Epigenetic Inheritance During DNA Replication: A State Lying Somewhere Between Symmetry and InstabilityOctober 2, 2023Emerging research has provided evidence for the critical importance of the inheritance of epigenetic states, whether that be DNA methylation, histone modifications, or even non-coding RNAs. Now, three recent studies focusing on the mechanism involved in passing down this information from parental to daughter cells while they replicate their DNA and divide in vitro provide […]
An Evolutionary and Epigenetic Tour-de-force Links DNA Methylation and Mammalian AgingSeptember 11, 2023Have you climbed Mount Everest? Recorded a critically acclaimed album?? Written the great American novel??? These life-affirming feats of body and mind pale into insignificance when compared to the evolutionary and epigenetic tour-de-force reported in two recent papers based on mammalian DNA methylation datasets of colossal size and importance. An expeditionary force led by Steve […]
“Dynamite” Study Uses TNT To Destroy Epigenetic Memories in Human iPSCsSeptember 11, 2023While lingering memories can represent unwelcome guests, destroying them with the power of dynamite may seem like overkill! However, a volatile new study now describes TNT or transient-naïve-treatment as a simple means of ridding human induced pluripotent stem cells (hiPSC) of their epigenetic memories and improving their therapeutic potential. An explosive epigenetic team headed by […]
Detecting Global Levels of 5mC and 5hmC at the Same Time—With ColorAugust 23, 2023Color is exciting and fun—just look at Andy Warhol’s striking silkscreen paintings of Marilyn Monroe. Now, a new method uses bright red and green fluorescence to detect global levels of both methylated and hydroxymethylated cytosine (5mCs and 5hmCs) modifications of genomic DNA in the same straightforward assay, which could lead to easy and inexpensive clinical […]
Bringing in “Young Blood” Persistently and Systemically Slows Epigenetic AgingAugust 22, 2023Be it a football team, a book club, or an epigenetics lab, bringing in “young blood” can seriously improve quality in the short term, but does this effect endure? Now, a heterochronic parabiosis study reveals that long-term exposure to young blood induces persistent slowing of DNA methylation-based epigenetic aging and extends healthy lifespans in mice! […]
DM-Seq: A DM You’ll Want to Slide Into for Direct Methylation Sequencing of CytosinesJuly 31, 2023When someone slides into your DMs, it could mean that they are interested in you. Now, there’s a whole new meaning of “DM” for epigeneticists. Direct Methylation Sequencing (DM-seq) nondestructively maps 5mCs directly at single-base resolution with enzymes, and only needs nanograms of sample. There are already lots of ways to get at 5mC, including: Kohli’s […]
Dnmt3bas Is Inactive Dnmt3b’s Nemesis, Keeping Its Levels Low via Transcription and SplicingJuly 10, 2023The main character of many movies has a memorable nemesis who can’t help but try to bring them down and get in their way. Now, it turns out that the nemesis of the inactive Dntm3b isoform may just be development’s best friend. Before differentiation, Dnmt3b transcript levels are kept low, but get a boost at differentiation. […]
DNA Methylation Alterations Highlight Drivers of Aggressive Metastatic TumorsJuly 3, 2023The identification and early detection of events driving the metastasis of primary tumors may help identify therapeutic targets and patients that respond to specific therapeutics. Now, an epigenetic study focused on the spread of colorectal cancer to the liver reports DNA methylation as the spark driving metastatic events. Roadworthy researchers led by Euan J. Rodger, […]
Single-Molecule Methylation Profiles of Cell-Free Cancer DNA—Without Playing GamesJune 14, 2023Sometimes, you have to jump through a lot of hoops to get what you want. Hanlee Ji’s lab (Stanford) must be tired of playing those games because they’ve developed a direct single-molecule methylation nanopore sequencing approach for cell-free DNA (cfDNA) that doesn’t involve bisulfite conversion or even PCR. And yet it works on nanogram or […]
Gene Topology or Gene Expression? NSD1 Chooses Both to Protect the BrainMay 23, 2023We have to make a lot of decisions in our lives, but sometimes when given two choices, going with both can be the right answer. For example, researchers working on neurodevelopment figured out two different phenomena that regulate non-CG methylation in the postnatal brain, but how are they connected? Now, Harrison Gabel’s lab (Washington University […]
