MicroRNA Modulation in Epileptogenesis and Seizure Management

MicroRNAs are small noncoding RNAs that fine-tune gene expression in neuronal networks and glial cells. In the context of epilepsy, altered microRNA profiles contribute to the transformation of normal circuitry into hyperexcitable networks, a process termed epileptogenesis. Dysregulated microRNAs influence inflammatory pathways, ion channel expression and cell-death programmes such as ferroptosis, thereby affecting seizure threshold and chronic seizure susceptibility. Therapeutic strategies aim either to restore homeostatic microRNA levels or to inhibit pathogenic microRNAs using antisense oligonucleotides, viral vectors or lipid-based carriers. This dual approach holds promise for both antiepileptogenic interventions—to prevent the onset of epilepsy following brain insults—and antiseizure therapies to manage established disease. Advances in delivery methods and target specificity are enhancing the translational potential of microRNA-based treatments. Moreover, circulating and cerebrospinal microRNAs are emerging as noninvasive biomarkers for diagnosis, prognosis and treatment monitoring, with potential to stratify patients and tailor personalised management.

Research from Nature Portfolio

One seminal study profiled extracellular microRNAs in cerebrospinal fluid to distinguish temporal lobe epilepsy from status epilepticus and other neurological conditions. Distinct microRNA signatures reflecting neuronal death, gliosis and inflammation supported differential diagnosis and suggested mechanistic links to disease pathology. Another foundational report evaluated circulating microRNAs in drug-resistant and drug-responsive patients, identifying a panel of deregulated species that correlated with treatment outcome and seizure severity. These discoveries underscored the utility of stable peripheral microRNAs as diagnostic and predictive biomarkers, and highlighted specific microRNAs as potential targets to overcome pharmacoresistance.

MicroRNA Modulation in Epileptogenesis and Seizure Management publication trend

The graph below shows the total number of articles in microrna modulation in epileptogenesis and seizure management across all publications each year (not limited to Nature Index journals).

Technical terms

microRNA: Small noncoding RNA that post-transcriptionally regulates gene expression.

Epileptogenesis: The process by which a normal brain becomes prone to recurrent seizures.

Ferroptosis: Iron-dependent form of regulated cell death characterised by lipid peroxidation.

Voltage-gated sodium channel (VGSC): Membrane protein that initiates and propagates action potentials.

Biomarker: A measurable indicator of a biological state or condition, used for diagnosis or prognosis.

Astrocyte: Glial cell involved in neurotransmitter clearance, metabolic support and inflammatory responses.

References

1. Cerebrospinal fluid microRNAs are potential biomarkers of temporal lobe epilepsy and status epilepticus. Scientific Reports (2017).
2. Circulating microRNAs are promising novel biomarkers for drug-resistant epilepsy. Scientific Reports (2015).
3. The microRNA-211-5p/P2RX7/ERK/GPX4 axis regulates epilepsy-associated neuronal ferroptosis and oxidative stress. Journal of Neuroinflammation (2024).
4. MicroRNA-335-5p suppresses voltage-gated sodium channel expression and may be a target for seizure control. Proceedings of the National Academy of Sciences of the United States of America (2023).