The largest dataset regarding brain regions has been produced by researchers from the University of Manchester, showing differences in healthy brains and those with Alzheimer’s.
Developed by a team of researchers led by Dr Richard Unwin at The University of Manchester, along with researchers from Universities, Bristol, Liverpool, UK, and Auckland, New Zealand, the biggest ever map of human Alzheimer’s brain is published and now freely available online for any scientist to use.
Regions of the brain
Published in Communications Biology, the analysis, mapping the relative levels of over 5,825 distinct proteins across six regions of the brain, generated a massive 24,024 data points.
The brain regions in the study included the more heavily affected Hippocampus, Entorhinal cortex, Cingulate gyrus and the less affected Motor Cortex, Sensory Cortex, and Cerebellum.
The samples were donated for research by patients at the New Zealand Brain Bank in Auckland.
Unwin explains: “This database provides a huge opportunity for dementia researchers around the world to progress and to follow-up new areas of biology and develop new treatments.
“It could also help validate observations seen in in animal or cell disease models in humans.
”It’s very exciting to be able to make these data public so scientists can access and use this vital information.”
The team also highlight that one region of the brain, previously thought to be unaffected by the disease, the cerebellum, displayed a series of changes which they think might protect it from damage caused by Alzheimer’s.
Taking a closer look at the different pathways
Typically, Alzheimer’s disease arises in the hippocampus and spreads through pathways in the brain. But by looking at different parts of that pathway, the team were able to observe, for the first time, how Alzheimer’s progresses in more detail.
“We think that the changes we see in the regions affected later on-represent early disease changes, present before cells die,” he adds.
“These represent good new targets for drug developers, as we know it’s important to try to intervene early.”
In the course of the study, the team stumbled upon new molecules not previously associated with the disease, representing further targets to develop new drugs.
The team identified 129 protein changes which were present in all areas of the brain studied, with at least 44 not previously associated with the disease.
Providing a huge opportunity
Dr Rosa Sancho, Head of Research at Alzheimer’s Research UK, adds: “By studying thousands of individual proteins, this exciting research has generated a detailed molecular map of changes that get underway in the brain in Alzheimer’s disease.
“Making this information freely available online will help researchers to navigate the complex and changing environment of the brain in Alzheimer’s and identify processes that could be targeted by future drugs.
“There are over half a million people in the UK living with Alzheimer’s and there are currently no treatments that can slow or stop the disease from progressing in the brain. Pioneering research like this is driving progress towards new breakthroughs that will change people’s lives.”