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Traditionally, hemoglobin is associated exclusively with red blood cells, where it plays a critical role in oxygen transport. Isakson's team made the groundbreaking discovery that alpha hemoglobin is also present in endothelial cells—the cells lining blood vessels. This finding was unexpected and has proven highly significant because alpha hemoglobin influences vascular dilation. Building on this discovery, Brant's group patented peptides designed to regulate this mechanism in the endothelium. These peptides are now being tested as potential therapies for conditions such as sickle cell disease, specifically to alleviate pain crises by improving blood vessel dilation. Brant has also advanced understanding of pannexin channels, which mediate ATP release in blood vessels. These channels have emerged as key regulators of vascular function, including inflammation and blood pressure control. His work has positioned pannexin channels as important targets for future research and therapeutic development. Together, these contributions—identifying alpha hemoglobin in endothelial cells and elucidating the role of pannexin channels—represent significant strides in vascular biology and open new avenues for clinical applications. Brant's day begins at home, where he makes breakfast for his wife and children—a daily ritual he values. Early, he leaves the house and heads to the pool for a swim. Swimming isn't just exercise; it's often when new ideas surface, shaping conversations he'll have later in the lab. Brant arrives at the lab in the morning. His office is located right in the middle of the workspace, surrounded by the desks of postdocs and PhD students. He keeps an open-door policy, encouraging constant interaction. Many mornings, the first thing he does is share thoughts sparked during his swim with the relevant team member. The rest of the day is a mix of discussions, mentoring, meetings, and handling the “odds and ends” that come with running a research program. His departure time varies, often depending on family commitments like his children's basketball games. Evenings include dinner with the family, followed by an hour or so of work before winding down. Brant holds a degree in history, so he spends time reading historical works before bed—a personal passion that balances his scientific life. When Brant isn't working, family life takes center stage. His wife jokes that he needs a hobby, but for now, his children's activities fill that space. Basketball games dominate the schedule—sometimes four in a single week. Despite being 6′3″, Brant admits he was never good at basketball, but he enjoys watching his kids excel at it. Beyond family time, he loves reading history and exploring good food. He describes himself as a bit of a foodie and appreciates quality meals. For now, life revolves around family, reading, and shared experiences—a season he embraces, even if hobbies are on hold. Step inside Brant Isakson's lab, and you'll find a team chasing mysteries at the smallest scales of the vascular system—the microcirculation. This is the “business end” of the vasculature, where life's most critical exchanges happen: oxygen delivery, nutrient flow, immune surveillance. It's a world of tiny arteries, capillaries, venules, and lymphatic vessels, and Isakson's mission is to decode how these cells talk to each other—and what happens when those conversations break down. “It's chaotic,” he admits with a grin. His research spans a fascinating range of questions, all tied together by one theme: communication. How do endothelial cells, immune cells, and signaling molecules coordinate to keep blood flowing smoothly? And when disease strikes—anemia, hypertension, inflammation—what goes wrong in that cellular dialogue? Isakson's team is probing how iron regulation shapes endothelial health and lymphatic function in the heart. They're even exploring the role of basophils—enigmatic white blood cells that few researchers have studied—in this delicate balance. Another project dives into Piezo2 channels in adipose tissue, uncovering how these mechanosensitive proteins influence vascular signaling and metabolism. Pannexin channels, which release ATP, are under the microscope too—both in blood vessels and kidneys. These channels are emerging as key players in controlling vascular tone and inflammation, with implications for everything from blood pressure to kidney health. The big picture? Isakson's lab is rewriting the script on how microvascular networks maintain homeostasis—and what happens when the system falters. It's fundamental science with a translational edge, opening doors to therapies for cardiovascular disease, kidney disorders, and beyond. The authors have nothing to report. The authors declare no conflicts of interest. Data sharing not applicable to this article as no datasets were generated or analyzed during the current study.