Targeting the Roots: New Study Focuses on Genetic Pathways Behind Parkinson’s

A Canadian researcher has received a three-year, $135,000 grant from Parkinson Canada to explore how a rare mutation in the RAB32 gene may increase the risk of developing Parkinson’s disease. 🧠 What Is the RAB32 Gene and Why Does It Matter? RAB32 is a protein that helps transport materials within cells and supports the immune system, especially in the brain’s immune cells called microglia. A specific mutation—Ser71Arg—in this gene has been found to activate LRRK2, an enzyme already known to play a role in Parkinson’s. This mutation is over 100 times more common in people with Parkinson’s than in the general population and may increase risk by more than 13 times. 🧪 Understanding Parkinson’s at the Cellular Level Dr. Jay Penney, a researcher at the University of Prince Edward Island, will use human stem cell models to grow brain cells like neurons and microglia. These models will help him study how the RAB32 mutation affects cell function and contributes to the loss of dopamine-producing neurons, which are key in Parkinson’s disease. Using human stem cells—rather than mouse models—makes this research more likely to translate into real-world treatments for people living with Parkinson’s. 🌱 Hope for the Future While this research is still in the early stages, Dr. Penney’s work could help uncover new treatment targets and improve our understanding of how Parkinson’s begins at a cellular level. “This is the first step in understanding how things are happening on a cell level. If we can do that, then maybe down the road we can figure out how to find a cure.” – Dr. Jay Penney 🔍 Why It Matters For people living with Parkinson’s and their loved ones, this kind of research offers hope—not just for better treatments, but for a deeper understanding of how and why the disease develops.