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Archive for the ‘biotech/medical’ category: Page 18

Sep 25, 2024

Bacterial ‘flipping’ allows genes to assume different forms

Posted by in categories: biotech/medical, genetics

Imagine being one cartwheel away from changing your appearance. One flip, and your brunette locks are platinum blond. That’s not too far from what happens in some prokaryotes, or single-cell organisms, such as bacteria, that undergo something called inversions.

A study led by scientists at Stanford Medicine has shown that inversions, which cause a physical flip of a segment of DNA and change an organism’s genetic identity, can occur within a single gene, challenging a central dogma of biology — that one gene can code for only one protein.

“Bacteria are even cooler than I originally thought, and I’m a microbiologist, so I already thought they were pretty cool,” said Rachael Chanin, PhD, a postdoctoral scholar in hematology. Microbiologists have known for decades that bacteria can flip small sections of their DNA to activate or deactivate genes, Chanin said. To the team’s knowledge, however, those somersaulting pieces have never been found within the confines of a single gene.

Sep 25, 2024

Human genome stored inside near-indestructible ‘5D memory crystal’ that could survive to the end of the universe

Posted by in categories: biotech/medical, existential risks

The record-breaking crystal will act as a DNA time capsule that could be used to bring back humanity after our extinction, researchers say. But not everyone is convinced.

Sep 25, 2024

Pain relief from the placebo effect may not actually involve dopamine

Posted by in categories: biotech/medical, neuroscience

Dopamine was long thought to play a part in the placebo effect for pain relief, but a new study is questioning its true role.

By Christa Lesté-Lasserre

Sep 24, 2024

Archaeologists Discovered an Ancient Chinese Immortality Potion. It Exposes the True Cost of Chasing Eternal Life

Posted by in categories: biotech/medical, life extension

Humans have been trying to cheat death for thousands of years. Myths about elixirs promising immortality span various cultures, as do real concoctions that often did more harm than good. One of the most misguided attempts at creating a potion for immortality involved the first emperor of China and mercury pills. In his obsession with finding a formula that would grant him eternal life, Qin Shi Huang downed mercury and other toxic substances nearly two millennia ago, believing his alchemists had hit upon the perfect magical tonic. Unsurprisingly, he died prematurely at age 49.

Archeologists have discovered another 2,000-year-old “elixir for immortality” that sheds light on the true cost of chasing down eternal life.

While excavating the tomb of a Western Han noble family in China’s Henan province in 2018, researchers unearthed a bronze pot. At first, the team thought the liquid inside was wine, but more recently determined that it was an alchemist’s formulation: a yellow liquid containing potassium nitrate and alunite. These two ingredients are cited in ancient Taoist texts as ingredients for immortality. Potassium nitrate is an inorganic salt used today as a natural source of nitrate, and is a useful ingredient in food preservatives, fertilizer, and fireworks. Alunite is a mineral that forms in volcanic or sedimentary environments when sulfur-rich minerals oxidize. It has historically been used to make alum, which is important for water purification, tanning, and dyeing.

Sep 24, 2024

Silicon Valley billionaire says AI will take over 80% of work in 80% of jobs

Posted by in categories: biotech/medical, employment, food, robotics/AI

“I estimate that 80% of 80% of all jobs, maybe more, can be done by an AI,” famed investor and entrepreneur Vinod Khosla has warned. “Be it primary care doctors, psychiatrists, sales people, oncologists, farm workers or assembly line workers, structural engineers, chip designers, you name it.”


Say hello to a universal income and a 3-day week.

Continue reading “Silicon Valley billionaire says AI will take over 80% of work in 80% of jobs” »

Sep 24, 2024

A two-dose schedule could make HIV vaccines more effective

Posted by in category: biotech/medical

Several years ago, MIT researchers showed that administering a series of escalating doses of an HIV vaccine over a two-week period could help overcome a part of that challenge by generating larger quantities of neutralizing antibodies. However, a multidose vaccine regimen administered over a short time is not practical for mass vaccination campaigns.

In a new study, the researchers have now found that they can achieve a similar immune response with just two doses, given one week apart. The first dose, which is much smaller, prepares the immune system to respond more powerfully to the second, larger dose.

Sep 24, 2024

AF hospital adds ‘virus-zapping’ robot to inventory

Posted by in categories: biotech/medical, health, robotics/AI

This was created by a company called Xenex a decade ago In San Antonio Texas, where I used to live.


JOINT BASE LANGLEY-EUSTIS, Va. (AFNS) — Standing at 5 feet 2 inches tall, U.S. Air Force Hospital Langley’s newest staff member doesn’t initially have a commanding presence; however, after five minutes, its impact has the potential to save countless lives around the world.

The 633rd Medical Group received a germ-zapping robot, nicknamed “Saul,” which harnesses the power of technology to kill off viruses — including the Ebola virus. Airmen were given a demonstration of the robots functions and capabilities from Geri Genant, the Xenex Healthcare Services implementation manager.

Continue reading “AF hospital adds ‘virus-zapping’ robot to inventory” »

Sep 24, 2024

HLA genes in Type 2 diabetes: Protection and risk

Posted by in categories: biotech/medical, genetics

Robert C Williams performed genetic analysis to understand how the HLA and SLC16A11 genes affect Type 2 diabetes in Indigenous Americans.

Sep 24, 2024

George Church lab spawns $75m cell therapy startup

Posted by in categories: biotech/medical, genetics

GC Therapeutics’ plug-and-play stem cell programming platform aims to reduce cell therapy development time by up to 100 times.

Cell therapies have revolutionized the treatment of certain disease areas; however, challenges in scaling these therapies…


Cell therapy startup GC Therapeutics (GCTx) has emerged from the lab of renowned geneticist George Church, securing a $65 million Series A funding round that brings the total raised by the company to a cool $75 million. The company is on a mission to enable the next generation of cell therapies through its proprietary TFome platform, which GCTx claims is the first plug-and-play induced pluripotent stem cell (iPSC) cellular programming platform.

Continue reading “George Church lab spawns $75m cell therapy startup” »

Sep 23, 2024

Study shows cholesterol enhances exosome-mediated RNA drug delivery

Posted by in categories: biotech/medical, genetics

RNA interference (RNAi) technology has gradually become a cutting-edge technology for treating diseases such as genetic disorders and cancer due to its huge potential in gene expression regulation. However, the efficient delivery and safety of short interfering RNA (siRNA) remain key challenges for its clinical application.

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