MicroRNA dysregulation in neuropsychiatric disorders and cognitive dysfunction
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Published on: July 11, 2025
Bin Xu1, Pei-Ken Hsu, Maria Karayiorgou
1Department of Physiology & Cellular Biophysics, Columbia University, New York, NY, USA.
Abstract:
MicroRNAs (miRNA), a class of non-coding RNAs, are emerging as important modulators of neuronal development, structure and function. A connection has been established between abnormalities in miRNA expression and miRNA-mediated gene regulation and psychiatric and neurodevelopmental disorders as well as cognitive dysfunction. Establishment of this connection has been driven by progress in elucidating the genetic etiology of these phenotypes and has provided a context to interpret additional supporting evidence accumulating from parallel expression profiling studies in brains and peripheral blood of patients. Here we review relevant evidence that supports this connection and explore possible mechanisms that underlie the contribution of individual miRNAs and miRNA-related pathways to the pathogenesis and pathophysiology of these complex clinical phenotypes. The existing evidence provides useful hypotheses for further investigation as well as important clues for identifying novel therapeutic targets.
Insights
MicroRNAs (miRNAs) are key regulators of brain function. Abnormalities in miRNA expression are linked to neurodevelopmental disorders, cognitive dysfunction, and psychiatric conditions, offering potential therapeutic targets.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- MicroRNAs (miRNAs) are critical non-coding RNAs influencing neuronal development, structure, and function.
- Aberrant miRNA expression and regulation are implicated in psychiatric and neurodevelopmental disorders, alongside cognitive impairments.
Purpose of the Study:
- To review evidence linking miRNA dysregulation to complex neurological and psychiatric conditions.
- To explore the mechanistic roles of specific miRNAs and pathways in disease pathogenesis.
Main Methods:
- Review of existing scientific literature and expression profiling studies.
- Analysis of genetic etiology and miRNA-mediated gene regulation in patient cohorts.
Main Results:
- Established connection between miRNA abnormalities and neurological/psychiatric disorders.
- Identified potential miRNA-related pathways contributing to disease pathophysiology.
Conclusions:
- MiRNA dysregulation is a significant factor in the pathogenesis of complex brain disorders.
- Further research into miRNAs offers promising avenues for novel therapeutic strategies.
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