A new study demonstrates DNA metabarcoding can amplify and sequence plant DNA from human stool, tracking dietary intake with high accuracy. The method has potential for characterizing animal and fungal components of human diets, offering a promising alternative to traditional assessment techniques.
Researchers at Moffitt Cancer Center have identified a new mechanism controlling DNA repair, where βarrestin-1 targets 53BP1 for protein degradation. This finding provides a novel strategy for developing therapeutic agents with radiation protection properties.
DNA molecules have a hydrophobic interior that groups together when exposed to water, controlling the binding process. The discovery opens doors for new understanding in medicine and life sciences, with potential applications in fighting resistant bacteria and curing cancer.
Researchers are using DNA to build nanoscale devices that can generate, transmit, and sense mechanical forces. These devices have potential uses in drug delivery, nano computers, and nano robots, and could lead to breakthroughs in biomedical research and materials science.
Researchers have identified colibactin-645 as the culprit of DNA double-strand breaks, revealing a new link between E. coli toxins and colorectal cancer risk. The discovery provides a model for designing potent DNA cleaving agents.
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.
Bacteria can swap DNA through mechanisms similar to sexual selection in animals, and this genetic mixing may have benefits for cell survival and evolution. Researchers suggest that bacterial transformation, a process where cells release and take up DNA, could be governed by sexual selection.
Researchers have developed a new technology that uses DNA for information processing and storage in living cells. The DOMINO system enables the deep interrogation of biology and can execute cascades of DNA writing events in response to biological signals.
Researchers at Technical University of Denmark have developed a method to quickly couple enzymes with specific methylation patterns, revealing which enzymes are responsible for certain patterns. This discovery holds great promise for improving DNA transformation and introducing foreign DNA into host organisms.
Researchers found that DNA methylation patterns can affect the impact of aspirin on mortality in women with breast cancer. Women with certain DNA characteristics who take aspirin before a breast cancer diagnosis may live longer, according to the study published in Cancer journal.
Researchers found that fish preserve 'DNA methylation' memories between generations, unlike humans where this is almost entirely erased. This discovery opens up new avenues for studying intergenerational memory transfer through DNA methylation.
Researchers successfully studied DNA methylation loss in human cells, revealing the activation of transposons that can lead to serious diseases. The study provides new insight into how changes in DNA methylation contribute to diseases and opens up potential for a new understanding of genome function.
A new study published in European Journal of Human Genetics reveals that the left-handed Z-DNA conformation plays a key role in regulating type I interferon responses, which are involved in fighting viruses and cancer. The study analyzes families with variants in the ADAR gene and confirms a biological function for the left-handed conf...
Researchers analyzed DNA from Gibraltar Neanderthal remains found in 1848 and 1926, finding that some sequences were deaminated due to damage, while others showed significant human DNA contamination. The study suggests it is possible to analyze ancient DNA in highly contaminated specimens using a specific preparation method.
St. Jude Children's Research Hospital scientists have determined the structure of the minichromosome maintenance complex, a ring-shaped enzyme that plays a central role in DNA replication. The research proposes a rotary mechanism to initiate DNA replication and may help solve one of biology's greatest mysteries.
A Baylor University researcher has made a significant discovery about the dynamic process of DNA damage recognition, providing new insights into the molecular repair machinery. The study found that the protein Rad4/XPC binds to UV-induced DNA lesions, marking them for repair and initiating the nucleotide excision repair pathway.
Researchers captured high-resolution images of a gene-editing tool called CRISPR-Cas9 using cryo-EM technology, revealing new information about its mechanism. The findings hold promise for developing more efficient and precise versions of the enzyme to correct disease-causing DNA mutations.
DNA damaged by cisplatin is mostly fixed within two circadian cycles in noncancerous tissue, with repair of transcribed genes dominating the first 48 hours. This knowledge could aid the design of successful chronochemotherapies to reduce toxicity and target cancer cells.
Researchers have developed a new gene editing tool called INTEGRATE that harnesses bacterial jumping genes to insert any DNA sequence into the genome without cutting DNA. This technology offers a precise and reliable alternative to current gene-editing tools, which can lead to errors.
Researchers developed a new approach to improve matches between DNA samples and face databases by reversing the process from DNA to face. The method uses software to measure faces and check for compatibility with unique DNA patterns, allowing for more accurate identifications.
