LNA miR-122 Inhibitors Put HCV in Lockdown in vivoDecember 3, 2009miR-122 is a talented regulator. Sure it can negatively regulate gene expression by binding 3’ UTRs of target mRNAs, but it’s also shown that it can bind 5’ UTRs in the HCV genome just as well, and act as a positive regulator, giving the virus a hand with replicating its genome. Facilitating viral replication? Well, […]
Pre-miRNA Importin and Exportin Strong As EverDecember 2, 2009In today’s global economy, imports and exports can ebb and flow dramatically depending on economic conditions. But in the fine-tuned cellular economy, where supply-demand runs the show, miRNA Importin and Exportin operate with consistency that would have most economists envious. When pre-miRNAs are shipped from the nucleus to the cytoplasm. Exportin-5 escorts the ~65 nt […]
Got miR-2861? Novel miRNA Is Linked to OsteoporosisNovember 18, 2009What can you do to keep your bones healthy and strong? In addition to sporting the ever-trendy milk mustache, you might want to avoid mutations in miR-2861, a newly discovered miRNA involved in osteoblast differentiation. A team of Chinese researchers identified miR-2861 by cloning miRNAs from primary mouse osteoblasts (the cells responsible for bone formation). […]
Sopping Up Regulatory Insights with miRNA SpongesNovember 17, 2009We’ve all seen those household cleaning commercials on the tele that show a super detergent that cuts through grease, whitens whites, and zaps pet odor effortlessly, so when we first got wind of miRNA sponges a few years back (Nature Methods, August 2007), we remember being interested but skeptical. But, if these vector-driven miRNA inhibitors […]
The Dark-side of Being a Regulatory Star: miRNA Labeling and ManipulationNovember 11, 2009It wasn’t that long ago when cellular miRNAs lived under the radar. They went to work on their targets each day and hung out with other members of the extended RISC family. Their small size and lack of poly-A tails may have kept them out of the spotlight for decades, but the last few years […]
Comparing Long ncRNAs lincRNAsNovember 11, 2009Despite all of the attention to the non-coding transcriptome lately, our knowledge about what most long intergenic non-coding RNA (lncRNA) transcripts do – if indeed they do anything at all, still has more holes than a Dunkin’ Donut shop. Luckily there are folks out there willing to step in to take on the dirty job […]
Context Is Key for miRNA Target SitesNovember 4, 2009If your boss were to tell you that you’re acting like a real ass, you’d probably start packing your desk, unless you’re auditioning for Eeyore in that upcoming Winnie the Pooh play in which case you’d be stoked. So much in life is all about the context…and miRNA regulation is no exception. A recent report […]
miRNA Target Prediction Program Round-upOctober 21, 2009As miRNA discovery continues to skyrocket, the obvious question is: What are these miRNAs targeting? Lately, that topic seems to be as hot as any “Jon & Kate Plus 8” gossip. Several programs have been created to get at that question, and predict targets for miRNAs, but it’s hard to know which ones are really […]
How Low Can They Go: Unusually Small RNAOctober 21, 2009Let’s all do the ncRNA limbo! They may not be as festive as the dance at the office holiday party, but non-coding RNAs are really getting down…in size anyway! It seems every few months, we’re learning about a new class of RNAs that’s even shorter than before. Recent work from Bino John’s group at the […]
Non-Coding (RNA) Doesn’t Have to Mean Non-SenseOctober 14, 2009Our understanding of non-coding RNAs has ramped up like a quarter pipe at the X Games over the last several years and, if recent publications are any indication, we’ve only scratched the surface. The realization that just a sliver of our vast transcriptomes is protein-coding, much of it is churned out in both directions, and […]