🔗 Share this article

The prestigious award in medical science has been awarded for revolutionary discoveries that clarify how the body's defense network attacks dangerous pathogens while protecting the body's own cells.

Three renowned researchers—from Japan Prof. Sakaguchi and US scientists Dr. Brunkow and Dr. Ramsdell—share this accolade.

The work uncovered specialized "security guards" within the defense system that remove malfunctioning immune cells that could attacking the organism.

The discoveries are now paving the way for innovative therapies for autoimmune diseases and cancer.

The laureates will divide a prize fund worth 11m SEK.

Decisive Findings

"The work has been essential for understanding how the body's defenses operates and the reason we don't all suffer from severe self-attack conditions," stated the head of the Nobel Committee.

This team's studies explain a core question: How does the immune system defend us from countless infections while keeping our own tissues intact?

The immune system employs immune cells that search for indicators of disease, even viruses and germs it has not met before.

These defenders utilize sensors—called recognition units—that are generated randomly in countless combinations.

That provides the defense network the capacity to combat a broad range of threats, but the randomness of the process inevitably creates immune cells that can attack the body.

Security Guards of the Body

Scientists previously knew that a portion of these problematic defense cells were destroyed in the thymus—the site where white blood cells develop.

This year's award honors the identification of regulatory T-cells—described as the body's "peacekeepers"—which travel through 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 juvenile diabetes, MS, and RA.

A Nobel panel added, "The findings have established a novel area of research and accelerated the creation of new treatments, for example for tumors and autoimmune diseases."

Regarding malignancies, regulatory T-cells block the system from attacking the tumor, so studies are aimed at reducing their quantity.

For self-attack disorders, trials are exploring increasing T-reg cells so the body is no longer being harmed. A similar approach could also be effective in minimizing the chances of transplanted organ rejection.

Innovative Experiments

Prof Shimon Sakaguchi, of a Japanese institution, performed tests on mice that had their immune gland removed, leading to autoimmune disease.

The researcher showed that injecting immune cells from other animals could prevent the disease—implying there was a system for preventing defenders from attacking the body.

Dr. Brunkow, from the a research center in a US city, and Fred Ramsdell, currently at a biotech firm in San Francisco, were investigating an genetic autoimmune disease in rodents and humans that led to the identification of a gene vital for how T-regs operate.

"Their groundbreaking work has revealed how the body's defenses is controlled by regulatory T cells, stopping it from mistakenly attacking the body's own tissues," commented a prominent physiology expert.

"The work is a striking example of how fundamental biological research can have far-reaching consequences for human health."