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Sep 12, 2021

New programmable gene editing proteins found outside of CRISPR systems

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

Within the last decade, scientists have adapted CRISPR systems from microbes into gene editing technology, a precise and programmable system for modifying DNA. Now, scientists at MIT’s McGovern Institute and the Broad Institute of MIT and Harvard have discovered a new class of programmable DNA modifying systems called OMEGAs (Obligate Mobile Element Guided Activity), which may naturally be involved in shuffling small bits of DNA throughout bacterial genomes.

These ancient DNA-cutting enzymes are guided to their targets by small pieces of RNA. While they originated in bacteria, they have now been engineered to work in human cells, suggesting they could be useful in the development of gene editing therapies, particularly as they are small (~30% the size of Cas9), making them easier to deliver to cells than bulkier enzymes. The discovery, reported in the journal Science, provides evidence that natural RNA-guided enzymes are among the most abundant proteins on earth, pointing toward a vast new area of biology that is poised to drive the next revolution in genome editing technology.

The research was led by McGovern investigator Feng Zhang, who is James and Patricia Poitras Professor of Neuroscience at MIT, a Howard Hughes Medical Institute investigator, and a core institute member of the Broad Institute. Zhang’s team has been exploring natural diversity in search of new molecular systems that can be rationally programmed.

Sep 11, 2021

Mammals Carry a Graveyard of Viruses in Our DNA, And It Could Have a Crucial Purpose

Posted by in category: biotech/medical

Huge swaths of our DNA library are made up of non-coding genes that were long regarded as “junk DNA”. Recent findings, however, have shown these bits of DNA actually have many purposes in mammals.

Some help form the structure in our DNA molecules so they can be packaged neatly within our cell nuclei while others are involved in gene regulation. Now, researchers from the University of New South Wales in Australia have discovered another potential purpose for these non-coding instructions, within the genomes of marsupials.

Continue reading “Mammals Carry a Graveyard of Viruses in Our DNA, And It Could Have a Crucial Purpose” »

Sep 11, 2021

Job For Particle Accelerators May Be Possible on Tabletop

Posted by in categories: particle physics, quantum physics

Cold clouds of atoms—Bose-Einstein Condensates—will test quantum gravity, enable atom-scale lithography and prospect for minerals from afar.

Sep 11, 2021

Texas researchers develop new bioink specifically for 3D bioprinting blood vessels

Posted by in categories: 3D printing, bioprinting, biotech/medical, engineering

A team of researchers from Texas A&M University’s Department of Biomedical Engineering has designed and 3D bioprinted a highly realistic model of a blood vessel.

The model is made of a newly nanoengineered, purpose-built hydrogel bioink and closely mimics the natural vascular function of a real blood vessel, as well as its disease response. The team hopes its work can pave the way for advanced cardiovascular drug development, expediting treatment approval while eliminating the need for animal and human testing altogether.

“A remarkably unique characteristic of this nanoengineered bioink is that regardless of cell density, it demonstrates a high printability and ability to protect encapsulated cells against high shear forces in the bioprinting process,” said Akhilesh Gaharwar, associate professor at the university and co-author of the study. “Remarkably, 3D bioprinted cells maintain a healthy phenotype and remain viable for nearly one month post-fabrication.”

Sep 11, 2021

Starlink satellite drops out of orbit, fears of crashing into the UK

Posted by in categories: internet, space, surveillance

The UK Space Agency tweeted: “We are monitoring its re-entry together with @DefenceHQ, and there is no expectation the re-entry will cause any damage. Due to the varying input data, natural forces and associated observation error, there are always high levels of uncertainty when performing re-entry predictions on any satellite”.

“Today, a Starlink-1855 satellite re-entered the Earth’s atmosphere. There is a chance it will re-enter over the UK, and you might be able to spot the satellite as it burns up. Starlink has a fantastic track record or orchestrating safe and reliable re-entries. We do not expect the return of the satellite to cause any damage. Still the UK Space Agency and the Ministry of Defence continually monitor and assess the re-entries of satellite and debris and any risk to British territories through our joined Space Surveillance and Tracking capabilities”.

Sep 11, 2021

Experts Link Sidewalk Malware Attacks to Grayfly Chinese Hacker Group

Posted by in category: cybercrime/malcode

Chinese hackers may be behind Sidewalk malware attacks, experts say.

Sep 11, 2021

Samsung’s new stretchable display takes immersion to a whole new level

Posted by in category: futurism

Samsung has showcased its new stretchable display technology that can add another dimension to 2D content. Read on to learn more.

Sep 11, 2021

Largest virtual universe free for anyone to explore

Posted by in categories: alien life, computing, particle physics

Forget about online games that promise you a “whole world” to explore. An international team of researchers has generated an entire virtual universe, and made it freely available on the cloud to everyone.

Uchuu (meaning “outer space” in Japanese) is the largest and most realistic simulation of the to date. The Uchuu simulation consists of 2.1 trillion particles in a computational cube an unprecedented 9.63 billion light-years to a side. For comparison, that’s about three-quarters the distance between Earth and the most distant observed . Uchuu reveals the evolution of the universe on a level of both size and detail inconceivable until now.

Continue reading “Largest virtual universe free for anyone to explore” »

Sep 11, 2021

NASA Dragonfly launch date, mission, cost, and alien hunting for the Titan explorer

Posted by in category: alien life

NASA won’t be sending a rover to Saturn’s moon Titan in search of alien fly. It’s sending a Dragonfly.

Sep 11, 2021

Inspiration4 private crewed mission nears launch

Posted by in category: space travel

Source: SpaceNews Date Published: 09/10/2021.

SpaceX is gearing up for its first purely commercial human spaceflight, but many details about the mission remain unclear.