🔗 Share this article

This year's prestigious award in Physiology or Medicine has been granted for transformative discoveries that clarify how the body's defense network attacks dangerous pathogens while sparing the body's own cells.

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

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

The discoveries are now paving the way for new therapies for immune disorders and malignancies.

The winners will divide a monetary award worth 11 million SEK.

Crucial Findings

"The research has been essential for comprehending how the body's defenses operates and why we do not all suffer from severe autoimmune diseases," stated the chair of the award panel.

This trio's research explain a fundamental mystery: How does the immune system defend us from numerous infections while leaving our healthy cells intact?

The immune system employs white blood cells that scan for signs of infection, even viruses and germs it has not met before.

These defenders utilize detectors—known as receptors—that are generated by chance in a vast number of combinations.

That gives the defense network the ability to combat a broad range of threats, but the randomness of the mechanism unavoidably creates immune cells that can attack the body.

Security Guards of the Body

Researchers previously understood that some of these problematic white blood cells were destroyed in the immune organ—the site where white blood cells mature.

This year's award honors the identification of T-reg cells—known as the immune system's "security guards"—which patrol the body to neutralize other defenders that assault the healthy cells.

It is known that this process malfunctions in self-attack conditions such as type-1 diabetes, MS, and RA.

A prize committee stated, "The findings have laid the foundation for a new field of investigation and accelerated the creation of new treatments, for instance for tumors and immune disorders."

Regarding cancer, regulatory T-cells block the body from attacking the growth, so research are aimed at lowering their quantity.

In self-attack disorders, experiments are testing boosting T-reg cells so the organism is no longer under attack. A comparable approach could also be effective in reducing the chances of transplanted organ failure.

Pioneering Studies

Prof Shimon Sakaguchi, from Osaka University, conducted experiments on rodents that had their thymus extracted, causing self-attack conditions.

The researcher showed that injecting defense cells from other animals could prevent the illness—suggesting there was a system for preventing defenders from attacking the host.

Mary Brunkow, affiliated with the a research center in a US city, and Dr. Ramsdell, currently at Sonoma Biotherapeutics in a California city, were studying an genetic autoimmune disease in mice and people that led to the identification of a gene critical for the way regulatory T-cells function.

"Their groundbreaking research has revealed how the body's defenses is kept in check by regulatory T cells, preventing it from accidentally targeting the body's own tissues," said a prominent biological science expert.

"The work is a remarkable illustration of how fundamental biological study can have broad consequences for human health."