🔗 Share this article Nobel Prize Recognizes Pioneering Body's Defenses Research The prestigious award in Physiology or Medicine was granted for revolutionary findings that illuminate how the body's defense network attacks dangerous pathogens while sparing the body's own cells. Three esteemed scientists—Japan's Shimon Sakaguchi and American experts Mary Brunkow and Fred Ramsdell—received this honor. Their work uncovered specialized "security guards" within the immune system that remove rogue immune cells that could attacking the body. The discoveries are now paving the way for innovative therapies for immune disorders and cancer. These laureates will divide a prize fund valued at 11m Swedish kronor. Crucial Discoveries "The work has been essential for comprehending how the body's defenses operates and why we do not all suffer from serious self-attack conditions," commented the head of the Nobel Committee. This team's research address a core mystery: How does the defense system defend us from countless infections while leaving our own tissues unharmed? Our body's protection system uses white blood cells that search for signs of infection, even viruses and bacteria it has not met before. These cells employ sensors—called receptors—that are generated randomly in countless combinations. That gives the defense network the ability to fight a broad range of invaders, but the randomness of the mechanism inevitably creates immune cells that can attack the body. Security Guards of the Body Researchers earlier knew that a portion of these problematic defense cells were destroyed in the thymus—the site where immune cells mature. The latest Nobel Prize honors the identification of regulatory T-cells—known as the immune system's "peacekeepers"—which travel through the body to disarm other defenders that assault the healthy cells. We know that this mechanism fails in self-attack conditions such as juvenile diabetes, multiple sclerosis, and RA. A prize committee added, "These discoveries have laid the foundation for a new field of investigation and spurred the creation of new treatments, for example for tumors and autoimmune diseases." In malignancies, regulatory T-cells block the body from attacking the tumor, so research are focused on lowering their quantity. In autoimmune diseases, experiments are exploring boosting regulatory T-cells so the body is not under attack. A comparable method could also be useful in minimizing the risks of transplanted organ rejection. Pioneering Studies Prof Shimon Sakaguchi, of Osaka University, performed tests on rodents that had their thymus extracted, leading to autoimmune disease. The researcher showed that introducing immune cells from other mice could prevent the disease—suggesting there was a mechanism for preventing immune cells from attacking the body. Mary Brunkow, from the a research center in Seattle, and Dr. Ramsdell, now at Sonoma Biotherapeutics in a California city, were studying an genetic immune disorder in rodents and people that resulted in the discovery of a genetic factor vital for the way regulatory T-cells function. "The pioneering research has revealed how the body's defenses is controlled by regulatory T cells, stopping it from mistakenly targeting the healthy cells," commented a leading biological science specialist. "This work is a remarkable illustration of how basic biological research can have far-reaching consequences for human health."