🔗 Share this article

This year's prestigious award in medical science has been awarded for transformative discoveries that illuminate how the body's defense network attacks harmful infections while protecting the healthy tissues.

A trio of renowned scientists—Japan's Shimon Sakaguchi and US experts Dr. Brunkow and Dr. Ramsdell—share this honor.

Their work uncovered specialized "sentinels" within the defense system that remove malfunctioning immune cells that could attacking the body.

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

These laureates will share a prize fund worth 11 million SEK.

Crucial Discoveries

"Their research has been essential for comprehending how the body's defenses operates and the reason we do not all develop serious autoimmune diseases," commented the chair of the award panel.

This trio's research explain a fundamental question: How does the defense system protect us from countless invaders while leaving our healthy cells unharmed?

Our immune system employs white blood cells that scan for signs of infection, even viruses and germs it has never encountered.

These cells employ detectors—known as recognition units—that are produced randomly in a vast number of variations.

This provides the immune system the capacity to combat a wide array of invaders, but the unpredictability of the process unavoidably creates immune cells that may target the body.

Security Guards of the Body

Scientists earlier knew that a portion of these problematic white blood cells were eliminated in the immune organ—the site where immune cells develop.

This year's Nobel Prize recognizes the discovery of regulatory T-cells—known as the body's "peacekeepers"—which patrol the system to neutralize other defenders that attack the body's own tissues.

It is known that this process fails in autoimmune diseases such as type-1 diabetes, multiple sclerosis, and rheumatoid arthritis.

The Nobel panel stated, "These discoveries have established a novel area of investigation and accelerated the creation of new therapies, for instance for tumors and autoimmune diseases."

In malignancies, T-regs block the body from attacking the growth, so research are focused on reducing their quantity.

For autoimmune diseases, experiments are exploring increasing T-reg cells so the organism is no longer under attack. A similar approach could also be effective in reducing the chances of organ transplant rejection.

Innovative Experiments

Prof Shimon Sakaguchi, of a Japanese institution, performed experiments on mice that had their immune gland removed, leading to self-attack conditions.

The researcher demonstrated that injecting defense cells from healthy animals could prevent the disease—implying there was a system for blocking defenders from attacking the host.

Dr. Brunkow, from the Institute for Systems Biology in Seattle, and Dr. Ramsdell, now at a biotech firm in San Francisco, were investigating an inherited immune disorder in rodents and humans that led to the discovery of a genetic factor vital for how regulatory T-cells operate.

"The groundbreaking research has revealed how the immune system is kept in check by T-reg cells, preventing it from accidentally attacking the body's own tissues," said a prominent biological science expert.

"This work is a striking illustration of how basic physiological research can have far-reaching consequences for human health."