Longevity & AgingTau Protein Secretly Builds Lasting Memories Before It Destroys Them in Alzheimer's
Tau protein, infamous for its role in Alzheimer's disease, turns out to be essential for converting short-term experiences into lasting memories. Researchers at Flinders University found that tau helps select which brain cells store a memory, reduces neural noise during memory formation, and undergoes a controlled chemical change called phosphorylation that organizes memory traces. Without tau, memories can still form initially but fade quickly. Crucially, the abnormal tau seen in Alzheimer's appears to disrupt both new memory formation and recall of older memories. Conducted in mice, the findings cannot yet be directly applied to humans, but they offer new clues about why dementia patients can seem to learn new things yet fail to retain them — and open potential new directions for dementia treatment.
