What is Suppressing The Suppressors?: Modified CTCFs linked to silenced tumor suppressorsMay 20, 2009Looking for exotic enzymes to silence tumor suppressor genes? You might be searching in vain. Maybe try looking for heterochromatin instead. Salk Institute postdoc Michael Witcher was baffled by what made p16INK4a not tick in breast cancer cells. He fed the genetic sequence into some prediction software, but it wasn’t much help. So he did […]
miRNAs Driving the Evolution of the Regulatory CockpitMay 8, 2009Recent discoveries in the field of epigenetics continue to transform the “light switch” examples of gene regulation with which the 30+ crowd was schooled into something a little more complicated…like an airplane cockpit. We’re not talking your average Cessna either, more like an Airbus A380. Evidence from a number of miRNA studies have added them […]
The Ups and Downs of miR-145 and OCT4 in hESCsApril 30, 2009Human embryonic stem cells (hESCs) are delicate little creatures. Left to their own devices – especially in culture — they want to differentiate or die. By now you’ve probably heard of the intricate network of factors that allow these cells to retain their stemness – some, like the transcription factors OCT4 and SOX2, prevent differentiation […]
Fine-Tuning mRNA Deliveries with Alternative PolyadenylationApril 28, 2009The US Post Office tried it a few years back when they added those four extra digits onto our zip codes, allowing advertisers to target us with SPAM with utmost precision. At EpiGenie, we too, are always looking for simpler ways to pass along targeted information (RSS feeds, telepathy etc.,) to an ever-increasing population of […]
Polycomb and Trithorax Proteins Dominating the In CrowdApril 23, 2009At EpiGenie, we do our best to keep up with the latest research trends in the epigenetics scene so we couldn’t help but notice that lately, the Polycomb (PcG) and Trithorax (TrxG) proteins are grabbing more headlines than Octa-Mom. Deservingly so, when you consider the critical role these developmental switchboards play in maintaining expression patterns […]
Genome Sequence Affects Heterochromatin SpreadingApril 17, 2009The establishment of heterochromatin is an important way for cells to repress transcription. Yet not much is known about the control of heterochromatin spreading into euchromatic domains. Therefore, researchers at Duke University used the Awesome Power of Yeast (Epi)Genetics to study how specific DNA sequences affect heterochromatin spreading. Their results are published in the April […]
Huh? miR-96 Tied to Hearing LossApril 17, 2009Over the years, mothers around the world have routinely warned their children of the imminent hearing loss resulting from too many Iron Maiden concerts, blasting Winger too loud on car stereos, or the permanently attached iPod earbuds that come standard with adolescents nowadays, but now we have scientific data to suggest our mothers and miR-96 […]
miRNA Promoter Elements Driving Cell-Specific ExpressionApril 10, 2009Whether you’re talking about real estate or miRNA expression, the phrase “location, location, location” expresses the undeniable importance of surroundings. Like protein-coding genes, miRNA genes can be turned on or off depending on the cellular context. However, mechanisms responsible for cell-specific miRNA expression are largely unknown because miRNA promoters are not as well characterized as […]
Feel the Burn: Epigenetic Changes After Exercise Improve Stress ResponseApril 10, 2009At EpiGenie, we’ve been struggling to find the time and motivation for exercise since we misplaced those Tae Bo tapes. Sure the treadmill would work, but then we’d have to move all the clothes hanging on it. However, some recent work from researchers at the University of Bristol in the UK, caught our attention. The […]
Research Team Takes a Deep Dive into Chromosome 21 Promoter MethylationApril 1, 2009When it comes to knowledge about DNA methylation sites in the human genome, there’s no such thing as too much information. That’s why researchers in Germany have mapped DNA methylation sites on chromosome 21 in exquisite detail?with single base pair and single allele resolution. Their results are reported in the March 27, 2009 issue of […]