Prestigious Award Recognizes Groundbreaking Immune System Research
The prestigious award in Physiology or Medicine has been awarded for transformative discoveries that illuminate how the body's defense network attacks harmful infections while sparing the healthy tissues.
Three esteemed scientists—from Japan Shimon Sakaguchi and American experts Dr. Brunkow and Dr. Ramsdell—share this accolade.
Their research uncovered unique "sentinels" within the defense system that remove rogue immune cells that could attacking the body.
These findings are now paving the way for new treatments for immune disorders and malignancies.
These winners will divide a prize fund worth 11m Swedish kronor.
Crucial Findings
"The work has been decisive for understanding how the immune system functions and the reason we don't all suffer from severe autoimmune diseases," stated the head of the award panel.
The team's research explain a fundamental mystery: How does the defense system protect us from countless invaders while leaving our healthy cells unharmed?
Our immune system employs immune cells that search for indicators of disease, even viruses and germs it has not met before.
Such cells employ detectors—called recognition units—that are produced by chance in countless variations.
That provides the immune system the capacity to combat a wide array of invaders, but the randomness of the mechanism inevitably creates white blood cells that can target the host.
Security Guards of the Body
Researchers previously knew that some of these problematic white blood cells were eliminated in the thymus—the site where white blood cells develop.
This year's Nobel Prize honors the identification of T-reg cells—known as the body's "peacekeepers"—which travel through the body to neutralize other immune cells that attack the body's own tissues.
It is known that this mechanism fails in autoimmune diseases such as type-1 diabetes, MS, and RA.
A Nobel panel added, "The discoveries have established a new field of research and accelerated the creation of new treatments, for instance for cancer and immune disorders."
Regarding cancer, regulatory T-cells block the body from fighting the growth, so studies are aimed at lowering their quantity.
In autoimmune diseases, trials are exploring boosting regulatory T-cells so the body is no longer under attack. A comparable method could also be effective in reducing the risks of organ transplant failure.
Pioneering Experiments
Prof Sakaguchi, of Osaka University, conducted tests on mice that had their thymus removed, leading to autoimmune disease.
He demonstrated that introducing defense cells from healthy animals could stop the disease—implying there was a system for preventing immune cells from attacking the host.
Dr. Brunkow, from the a research center in a US city, and Fred Ramsdell, currently at a biotech firm in San Francisco, were studying an inherited autoimmune disease in rodents and people that resulted in the identification of a genetic factor vital for how regulatory T-cells function.
"The groundbreaking research has revealed how the body's defenses is kept in check by regulatory T cells, stopping it from mistakenly targeting the healthy cells," commented a prominent biological science specialist.
"The research is a striking example of how fundamental physiological study can have broad consequences for public health."
