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Home NEWS Science News Neuroscience

Scientists track down possible new treatment for epilepsy

Bioengineer by Bioengineer
September 26, 2016
in Neuroscience
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Increasing the concentration of specific fats in the brain could suppress epileptic seizures. This is evident from ground-breaking research carried out by the research groups of Professor Patrik Verstreken (VIB-KU Leuven) and Professor Wim Versées (VIB-Vrije Universiteit Brussel). The results of their close collaboration have been published in the leading trade journal Nature Structural & Molecular Biology.

brain

Professor Patrik Verstreken specializes in brain research, focusing on synapses. These are the junctions between two nerve cells where electrical signals are transmitted. In various brain disorders — such as Parkinson’s disease — there is impaired communication at these synapses.

Professor Wim Versées examines the processes which take place in our cells, right down to the level of individual molecules and atoms. By figuring out the three-dimensional structures of protein molecules, he tries to obtain crucial information about their role in the cell and the mechanisms which underlie various disorders.

The key role of TBC1D24

In earlier research involving fruit flies, Professor Verstreken had already demonstrated that a protein known as ‘Skywalker’ plays a crucial role in maintaining communication between brain cells. An almost identical protein operates in the human brain under the name ‘TBC1D24’.

Professor Patrik Verstreken (VIB-KU Leuven): “Genetic mutations of the protein TBC1D24 cause a deviation known as the DOOR syndrome. Alongside deafness, deformed nails, brittle bones and mental retardation, this serious genetic disorder is characterized by neurodegeneration, movement disorders and epilepsy.”

Analysis with atomic precision

By joining forces with Professor Wim Versées at the VIB research center for structural biology, the scientists were able to figure out the three-dimensional structure of Skywalker, making it possible to study the protein in microscopic detail.

Professor Wim Versées (VIB-Vrije Universiteit Brussel): “Looking at Skywalker in this way gave us completely new insights into the precise function of this protein, and therefore also the function of the human protein TBC1D24. Among other things, we discovered that it connects with specific brain fats. And more importantly, this connection is impaired in over 70% of patients with a TBC1D24 mutation.”

Suppression of epileptic seizures

On the basis of this discovery, the scientists increased the concentration of specific brain fats in fruit flies with a Skywalker mutation. What happened? The epileptic seizures in the sick fruit flies were completely suppressed.

Professor Patrik Verstreken (VIB-KU Leuven): “Our work shows that increasing specific brain fats at the synapses of patients with a TBC1D24 mutation is a possible strategy for preventing epileptic seizures. And although our work focuses on people with TBC1D24 mutations, we think that our findings could be relevant to various forms of epilepsy.”

Scientific cross-pollination

Professor Wim Versées (VIB-Vrije Universiteit Brussel): “Our two research groups will now continue to collaborate in order to seek out strategies for increasing the concentration of specific fats in the brain to prevent epileptic seizures. This research stems from cross-pollination between structural biology, biochemistry and genetics, so we will certainly continue down this interdisciplinary route.”

Web Source: VIB – Flanders Interuniversity Institute for Biotechnology.

Reference:

Baptiste Fischer, Kevin Lüthy, Jone Paesmans, Charlotte De Koninck, Ine Maes, Jef Swerts, Sabine Kuenen, Valerie Uytterhoeven, Patrik Verstreken, Wim Versées. Skywalker-TBC1D24 has a lipid-binding pocket mutated in epilepsy and required for synaptic function. Nature Structural & Molecular Biology, 2016; DOI: 10.1038/nsmb.3297

The post Scientists track down possible new treatment for epilepsy appeared first on Scienmag.

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