"Using self-organizing stem cells, researchers grew a small kidney in a dish, paving the way for better kidney disease treatments.
Professor Melissa Little, of University of Queensland’s Institute for Molecular Bioscience who led the study, says new treatments for kidney disease are urgently needed. “We need to improve outcomes for patients with this debilitating condition, which costs Australia $1.8 billion a year.” “One in three Australians is at risk of developing chronic kidney disease and the only therapies currently available are kidney transplant and dialysis,” Little explains. “Only one in four patients will receive a donated organ, and dialysis is an ongoing and restrictive treatment regime.” SELF-ORGANIZING CELLSThe team designed a protocol that prompts stem cells to form all the required cell types to “self-organize” into a mini kidney in a dish. ...."
by Gendrault, Yves, Madec, Morgan ; Wlotzko, Vincent ; Lallement, Christophe ; Haiech, Jacques
"Synthetic biology, or biological engineering, is a new science which may take advantage of the know-how of engineering science in order to build new in-vivo biological functions. The complete design process implies lots of modeling and simulation tasks. The design flow for this technology uses “digital” models at high level of abstraction as well as “analogue” ones at low level. Nevertheless, contrary to electronics, high-level digital descriptions are far away from low-level ones. In this paper, an intermediate modeling level using the principle of fuzzy logic is proposed to fill the gap between high and low abstraction level. The main advantage of this approach is to obtain quantitative simulation results while keeping a behavioral description of mechanisms. This is pointed out through two examples. The first one, encountered in literature, tends to prove that this modeling level is sufficient to obtain reliable results in comparison with the experimental ones. The second one, which is more theoretical, demonstrates the interest of fuzzy logic from a designing point of view."
An experimental exhibition at Dublin’s Science Gallery brings together artists, scientists and designers to investigate an emerging approach to genetic engineering known as ‘synthetic biology’.
Yale researchers have discovered a targeted way to make proteins not generally found in nature by expanding the information encrypted in the genetic code.
*"The startup world is beating academics at their own game.”*
BY SAMUEL ARBESMAN
"I noticed recently that books with the phrase “The Last Man Who Knew Everything” all share in common that their subjects lived during the period close to the Scientific Revolution, roughly between 1550 to 1700. (The examples I own are about Athanasius Kircher, a Jesuit priest born in 1602; Thomas Young, who studied topics such as optics and philology and was born in 1773; and Philadelphia area professor Joseph Leidy, who was born in 1823.) The Scientific Revolution killed our ability to Know Everything.It’s as if the Scientific Revolution — and the knowledge it spawned — killed the ability to Know Everything. Before then, it was not only possible to be a generalist or polymath (someone with a wide range of expertise) — but the weaving together of different disciplines was actually rather unexceptional. The Ancients discussed topics such as ethics, biology, and metaphysics alongside each other. The Babylonian Talmud discusses everything from astronomy and biology to morality and law, weaving them together into a single compendium. So what changed? Scientific knowledge exploded in size, mainly due to the application of the scientific method to our surroundings. As that knowledge base and its domain experts grew exponentially, we began classifying and ordering all that we understood — from the classification taxonomy of Carl Linnaeus to manuals for categorizing mental disease. We made sense of our world by dividing information into manageable portions and distinct areas of proficiency. But as people began to specialize, knowledge became fragmented. We chose to know more and more about less and less. We may have expanded what we as a society know — but it was at the price of no single individual being able to truly know it all...."
"Semiconductor Research Corporation (SRC), the world’s leading university-research consortium for semiconductor technologies, launched the Semiconductor Synthetic Biology (SSB) research program on hybrid bio-semiconductor systems to provide insights and opportunities for future information and communication technologies. The program will initially fund research at six universities: Massachusetts Institute of Technology, the Univ. of Massachusetts at Amherst, Yale, Georgia Tech, Brigham Young and the Univ. of Washington.
