07/27/2025
Yet another discovery leading to hope in the fight against Parkinsons!
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Researchers have finally uncovered how a mysterious protein called PINK1 contributes to Parkinson’s disease—bringing fresh hope for new treatments. For years, scientists have known that PINK1 is linked to Parkinson’s, especially early-onset cases in people under 50, but until now, they had never seen what this protein looks like or how exactly it causes damage inside cells. That’s just changed, thanks to a team from Australia’s Walter and Eliza Hall Institute, who’ve revealed the protein’s full structure and how it attaches to mitochondria—the energy-making parts of our cells.
PINK1 is supposed to help remove damaged mitochondria through a cleanup process called mitophagy. But in people with a PINK1 mutation, this system breaks down. Toxins build up, cells get overloaded, and brain cells—especially the energy-hungry ones that make dopamine—start dying. Since the brain replaces lost cells very slowly, this damage becomes permanent, leading to symptoms like tremors, stiffness, memory problems, and more.
Using high-resolution imaging, scientists observed PINK1 in action for the first time. They saw how it senses mitochondrial damage, docks onto the affected area, and works with another protein, Parkin, to recycle it. They also pinpointed how disease-related mutations disrupt this process. Now that the protein’s structure is finally visible, drug designers can begin working on ways to “switch off” or correct the malfunction—potentially slowing or even halting Parkinson’s progression.
PMID: 33998543
PMCID: PMC9004622