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Different Strokes For DNA Methylation Patterns in Stem Cell Lines

July 15, 2011

Although we often think of human embryonic stem cell (hESC) lines as being pretty much the same (kind of like the Kardashian sisters), they really are different according to a report by UCLA researchers. Even though they usually can differentiate into the same cell types, hESCs have different methylation patterns—and that may affect gene expression. […]

IsomiRs, 3′ variants May Shine Light on miRNA Function

July 15, 2011

As next-generation sequencing continues to explode in popularity, researchers are finding out that nucleic acids are a lot more complex than they ever imagined. One miRNA gene = one miRNA? Nah, that would be too simple. Instead, just like their protein-coding counterparts, miRNA genes can give rise to multiple variants, or isomiRs. Now researchers in […]

Cancer Cells Keep Their Methylome Options Open

July 6, 2011

As new research finds tumor cells don’t like to be tied to just one methylation pattern, they prefer a variety. In fact, that variation within tumors gives cells a big leg-up in challenging environments, and possibly even helps them avoid detection and treatment. Building on their earlier work on CpG shores and stochastic variation, the […]

EpiGenie Environmental Epigenetics Review

July 6, 2011

Thanks 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 Methylome

July 6, 2011

If 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 […]

Folic Acid During Pregnancy: Friend or Foe?

June 30, 2011

Most of us have a hard time keeping up with the latest health recommendations . . . what’s good one year turns out to be a bad idea the next (kinda like the final season of Lost). For years, doctors have been telling women to take folic acid supplements before and during pregnancy to prevent […]

In Search of 5-hmC’s Tissue Whereabouts

June 16, 2011

5-hydroxymethylcytosine (5-hmC) has been hiding out in the genomic shadows too long, but now researchers armed with a new technique, can track 5-hmC not just to the specific tissue it’s holed up in, but also the developmental stage as well. Or as Martha and the Vandellas put it, there’s “nowhere to run to, baby, nowhere […]

Foursome of DNA Methylation Subgroups Found in Colorectal Cancer

June 16, 2011

As if one kind of colorectal cancer (CRC) isn’t bad enough, new research has uncovered four DNA methylation-based versions of the insidious disease. Our So-Cal neighbors, Toshinori Hinoue and Daniel Weisenberger and team over at the USC Epigenome Center cranked out genome-scale DNA methylation profiles for 125 colorectal tumor and 29 normal tissue samples. The […]

DNA and Histone H3K9 Methylation Often Work Alone

June 14, 2011

Nature 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 Amplification

June 10, 2011

In 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, […]

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