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Archive for the ‘genetics’ category: Page 229

Aug 7, 2020

How a DNA Test Machine Mutated to Find Covid in 90 Minutes

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

A small DNA-testing company that just months ago was trying to get its footing in consumer genetics is now part of an effort to make U.K. hospitals safer during the pandemic.

The company, DnaNudge, won a 161-million pound ($211 million) order for 5,000 machines and a supply of cartridges to test patients for the new coronavirus in hundreds of the National Health Service hospitals.

Aug 6, 2020

Scientists Program CRISPR to Fight Viruses in Human Cells

Posted by in categories: biotech/medical, genetics

Circa 2019


A common gene-editing enzyme could be used to disable RNA viruses such as flu or Ebola.

Aug 5, 2020

Researchers discover treatment option for rare genetic disorder

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

Researchers from the Icahn School of Medicine used a novel genetic sequencing technology to identify the genetic cause of—and a treatment for—a previously unknown severe auto inflammatory syndrome affecting an 18-year-old girl since infancy.

The technology, tailored to the patient’s own genetic code at a single cell level, helped the researchers characterize an unknown mutation in a gene called JAK1 that caused the patient’s immune system to be permanently turned on, resulting in rashes over much of her skin, growth abnormalities, kidney failure, allergic hypersensitivities, and an unusual inflammatory condition throughout the digestive tract.

The study, led by Dusan Bogunovic, Ph.D., Associate Professor of Microbiology, and Pediatrics, at the Icahn School of Medicine at Mount Sinai, faculty member of The Mindich Child Health and Development Institute and the Precision Immunology Institute at Mount Sinai, and Director of the Center for Inborn Errors of Immunity, was published in the August 3 issue of the journal Immunity. The discovery points toward new ways to study how genetic diseases manifest and presents a model of personalized diagnosis and treatment for patients with genetic diseases.

Aug 4, 2020

Neanderthal DNA contributes to genetic diversity, bringing more understanding to human evolution

Posted by in categories: biotech/medical, evolution, genetics, internet

The advent of DNA sequencing has given scientists a clearer insight into the interconnectedness of evolution and the web-like path that different organisms take, splitting apart and coming back together. Tony Capra, associate professor of biological sciences, has come to new conclusions about the influence of Neanderthal DNA on some genetic traits of modern humans.

The article “Neanderthal introgression reintroduced functional ancestral alleles lost in Eurasian populations” was published in the journal Nature Ecology & Evolution on July 27.

The ancestors of all modern humans lived across the African continent, until approximately 100,000 years ago when a subset of humans decided to venture further afield. Neanderthals, an extinct relative of modern humans, had been longtime residents of Europe and central and south Asia; their ancestors had already migrated there 700,000 years previously. The humans who moved into central Asia and the Middle East encountered and reproduced with Neanderthals. Neanderthal DNA is present in some modern humans, and now research shows that can sometimes be a good thing.

Aug 3, 2020

Universal ‘One-Size-Fits-All’ Cancer Treatment

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

:ooooo.


What is CAR-T therapy?

CAR-T therapy involves genetically engineering patient T-cells so that they express a chimeric antigen receptor (CAR).

Continue reading “Universal ‘One-Size-Fits-All’ Cancer Treatment” »

Aug 3, 2020

Humans and flies employ very similar mechanisms for brain development and function

Posted by in categories: genetics, neuroscience

With these new findings scientists can potentially better understand the subtle changes that can occur in genes and brain circuits that can lead to mental health disorders such as anxiety and autism spectrum disorders.

Although physically very different, research has found that the brains of flies, mice and humans are similar in how they form and how they function. Data has shown that the that underlie the brain development of insects and mammals are very similar but this can be interpreted in two different ways, where some believe it provides evidence of one single ancestor for both mammals and insects and others think it could support the theory that brains evolved multiple times independently.

Published in the journal Proceedings of the National Academy of Sciences (PNAS), this collaborative study between King’s College London, University of Arizona, University of Leuven and Leibniz Institute DSMZ has provided strong evidence that the mechanisms that regulate genetic activity required for the formation of brain areas important to control behavior, is the same for insects and mammals.

Aug 3, 2020

‘Smart Toilet’ Checks You for Diseases Like Cancer

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

A disease-detecting “precision health” toilet can sense multiple signs of illness through automated urine and stool analysis, according to a new study.

The “smart toilet” isn’t the kind that lifts its own lid in preparation for use; this toilet includes technology that can detect a range of disease markers in stool and urine, including those of some cancers, such as colorectal or urologic cancers.

The device could hold particular appeal for people genetically predisposed to certain conditions, such as irritable bowel syndrome, prostate cancer, or kidney failure, and want to keep on top of their health.

Aug 3, 2020

Silencing the SARS-CoV-2 Receptor With CRISPR and Epigenetic Modifications

Posted by in categories: biotech/medical, genetics

The Hackett Group at EMBL Rome explores epigenetics, genome regulation and cell identity. Recently, the scientists developed a novel CRISPR molecular tool for editing the epigenome, enabling transient modifications that can switch certain genes “on” and “off” temporarily.

The SARS-CoV-2 virus that has caused the COVID-19 global pandemic makes its way into a host cell via a protein known as ACE2, which is involved in a range of physiological functions in the body.

Continue reading “Silencing the SARS-CoV-2 Receptor With CRISPR and Epigenetic Modifications” »

Aug 1, 2020

Scientists genetically alter squids for the first time in ‘game-changing’ breakthrough

Posted by in categories: biological, genetics

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The squid typically have dark eyes and an array of black and reddish brown spots across their bodies while the genetically altered hatchlings have light pink or red eyes and almost no dark spots.

The milestone, which was first reported in Current Biology Thursday, could pave the way for researchers to study the biology of cephalopods like squid, octopus and cuttlefish the same way they study more common lab animals like study mice and fruit flies.

Aug 1, 2020

Stanford team deploys CRISPR gene editing to fight COVID-19

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

The Stanford team worked with researchers at the Department of Energy’s Lawrence Berkeley National Laboratory to develop a technique called prophylactic antiviral CRISPR in human cells, or PAC-MAN. The technology disables viruses by scrambling their genetic code. The researchers developed a new way to deliver the technology into lung cells, they reported in the journal Cell.


Stanford bioengineers teamed up with researchers at the Lawrence Berkeley National Laboratory to develop a CRISPR system that neutralizes SARS-CoV-2 by scrambling the virus’s genetic code. They believe the technology could prove useful for combating several types of viruses, including influenza.