Microglia-derived vesicles and brain-artery inflammation after brain injury
Official title: Role of microglial extracellular vesicles in the progression of atherosclerosis after traumatic brain injury
Funded at Massachusetts General Hospital · NIH-11448649 · Data updated 2026-11-12
This NIH grant explores how tiny brain cell packages from microglia after a brain injury may drive inflammation and accelerate artery disease, potentially helping people who’ve had a traumatic brain injury.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Massachusetts General Hospital NIH-funded |
| Lab location | 1 site (Boston, United States) |
| Project start | August 1, 2026 |
| Project end | May 31, 2031 |
| Funding year | 2026 |
| Award (this year) | $539,066 |
| NIH project number | 1R01HL184259-01A1 |
| Project ID | NIH-11448649 on NIH RePORTER |
Who could benefit from this research
✓Could help
Ideal candidates are individuals with a history of traumatic brain injury who may later be at risk for cardiovascular disease; the study currently uses mouse models to investigate mechanisms.
✕Less likely to help
Results may not directly translate to every TBI patient or to those without vascular risk factors, and long timelines may limit immediate patient benefits.
What this research studies
After a traumatic brain injury, people face a higher risk of cardiovascular disease. This project uses special mice that allow researchers to track tiny vesicles released by microglia to see if they carry inflammatory signals to the heart and blood vessels. The study will test whether these microglia-derived vesicles containing IL-1β contribute to the activation of inflammation in arteries and the aorta, promoting atherosclerosis. Researchers will compare brain-injury models to understand how brain signals influence cardiovascular health over time. The work aims to reveal mechanisms that could lead to new interventions to protect heart and vessel health after brain injury.
Why it matters
Potential benefit: Understanding this brain-to-artery communication could lead to new treatments that prevent heart and artery disease in people who have had a TBI.
How similar studies have gone: Prior studies show brain injury can influence cardiovascular inflammation, but this project tests a specific microglia-derived vesicle mechanism, which is still being established.
Where this research is happening
-
Massachusetts General Hospital
Boston, United States Active
Researchers
- Principal investigator: Wu, Limin — Massachusetts General Hospital
- Study coordinator: Wu, Limin
Related research
Other NIH-funded projects on the same topics.
-
Treatments to slow brain-injury–linked hardening of arteries in Veterans
Aimed at people with a history of repeated mild traumatic brain injuries, this project tests potential therapies to prevent faster buildup of artery plaque that raises heart and stroke risk.
-
AI-enhanced virtual reality tool to support remote emergency brain surgery training in Tanzania
A new AI-powered virtual reality tool helps non-experts in low-resource areas get real-time remote guidance for emergency traumatic brain injury surgery.
-
How head injury affects the heart and blood vessels
This project aims to find out whether traumatic brain injuries make people more likely to develop hardened arteries and heart problems, especially among veterans.
-
Neural targets for improving function in Veterans with alcohol use disorder and mild brain injury
This project tests a targeted brain-stimulation approach to help Veterans who have both alcohol use problems and mild traumatic brain injury improve daily functioning.
-
How head injuries affect the heart and blood vessels
This project is looking at whether past traumatic brain injuries cause changes in blood vessels and raise the risk of heart disease for people who have had head injuries.
-
Keeping oxygen in the injured brain after severe head trauma
This project uses a small brain oxygen monitor to guide ICU care for people with severe traumatic brain injury in hopes of improving recovery.
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page.