🔗 Share this article

This year's Nobel Prize in medical science has been awarded for revolutionary findings that illuminate how the immune system attacks harmful pathogens while sparing the body's own cells.

A trio of esteemed researchers—Japan's Shimon Sakaguchi and US experts Mary Brunkow and Dr. Ramsdell—received this accolade.

The work uncovered specialized "security guards" within the defense system that remove malfunctioning defense cells capable of harming the body.

The discoveries are now paving the way for new treatments for immune disorders and cancer.

These laureates will share a monetary award worth 11 million Swedish kronor.

Crucial Discoveries

"Their work has been decisive for understanding how the immune system operates and the reason we don't all suffer from serious self-attack conditions," stated the head of the award panel.

The trio's research explain a core mystery: In what way does the defense system protect us from numerous invaders while keeping our own tissues intact?

The body's protection system employs immune cells that search for signs of infection, even viruses and bacteria it has never encountered.

These defenders utilize detectors—known as recognition units—that are produced randomly in a vast number of combinations.

This provides the immune system the ability to fight a wide array of threats, but the unpredictability of the process inevitably creates white blood cells that can attack the body.

Protectors of the Body

Scientists previously understood that some of these problematic white blood cells were eliminated in the thymus—the site where white blood cells develop.

This year's award recognizes the identification of regulatory T-cells—known as the immune system's "security guards"—which patrol the system to disarm other immune cells that assault the body's own tissues.

We know that this mechanism malfunctions in self-attack conditions such as type-1 diabetes, MS, and rheumatoid arthritis.

The Nobel panel added, "The findings have established a new field of investigation and spurred the development of innovative therapies, for example for cancer and immune disorders."

Regarding malignancies, regulatory T-cells block the system from fighting the growth, so studies are focused on lowering their quantity.

For autoimmune diseases, experiments are testing increasing regulatory T-cells so the organism is no longer being harmed. A similar method could also be useful in minimizing the chances of organ transplant failure.

Innovative Studies

Prof Sakaguchi, from Osaka University, conducted tests on rodents that had their thymus removed, causing autoimmune disease.

The researcher showed that introducing defense cells from other mice could stop the illness—suggesting there was a mechanism for blocking immune cells from harming the body.

Mary Brunkow, affiliated with the a research center in Seattle, 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 critical for how T-regs operate.

"Their groundbreaking research has uncovered how the body's defenses is controlled by regulatory T cells, preventing it from accidentally attacking the body's own tissues," said a leading biological science specialist.

"This research is a remarkable example of how fundamental physiological research can have broad implications for human health."