The World Health Organization hopes to test an experimental Marburg vaccine in Equatorial Guinea, which announced its first outbreak of the virus Monday.
Nine deaths have been confirmed, while 16 suspected patients are in quarantine. Health officials are also monitoring 15 asymptomatic close contacts of infected people.
No vaccine or antiviral treatment is approved to treat Marburg virus disease, which has an average death rate of around 50%, according to the WHO.
Professor of Biology at Tufts University Michael Levin shows the remarkable plasticity of somatic (non-neural) cells and the way they communicate through bioelectric signalling to produce different morphologies. He argues that cellular control of growth and form is a type of collective intelligence.
Prof. Levin also shows that by manipulating bioelectric signalling between cells it is possible to change what the cells are going to build. The particular examples include converting one type of tadpole tissue into another, making planaria (a type of flatworm) to regrow two heads, etc. Prof. Levin’s and his team work has profound theoretical contributions towards understanding better biological intelligence, and from the practical side, it may lead to applications in biomedicine (solving birth defects, curing degenerative disease and cancer).
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A decades-old drug used to treat urinary tract infections (UTIs) appears to have saved the life of a man infected by the “brain-eating” amoeba — and his case highlights the tremendous potential of a new type of genetic sequencing technology.
The patient: In 2021, a 54-year-old man was admitted to a Northern California hospital following a seizure. After an MRI revealed a mass in his brain, he was transferred to the UCSF Medical Center, where the mass was biopsied.
Based on the biopsy, doctors suspected that the patient’s brain was being attacked by an amoeba — a highly dangerous and unusual infection. They sent a sample to the University of Washington, Seattle, where a PCR test identified the pathogen as Balamuthia mandrillaris — a deadly brain-eating amoeba that kills more than 90% of people it infects.
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This is an in-depth interview with scientist, author and expert on longevity science, Dr Andrew Steele. We discuss what ageing even is, whether it should be regarded as a disease, how we differ from other animals, where the research is, what treatments look promising, health and economic policy, and what the future looks like.
Scientists from the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health, have removed a major roadblock to better understanding of mpox (formerly, monkeypox). They developed a mouse model of the disease and used it to demonstrate clear differences in virulence among the major genetic groups (clades) of mpox virus (MPXV).
The research, appearing in Proceedings of the National Academy of Science, was led by Bernard Moss, M.D., Ph.D., chief of the Genetic Engineering Section of NIAID’s Laboratory of Viral Diseases.
Historically, mpox, a disease resembling smallpox, was only occasionally transmitted from rodents to non-human primates or people, and was observed primarily in several African countries. Mpox rarely spread from person to person. That pattern changed in 2022 with an outbreak in which person-to-person mpox transmission occurred in more than 100 locations worldwide.
Artificial enzymes can fight the COVID-causing virus by selectively snipping apart its RNA genome, a new study suggests. Researchers say the technique may overcome key problems with previous technologies and could help create rapid antiviral treatments as threats emerge.
When the COVID pandemic struck, University of Cambridge chemical biologist Alexander Taylor scrambled to repurpose a gene-cutting technology he and his colleagues had been developing: synthetic enzymes called XNAzymes (xeno nucleic acids) formed from artificial RNA. Working single-handedly during lockdown, Taylor generated five XNAzymes targeting sequences in SARS-CoV-2’s genome in a matter of days.
Enzymes are natural catalysts that facilitate chemical transformations—in this case, by chopping other molecules apart. But previous DNA-and RNA-based enzymes have struggled to cut long, highly structured molecules such as virus genomes. Instead they destroy targets by recruiting existing enzymes inside cells—a less precise process that can lead to “off-target” cuts and increased side effects.
Summary: Tracking hippocampal neurons in mice as they watched a movie revealed novel ways to improve artificial intelligence and track neurological disorders associated with memory and learning deficits.
Source: UCLA
Even the legendary filmmaker Orson Welles couldn’t have imagined such a plot twist.
One question for Brad Ringeisen, a chemist and executive director of the Innovative Genomics Institute. Founded by Nobel Prize-winning biochemist Jennifer Doudna, it aims to bridge revolutionary gene-editing tool development to affordable and accessible solutions in human health and climate.
Will CRISPR cure cancer?
We’re always thinking about: What are those targets in the future? Cancer is one of those things. The biggest impact is going to be what’s called systemic delivery, or in vivo delivery. There’s been one example of this in the community right now—to treat a liver disease. Intellia Therapeutics, a biotech company, has shown that you can actually intravenously apply CRISPR-Cas9 treatment. (CRISPR is the guide RNA, the targeting molecule, and Cas9 is the cutting molecule that edits DNA.) It can go to the liver and target the liver cells, and make edits at a high enough efficacy to treat genetic liver disease. The problem is that the liver is the easiest. It’s like the garbage can of the body. Pretty much anything that you put into the body is ultimately going to find its way to the liver. So that’s absolutely the easiest tissue to deliver to. But trying to deliver to a solid tumor, or to the brain, is much more difficult.
A team of undergraduate and graduate chemistry students in Jennifer Hines’ lab at Ohio University recently uncovered a new class of compounds that can target RNA and disrupt its function. This discovery identified a chemical scaffold that could ultimately be used in the development of RNA-targeted medicines to treat bacterial and viral infections, as well as cancer and metabolic diseases.
RNA is chemically like DNA but also controls the extent to which the DNA’s instructions are carried out within a living cell. It is this essential regulatory role in the function of the cell that makes RNA such an attractive target.
“Trying to target RNA is at the forefront of medicinal chemistry research with enormous potential for treating diseases,” said Hines, professor of chemistry and biochemistry in the College of Arts and Sciences. “However, there are relatively few compounds known to directly modulate RNA activity which makes it challenging to design new RNA-targeted therapeutics.”