“University researchers welcome this academia-industry partnership to do long-term research” Funded by SRC’s Global Research Collaboration (GRC), SSB concentrates on synergies between synthetic biology and semiconductor technology that can foster exploratory, multi-disciplinary, longer-term university research leading to novel, breakthrough solutions for a wide range of industries. Results from the university research, guided by semiconductor industry needs, should significantly enhance and accelerate opportunities for advancing properties, design and applications for future generations of integrated circuits. “The role of the SSB program is to stimulate non-traditional thinking about the issues facing the semiconductor industry, and these forward-looking projects will aggressively explore new dimensions for pairing biological activities and semiconductors to benefit society,” said Dr. Steven Hillenius, executive director for SRC-GRC. “We intend to seek new collaborative initiatives with the National Science Foundation and other agencies as part of the SSB program with the goal of producing disruptive information technologies for the future.” The first stage of the new program will support six exploratory projects in three related, but distinct, areas: (1) Cytomorphic-Semiconductor Circuit Design that applies lessons from cell biology to new chip architectures and vice versa; (2) Bio-Electric Sensors, Actuators and Energy Sources dedicated to enabling hybrid semiconductor-biological systems; and (3) Molecular-precision Additive Fabrication that creates manufacturing processes at the few-nanometer scale that are inspired by biology. Results from this Stage 1 research program will be used to guide future generations of SSB research. Approximately $2.25M will be invested by SRC-GRC for Phase 1 research. “University researchers welcome this academia-industry partnership to do long-term research,” said Professor Rahul Sarpeshkar of MIT. “Living cells can offer ground-breaking solutions to some hard problems faced by the semiconductor industry because they solved similar problems more than a billion years ago. Controlled chemical reactions and molecular flows in cells are the ultimate miniaturization of electronics to the atomic and molecular scale.” Specific profiles of the three areas of research are: Cytomorphic-Semiconductor Circuit Design Designers for semiconductor circuits and systems have begun to look to biological sciences for new approaches to analog and digital design and to circuits and system architectures, especially for minimum-energy electronic systems. The term ‘cytomorphic electronics’ refers to electronic circuits and information processing inspired by the operation of chemical circuits and information processing in cells. Bioelectric Sensors, Actuators and Energy Sources Biological sensors have the potential to play an important role in multi-functional semiconductor systems. SRC plans to integrate live cells with CMOS technology and thus form a hybrid bio-semiconductor system that provides high signal sensitivity and specificity at low operating energy. Molecular-precision Additive Fabrication As the demands continue to grow for the most exacting pattern formation for semiconductor fabrication—and feature sizes shrink to the 5 nanometer (nm) regime—molecular-based self-assembly could offer an alternative to lithographically driven manufacturing. DNA can be used as an active agent to provide information content to guide structure formation. SRC plans to pursue processes that will both improve fabrication yields and provide purification of correctly formed structures to significantly reduce the occurrence of defects in making DNA nano structures."
On December 9-11, the eilslabs at DKFZ and BioQuant, as part of the coordination of the Helmholtz Initiative on Synthetic Biology is hosting the International Symposium "Synthetic Biology - from understanding to application" ...
"During her master's programme in genetics from 2005 to 2008, Sarah Hird dreaded going into the lab. She was studying subspecies of red-tailed chipmunks and had become discouraged and frustrated by the uncertainties of molecular-biology experiments."
by Lærke Münter Lassen , Agnieszka Zygadlo Nielsen , Bibi Ziersen , Thiyagarajan Gnanasekaran , Birger Lindberg Møller , and Poul Erik Jensen
"Photosynthesis in plants, green algae and cyanobacteria converts solar energy into chemical energy in the form of ATP and NADPH, both of which are used in primary metabolism. However, often more reducing power is generated by the photosystems than what is needed for primary metabolism. In this review we discuss the development in the research field focusing on how the photosystems can be used as synthetic biology building blocks to channel excess reducing power into light-driven production of alternative products. Plants synthesize a large number of high-value bioactive natural compounds. Some of the key enzymes catalyzing their biosynthesis are the cytochrome P450s situated in the endoplasmic reticulum. However, bioactive compounds are often synthesized in low quantities in the plants and are difficult to produce by chemical synthesis due to their often complex structures. Through a synthetic biology approach, enzymes with a requirement for reducing equivalents as cofactors, such as the cytochrome P450s, can be coupled directly to the photosynthetic energy output to obtain environmentally friendly production of complex chemical compounds. By relocating cytochrome P450s to the chloroplasts, reducing power can be diverted towards the reactions catalyzed by the cytochrome P450s. This provides a sustainable production method for high-value compounds that potentially can solve the problem of NADPH regeneration, which currently limits the biotechnological uses of cytochrome P450s. We describe the approaches that have been taken to couple enzymes to photosynthesis in vivo and to photosystem I in vitro and the challenges associated with this approach to develop new green production platforms."
