Articles tagged with Dna Sequences
AI researchers have developed a method to train neural networks to predict the function of DNA sequences, allowing for deciphering larger patterns. This breakthrough enables analysis of complex DNA sequences critical to development and disease, potentially improving understanding of gene regulation and its impact on diseases.
A synthetic probe offers a safe approach for visualizing chromosome tips in living cells. The probe can precisely deliver a fluorescent compound to telomeres on the tips of chromosomes, enabling researchers to understand their relevance to disease and aging. This breakthrough advances research into aging and diseases like cancer.
This study uses sedimentary DNA to track the abundance of three major fish species over 300 years, providing a new tool for evaluating evolution and responses to climate changes. The results suggest that sedimentary DNA concentrations can reflect the abundance of aquatic species, enabling long-term monitoring efforts.
Researchers reconstructed the ancestral great ape Y chromosome, showing rapid evolution in bonobo and chimpanzee. The study found accelerated rates of DNA sequence change and gene loss, suggesting mating habits may have driven this evolution.
Researchers at Arizona State University are exploring DNA-based storage technologies that can store and retrieve information securely. The project aims to create microscopic forms with encryption capabilities rivaling silicon-based semiconductor memories.
A team of researchers at KIT demonstrated that DNA damage can occur up to 30 DNA building blocks away from the entry point of UV radiation. This finding has significant implications for understanding DNA photodamage and its role in skin cancer.
Researchers developed a new tool to guide scientists in choosing the best CRISPR enzyme for their high-stakes gene edits, making the technology safer, cheaper and more efficient. The tool helps identify where mistakes are most likely to occur for each enzyme, saving time and reducing risk.
A Politecnico di Milano study reveals that DNA shape is determined by precise rules governing CTCF protein sequences. This discovery opens doors to engineering DNA structure for pharmaceuticals, treating diseases like cancer.
Researchers propose using repetitive DNA sequences, known as flipons, to create logic circuits and perform calculations. These sequences can form different DNA structures, enabling the creation of genetic programs that can be used to overcome environmental challenges.
Researchers create Y-shaped DNA nanostructures that can fuse exclusively with similar ones, demonstrating controllability of liquid-liquid phase separation. The team also constructs a special DNA structure to bridge incompatible motifs, allowing for the creation of Janus-shaped droplets with localized cargo molecules.
A study by IBS researchers compared 13 SpCas9 variants and identified optimal PAM sequences, finding evoCas9 has highest specificity but low activity. A computational tool, DeepSpCas9variants, was developed to predict SpCas9 variant activities, providing a useful guide for researchers.
A new machine learning model, BE-Hive, accurately predicts the outcomes of using different base editors to correct genetic mutations. The model discovered new properties and capabilities of base editors, allowing researchers to design novel tools with improved efficiency.
Researchers at NC State University developed DORIS, a new approach to DNA data storage that enables users to read or modify files without destroying them. This allows for increased information density and easier scalability.
Researchers developed a synthetic microbial system to determine the location of origin for objects, using DNA-barcoded spores that can be sprayed onto goods and detected months later. This approach helps determine the source of foodborne illnesses, which affect millions in the US annually.
The study focuses on flipons, DNA sequences that act as on-off switches to change genetic information. Flipons enable the compilation of multiple messages from a single genomic sequence, generating more diversity than mutation or DNA rearrangements.
Scientists from the University of Illinois at Urbana-Champaign developed a new CRISPR gene-editing methodology that inactivated a key gene responsible for ALS, slowing disease progression and improving muscle function. The treatment also increased overall survival in mice with aggressive forms of ALS.
Researchers at Penn Medicine discovered that changes in DNA sequence can trigger chromatin misfolding in white blood cells, increasing the risk of developing Type 1 diabetes. The study found that these misfolded regions occur before the disease onset and may serve as a diagnostic tool.
Researchers found that prion proteins form liquid droplets modulated by DNA sequences, turning into solid and toxic states. These structures are related to Creutzfeldt-Jakob disease and other spongiform encephalopathies.
A study published in Nucleic Acids Research reveals that transposable elements have been co-opted by hosts to provide useful functions, such as encoding part of a host protein. The research found tens of thousands of potentially co-opted TE sequences, which are more conserved across species and suggest a key role in mammalian evolution.
Researchers at the University of Washington found GEDmatch vulnerable to multiple security risks, including extracting sensitive genetic markers and impersonating relatives with fake profiles.
A recent study analyzed over 4.7 million mtDNA sequences from GenBank and found fewer errors than predicted, with less than 1% of sequences mislabeled. The researchers identified potential sources of error, such as human or lab animal contamination, but overall found GenBank to be a reliable tool for environmental DNA identification.
