Articles tagged with Dna
Scientists have found that nucleosomes act as gatekeepers for p53's molecular partners, controlling its access to the genetic code. This discovery reveals a new layer of regulation over p53's activity and opens possibilities for developing cancer therapies that restore or control p53 function.
A study reveals that epigenetic changes associated with aging in adults do not occur before sexual maturity. In fact, rDNA copy numbers and methylation increase during childhood and adolescence, suggesting cells actively maintain a youthful state to ensure efficient protein production.
By reprogramming chromatin to prevent cancer cells from adapting to evade treatment, researchers have doubled chemotherapy effectiveness in animal experiments. This approach restores cellular memory, making existing drugs more effective against cancer.
Researchers developed a chemical probe that binds to damaged mitochondrial DNA, blocking enzymatic processes that lead to its degradation. This approach lessens mtDNA loss, preserving energy production in vulnerable tissues. The new molecule successfully reduced inflammation and maintained functional DNA despite chemical tagging.
Scientists develop a new approach to construct moiré superlattices using DNA nanotechnology, enabling precise control over twist angles and lattice symmetries. The resulting structures have potential applications in nanophotonics, spintronics, and materials science.
Researchers at Hebrew University developed a precise method to estimate chronological age from DNA using deep learning networks analyzing DNA methylation patterns. The method achieves age predictions with a median error of 1.36 years in individuals under 50, unaffected by smoking, BMI, and sex.
Researchers discovered how the genome uses competition between proteins to prevent rogue retrotransposon LINE1 from causing damage. The team found that a modified protein NRBP2 marks and disposes of another protein NRBP1, which is no longer functional due to mutations.
A new genomic study reveals that population structure in the Himalayas began over 10,000 years ago, shaping human survival in one of Earth's most challenging environments. The research identifies novel genetic variants linked to adaptation in hypoxia, metabolism, immunity, and physical activity.
Researchers at Emory University have discovered that psilocybin can delay cellular aging by over 50% and extend the lifespan of human skin and lung cells. In a study involving aged mice, psilocybin was shown to increase survival by 30% and improve physical features, suggesting potential for anti-aging therapies.
A new study has mapped the history of infectious diseases across millennia, offering insights into how human-animal interactions transformed our health landscape. The research analyzed ancient DNA from over 1,300 prehistoric individuals, revealing that zoonotic diseases became more widespread around 5,000 years ago.
A new study by researchers from Rice University has uncovered a mechanism by which the identity of nucleotides following a given nucleotide in DNA affects transcription accuracy. The discovery offers insight into hidden factors that influence transcription accuracy and may improve synthetic and therapeutic RNA.
A new approach uses DNA to fabricate targeted 3D nanoscale structures via self-assembly, allowing for complex designs and parallel assembly. The method enables significant time- and cost-savings compared to traditional top-down strategies.
A study by a trans-European research team reveals how DNA condensation during the cell cycle is regulated by a unique molecular switch. When cell division begins, the key enzyme CDK1 phosphorylates microcephalin and M18BP1, allowing condensin II to pack the DNA into sausage-shaped chromosomes.
Researchers at the University of Sydney developed a biological 'artificial intelligence' system called PROTEUS, which can accelerate cycles of evolution and natural selection to create molecules with new functions in weeks. The system has potential applications in finding new medicines and improving gene editing technology like CRISPR.
MIT researchers have designed cheap, disposable electrochemical sensors that can detect multiple diseases using DNA-coated electrodes. The sensors were stabilized with a polymer coating, allowing them to be stored for up to two months, enabling potential use in low-resource regions and at home.
A new urine-based tumor DNA test can help personalize bladder cancer treatment by predicting which patients are at higher risk for recurrence after immunotherapy. The test, UroAmp, analyzes urine samples to identify bladder cancer-related mutations and generate a genomic profile for each patient.
A new study found that telomere shortening is not a shared characteristic of all progeroid syndromes, which cause individuals to display symptoms of aging far earlier than expected. The research suggests that the underlying biology of each syndrome plays a crucial role in determining whether telomere shortening occurs.
Scientists from Institute of Science Tokyo create photo-switchable binding of DNA nanostructures that generate two distinct directional motions. The research paves the way for innovative fluid-based diagnostic chips and molecular computers.
Researchers found that low-cost genetic testing methods can effectively detect BRCA2 and HOXB13 mutations linked to increased prostate cancer risk. These findings support the adoption of precision medicine in prostate cancer care, enabling better diagnosis and personalized treatment plans.