"This paper transposes dominant normative critiques with an institutionalist view of patent law by analysing how the multi-institutional setup of the patent system may determine the quality and coherence of change and decision-making. The institutional environment of the patent system makes it opaque, sticky and complex. These significant features are examined for the first time in this paper. Critical opportunities for statutorily determined decision-making are best described as learning needs, expressed through heuristics such as the person skilled in the art, inventive step determinations and prior art. These learning needs, set against the broader institutional environment, severely constrain current goals and limit future decision-making possibilities. In the case of an emerging technology such as synthetic biology, the management of learning needs is likely to lead to decisional outcomes marked by a desire for short-term gains in certainty and homogeneity, rather than substantive goals."
by Madec, Morgan, Pecheux, Francois ; Gendrault, Yves ; Bauer, Loic, Haiech, Jacques ; Lallement, Christophe
"The topic of this paper is to develop an open-source framework to help bio-engineers through the different stages of a top-down design process for new artificial biosystems (synthetic biology). The presented tools address the upstream stages of the design, starting from a high-level behavioral description of the targeted biological function and ending with a working assembly of abstract BioBricks performing that very function. For that purpose, EDA (Electronic Design Automation) tools are indeed adapted to synthetic biology. The framework involves three main steps: the interpretation of the high-level description into a netlist of logical functions, the optimization of the netlist with respect to BioBricks capabilities and the automated generation of a SystemC-AMS abstracted simulatable netlist that can be used for further analysis (low-level simulation, optimization …). Throughout the paper, each stage of the framework is detailed and illustrated with a simple (from a logical point of view) but complex (from the biological viewpoint) example: an in-vivo chemical species regulation system."
Researchers demonstrate a strategy for the fabrication of memristive nanodevices with stable and tunable performance by assembling ferritin monolayer inside a on-wire lithography-generated 12 nm gap.
A synthetic biology approach for evaluating the functional contribution of designer cellulosome components to deconstruction of cellulosic substrates - up-to-the-minute news and headlines.
Synthetic genomic approaches offer unique opportunities to use powerful yeast and Escherichia coli genetic systems to assemble and modify chromosome-sized molecules before returning the modified DNA to the target host.
The hype began with the way hype often begins: an institutional news release offering us the holy grail/huge breakthrough/game-changing finding of the day.
*"Scientists have discovered a second code hiding within DNA"*
*Exonic Transcription Factor Binding Directs Codon Choice and Affects Protein Evolution*
Andrew B. Stergachis, Eric Haugen, Anthony Shafer, Wenqing Fu, Benjamin Vernot, Alex Reynolds, Anthony Raubitschek, Steven Ziegler, Emily M. LeProust, Joshua M. Akey
"Genomes contain both a genetic code specifying amino acids and a regulatory code specifying transcription factor (TF) recognition sequences. We used genomic deoxyribonuclease I footprinting to map nucleotide resolution TF occupancy across the human exome in 81 diverse cell types. We found that ~15% of human codons are dual-use codons (“duons”) that simultaneously specify both amino acids and TF recognition sites. Duons are highly conserved and have shaped protein evolution, and TF-imposed constraint appears to be a major driver of codon usage bias. Conversely, the regulatory code has been selectively depleted of TFs that recognize stop codons. More than 17% of single-nucleotide variants within duons directly alter TF binding. Pervasive dual encoding of amino acid and regulatory information appears to be a fundamental feature of genome evolution."
