Articles tagged with Dna
Genomic imprinting discovered by Davor Solter and Azim Surani reveals maternal chromosomes contribute essential information missing in paternal chromosomes. This phenomenon, coined genomic imprinting, involves tiny methyl groups attached to DNA's four bases regulating fetal growth and development.
A study published in Science Advances reveals a deeply complex evolutionary history of mastodons, with multiple migrations across North America driven by climate change. Genetic analyses confirm the presence of distinct genetic groups and lineages, including a mysterious Mexican lineage.
Research by University of Pittsburgh scientists discovered that damaging telomeres can lead to dysfunctional T cell function. To combat this, they developed a targeted antioxidant approach that rescued T cell function, opening the door for novel therapies in cancer immunotherapies.
Researchers found genetic adaptations in response to micronutrient shortages and surpluses, particularly in regions with iodine-poor soils. The study provides insights into the impact of micronutrient availability on human evolution, highlighting potential vulnerabilities to deficiencies as climate change affects soil nutrient levels.
The Gabriella Miller Kids First Pediatric Research Program has released its 36th study, introducing significant new data updates to two existing studies. These advances aim to uncover the genetic foundations of childhood cancers and congenital conditions. With over 110,000 data files available, researchers can explore publicly accessib...
A study found that nearly half of spontaneous DNA damage in human oocytes localizes to telomeres and accumulates with donor age. Telomeric DNA damage compromises oocyte quality, leading to chromosomal instability and reduced maturation rates.
A team of scientists has identified rogue DNA rings as early drivers of glioblastoma growth, suggesting a window of opportunity for earlier detection and treatment. The study suggests that targeting these DNA rings could lead to more effective treatments.
The Earth BioGenome Project aims to create a digital library of DNA sequences to preserve and protect life on Earth. The project has revealed a refined strategy to scale up the sequencing of 150,000 species, accelerating biodiversity research and global conservation.
Researchers used ancient DNA and computer simulations to determine that migration of farming groups was the dominant factor in the expansion of farming, while cultural adoption by hunter-gatherers played a minimal role. The study found that the adoption of new ideas and practices did not significantly accelerate the spread of agriculture.
Researchers have developed 'molecular scissors' that can precisely and permanently disable the hepatitis B virus's hidden genetic material. The treatment has shown promising results in laboratory tests and HBV-infected mice, with a 99% reduction in circulating viral DNA. This innovation represents a significant step towards a functiona...
Researchers at Lund University found that specific sequences within non-coding genome help shape the developing human brain. Disrupting these sequences leads to abnormalities in gene activity and brain organoid growth, highlighting their importance in regulating genes and development.
Researchers at the University of Waterloo have developed a novel method using modified M13 bacteria to deliver targeted gene therapies for genetic disorders. This approach shows promise as a cost-effective alternative to current methods, which can be expensive and trigger toxic side effects.
A new, extinct shelduck species discovered on the Rēkohu Chatham Islands evolved shorter wings and longer leg bones due to its environment. The study found that flying was not energetically efficient in this context, leading to the adoption of more robust leg bones for support.
Newly developed DNA nanostructures form flexible, fluid, and stimuli-responsive condensates without chemical cross-linking. These findings pave the way for adaptive soft materials with potential applications in drug delivery, artificial organelles, and bioengineering platforms.
Researchers analyzed centromeres in onion, garlic, and Welsh onion using CENH3-targeted antibody to map centromere regions. They found significant variations in size and position/mobility between species, challenging the static view of centromeres.
Researchers at the University of Illinois Chicago have uncovered the detailed chemical mechanism behind preventing premature protein release. The discovery sheds light on how cells execute protein production, one of life's most essential processes, and clarifies the role of the release factor.
Researchers validated panels of antibodies targeting clinically relevant nucleic acid modifications to visualize antisense oligonucleotides in both in vitro and in vivo studies. The tools enable detection of modified nucleic acids irrespective of sequence, facilitating multiple clinical and pre-clinical workflows.
Researchers at Cold Spring Harbor Laboratory have deciphered the first step in DNA replication, a process crucial for life. The study identifies over 100 proteins essential for this mechanism, which enables cells to duplicate genetic material efficiently.
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.