Articles tagged with Chromatin
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Researchers at Macquarie University have discovered how superbug A. baumannii survives harsh environments and resists antibiotics by exploiting its strong drug pumps to expel essential metals from the cell. Disrupting this master regulatory protein, DksA, breaks the pumping system and allows for control of the bug.
A research team led by Dr Gary Ying Wai Chan reveals the function of enzyme ANKLE1 in cutting chromatin bridges, preventing DNA damages and autoimmunity. This discovery has significant implications for understanding immune responses and developing new strategies to prevent diseases such as cancer and autoinflammatory disorders.
Cancer develops when genome doubling leads to chromatin disorganization, promoting oncogene activation and genomic instability. Researchers found that WGD causes sub-compartment repositioning and loss of chromatin segregation.
Researchers have elucidated a mechanism that makes tiny plant stem cells destined to give rise to stomata, cellular valves of plants. The discovery reveals two DNA codes and regulator proteins working together to lock in the fate of a plant cell.
Researchers found that longer chromosomal arms are always thicker throughout eukaryotic species, providing insights into mitotic chromosomal structure. This study challenges current perspectives on mitotic chromosome formation and may lead to new ways to prevent chromosome miscarriage and cancer cell formation.
Scientists have developed an AI method to pinpoint cells indicative of Alzheimer's disease based on DNA packing in mouse brain images, offering a potential early detection tool. This approach combines multi-scale imaging with artificial intelligence to identify biomarkers for aging-related diseases.
UVA researchers developed a new tool to analyze genetic data, reducing noise and bias in cancer diagnosis. The tool uses mathematical modeling to identify patterns in chromatin, helping scientists detect tiny numbers of disease cells.
Researchers found drastic differences in microglia marker Iba1 and factors influencing Sirt1 levels and activity between elder groups. Preserving microglia and Sirt1 functional efficiency is crucial for longevity.
Researchers at John Innes Centre discovered a mechanism of flowering plant sperm compaction using histone protein H2B.8. This mechanism allows for moderate nuclear condensation without compromising gene activity, essential for immotile sperm and pollen tube travel.
Researchers from Children's Hospital of Philadelphia used advanced mapping techniques to identify causal genes and target pairings in the pancreas linked to type 2 diabetes. The study revealed alpha and acinar cells play a greater role in disease development than previously thought.
A team of researchers found that chromatin motion on damaged DNA sites moves faster than those away from damage, with the group moving as a unit over short distances. This coherent movement is crucial for effective DNA repair, preventing damaged DNA from harmful contact and improving accuracy.
Researchers at HHMI's Janelia Research Campus have discovered a new type of synapse between neurons and their primary cilia, which allows for long-term changes in the cell's chromatin. This discovery could help scientists better understand how cells communicate and may lead to the development of more selective medications.
Researchers at CeMM have discovered that targeting SMNDC1 in alpha cells can induce insulin production, a potential new approach for treating diabetes. The study identified a key molecular mechanism regulating insulin hormone production and its essential role in the treatment of diabetes.
Researchers found that cells in diseased connective tissue lose their ability to reorder DNA information correctly, leading to cell dysfunction. The study suggests that epigenetic treatments could restore healthy genome organization and may be effective treatments for conditions affecting dense tissues.
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 at Nagoya University created a 3D model of the human genome structure, analyzing its dynamics and functions. The study provides new insights into chromatin distribution, cell division, and transcription regulation, shedding light on cellular processes and potential disease mechanisms.
Researchers at the Center for Genomic Regulation (CRG) found that chromatin, a genetic architecture that protects DNA and regulates gene expression, originated in ancient microbes between 1-2 billion years ago. This eukaryotic innovation has been essential for life since its emergence.
Researchers discovered that chromatin entropy increases during aging, leading to epigenetic dysregulation and cellular senescence. The study found that aberrant expression of placenta-related genes is a key driver of cellular aging.
Researchers at the University of Illinois Chicago found that gene editing can reverse epigenetic changes in the brain caused by adolescent binge drinking, leading to a decrease in anxiety and excessive drinking behavior. The study used CRISPR-dCas9 technology to manipulate histone acetylation and methylation processes at the Arc gene.
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 developed a new genomic technology to analyze DNA, RNA and chromatin from a single cell, providing a comprehensive database for better understanding of brain diseases. The technology helped identify 63 cell types in the human frontal cortex region.
A new fluorescent DNA label has been developed to visualize disrupted DNA architecture in cancer cells, with promising results for improved cancer diagnoses and risk stratification. The study showed that the label can distinguish normal tissue from precancerous and cancerous lesions.
Researchers used Hi-C sequencing to identify three-dimensional chromosome structures in 11 carnivore species, showing conserved chromatin structures across families despite millions of years of evolution. This approach could facilitate identifying related genes and placing them in context.
A research group at the University of Helsinki has discovered the logic controlling gene regulation in human cells. They found that individual transcription factors contribute to gene regulation in an additive manner and identified regulatory elements that function within closed chromatin regions.
A comprehensive study has revealed over 7,000 human transcription factor (TF) protein-protein interactions, with most playing important roles in transcriptional regulation. The study identifies groups of TFs with specific biological functions, such as chromatin remodelling and RNA splicing.
