Live Blogger: Rachael Baliira
Editors: Madison Fitzgerald and Ryan Schildcrout
This piece was written live during the 8th annual RNA Symposium, “Unmasking the Power of RNA: From Structure to Medicine” hosted by the University of Michigan’s Center for RNA Biomedicine. Follow MiSciWriters’ coverage of this event on Twitter with the hashtag #umichrna.
When you look back at your baby photo, first grade school picture with missing teeth, or even your prom photo, and compare them to your latest selfie, have you stopped to marvel at how you’ve developed into the person you are now? If you dive into the mechanisms that ensure normal development, cell differentiation and fate, you would be amazed at all that has to go right to make you ‘you.’ Your body achieves this through gene silencing, which is a negative feedback mechanism that regulates gene expression to define cell fate and timely gene expression. Micro-RNAs (miRNA) are the small agents that carry out gene silencing. They suppress unwanted expression of specific genes by binding to their mature transcripts, known as messenger RNA (mRNA), so that the cell only expresses proteins that are needed at the time. When this happens, the marked mRNA are destroyed instead of being translated into a protein. Thus, miRNA-dependent silencing of gene expression is essential for normal development and cell differentiation states. Over the years, scientists studying miRNA have uncovered much about miRNA-dependent gene silencing activity but there is still much to understand about how miRNAs come to be. Luckily, miRNA synthesis and regulation is a matter of great importance to the Joshua-Tor lab.
Continue reading “Dr. Leemor Joshua-Tor: Mad about U: Regulating Let7 Pre-miRNA” →