The way the human body senses cold has long been a mystery to scientists. When exposed to cold temperatures, a protein called TRPM8 is activated in nerve cells, transmitting the sensation to the brain. This protein’s behavior had never been fully understood until recently.
A team of researchers from the University of California, including David Julies, a co-recipient of the 2021 Nobel Prize in Physiology or Medicine, captured the first atomic-level images of the cold-sensing protein in action. Their article, published in the journal “Nature,” reveals how the protein changes when subjected to low temperatures, opening up new possibilities for treating cold-induced pain.
By studying capsaicin and menthol, Julius and his team identified the TRPV1 receptor responsible for sensing heat and the TRPM8 receptor responsible for sensing cold. The researchers discovered that TRPM8 undergoes shape changes when temperatures drop below 26°C, allowing ions like sodium and calcium to enter sensory nerve fibers and send electrical signals to the brain.
Understanding the mechanisms behind cold sensation could lead to the development of treatments for conditions like cold allodynia. Teresa Giráldez and Luis Romero recognize the significance of this research, noting the detailed explanation it provides for how we perceive cold temperatures.
Giráldez suggests that pinpointing the specific area of the molecule responsible for sensing cold could pave the way for regulating or modulating the body’s response to cold. The therapeutic potential of these findings offers hope for those suffering from cold-induced pain.
[Context: David Julius and his research team at the University of California made groundbreaking discoveries related to how the human body senses cold and heat, earning him a Nobel Prize in 2021.]
[Fact Check: The research was published in the journal “Nature,” showcasing the significance and credibility of the findings.]
