Breakthrough Imaging Technique Reveals How Glutamate Opens Brain Channels
A new study from Johns Hopkins Medicine uses advanced cryo-electron microscopy (cryo-EM) to show how the neurotransmitter glutamate activates AMPA receptors in the brain. The work deepens our understanding of neural communication and points to potential new treatments for epilepsy and certain intellectual disabilities. Research by Johns Hopkins in collaboration with UTHealth Houston was published in a leading scientific journal.
Neural communication relies on chemical signals between neurons. Glutamate binds to AMPA receptors, triggering electrical signals that propagate through the brain. In this study, scientists captured highly detailed images of receptor function by warming samples to body temperature, a departure from traditional cold-temperature methods. This approach provides more dynamic snapshots of receptor activity under conditions closer to how the brain operates.