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Oct 20, 2019

Tennessee researchers join call for responsible development of synthetic biology

Posted by in categories: bioengineering, biotech/medical, food, genetics, policy

Engineering biology is already transforming technology and science, and a consortium of researchers across many disciplines in the international Genome Project-write is calling for more discussion among scientists, policy makers and the general public to shepherd future development. In a policy forum article published in the October 18 issue of Science, the authors outline the technological advances needed to secure the transformative future of synthetic biology and express their concerns that the implementation of the relatively new discipline remains safe and responsible.

Two researchers with the University of Tennessee Institute of Agriculture are co-authors on the piece titled “Technological challenges and milestones for writing genomes: requires improved technologies.” Neal Stewart and Scott Lenaghan with the UTIA departments of Plant Sciences and Food Science, respectively, join Nili Ostrov, a Ph.D. research fellow in genetics at Harvard Medical School, and 18 other leading scientists from a number of institutions and disciplines, in outlining a potential timeline for the development of what they call transformative advances to and society.

Stewart and Lenaghan are the co-directors of the UT Center for Agricultural Synthetic Biology (CASB). Formed in 2018, Stewart says CASB is the first synthetic center in the world aimed specifically at improved agriculture. A professor of plant sciences in the UT Herbert College of Agriculture, Stewart also holds the endowed Racheff Chair of Excellence in Plant Molecular Genetics. Lenaghan is an assistant professor in the Department of Food Science who also holds an adjunct position in the UT Mechanical, Aerospace, and Biomedical Engineering (MABE) Department.

Oct 20, 2019

Hacking Darwin: How the coming genetics revolution will play out

Posted by in categories: biological, genetics

Humanity is poised to take a huge leap forward, as a convergence of next-gen technologies combine to give us unprecedented power over our own biology. Here’s a roadmap to the key technologies and how it’s going to play out in the coming decades.

Oct 19, 2019

Quantum Paradox Experiment May Lead to More Accurate Clocks and Sensors

Posted by in categories: particle physics, quantum physics

More accurate clocks and sensors may result from a recently proposed experiment, linking an Einstein-devised paradox to quantum mechanics. University of Queensland physicist Dr Magdalena Zych said the international collaboration aimed to test Einstein’s twin paradox using quantum particles in a ‘superposition’ state.

Oct 19, 2019

Experience augmented reality like never before with the Microsoft Hololens2

Posted by in category: augmented reality

https://www.microsoft.com/en-us/hololens/hardware ~via Microsoft #churchofperpetuallife #perpetuallife #microsoft See More.

Oct 19, 2019

Army bio-inspired theoretical research may make robots more effective on the future battlefield

Posted by in categories: military, particle physics, robotics/AI

In an effort to make robots more effective and versatile teammates for Soldiers in combat, Army researchers are on a mission to understand the value of the molecular living functionality of muscle, and the fundamental mechanics that would need to be replicated in order to artificially achieve the capabilities arising from the proteins responsible for muscle contraction.

Bionanomotors, like myosins that move along actin networks, are responsible for most methods of motion in all life forms. Thus, the development of artificial nanomotors could be game-changing in the field of robotics research.

Researchers from the U.S. Army Combat Capabilities Development Command’s Army Research Laboratory have been looking to identify a design that would allow the artificial nanomotor to take advantage of Brownian motion, the property of particles to agitatedly move simply because they are warm.

Oct 19, 2019

The universe might be full of Earth-like exoplanets, study suggests

Posted by in categories: chemistry, space

Earth-like exoplanets may be quite common in the universe, a new UCLA study suggests.

Scientists led by Alexandra Doyle, a University of California, Los Angeles (UCLA) graduate student of geochemistry and astrochemistry, came up with a new method to analyze the geochemistry of planets outside our solar system for the study, which was published in the journal Science this week.

“We have just raised the probability that many rocky planets are like the Earth and there’s a very large number of rocky planets in the universe,” co-author Edward Young, UCLA professor of geochemistry and cosmochemistry, said in a statement.

