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Archive for the ‘genetics’ category: Page 157

Dec 15, 2021

Sam Harris and Brett Weinstein Twitter feud | Jamie Metzl and Lex Fridman

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

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Jamie Metzl is an author specializing in topics of genetic engineering, biotechnology, and geopolitics.

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Dec 15, 2021

DNA Manipulation in Living Subjects

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

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Genetic Engineering and DNA alteration is an emerging technology with huge ramifications in the future, including potentially altering the DNA of adult humans, not just embryos or plants & animals.

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Dec 13, 2021

AMA Live Stream #1

Posted by in categories: biotech/medical, genetics, life extension

Yesterday’s longevity AMA: michael lustgarten, phd.


Questionsabout yesterday’s video, and more…AMA!

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Dec 12, 2021

‘No one could have predicted.’ DNA offers surprises on how Polynesia was settled

Posted by in categories: biotech/medical, genetics

The earliest genetic traces of Native American ancestry among Polynesians.


The peopling of Polynesia was a stunning achievement: Beginning around 800 C.E., audacious Polynesian navigators in double-hulled sailing canoes used the stars and their knowledge of the waves to discover specks of land separated by thousands of kilometers of open ocean. Within just a few centuries, they had populated most of the Pacific Ocean’s far-flung islands. Now, researchers have used modern DNA samples to trace the exploration in detail, working out what order the islands were settled in and dating each new landfall to within a few decades.

“The whole question of the settlement of Polynesia has been going on for 200 years,” says University of Hawaii, Manoa, archaeologist Patrick Kirch, who was not involved in the research. “This is a really great paper, and I’m happy to see it.”

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Dec 12, 2021

Cut off a hydra’s head and it grows a brand new one. Scientists think they know why

Posted by in category: genetics

And some of the genetic programming for this regenerative superpower may have been passed down to humans.

Dec 12, 2021

Chinese scientists develop precise gene-editing delivery tool

Posted by in categories: biotech/medical, genetics

Chinese scientists developed a targeted delivery system that can conduct precise gene-editing for inflammatory bowel disease. /CFP

Chinese scientists have developed a targeted delivery system that can bring gene-editing tools to colon cells, offering a precise cure for inflammatory bowel disease.

The study, published on Thursday in the journal Science Advances, reported a CRISPR-Cas9 prodrug nanosystem that can transport a gene-editing protein exclusively to inflammatory lesions in mice colons and then “switch on” the protein.

Dec 10, 2021

Nanotechnology for genome editing in multiple muscles simultaneously

Posted by in categories: biotech/medical, chemistry, food, genetics, nanotechnology

Many intractable diseases are the result of a genetic mutation. Genome editing technology promises to correct the mutation and thus new treatments for patients. However, getting the technology to the cells that need the correction remains a major challenge. A new study led by CiRA Junior Associate Professor Akitsu Hotta and in collaboration with Takeda Pharmaceutical Company Limited as part of the T-CiRA Joint Research Program reports how lipid nanoparticles provide an effective means for the delivery to treat Duchenne muscular dystrophy (DMD) in mice.

Last year’s Nobel Prize for Chemistry to the discoverers of CRISPR-Cas9 cemented the impact of genome editing technology. While CRISPR-Cas9 can be applied to agriculture and livestock for more nutritious food and robust crops, most media attention is on its medical potential. DMD is just one of the many diseases that researchers foresee a treatment using CRISPR-Cas9.

“Oligonucleotide drugs are now available for DMD, but their effects are transient, so the patient has to undergo weekly treatments. On the other hand, CRISPR-Cas9 effects are long lasting,” said Hotta.

Dec 10, 2021

New technology is one step closer to targeted gene therapy

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

Gene therapy is a powerful developing technology that has the potential to address myriad diseases. For example, Huntington’s disease, a neurodegenerative disorder, is caused by a mutation in a single gene, and if researchers could go into specific cells and correct that defect, theoretically those cells could regain normal function.

A major challenge, however, has been creating the right “delivery vehicles” that can carry genes and molecules into the that need treatment, while avoiding the cells that do not.

Now, a team led by Caltech researchers has developed a gene-delivery system that can specifically target cells while avoiding the . This is important because a gene therapy intended to treat a disorder in the brain, for example, could also have the side effect of creating a toxic immune response in the liver, hence the desire to find delivery vehicles that only go to their intended target. The findings were shown in both mouse and marmoset models, an important step towards translating the technology into humans.

Dec 9, 2021

Producing Cannabis Biomass Without Growing A Cannabis Plant: How One Company Is Doing It

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

A new technology is allowing one company to produce full-spectrum cannabis without growing the plant itself.

Sounds like something out of a science fiction movie, but it’s very real. In what could be a global first, this week, a publicly traded Canadian-Israeli biotech firm company, BioHarvest Sciences, will announce that it has managed to produce at least 10kg of full-spectrum cannabis without the plant itself.

According to information procured exclusively, the biomass in question was created using the company’s proprietary BioFarming technology platform, which allows it to grow natural plant cells in bioreactors. In addition, management assures, the product is not genetically modified, and is “uniquely consistent and clean.” This could provide an interesting solution to two of the cannabis industry’s main pain points: product variability and contamination — the aseptic, controlled environment means the product isn’t affected by fungi, yeast, mold or any other contaminants or pesticides.

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Dec 8, 2021

Unusual ‘Quadruple Helix’ Structure in DNA May Be Behind Rare Aging Syndrome

Posted by in categories: biotech/medical, genetics, life extension

The double-helix structure has practically become synonymous with DNA, but it isn’t the only way long strands of genetic information squeeze themselves into a tight space.

When a double-strand of DNA doubles back on itself or attaches to another double-strand, it can actually create a quadruple-stranded knot, known as a G-quadruplex.

Scientists first discovered these ‘double-double-helixes’ in living human cells in 2013, and in the years since, these knots have been found in high concentrations in cancerous cells.