Articles tagged with Dna Sequences
The study found that the Erfurt Jewish community was more genetically diverse than modern-day Ashkenazi Jews, with at least two distinct groups. The research team discovered that the founder event, which makes all Ashkenazi Jews today descendants of a small population, happened before the 14th century.
Researchers at Hokkaido University discovered a novel sex-determination mechanism in the Amami spiny rat, a species lacking the Y chromosome and Sry gene. The mechanism involves the upregulation of Sox9 gene on chromosome 3, induced by a new regulatory element similar to Enh14.
Using an AI, researchers successfully designed synthetic DNA that controls protein production in cells. The technology can speed up the development of vaccines, drugs for severe diseases, and alternative food proteins.
Researchers investigated Aicardi-Goutières syndrome and found that viral RNA recognition drives uncontrolled interferon production. The immune system mistakenly attacks healthy cells due to the failure of safety mechanisms to distinguish between viral and host genetic material.
A Phase Ib clinical trial found that sequential administration of PARP inhibitor olaparib and WEE1 inhibitor adavosertib is safe and well-tolerated, with promising signs of anti-tumor activity in patients with advanced cancers driven by DNA damage response mutations. The combination showed durable responses in patients with resistant c...
A new CRISPR-Cas approach, SpRYgests, allows for precise DNA cleavage at any sequence, expanding the utility of molecular cloning approaches. This innovation simplifies and expedites DNA editing and has potential clinical implications.
The study analyzed DNA methylation in skin tumor samples, revealing correlations between changes in proteins regulating the organism and prognosis. The results identified potential markers of patient survival and suggested a new route for understanding melanoma subtypes.
Researchers at Kyoto University have developed a new method to detect intraspecies genomic diversity, or microdiversity, of uncultivated bacteria. This approach allows for a more comprehensive understanding of microbial ecology and evolution, as previously overlooked variations are now being studied.
A recent study published in Science Advances reveals a correlation between genomic attributes and life history traits in Neoavian birds. The researchers found that generation time and body mass are associated with the length of orthologous microsatellites, transposable elements, and DNA deletions.
A new DNA-based fluorescence technique using single-molecule electron-transfer kinetics can identify point mutations in mRNA, facilitating the diagnosis of gliomas and potentially treating the disease. This breakthrough may lead to real-time cancer diagnostics during surgical biopsies, reducing the need for multiple surgeries.
Researchers at Gladstone Institutes and UCSF have developed a new approach to introduce long DNA sequences into cells with remarkable efficiency. The technology, which uses single-stranded DNA templates, overcomes the limitations of traditional viral vectors and has the potential to make cell therapies faster, better, and less expensive.
Researchers at Gladstone Institutes developed a tool called Retro-Cascorder, which logs a cell's genetic activity for days at a time. This allows scientists to create living biosensors that can record changes to their environment.
A new study from Tel Aviv University found that CRISPR therapeutics can lead to a significant loss of genetic material in treated cells, potentially destabilizing the genome and promoting cancer. The researchers detected up to 10% of cells with lost chromosomes, highlighting the need for extra care when using this technology.
Researchers at Aarhus University have developed an easy and inexpensive method for linking molecules to DNA sequences with desired functions. The method uses sulfonyl azides to introduce various functionalities, avoiding the need for expensive and unstable special phosphoramidites.
A new study explores the characteristics of 36 basic variants of the Holliday junction, a fundamental building block used in DNA nanoforms. The results show that sequences forming the four protruding arms of the junction can enhance or hinder crystallization processes.
Researchers have reconstructed what life was like for some of Earth's earliest organisms using light-capturing proteins in living microbes. The findings could help recognize signs of life on other planets with atmospheres similar to ancient Earth.
A conceptual species 'stock market' aims to assign economic value to species and ecosystems, promoting sustainability and biodiversity conservation. The SSM would enable the valuation of ecosystem services and actions that harm or benefit biodiversity, fostering a unified approach to environmental decision-making.
Researchers at Tokyo Institute of Technology developed a computational DNA droplet that can recognize specific combinations of chemically synthesized microRNAs as biomarkers of tumors. The droplet can perform logic computing operations and detect multiple cancer biomarkers simultaneously.
Scientists have successfully sequenced the first human genome from an individual who died in Pompeii, Italy, after the eruption of Mount Vesuvius in 79 CE. The study provides new insights into the genetic history and lives of the population, including evidence of high levels of genetic diversity across the Italian Peninsula.
