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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. Lisa Yang and Hock E.
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. By Sarah C.P. They also delivered prime editors to the mouse brain, and did not detect any off-target editing.
Using a synthetic guide RNA (gRNA), scientists can target a specific DNA sequence and employ Cas9 to cut it. Today, however, we will explore a different application of CRISPR: microbiome engineering… Clustered regularly interspaced short palindromic repeats (CRISPR) was first discovered in the genome of marine bacteria.
Now researchers at the Broad Institute of MIT and Harvard have used cutting-edge continuous laboratory evolution and engineering methods to develop improved versions of the gene-editing tool. Reverse transcriptase proteins that copy RNA templates into strands of DNA are found naturally in all plant and animal cells and in many viruses.
Messenger RNAs with multiple “tails” could lead to more effective therapeutics By Corie Lok March 22, 2024 Breadcrumb Home Messenger RNAs with multiple “tails” could lead to more effective therapeutics Scientists have engineered long lasting mRNAs that increased therapeutic protein production in cells and animals.
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. These drugs would be ideal tools to bridge the wait for a vaccine against a quickly-spreading virus.
By Allessandra DiCorato May 16, 2024 Credit: Deverman lab Brain vasculature (in blue) surrounded by RNA (in orange) transcribed from the gene delivered to the brain in humanized mice using an engineered AAV targeting the human transferrin receptor. This engineered capsid opens up a world of possibilities."
To deliver CHARM throughout the brain, the team collaborated with scientists in the lab of Ben Deverman , senior director of vector engineering at the Broad and a co-author of the study. They used an engineered adeno-associated virus (AAV) that crosses the blood-brain barrier after intravenous administration.
🧪 Papers AI + Bio Protein-specific signal peptides for mammalian vector engineering. Basic Science A trailing ribosome speeds up RNA polymerase at the expense of transcript fidelity via force and allostery. Biological Engineering Generation of functional oocytes from male mice in vitro. Metabolic Engineering.
The use of engineered genetic materials in clinical trials is rapidly expanding, with potential applications for genetic vaccines, gene-modified cellular therapies, and gene therapies. A key part of the IBC’s evaluation is assessing the risks posed by the engineered genetic materials. Why Does the IBC Need to do a Risk Assessment?
But, regardless of which was first, they all operated with the same core data as their mechanism for understanding life: messenger RNA ( mRNA ). On the surface, they hadn't deviated much from the early 2020s: a virus infected a cell and released the genetic therapy hidden within. But the differences racked up the closer one looked.
To treat Ebola virus infections, researchers are taking a close look at a key piece of the virus: polymerase. Polymerase is a viral protein that directs how Ebola virus replicates its genome as it infects new hosts. Drugs that target polymerase could potentially treat Ebola virus infections and save lives.
Using single-cell RNA sequencing to analyze gene expression in individual cells, the researchers have found how 86 major cytokines affect 17 immune cell types in mice. Tags: Cell Circuits Program Immunology RNA sequencing The reference, called the Immune Dictionary , appears today in Nature. Paper cited Cui A et al.
The other study was led by senior authors Xiao Wang , a Broad core institute member, a Merkin Institute Fellow, and an assistant professor of chemistry at MIT, and Jia Liu, an assistant professor of engineering at Harvard University. Related news Researchers map brain cell changes in Alzheimer’s disease Courtesy of the Chen and Macosko labs.
iPSC-derived lymphocytes, eg, T cells and natural killer (NK) cells, engineered to express targeting molecules such as chimeric antigen receptors (CARs) have shown clinical promise to treat haematological malignancies. We believe this lays the groundwork for engineering these kinds of myeloid cells to potentially target any cancer antigen.
Some scientists even think it had a virus defense system; “researchers say LUCA likely housed 19 CRISPR genes, which bacteria use to slice up viral threats,” reports Quanta Magazine. DNA and RNA molecules are also built from exclusively right-handed nucleic acids.
