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The Nobel Prize in medical science has been awarded for revolutionary findings that clarify how the immune system attacks dangerous pathogens while protecting the healthy tissues.

Three renowned scientists—from Japan Shimon Sakaguchi and US experts Mary Brunkow and Dr. Ramsdell—received this honor.

The research identified unique "sentinels" within the immune system that eliminate rogue immune cells capable of harming the organism.

These discoveries are now enabling new treatments for immune disorders and malignancies.

These laureates will share a prize fund worth 11m SEK.

Crucial Discoveries

"Their work has been decisive for comprehending how the immune system operates and why we do not all suffer from severe autoimmune diseases," stated the chair of the Nobel Committee.

The team's research explain a fundamental question: In what way does the defense system protect us from numerous invaders while keeping our own tissues unharmed?

Our immune system uses immune cells that scan for indicators of disease, including viruses and germs it has never encountered.

These cells utilize detectors—known as recognition units—that are generated by chance in a vast number of combinations.

That provides the defense network the ability to fight a wide array of threats, but the unpredictability of the process unavoidably creates white blood cells that can attack the body.

Security Guards of the Immune System

Scientists earlier knew that a portion of these problematic white blood cells were destroyed in the thymus—where white blood cells develop.

The latest Nobel Prize honors the discovery of regulatory T-cells—known as the body's "security guards"—which patrol the body to disarm any immune cells that attack the body's own tissues.

We know that this process malfunctions in autoimmune diseases such as juvenile diabetes, multiple sclerosis, and RA.

A prize committee stated, "The discoveries have laid the foundation for a novel area of investigation and accelerated the development of innovative treatments, for instance for cancer and immune disorders."

In cancer, regulatory T-cells prevent the system from fighting the tumor, so studies are focused on lowering their quantity.

For autoimmune diseases, trials are exploring boosting T-reg cells so the organism is no longer being harmed. A comparable method could also be useful in reducing the risks of organ transplant failure.

Innovative Studies

Prof Sakaguchi, of Osaka University, conducted experiments on mice that had their immune gland removed, leading to self-attack conditions.

He showed that injecting immune cells from healthy animals could stop the disease—implying there was a system for blocking immune cells from attacking the body.

Dr. Brunkow, affiliated with the a research center in Seattle, and Fred Ramsdell, now at Sonoma Biotherapeutics in San Francisco, were studying an genetic immune disorder in mice and humans that led to the discovery of a genetic factor vital for the way regulatory T-cells operate.

"Their pioneering work has revealed how the body's defenses is kept in check by T-reg cells, preventing it from accidentally targeting the healthy cells," commented a prominent physiology expert.

"The work is a striking illustration of how fundamental physiological research can have far-reaching implications for human health."