Mon Oct 07 22:32:15 UTC 2024: ## Nobel Prize in Physiology or Medicine Awarded for Discovery of MicroRNA Gene Regulation
**Stockholm, Sweden** – U.S. scientists Victor Ambros and Gary Ruvkun have been awarded the 2024 Nobel Prize in Physiology or Medicine for their groundbreaking discovery of microRNA, a revolutionary mechanism for gene regulation in cells.
The pair’s research, conducted initially in the tiny roundworm *Caenorhabditis elegans*, revealed how microRNAs control the expression of genes, ultimately determining which proteins are produced within a cell. This discovery has fundamentally changed our understanding of gene regulation, previously believed to be solely controlled by transcription factors.
“The seminal discovery of microRNA has introduced a new and unexpected mechanism of gene regulation,” stated Olle Kämpe, vice chair of the Nobel Committee for Physiology or Medicine.
Ambros and Ruvkun’s work began in the 1980s when they were studying two “mutant” forms of *C. elegans* with different developmental traits. They pinpointed a gene called *lin-4* that negatively regulated another gene, *lin-14*, but the exact mechanism remained unclear.
Through their independent research, both scientists discovered that *lin-4* produced a tiny RNA molecule, too small to encode a protein, that bound to the mRNA of *lin-14*, preventing its translation into protein. This mechanism, orchestrated by microRNAs, represented a completely novel form of gene regulation.
Further research revealed that microRNAs are not unique to *C. elegans* but are present in humans and most other animals. In fact, humans possess over 1,000 different microRNA genes, regulating a vast majority of their genes.
The discovery of microRNAs has immense implications for our understanding of diseases like cancer, diabetes, and autoimmune diseases. Dysregulation of microRNA networks is believed to play a significant role in cancer growth, opening up possibilities for new therapeutic approaches.
“The significance of the discovery of microRNA is that it made scientists aware of the very complex and nuanced layer of regulation whereby genes and our cells talk to each other,” said Ambros, emphasizing the crucial role of model organisms like *C. elegans* in driving scientific advancements.
The Nobel Prize recognizes the remarkable impact of Ambros and Ruvkun’s discovery, which has transformed our understanding of gene regulation and opened new avenues for scientific exploration and therapeutic development.
First Piper 