Spectrum’s self-contained saliva collection kit provides critical sample consistency while suspending and neutralizing viral RNA transcripts completely inactivating the live virus. Qualified commercial RNA extraction chemistries include Perkin Elmer, Thermo Fisher, Roche, and Qiagen. This press release features multimedia.
Targeted drug treatment leads tumor cells to imitate viral infection By Ari Navetta July 11, 2024 Breadcrumb Home Targeted drug treatment leads tumor cells to imitate viral infection Exploiting "viral mimicry," mIDH1 inhibitors trick tumors into thinking they are infected with a virus.
Tissue engineering techniques using induced pluripotent stem cells (iPSC), which are differentiated into cardiomyocytes, are being developed to create functional cardiac tissues from patient-derived cells. RNA-based therapies, including mRNA and RNA interference (RNAi), are being explored to modulate gene expression in heart cells.
The virus SARS-CoV-2 emerged in Wuhan, home of a premiere research institute that focuses on viruses. An altered virus could have escaped. Evidence that the virus emerged, or escaped, from the wildlife trade is lacking. Her points: 1. Coincidence? I’ve never thought so. RaTG13 shares about 96.1%
Rice University researchers have introduced an online portal to help researchers screen COVID-19 drug candidates that might attack specific proteins of the SARS-CoV-2 virus. Understanding these structures allows researchers to find binding partners that could, ideally, deactivate the virus.
For example, innate immune peptides being imitated by SARS-CoV-2 fragments have a special ability to organise double stranded RNA into structures that strongly amplify activation of the human innate immune system in autoimmune diseases. Maybe the next pandemic respiratory virus will be an influenza virus rather than a coronavirus.
In the paper, researchers from Johns Hopkins University and elsewhere found a natural long-form transactivating CRISPR RNA (tracr-L) in Streptococcus pyogenes that functions to downregulate its endogenous CRISPR-Cas9 system. But altering the tracr-L with genetic engineering to make it function more like a guide RNA increased CRISPR-Cas9 cuts.
Codon Digest is my weekly roundup of research, news, and industry highlights about engineered biology. An engineered version of this protein can convert DNA bases with efficiencies up to 92%. A particular variant, named IscB*-ωRNA*, had the highest editing efficiency across multiple different sites in the genome.
Codon Digest is my weekly roundup of research, news, and industry highlights about engineered biology. An engineered version of this protein can convert DNA bases with efficiencies up to 92%. A particular variant, named IscB*-ωRNA*, had the highest editing efficiency across multiple different sites in the genome.
Kamal Nahas highlights the biological limits on cell division speed and explores how we might engineer cells to grow faster. coli to clone DNA, engineering this microbe to divide more quickly would greatly accelerate research. Proteins are colored blue and RNA molecules are colored orange and yellow.
During challenge with the original SARS-CoV-2 virus, animals vaccinated with CV2CoV were found to be better protected based on highly effective clearance of the virus in the lungs and nasal passages. Clearance of the virus in the lungs and nasal passages of the animals was tested following challenge infection with the original virus.
What are the key findings of Circio’s in vivo proof-of-concept for its circVec circular RNA platform technology compared to conventional mRNA-based expression with DNA vectors? Circular RNA (circRNA) has two major advantages versus mRNA in a vector-expression context.
LanzaTech announced a partnership with H&M Move to convert factory carbon emissions into fabrics using engineered microbes. Small snippets of double-stranded RNA were sprayed onto hot pepper plants to control a pest, called Frankliniella occidentalis. RNA may offer a safer form of pest control in the future. Shrock E.L.
Because I was put into the highest tier, I was automatically mapped to the engineering track. For security reasons, at the time COVID-19 had to be grown in BSL-3 labs, which can be dangerous because they were handling the live virus. These are synthetic, not the live virus, so do not pose a risk of infection.
