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    Covalent RNA modifications were recently rediscovered as abundant RNA chemical tags. Similarly to DNA epigenetic modifications, they have been proposed as essential regulators of gene expression. Here we focus on 3 of the most abundant adenosine methylations: N6-methyladenosine (m6 A), N6,2'-O-dimethyladenosine (m6 Am) and N1-methyladenosine (m1 A). We review the potential role of these modifications on mature mRNA in regulating gene expression within the adult brain, nervous system function and normal and pathological behavior. Dynamic mRNA modifications, summarized as the epitranscriptome, regulate transcript maturation, translation and decay, and thus crucially determine gene expression beyond primary transcription regulation. However, the extent of this regulation in the healthy and maladapted adult brain is poorly understood. Analyzing this novel layer of gene expression control in addition to epigenetics and posttranslational regulation of proteins will be highly relevant for understanding the molecular underpinnings of behavior and psychiatric disorders. © 2017 John Wiley & Sons Ltd and International Behavioural and Neural Genetics Society.


    M Engel, A Chen. The emerging role of mRNA methylation in normal and pathological behavior. Genes, brain, and behavior. 2017 Oct 13

    PMID: 29027751

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