Articles tagged with Dna Structure
Research reconstructs a timeline of chromosome folding that brings remote DNA regulatory regions into physical contact with genes they control. The study suggests that this early wiring may help pre-select genes for rapid activation by enhancers at the right time and in the right cells, orchestrating developmental decisions.
Researchers at the University of Pittsburgh School of Medicine discovered an unexpected chromosome interaction between telomeres and centromeres in some aggressive cancers. This interaction creates a genetic signature that could help identify ALT-positive tumors, which are often challenging to treat due to genomic instability.
A team of scientists developed a chlorophyll-based supramolecular polymer that can gradually evolve from nonhelical fibers into well-defined helical structures. The transformation occurs cooperatively and is driven by small energy differences between stable arrangements, offering a blueprint for designing dynamic helical structures.
Researchers at Tohoku University have developed a new technology that uses thioguanosine to achieve highly efficient and controllable interstrand crosslinking of DNA. This breakthrough enables reversible DNA modification with high stability and reversibility, opening opportunities for next-generation bionanomaterials.
The study created a critical framework for understanding the architecture of the genome and its association with gene function in cells. The 4DN Consortium integrated data from over a dozen techniques to compile an extensive catalogue of looping interactions between genes and regulatory elements.
Researchers discovered unicellular organisms have more intricate DNA methylation systems than multicellular organisms. This finding opens new possibilities for targeting parasites and developing new drugs against diseases caused by protists.
Researchers at Chinese Academy of Sciences identify a key gene and protein involved in controlling DNA looping, leading to increased grain yield and nitrogen efficiency. The discovery paves the way for future crop breeding strategies to improve sustainability.
Researchers have unveiled the molecular mechanisms underlying L1's retrotransposition and integration into genomic DNA. The study reveals that ORF2p interacts primarily with the DNA backbone through electrostatic forces, enabling site-specific cleavage during retrotransposition.
A study published in Science Advances has discovered that the RAD21L protein plays a crucial role in regulating DNA structure and gene expression in sperm precursor cells. The absence of this protein leads to defects in chromosome pairing, genetic recombination, and spermatogenesis, resulting in male infertility.
Researchers at Colorado State University have created a programmable plant circuit that can turn genes on and off, allowing farmers to time harvests and adapt to drought. The breakthrough could lead to automated genetic circuit design through machine learning, revolutionizing agriculture.
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.
University at Albany researchers have pioneered new methods for designing and assembling DNA nanostructures, enhancing their potential for real-world applications. They successfully assembled these structures without the need for extreme heat and controlled cooling, using unconventional buffer substances like nickel.
Gustavsson's five-year grant aims to develop innovative tools for visualizing and analyzing DNA organization and interactions in real-time. Her project seeks to uncover the relationship between DNA structure and gene activity, with potential applications in treating diseases linked to gene regulation disruptions.
Researchers at Weill Cornell Medicine discovered that keeping the nucleolus small can delay aging in yeast cells. This finding could lead to new longevity treatments and may also reveal a mortality timer that determines how long a cell has left before it dies.
Researchers at Institute of Science Tokyo create terpene-based chiral capsules that facilitate the easy preparation of well-defined host–guest composites with tunable chiroptical properties. The resulting composites can be used in water without organic solvents, paving the way for advances in cutting-edge optical technologies.
A mouse model study led by Ohio State University researchers reveals the importance of DNA loops and protein complex cohesin in nerve cell regeneration. The study's findings could lead to new treatments for nerve injuries by understanding how chromatin organization affects gene expression.
Researchers at Texas A&M University have developed a method to recharge cellular mitochondria using nanotechnology, potentially extending healthy lifespans and improving outcomes for patients with age-related diseases. The molybdenum disulfide nanoparticles stimulate mitochondrial regeneration, helping cells generate more energy.
Researchers have demonstrated DNA-based technologies that can store, retrieve, compute, erase, and rewrite data. The technology uses soft polymer materials with unique morphologies to create a structure with high surface area for depositing DNA, enabling the full range of operations found in traditional electronic devices.
Researchers have visualized a molecular complex that loads a 'clamp' onto DNA to ensure accurate replication. This discovery sheds light on the intricate mechanisms of DNA replication and could improve understanding of related health conditions.
Researchers at Karolinska Institutet developed nanorobots that target and kill cancer cells using a 'kill switch' activated in low pH environments. The study achieved a 70% reduction in tumour growth in mice, paving the way for further investigation into its potential as a cancer treatment.
