Down is the New Up: Single Base-Pair Methylome Maps of CancerJune 29, 2017Navigating the highly variable features behind the epigenomic basis of cancer is no easy task: What’s up is down, what’s down is up! Thankfully, to aid our quest, the lab of Manel Esteller at the Bellvitge Biomedical Research Institute (IDIBELL) in Spain has brought forth a map as massive as the DNA methylation changes behind […]
Epromoters: Two Great Regulatory Functions for the Price of One!June 19, 2017Not many people can resist the allure of the ubiquitous neon signs promising fantastic two-for-the-price-of-one offers that promise to double the value of their hard-earned cash. Interestingly, these bargain offers also seem to be a feature in the human genome as a subset of promoters provide extra value by also acting as enhancers for other […]
HDACking Histone Acetylation With dCas9-HDAC3June 12, 2017Hacking the epigenome is no easy task. Each deactivated Cas9 (dCas9) system boasts its own nuances that must be teased apart before we can crack the histone code with its suite of effector domains. When it comes to histone acetylation, we’ve seen the histone acetyltransferase construct dCas9-p300, which writes H3K27ac to activate gene expression. However, […]
Tea Beats Coffee as a DNA Methylation Caffeine Fix in WomenJune 10, 2017There’s no denying that caffeine fuels epigenetic discovery, but now a recent epigenome-wide association study (EWAS) offers up a different epigenetic perspective about your daily caffeine fix. This creative rush comes at you from a European collaboration led by Uppsala University (Sweden). The team brewed up the first epigenome-wide association study (EWAS) of coffee and […]
The PARTICLE Accelerator of DNA and Histone Methylation CoordinationJune 8, 2017Finding the links between DNA methylation and histone modification is no easy chore. Long non-coding RNAs (lncRNAs) may be the answer; they are a huge part of the transcriptome, and many appear to be functional. There is growing evidence that lncRNAs act to “lnc” other epigenetic regulators together and coordinate their function. Adding to that […]
DNA Methylation is a Plus for Many Transcription FactorsJune 6, 2017When it comes to transcription factor binding, DNA methylation has a reputation as a trouble maker. When most people think of DNA methylation, they think of it blocking proteins from being able to bind. But does it deserve the bad rap? Though there are some examples of DNA methylation promoting binding of certain transcription factors […]
Drive the LINE: H4K20me3 Beats DNA Methylation at LINE-1 Chimeric Transcripts in Colorectal CancerApril 10, 2017The drivers of gene expression maintain a fragile balance that tends to cross the LINE in cancer. LINE-1s are transposable elements full of both mystery and regulatory potential. Within their 5’ untranslated region (UTR) lies a bidirectional promoter (L1-5’UTR) that consists of a sense promoter (L1-SP), which transcribes the element, and an antisense promoter (L1-ASP), which […]
Rapid m6A RNA Methylation Soothes Your Molecular SunburnsApril 10, 2017Now that has spring has sprung, many of us are quickly remembering not only how much we missed the sunshine, but also that we forgot to stock up on aloe vera to soothe that fresh sunburn. Attesting to the utility of a good spot treatment, the lab of Yang Shi at Harvard Medical School reveals […]
Genome Architecture of Single Cells May Shape Reprogramming to TotipotencyApril 5, 2017The soaring Eiffel Tower in Paris, the tumultuous Guggenheim in Bilbao, or the intricate genome structure of a single cell; which architectural marvel impresses you the most? For the labs of Leonid A. Mirny and Kikuë Tachibana-Konwalski, the latter looms above any such extravagant edifice, but the available analytical tools lacked the resolution required for […]
CLEVER Technique Maps the 5-Formylcytosine Landscape during DNA DemethyationMarch 31, 2017Mapping an undulating, dynamic, and partially hidden landscape represents a vexing problem to say the least, especially when the landmarks of interest are rare DNA demethylation by-products in a single cell! This is the task faced by those intrepid explorers hoping to map the genome-wide location of 5-formylcytosine (5fC), a fleetingly rare oxidized form of […]