Research reveals that children with OCD have significantly higher rates of rare copy number variants in their DNA compared to healthy children. The study's findings support previous studies and pave the way for future research into earlier diagnosis and targeted treatments.
Researchers discovered that Nup98 forms droplet-like structures to protect broken DNA in tightly packed zones, allowing for accurate repairs and reducing genetic mistakes. This finding has implications for cancer and aging, with potential applications for therapies that mimic Nup98's protective functions.
A team of researchers discovered genetic evidence of a rare matrilineal community in Neolithic China dating back over 4,750 years. The study found that women stayed within their clan for life, while men often moved between clans, suggesting a relatively simple and egalitarian farming community organized around two matrilineal clans.
Researchers at the University of Florida have developed a method to analyze airborne DNA, tracking species and pathogens in the air. This technology has vast potential applications for studying wildlife, human health, and environmental monitoring.
A circulating tumor DNA-based blood test demonstrated acceptable accuracy for colorectal cancer detection in an average-risk population. However, it struggled to detect advanced precancerous lesions, highlighting the need for further improvements.
Researchers discovered a specialized histone arrangement, called the CENP-A–H4 octasome, in centromeric regions. This unique structure likely contributes to proper kinetochore formation and mitosis.
Researchers from Anglia Ruskin University and Imperial College London used advanced paleoproteomic techniques to analyze dinosaur fossils, discovering red blood cell-like structures in a fossil. This finding raises the possibility that soft tissue and cellular components are more commonly preserved in ancient remains than previously th...
A groundbreaking study reveals that leprosy was present in the Americas for over 1,000 years before European arrival. The research, led by Colorado State University and the Institut Pasteur, found ancient DNA evidence of the disease in human remains from Canada, Argentina, and Mexico.
A new AI tool developed by University of Missouri researchers can predict the 3D shape of chromosomes inside individual cells, providing a new view of how genes work. The tool helps identify unique differences in chromosome folding between cells, which controls gene activity and can lead to diseases like cancer.
As women age, more genes on their X chromosomes escape silencing, potentially influencing disease. This epigenetic change may explain sex-based differences in age-related diseases.
A Geisinger study finds that Y chromosome genes increase height by 3.1 centimeters in individuals with sex chromosome aneuploidy, explaining approximately 23% of the average height difference between men and women.
Scientists have created a new way to store and decode data using synthetic molecules, which can be used to unlock computers with encoded passwords. The method involves designing molecules that contain electrochemical information, allowing messages to be decoded using electrical signals.
A new AI model can predict protein location in human cells with high accuracy, enabling faster diagnosis of diseases like Alzheimer's and cancer. By combining protein sequence analysis with computer vision, the model can pinpoint proteins' locations at the single-cell level.
Researchers at Northwestern University discovered that DNA's behavior changes in a crowded environment, affecting the amount of stress required for strand separation. The study used microscopic magnetic tweezers to investigate interactions between DNA and various molecules.
Researchers have developed a model called Difface that can reconstruct 3D facial images from DNA data, improving forensic investigations. The method demonstrates excellent performance in aligning and reconstructing facial images from paired DNA differences.
Researchers found that a chemical modification on messenger RNAs triggers disposal while being read by the ribosome, but during cell stress, this process is halted, allowing stress-response proteins to accumulate and help cells recover. The study may have implications for cancer therapies targeting m6A modifications.
A centralized and accessible database aims to integrate molecular simulation data, ensuring findability, accessibility, interoperability, and reusability. This will amplify the impact of these data and avoid duplication.
A study led by Helmholtz Munich found that epigenetic programs play a crucial role in DNA self-organization in early embryos. The researchers discovered multiple parallel regulatory pathways controlling nuclear organization, which can self-correct errors even after the first cell division.
Researchers developed fluorescent polyionic nanoclays that can be customized for medical imaging, sensor technology, and environmental protection. These tiny clay-based materials exhibit high brightness and versatility, enabling precise tuning of optical properties.
Researchers at UC San Diego found that HPV DNA hybridizes with human DNA genes in oropharyngeal cancer cells, forming ecDNA that promotes tumor growth. This study suggests that selectively targeting ecDNA-disrupting therapeutics could slow tumor growth while leaving normal cells intact.
Researchers found that pancreatic cancer cells gain a survival edge by carrying copies of critical cancer genes on circular pieces of DNA outside chromosomes. The discovery highlights the importance of targeting extrachromosomal DNA in treating the disease.
