Articles tagged with Rna
A new AI model, SpliceSelectNet, accurately predicts RNA splicing by capturing long-range DNA signals. The model's hierarchical Transformer architecture preserves high computational efficiency while maintaining single-nucleotide resolution, enabling accurate analysis of genomic regions.
Scripps Research scientists captured high-resolution structural images of human Argonaute 2 in its cutting-ready state, identifying precise atomic interactions that determine when and where the machinery cuts. The structures reveal key amino acids driving the cutting reaction, including Lysine709 and Arginine710.
Scientists from the University of Osaka have identified a previously unknown molecular mechanism linking mitochondrial morphology to innate immune activation. Abnormally long mitochondria can trigger the release of mitochondrial RNA into the cytosol, activating RNA-sensing proteins and leading to anti-tumor immunity.
Researchers at University of California San Diego have developed a large-scale screening approach that identifies proteins controlling alternative polyadenylation (APA), a fundamental step in gene expression. The study reveals 63 high-confidence activators of poly(A) site usage, including seven new regulators previously unknown.
Researchers have uncovered the structural basis of Argonaute assembly, revealing that chaperone proteins hold it in an open conformation allowing miRNA loading. The study also found that RNA plays a key role in guiding Argonaute folding.
Researchers identified a promising new strategy for reversing autism-related brain deficits by targeting a specific glycine transporter. The therapy restored NMDA receptor function in mouse models and human brain organoids, improving behavioral abnormalities such as social interaction and repetitive behaviors.
A new study reveals that IS110 elements use two RNA-guided pathways to insert donor DNA into target sites, challenging the classical 'cut-out-paste-in' model. The researchers identified a figure-eight DNA intermediate in one pathway and a direct-transfer pathway without forming a conventional intermediate.
Researchers at the University of São Paulo have developed nanoparticles that deliver therapeutic RNA molecules directly to skin cells, silencing genes responsible for chronic inflammation. This precision nanomedicine approach holds promise for treating complex diseases like psoriasis and vitiligo.
Researchers have discovered a previously underappreciated mechanism that helps immune cells respond rapidly to infections by altering RNA splicing. This study provides new insights into immune-mediated diseases such as rheumatoid arthritis and lupus, and may lead to more targeted therapies.
Researchers used RNA therapy to target a genetic mutation causing heart failure, reducing protein aggregation and improving cellular abnormalities. The study provides insight into the biological mechanisms underlying treatment response and may accelerate the development of personalized treatments for genetic heart disease.
Researchers developed a technique that uses RNA origami to analyze sections of RNA, allowing for accurate sizing of repeat expansions in genetic disorders. The method shows promise for fast and affordable testing in clinical settings.
Researchers developed a new tool, RNAanalyzer 3, to analyze RNA structures and motifs. The tool uses large databases and combines structure and context to make accurate predictions, enabling researchers to study RNA's role in various biological processes.
Researchers developed an AI-driven framework, HELIX, to predict RNA splicing and isoform usage with high accuracy. The framework integrates genomic sequence features with tissue-specific RBP expression profiles and outperforms existing methods in predicting splicing strength and isoform usage.
Researchers from the University of Waterloo have identified four more members of Sir John Franklin's 1845 expedition using DNA samples extracted from skeletal remains. The new discoveries bring the total number of identified sailors to six, providing previously unavailable details about the circumstances and locations of their deaths.
Dr. Dilek Colak's journey began with a childhood observation of a boy with mental illness, which inspired her to pursue a career in neuroscience. Her current work focuses on understanding autism and schizophrenia through the study of human brain organoids.
Researchers suggest treatment could start during pregnancy to prevent brain damage and reduce neurological harm. A new RNA-based therapy reduces abnormal electrical currents in patient-derived excitatory neurons.
Researchers studying RNA pollution's impact on aging brains seek to develop therapeutic strategies for neurodegenerative diseases like Alzheimer's. Sanford Burnham Prebys scientist Anne Bang will use advanced robotics to test thousands of compounds.
Researchers at MIT discovered that gene circuits can reshape DNA folding and affect gene expression in human cells. The study found that rearranging genes along a DNA strand, or 'gene syntax,' can amplify or suppress the expression of neighboring genes.
Researchers used cryo-electron microscopy to visualize individual water molecules and metal ions within RNA polymerase II, revealing their active role in DNA transcription. The study provides a new understanding of how genetic information is read and expressed, challenging the traditional 'protein-centered' view.