Scientists have developed a new approach to designing materials with useful electronic and optical properties. By stacking antiaromatic units using van der Waals interactions, researchers created highly conductive liquid crystals. This breakthrough could lead to advances in organic electronics, optoelectronics, and sensing devices.
Researchers created a DNA-based vaccine that mimics the structure of a virus, inducing a strong antibody response against SARS-CoV-2. The vaccine uses a DNA scaffold carrying viral proteins, allowing the immune system to focus on the target antigen.
Researchers at Karolinska Institutet used DNA origami to activate the Notch receptor in a new way, revealing it can be activated 'on demand' with the help of a protein called Jag1. The study opens new avenues for understanding the Notch signalling pathway and its role in serious diseases like cancer and Alagille Syndrome.
A study in Nature uncovers new insights into the human LINE-1 ORF2 protein's structure and mechanisms, shedding light on its evolutionary history and innate immune activation. The research also identifies potential targets for therapies to prevent cancer, autoimmune disease, and neurodegeneration.
Researchers at Salk Institute assembled the most complete atlas of the mouse brain by analyzing over 2 million brain cells. The detailed atlas reveals thousands of cell types, their connections, genes, and regulatory programs active in each cell, providing new insights into human disease vulnerabilities.
The research team led by Michal Hocek successfully pushes the boundaries of DNA structure and function. They demonstrate that heavily modified double helices are stable enough to be used in medicine, mimicking natural molecules with therapeutic potential.
A new specimen collection system has been developed to enhance assisted reproductive technologies by providing a simple one-step method for selecting high-quality sperm for ICSI. The system, known as NovaSort, uses a barrier mesh to isolate mobile sperm without damaging their DNA.
A Baylor University biochemist has discovered the structure of a novel DNA enzyme linked to infertility and certain cancers. The research provides new insights into the function of the MCM8/9 enzyme complex and its connection to disease, offering a roadmap for future studies.
Researchers at Arizona State University successfully demonstrated the use of MicroED to analyze a DNA crystal, overcoming limitations of X-ray crystallography. The technique, combined with cryo-FIB milling, enables work with smaller crystals, opening opportunities for understanding RNA structure and developing novel nanotechnologies.
Researchers have developed a new method to manipulate the shape of double-stranded DNA, known as triplex origami, which can create compacted structures with unique properties. This breakthrough has implications for gene therapy, nanoscale materials engineering, and our understanding of biological processes.
Researchers at the Netherlands Cancer Institute discovered a molecular key that locks cohesin rings, determining DNA shape and chromosome structure. This finding has broader implications for cell behavior, suggesting a universal mechanism for controlling DNA.
Researchers developed a simple purification method using surfactants to separate hydrophobic DNA nanostructures from aggregates, enabling the construction of artificial cells and complex functions in molecular robots. The purified structures retain their ability to bind lipid vesicle surfaces.
Researchers from City University of Hong Kong developed a unified colour system based on prime numbers, called C<sub>235</sub>, which can represent various colours more efficiently than existing systems like RGB and CMYK. The new colour system has potential applications in designing energy-saving LCD systems and colourizing DNA codons.
A new analysis of NETosis from Dompé farmaceutici puts a spotlight on neutrophils in carcinogenesis. Neutrophils' behavior is modulated by extracellular vesicles and interleukin-8, leading to tumor progression and drug resistance. Targeting IL-8 and EVs may lead to novel drugs to regulate neutrophil biology.
A germline mutation of topoisomerase II B affects the movement of proteins in the nuclei of cells with this mutation. The study reveals that the mutation impacts nuclear dynamics and provides a platform to understand the biological relevance of such mutations.
A new study finds that consistently losing an hour and a half of sleep per night can negatively impact immune stem cells, leading to increased inflammation and cardiovascular disease. Even after catching up on sleep, the effects of disrupted sleep remain long-lasting.
A team of researchers from Ritsumeikan University in Japan has elucidated the mechanism behind the liquid-solid phase transition of FUS protein that leads to ALS. They discovered a new therapeutic target, arginine, which suppresses FUS aggregation and could delay ALS progression.
A collaborative effort by UT Southwestern computational biologist Qian Cong and molecular biologists at the University of London elucidated the 3D structure of the Type IV secretion system (T4SS) complex. The study's findings provide a blueprint for designing drugs that can slow the development of antibiotic resistance.
The Gerlich Group at IMBA found that histone acetylation establishes a sharp surface boundary on chromosomes, resisting microtubule perforation. Chromatin phase separation and DNA looping by condensin cooperates to build mitotic chromosomes with unique physical properties.
Researchers have created a photoacoustic imaging endoscope probe that can fit inside a medical needle, resolving subcellular-scale tissue structural and molecular information in 3D. The device has an ultra-thin design, allowing for real-time 3D characterization of tissue during minimally invasive procedures.
