🔗 Share this article

This year's prestigious award in medical science has been awarded for transformative discoveries that clarify how the immune system targets harmful infections while sparing the healthy tissues.

A trio of renowned researchers—Japan's Prof. Sakaguchi and US scientists Dr. Brunkow and Fred Ramsdell—received this accolade.

Their research identified specialized "security guards" within the immune system that remove rogue immune cells that could harming the body.

The findings are now paving the way for innovative treatments for autoimmune diseases and malignancies.

The laureates will share a monetary award valued at 11m Swedish kronor.

Crucial Discoveries

"The research has been decisive for comprehending how the immune system functions and why we don't all suffer from serious autoimmune diseases," commented the chair of the Nobel Committee.

The trio's research explain a core question: In what way does the defense system defend us from numerous infections while keeping our own tissues unharmed?

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

These cells employ detectors—called receptors—that are generated randomly in a vast number of variations.

That gives the defense network the ability to fight a wide array of threats, but the unpredictability of the process unavoidably produces white blood cells that can target the host.

Protectors of the Immune System

Scientists previously understood that some of these problematic defense cells were destroyed in the immune organ—where white blood cells develop.

The latest Nobel Prize recognizes the identification of regulatory T-cells—known as the immune system's "peacekeepers"—which patrol the system to disarm other immune cells that assault the healthy cells.

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

A Nobel panel added, "The findings have established a new field of investigation and spurred the creation of innovative treatments, for instance for tumors and immune disorders."

Regarding malignancies, T-regs prevent the body from attacking the growth, so studies are aimed at reducing their quantity.

For autoimmune diseases, trials are exploring increasing T-reg cells so the body is not being harmed. A similar approach could also be useful in reducing the risks of transplanted organ rejection.

Pioneering Experiments

Professor Shimon Sakaguchi, of a Japanese institution, performed experiments on rodents that had their immune gland extracted, leading to autoimmune disease.

The researcher demonstrated that introducing immune cells from healthy animals could stop the disease—suggesting there was a system for blocking defenders from attacking the body.

Mary Brunkow, affiliated with the Institute for Systems Biology in Seattle, and Fred Ramsdell, now at Sonoma Biotherapeutics in a California city, were investigating an inherited immune disorder in mice and humans that resulted in the discovery of a genetic factor critical for how T-regs operate.

"The groundbreaking research has uncovered how the immune system is kept in check by T-reg cells, preventing it from mistakenly targeting the healthy cells," commented a leading biological science expert.

"This research is a striking illustration of how fundamental physiological study can have broad implications for human health."