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Brain cells from a mouse cortex that didn’t receive the gene therapy. The amyloid plaques are shown in green, and the glial cells, which surround the plaques, are shown in red (microglia) and magenta (astrocytes). Image 2 shows a mouse cortex that received the gene therapy, and so had fewer amyloid plaques. Credit: Imperial College London

Researchers have prevented development of Alzheimer’s disease in mice by using a modified virus to deliver a specific gene into the brain. The early-stage findings, by scientists from Imperial College London, open avenues for potential new treatments for the disease. Previous studies by the same team suggest this gene, called PGC1 – alpha, may prevent the formation of a protein called amyloid-beta peptide in cells in the lab...