Articles tagged with Viral Rna
A novel circular RNA replicon was identified in a high-temperature hot spring ecosystem, showing profound divergence from previously known circular RNAs. The discovery reveals diverse self-replicating RNAs exist even in extreme environments, broadening the ecological scope of RNA-based replication systems.
Researchers discovered a subcellular environment within the giant virus Acanthamoeba polyphaga mimivirus that enables efficient translation of viral mRNAs despite mismatched codon usage with its host. This specialized environment alleviates the unfavorable translation condition, allowing for optimal viral replication.
A study from UMBC reveals a conserved RNA-protein interaction as a promising target for broad-spectrum enterovirus antivirals. The researchers found that a fusion protein called 3CD recruits proteins to assemble the replication complex, and targeting this interface could lead to universal drugs.
Salk Institute researchers have determined the structure of HIV's integrase protein during its newly discovered function, enabling the development of better HIV therapeutics. The study reveals a surprising flexibility in the protein's architecture, which can interact with both DNA and RNA, paving the way for new integrase-targeting drugs.
Researchers at The Wertheim UF Scripps Institute have identified a potential new drug against COVID-19 and developed a powerful new platform for finding medicines to fight many types of infectious diseases. Their approach uses systematic chemistry, computational, and robotic methods to find compounds that can target RNA-based viruses.
Research by University of California, Riverside physicist Roya Zandi reveals how viruses form highly symmetrical icosahedral structures around their genomes through a process of self-correction, driven by protein elasticity. This study could lead to designing synthetic nanocontainers for medical and biotech uses.
Researchers discovered that our bodies add sugars to RNA, shielding it from the immune system. This 'sugarcoating' prevents inflammation and helps clean up dead cells.
Scientists have identified a previously unknown virus in Pacific oysters linked to annual mass die-offs, highlighting the importance of disease prevention measures. The discovery also underscores the need for further research into the causes of mortality in oyster populations.
This study explored the immune dynamics across different phases of HBV infection, identifying key factors influencing T cell function and liver priming. The research team uncovered distinct types of intrahepatic T lymphocytes and dual roles of DC-SIGN+ macrophages in modulating immune responses.
A study estimated the epidemiology of hepatitis D virus (HDV) in China, finding a prevalence of HDV antibody positivity among 4,936 patients with chronic HBV infection. The rate was 0.24%, with only one patient having both anti-HDV antibody and HDV RNA positivity.
The National Initiative for RNA Biology and Its Applications (NIRBA) aims to strengthen Singapore's RNA research capabilities, focusing on human health and diverse applications. The program will integrate leading institutions and promote interdisciplinary collaborations to achieve groundbreaking scientific discoveries.
Researchers at Martin-Luther-Universität Halle-Wittenberg have developed a new avenue to combat the Cucumber mosaic virus by directing the plant's natural defences. The RNA-based active agents have shown high efficacy in laboratory experiments, protecting 80-100% of treated plants from infection.
A synthetic retinoic acid-inducible gene I (RIG-I) agonist RNA has been shown to induce innate immune signaling and death of hepatocellular carcinoma cells in vitro. The addition of recombinant interferon-b potentiated this cell death, suggesting a potential new mechanism for treating patients with liver cancer.
Researchers at University of California, Irvine have designed a way to tag RNA with a glowing molecule for real-time tracking. This allows scientists to study how viruses propagate and understand the role of RNA in brain function and memory formation.
Researchers found that cellular RNA molecules help regulate antiviral signaling by activating the MAVS signalosome. This signaling pathway is crucial for coordinating immune responses against virus invasion. The study's findings suggest a potential role for RNA-based therapeutics in combating infections and autoimmune diseases.
Researchers discovered a giant virus, FloV-SA2, that encodes a ribosomal protein called eL40. This protein is crucial for translating genetic information into proteins, the building blocks of life. The study reveals new insights into how viruses interact with host cells and manipulate cellular metabolism.
The researchers have revealed the precise positioning of RNA molecules and their interactions with the protective coat. This breakthrough enables the design of new drug molecules capable of binding to the protein coat, weakening viral RNA and inhibiting influenza virus replication.
A new study discovered how TRIM25, a cellular superhero, finds and binds to viral RNA to activate an immune response. The researchers found that this binding is critical for TRIM25's antiviral activity and its ability to target regions of viral RNA.
Researchers at Nagoya University developed an innovative synthesis technology to produce high-purity, fully chemically synthesized mRNA. This breakthrough cuts down the production time and can be used to address concerns about purity and speed in mRNA vaccine development.
The CRISPR-Cas13 system enables temporary gene expression manipulation without permanent genomic changes, holding promise for treating diseases caused by RNA defects. It has been applied to correct mutations linked to Duchenne muscular dystrophy and can be used to alter splicing events, making it a powerful tool in personalized medicine.
