In a landmark discovery that has reshaped our understanding of genetics, Victor Ambros and Gary Ruvkun unveiled the vital role of microRNA in regulating gene activity. Conducted in the tiny roundworm C. elegans, their research revealed how these small RNA molecules control the timing and expression of genes, essential for the proper development of complex organisms. This groundbreaking work not only highlights the intricacies of genetic regulation but also underscores the potential implications for various diseases, including cancer and congenital disorders. Their findings mark a significant milestone in the field of molecular biology, paving the way for future research and therapeutic innovations.
BREAKING NEWS
The 2024 #NobelPrize in Physiology or Medicine has been awarded to Victor Ambros and Gary Ruvkun for the discovery of microRNA and its role in post-transcriptional gene regulation. pic.twitter.com/rg3iuN6pgY
Victor Ambros
Victor Ambros was born in 1953 in Hanover, New Hampshire, USA. He received his PhD from Massachusetts Institute of Technology (MIT), Cambridge, MA, in 1979 where he also did postdoctoral research 1979-1985. He became a Principal Investigator at Harvard University, Cambridge, MA in 1985. He was Professor at Dartmouth Medical School from 1992-2007 and he is now Silverman Professor of Natural Science at the University of Massachusetts Medical School, Worcester, MA.
Gary Ruvkun
Gary Ruvkun was born in Berkeley, California, USA in 1952. He received his PhD from Harvard University in 1982. He was a postdoctoral fellow at Massachusetts Institute of Technology (MIT), Cambridge, MA, 1982-1985. He became a Principal Investigator at Massachusetts General Hospital and Harvard Medical School in 1985, where he is now Professor of Genetics.
This year’s Nobel Prize honors two scientists for their discovery of a fundamental principle governing how gene activity is regulated.
The information stored within our chromosomes can be likened to an instruction manual for all cells in our body. Every cell contains the same chromosomes, so every cell contains exactly the same set of genes and exactly the same set of instructions. Yet, different cell types, such as muscle and nerve cells, have very distinct characteristics. How do these differences arise? The answer lies in gene regulation, which allows each cell to select only the relevant instructions. This ensures that only the correct set of genes is active in each cell type.
Victor Ambros and Gary Ruvkun were interested in how different cell types develop. They discovered microRNA, a new class of tiny RNA molecules that play a crucial role in gene regulation. Their groundbreaking discovery revealed a completely new principle of gene regulation that turned out to be essential for multicellular organisms, including humans. It is now known that the human genome codes for over one thousand microRNAs. Their surprising discovery revealed an entirely new dimension to gene regulation. MicroRNAs are proving to be fundamentally important for how organisms develop and function.
Essential regulation
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This year’s Nobel Prize highlights the discovery of a key regulatory mechanism that controls gene activity in cells. While all cells share identical DNA, they express unique proteins through precise gene regulation, essential for specialized functions. Disruptions in this regulation can lead to serious diseases like cancer and diabetes.
Research on a small worm leads to a big breakthrough
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In the late 1980s, Victor Ambros and Gary Ruvkun, postdoctoral fellows in Robert Horvitz's lab, studied the tiny roundworm C. elegans to explore gene regulation during development. They focused on two mutant strains, lin-4 and lin-14, which exhibited timing defects in genetic program activation. Ambros had previously noted that lin-4 negatively regulated lin-14, but the mechanism behind this regulation remained unclear, prompting them to investigate further.
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Tiny RNAs with profound physiological importance
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