Researchers optimized DNA-PAINT for faster image acquisition using orthogonal DNA sequences, achieving sub-10nm spatial resolution and multiplexing capabilities. This improvement allows for biomedically relevant high-throughput studies, such as diagnostic applications.
Wake Forest Institute for Regenerative Medicine scientists have developed a faster and more efficient gene editing tool using the CRISPR/Cas9 system. The new delivery system packages both essential components together, enabling transient Cas9 expression and avoiding unwanted results.
Researchers have created a new method for imaging biological molecules in cells or tissue samples using DNA snippets, allowing for the study of molecule abundance and distribution. The 'DNA microscopy' approach enables rapid screening and analysis of specific molecules within larger materials.
Scientists have captured atomic-level images of active CRISPR enzyme Cas9, providing new structural information on its mechanism. The images show how the enzyme cuts DNA strands and reveals the importance of domain movement during reaction, which could lead to improved genome-editing tools.
A new study reveals that lichens, organisms made of fungi and algae, seized the opportunity to evolve and diversify rapidly after the mass extinction event that wiped out the dinosaurs. The research found that some lichens grew sophisticated structures similar to plant leaves, filling the niches left vacant by extinct plants.
Researchers at Harvard Medical School have developed a new method for determining 3D protein structures from lab-designed DNA sequences. By assessing the effects of genetic mutations on protein functions, they were able to identify functional interactions within DNA sequences and construct 3D structures that closely mimicked those deri...
Scientists explore the emergence of novel genes and functional proteins from random DNA sequences, revealing peptides that confer high resistance to aminoglycosides. The study demonstrates how de novo evolution can be studied experimentally in the laboratory.
Scientists have found that sponges can collect and filter DNA from fish, seal, and penguin DNA in the water they filter, making them an ideal sampling unit for monitoring biodiversity. This method uses sponge tissue as a natural sampler, reducing processing time and risk of contamination.
Researchers have identified a genetic variant influencing the age of onset in Huntington disease, beyond just the length of the expansion mutation. This new predictor may enable families with additional information and improve disease management by providing genetic counsellors with valuable data.
Researchers have characterized extensive structural variants in three family trios, uncovering 818,054 small insertions and deletions and 27,622 SVs per genome. Many of these variations are missed by routine sequencing technologies, revealing a vast genetic repertoire that can inform new disease associations and diagnostic methods.
Biomedical engineers at Duke University developed a method to improve CRISPR accuracy by adding a short tail to the guide RNA, creating a 'lock' that prevents off-target activity. The approach increases accuracy by an average of 50-fold across five different CRISPR systems.
A DNA barcoding study has identified a group of cryptic species among the Warszewitsch's frog, found in Costa Rica and Panama. This finding highlights the need for modern DNA tools to study rapidly declining animal groups like amphibians.
Scientists discover a simple mechanism that allows prebiotic information-bearing DNA sequences to outcompete shorter molecules, enabling the survival and transmission of genetic information. Templated ligation promotes cooperation among complementary sequences, creating stable majorities through intermolecular assembly and replication.
Researchers found that two specific genes, SPR and BCO2, are responsible for yellow and orange/red pigmentation in wall lizards. These genes also affect behavior, size, fighting ability, and reproductive strategies, with different-colored individuals preferring mates of their own color.
Scientists found that Arctic cod developed their antifreeze gene by assembling tiny fragments of noncoding DNA, which were later duplicated and edited to create a functional protein. The study reveals an unexpected mechanism for the evolution of new genes.
Researchers have identified specific points along the DNA molecule that control replication, shedding light on a decades-old mystery. This discovery could lead to breakthroughs in understanding genetic diseases where replication timing is disrupted.
Researchers from UNIGE developed an AI-based approach combining genomics and machine learning to analyze microbial biodiversity and diagnose ecosystem health on a large scale. The method uses genomic tools to sequence DNA of microorganisms, then builds predictive models to identify species performing key functions.
A new machine learning predictive tool, FORECasT, enables scientists to predict the exact mutations resulting from CRISPR-Cas9 gene editing, saving time and resources. The tool was developed using a massive dataset of 40,000 DNA sequences and analysis of over 1 billion DNA sequences.
Researchers at IBS discover sequence-dependent information influences liquid-liquid phase separation. Single-stranded DNA forms droplets easily, while double-stranded DNA requires specific conditions due to its rigid structure.
A team of researchers has discovered a novel protein called Phaser that neatly arranges nucleosomes in the fruit fly genome. This finding sheds new light on how gene regulation is controlled, and could have important implications for our understanding of human disease.