A new study reveals that two specific genes in the RNA interference pathway play a crucial role in preventing virus transmission from parent to progeny in plants. This discovery could lead to healthier crops and potentially reduce the transmission of diseases like Zika from mothers to human children.
A Cornell University-led collaboration has developed a machine learning model that uses cell-free molecular RNA dregs to diagnose pediatric inflammatory conditions, including Kawasaki disease and Multisystem Inflammatory Syndrome in Children. The diagnostic tool accurately determines the patient's condition while monitoring organ health.
Researchers from University of Maryland discovered RNA mechanisms that can lead to more effective and durable RNA-based drug treatments for conditions like high cholesterol, liver diseases, and cancers. The study highlighted the need to consider drug resistance when developing these treatments.
Researchers analyzed virus populations from a chronically infected patient and found that human-derived RNA fragments helped the virus replicate better in cell culture. The incorporation of host RNA into the viral genome may serve as a biomarker for early detection of chronic infections.
Researchers at the University of Toronto discovered a new RNA virus, Apocryptovirus odysseus, associated with severe inflammation in humans infected with Toxoplasma gondii. The virus is found in two hypervirulent strains of the parasite, exacerbating toxoplasmosis disease and triggering an immune response.
A recent study reveals that a cellular process called transfer Ribonucleic acid (tRNA) modification influences the malaria parasite’s ability to develop resistance. This breakthrough discovery could help researchers develop new drugs to combat resistance and better tools for studying RNA modifications.
A new study reveals that a specific RNA chemical modification, m6A, is crucial for HIV-1 virus replication and production. The research found that targeting this modification could lead to the development of new treatments for HIV infection.
A new lab-on-a-chip system combines optofluidics and nanopores to rapidly test for SARS-CoV-2 and Zika viruses with high accuracy. The tool, developed by UC Santa Cruz researchers, can detect viruses at extremely low concentrations and outperform PCR tests in some cases.
Researchers developed a new triplex real-time PCR test to detect the emerging Powassan virus in deer ticks, improving sensitivity and accuracy. The method reduced false negative results, providing assurance that negative test results are true negatives.
Researchers at Martin-Luther-Universität Halle-Wittenberg developed novel RNA- or DNA-based substances that reliably fight off viral infections in plants. The new approach uses antisense oligonucleotides to target specific viral RNA molecules, achieving an impressive up to 90% success rate against a common virus.
Researchers have discovered a novel RNA viral genome from thermoacidophilic microbes in hot springs, revealing a previously overlooked third RNA virus kingdom. The discovery sheds light on the diversity and evolution of RNA viruses and their potential roles in high-temperature environments.
A gene expression atlas has been developed to map the complex cellular and molecular interactions that drive ovulation in mice. The findings reveal a previously unknown layer of selection that determines which follicles will release eggs, and highlight the importance of early differentiation markers for fertility management.
Yiliang Ding's pioneering work on RNA structure and function has led to breakthroughs in plant virus treatment, increasing structural understanding of this crucial molecule. Her award-winning research has the potential to drive scientific innovation in agriculture and human health.
Researchers have found that ultraviolet laser light can degrade coronavirus particles by damaging their genetic material and protein spikes. The study reveals the effectiveness of UVC laser radiation in inactivating SARS-CoV-2, with applications for public disinfection and decontamination.
Researchers at the University of Copenhagen discovered that phages use small RNAs to disarm bacterial CRISPR-Cas immune systems, making them vulnerable to infection. This finding has significant implications for phage therapy and could lead to more specific and controlled CRISPR-Cas treatments.
Researchers at Hokkaido University identified 2-thiouridine as a broad-spectrum antiviral drug candidate targeting ssRNA+ viruses. It inhibits viral replication and increases survival rates in mice models for dengue and COVID-19.
A portable laboratory device can rapidly detect SARS-CoV-2 RNA from environmental surfaces, holding promise for scenarios where access to testing labs is challenging. The device uses a compact centrifuge and PCR technology to provide highly sensitive on-site detection.
Rice University scientists developed a tiny CRISPR-Cas13 system to shred viruses by targeting RNA. The system's unique mechanism and three-dimensional structure were mapped using cryo-electron microscopy, allowing researchers to engineer it for improved precision and specificity.
Researchers found that a subset of HIV-infected cells produce viral RNA and proteins during anti-retroviral therapy, which may impact patients' immune responses. The study suggests that these non-functional viral pieces can stimulate an immune response, potentially leading to inflammation and negative consequences for treated individuals.
