Human tau seeds trigger disease-specific shapes in mouse brains, new study finds
A new study published in Nature reveals that human tau proteins from Alzheimer's and other neurodegenerative diseases can force healthy proteins in mouse brains to misfold into matching shapes. This supports the prion hypothesis, suggesting these diseases spread through a templated seeding process.
Why it matters
Understanding the atomic-level mechanism of how neurodegenerative diseases spread is critical for developing future treatments for conditions like Alzheimer's.
edited by Gaby Clark , reviewed by Robert Egan
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Add as preferred source Human tau from Alzheimer's disease and corticobasal degeneration triggered the mice's own tau to form fibers with matching disease-specific folds. Credit: Nature (2026). DOI: 10.1038/s41586-026-11061-x Tau is a protein that occurs naturally in the brain. It is essential for proper neuron development and for how neurons communicate with each other. The same protein, however, when misshapen or misfolded, can act as a driver of neurodegenerative diseases. Abnormal buildup of tau is a hallmark of Alzheimer's disease, and scientists have also found an association between misfolded tau and more than 20 neurodegenerative diseases.
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