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This year's prestigious award in medical science has been awarded for transformative findings that illuminate how the immune system attacks dangerous pathogens while protecting the body's own cells.

A trio of renowned researchers—from Japan Prof. Sakaguchi and American scientists Dr. Brunkow and Dr. Ramsdell—share this honor.

The research uncovered unique "security guards" within the defense system that remove rogue immune cells that could attacking the organism.

The findings are now enabling new therapies for autoimmune diseases and malignancies.

These laureates will share a monetary award worth 11m SEK.

Crucial Findings

"Their research has been essential for comprehending how the immune system functions and the reason we do not all develop severe autoimmune diseases," stated the head of the Nobel Committee.

This team's research address a fundamental question: In what way does the immune system defend us from numerous infections while keeping our own tissues intact?

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

Such cells employ detectors—called receptors—that are produced by chance in countless variations.

This provides the immune system the capacity to combat a broad range of threats, but the randomness of the process inevitably creates white blood cells that can attack the body.

Security Guards of the Immune System

Researchers previously knew that a portion of these harmful white blood cells were eliminated in the immune organ—the site where immune cells mature.

The latest Nobel Prize honors the discovery of T-reg cells—described as the body's "peacekeepers"—which patrol the body to disarm any immune cells that assault the body's own tissues.

It is known that this mechanism fails in self-attack conditions such as juvenile diabetes, MS, and rheumatoid arthritis.

The prize committee added, "The discoveries have laid the foundation for a novel area of investigation and accelerated the creation of innovative treatments, for instance for tumors and autoimmune diseases."

In malignancies, regulatory T-cells prevent the system from attacking the growth, so research are focused on lowering their numbers.

In self-attack disorders, trials are testing increasing T-reg cells so the organism is no longer being harmed. A similar method could also be effective in reducing the chances of organ transplant failure.

Innovative Studies

Professor Shimon Sakaguchi, from Osaka University, conducted experiments on mice that had their immune gland extracted, leading to self-attack conditions.

He showed that injecting immune cells from other mice could prevent the illness—implying there was a system for blocking immune cells from harming the body.

Dr. Brunkow, from the a research center in a US city, and Dr. Ramsdell, now at Sonoma Biotherapeutics in a California city, were investigating an inherited autoimmune disease in rodents and humans that resulted in the identification of a genetic factor critical 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 attacking the body's own tissues," commented a prominent physiology specialist.

"The work is a striking illustration of how fundamental biological study can have far-reaching consequences for human health."