A recent study by Indiana University researchers found that the structure of DNA storage in archaea affects its evolution rate. The study discovered that compacted DNA compartments change at a faster rate than less compacted ones. This discovery has potential impacts on research on genetic diseases like cancer.
Researchers at Columbia Engineering and Brookhaven National Laboratory have developed a new high-resolution x-ray imaging technique to reveal the inner structure of novel nanomaterials. The tool, which provides 7nm resolution, has enabled them to study complex 3D architectures with unprecedented detail.
University of Ottawa scientists, collaborating with Yale researchers, have discovered the hidden influence of a single variation between histone H3.1 and H3.3 proteins. This finding could expand our understanding of DNA damage repair and its role in diseases like cancers and sponastrine dysplasia.
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 new study reveals that histone H3.3 plays a crucial role in maintaining the balance between self-renewal and differentiation of blood stem cells, leading to abnormalities when deleted. The protein anchors key epigenetic marks at developmental genes and endogenous retroviruses, contributing to an inflammatory response and skewed produ...
Researchers have created a powerful DNA-peptide hybrid that could lead to advancements in nanotechnology and the study of Alzheimer's disease. The new structure combines three-stranded DNA and peptide structures, overcoming the challenge of chirality between these biomolecules.
Researchers used X-ray technology to study human chromosomes in their native state, discovering a fractal structure and a packing mechanism that condenses DNA into one-millionth its size. The findings could have significant implications for understanding genetics and uncovering the structures of other materials, such as viruses.
Researchers have discovered that red blood cells bind to cell-free DNA during sepsis and COVID-19, leading to their removal from circulation and triggering inflammation. This finding opens the door to new treatments for inflammatory diseases and acute anemia.
A new study suggests that a novel treatment involving the administration of an enzyme that degrades neutrophil nets may prevent brain swelling and improve waste clearance in rats with bacterial meningitis. The treatment could be combined with antibiotics if needed.
Researchers at UNSW and University of Sydney develop DNA 'nanostructures' to effectively manipulate synthetic liposomes, leading to potential applications in biosensing and mRNA vaccines. The study also explores the creation of 'mini biological computers' that can sense their environment and respond to signals.
Scientists at UEA have identified a way to determine the age of lobsters using DNA. The method is based on quantifying DNA changes that accumulate with age within a lobster. This breakthrough could help manage lobster fisheries more sustainably by providing accurate estimates of lobster ages.
The study describes the three-dimensional structure of the MUTYH protein and its interaction with PCNA, a key player in DNA replication. The researchers found that mutations in the MUTYH gene reduce its binding affinity to DNA and destabilize its structure, leading to decreased DNA repair activity.
Researchers have identified BMI1 as a key player in protecting neurons from DNA disorganization, a phenomenon associated with Alzheimer's disease. The discovery adds to our understanding of the fundamental mechanisms leading to the disorder and brings hope for future treatments.
Researchers at Harvard University have captured high-resolution 3D images of human chromosomes, providing evidence to change the traditional X-like symbol used in textbooks. The images show that chromosome structure plays a crucial role in regulating gene transcription and cell division.
Researchers have shed light on the atomic resolution structure of the phage DNA tube, a crucial component of phage therapy. The 3D structure reveals a hollow tube with flexible linkers, allowing negatively charged DNA to pass through smoothly. This study marks a significant milestone in integrated structural biology.
A study by Duke researchers found that transcription factors tend to bind strongly to mismatched sections of DNA, which can lead to the accumulation of mutations in regulatory regions. This binding is thought to be energetically favorable due to the lower energy required to distort mismatched DNA.
Seth Shipman, a Gladstone Institutes investigator, has received the NIH Director's New Innovator Award to develop innovative technologies to edit mitochondrial DNA. His research could lead to new treatments for diseases caused by mitochondrial DNA mutations.
Scientists have identified long-concealed genetic mutations in tomatoes using a new technique called long-read sequencing. The analysis reveals that these mutations can alter key characteristics such as flavor and weight. By studying the impact of these mutations, researchers hope to create new tomato varieties with improved traits.
Researchers at the University of Halle have found a way to spontaneously generate molecules with uniform chirality in liquids, liquid-crystalline and crystalline materials. This breakthrough could lead to new active substances and materials science applications.
Researchers propose that modified nucleobases could have facilitated the emergence of rudimentary self-replicating systems by stabilizing short RNA molecule structures and providing catalytic activity. This could have increased the breadth of available functions for short RNAs.