DNA Methylation Keeps iPS Cells Living in the PastApril 19, 2011Some people are convinced that they’ve lived a past life, recalling snippets of someone else’s memories from a different time and place. Now, without the benefit of hypnosis, researchers have discovered that induced pluripotent stem (iPS) cells also retain transcriptional memories of past lives as somatic cells, which can be at least partially explained by […]
Embryonic Stem Cells and their 5hmC Highwire Balancing ActApril 5, 2011With new tools and techniques to study the sixth base, 5-hydroxymethylcytosine (5-hmC), reports starting to pour in to shed new light on just what the heck it does. Now researchers in the UK have shown that changes in the relative levels of 5mC and 5hmC in embryonic stem (ES) cells could help tip cells toward […]
Turning Back the Clock: Epigenetics, iPSCs and AgingFebruary 25, 2011Aging can be a real downer, but for some individuals premature aging is a lot more serious than a few aches and pains the morning after some touch football. Hutchinson-Gilford progeria syndrome (HGPS) is a rare and fatal genetic disorder where the victims speed through aging. It is caused by a point mutation in the […]
MethylC-Seq Delivers First Single Base Resolution Methylation Profiles of iPSCsFebruary 2, 2011There’s always something a bit “off” when you look at aging starlets who’ve had some work done. In the same way, researchers in California and Wisconsin recently found that induced pluripotent stem cells (iPSCs) generated from old somatic cells aren’t quite the same as youthful embryonic stem cells (ESCs)—the epigenetics are “off”. Sure, iPSCs and […]
Ta-da! Blood Cells Transform into iPSCsJanuary 20, 2011Turning a cell into an induced pluripotent stem cell (iPSC) is tricky. It turns out that blood cells have an edge—they already epigenetically resemble iPSCs. When U.S. and Chinese researchers poked around the DNA of human CD34+ cells from umbilical cord blood and adult blood, they found that the promoters’ methylation patterns looked a heck […]
Stem Cells Can’t Hold Their LiquorJanuary 17, 2011Growing up, you always hear that drinking alcohol kills brain cells. According to a new report (not to mention a slow recovery from the EpiGenie New Year’s Eve Bash) there’s definitely some truth to that old adage. Researchers at Indiana University looked at alcohol’s effect on neural stem cells (NSCs) during development by running NSC […]
ncRNA: 2010 2nd Half Editor’s FavoritesJanuary 6, 20112010 is over, so we’ve decided to take a look back at some of the exciting non-coding RNA work that came out over the last half of the year on topics like iPS cells, miRNA sponges, cancer and biomarkers. Enjoy! miRNAs in iPS cells An important tool for stem cell research, induced pluripotent stem cells […]
DNA Methylation: 2010 2nd Half Editor’s FavoritesJanuary 6, 2011DNA methylation was heating up in the second half of 2010 in hot pursuit of determining roles for 5-hydroxymethylcytosine, creating bisufite alternatives and uncovering DNAm’s role in disease. Have a look at some of our favorite articles from the last six months: 5-hmC and Stem Cells Anytime you put together a new biological role for […]
miR-200a Takes Down Cancerous Stem-like TransitionDecember 15, 2010There’s been a deafening buzz lately surrounding a new focus of epigeneticists known as the epithelial-mesenchymal transition (EMT). EMT, the gateway between normal epithelial cells and those that gain mesenchymal properties, is thought to be the point where cancer metastasis kicks off. And now a University of Hong Kong team, led by Hongping Xia reports […]
miR-23a,27a,24-2 Cluster is Bad to the BoneNovember 19, 2010We’re not calling the miRNA 23a,27a,24-2 cluster a bunch of biological bad-guys, but if you’re a progenitor cell hoping to one day become an osteoblast, then they aren’t exactly your best friends. A new study reveals that the miRNA 23a,27a,24-2 cluster is at the center of a regulatory network that controls osteoblast differentiation. The new […]