Peter Searson, a professor at Johns Hopkins University and a core researcher in the Institute for NanoBioTechnology, is leading a team focused on understanding how the blood-brain barrier is disrupted in diseases like Alzheimer's. This barrier plays a vital role in maintaining a controlled biochemical environment for the brain, selectively allowing nutrients while blocking harmful substances. Funded primarily by the National Institutes of Health, the research utilizes stem cell technology to create models that replicate human blood vessels. These models help study the physiological impacts of various stressors, including hypertension and inflammation, which can lead to conditions such as microbleeds and hemorrhage. The research aims to unravel how different risk factors affect the blood-brain barrier and its ability to repair itself. Searson's lab is also exploring age-related changes that could inform therapies to combat neurodegenerative diseases. A significant challenge remains in drug delivery, as the blood-brain barrier is highly effective at preventing most drugs from entering the brain. Searson's participation in the Adult Brain Tumor Consortium's Workshop highlights the ongoing efforts to improve strategies for drug delivery across this critical barrier.