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A Synthetic Transcriptional Repressor That’s Anything but Plain

January 9, 2016

Synthetic gene circuits, just like electronic circuits, are built from parts that take an input, process it, and pass on an output. The toolbox of parts for gene circuits has long been limited to those found somewhere in nature, particularly when it comes to sensing an input. Typically, these systems repurpose a natural transcription factor that […]

tRNA Fragments Beat DNA Methylation in the Game of Paternal Intergenerational Epigenetic Inheritance

January 9, 2016

The fact that parental diet affects the metabolism of offspring goes to show that inheritance can be shaped by environmental factors. While early studies focused on mom’s contribution, we’re now starting to see the importance of paternal contribution for shaping an offspring’s epigenome. For the past 15 years, the lab of Oliver Rando at the […]

Gene Drives: Wormholes of Biology

January 8, 2016

Gene drives have been hitting the news quite a bit lately, generating a lot of hype, hope, and some hand-wringing. They are a relatively new concept, so it’s well worth a quick road trip into gene drive history, domestication, safety, and practical challenges. Gene Drives? In essence, gene drives are the wormholes of biology. They look […]

Human Pluripotent Stem Cells (hPSCs) Elevate Performance with Chimera Formation

January 8, 2016

Ask Usain Bolt, Yelena Isinbayeva, or Lindsey Vonn and they will tell you that Gold is the only thing that matters. To them, it came in the guise of an Olympic medal (or two), but human pluripotent stem cells (hPSCs) have been in the hunt for a slightly different type of gold to prove their […]

The Early Days of CRISPR with Dr. Blake Weidenheft

December 28, 2015

Interview with Dr. Blake Weidenheft at Keystone Symposia’s Precision Genome Engineering and Synthetic Biology: Designing Genomes and Pathways The Early Days of CRISPR I was one of the earlier people involved in the CRISPR– in CRISPR biology. And so we didn’t really come at this with the intent to try to develop some new genome […]

Retroviral lincRNA Regulates miRNA Pluripotency Switch

December 28, 2015

Everyone knows the old saying that “when life gives you lemons, make lemonade”, but what are you supposed to do when life gives you a genome full of retroviral ncRNAs? Nature seems to think it should evolve elaborate regulatory elements for your complex development. Two-thirds of the 10,000 long intergenic noncoding RNAs (lincRNA) found so […]

Going Direct: Reprogramming without iPSCs in Cell Therapies

December 21, 2015

The generation of induced pluripotent stem cells (iPSCs) represents one of the most important scientific breakthroughs of our times, bringing us to the brink of patient-specific stem cell-based therapies. The “simple” generation process involves the forced expression of transcription factor genes in differentiated cells taken from the patient (normally skin cells) to “kick-start” the pluripotency-associated […]

Stress Accelerates Epigenetic Ageing

December 18, 2015

The epigenetic clock has developed faster than the iWatch: it can predict biological age from select CpGs, which when compared with chronological age, gives a metric known as Δ-age. The greater the difference, the greater the acceleration of epigenetic age, which indicates variation in the rate of senescence between people. To understand this variation and […]

A TAD Closer to Understanding 3D Chromatin Structure

December 15, 2015

Interview with Dr. Jennifer Phillips-Cremins at Keystone Symposia’s Precision Genome Engineering and Synthetic Biology. My lab is really focused on understanding the epigenetic mechanisms that regulate early brain development. And the, sort of traditional way of studying epigenetic marks, is to zoom in and really focus on a particular modification at a precise location in […]

Directed Evolution in Synthetic Biology with Dr. Andrew Ellington

December 12, 2015

Interview with Dr. Andrew Ellington at Keystone Symposia’s Precision Genome Engineering and Synthetic Biology: Designing Genomes and Pathways Parts, Circuits, and Systems So in directed evolution, what you’re generally trying to do is to optimize function. And that can mean a lot of different things. But if we keep within the synthetic biology paradigm, we […]