Researchers have discovered that DNA base editors can induce tens of thousands of off-target RNA single nucleotide variants (SNVs). To address this issue, they engineered deaminases to eliminate the off-target effects, providing a solution for the clinical application of these methods.
A novel molecular mechanism for regulating PCNA cycling during DNA replication has been discovered. The ATAD5-RFC-Like-Complex (ATAD5-RLC) is a PCNA unloader that opens the PCNA ring to remove it from DNA.
Researchers developed DNA Enrichment and Nested Separation (DENSe) techniques to label and retrieve DNA data files, increasing estimated file names from 30,000 to 900 million. The system uses nested primer-binding sequences and molecular tags for efficient data retrieval.
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 from the Thomä group at FMI have identified a new mechanism by which UV-DDB detects and binds to damaged DNA tightly packed in nucleosomes. This mechanism, known as 'slide-assisted site-exposure', allows repair proteins to bind to lesions without requiring additional proteins or chemical energy.
DNA nanotubes designed by Yi Li and Rebecca Schulman can heal themselves in serum, extending lifetimes from 24 hours to over 96 hours. The researchers developed a self-repair process using smaller DNA tiles that repair damaged structures by replacing or joining to the nanotube ends.
A new genetic engineering approach removes a specific component of human-made DNA to make it invisible to bacterial defenses, allowing for more efficient and time-saving gene editing. This breakthrough enables researchers to engineer clinically relevant bacteria with reduced resources and increased flexibility.
Researchers found that matching mitochondrial DNA to nuclear DNA could be important when selecting potential donors for mitochondrial donation treatment. They discovered that mitochondria are fine-tuned to the nucleus and may influence the likelihood of certain mutations being passed on.
Researchers discovered oldest Scandinavian human DNA in ancient chewing gums, providing a link between material culture and genetics. The study sheds light on the genetic composition of early Mesolithic populations from Scandinavia.
A study published in ACS Central Science found that many DNA cage nanostructures are not taken up by cells, but rather degraded by enzymes outside the cell. The researchers' findings have significant implications for the use of DNA strands as a tool for delivering therapeutic agents into diseased cells.
Researchers developed a method to detect and edit DNA methylation in individual mouse oocytes, enabling predictions of offspring phenotype. The technique allows for correction of genetic disorders, such as Angelman syndrome, and may facilitate study of epigenetic information.
Researchers found that CRISPR base editors can induce widespread off-target effects in RNA beyond targeted DNA, but developed variants with less impact. The SECURE variant significantly reduces unwanted RNA edits while increasing precision of on-target DNA editing.
Researchers at JILA have developed a fast and gentle method to prepare DNA samples for imaging in liquid, revealing detailed structures of protein-DNA complexes. The process, which takes just five minutes, preserves the mechanical properties of DNA and produces high-resolution images of DNA's iconic double helix structure.
A new CRISPR-Cas3 tool has been developed for long-range DNA editing in human cells, allowing scientists to target and delete large expanses of DNA. This technique harnesses a different type of CRISPR system than the widely used Cas9 tools, enabling precise control over DNA degradation.
Researchers at Arizona State University have developed a method to assemble protein and DNA building blocks into three-dimensional cages. The technique allows for precise control over cage structure and size, opening up new possibilities for targeted delivery, structural biology, biomedicine, and catalytic materials.
Researchers from Osaka University developed a tiny DNA reader using microscopic probes and an electrical current to locate anticancer drug molecules. The technology successfully identified individual molecules in short DNA strands, pinpointing exact insertion sites of trifluridine.
A new approach called BIO-PC uses semi-permeable capsules containing diverse DNA logic gates for molecular sensing and computation. This method increases speed, modularity, and designability of computational circuits, reducing cross-talk between DNA strands.
Researchers have established a novel method to study DNA replication in individual cells, allowing them to gain insights into the mechanisms that maintain genomic DNA stability. The 'scRepli-seq' method revealed that genome replication profiles were highly conserved among cells and reflected the organization of chromatin compartments.
A new biosensor has been developed to detect fetal Down syndrome DNA in pregnant women's blood, offering a fast, sensitive, and cost-effective alternative to traditional tests. The sensor can detect DNA concentrations as low as 0.1 fM/L, making it more sensitive than other reported field-effect transistor DNA sensors.
