through the actions of a family of double-stranded RNA-specific adenosine deaminases (ADARs). While significant advances have been made regarding the functional consequences of A-to-I editing using heterologous expression systems, the physiological relevance of such RNA modifications in mammals has been addressed effectively using gene-targeting strategies in mice via homologous recombination in embryonic stem (ES) cells. These gene-targeting approaches have allowed the generation of mutant mouse strains in which site-specific editing events can be fixed in the fully edited or nonedited state for individual ADAR targets, expression of ADAR proteins can be selectively ablated, or a combination of ADAR elimination and ADAR target modification can be used for a more in-depth understanding of the biological consequences of A-to-I editing dysregulation.

MeSH Terms (15)

Adenosine Animals Base Sequence Inosine Ion Channels Mice Mice, Transgenic Molecular Sequence Data Mutation Nucleic Acid Conformation Potassium Channels Protein Structure, Tertiary Receptor, Serotonin, 5-HT2C RNA Editing Substrate Specificity

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