Researchers mapped out the natural history of drywood termites, revealing oceanic voyages that accelerated their evolution and confirmed recent dispersals via humans. The study also challenged the common assumption of primitive lifestyles, highlighting the diversity and complexity of termite social behavior.
Researchers found a genetic link between long repeated DNA sequences and schizophrenia. The study discovered rare tandem repeat expansions near genes associated with the disorder, contributing to dysfunction at synapses and disrupting gene function.
Researchers at WFIRM have developed a novel method to refine CRISPR/Cas9 gene editing, increasing efficiency and decreasing large DNA deletions. The technique, which fuses DNA polymerase I or the Klenow fragment to Cas9, improves safety and functional editing outcomes.
A team of researchers at UC Riverside has discovered that a protein complex called CAF-1 controls genome organization to maintain lineage fidelity in blood stem cells. The study found that CAF-1 keeps specific genomic sites compacted and inaccessible to transcription factors, ensuring the expression of lineage-specific genes.
Researchers integrated computer functions into rolling DNA motors, enabling them to sense chemical information, process data, and respond accordingly. The motors can be programmed to detect specific pathogens or DNA sequences, making them a potential technology for medical testing and diagnostics.
Scientists have developed a new approach to expand the target range of CRISPR/Cas systems, allowing for slight variations in target DNA while maintaining local specificity. This technology could help realize the potential of CRISPR/Cas-based gene therapy and pathogen diagnosis, particularly for diagnostics.
Researchers at the Sloan Kettering Institute have discovered the structure of the 9-1-1 clamp, a key player in DNA repair. The 9-1-1 clamp is shaped like a ring and opens widely to surround broken DNA, challenging a long-held model in the field.
A team of researchers has developed a DNA-based data storage platform with an expanded molecular alphabet, enabling the storage of vast amounts of digital information. The new system uses nanopores to distinguish between natural and chemically modified nucleotides, increasing storage density and sustainability.
A team of researchers has developed a new method using environmental DNA analysis to track the source of fecal contamination in surface water. By analyzing specific DNA sequences, they can identify the main contributors to pollution and potentially pinpoint areas with faulty wastewater treatment infrastructure or poor manure management.
Researchers found that epigenetic inheritance can affect the genetic composition of a population for multiple generations. Exposure to high temperatures accelerated the rate of evolution, increasing the spread of genes through mating.
A massive DNA sequencing project has mapped the deep-sea biodiversity, revealing a vast and unknown ecosystem that plays a crucial role in ocean food-webs and carbon sequestration. The study sheds light on the connection between surface and deep-water ecosystems, with implications for understanding climate change.
Researchers used microscopic strands of DNA to guide the assembly of gel blocks that self-assembled in around 10-15 minutes. The process was highly specific and easily programmable, allowing the blocks to interact with each other in different ways by changing the sequence of DNA.
Researchers analyzed DNA sequences and electronic health records of thousands of individuals to discover that the chance a pathogenic genetic variant may cause a disease is relatively low, about 7 percent. However, some variants are linked to wide range of risks for disease.
A new sequencing technique called 2bRAD-M has been developed to accurately identify species-level information from low-biomass and degraded microbiome samples. The method uses restriction site-associated DNA sequencing (RADseq) to produce high-resolution profiles of bacteria, archaea, and fungi down to the level of species.
Researchers at the University of Bristol have created new DNA parts that can shape the flow of cellular processes along DNA. This technology allows for the rapid assembly and testing of thousands of DNA parts in parallel, unlocking new tools for building sustainable biotechnologies.
Researchers developed a new method to complete genetic data gaps using haplotype blocks, improving breeding efficiency in plants. The approach has shown comparable quality to collecting more information from DNA strands, reducing costs in animal and plant breeding.
The project aims to decorate DNA sequences with colourful nano-lights to enable faster read/write processes and novel data encoding concepts. By using unique recognition capabilities of single DNA strands, the consortium plans to develop novel nanomaterials, algorithms, and reader devices for efficient data storage.
Researchers introduce a new theoretical model that explains how DNA supercoiling drives collective dynamics of RNA polymerases during transcription. The model considers the number of RNAPs and transcription factor binding, revealing two contrasting modes of RNAP group dynamics.
Researchers have developed a powerful new tool that can determine the diversity of hard corals on a reef by analyzing DNA in seawater samples. This method is faster, easier, and less expensive than traditional visual identification, allowing for more accurate coral reef conservation and restoration.
A special form of four-stranded DNA has been found to interact with the gene that causes Cockayne Syndrome when faulty. G-quadruplexes, which form knot-like structures in DNA, specifically bind to a protein called CSB, affecting its function and potentially leading to premature ageing.
