A DNA robot that can walk across biological cell membranes is the first one that can control living cells’ behaviour. The researchers who made the robot hope that it could improve cell-based precision medicine.
A team led by Hong-Hui Wang and Zhou Nie from Hunan University, China, has created a synthetic molecular robot that walks along the outer membrane of biological cells. The robot, powered by an enzyme’s catalytic activity, traverses across receptors that act as stepping stones on the cell surface. With each step, the robot activates a signal pathway that regulates cell migration. Driven by the robot’s movement, the cells can reach speeds of 24 μm/hour.
The researchers write that the DNA robot offers, for the first time, an opportunity to accurately and predictably control the nanoscale operations that power a live cell. They suggest that similar molecular machines that guide cell behaviours could play a role in cell-based therapies and regenerative medicine.
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Levine’s Biological age calculator is embedded as an Excel file in this link: Quantifying Biological Age
Papers referenced in the video: The baseline levels and risk factors for high-sensitive C-reactive protein in Chinese healthy population. https://immunityageing.biomedcentral.com/articles/10.1186/s12979-018-0126-7
Commonly used clinical chemistry tests as mortality predictors: Results from two large cohort studies. https://pubmed.ncbi.nlm.nih.gov/33152050/
All things must die, according to the poet Alfred Lord Tennyson, but that could be about to change.
A growing number of tech billionaires have decided they want to use their enormous wealth to try to help humans “cheat death.”
Amazon’s Jeff Bezos, Alphabet’s Larry Page, Oracle’s Larry Ellison and Palantir’s Peter Thiel are just a few of the super-rich who have taken a keen interest in the fast-emerging field of longevity, according to interviews, books and media reports.
A deepening understanding of the brain has created unprecedented opportunities to alleviate the challenges posed by disability. Scientists and engineers are taking design cues from biology itself to create revolutionary technologies that restore the function of bodies affected by injury, aging, or disease — from prosthetic limbs that effortlessly navigate tricky terrain to digital nervous systems that move the body after a spinal cord injury.
With the establishment of the new K. Lisa Yang Center for Bionics, MIT is pushing forward the development and deployment of enabling technologies that communicate directly with the nervous system to mitigate a broad range of disabilities. The center’s scientists, clinicians, and engineers will work together to create, test, and disseminate bionic technologies that integrate with both the body and mind.
Is an academic doctor and medical technology entrepreneur, working in the field of the computational biology of aging.
Dr. Radenkovic is also a Partner at the SALT Bio-Fund, and a co-founder of Hooke, an elite longevity research clinic in London.
Dr. Radenkovic has a dual degree in medicine and physiology from University College London Medical School, and did her residency at St Thomas’ Hospital in London. She later worked as Research Fellow at King’s College London and at Harvard University.
Dr. Radenkovic has led a variety of projects, including a digital therapeutics company for women and an algorithm for cardiac MRI based on fractal geometry, to major industry acquisitions.
Dr. Radenkovic has over 30 academic papers, 7 grants, and over 40 scientific conference presentations. She is fluent in 5 languages and 3 programming languages.
Red blood cells are the most abundant cell type in blood, carrying oxygen throughout the human body. In blood circulation, they repetitively encounter various levels of oxygen tension. Hypoxia, a low oxygen tension condition, is a very common micro-environmental factor in physiological processes of blood circulation and various pathological processes such as cancer, chronic inflammation, heart attacks and stroke. In addition, an interplay between poor cellular deformability and impaired oxygen delivery is found in various pathological processes such as sickle cell disease. Sickle red blood cells simultaneously undergo drastic mechanical deformation during the sickling and unsickling process.
The interactions between hypoxia and cell biomechanics and the underlying biochemical mechanisms of the accelerated damage in diseased red blood cells are well understood, however, the exact biomechanical consequences of hypoxia contributing to red blood cell degradation (aging) remains elusive.
Researchers from Florida Atlantic University’s College of Engineering and Computer Science, in collaboration with the Massachusetts Institute of Technology (MIT), sought to identify the role of hypoxia on red blood cell aging via the biomechanical pathways. In particular, they examined hypoxia-induced impairment of red blood cell deformability at the single cell level, compared the differences between non-cyclic hypoxia and cyclic hypoxia, and documented any cumulative effect vs. hypoxia cycles, such as aspects that have not been studied quantitatively. Red blood cell deformability is an important biomarker of its functionality.