Oct 19, 2019

Downregulation of the inflammatory network in senescent fibroblasts and aging tissues of the long‐lived and cancer‐resistant subterranean wild rodent, Spalax

Posted by in categories: biotech/medical, life extension, neuroscience

The blind mole rat (Spalax) is a wild, long‐lived rodent that has evolved mechanisms to tolerate hypoxia and resist cancer. Previously, we demonstrated high DNA repair capacity and low DNA damage in Spalax fibroblasts following genotoxic stress compared with rats. Since the acquisition of senescence‐associated secretory phenotype (SASP) is a consequence of persistent DNA damage, we investigated whether cellular senescence in Spalax is accompanied by an inflammatory response. Spalax fibroblasts undergo replicative senescence (RS) and etoposide‐induced senescence (EIS), evidenced by an increased activity of senescence‐associated beta‐galactosidase (SA‐β‐Gal), growth arrest, and overexpression of p21, p16, and p53 mRNAs. Yet, unlike mouse and human fibroblasts, RS and EIS Spalax cells showed undetectable or decreased expression of the well‐known SASP factors: interleukin‐6 (IL6), IL8, IL1α, growth‐related oncogene alpha (GROα), SerpinB2, and intercellular adhesion molecule (ICAM‐1). Apparently, due to the efficient DNA repair in Spalax, senescent cells did not accumulate the DNA damage necessary for SASP activation. Conversely, Spalax can maintain DNA integrity during replicative or moderate genotoxic stress and limit pro‐inflammatory secretion. However, exposure to the conditioned medium of breast cancer cells MDA‐MB‐231 resulted in an increase in DNA damage, activation of the nuclear factor κB (NF‐κB) through nuclear translocation, and expression of inflammatory mediators in RS Spalax cells. Evaluation of SASP in aging Spalax brain and intestine confirmed downregulation of inflammatory‐related genes. These findings suggest a natural mechanism for alleviating the inflammatory response during cellular senescence and aging in Spalax, which can prevent age‐related chronic inflammation supporting healthy aging and longevity.

Oct 19, 2019

Mice with hyper-long telomeres show less metabolic aging and longer lifespans

Posted by in categories: biotech/medical, genetics, life extension

Short telomeres trigger age-related pathologies and shorter lifespans in mice and humans. In the past, we generated mouse embryonic (ES) cells with longer telomeres than normal (hyper-long telomeres) in the absence of genetic manipulations, which contributed to all mouse tissues. To address whether hyper-long telomeres have deleterious effects, we generated mice in which 100% of their cells are derived from hyper-long telomere ES cells. We observe that these mice have longer telomeres and less DNA damage with aging. Hyper-long telomere mice are lean and show low cholesterol and LDL levels, as well as improved glucose and insulin tolerance. Hyper-long telomere mice also have less incidence of cancer and an increased longevity. These findings demonstrate that longer telomeres than normal in a given species are not deleterious but instead, show beneficial effects.

Oct 19, 2019

Surprise Black Hole Discovery Could Explain How They Grew So Enormous in The Early Universe

Posted by in categories: cosmology, materials

In recent years, cosmologists peering back to the very dawn of our Universe have discovered something peculiar. A whole bunch of supermassive black holes — in a time thought way too early for such massive objects to have formed.

Exactly how they got to be so freaking huge so quickly is a heck of a puzzle — but a new surprise discovery might have delivered an answer. The disc of dust and gas around a supermassive black hole is moving in such a way that it’s slurping down material faster than it would normally.

That means it’s gaining mass faster than expected — which in turn could explain what happened in the earliest days of our Universe.

Oct 19, 2019

Chains of atoms move at lightning speed inside metals

Posted by in categories: particle physics, space

A phenomenon that has previously been seen when researchers simulate the properties of planet cores at extreme pressures has now also been observed in pure titanium at atmospheric pressure. Chains of atoms dash around at lightning speeds inside the solid material.

“The phenomenon we have discovered changes the way we think about mass transport in metals. It explains properties of metals that we have, until now, not been able to understand. It’s too early to say what this means in practical terms, but the more we know about how materials function in different conditions, the better possibilities we have to develop materials with new or improved properties,” says Davide Sangiovanni, researcher in the Division of Theoretical Physics at LIU and principal author of an article that has been published in Physical Review Letters.