Phages probably picked up DNA-cutting systems from microbial hosts, and might use them to fight other viruses.
Unnecessary playing with nature.
In January, Bennett’s doctors offered him the chance to receive a heart from a pig. He took it. “I know it’s a shot in the dark, but it’s my last choice,” he said in a press release from the University of Maryland Medical Center in Baltimore, where he was being treated. On 7 January, doctors transplanted the heart, which had been genetically modified so that the human body would tolerate it.
Bennett survived for eight weeks with his new heart before his body shut down. After his death, the research team learnt that the transplanted organ was infected with a pig herpesvirus that had not been detected by tests1.
Continue reading “Will pigs solve the organ crisis? The future of animal-to-human transplants” »
Evidence-Based And Actionable Health, Wellness And Longevity Solutions — Dr. Renee DeHaan, Ph.D. — VP, Science & AI, InsideTracker
Dr. Renée Deehan, Ph.D. is the VP of Science & Artificial Intelligence at InsideTracker (https://www.insidetracker.com/), and leads a science team that builds and mines the world’s largest data set of blood, DNA, fitness tracking and phenotypic data from healthy people, creating evidence-based solutions that are simple, clear, and actionable.
Circa 2021:3
Surgical management of breast cancer often results in the absence of the breast. However, existing breast reconstruction methods may not meet the need for a replacement tissue. Tissue engineering with the use of emerging materials offers the promise of generating appropriate replacements. Three-dimensional (3D) printing technology has seen a significantly increased interest and application in medically-related fields in the recent years. This has been especially true in complex medical situations particularly when abnormal or complicated anatomical surgical considerations or precise reconstructive procedures are contemplated. In addition, 3D bio-printing which combines cells with bio-material scaffolds offers an exciting technology with significant applications in the field of tissue engineering. The purpose of this manuscript was to review a number of studies in which 3D printing technology has been used in breast reconstructive surgical procedures, and future directions and applications of 3D bio-printing.
Breast cancer is the most common cancer diagnosed among US women and is second only to lung cancer as a cause of cancer death among women as of 2019. Because ~268,600 (almost six times than DCIS) new cases prove to be an invasive type of breast cancer (1), many women had to choose the removal of the breast, with immediate consideration for a replacement tissue. Although this was satisfactory in many patients, either saline or gel-filled breast implants (2) do carry real risks of complications such as infection, capsular contracture, implant dislocation, or deformities (3, 4). The option of autologous reconstruction can be more texturally natural aesthetically, but it requires a more complex procedure, significant time and expense, and possible muscle weakness or hernia formation at the tissue donor site (5). Tissue engineering intends to address these limitations by combining the 3D printing technology with synthetic or natural structural elements.
Continue reading “3D Printing in Breast Reconstruction: From Bench to Bed” »
Researchers believe that synthetic muscle fibers could be used in a wide variety of sustainable and environmentally friendly industrial applications, including textiles, biomedicine, and tissue engineering. In a world where it takes up to 1,800 gallons of water to produce a single pair of jeans, the development of such environmentally safe processes that provide high-strength materials for industrial applications is a great step forward.
How strong can a muscle ever get? Can it have more endurance than metal? Can it be sturdier than Kevlar? While you might be inclined to answer the above in the negative, please pause, for scientists have succeeded in developing synthetic muscle that’s stronger than Kevlar. How about that for a flex?
The science and other stuff to know
Continue reading “Scientists Created Synthetic Muscle That’s Stronger Than Kevlar” »
High-Risk, High-Payoff Bio-Research For National Security Challenges — Dr. David A. Markowitz, Ph.D., IARPA
Dr. David A. Markowitz, Ph.D. (https://www.markowitz.bio/) is a Program Manager at the Intelligence Advanced Research Projects Activity (IARPA — https://www.iarpa.gov/) which is an organization that invests in high-risk, high-payoff research programs to tackle some of the most difficult challenges of the agencies and disciplines in the U.S. Intelligence Community (IC).
b Department of Polymer Science and Engineering and Key Laboratory of High Performance Polymer Materials and Technology of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210,023, China.
c Institute of Chemical and Bioengineering, ETH Zurich, Vladimir Prelog Weg 1, 8093 Zurich, Switzerland.
Received 21st February 2019, Accepted 17th April 2019.
The fourth discussion of the NEW NOW program, “Transhumanism: Beyond the Human Frontier?”, took place on December 16.
Together with our guest experts, we tried to identify the latest technology that has either already become a reality or is currently in development, focusing on the ethical aspects of the consequences that ensue. We reflected on the question of whether the realization of transhumanist ideas is likely to entail a radical change in the ways people relate to one another. How far are we prepared to go in changing our bodies in order to attain these enhanced capacities? We will attempt to identify the “human frontier”, beyond which the era of posthumanism awaits.
Continue reading “NEW NOW. Transhumanism: beyond the human frontier?” »
A team of researchers from Purdue University claim to have discovered the “chemistry behind the origin of life” on Earth in simple droplets of water, and they’re using strikingly strong language to celebrate the findings.
Graham Cooks, chemistry professor at Purdue and lead author of a new paper published in the journal Proceedings of the National Academy of Sciences, called it a “dramatic discovery” and the “secret ingredient for building life” in a statement.
“This is essentially the chemistry behind the origin of life,” he added. “This is the first demonstration that primordial molecules, simple amino acids, spontaneously form peptides, the building blocks of life, in droplets of pure water.”
Bringing together concepts from electrical engineering and bioengineering tools, Technion and MIT scientists collaborated to produce cells engineered to compute sophisticated functions— biocomputers of sorts.
Graduate students and researchers from Technion—Israel Institute of Technology Professor Ramez Daniel’s Laboratory for Synthetic Biology & Bioelectronics worked together with Professor Ron Weiss from the Massachusetts Institute of Technology to create genetic “devices” designed to perform computations like artificial neural circuits. Their results were recently published in Nature Communications.
The genetic material was inserted into the bacterial cell in the form of a plasmid: a relatively short DNA molecule that remains separate from the bacteria’s “natural” genome. Plasmids also exist in nature, and serve various functions. The research group designed the plasmid’s genetic sequence to function as a simple computer, or more specifically, a simple artificial neural network. This was done by means of several genes on the plasmid regulating each other’s activation and deactivation according to outside stimuli.
