🔗 Share this article

The prestigious award in medical science was awarded for transformative findings that clarify how the body's defense network targets dangerous infections while protecting the healthy tissues.

A trio of renowned scientists—from Japan Shimon Sakaguchi and American experts Mary Brunkow and Dr. Ramsdell—share this accolade.

The research uncovered unique "security guards" within the defense system that eliminate rogue immune cells that could harming the body.

These discoveries are now paving the way for innovative treatments for immune disorders and malignancies.

These laureates will divide a prize fund valued at 11m SEK.

Decisive Discoveries

"Their work has been decisive for comprehending how the body's defenses functions and why we don't all suffer from severe self-attack conditions," commented the head of the award panel.

This trio's studies address a core mystery: In what way does the immune system defend us from numerous invaders while leaving our own tissues unharmed?

The body's protection system uses immune cells that search for indicators of disease, even viruses and germs it has not met before.

These cells employ detectors—called recognition units—that are produced by chance in countless variations.

That provides the defense network the ability to fight a wide array of threats, but the unpredictability of the mechanism unavoidably produces immune cells that can target the body.

Protectors of the Immune System

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

This year's award recognizes the discovery of regulatory T-cells—described as the body's "security guards"—which patrol the system to disarm any immune cells that attack the healthy cells.

We know that this mechanism malfunctions in self-attack conditions such as juvenile diabetes, MS, and RA.

A Nobel panel stated, "These discoveries have established a novel area of investigation and accelerated the creation of new treatments, for instance for tumors and immune disorders."

In cancer, regulatory T-cells block the system from fighting the tumor, so studies are aimed at reducing their numbers.

For autoimmune diseases, trials are testing increasing T-reg cells so the organism is no longer under attack. A comparable method could also be effective in minimizing the chances of organ transplant failure.

Innovative Experiments

Professor Shimon Sakaguchi, from Osaka University, conducted experiments on rodents that had their thymus removed, leading to self-attack conditions.

The researcher demonstrated that introducing defense cells from other mice could stop the disease—implying there was a system for blocking immune cells from harming the host.

Dr. Brunkow, from the Institute for Systems Biology in a US city, and Fred Ramsdell, now at Sonoma Biotherapeutics in San Francisco, were studying an inherited immune disorder in rodents and people that led to the discovery of a genetic factor critical for how T-regs function.

"Their pioneering research has uncovered how the body's defenses is controlled by regulatory T cells, stopping it from accidentally targeting the body's own tissues," commented a prominent biological science specialist.

"The research is a striking example of how basic biological study can have broad implications for human health."