The Discoveries That Revealed How the Immune System Learns Self-Control
You, the reader, may or may not know it, but your body is embroiled in a never-ending war against an unimaginable number of pathogens at this very moment. From head to toe, you are covered by bacteria, viruses, parasites and, numerous compounds of dubious origin (just kidding!). And yet, you are hale and healthy (at least most of the time!). But how do your cells know, what job they have to do?
They have this powerful capability to recognize patterns garnered over time with evolution. This similar capability extends to removing those cells who recognize patterns on your own cells. This is the invisible dance performed by your immune system — the one that protects your otherwise fragile body. It holds a long list of checks and balances that contract and expand your arsenal in response to pathogens.
What has this got to do with the Nobel Prize of Medicine of 2025, you ask? Why, everything, dear reader! You see for a long time, we were learning more and more about the expansion of the immune system to fight a pathogen incursion, but our knowledge of the contraction after the elimination of the pathogen wasn’t very well understood. There were suspicions, but science needs concrete evidence. This is where the three celebrated scientists, all three immunologists, arrive on the scene to shed light on something very important happening at the periphery of the battalions of immune response.
The cascade starts in 1995 with a publication by Dr. Sakaguchi, which revealed the presence of Regulatory T cells — a unique class of T cells that act as an elite force responsible for shutting down the immune response and initiating the process of tissue repair. He demonstrated that the absence of these cells was associated with a range of autoimmune conditions, as the body was unable to deactivate the overreactive system after an infection.
Soon afterwards, in 2001, both Dr. Brunkow and Dr. Ramsdell used the model mice called Scurfy (sf) that displays a lethality due to mutation in the Foxp3 gene leading to the uncontrolled immune response and over proliferation of the Lymphocytes. They further linked similar autoimmune conditions to the human analogue of the Foxp3 gene.
In 2003, Dr. Sakaguchi group followed up by demonstrating that the same gene, Foxp3, is responsible for the development and the effector functions of the Regulatory T Cells, coming full circle to the story of the beginning of the peripheral immune tolerance.
We, at the Master LIVE, were overjoyed at the recognition of this work by the Nobel Committee, considering that these findings have changed our understanding of immunology so much in the recent years. (The immunology textbooks always scramble to update after findings!)
A paradigm shift in our approach to understand how our body works and maintains its harmony. The whole LIVE community would strive to keep up the spirit of collaborative exploration and persistence drive to further the boundaries of our understanding of the world around us. So, dear reader, take a breather and be inspired for there are still hidden scientific mysteries to be found all around us.
Nobel Prize in Medicine 2025: Celebrating the Hidden Heroes in Periphery
The Discoveries That Revealed How the Immune System Learns Self-Control
They have this powerful capability to recognize patterns garnered over time with evolution. This similar capability extends to removing those cells who recognize patterns on your own cells. This is the invisible dance performed by your immune system — the one that protects your otherwise fragile body. It holds a long list of checks and balances that contract and expand your arsenal in response to pathogens.
What has this got to do with the Nobel Prize of Medicine of 2025, you ask? Why, everything, dear reader! You see for a long time, we were learning more and more about the expansion of the immune system to fight a pathogen incursion, but our knowledge of the contraction after the elimination of the pathogen wasn’t very well understood. There were suspicions, but science needs concrete evidence. This is where the three celebrated scientists, all three immunologists, arrive on the scene to shed light on something very important happening at the periphery of the battalions of immune response.
The cascade starts in 1995 with a publication by Dr. Sakaguchi, which revealed the presence of Regulatory T cells — a unique class of T cells that act as an elite force responsible for shutting down the immune response and initiating the process of tissue repair. He demonstrated that the absence of these cells was associated with a range of autoimmune conditions, as the body was unable to deactivate the overreactive system after an infection.
Soon afterwards, in 2001, both Dr. Brunkow and Dr. Ramsdell used the model mice called Scurfy (sf) that displays a lethality due to mutation in the Foxp3 gene leading to the uncontrolled immune response and over proliferation of the Lymphocytes. They further linked similar autoimmune conditions to the human analogue of the Foxp3 gene.
In 2003, Dr. Sakaguchi group followed up by demonstrating that the same gene, Foxp3, is responsible for the development and the effector functions of the Regulatory T Cells, coming full circle to the story of the beginning of the peripheral immune tolerance.
We, at the Master LIVE, were overjoyed at the recognition of this work by the Nobel Committee, considering that these findings have changed our understanding of immunology so much in the recent years. (The immunology textbooks always scramble to update after findings!)
A paradigm shift in our approach to understand how our body works and maintains its harmony. The whole LIVE community would strive to keep up the spirit of collaborative exploration and persistence drive to further the boundaries of our understanding of the world around us. So, dear reader, take a breather and be inspired for there are still hidden scientific mysteries to be found all around us.
2025.11.05 – Master LIVE M1 Students
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