The new approach boosts immunity by engineering nanoparticles and antigens to stimulate a stronger immune response. The vaccine induces a strong immune response when delivered intranasally, potentially leading to longer-lasting immunity and reduced costs.
Researchers from Trinity College Dublin have made significant discoveries on how lung cells respond to influenza viruses, identifying two key molecular pathways that trigger the release of cytokines and cell death. These findings hold promise for treating people affected by such viruses.
SARS-CoV-2's nucleocapsid protein (N) uses human body temperature to replicate, binding to RNA motifs at specific spatial folds. The study reveals new functions and potential targets for antiviral drugs.
The Access to Advanced Health Institute has received an $18 million award from the NIH to develop a temperature-stable, single-dose chikungunya RNA vaccine candidate. The vaccine uses innovative RNA platform technology to protect against the virus, which causes debilitating joint and muscle pain in endemic areas.
The study identifies 1,074 semi-extractable RNAs potentially involved in phase-separated membraneless organelles. These RNAs are enriched in repressed heterochromatin regions and act as hubs for RNA-RNA interactions.
Researchers from the University of Copenhagen have solved the mystery of how the Hepatitis C virus evades the human immune system. The virus uses a molecule called FAD as a 'mask', cloaking itself in a form that is already present in cells, making it invisible to the immune system.
A Rensselaer Polytechnic Institute researcher used high hydrostatic pressure to examine conformational dynamics of human tRNA, finding excited states that play a role in both normal function and HIV infection. The study suggests new insights into RNA function and potential targets for therapeutics.
Researchers have identified over 30 previously unknown RNA viruses in sea lice, suggesting they may play a role in controlling sea-lice populations. The viruses' ability to rapidly replicate and weaken their hosts maintains balance in nature.
Researchers identified a single mutation in the hepatitis E virus polymerase that renders sofosbuvir therapy ineffective, resulting in a fivefold loss of efficacy. This discovery provides new insights into the development of future therapies against hepatitis E, which is responsible for 70,000 annual deaths globally.
Researchers discovered fragments of RNA viruses embedded in coral partners' genomes, dating back 160 million years. The discovery provides insights into how corals fight off viral infections and may hold the key to understanding the ecological impact of viruses on reef health.
A team at Penn State has produced high-resolution images of SARS-CoV-2's protease protein and polyprotein complex. The research reveals a consistent order in which the proteins are cleaved, potentially supporting more efficient antiviral drugs.
Researchers successfully delivered stabilized divalent siRNA molecules to animal models that blocked SARS-CoV-2 and prevented infection. The technology is adaptable for other pulmonary diseases such as pulmonary fibrosis and respiratory viruses.
Scientists have discovered potential broad-spectrum antivirals that target multiple families of RNA viruses, which pose a significant threat to future pandemics. The new agents showed promise in preventing and mitigating viral arthritis caused by Chikungunya virus and rescuing cells from harmful effects of other viruses.
A new study reveals that a Cas protein and a membrane protein work together to enhance anti-viral defense in bacteria. The team found that the membrane protein forms a pore-like structure that disrupts energy production and hinders virus replication, effectively 'pulling the plug' on viral infections.
Scientists have created a system that directly targets and degrades the SARS-CoV-2 viral RNA genome, reducing infection in mice. This method could be adapted to fight off many viruses and treat various diseases.
Researchers at MIT have created a vaccine printer that can produce hundreds of vaccine doses in a day, using microneedle patches that can be stored long-term at room temperature. The printer can be deployed anywhere vaccines are needed, providing on-demand vaccine production.
A recent study found that ocean warming triggers dinoRNAV infections in coral colonies, intensified in unhealthy colonies. This is the first empirical evidence of reef-wide dynamics of viruses infecting coral symbionts during heat waves.
A study by Indian Institute of Science researchers found that enhanced recombination in the SARS-CoV-2 Omicron variant resulted in new mutations affecting viral proteins, particularly those involved in host-cell binding. These mutations enabled the virus to evade immune defenses and infect host cells more efficiently.
A team of researchers has developed a sensitive method to detect viral nucleic acids using 'glow-in-the-dark' proteins, achieving high sensitivity and speed for clinical diagnostic tests. The LUNAS assay successfully detected SARS-CoV-2 RNA in under 20 minutes at low concentrations.
The American Society for Biochemistry and Molecular Biology annual meeting will explore cutting-edge approaches in biochemistry and molecular biology. Leading experts will discuss the latest discoveries and advancements in fields such as AI, RNA regulation, and carbohydrates in health and disease.
A new UCI-led study uncovers the role of protein APOBEC3B in protecting lung cells against various types of RNA viruses. The findings provide an understanding of how lung cells protect themselves against RNA viral infection, which could lead to therapies improving health of chronic lung disease patients.