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The Nobel Prize in medical science has been granted for transformative discoveries that illuminate how the immune system attacks dangerous pathogens while protecting the healthy tissues.

Three renowned researchers—from Japan Shimon Sakaguchi and US scientists Mary Brunkow and Dr. Ramsdell—share this honor.

Their work identified specialized "sentinels" within the immune system that eliminate malfunctioning defense cells that could harming the organism.

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

These winners will share a monetary award valued at 11m Swedish kronor.

Decisive Findings

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

This trio's research explain a fundamental mystery: How does the defense system defend us from numerous invaders while keeping our own tissues unharmed?

Our immune system uses immune cells that search for indicators of disease, including pathogens and germs it has not met before.

These cells utilize sensors—called receptors—that are generated by chance in countless combinations.

This gives the immune system the ability to fight a broad range of threats, but the unpredictability of the process unavoidably produces immune cells that can attack the body.

Protectors of the Body

Scientists previously knew that some of these problematic defense cells were destroyed in the thymus—the site where immune cells mature.

This year's award honors the discovery of regulatory T-cells—described as the immune system's "peacekeepers"—which patrol the system to neutralize other defenders that attack the healthy cells.

We know that this process malfunctions in autoimmune diseases such as juvenile diabetes, MS, and rheumatoid arthritis.

The Nobel panel stated, "These findings have laid the foundation for a novel area of investigation and spurred the creation of new therapies, for example for cancer and autoimmune diseases."

Regarding malignancies, T-regs prevent the body from attacking the tumor, so research are aimed at lowering their numbers.

For self-attack disorders, experiments are exploring boosting T-reg cells so the body is not being harmed. A similar approach could also be useful in minimizing the risks of organ transplant rejection.

Innovative Studies

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

He demonstrated that introducing defense cells from healthy animals could stop the illness—implying there was a mechanism for preventing defenders from harming the host.

Dr. 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 genetic factor vital for the way regulatory T-cells function.

"Their groundbreaking research has uncovered how the immune system is controlled by regulatory T cells, stopping it from accidentally targeting the body's own tissues," said a prominent biological science specialist.

"The work is a striking example of how fundamental physiological research can have far-reaching implications for public health."