This is Codon Digest, a weekly roundup of research papers, news articles, and industry highlights about engineered biology. Read Biological Engineering mScarlet3: a brilliant and fast-maturing red fluorescent protein. Thanks for skimming. ❤️ Subscribe to support human writers. Gungabeesoon J. Nature Aging. Nature Methods.
But for a recent paper out of Nanjing, China, researchers engineered another enzyme and showed that, when mixed with FAST-PETase, the two worked together to break down plastic twice as fast as the Texas enzyme alone. Because it turns out that at least half of them , in humans, also bind to RNA molecules. RNA export systems.
But for a recent paper out of Nanjing, China, researchers engineered another enzyme and showed that, when mixed with FAST-PETase, the two worked together to break down plastic twice as fast as the Texas enzyme alone. Because it turns out that at least half of them , in humans, also bind to RNA molecules. RNA export systems.
That’s how easy it’s for SARS-CoV-2, the virus that causes COVID-19, to enter your nose. Anderson Professor of Chemical and Biomolecular Engineering, and his colleagues, are reporting in iScience the event of an intranasal subunit vaccine that gives durable local immunity against inhaled pathogens. Breathe in, exhale.
Their solution was to fuse hairpins, little loops made from RNA or DNA, at various positions along the DNA strand that was being sequenced. 3 Nanopore engineers decided to cleverly exploit the natural speed limit of DNA polymerase to slow down DNA translocation through the pores. 3 This speed varies depending on the organism.
Two viral proteins elicited an immune response: the portal, a part of the virus’s capsid shell, which contains viral DNA; and the terminase, the molecular motor that helps assemble the virus by pushing the viral DNA into the capsid. These bacterial proteins were instead directly sensing key parts of the virus.
Read more at Nature Biotechnology ( Similar paper at Nature Biomedical Engineering.) But now, their engineered brethren can live about 82 percent longer. Often, when we engineer a cell, we only mess with the magnitude of an effect; this study suggests that we should think more about the timing, too. From Zhang et al.
Read more at Nature Biotechnology ( Similar paper at Nature Biomedical Engineering.) But now, their engineered brethren can live about 82 percent longer. Often, when we engineer a cell, we only mess with the magnitude of an effect; this study suggests that we should think more about the timing, too. From Zhang et al.
In the study, immunization with the hAd5-COVID-19 vaccine inhibited SARS-CoV-2 virus replication in 100% (10 of 10) of Rhesus macaques, with a drop in viral replication starting on the first day of vaccine administration, and undetectable viral levels as early as three to five days post-challenge in most of the animals.
The company’s suite of market-leading molecular profiling offerings assesses DNA, RNA and proteins to reveal a molecular blueprint that helps physicians and cancer patients make more precise and personalized treatment decisions.
As research developments into RNA vaccines help scientists accelerate drug candidates to arm the immune system against coronavirus, Pharma IQ ’s Keeping tabs on Covid-19 update returns with news from some of the biotechnology innovators leading the fight against the global pandemic.
Made from a Cas9 nickase (the histidine at amino acid position 840 is swapped for an alanine) fused to a reverse transcriptase enzyme (which makes DNA from RNA; transcription in reverse), prime editing clinical trials are expected to begin by 2025. link ) *New base editors can engineer both mitochondrial and nuclear DNA. EMBO Reports.
Made from a Cas9 nickase (the histidine at amino acid position 840 is swapped for an alanine) fused to a reverse transcriptase enzyme (which makes DNA from RNA; transcription in reverse), prime editing clinical trials are expected to begin by 2025. link ) *New base editors can engineer both mitochondrial and nuclear DNA. EMBO Reports.
Galidesivir is a broad-spectrum antiviral, an adenosine nucleoside analog that blocks viral RNA polymerase. STP705 is a small interfering RNA (siRNA) therapy that leverages a dual-targeted inhibitory property and polypeptide nanoparticle (PNP)-enhanced delivery to knock down both TGF-beta1 and COX-2 gene expression.
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