# Dravet Syndrome Patient-Derived Neural Cells Present Altered Levels of Potassium, Copper, and Zinc

## TL;DR

Dravet syndrome patient-derived neural cells show higher levels of potassium, copper, and zinc, which may contribute to the disease's progression and seizures.

## Contribution

This study reveals elemental imbalances in Dravet syndrome neural cells using synchrotron X-ray analysis and patient-derived iPS cells.

## Key findings

- DS-derived neural cells have elevated potassium, copper, and zinc levels.
- Elemental imbalances may play a role in the pathogenesis of Dravet syndrome.
- Using iPS cells to model DS provides insights into disease mechanisms and potential treatments.

## Abstract

Dravet syndrome (DS),
also known as severe myoclonic
epilepsy of
infancy (SMEI), is an intractable epilepsy syndrome. Most cases are
associated with mutations in the SCN1A gene, which is responsible
for the expression of the sodium voltage-gated channel alpha subunit
1, Nav1.1. These mutations lead to altered neuronal firing and a state
of hyperexcitability. DS has been studied using patient samples, animal
models, and more recently, iPS cells derived from DS patients. In
this work, we sought to understand the impact that Nav1.1 loss-of-function
has on the elementary chemical constitution of DS patient-derived
neural cells. iPS cells from DS patients and controls were differentiated
into neural-induced spheroids, and synchrotron X-ray radiation was
used to assess alterations in their elemental concentration. We observed
that DS-derived neural cells present elevated levels of potassium
(K), copper (Cu), and zinc (Zn). These findings suggest that an elemental
imbalance may be involved in the pathogenesis of DS, as higher levels
of K, Cu, and Zn have been implicated in seizure episodes and epilepsy.
We conclude that modeling DS using cell reprogramming is a relevant
approach to understanding the basic mechanisms involved in this disease
and perhaps provide novel treatment strategies.