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Scientists Just Restored Memory In Alzheimers Models By Blocking One Protein And The Implications Are Huge

Researchers at Cold Spring Harbor Laboratory have identified a new potential strategy for fighting Alzheimer’s disease, finding that blocking a single protein called PTP1B restored memory and improved the brain’s ability to clear the toxic plaque buildup that drives the disease in mouse models. The protein PTP1B was first discovered by lead researcher Professor Nicholas Tonks in 1988, and his team found that it interferes with a protein called SYK, which controls the brain’s immune cells known as microglia. Microglia are responsible for clearing away harmful buildup of amyloid-beta, the peptide that forms the characteristic plaques of Alzheimer’s disease, but over the course of the illness these cells become exhausted and less effective at their job. Blocking PTP1B reinvigorated the microglia, helping them clear the plaque and restoring learning and memory in animal models, with the study published in the Proceedings of the National Academy of Sciences.

What makes the target especially promising is its connection to diseases beyond Alzheimer’s. PTP1B is already a recognized therapeutic target for type 2 diabetes and obesity, both established risk factors for Alzheimer’s, meaning a drug that inhibits PTP1B could potentially address multiple conditions at once and reduce risk from several directions simultaneously. Current Alzheimer’s therapies largely focus on reducing amyloid buildup directly, with limited benefit for many patients, and the research team argues that targeting PTP1B adds impact by working on the brain’s own clearing system rather than the plaque itself. Professor Tonks, whose own mother lived with Alzheimer’s and who described the disease as a slow bereavement where you lose the person piece by piece, said the goal is to slow the progression of this illness and improve quality of life, and that PTP1B may be one of the most actionable new targets researchers have found in years.

Source: https://www.sciencedaily.com/releases/2026/04/260429102037.htm

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