A new study published in Science sheds some light on how “memory disturbances” in an aging mouse brain are associated with altered “hippocampal chromatin plasticity” — the combination of DNA, histones, and other proteins that make up the chromosomes associated with the hippocampus. Specifically, the study describes an acetyl genetic switch that produces memory impairment in aging 16-month-old mice. Because the acetyl wasn't present in young 3-month-old mice, the study concludes that it acts as a switch for a cluster of learning and memory genes.

基于1个网页-相关网页