Yes he starts with his personal controversy, emerging challenges, TAME, longevity is moving along well but has a long way to go.
Dr. Aubrey de Grey discusses the changing priorities at the forefront of the field of longevity rejuvenation research at Lifespan.io’s 2021 EARD conference. “The crusade is accelerating”, says Dr. De Grey, “but there’s so much still to do.” De Grey is the author of The Mitochondrial Free Radical Theory of Aging (1999) and co-author of Ending Aging (2007). He is an international adjunct professor of the Moscow Institute of Physics and Technology, a fellow of the Gerontological Society of America, the American Aging Association, and the Institute for Ethics and Emerging Technologies.
SENS Research Foundation works to develop, promote, and ensure widespread access to therapies that cure and prevent the diseases and disabilities of aging by comprehensively repairing the damage that builds up in our bodies over time.
The annual Ending Age-Related Diseases (EARD) conference by Lifespan.io brings together longevity thought leaders together to exchange research reports, inspire and get inspired with new ideas, find collaborators, supporters, and mentors.
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SCRIPT SAMPLE ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ It’s great to be here, of course. I just thought I’d start by saying that some of you may have heard perhaps of a complication that’s going on in my life right now. I just wanted to say that there is an independent investigation, which was started at the beginning of July and is still ongoing. That, of course, means a couple of things.
First of all, it means that I am on administrative leave, which means that I am not representing SENS Research Foundation here today; officially, I am here in a personal capacity. I should mention that I just noticed I have the SENS Research Foundation logo at the bottom of all my slides, so please pretend that that isn’t there.
Apart from that, I can’t say anything more at all about what’s going on; of course, this would be the wrong place anyway. I just want to say how overwhelmed I am for all the love and support that I’ve received from hundreds and hundreds of people, and it shouldn’t be long now. So you know, watch this space. So, having said all that, let me share my screen.
This is the video of Harold Katcher’s presentation to the London Futurists. It was a great discussion, be sure to check it out.
#haroldkatcher #antiaging #rejuvenation #futurism
It has been known for some time that young blood plasma can confer beneficial effects on various organs in mice, although the mechanisms and implications remained unclear. A recent breakthrough experiment is attracting more attention to this area of research: rats treated with a blood plasma mixture known as E5 subsequently had their effective biological age measured by epigenetic clocks, involving 593 tissue samples. The result was a halving of the epigenetic ages of blood, heart, and liver tissue, and a lesser reduction (still statistically significant) in the epigenetic age of the hypothalamus. This has been heralded as the single most dramatic age-reversal experiment in mammals to date.
On Saturday 18th September, the lead designer of these experiments, Dr Harold Katcher, joined London Futurists to present his analysis of the findings, his own distinctive theories of aging, and his expectation for future research and applications. He also answered questions about his new book, “The Illusion of Knowledge: The paradigm shift in aging research that shows the way to human rejuvenation”, which is available at https://www.amazon.co.uk/Illusion-Knowledge-paradigm-research-rejuvenation-ebook/dp/B09C7JNB64/
The event was introduced and moderated by David Wood, Chair of London Futurists.
For more information about this event and the speaker, see https://www.meetup.com/London-Futurists/events/280176480/
Also taking part in this event were Nicolas Chernavsky and Nina Torres Zanvettor of NTZ, the publishers of Dr Katcher’s book. For information about NTZ see https://www.ntzplural.com/
For more details of the experiments with E5, see https://www.biorxiv.org/content/10.1101/2020.05.07.082917v1.full.pdf
A newly discovered manipulation mechanism used by parasitic bacteria to slow down plant aging, may offer new ways to protect disease-threatened food crops.
Parasites manipulate the organisms they live off to suit their needs, sometimes in drastic ways. When under the spell of a parasite, some plants undergo such extensive changes that they are described as “zombies”. They stop reproducing and serve only as a habitat and host for the parasitic pathogens.
Until now, there’s been little understanding of how this happens on a molecular and mechanistic level.
