WONOEP appraisal: Modeling early onset epilepsies.

Area of Science:

• Neurobiology
• Developmental Neuroscience
• Epileptology

Background:

• Early-onset epilepsies often present in neonates and young children.
• These conditions can be severe, leading to developmental deficits, intellectual disability, and medication resistance.
• Adult models inadequately represent age-specific brain development, limiting translatability for pediatric epilepsy.

Purpose of the Study:

• To review and discuss various modeling approaches for early-onset epilepsies.
• To highlight the advantages and disadvantages of different models in preclinical research.
• To emphasize the need for a combination of models to address unmet needs in pediatric epilepsy.

Main Methods:

• Overview of discussions from the XVI Workshop on Neurobiology of Epilepsy (2022).
• Review of heterologous expression systems, zebrafish models, immature rodent models, and brain organoids.
• Analysis of model suitability for studying mechanisms and validating treatments for early-onset epilepsies.

Main Results:

• No single model perfectly replicates pediatric epilepsy.
• Immature animal models and brain organoids offer improved representation of early brain development compared to adult models.
• Simplified, high-throughput models are crucial for screening numerous epilepsy genes and potential therapies.

Conclusions:

• A combination of diverse modeling strategies, including heterologous expression, zebrafish, immature rodents, and organoids, is essential for advancing pediatric epilepsy research.
• These models accelerate hypothesis generation and the discovery of novel therapeutic targets for early-onset epilepsies.
• Improved, age-appropriate models are critical for addressing the complexities and unmet needs of pediatric epilepsy patients.