🔗 Share this article

The Nobel Prize in Physiology or Medicine was awarded for transformative findings that clarify how the body's defense network attacks dangerous pathogens while protecting the body's own cells.

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

The research uncovered unique "security guards" within the defense system that eliminate malfunctioning defense cells capable of attacking the body.

These findings are now paving the way for innovative therapies for autoimmune diseases and malignancies.

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

Decisive Findings

"Their work has been essential for comprehending how the immune system operates and why we do not all suffer from serious autoimmune diseases," stated the chair of the award panel.

The team's studies address a core mystery: How does the defense system defend us from numerous invaders while keeping our healthy cells unharmed?

Our immune system employs white blood cells that search for signs of disease, including pathogens and bacteria it has not met before.

These defenders employ sensors—called recognition units—that are produced by chance in a vast number of variations.

That gives the immune system the ability to fight a broad range of threats, but the randomness of the process inevitably creates white blood cells that may target the host.

Protectors of the Immune System

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

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

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

A Nobel panel stated, "The discoveries have laid the foundation for a new field of investigation and spurred the development of innovative treatments, for instance for tumors and immune disorders."

Regarding cancer, regulatory T-cells block the body from attacking the tumor, so studies are focused on lowering their numbers.

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

Innovative Studies

Professor Shimon Sakaguchi, of Osaka University, conducted tests on mice that had their immune gland removed, causing self-attack conditions.

He demonstrated that introducing immune cells from healthy mice could prevent the disease—implying there was a system for blocking defenders from attacking the host.

Mary Brunkow, affiliated with the a research center in a US city, and Dr. Ramsdell, currently at a biotech firm in a California city, were studying an genetic immune disorder in rodents and people that led to the identification of a gene critical for how regulatory T-cells function.

"The groundbreaking research has uncovered how the body's defenses is kept in check by regulatory T cells, stopping it from accidentally targeting the body's own tissues," commented a prominent biological science expert.

"The research is a striking illustration of how basic biological research can have far-reaching consequences for human health."