Discovery of Gene TMEM230 Suggests a Novel Mechanism for Parkinson's Disease

At the cellular level, Parkinson's disease typically entails the loss of cells that produce dopamine, a neurotransmitter involved in neuron-to-neuron communication. A paper published in Nature Genetics describes the discovery of a new gene, TMEM230, associated with Parkinson's disease. TMEM230 is the first gene associated with the disease that has been linked to the trafficking of vesicles that carry neurotransmitters between neurons and therefore illuminates a possible mechanism to explain the disease.

"We are proud to be part of the research team that has discovered a gene mutation associated with this devastating disease," said contributing author Dr. Joseph Jankovic, professor of neurology, distinguished chair in movement disorders and director of the Parkinson's Disease Center and Movement Disorders Clinic at the Department of Neurology, Baylor College of Medicine.

After Jankovic joined Baylor College of Medicine in 1977, he began collecting DNA samples from patients with Parkinson's disease and other movement disorders. He now has a DNA bank with thousands of samples, some of which he contributed to this study to help confirm that TMEM230 is associated with the disease.

TMEM230 was found in a large family with history of Parkinson's disease. "This new gene could also be present in non-familial forms of the disease, which are the majority of the cases," said Jankovic. "The discovery of TMEM230 provides new insights into the cause of Parkinson's disease and may lead to novel treatments of this and other neurodegenerative diseases."

"By studying this new gene we will better understand how synaptic vesicle trafficking affects the development of Parkinson's disease," said senior author Dr. Teepu Siddique, professor of neurology at the Ken and Ruth Davee Department and Cell and Molecular Biology at Northwestern University Feinberg School of Medicine.

Source-Eurekalert