A new study estimates that up to a quarter of the microbes on Earth could be uncultured and dominate nearly all environments except the human body. The research, led by Karen Lloyd, used computational power to analyze 1.5 million DNA sequences and found that as many as 30 phyla of unseen microbes exist.
The study reveals geographical patterns in epigenetic changes between 100 landraces of wheat, suggesting that these changes have arisen due to environmental conditions. This discovery provides breeders with a new tool to improve how plants respond to local conditions, enabling farmers to grow the best possible crop for their environment.
A recent study demonstrates the feasibility of producing high-quality DNA sequence data at a laboratory in Indonesia. The research shows that molecular techniques like DNA extraction and PCR can be done using relatively simple methods and inexpensive reagents.
Researchers discovered that the Fanconi anemia DNA repair pathway plays a crucial role in fixing CRISPR breaks and increasing the efficiency of homology-directed repair. This new understanding could help boost CRISPR-Cas9 editing's success rates, particularly for treating diseases like sickle cell anemia.
Researchers at Osaka University have successfully developed a new method for cancer diagnostics that uses single-molecule sequencing to investigate fluid dynamics of DNA molecules in solution. This method enables the detection of subtle differences in DNA sequences, allowing for more accurate diagnosis and treatment of cancer.
Researchers at Linköping University found a common mistake in the DIP-seq method that can cause misleading results. This error affects up to 90% of detected DNA regions, highlighting the importance of experimental validation in high-throughput technologies.
Researchers have developed a new way to synthesize DNA sequences using enzymes, promising to accelerate the pace of science. The innovative approach uses TdT enzyme to add nucleotides in a controlled manner, eliminating drawbacks of existing methods and enabling faster, cheaper and more accurate synthesis.
Researchers at LMU München have developed a synthetic DNA sequence that can inhibit the activities of several DNA-processing enzymes, including HIV integrase. The artificial DNA mimic successfully competes with its natural counterpart, demonstrating potential for new treatments of retroviral diseases.
Researchers have developed a safer and more specific CRISPR/Cas9 system to treat Huntington's disease, a neurodegenerative disorder caused by a defective gene. The new technique successfully inactivates the mutant gene and reduces toxic protein synthesis, offering hope for a potential cure.
A new telomere length test has been shown to alter treatment decisions for patients with certain types of bone marrow failure. The test can help identify people at increased risk for developing diseases associated with short telomeres, such as lung scarring and other cancers.
A new study by Dr. Maria Kuzmina provides a vast DNA barcode library for the Canadian flora, covering 98% of vascular plant species, using herbarium specimens. The scale of sampling and quality of curation lend the library taxonomic authority, offering a valuable resource for modern plant sciences.
A team of MGH researchers has identified a genetic change that may cause the rare neurological disorder XDP, which combines features of dystonia and Parkinson's disease. The discovery reveals that a DNA sequence change, including an insertion of a retrotransposon, is correlated with the age of onset for the disease.
The evolving nature of biotechnology introduces new cyberbiosecurity risks, including accidental breaches and intentional threats. The authors recommend employee training, systematic analyses, and new policies to prevent and detect security incidents.
Researchers develop a model explaining how DNA sequences affect nucleosome accessibility for gene expression, bridging the gap between mechanical and chemical information in DNA molecules. The study reveals specific base pair sequences that enable packaged DNA to unwind and 'breathe', allowing genes to be read.
Researchers have developed a streamlined method and 'rules' to enhance the use of CRISPR technology, improving genome editing consistency and efficiency. The new guidelines focus on optimal donor DNA design and homology arm lengths, allowing for longer sequences to be inserted into the genome.
Researchers at Harvard's Wyss Institute have developed a method to autonomously grow synthetic DNA strands, enabling the creation of programmable molecular devices. The 'Primer Exchange Reaction' (PER) cascades allow for diverse functions such as self-building DNA-origami and sensing environmental signals.
Researchers at Uppsala University discovered how CRISPR-Cas9 finds its target sequence in the genome, taking around six hours to search a bacterium's four million base pairs. To improve speed and reliability, they found that sacrificing Cas9's flexibility can lead to faster, but still versatile genetic scissors.
Researchers are developing next-generation computational and bioinformatics tools to quickly assess the risk of synthesized DNA strands posing a threat. Mihai Pop and Todd Treangen are working with Fraunhofer and Signature Science to create a bioinformatics analysis pipeline for identifying potential biological threats.
Researchers at Johns Hopkins University have developed a new method to induce shape-changing in water-based gels using DNA molecules. By employing specific DNA sequences called 'hairpins,' they can cause a hydrogel sample to swell up to 100 times its original volume, and then halt the reaction with another DNA sequence.