Researchers used cryo-force spectroscopy to study DNA elasticity and binding forces at low temperatures. The study reveals that DNA behaves as a chain of small coil springs, with the spring constant determined for individual components.
A new study led by Grant Brown suggests that at times of stress, DNA replication errors are far more frequent than previously appreciated. This could lead to increased mutations in human cells, potentially contributing to cancer and other diseases.
A team of researchers used bacteria to identify human proteins that cause DNA damage when overproduced, leading to cancer. The study found 284 human protein relatives linked to cancer more often than random sets of proteins.
New research allows for fully automated design of DNA staple sequences, enabling the creation of complex nanostructures with ease. This breakthrough advances the field of DNA origami, opening up new possibilities for applications in material science and medicine.
Researchers developed a computer program that translates free-form drawings into DNA structures, enabling users to create complex nanostructures for various applications. The 'PERDIX' program uses a mathematical approach to automate the design process, making it accessible to anyone with basic drawing skills.
Caltech scientists develop dynamic DNA nanostructures, enabling the creation of a microscopic tic-tac-toe game board with reconfigurable parts. The technology combines self-assembling tiles and strand displacement to allow for molecular self-reconfiguration, paving the way for more sophisticated nanomachines.
Scientists at the Salk Institute discovered a complex gene regulation network that helps plants cope with DNA damage. The research identified approximately 2,400 genes responding to DNA damage, with only 200 directly activated by SOG1, revealing its 'hands-off' overseer role.
A study published in Cell Reports reveals the role of protein PIF1 in repairing G-quadruplex DNA structures, which can impede DNA repair mechanisms. The discovery sheds light on potential therapeutic options for cancer treatment and could improve patient outcomes.
A study by Baylor College of Medicine researchers found that when Dna2 is absent, small DNA fragments insert themselves into chromosome breaks, leading to genomic instability. This mechanism may contribute to cancer development and other cellular conditions.
Scientists discovered that DNA damage, not just errors in DNA doubling, causes many genetic mutations. This challenge traditional views on mutagenesis and its role in hereditary diseases and cancer.
Researchers have discovered how DNA gyrase, a molecular machine in bacterial cells, prevents twists in DNA that can stop replication and kill the cell. This knowledge can lead to the design of new targeted antibiotics to combat antibiotic-resistant bacteria.
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 found that certain DNA structures, like G-quadruplexes, can slow down or speed up DNA synthesis, affecting error rates. Non-B DNA regions with specific motifs were associated with increased sequencing errors and human disease susceptibility.
Researchers at Arizona State University have developed a method to create complex knot-like nanostructures in single-stranded DNA, with crossing numbers ranging from 9 to 57. This breakthrough enables the design of molecular structures with specific functions and unprecedented complexity.
Researchers found a compact CRISPR gene-editing machinery in ancient microbes, dubbed Cas14, which is smaller than other Cas proteins and has the potential to improve rapid diagnostic systems for infectious diseases, genetic mutations, and cancer. The discovery of Cas14 could provide a powerful addition to diagnostic tools.
Researchers at University of Pennsylvania have developed a new method to sequence epigenetic marks on DNA, allowing for more precise detection of disease earlier and with increased precision. The method uses APOBEC DNA deaminases to differentiate between two common epigenetic marks, methylation and hydroxmethylation.
Researchers found that individuals with major depression have DNA methylation levels corresponding to an increased age, with a biological age on average 8 months older than healthy controls. Childhood trauma was also associated with accelerated epigenetic aging.
A recent study has identified a rare genetic mutation in three patients with early-onset acute myeloid leukaemia, highlighting the importance of DNA damage in driving cancer development. The study found that these patients lacked a DNA repair protein called MBD4, leading to increased DNA damage and accelerated ageing.
A new study by Professor Hajin Kim reveals that DNA phase separation can be triggered by heavy methylation of DNA, influencing cellular activities such as gene expression and stem cell differentiation. The research team discovered that electrostatic forces between DNA molecules play a crucial role in this phenomenon.
Skin cells can detect damaged DNA in the absence of infection and trigger an immune response similar to that observed during viral infections. This discovery could lead to new cancer treatments and preventive measures against skin cancers.
Researchers have developed a sensitive new test to detect trace amounts of peanuts in foods using the peanuts' DNA. The new assay targets DNA from peanut chloroplasts, resulting in a detection limit of about 1 part per million.