The neuroscientist Dr. David Vilchez and his team at CECAD, the University of Cologne’s Cluster of Excellence for Aging Research, have made an important step towards understanding the mechanisms that cause the neurodegenerative disorder Huntington’s disease. Particularly, they identified a system blocking the accumulation of toxin protein aggregates, which are responsible for neurodegeneration. The results have now been published in the journal ‘Nature Communications.’
Huntington’s disease is a neurodegenerative disorder that results in the death of brain cells, leading to uncontrolled body movement, loss of speech and psychosis. Mutations in the huntingtin gene cause the disease, resulting in the toxic aggregation of the huntingtin protein. The accumulation of these aggregates causes neurodegeneration and usually leads to the patient’s death within twenty years after the onset of the disease.
To examine the mechanisms underlying Huntington’s disease, Vilchez and his team used so-called induced pluripotent stem cells (iPSC) from Huntington’s disease patients, which are able to differentiate into any cell type, such as neurons. Induced pluripotent stem cells derived from patients with Huntington’s disease exhibit a striking ability to avoid the accumulation of toxic protein aggregates, a hallmark of the disease. Even though iPSCs express the mutant gene responsible for Huntington’s disease, no aggregates were found.
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