Fênix Araujo, PhD, a postdoc in the Sonkusare Lab, was recently awarded a two-year Postdoctoral Fellowship Award from the American Heart Association. Her project, “Non-Genomic Effects of Mineralocorticoid Receptor on Smooth Muscle TRPV4 Channels and Blood Pressure”, explores the role of a particular category of receptors, mineralcorticoids, in managing blood pressure and blood vessel function.
Hypertension, high blood pressure, affects approximately half of Americans over the age of 18. Persistent high blood pressure can contribute to heart attack, stroke, vision problems, and kidney disease, making it an important target for pharmaceutical development. “Many patients with high blood pressure are left with treatment-resistant hypertension,” says Araujo. ” There is a critical need to identify new ways of treating hypertension, and this requires a better understanding of pathological mechanisms.”
Blood pressure is controlled in part by smooth muscle cells inside our blood vessels, which can tighten or relax the vessel to control blood flow. “I am working on a fundamentally new mechanism for blood pressure regulation. This mechanism involves a well-known receptor called mineralocorticoid receptor, which alters ion channel activity and regulates smooth muscle contraction,” Araujo explains. To accomplish her objectives, she will use a combination of gene editing techniques, measurements of the electric currents inside cells, and super-resolution microscopy capable of observing individual proteins at the plasma membrane. Running these experiments in model systems and human samples with and without hypertension will allow Araujo to uncover new mechanisms of blood pressure regulation and possibly unlock new treatment options for hypertension.
The AHA Postdoctoral Fellowship is a prestigious, highly competitive award. “It’s an important milestone in my career, and I’m profoundly grateful for the training and support provided by the Sonkusare lab, as well as the research environment at the CVRC,” says Araujo.