Researchers have developed a new method to build programmable artificial organelles inside living cells using RNA, enabling customization of cellular compartments and tunable properties. This approach may lead to specialized biological functions for nanomedicine and gene engineering.
Scientists have uncovered an unexpected way cancer cells generate cancer-driving proteins by cutting RNA into shorter fragments. This process, termed as RNA dicing, enables the production of a truncated form of the JAK1 protein that remains highly active and can promote tumor growth.
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.
The researchers will investigate novel therapies to protect the aging brain from neurodegenerative diseases by eliminating RNA pollution. They will map out signatures of RNA pollution across over 200 cell lines and patient biofluids to understand its effects.
Researchers at WashU Medicine discovered that mRNA vaccines can trigger strong anti-tumor responses even without certain immune cell subtypes, suggesting a novel pathway for cancer treatment. The study found that both cDC1 and cDC2 dendritic cells play a role in stimulating T-cell responses.
A team of scientists from NTU Singapore has developed a new biochip that, when paired with Artificial Intelligence (AI), can detect quickly and accurately extremely small amounts of microRNAs. The device can cut detection time from hours to 20 minutes.
A community-based point-of-care HCV RNA testing program was feasible and led to a high percentage of same-day treatment for American Indian and Alaska Native participants. The study supports expanding point-of-care HCV RNA testing and integrated treatment to advance HCV elimination.
A new analytical method allows scientists to track exactly where a cancer drug accumulates inside a living cell, enabling more precise treatment design. This breakthrough uses subcellular capillary sampling and laser ablation – Inductively coupled plasma – Mass spectrometry to detect trace amounts of metal in individual cells.
Researchers developed a nasal spray that reversibly reduces brain inflammation, restores cellular power plants, and improves memory. The treatment bypasses the brain's protective shield through intranasal delivery, suppressing chronic inflammation and promoting successful brain aging.
Researchers found that an extra copy of chromosome 21 leads to increased levels of the ADARB1 enzyme, causing premature and excessive RNA editing in developing brain cells. This dysregulation affects how brain cells communicate and form circuits, potentially influencing neurological and behavioral outcomes in Down syndrome.
A research team discovered that a protein complex consisting of SMG1, SMG8, and SMG9 ensures the efficient execution of nonsense-mediated mRNA decay (NMD). The study found that this complex is essential for maintaining the stability of NMD under various conditions.
Researchers at UC Irvine have identified LENG8 as a crucial regulator of RNA quality control, enabling cells to retain or degrade specific RNAs. This discovery sheds light on the mechanisms underlying cellular processes such as gene expression and translation.
Researchers at the University of Pennsylvania developed lipid nanoparticles that modify immune metabolism to strengthen mRNA vaccines and reduce common side effects. The new lipid boosts the metabolism of immune cells, providing energy for the body's defenses while dialing down inflammatory signals.
Researchers discovered that PFK, a key sugar-processing enzyme, has a hidden function controlling cell division by unwinding RNA and promoting gene translation. The enzyme's ability to bind and unwind RNA was found to be crucial for cell cycle progression, with cells lacking PFK2 showing slowed growth and division issues.
A new RNA therapy has been developed to enhance the heart's own ability to protect and repair itself after a heart attack. The therapy, which involves injecting particles into the arm, significantly reduced scarring and improved heart function in lab experiments, offering a potential breakthrough for heart patients.
Researchers mapped GLP-1 expression in 25 brain regions in each sex, uncovering striking differences in key circuits. The atlas reveals sex-biased expression in certain medullary nuclei, with higher Glp1 densities and numbers of Glp1-expressing neurons in females compared to males.
Researchers have synthesized long noncoding RNA molecules with anti-inflammatory properties, demonstrating a new paradigm in drug discovery. The team identified three lncRNA sequences that regulate inflammation and used them to create nanoparticles that reduced inflammation in human cell cultures and mice.
Researchers have identified a crucial mechanism behind nonsense-mediated mRNA decay (NMD), which removes faulty transcripts to prevent incomplete protein production. The study reveals that the SMG5 and SMG6 proteins interact directly, forming an endonuclease that cuts through RNA in a targeted manner.
Researchers at UAlbany are developing a new technique using Raman spectroscopy to ensure mRNA is properly encapsulated in lipid nanoparticles, improving the safety and effectiveness of mRNA vaccines and therapeutics. The technique allows for instantaneous analysis without damaging the sample, enabling optimization of formulations.
