Discovery of a crucial mechanism in Alzheimer's disease
Scientists at the VIB-KU Leuven Centre for Brain & Disease Research have unravelled a pioneering mechanism that plays a crucial role in the early stages of Alzheimer's disease. It involves a fragment of the amyloid protein precursor (APP), known as APP-CTF, which interferes with communication between cellular compartments. These compartments are essential for calcium storage and waste removal, processes vital for maintaining healthy neurons.
The role of APP-CTF in neuronal degeneration
This research, published in the leading journal Developmental Cell, shows that APP-CTFs disrupt the balance of calcium within lysosomes. This disruption leads to an accumulation of cholesterol and reduces the ability of lysosomes to break down cellular waste. The result is a collapse of the endo-lysosomal system, which is fundamental to neuronal health.
Implications for future Alzheimer's treatments
The findings suggest that targeting the accumulation of toxic APP-CTFs, without completely blocking the enzyme involved in their production, may be a promising strategy for early interventions in Alzheimer's disease. This new understanding offers hope for developing treatments that can stop or even prevent the disease at an earlier stage, which will be crucial in the fight against Alzheimer's.
