Perivascular Adipose Tissue (PVAT) as a Central Integrator of Vascular Health

The Michigan State University College of Osteopathic Medicine is advancing a major NIH-funded Program Project Grant (PPG) investigating Perivascular Adipose Tissue (PVAT) as a central integrator of vascular health. Awarded $13.5 million, the five-year program brings together a research team introduced by MSUCOM in January and now focused on Project I of the PPG. The program is organized around the overall hypothesis that PVAT engages in bidirectional interactions with the other layers of blood vessels, acting as a critical partner that, together with those layers, forms an integrated system that maintains vascular health. Recognizing that dysfunctions in blood pressure regulation such as hypertension remain difficult to treat, the team aims to address gaps in understanding the mechanisms by which normal and pathological changes in blood pressure occur and how the vasculature both influences and is impacted by those changes. 

To build a strong foundation for the work ahead, investigators are studying PVAT tissue in depth to clarify how blood vessels function when PVAT is considered an integral component. This foundational approach is described metaphorically as constructing a building or system: solid groundwork is being developed to support multiple interrelated projects across the PPG. Central to the initiative is the creation of a cell atlas of PVAT and associated vascular tissues. The cell atlas effort will map cellular composition and relationships within PVAT and the vascular wall, providing a resource that could reshape how researchers and clinicians conceptualize the cardiovascular system. By redefining what constitutes the cardiovascular system and explicitly including PVAT as an active participant in vascular regulation, the team hopes to open new avenues for understanding blood pressure control and vascular pathology. 

Project I, currently the immediate focus, is progressing work that will inform the broader PPG objectives over the five-year period. The research seeks to delineate functional interactions among PVAT, arteries, and veins, examining how these interactions contribute to the system that maintains physiological function. MSUCOM emphasizes that the program’s findings may lead to novel frameworks and tools for thinking about vascular health, with potential implications for better prevention, diagnosis, and treatment strategies for conditions related to blood pressure dysregulation. 

Throughout, the PPG underscores the importance of vascular health to overall cardiovascular regulation and responds to the persistent clinical challenge posed by hypertension and related disorders. By integrating detailed tissue-level study, cell mapping, and a systemic view of vessel-PVAT interactions, MSUCOM’s NIH-funded program aims to redefine aspects of cardiovascular science and establish a durable platform for future discovery and translational impact.