Mon Oct 06 12:14:40 UTC 2025: Okay, here’s a news article summarizing the provided text:
**Headline: Immunologists Brunkow, Ramsdell, and Sakaguchi Awarded 2025 Nobel Prize in Medicine**
**Stockholm, Sweden – October 7, 2025** – Mary E. Brunkow, Fred Ramsdell, and Shimon Sakaguchi have been jointly awarded the 2025 Nobel Prize in Physiology or Medicine for their groundbreaking discoveries concerning the role of regulatory T cells (Treg cells) in immune system function. The announcement was made Monday at the Nobel Assembly at Karolinska Institutet in Stockholm.
Their research has shed light on the critical process of peripheral immune tolerance – how the immune system distinguishes between foreign invaders and the body’s own tissues. Specifically, their work identifies Treg cells as vital components that prevent immune cells from mistakenly attacking the host, leading to autoimmune diseases.
Japanese immunologist Shimon Sakaguchi, currently at Osaka University, is credited with the initial discovery of Treg cells in 1995. His research demonstrated that these specialized T-cells, unlike their counterparts that fight off pathogens, function to calm the immune system and prevent self-attack.
Building upon Sakaguchi’s findings, Mary Brunkow, senior program manager at the Institute for Systems Biology in Seattle, and Fred Ramsdell, scientific advisor at Sonoma Biotherapeutics in Washington, investigated a mutation in mice that caused their immune systems to attack their own tissues. Their research pinpointed the underlying mechanisms of this autoimmune response, further solidifying the importance of Treg cells.
Their collective work has revolutionized our understanding of immune system regulation and opened new avenues for the development of therapies targeting autoimmune diseases. The Nobel Committee recognized the profound impact of their research on the field of medicine.
First Piper 