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DNMT1 Loss is Lethal in Human But Not Mouse Embryonic Stem Cells

April 2, 2015

Mouse models have been great to science, they’ve given insight into humans in ways simply not possible in humans. However, while there are striking similarities in the epigenetics of mice and men, there are also undoubtedly some fundamental differences. Now, a team from the Broad Institute of MIT and Harvard consisting of the labs of Alexander Meissner, J. Keith Joung, and John […]

Boosting CRISPR’s Editing Effectiveness

March 31, 2015

Unless you’ve been hiding under a rock you’ll know that CRISPR-Cas has been in the forefront of precise genome editing since its discovery in 1987 by Atsuo Nakata. However, as a technique it is not without shortcomings; while it has achieved a great deal of efficiency in the non-homologous end-joining (NHEJ) pathway, its ability to achieve […]

Cas9: The Ultimate Gene Driving Machine

March 30, 2015

Add one more to all the amazing things CRISPR can do: it is also the ultimate driving machine. Provided, of course, that you are a gene, and that your destination is any chromosome where you do not currently reside. Gene Drives Spread by Overwriting Alleles A gene drive is when a gene on one chromosome […]

New Rising STARs of Transcriptional Activation

March 9, 2015

If you can pronounce CRISPR, you know RNA-mediated gene control has been a rising star in synthetic biology. In principle, RNA regulation allows gene circuits to have many more independent control switches than traditional protein transcription factors. CRISPR has turned out to be a great system for RNA-guided gene repression, but it hasn’t been as […]

Webinar: An Engineered Synergistic CRISPR/Cas9 Activator Complex for Genome-wide Transcriptional Control

March 4, 2015

Presenter: Silvana Konermann, Graduate Student in Dr Feng Zhang’s Lab at Massachusetts Institute of Technology Systematic interrogation of gene function requires the ability to perturb gene expression in a robust and generalizable manner. The ease and scalability of the CRISPR-Cas9 system potentially enables systematic, genome-scale perturbation, but the magnitude of transcriptional up-regulation achieved by the first generation of Cas9 transcriptional […]

Express Yourself with Light-activatable CRISPR-Cas9

February 26, 2015

Guess what? It seems that blue light has a lot more to offer than just helping with your winter time blues. It could also be just what your transcriptional activation system needs. Synthetic biology has a lot to offer omics beyond genome editing and recent work from multiple groups is putting Cas9 in a different spotlight. CRISPR/Cas9 […]

New Transcriptional Repressors for Pick ‘N’ Mix Synthetic Gene Circuits

February 15, 2015

As a kid there was no greater feeling on a weekend shopping trip than being set loose on the Pick ‘N’ Mix, carefully choosing from the wealth of candy to create the perfect selection. Lucky for you synthetic biology promises the same thrill, by providing a selection of ready-to-roll interchangeable parts to choose from allowing […]

Plant Receptor Re-engineered to Hear “Drought!” From a New Signal

February 12, 2015

Don’t get me wrong, plants have a lot of things going for them. However, as Groot’s fellow Galaxy Guardians can attest, vocabulary isn’t one of them. It can be hard to communicate with plants, even once you figure out their language. Take the plant abscisic acid (ABA) receptor, PYR1, for example. PYR1 communicates via ABA, […]

Turn on Your Genes with a Helping Hand from CRISPR-Cas9

February 10, 2015

We all know that the genome editing superhero CRISPR-Cas9 is a master of modifying the genome, but a recent paper from Zhang lab shows that it is more than just a one-trick pony. This latest research boosts the previously developed CRISPR-Cas9 transcriptional activators both in terms of the level of gene induction and in the […]

Cell Organelles Trip the Light Fantastic with Optogenetics

February 10, 2015

The future is looking bright for optogenetics – a technique which uses light to control cellular processes. Following on from a previous illuminating study covered here at Epigenie (Shedding Light on Stem Cell Therapy for Parkinson’s with Optogenetics), another group of researchers have utilized optogenetics in a novel manner – the light-mediated control of sub-cellular […]