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Archive for the ‘genetics’ category: Page 119

Apr 30, 2023

The Future of Satellite-Based Synthetic Biology and Genetic Engineering

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

The potential of satellite-based synthetic biology and genetic engineering to revolutionize healthcare is becoming increasingly clear. Recent advances in the field have opened up a world of possibilities for medical professionals and researchers, allowing them to diagnose and treat diseases more effectively and efficiently than ever before.

Satellite-based synthetic biology and genetic engineering have already been used to develop treatments for a variety of conditions, including cancer, heart disease, and neurological disorders. By using satellite-based techniques, researchers can quickly and accurately identify genetic mutations and other abnormalities in a patient’s DNA. This allows them to develop personalized treatments that are tailored to the individual’s specific needs.

The use of satellite-based synthetic biology and genetic engineering also has the potential to reduce healthcare costs. By identifying genetic mutations and other abnormalities at an early stage, doctors can avoid costly and unnecessary treatments. This could lead to significant savings for both patients and healthcare providers.

Apr 30, 2023

A new look at the strange case of the first gene-edited babies

Posted by in category: genetics

An experiment by disgraced scientist He Jiankui resulted in the birth of the first babies with edited genes. What happened next?

Apr 30, 2023

AnthropoAge: Biological Age Prediction Without Blood Testing

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

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Apr 30, 2023

Longevity: Scientists use genetic rewiring to increase cells’ lifespan

Posted by in categories: genetics, life extension

Researchers almost doubled the lifespan of yeast cells by genetically rewiring the circuit that controls aging in a new proof-of-concept study.

Apr 30, 2023

Information ‘deleted’ from the human genome may be what made us human

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

What the human genome is lacking compared with the genomes of other primates might have been as crucial to the development of humankind as what has been added during our evolutionary history, according to a new study led by researchers at Yale and the Broad Institute of MIT and Harvard.

The new findings, published April 28 in the journal Science, fill an important gap in what is known about historical changes to the human genome. While a revolution in the capacity to collect data from genomes of different species has allowed scientists to identify additions that are specific to the human —such as a gene that was critical for humans to develop the ability to speak—less attention has been paid to what’s missing in the .

For the new study researchers used an even deeper genomic dive into primate DNA to show that the loss of about 10,000 bits of genetic information—most as small as a few base pairs of DNA—over the course of our differentiate humans from chimpanzees, our closest primate relative. Some of those “deleted” pieces of genetic information are closely related to genes involved in neuronal and cognitive functions, including one associated with the formation of cells in the developing brain.

Apr 29, 2023

New method improves accuracy of DNA sequencing 1,000-fold to detect rare genetic mutations

Posted by in categories: biotech/medical, genetics

A team of researchers at the Broad Institute of MIT and Harvard has developed a new approach to next-generation sequencing that detects genetic mutations within single molecules of DNA.

The method, called Concatenating Original Duplex for Error Correction (CODEC), makes next-generation sequencing about 1,000 times more accurate and opens up the possibility of a range of applications including detecting tiny numbers of cancer mutations in , monitoring cancer during and after treatment, and identifying mutations underlying rare diseases, all at relatively low cost. The study appears today in Nature Genetics.

“The beauty of this approach is that it’s not an overhaul of how sequencing is done,” said Viktor Adalsteinsson, senior author on the study and director of the Gerstner Center for Cancer Diagnostics and leader of the Blood Biopsy Team at the Broad. “It’s not something that requires new instrumentation or —it’s a simple set of steps added into existing sample preparation workflows to improve the accuracy of DNA sequencing.”

Apr 29, 2023

The Neuroscience of Real Life Monsters: Psychopaths, CEOs, & Politicians (Science on Tap Livestream)

Posted by in categories: biological, ethics, genetics, neuroscience, science

Why do some people live lawful lives, while others gravitate toward repeated criminal behavior? Do people choose to be moral or immoral, or is morality simply a genetically inherited function of the brain? Research suggests that psychopathy as a biological condition explained by defective neural circuits that mediate empathy, but what does that mean when neuroscience is used as evidence in criminal court? How can understanding neuroscience give us an insight into the actions and behaviors of our political leaders?

Forensic psychiatrist Dr. Octavio Choi https://med.stanford.edu/profiles/ochoi will explore how emerging neuroscience challenges long-held assumptions underlying the basis—and punishment—of criminal behavior.

Continue reading “The Neuroscience of Real Life Monsters: Psychopaths, CEOs, & Politicians (Science on Tap Livestream)” »

Apr 29, 2023

Relating enhancer genetic variation across mammals to complex phenotypes using machine learning

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

Protein-coding sequence differences have failed to fully explain the evolution of multiple mammalian phenotypes. This suggests that these phenotypes have evolved at least in part through changes in gene expression, meaning that their differences across species may be caused by differences in genome sequence at enhancer regions that control gene expression in specific tissues and cell types. Yet the enhancers involved in phenotype evolution are largely unknown. Sequence conservation–based approaches for identifying such enhancers are limited because enhancer activity can be conserved even when the individual nucleotides within the sequence are poorly conserved. This is due to an overwhelming number of cases where nucleotides turn over at a high rate, but a similar combination of transcription factor binding sites and other sequence features can be maintained across millions of years of evolution, allowing the function of the enhancer to be conserved in a particular cell type or tissue. Experimentally measuring the function of orthologous enhancers across dozens of species is currently infeasible, but new machine learning methods make it possible to make reliable sequence-based predictions of enhancer function across species in specific tissues and cell types.

Apr 28, 2023

Huge cache of mammal genomes offers fresh insights on human evolution

Posted by in categories: asteroid/comet impacts, biotech/medical, evolution, existential risks, genetics

Using Zoonomia’s data, researchers have also constructed a phylogenetic tree that estimates when each mammalian species diverged from its ancestors5. This analysis lends support to the hypothesis that mammals had already started evolutionarily diverging before Earth was struck by the asteroid that killed the dinosaurs about 65 million years ago — but that they diverged much more rapidly afterwards.

Only the beginning

The Zoonomia Project is just one of dozens of efforts to sequence animal genomes. Another large effort is the Vertebrate Genomes Project (VGP), which aims to generate genomes for roughly all 71,000 living vertebrate species, which include mammals, reptiles, fish, birds and amphibians. Although the two projects are independent of one another, many researchers are a part of both, says Haussler, who is a trustee of the VGP.

Apr 28, 2023

Gene-edited cells move science closer to repairing damaged hearts

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

New research offers a path toward transplants that can fix damage from a heart attack without causing life-threatening arrhythmias.