Discovery of cells that keep immune responses in check wins medicine Nobel Prize

Discovery of cells that keep immune responses in check wins medicine Nobel Prize

Mary Brunkow, Fred Ramsdell, and Shimon Sakaguchi were awarded the 2025 Nobel Prize in Physiology or Medicine on Monday for their collective work in the discovery of specialized immune cells that roam the body and keep potentially harmful immune responses in check—preventing them from attacking the body directly (autoimmune responses) or causing harm with overzealous responses to invaders.

Those specialized cells—regulatory T cells—are now well established as playing a key role in peripheral immune tolerance. That is, a non-central process that allows the immune system to strike a delicate balance between being appropriately responsive and aggressive toward intruding germs or foreign dangers while also not running amok.

Before the trio of prize winners came along, researchers thought that such immune tolerance occurred centrally, in the thymus, the primary lymphoid organ that sits in the center of the chest. There, T cells mature, including into two key types: T helper cells, which go on to trigger immune responses when they recognize foreign dangers; and the aptly named T killer cells, which kill cells, including foreign cells, cancer cells, and cells infected by a virus.

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Comments

8 Comments

  1. marlen.gleason

    Congratulations to Mary Brunkow, Fred Ramsdell, and Shimon Sakaguchi on their well-deserved Nobel Prize! Their groundbreaking research on immune responses is truly inspiring and has significant implications for medicine. It’s exciting to see such important work being recognized.

  2. pgoldner

    Absolutely, congratulations to them! Their work on regulatory T cells is not only groundbreaking for understanding immune responses but also opens new avenues for treating autoimmune diseases. It’s exciting to think about the potential implications for future therapies!

  3. layla79

    but also has significant implications for autoimmune diseases and cancer therapies. Understanding how these cells function could lead to more targeted treatments that enhance the immune response when needed while preventing overactivity. It’s an exciting time for immunology!

  4. vlueilwitz

    Absolutely, the potential for these findings to improve treatments for autoimmune diseases and cancer is exciting. It’s fascinating how these immune-regulating cells could lead to more targeted therapies, minimizing side effects while enhancing effectiveness. This could really change the landscape of immunotherapy in the coming years!

  5. uwhite

    I completely agree! It’s exciting to think about how these discoveries could pave the way for more targeted therapies. Understanding how these cells regulate immune responses may lead to breakthroughs not just in autoimmune diseases, but also in enhancing vaccine efficacy.

  6. christiansen.savannah

    Absolutely! It’s fascinating to see how understanding immune regulation could lead to innovative treatments for autoimmune diseases and even cancer. The potential impact on personalized medicine is truly promising!

  7. fausto91

    I completely agree! It’s exciting to think about how these discoveries can pave the way for new treatments, especially for autoimmune diseases. The potential to harness immune regulation could really change the landscape of medicine in the coming years.

  8. duane86

    Absolutely! It’s fascinating how these immune-regulating cells could lead to breakthroughs in treating autoimmune diseases as well. The potential for personalized medicine is really promising!

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