Scientists discovered a protective variant of the HAQ-STING gene that prevents COPA Syndrome. This finding opens the door to a new gene therapy for the condition, which currently has no cure.
Biologists have identified a new type of regulation that influences the expression of about half of all human genes by targeting specific introns. This discovery adds complexity to the process of gene expression and suggests potential therapeutic targets for diseases such as blood cancers and spinal muscular atrophy.
The Predictive Phenomics Initiative and the Exposome Moonshot aim to understand the impact of molecular signaling on organisms. Environmental factors, such as diet and lifestyle, can significantly affect biological processes, influencing traits like height, disease risk, and even eye color.
A study published in Pediatric Investigation found that microbial cell-free DNA testing predicted infectious organisms consistent with traditional culturing tests in 26.9% of pediatric patients, but its utility was variable due to factors like antibiotic exposure and contamination.
A University of Oklahoma research team has developed a breakthrough method of adding a single nitrogen atom to bioactive molecules, transforming them into new pharmacophores. This process, called skeletal editing, could open up uncharted regions of chemical space in drug discovery, making existing drugs cheaper and more accessible.
Researchers at University of California San Diego School of Medicine have discovered that fatty liver disease can lead to liver cancer through DNA damage in liver cells. The study suggests that developing new drugs to prevent or reverse DNA damage could be a promising approach for preventing liver cancer.
Researchers found a specific magnesium concentration range where DNA wraps around polyphosphate-magnesium ion condensates, forming flexible structures. This discovery could lead to new methods for tuning cellular responses and has potential applications in translational medicine.
Researchers identified a vulnerability in the bacterial machinery driving antibiotic resistance adaptation, which could lead to new counter-strategies. The study found that a genetic toolbox called integron system plays a crucial role in adapting resistance genes.
Researchers have developed a fast and rewritable DNA computing method that uses DNA origami registers to process digital files. This method has the potential to be more powerful than current silicon-based machines.
Researchers at the University of Ottawa have developed a nanoparticle strategy to deliver both mRNA and siRNA, enhancing and interfering with multiple gene and protein expressions. This approach holds significant promise for treating major diseases like cancer and cardiovascular diseases.
Researchers used ancient DNA to uncover novel signatures of adaptation in early Europeans, tracing genetic changes in response to lifestyle shifts. The study identified 14 regions of the genome that underwent significant natural selection, including traits related to vitamin D production and dairy digestion.
A groundbreaking metagenomic sequencing test has proven effective in rapidly diagnosing almost any kind of pathogen, including viruses, bacteria, fungus or parasite. The test analyzes all nucleic acids present in a sample, replacing multiple tests with a single one and speeding up diagnosis.
A team of biologists at UT Arlington has discovered a new species of gecko, Pseudogonatodes fuscofortunatus, with distinct skeletal features and genetic data. The discovery highlights the unique characteristics of this tiny lizard, found in the Paria Peninsula of Venezuela.
Scientists have engineered synthetic genes that can assemble into complex biomaterials like nanoscale tubes, using a modular approach similar to building furniture. This breakthrough enables the creation of distinct materials that can spontaneously develop from a finite set of parts by rewiring the timing of molecular instructions.
Researchers used DNA barcoding to identify 31,800 insect samples from 37 habitats in Sweden, discovering 175 new species of scuttle flies. The study provides insights into the diversity and distribution of these species, which are influenced by climate factors and habitat changes.
Researchers at Colorado State University have identified an alternate method to study changes during the DNA replication process in lab settings using genetically modified yeast. This new approach provides a less toxic and quickly reversible alternative to hydroxyurea, allowing for better insight into cell cycle arrest mechanisms.
A team of scientists developed an advanced computational technique to predict gene architecture through nucleosome position, combining experimental approaches with machine learning techniques. The study demonstrates that nucleosomal architecture is greatly influenced by DNA sequence information and physical signals.
Researchers have identified a new epigenetic mark, 5-formylcytosine, which plays a crucial role in activating genes during early embryonic development. This discovery sheds light on the regulation of gene expression in vertebrates and has implications for our understanding of human development and disease.
A UCL-led research team has crystallized the first alternative DNA structure from the insulin gene, revealing its shape and structure. The discovery suggests that different variants in the insulin gene can form different DNA structures, which could affect insulin function and potentially play a role in diabetes development.
A new approach developed by researchers could streamline the forensic analysis pipeline and reduce delays in processing DNA evidence. The technique, using differential digestion with digital microfluidics, simplifies the process of isolating an assailant's DNA from a single sample, reducing manual steps from 13 to five.