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This year's Nobel Prize in medical science was awarded for transformative findings that illuminate how the body's defense network attacks dangerous infections while protecting the body's own cells.

Three esteemed researchers—Japan's Shimon Sakaguchi and US scientists Dr. Brunkow and Fred Ramsdell—received this honor.

Their research identified unique "security guards" within the defense system that remove malfunctioning immune cells that could harming the organism.

The discoveries are now enabling new treatments for autoimmune diseases and cancer.

These winners will share a monetary award worth 11m Swedish kronor.

Decisive Findings

"Their work has been essential for comprehending how the body's defenses functions and the reason we do not all develop serious self-attack conditions," stated the head of the award panel.

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

Our immune system uses immune cells that search for signs of disease, even viruses and bacteria it has not met before.

These cells utilize sensors—known as receptors—that are produced by chance in a vast number of combinations.

This gives the immune system the ability to fight a broad range of threats, but the randomness of the process inevitably creates white blood cells that can attack the host.

Protectors of the Body

Scientists previously knew that a portion of these harmful white blood cells were destroyed in the thymus—the site where immune cells develop.

The latest Nobel Prize recognizes the identification of T-reg cells—known as the body's "peacekeepers"—which patrol the body to neutralize other immune cells that assault the body's own tissues.

It is known that this process fails in autoimmune diseases such as type-1 diabetes, MS, and rheumatoid arthritis.

A Nobel panel added, "The discoveries have laid the foundation for a new field of investigation and spurred the development of new therapies, for example for cancer and immune disorders."

Regarding malignancies, T-regs block the body from attacking the tumor, so research are focused on reducing their quantity.

For self-attack disorders, experiments are testing boosting T-reg cells so the organism is no longer being harmed. A similar approach could also be useful in minimizing the chances of organ transplant failure.

Pioneering Studies

Prof Shimon Sakaguchi, from Osaka University, performed tests on rodents that had their immune gland extracted, causing self-attack conditions.

The researcher showed that introducing immune cells from other mice could stop the illness—implying there was a mechanism for blocking defenders from attacking the host.

Dr. Brunkow, affiliated with the Institute for Systems Biology in a US city, and Dr. Ramsdell, now at Sonoma Biotherapeutics in a California city, were investigating an genetic immune disorder in mice and humans that resulted in the identification of a genetic factor vital for the way regulatory T-cells function.

"The pioneering work has revealed how the body's defenses is kept in check by T-reg cells, stopping it from mistakenly attacking the healthy cells," commented a leading biological science expert.

"This work is a remarkable illustration of how basic biological research can have far-reaching implications for human health."