Prestigious Award Honors Groundbreaking Immune System Research

This year's prestigious award in Physiology or Medicine was granted for revolutionary discoveries that clarify how the immune system attacks harmful infections while protecting the body's own cells.

Three renowned scientists—from Japan Shimon Sakaguchi and American experts Dr. Brunkow and Fred Ramsdell—share this accolade.

Their work uncovered specialized "sentinels" within the immune system that eliminate rogue immune cells capable of attacking the organism.

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

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

Crucial Findings

"Their work has been decisive for comprehending how the body's defenses operates and the reason we don't all suffer from severe autoimmune diseases," stated the chair of the award panel.

The trio's studies address a fundamental mystery: In what way does the defense system protect us from countless invaders while keeping our healthy cells intact?

Our immune system employs immune cells that search for indicators of disease, including viruses and bacteria it has never encountered.

Such defenders employ sensors—known as receptors—that are generated randomly in countless combinations.

That gives the defense network the ability to fight a broad range of threats, but the unpredictability of the process inevitably produces white blood cells that may attack the body.

Protectors of the Body

Scientists earlier knew that some of these harmful defense cells were eliminated in the immune organ—where immune cells mature.

The latest award honors the identification of T-reg cells—described as the body's "security guards"—which travel through the body to disarm other immune cells that assault the body's own tissues.

We know that this mechanism malfunctions in autoimmune diseases such as juvenile diabetes, MS, and RA.

The prize committee added, "The findings have established a novel area of research and spurred the development of new treatments, for example for cancer and autoimmune diseases."

Regarding malignancies, regulatory T-cells block the body from attacking the growth, so studies are focused on reducing their quantity.

In autoimmune diseases, experiments are testing increasing T-reg cells so the body is no longer under attack. A similar approach could also be effective in reducing the risks of organ transplant rejection.

Pioneering Experiments

Prof Shimon Sakaguchi, from Osaka University, performed experiments on mice that had their thymus extracted, leading to self-attack conditions.

The researcher demonstrated that introducing immune cells from healthy mice could prevent the illness—suggesting there was a mechanism for blocking defenders from harming the body.

Mary Brunkow, affiliated with the a research center in a US city, and Dr. Ramsdell, now at Sonoma Biotherapeutics in a California city, were investigating an genetic immune disorder in rodents and people that led to the discovery of a genetic factor vital for the way T-regs function.

"Their pioneering research has revealed how the immune system is controlled by regulatory T cells, stopping it from accidentally attacking the body's own tissues," commented a leading biological science expert.

"The work is a remarkable illustration of how basic biological research can have broad consequences for human health."