Prestigious Prize Honors Groundbreaking Immune System Research
This year's prestigious award in Physiology or Medicine was granted for transformative findings that clarify how the immune system targets harmful pathogens while protecting the body's own cells.
A trio of renowned scientists—from Japan Prof. Sakaguchi and US experts Dr. Brunkow and Fred Ramsdell—share this accolade.
The work uncovered specialized "sentinels" within the defense system that eliminate rogue immune cells capable of harming the organism.
The discoveries are now enabling new therapies for autoimmune diseases and cancer.
These laureates will divide a prize fund worth 11 million SEK.
Crucial Findings
"The research has been decisive for comprehending how the immune system functions and why we do not all develop severe autoimmune diseases," stated the chair of the award panel.
The team's research address a fundamental mystery: In what way does the immune system protect us from countless invaders while keeping our healthy cells unharmed?
Our immune system uses immune cells that search for signs of infection, including viruses and germs it has not met before.
Such cells employ detectors—known as recognition units—that are produced randomly in a vast number of variations.
That provides the immune system the ability to fight a broad range of threats, but the unpredictability of the process inevitably creates white blood cells that can target the body.
Protectors of the Body
Researchers previously knew that some of these problematic white blood cells were eliminated in the immune organ—where white blood cells mature.
The latest award recognizes the identification of regulatory T-cells—known as the immune system's "peacekeepers"—which patrol the system to disarm any immune cells that assault the body's own tissues.
We know that this process malfunctions in autoimmune diseases such as juvenile diabetes, MS, and rheumatoid arthritis.
The prize committee stated, "The discoveries have laid the foundation for a novel area of research and spurred the development of new treatments, for instance for tumors and immune disorders."
Regarding cancer, T-regs prevent the system from fighting the tumor, so studies are focused on reducing their quantity.
In self-attack disorders, trials are exploring boosting regulatory T-cells so the organism is no longer being harmed. A similar method could also be effective in minimizing the risks of organ transplant failure.
Pioneering Studies
Professor Shimon Sakaguchi, from a Japanese institution, performed experiments on rodents that had their immune gland removed, causing autoimmune disease.
He demonstrated that introducing defense cells from healthy animals could stop the illness—implying there was a mechanism for preventing defenders from attacking the body.
Mary Brunkow, from the Institute for Systems Biology in Seattle, and Fred Ramsdell, currently at a biotech firm in San Francisco, were studying an genetic autoimmune disease in mice and humans that resulted in the identification of a gene vital for how regulatory T-cells operate.
"Their pioneering work has revealed how the immune system is kept in check by regulatory T cells, stopping it from mistakenly targeting the body's own tissues," commented a prominent biological science specialist.
"This research is a striking illustration of how fundamental physiological research can have far-reaching implications for public health."
