Prestigious Award Recognizes Pioneering Body's Defenses Research

This year's prestigious award in medical science has been granted for revolutionary findings that clarify how the body's defense network attacks dangerous pathogens while sparing the healthy tissues.

Three renowned scientists—Japan's Shimon Sakaguchi and US experts Dr. Brunkow and Dr. Ramsdell—share this accolade.

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

These findings are now enabling innovative therapies for autoimmune diseases and malignancies.

The winners will share a prize fund worth 11 million SEK.

Crucial Discoveries

"Their research has been decisive for comprehending how the immune system operates and the reason we do not all suffer from serious autoimmune diseases," commented the head of the award panel.

The trio's studies address a core question: In what way does the defense system defend us from numerous infections while keeping our healthy cells unharmed?

Our immune system uses white blood cells that scan for indicators of disease, including pathogens and bacteria it has never encountered.

These defenders employ detectors—called receptors—that are generated by chance in a vast number of variations.

That gives the immune system the capacity to combat a wide array of threats, but the randomness of the mechanism unavoidably produces immune cells that can target the host.

Security Guards of the Immune System

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

This year's Nobel Prize honors the identification of T-reg cells—known as the body's "security guards"—which patrol the system to neutralize any defenders that assault the body's own tissues.

It is known that this process malfunctions in autoimmune diseases such as juvenile diabetes, multiple sclerosis, and RA.

The prize committee added, "The discoveries have established a new field of research and spurred the creation of innovative therapies, for example for cancer and autoimmune diseases."

Regarding malignancies, regulatory T-cells prevent the system from attacking the growth, so research are aimed at lowering their quantity.

For autoimmune diseases, experiments are exploring boosting regulatory T-cells so the organism is not under attack. A comparable approach could also be useful in reducing the chances of transplanted organ rejection.

Innovative Experiments

Prof Sakaguchi, from Osaka University, performed tests on mice that had their immune gland removed, leading to autoimmune disease.

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

Dr. Brunkow, from the a research center in Seattle, and Fred Ramsdell, now at a biotech firm in a California city, were studying an inherited autoimmune disease in rodents and people that led to the discovery of a genetic factor critical for the way regulatory T-cells operate.

"Their pioneering work has revealed how the immune system is controlled by T-reg cells, preventing it from mistakenly targeting the healthy cells," said a prominent physiology expert.

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