"Despite redundancy in the genetic code (1), the choice of codons used is highly biased in some proteins, suggesting that additional constraints operate in certain protein-coding regions of the genome. This suggests that the preference for particular codons, and therefore amino acids in specific regions of the protein, is often determined by factors unrelated to protein structure or function (2, 3). On page 1367 in this issue, Stergachis et al. (4) reveal that transcription factors bind within protein-coding regions (in addition to nearby noncoding regions) in a large number of human genes. Thus, a transcription factor “binding code” may influence codon choice and, consequently, protein evolution. This “binding” code joins other “regulatory” codes that govern chromatin organization (3), enhancers (5, 6), mRNA structure (7), mRNA splicing (3), microRNA target sites (6, 8), translational efficiency (9), and cotranslational folding (10), all of which have been proposed to constrain codon choice, and thus protein evolution."
*Scientists discover double meaning in genetic code*
by Anonymous
"Scientists have discovered a second code hiding within DNA. This second code contains information that changes how scientists read the instructions contained in DNA and interpret mutations to make sense of health and disease.
Genome scientist Dr. John Stamatoyannopoulos.Genome scientist Dr. John Stamatoyannopoulos led a team that discovered a second code hidden in DNA.A research team led by Dr. John Stamatoyannopoulos, University of Washington associate professor of genome sciences and of medicine, made the discovery. The findings are reported in the Dec. 13 issue of Science. Read the research paper. Also see commentary in Science, “The Hidden Codes that Shape Protein Evolution.” The work is part of the Encyclopedia of DNA Elements Project, also known as ENCODE. The National Human Genome Research Institute funded the multi-year, international effort. ENCODE aims to discover where and how the directions for biological functions are stored in the human genome. Since the genetic code was deciphered in the 1960s, scientists have assumed that it was used exclusively to write information about proteins. UW scientists were stunned to discover that genomes use the genetic code to write two separate languages. One describes how proteins are made, and the other instructs the cell on how genes are controlled. One language is written on top of the other, which is why the second language remained hidden for so long. “For over 40 years we have assumed that DNA changes affecting the genetic code solely impact how proteins are made,” said Stamatoyannopoulos. “Now we know that this basic assumption about reading the human genome missed half of the picture. These new findings highlight that DNA is an incredibly powerful information storage device, which nature has fully exploited in unexpected ways.” The genetic code uses a 64-letter alphabet called codons. The UW team discovered that some codons, which they called duons, can have two meanings, one related to protein sequence, and one related to gene control. These two meanings seem to have evolved in concert with each other. The gene control instructions appear to help stabilize certain beneficial features of proteins and how they are made. The discovery of duons has major implications for how scientists and physicians interpret a patient’s genome and will open new doors to the diagnosis and treatment of disease. “The fact that the genetic code can simultaneously write two kinds of information means that many DNA changes that appear to alter protein sequences may actually cause disease by disrupting gene control programs or even both mechanisms simultaneously,” said Stamatoyannopoulos. Grants from the National Institutes of Health U54HG004592, U54HG007010, and UO1E51156 and National Institute of Diabetes and Digestive and Kidney Diseases FDK095678A funded the research. In addition to Stamatoyannopoulos, the research team included Andrew B. Stergachis, Eric Haugen, Anthony Shafer, Wenqing Fu, Benjamin Vernot, Alex Reynolds, and Joshua M. Akey, all from the UW Department of Genome Sciences, Anthony Raubitschek of the UW Department of Immunology and Benaroya Research Institute, Steven Ziegler of Benaroya Research Institute, and Emily M. LeProust, formerly of Agilent Technologists and now with Twist Bioscience." http://bit.ly/1kJpoBF
Methods for engineering biology. Nina DiPrimio discusses tools for design and construction and plans for future projects. Presented by Counter Culture Labs, ...
"Elaborate competitions to build the best robot or design cages to protect falling eggs have been a rite of passage for generations of engineering students. Today, there’s a new contest with the same creativity and competitive spirit, but vastly more sophisticated projects—like mixing-and-matching bits of DNA to create new microorganisms that produce biofuels or costly medicines.
