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Category: biotech/medical – Page 2,716

Scientists Just Used a Tractor Beam to Levitate the Largest Object Yet

The world’s most powerful tractor beam just lifted a 2 centimeter ball, but could it make levitating humans a reality?

One Shot Could Provide All the Vaccines You’ll Ever Need — https://youtu.be/qQ1VKYX4Vl0

Thumbnail image courtesy of University of Bristol.

The world’s most powerful acoustic tractor beam could pave the way for levitating humans.

https://www.sciencedaily.com/releases/2018/01/180121221627.htm
“Acoustic tractor beams use the power of sound to hold particles in mid-air, and unlike magnetic levitation, they can grab most solids or liquids. For the first time University of Bristol engineers have shown it is possible to stably trap objects larger than the wavelength of sound in an acoustic tractor beam.”

Weaponizing Sound: How a ‘Silent’ Sonic Weapon Might Work
https://www.seeker.com/tech/weaponizing-sound-how-a-sonic-weapon-might-work
“A super secret sonic weapon being used to attack diplomats in a foreign country may sound like the start of a sci-fi novel, but that’s exactly what several US diplomats in Cuba may have been exposed to, the US State Department recently announced.”

How hardy volcanic microbes helped track down an anti-aging “superhero” protein

A team of scientists, looking to figure out how hardy little creatures known as archaea thrive in boiling, volcanic pools of sulfuric acid like they were hot tubs, may have uncovered the key to an anti-aging drug. By manipulating a so-called “super hero” protein common to both archaea and humans, the researchers found a way to “trick” cells into acting younger by keeping the DNA repairing process running much longer than usual.

In previous studies, the researchers examined how archaea have managed to survive in such harsh conditions for billions of years. Eventually they determined that a protein called ssB1 was responsible by helping the organisms repair damage to their DNA. The team says the real eureka moment came when they discovered that we humans have our own versions of this protein, hSSB1.

Scientists Use DNA And A Test Tube To Develop A.I. That May Be Capable Of Creating Its Own ‘Memories’

A new study by Caltech researchers has shown that the A.I. they created is fully capable of reading handwritten numbers.

Scientists have been able to create a completely artificial neural network by using DNA and a test tube, and the results of this AI experiment have been nothing short of astonishing.

During experiments, this artificial intelligence was able to accurately assess handwritten numbers, with scientists suggesting that this research shows that humans are edging ever closer to taking AI and placing it in organic circuits, as the Daily Mail reports.

HIV vaccine on horizon as jab triggers immunity in humans and stops monkeys being infected

A vaccine against HIV is on the horizon after scientists showed a new drug triggered a protective immune response in humans and stopped two thirds of monkeys becoming infected.

In the 35 years since the HIV epidemic began, just four vaccines have been tested on humans, with the best only lowering infection rates by 31 per cent, leading to trials being discontinued.

But in what was described as “promising” and “an important milestone”, an international team of scientists showed that the new vaccine boosted the immune systems of nearly 400 healthy adults.

Scientists discover a new mechanism that prevents the proliferation of cancer cells

Canadian researchers have discovered a new and direct molecular mechanism to stop cancer cells from proliferating. In the prestigious journal Nature Cell Biology, scientists from Université de Montréal show that a disruption of a fine balance in the composition of ribosomes (huge molecules that translate the genetic code into proteins) results in a shutdown of cancer cell proliferation, triggering a process called senescence.

“Ribosomes are complex machines composed of both RNAs and proteins that make all the proteins necessary for to grow,” said UdeM biochemistry professor Gerardo Ferbeyre, the study’s senior author. Cancer cells grow and proliferate relentlessly and thus require a massive amount of ribosomes, he explained. Growing cells must coordinate the production of both ribosomal RNAs and ribosomal proteins in order to assemble them together in strict proportion to each other.

“We were surprised, however, to find that if the production of ribosomal RNA– proportions are driven out of balance in a cancer cell, proliferation can be shut down by in a very simple and direct manner,” said Ferbeyre.

Longevity Film Competition

ANNOUNCING THE LONGEVITY FILM COMPETITION

Please join in the crusade of eliminating age-related disease by making a video, and not only potentially help save lots of lives, but also win the first prize of $10,000! Second prize is a trip to meet Dr. Aubrey de Grey! This international (short) film competition is presented by the SENS Research Foundation, the International Longevity Alliance and Heales. The winning film will be chosen by our remarkable jury. For more information on how to compete and to sign up please visit www.longevityfilmcompetition.com

Neuroscientists Improve Memory Formation, Provide Hope for Alzheimer’s Patients

The workings of memory and learning have yet to be clarified, especially at the neural circuitry level. But researchers at Uppsala University have now, jointly with Brazilian collaborators, discovered a specific brain neuron with a central role in learning. This study, published in Neuron, may have a bearing on the potential for counteracting memory loss in Alzheimer’s disease.

When a person with dementia forgets having just eaten dinner, it is due to hippocampus damage. In contrast, the same person can describe in vivid detail a fishing trip to Norway 40 years ago. Both cases entail the use of episodic memory, the brain’s storage of events in which we have been personally involved. Dementia diseases impair the ability to form new memories, especially of events since the onset of the disease.

Researchers at Uppsala University have now, jointly with Brazilian colleagues, found certain neurons in the brain that play a crucial part in learning. The same research group had previously discovered ‘gatekeeper cells’ or, in technical parlance, OLM (Oriens-lacunosum moleculare) cells. These are located in the hippocampus, the brain area known to be active in forming new memories. The new findings from Klas Kullander’s research group show that OLM cells’ activity affects the encoding of memories in the brain.

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