The study, published in Scientific Reports, used eDNA sequencing to investigate fish diversity in the Amazon River basin. Researchers found that only 26% of species identified with precision at the species level could be linked to traditional catch data.
Researchers at Arizona State University have developed a new microscopy method that can track 100 single molecules simultaneously in three dimensions. The technique uses surface plasmon resonance (SPR) technology to precisely image molecular binding events and study their dynamic activities in real time.
Researchers found that DNA tangles create mutational hotspots in bacterial genomes, influencing evolution. By altering the sequence to prevent hairpin tangles, they can predict how microbes might mutate under selective pressure.
A novel metagenome assembler called MetaPlatanus has been developed to improve DNA sequence accuracy, including those of uncultured organisms. The tool uses accurate short DNA sequence reads to assemble contigs and scaffold larger chromosome-scale structures.
A study by University of Utah biologists discovered a mutation in the ROR2 gene is linked to short beak length in domestic pigeons. This mutation also underlies the human disorder Robinow syndrome, which shares striking facial features with the pigeon phenotype.
A team of scientists from Incheon National University developed a programmable DNA-based microfluidic chip that can perform complex mathematical calculations, such as Boolean logic operations. The chip uses a motor-operated valve system to execute a series of reactions in rapid and convenient manner.
Researchers successfully detected local mammals and birds by collecting 18 litres of water from a two-kilometre stretch along the river Mulde. The team identified 50% of fish species, 22% of mammal species, and 7.4% of breeding bird species in the region.
Researchers at Kyoto University designed a synthetic molecular code, EnPGC-1, that activates mitochondrial biogenesis in T cells, increasing their numbers and longevity. The approach enhances anti-tumor immunity in mice and improves survival.
Researchers found that viral fossils in Australian marsupials are used to make non-coding RNAs that protect against outside infection. The study suggests that these viral fossils may be helping to immunize animals, potentially providing a mechanism similar to vaccination.
Belgian researchers have developed an all-in-one test to identify healthy embryos for transfer, reducing the risk of passing de novo genetic diseases. The test uses long read sequencing and can detect copy number variants and single nucleotide variants in a single workflow.
Scientists at Kyoto University developed a chemical compound that can tag and remove mutant DNA sequences from mitochondria, potentially treating mitochondrial diseases. The approach overcomes existing problems with genetic material injection and antioxidant drugs.
A team of researchers from NUS developed an integrative approach to boost accuracy in mosquito surveillance by including larvae and species identification using mini-barcodes. This approach improves overall diversity estimates by 38% compared to adult-only data, contributing to baseline knowledge on potential vectors in Singapore.
A new genosensor, developed by a Brazilian research team, can detect the genetic sequence of SARS-CoV-2 in saliva or other body fluids with high sensitivity. The device can analyze samples in 30 minutes for a cost of less than $1 per genosensor.
A new process for making RNA has been developed by researchers at the University of Massachusetts Amherst, yielding purer and more abundant RNA at a fraction of the cost. This breakthrough removes the largest stumbling block on the path to next-generation RNA therapeutic drugs.
A new study has confirmed the Xerces blue butterfly's extinction due to human activities, sparking concerns about the impact on ecosystems. The DNA analysis reveals a unique genetic sequence distinct from other butterflies, emphasizing the importance of protecting remaining species.
A new genetic technique edits every chloroplast in a plant without changing its nuclear DNA. Researchers achieved this by modifying chloroplast genes specifically and removing the DNA editing tool, which cannot be inherited by future seeds. This approach could potentially solve both technical challenges and controversies surrounding GMOs.
The new method streamlines DNA production by automating the synthesis of phosphoramidites, eliminating manual labor and storage issues. This breakthrough has significant implications for disease identification, drug manufacturing, and other medical applications.
The study created a genetic database that maps the function of genetic variants in autoimmune diseases, connecting DNA sequence changes to gene expression levels. The researchers analyzed 79 healthy volunteers and 337 patients with different types of immune-mediated diseases.
A two-decade study of wild Soay sheep in Scotland reveals that telomere length is correlated with individual longevity. However, the effect of telomere length on mortality appears to be driven by genetic factors rather than environmental influences.
Researchers have discovered a new gene-editing technique that allows for the programming of sequential cuts in genes, enabling researchers to better investigate time-sensitive processes like cancer development. The discovery was made by UIC's Bradley Merrill and colleagues using special molecules called 'proGuides',
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.