Overview

• Fluorescent sensors encapsulated in exosomes successfully cross the blood-brain barrier in mice.
• The sensors detect low ATP levels in brain regions affected by Alzheimer's, aiding diagnosis.
• Exosome delivery is nearly four times more efficient than conventional methods.
• The new technique shows promise for non-invasive live brain imaging.
• Researchers aim to adapt the method for other clinically relevant neurotransmitters.