Researchers identify nonsense-mediated mRNA decay (NMD) as a central mediator of neuronal migration and cortical lamination. The study reveals that UPF2, a core component of NMD machinery, is essential for proper neuron migration and brain development.
MIT neuroscientists have found that two genetic mutations causing Rett syndrome compromise the structural integrity of developing blood vessels, leading to leaky vessels. Overexpression of miRNA-126-3p is responsible for the vascular defect, which can be rescued by reducing the miRNA's levels.
Researchers identified nine piRNAs linked to longevity, which could be detected through simple blood tests. The study suggests that these molecules may help predict survival and guide therapeutic targets for older adults.
A study profiles mitochondrial circular RNAs in Peripheral Blood Mononuclear Cells from young and old human cohorts, revealing that circMT-RNR2 levels are depleted in older cohorts and are involved in promoting the TCA cycle. Loss of GRSF1 reduces circMT-RNR2 levels, decreasing mitochondrial TCA intermediates and accelerating cellular ...
Researchers at the Max Planck Institute for Brain Research discovered that stressed animal cells, including neurons, assemble inactive ribosomes into tightly linked pairs, known as disomes. This novel mechanism relies on a specific piece of ribosomal RNA called an expansion segment to form a precise RNA-RNA interaction.
Scientists have developed a technology that reveals which proteins are generated by individual brain cells. They mapped protein production across nearly 20,000 individual cells in the mouse hippocampus, finding surprising patterns and potential links to neurological conditions. The study sheds light on how translation affects memory ci...
Research reveals that nuclear speckles are essential for processing and exporting viral messenger RNAs from the nucleus, highlighting their critical role in viral infections. The study suggests that understanding how viruses interact with host cells can lead to new ways to treat and prevent viral diseases.
A research team has developed a 'SUPER' platform that utilizes synthetic small RNAs as add-on controllers for genetic switches. This technology enhances the performance and stability of gene regulatory devices by addressing the issue of 'leakage', where genes continue to express at low levels even in the 'OFF' state.
Scientists have identified a previously unknown molecular mechanism for initiating gene transcription in cells under stress. Using cryogenic electron microscopy, they observed how dinucleoside polyphosphate molecules bind to RNA polymerase, enabling the formation of alternative caps that protect cellular RNA.
New diagnostic methods aim to detect RNA viruses with high sensitivity and specificity, overcoming the challenge of rapid evolutionary dynamics. The techniques include mutation-tolerant screening and precise mutation discrimination.
Researchers found a progressive shift in RNA contents of sperm with age, potentially contributing to health risks of having kids later in life. The discovery may lead to improved fertility outcomes and diagnostic tools.
A study in mice found that paternal immune activation affects small RNAs in sperm, leading to changes in offspring phenotypes such as increased body size and impaired insulin sensitivity. The findings suggest a potential mechanism for intergenerational transmission of health disorders.
Flinders University researchers discovered a biological process that could explain some stillbirths and pave the way for early detection. The study found that molecules called circular RNAs build up in the placenta too quickly during pregnancy, compromising its ability to nourish the baby.
Researchers developed RNACOREX, a new open-source software tool that identifies gene regulation networks in cancer. The tool analyzes thousands of molecules simultaneously to detect key interactions, providing an interpretable molecular map that improves understanding of tumors.
Researchers discovered a tiny RNA molecule called PreS that helps viruses copy their DNA more efficiently and boost replication in bacterial cells. This discovery provides important insights for designing smarter phage-based therapies against antibiotic-resistant infections.
Researchers at IIT identified a candidate molecule called Apt1 that enhances existing anticancer therapies by making tumour cells more vulnerable to chemotherapy drugs. The molecule slows DNA repair and impairs the interaction between RAD51 and BRCA2 proteins, inducing synthetic lethality in cancerous cells.
Researchers at UMass Amherst have developed a unique tool for studying RNA, allowing them to observe its behavior inside live cells. The three-color method uses glowing proteins that target specific parts of the RNA molecule, providing valuable insights into RNA's functions and how they impact cellular health.
Researchers found that two proteins in the CCR4-NOT complex have opposing roles in controlling genetic messages, with one destabilizing and the other steadying mRNA. This balance is critical to gene regulation and understanding cellular differentiation, adaptation to environmental stimuli, and disease mechanisms.
Researchers have discovered a small RNA molecule that plays a key role in controlling cholesterol production and the development of heart disease. The molecule, tsRNA-Glu-CTC, was found to boost SREBP2 activity, leading to higher cholesterol levels and increased risk of atherosclerosis.