Non-Hodgkin Lymphoma’s Trouble with Histone ModificationsJuly 27, 2011They say it’s the quiet ones that you have to watch out for. Canadian researchers may have had that in mind when they pondered the genetic causes of non-Hodgkin lymphoma (NHL). Through some extra digging (and sequencing), they uncovered several mutant genes that had remained hidden until now, including some that have roles in histone […]
H3K27me3 Conjurs Epigenetic Memories of Winters PastJuly 26, 2011With temperatures soaring above 100°F in many parts of the U.S., it can be awfully hard to remember what last winter was like. But thanks to histone modifications, many plants have a built-in memory of cold periods—which is important for flowering. Plants not only remember that they went through a cold period, but they also […]
ENCODE and Roadmap Epigenomics Antibody Validation DatabaseJuly 19, 2011Many epigenetics techniques and projects rely on high-quality antibodies, but not all commercial antibodies perform well enough to get the job done. On top of that, there’s no uniform standard, or easy steps to fully validate a good antibody. With help of the Park lab at Harvard Medical School, there is now a place that […]
EpiGenie Environmental Epigenetics ReviewJuly 6, 2011Thanks to growing interest from the general public, environmental epigenetics is a red-hot topic with no signs of cooling off anytime soon. We’ve certainly covered our fair share of research with an environmental slant to it, so if you want to review, research, or just plain get up to speed on the subject, these articles […]
Hitting the (Hair Dye) Bottle May Alter DNA MethylomeJuly 6, 2011If you change your hair color more frequently than Lady Gaga, you may be affecting your DNA methylation patterns, according to a new study in the journal Epigenetics. To gain a better understanding of the “normal” human methylome, researchers used BeadChip arrays to analyze the methylation of 26,486 CpG loci in the blood of 205 […]
DNA and Histone H3K9 Methylation Often Work AloneJune 14, 2011Nature is a master of using specific tools for specific jobs, so it’s not too surprising that DNA methylation and SETDB1/H3K9 methylation work on different sets of genes, as University of British Columbia researchers report. But occasionally those tools are more like a Swiss Army knife, like SETDB1, which also methylates H3K9s near endogenous retroviruses […]
Meet LinDA: Single tube ChIP DNA AmplificationJune 10, 2011In the movies, it’s never a problem for CSI techs to get DNA information from the tiniest speck of blood or a just few skin cells. But, for real researchers trying to figure out where transcription factors bind or what’s going on with histones, things are a little harder. That’s why researchers in France, China, […]
Histone Tails Take the Lead In De Novo MethylationMay 29, 2011“Newborn” (or de novo) DNA sequences come into this world just like newborn human babies—naked. So, how do new sequences get their DNA methylation on? Researchers from the Chinese Academy of Sciences say they’ve figured out what happens after the histones settle in: H3 tails that lack methylation at K4 bind to and activate de […]
ATP-Dependent Factors Help Nucleosomes Get OrganizedMay 19, 2011Those of us with messy desks or bench spaces know how difficult it can be to get organized. But don’t feel bad–a new paper in Science suggests that nucleosomes need help from “professional organizers” to form nice, evenly spaced arrays in gene promoters. For decades now, researchers have been trying to figure out how nucleosomes […]
Decoding the Epigenetic Role of Non-coding RNAsMay 18, 2011About 90% of our genome is transcribed, but only 1-2% of the transcripts encode proteins. So what are all of those non-coding RNAs (ncRNAs) doing? A better question might be: what aren’t they doing? In addition to regulating gene expression at the transcriptional and post-transcriptional levels, ncRNAs play a big part in the control of […]