The International Genetically Engineered Machines (iGEM) competition challenges student teams to use cutting-edge tools from the new field of synthetic biology to design, build, and test genetically engineered organisms. This fall, 133 teams of students from universities from around the world participated, producing an incredible array of projects. Some engineered microorganisms to produce medicines, clean up environmental contaminants, or act as biosensors for toxins or other chemicals. Others created genetically engineered living board games or transformed otherwise stinky bacteria to smell like wintergreen. Our own Duke University iGEM team focused on engineering gene circuits in yeast to better understand how cells make decisions, such as whether to replicate or respond to an environmental stimulus; the circuits can also be used in biomanufacturing. If these examples surprise you, you’re not alone. As the New York Times observed, “iGEM has been grooming an entire generation of the world’s brightest scientific minds to embrace synthetic biology’s vision — without anyone really noticing, before the public debates and regulations that typically place checks on such risky and ethically controversial new technologies have even started.” But we think this kind of hands-on experimentation and experience is precisely the way to prepare the next generation of leaders who can help society reap the benefits and manage the risks of synthetic biology—and other fields, for that matter. At a time when the discussion of the future of college education is largely focused on online teaching and massive open online courses (MOOCs), it is critical to recognize the importance of hands-on education that can only be provided in a dynamic research environment. As Matt Baron, a biomedical engineering student and member of the Duke iGEM team, says: “If I had simply studied synthetic biology but not participated in the iGEM competition, I would not appreciate the practical implementation of the theoretical concepts—or how synthetic biology can be used to solve complex problems across seemingly unrelated fields such as medicine, agriculture, manufacturing and computing. More importantly, I would have lost the opportunity to take ownership over a project along with my team members.” By encouraging freedom and independence in project design and exposing students to a new and exciting field as it is developing, the iGEM competition provides a quality of education that clearly cannot be replicated through online teaching, but is critical in educating the next generation of scientists and engineers. The iGEM competition also teaches participants the importance of considering broader implications of advances in synthetic biology, such as the safety and security of the engineered systems and ethical issues concerning genetic manipulation. All projects are supervised by university faculty mentors, and the iGEM competition stresses environmental and societal responsibility as primary judging criteria. Our iGEM team worked with Duke faculty in the Schools of Law and Public Policy to develop a report on intellectual property and synthetic biology, addressing concerns involving patenting of gene sequences and subsequent effects on basic research and the biotechnology industry. These students are not just learning science and engineering—they’re being trained in aspects of philosophy, policy and business. But synthetic biology is not just an academic exercise. The number of synthetic biology companies has tripled over the last four years, from 61 to 192. The global synthetic biology market was estimated to be worth $2.1 billion in 2012 and is expected to expand to $16.7 billion by 2018. At this rate, the development of this nascent field is rapidly outpacing the release of new textbooks or other conventional educational models—whereas the iGEM competition adapts at the speed of student creativity, providing a new model for training that’s already proving its worth. Many successful iGEM projects have been published in peer-reviewed scientific journals, and several iGEM teams have even patented their inventions, creating opportunities to complement their science and engineering training with entrepreneurship experiences. Educational paradigms must evolve to train the next generation of scientists and engineers, going beyond cultivating creativity and inventiveness to developing social consciousness and the mindset to face the grand challenges for the 21st century. The iGEM competition provides an excellent blueprint for how to achieve these goals by involving students not only in finding the right answers, but asking the right questions."
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Professor Melissa Little, of University of Queensland’s Institute for Molecular Bioscience who led the study, says new treatments for kidney disease are urgently needed. “We need to improve outcomes for patients with this debilitating condition, which costs Australia $1.8 billion a year.” “One in three Australians is at risk of developing chronic kidney disease and the only therapies currently available are kidney transplant and dialysis,” Little explains. “Only one in four patients will receive a donated organ, and dialysis is an ongoing and restrictive treatment regime.” SELF-ORGANIZING CELLSThe team designed a protocol that prompts stem cells to form all the required cell types to “self-organize” into a mini kidney in a dish. ...."Bronwyn Adams-Queensland
"Using self-organizing stem cells, researchers grew a small kidney in a dish, paving the way for better kidney disease treatments.
http://bit.ly/18znhjJ