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Archive for the ‘genetics’ category: Page 188

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.

Continue reading “Producing Cannabis Biomass Without Growing A Cannabis Plant: How One Company Is Doing It” »

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.

Dec 7, 2021

New Imaging Method Visualizes Blood Flow in the Brain Down to a Single Blood Cell

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

Researchers from the Skolkovo Institute of Science and Technology and Saratov State University have come up with an inexpensive method for visualizing blood flow in the brain. The new technique is so precise it discerns the motions of individual red blood cells — all without the use of toxic dyeing agents or expensive genetic engineering. The study was published in The European Physical Journal Plus.

To understand more about how the brain’s blood supply works, researchers map its blood vessel networks. The resulting visualizations can rely on a variety of methods. One highly precise technique involves injecting fluorescent dyes into the blood flow and detecting the infrared light they emit. The problem with dyes is they are toxic and also may distort mapping results by affecting the vessels. Alternatively, researchers employ genetically modified animals, whose interior lining of blood vessels is engineered to give off light with no foreign substances involved. Both methods are very expensive, though.

Researchers from Skoltech and Saratov State University have devised an inexpensive method for visualizing even the smallest capillaries in the brain. The method — which integrates optical microscopy and image processing — is dye-free and very fine-grained, owing to its ability to detect each and every red blood cell travelling along a blood vessel. Since the number of RBCs in capillaries is not that high, every cell counts, so this is an important advantage over other methods, including dye-free ones.

Dec 6, 2021

Study identifies factor in ‘young blood’ that helps rejuvenate aged mouse muscle

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

As we age, our muscles gradually become smaller, weaker and less able to heal after injury. In a new study, UPMC and University of Pittsburgh researchers pinpoint an important mediator of youthfulness in mouse muscle, a discovery that could advance muscle regeneration therapies for older people.

Published today in Nature Aging, the study demonstrates that circulating shuttles called , or EVs, deliver for the longevity protein known as Klotho to cells. Loss of muscle function and impaired muscle repair in old may be driven by aged EVs, which carry fewer copies of these instructions than those in .

The findings are an important advance in understanding why the capacity for muscles to regenerate dwindles with age.

Dec 3, 2021

Ed Boyden on Optogenetics —- selective brain stimulation with light

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

http://spie.org/bios.

Boyden’s award-winning research has led to tools that can activate or silence neurons with light, enabling the causal assessment of how specific neurons contribute to normal and pathological brain functions.

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Dec 3, 2021

Karl Deisseroth: Optogenetics, Psychiatry, Emotion, Autism, Dissociation & “Projections” | #35

Posted by in categories: genetics, neuroscience

Nick talks to Stanford psychiatrist and neuroscientist Dr. Karl Deisseroth. They discuss a range of topics about the brain, including autism, depression, bipolar disorder, dissociation, and more. They also talk about optogenetics, a technique Karl co-developed which uses light to control specific neurons in the brain, allowing neuroscientists to turn circuits in the brain on and off to reveal how the brain generates perception, emotion, and behavior. They also talk about Karls’ new book, “Projections: A Story of Human Emotion.”

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Continue reading “Karl Deisseroth: Optogenetics, Psychiatry, Emotion, Autism, Dissociation & ‘Projections’ | #35” »

Dec 3, 2021

Explained: Optogenetics

Posted by in category: genetics

Associate Professor of Biological Engineering and Brain and Cognitive Sciences Ed Boyden explains optogenetics and how it is used in neurological research.

Video: Emily Heusted

Dec 2, 2021

David Sinclair || Why We Age and Why We Don’t Have To

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

In this episode, I talk to world-renowned biologist David Sinclair about aging and longevity. David rejects the notion that the deterioration of health is a natural part of growing old and asserts that aging is a disease itself that we need to reverse. But how will a reset of our biological clocks affect our interactions, responses to adversity, morality, and how we live our lives? We discuss the ethical implications of limitless lifespans and also touch on the topics of death, evolution, genetics, medicine, and data tracking.

Bio.
Dr. David Sinclair is a professor in the department of genetics and co-director of the Paul F. Glenn Center for Biology of Aging Research at Harvard Medical School and co-founder of the scientific journal Aging. He is best known for his work on understanding why we age and how to slow its effects. In addition to being a co-founder of several biotechnology companies, he’s the author of the book Lifespan: Why We Age – and Why We Don’t Have To. Dr. Sinclair was listed by TIME magazine as one of the “100 most influential people in the world”.

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Dec 1, 2021

Scientists listed ways of applying genetic engineering to treat Parkinson’s disease

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

Circa 2019


Researchers of Sechenov University and University of Pittsburgh described the most promising strategies in applying genetic engineering for studying and treating Parkinson’s disease. This method can help evaluate the role of various cellular processes in pathology progression, develop new drugs and therapies, and estimate their efficacy using animal disease models. The study was published in Free Radical Biology and Medicine.

Parkinson’s disease is a neurodegenerative disorder accompanied by a wide array of motor and cognitive impairments. It develops mostly among elderly people (after the age of 55–60). Parkinson’s symptoms usually begin gradually and get worse over time. As the disease progresses, people may have difficulty controlling their movements, walking and talking and, more importantly, taking care of themselves. Although there is no cure for Parkinson’s disease, medicines, surgical treatment, and other therapies can often relieve some symptoms.

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Nov 30, 2021

Scientists 3D-Print Programmable Living Structures With New Microbial Ink

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

There’s also been a lot of interest in creating more versatile “living inks” made up of bacteria, which can be genetically engineered to do everything from deliver drugs to clean up pollutants. But so far, approaches have relied on mixing microbes with polymers that help provide the ink with some structural integrity.

Now, researchers have developed a new living ink that more closely lives up to the name by replacing the polymers with a protein made by genetically engineered E. coli bacteria. The researchers say this opens the door to seeding large-scale, living structures from nothing more than a simple cell culture.

The key to the breakthrough was to repurpose the proteins that E. coli cells secrete to stick together and form hard-to-shift biofilms. In a paper in Nature Communications, the researchers describe how they genetically engineered bacteria to produce two different versions of this protein known as a “knob” and a “hole,” which then lock together to form a robust cross-linked mesh.