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The prestigious award in medical science has been granted for revolutionary findings that clarify how the immune system attacks dangerous pathogens while protecting the healthy tissues.

A trio of esteemed scientists—from Japan Prof. Sakaguchi and American scientists Mary Brunkow and Dr. Ramsdell—share this accolade.

The research identified unique "sentinels" within the immune system that remove rogue defense cells that could attacking the body.

The discoveries are now paving the way for new therapies for autoimmune diseases and cancer.

These winners will divide a monetary award valued at 11 million SEK.

Crucial Discoveries

"Their work has been decisive for comprehending how the body's defenses functions and why we do not all develop serious self-attack conditions," stated the chair of the Nobel Committee.

The trio's studies address a fundamental mystery: How does the immune system defend us from countless infections while keeping our healthy cells intact?

The body's protection system employs immune cells that search for indicators of disease, including pathogens and germs it has not met before.

These cells utilize detectors—called receptors—that are produced by chance in countless variations.

That provides the immune system the ability to fight a broad range of threats, but the randomness of the process unavoidably creates immune cells that can attack the body.

Protectors of the Body

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

The latest Nobel Prize honors the discovery of regulatory T-cells—known as the body's "peacekeepers"—which patrol the system to disarm any defenders that attack the healthy cells.

It is known that this mechanism fails in autoimmune diseases such as type-1 diabetes, multiple sclerosis, and RA.

A Nobel panel stated, "These findings have established a novel area of research and accelerated the development of innovative treatments, for instance for cancer and autoimmune diseases."

Regarding cancer, regulatory T-cells prevent the body from fighting the growth, so studies are focused on reducing their quantity.

For autoimmune diseases, trials are exploring boosting regulatory T-cells so the organism is not being harmed. A similar method could also be effective in minimizing the chances of transplanted organ failure.

Pioneering Studies

Professor Shimon Sakaguchi, from a Japanese institution, conducted tests on mice that had their thymus removed, leading to self-attack conditions.

He showed that introducing immune cells from other animals could prevent the disease—implying there was a mechanism for blocking immune cells from harming the body.

Dr. Brunkow, affiliated with the a research center in Seattle, and Fred Ramsdell, currently at Sonoma Biotherapeutics in San Francisco, were studying an inherited autoimmune disease in rodents and humans that led to the identification of a genetic factor vital for the way regulatory T-cells function.

"The pioneering research has uncovered how the immune system is kept in check by regulatory T cells, preventing it from accidentally attacking the healthy cells," said a prominent physiology expert.

"This research is a striking illustration of how basic physiological study can have far-reaching consequences for human health."