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The prestigious award in medical science has been awarded for revolutionary discoveries that illuminate how the immune system attacks harmful infections while sparing the healthy tissues.

Three esteemed scientists—from Japan Shimon Sakaguchi and American experts Dr. Brunkow and Fred Ramsdell—share this honor.

Their work identified unique "sentinels" within the immune system that eliminate malfunctioning immune cells capable of harming the body.

The discoveries are now enabling innovative therapies for autoimmune diseases and malignancies.

These laureates will share a prize fund valued at 11 million SEK.

Crucial Findings

"Their work has been essential for comprehending how the body's defenses operates and the reason we do not all develop severe autoimmune diseases," stated the head of the award panel.

The trio's research address a core mystery: In what way does the defense system protect us from numerous invaders while keeping our own tissues unharmed?

Our body's protection system uses white blood cells that scan for signs of disease, including pathogens and bacteria it has not met before.

Such cells employ sensors—called recognition units—that are generated randomly in a vast number of combinations.

That gives the immune system the capacity to combat a broad range of threats, but the unpredictability of the mechanism unavoidably creates immune cells that can target the host.

Protectors of the Immune System

Scientists previously understood that a portion of these harmful defense cells were eliminated in the immune organ—the site where white blood cells develop.

The latest award recognizes the identification of T-reg cells—described as the body's "peacekeepers"—which patrol the body to neutralize any immune cells that assault the healthy cells.

It is known that this mechanism fails in autoimmune diseases such as juvenile diabetes, multiple sclerosis, and rheumatoid arthritis.

The prize committee stated, "The findings have established a new field of investigation and spurred the development of new therapies, for instance for tumors and autoimmune diseases."

Regarding malignancies, T-regs prevent the body from fighting the tumor, so studies are focused on reducing their quantity.

In autoimmune diseases, trials are testing increasing regulatory T-cells so the organism is no longer being harmed. A similar approach could also be useful in reducing the chances of transplanted organ rejection.

Innovative Experiments

Professor Sakaguchi, of a Japanese institution, performed experiments on rodents that had their immune gland removed, leading to autoimmune disease.

He showed that injecting defense cells from other animals could stop the disease—suggesting there was a system for blocking defenders from harming the body.

Mary Brunkow, from the a research center in a US city, and Fred Ramsdell, currently at Sonoma Biotherapeutics in San Francisco, were investigating an genetic immune disorder in rodents and people that resulted in the identification of a genetic factor vital for the way T-regs operate.

"Their pioneering research has uncovered how the body's defenses is controlled by regulatory T cells, stopping it from mistakenly targeting the healthy cells," commented a prominent physiology expert.

"This work is a remarkable example of how fundamental physiological study can have far-reaching implications for human health."