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A tiny, four-fingered 'hand' folded from a single piece of DNA can pick up the virus that causes COVID-19 for highly sensitive rapid detection and can even block viral particles from entering cells to infect them, researchers report.
Researchers are exploring phages, viruses that infect bacteria, as a possible solution. In the new study, researchers successfully modified DNA from four types of phages to kill a deadly pathogen. Antimicrobial resistance is an urgent and growing global crisis.
The treatment, which uses base editing to make a single-letter change in DNA, reduced levels of the disease-causing prion protein in the brain by as much as 60 percent. But the researchers needed to deliver the base editors to the brain. They then administered the AAVs to mice infected with the human prion protein.
Williams January 8, 2024 Credit: Susanna Hamilton, Broad Communications Researchers have developed virus-like particles that can deliver gene-editing cargo to cells, including those in the mouse brain. Prime editing, described in 2019 by Liu’s group, can make longer and more diverse types of DNA changes than other types of editing.
An ancient RNA-guided system could simplify delivery of gene editing therapies By Corie Lok February 27, 2025 Breadcrumb Home An ancient RNA-guided system could simplify delivery of gene editing therapies The programmable proteins are compact, modular, and can be directed to modify DNA in human cells.
Evolved prime editors are smaller and more efficient for therapeutic applications By Corie Lok August 31, 2023 Breadcrumb Home Evolved prime editors are smaller and more efficient for therapeutic applications Researchers have evolved the editing machine at the heart of the prime editing system, which can make a wide range of changes to the genome.
As a part of its life cycle, the human immunodeficiency virus-1 (HIV) inserts a copy of its DNA into human immune cells. Some of these newly infected immune cells can then transition into a dormant, latent state for a long period of time, which is referred to as HIV latency. Credit: UNC Division of Infectious […]
Viral genetic material was integrated into the genome of the first multi-cellular beings and is still in our DNA today. Researchers from the CNIO (Spanish National Cancer Research Centre) describe now in the journal Science […]
The advance, from the lab of Broad core institute member David Liu , could one day help researchers develop a single gene therapy for diseases such as cystic fibrosis that are caused by one of hundreds or thousands of different mutations in a gene.
When COVID-19 emerged in 2019, by contrast, mRNA vaccines developed by Pfizer and Moderna took just 326 days from the initial sequencing of the virus to gaining approval for emergency use. The Coalition for Epidemic Preparedness Innovations (CEPI)—a nonprofit organization that funds vaccine research and development—thinks so.
After that, I spent over a decade at a large instrument and genomics company working in, and then leading, research and development. Many people weren’t interested in the field and those that were familiar with it couldn’t see a path to building a billion-dollar business from DNA. Some of our best investors started as ‘no’s.
Researchers from Columbia University and the US Department of Energy (DOE)’s Brookhaven National Laboratory have elucidated a method to produce large quantities of the receptor that the SARS-CoV-2 spike protein uses to bind to the surface of human cells.
We can learn about life, past and present, anywhere we find DNA and determine its sequence. DNA Science has described intriguing sources of environmental DNA, aka eDNA: DNA in Strange Places: Hippo Poop, Zoo Air, and Cave Dirt and A Glimpse of the Ocean’s Twilight Zone Through Environmental DNA.
Genomics applies to all species, revealing evolution in action, because we all use the same genetic code – that is, the correspondence between DNA sequences and the amino acid sequences of proteins. Cats and Bird Flu Comparing DNA sequences is a little like linguistic research that connects languages. emerged in late 2021.
New researched published in the journal Immunity , T cells exhibit an unusual, yet vital behaviour in their battle against pathogens and cancer cells, involving a nuclear receptor. The cell’s nucleus, containing compacted DNA, is centrally positioned within the cell. Could these two isoforms serve disparate functions in T cells?
Allison Berke makes the case for real-time DNA sequencing and AI tools to detect pathogens before they spread widely. Reading DNA The first step in detecting a novel pathogen is recognizing it as an anomaly amidst a noisy background of other material. After copying the DNA to form a big pool, each piece is sequenced.
There are currently no treatments, but researchers from the Whitehead Institute for Biomedical Research and Broad Institute of MIT and Harvard have developed an approach that could one day be used to turn off the gene encoding this protein throughout the brain to treat or even prevent prion disease.
Goodsell, RCSB Protein Data Bank and Scripps Research. Goodsell, RCSB Protein Data Bank and Scripps Research. 1 Yet even after more than two decades of research, media hype, and dozens of clinical trials and biotech start-ups that have come and gone, phage therapy has not scaled. Read it on our website here.
By Leah Eisenstadt December 13, 2023 Two teams of Broad researchers produced detailed maps of the mouse nervous system. Related news Researchers map brain cell changes in Alzheimer’s disease Courtesy of the Chen and Macosko labs. Courtesy of the Chen and Macosko labs. Our results underscore the need to study them more deeply.”
Borrowed from Bacteria Researchers are using the gene editing tool CRISPR to improve upon naturally-evolved human microbiomes, to build a better probiotic. A recent paper in BioDesign Research , CRISPR-Cas-Based Engineering of Probiotics , from investigators at several Chinese research institutions, contributed to the report.
DNA is a sleek double helix, with “rungs” consisting of a purine base paired with a smaller pyrimidine base: adenine (A) with thymine (T) and guanine (G) with cytosine (C). . ” DNA encodes amino acid sequences comprising proteins, which impart traits. Watson and F.
A little more than a decade ago, researchers began adapting a familiar commercial concept to genomics: the barcode. Instead of the black, printed stripes of the Universal Product Codes (UPCs) that we see on everything from package deliveries to clothing tags, they used short, unique snippets of DNA to label cells.
