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Archive for the ‘genetics’ category: Page 144

Jul 22, 2022

Optogenetics for light control of biological systems

Posted by in categories: biotech/medical, genetics

Optogenetic techniques involve the introduction of photoreceptors into selected cells to allow control over their activity using light. In this Primer, Emiliani et al. discuss the most commonly used optogenetic tools, illumination approaches and applications in medicine, cardiovascular science and plants, among many other uses.

Jul 22, 2022

One-time HIV treatment on the horizon after gene-editing breakthrough

Posted by in categories: biotech/medical, genetics

TEL AVIV, Israel — A one-time vaccine for HIV is a step closer to reality, according to a new study. A team in Israel used gene-editing technology to engineer type B white blood cells, which can trigger the immune system to fight the virus.

Dr. Adi Barzel of Tel Aviv University says this is one of the few times scientists have been able to engineer B cells outside of the human body. Their study finds that B white blood cells spark the immune system to produce more HIV-neutralizing antibodies. Currently, there is no cure for AIDS, which the HIV virus causes.

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Jul 21, 2022

Scientists Have Created Genetically Modified Drought-Resistant Plants

Posted by in categories: biological, chemistry, genetics

Proteins serve a variety of purposes in plants in addition to being the fundamental building blocks of life. More than 20 billion protein molecules make up a typical plant cell, helping to stabilize its structure and sustain cellular metabolism.

Researchers at Heidelberg University’s Centre for Organismal Studies have shed light on a biological process that increases the life of plant proteins. They have now discovered a crucial protein, called N-terminal acetylation, that controls this mechanism. The study’s findings were published in the journals Molecular Plant and Science Advances.

N-terminal acetylation is a chemical marker that develops during the production of proteins. Plants do this by affixing an acetic acid.

Jul 20, 2022

Grandparents may hold a surprising evolutionary benefit — sparked

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

It’s all about a mutation of genome. Researchers from the University of California San Diego School of Medicine have discovered a set of human gene mutations that prevent cognitive decline and dementia in older adults, according to a new study published on July 9, 2022, in the journal Molecular Biology and Evolution. The scientists focused on one of the mutated genes and traced its evolution through its appearance in the human genome.


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Jul 19, 2022

Scientists hack fly brains to make them remote controlled

Posted by in categories: cybercrime/malcode, engineering, genetics, nanotechnology, neuroscience, particle physics

Researchers at Rice University have shown how they can hack the brains of fruit flies to make them remote controlled. The flies performed a specific action within a second of a command being sent to certain neurons in their brain.

The team started by genetically engineering the flies so that they expressed a certain heat-sensitive ion channel in some of their neurons. When this channel sensed heat, it would activate the neuron – in this case, that neuron caused the fly to spread its wings, which is a gesture they often use during mating.

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Jul 19, 2022

How technology can let us see and manipulate memories

Posted by in category: genetics

Optogenetics and advanced imaging have helped neuroscientists understand how memories form and made it possible to manipulate them.

Jul 19, 2022

The Devastating Destruction of the Human Race | The Killing Star

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

So, I think I uncovered a treasure. The Killing Star by Charles Pellegrino and George Zebrowski was originally published 1995 and it paints a dark and seemingly plausible depiction of humanity’s potential future. This book is about several things genetic engineering and cloning, it’s about the destructive power of fanaticism, It’s about the over confidence and hubris of humanity, and that gets really hammered home in this book with all it’s references to the titanic, which has for a very long time been thought of as one of the greatest symbols of human hubris, it’s about AI, and when it goes to far, it’s about our over dependence on technology, it’s about humanity’s indefinite survival outside of earth, and most importantly, it’s about the devastating annihilation of the vast majority of the human race.

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Jul 19, 2022

Research Shows Investigational Cancer Drug Can Boost Regeneration of Damaged Nerves After Spinal Cord Injury

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

Scientists have demonstrated that a brain-penetrating candidate drug currently in development as a cancer therapy can promote regeneration of damaged nerves after spinal trauma.

The research used cell and animal models to show that when taken orally the candidate drug, known as AZD1390, can block the response to DNA

DNA, or deoxyribonucleic acid, is a molecule composed of two long strands of nucleotides that coil around each other to form a double helix. It is the hereditary material in humans and almost all other organisms that carries genetic instructions for development, functioning, growth, and reproduction. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).

Jul 19, 2022

A New Technology Could Help Solve a DNA Mystery

Posted by in categories: biotech/medical, genetics

Researchers from Oxford Nanopore Technologies, Weill Cornell Medicine, and the New York Genome Center have created a new technique to evaluate the three-dimensional structure of the human DNA

DNA, or deoxyribonucleic acid, is a molecule composed of two long strands of nucleotides that coil around each other to form a double helix. It is the hereditary material in humans and almost all other organisms that carries genetic instructions for development, functioning, growth, and reproduction. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).

Jul 18, 2022

Edits to a cholesterol gene could stop the biggest killer on earth

Posted by in categories: biotech/medical, genetics

In a first, a patient in New Zealand has undergone gene-editing to lower their cholesterol. If it works, it could signal the start of an era in which nearly everyone might undergo a gene-edit in order to prevent disease.