Genome engineering and gene therapies that manipulate DNA sequences in cells have driven a biotechnological revolution over the past decade. 1 Adeno-associated virus (AAV) vectors are the leading platform for in vivo gene delivery for the treatment of various human diseases.
Please summarise Eterna Therapeutics’ ($ERNA) new research at ASGCT on a cell therapy approach that integrates multiple cell types to emulate the natural immune system’s fight against diseases? Those kinds of mutations are often associated with double-strand breaks in DNA.
Among the report’s authors are 16 members of national academies, two Nobel Laureates, and several researchers who have previously been frontrunners in the quest to create mirrored life. ” 1 Now, it seems, these researchers have changed their minds. It would also be undetectable by key parts of the human immune system.
Nucleic Acids Research. Digital nanoreactors to control absolute stoichiometry and spatiotemporal behavior of DNA receptors within lipid bilayers. CRISPR-induced DNA reorganization for multiplexed nucleic acid detection. Nucleic Acids Research. Nucleic Acids Research. Nucleic Acids Research. Krypotou E.
During the process of transformation from a normal cell into a cancer cell, a cell acquires a series of changes, or mutations, in its DNA. But DNA mutations can also result in changes to the proteins that are displayed on the surface of the cancer cell. Our immune system helps us to fight off infections and cancer.
When Crichton died of cancer in 2008, he left behind a staggering trove of research about an eruption of Mauna Loa on the Big Island of Hawaii. ” The explanation continues, and here’s where it ceases to make sense, to anyone who knows anything about DNA, genes, and genomes. The DNA double helix is exquisitely symmetrical.
mRNA was the intermediate stage between DNA and protein, a dynamic entity that shifted depending on the second-to-second needs of the cell, able to point out if a cell was cancerous or stressed, what kind of cell it was, and so on. The lab created a plan with eight research institutions across three continents.
However, they plod along as they clone plasmids—the loops of DNA that biologists use to manipulate and study organisms—because propagating them relies, in part, on the pace at which cells grow and divide. Due to the nearly ubiquitous use of cloning in life science research, this lost time adds up. However, E.
Infectious agents’ resistance was described at the European Union Research Parliament “as a widespread, multifaceted phenomenon that affects both living things and the environment, as well as their capacity to survive in the presence of drugs intended to either kill or inactivate them.”
Researchers from the Broad Institute of MIT and Harvard and MIT have engineered a new mRNA structure by adding multiple “tails” to the molecules that boosted mRNA activity levels in cells by 5 to 20 times. “The This research has given us a lot of confidence in our ability to modify mRNA molecules chemically and topologically.” “I’m
And unlike traditional DNA sequencers, which parse genetic material by breaking it up into fragments and interpreting it chunk-by-chunk, a nanopore device unspools a long strand of DNA and reads it all at once. A scientist can isolate DNA and load up a flow cell in fifteen minutes. Nanopore devices work incredibly fast.
Each T cell expresses a TCR specific for an HLA‑presented peptide signal, and when that signal is detected a T cell expressing the relevant TCR can launch a complex array of immune effector responses that can suppress or destroy tumours or virus-infected cells.
Researchers at Heidelberg University in Germany performed detailed imaging analysis to determine how SARS-CoV-2, the virus that causes COVID-19, reprograms infected cells. The virus causes changes in the membrane so it can produce its own replication organelles, amplifying the viral genome. How COVID-19 Hijacks the Host Cell.
As genetics morphed into genomics, artificial intelligence stepped in, layering the combinatorial information of comparative genomics onto DNA sequences. Genetics Textbooks and Generative Artificial Intelligence Genetic research unfurls and extracts reams of information, millions and even billions of data points. Then, a year off.
This trend came to the forefront during the COVID-19 pandemic, as the three most popular vaccines developed in response to the coronavirus contained engineered genetic materials in the form of mRNA or a genetically engineered virus. Either way, occupational exposure to these gene delivery systems bears potential risks to the research staff.
What are the potential implications of the research findings for cancer risk assessment, prevention strategies, and treatment approaches? He was a postdoctoral research fellow in the Timothy Chan Lab at Memorial Sloan Kettering Cancer Center.
This approach can be personalized for each patient by sequencing the tumor's DNA and RNA to identify unique mutations. By combining mRNA therapeutics with other modalities, researchers can achieve synergistic effects that improve treatment outcomes for patients with advanced or resistant cancers.
The virus SARS-CoV-2 emerged in Wuhan, home of a premiere research institute that focuses on viruses. A year before the initial outbreak, Wuhan researchers proposed nurturing a coronavirus with enhanced ability to attach onto, and enter, human cells. An altered virus could have escaped. Her points: 1. Coincidence?
A team led by researchers at the Broad Institute of MIT and Harvard and the McGovern Institute for Brain Research at MIT has discovered and characterized one of these unexplored microbial defense systems. In the new study, the researchers wanted to know if the proteins work the same way in prokaryotes to defend against infection.
His T7 expression technology can be used to make large quantities of nearly any RNA or protein and has been for decades, and continues to be, a mainstay of biomedical research and pharmaceutical production. The motivation for my research is not commercial application. My interest is in basic research."
million DNA bases. The DMD gene therapy delivers a shortened version of the dystrophin gene, just 4,558 DNA bases. First, adeno-associated virus (AAV) delivers the genes, rather than the adenovirus (AV) that had entered cells in Jesse’s liver that weren’t the targets. Two other design strategies add precision.
billion bases of DNA which, if unfurled, would extend for more than 100 meters—taller than the Statue of Liberty. billion bases of DNA, the human genome measures just 2 meters in length when stretched end-to-end. Credit: Oriane Hidalgo Per the book Cell Biology by the Numbers , each base pair of DNA occupies 1 nm 3 of space.
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