A recent study published in Developmental Cell reveals that Kras mutation causes chromatin rearrangement, leading to stem-like cell regeneration and tumor onset. The team discovered a protein complex called AP-1 as the mediator of this process, which can be targeted with small-molecule drugs.
The study found that cell nuclei become less solid and more liquid-like as they differentiate, allowing them to commit to a specific path. This change is linked to the aggregation of chromatin and fine-tunes how responsive the nucleus is to external forces.
Researchers discover a chromatin degrader that blocks cancer-causing genes, offering potential treatment for over 90% of prostate cancers. The study found that blocking the SWI/SNF complex slowed cancer cell growth and induced cell death, especially in tumors driven by FOXA1 or androgen receptor.
Researchers at Boston Children's Hospital propose using an existing drug to prevent NET formation, which can lead to severe inflammation in conditions like COVID-19, sepsis, and ARDS. The study shows that ricolinostat inhibits histone deacetylases, reducing NET formation and inflammation.
Researchers at Baylor College of Medicine discovered that KLF4 forms droplets in the cell nucleus that recruit other transcription factors to mediate gene expression. This process involves biomolecular condensation, where KLF4 interacts with chromatin regions to form a separate liquid phase.
Researchers found that Atf1 and Rst2 transcription factors reciprocally bind to DNA in fission yeast cells responding to glucose scarcity. This unique mechanism prevents both proteins from binding alone and integrates independent activation pathways.
The study used single cell technology to map epigenetic changes in different cells involved in coronary artery disease, revealing that genetic risk variants are particularly enriched in endothelial and smooth muscle cells. This research provides a new understanding of the role of these cells in transmitting susceptibility to the disease.
A University of Seville group discovered the mechanism by which BRG1 inactivation leads to genetic instability and tumour formation. The study reveals that the SWI/SNF complex plays a crucial role in resolving chromosomal conflicts, and its mutation can cause DNA replication defects and chromosomal breaks.
The eukaryotic cell nucleus has an organized layout, similar to a superstore, with DNA-packed into compact structures and molecules moving efficiently through channels. The chromatin fibers work like shelves, holding genetic information, while proteins move randomly within the channels according to Brownian motion rules.
Researchers at Max Delbréck Center for Molecular Medicine in the Helmholtz Association have made significant findings on the role of chromatin modulators in tumor cell identity changes. By using a combination of CRISPR and molecular reporter technology, they found that chromatin proteins significantly influence how tumor cells change t...
Scientists have created highly detailed 3D models of chromosomes for individual cells using a computational technique that uncovers spatial relationships between genes. These models provide valuable insights into how genes work together to drive biological processes, such as development and cell differentiation.
A new approach to studying DNA packaging allows scientists to study individual cells and uncover the underlying mechanisms of chromatin folding. The technique reveals that Drosophila fly cells have structured domains similar to those found in mammalian cells, but with more ordered structures.
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 at UW Medicine created two cell atlases that map gene expression and chromatin accessibility in human development, providing unprecedented data for understanding cell differentiation. The atlases identify 77 main cell types and approximately 650 cell subtypes, shedding light on the regulatory 'grammar' of the cell.
Researchers found that epigenomic modifications, specifically changes to chromatin structure, control the encoding and retrieval of memories. The study reveals a four-stage process where genes become activated and primed for expression during memory recall.
Researchers identified thousands of potentially functional SNPs associated with changes in gene expression, highlighting the unique value of using iPSC-derived neurons as a model. The study advances understanding of genetic causes of neuropsychiatric disorders and offers a path to novel disease treatments.
Researchers at MIT and Harvard University have mapped out an additional layer of control guiding tumor evolution through epigenomic alterations. They identified 11 chromatin states that cancer cells can pass through as they become more aggressive, and found a key molecule linked to advanced lung cancer forms.
Scientists have developed a new approach to chromatin immunoprecipitation (ChIP) called FloChIP, which uses microfluidics to automate and lower the cost and complexity of the technique. This method can perform multiple ChIP-seq assays simultaneously and reproducibly in an automated way.
A new sequencing method has been developed to map the spatial organization of DNA in the cell nucleus, revealing areas prone to mutation and damage. The technique identifies a continuum of increasing activity from the nuclear periphery towards the center, challenging previous assumptions about inactive chromatin's location.
Researchers found that male fruit flies adjust their scent sensitivity by altering a gene called fruitless in response to pheromone signals and social environment. This study may provide insights into treating sensory processing disorders like autism, as it reveals how organisms selectively tune into or block sensory input.
Researchers identified how the enzyme MOF orchestrates the HSC fate in erythropoiesis, revealing crucial role in regulating chromatin accessibility and gene expression. This discovery could lead to new therapeutic approaches for diseases such as leukemia or anemia.
A new method called RADICL-seq has been developed to assess the role of long non-coding RNAs in regulating gene activity and chromatin structure. The technique allows for comprehensive mapping of RNA-chromatin interactions, providing important insights into how RNAs contribute to genome regulation.
PML bodies are found to physically restrict access to DNA methylation enzymes, suppressing gene activation. The study sheds light on a new role of PML bodies in regulating gene expression by manipulating 3D nuclear organization.
Researchers analyzed ATAC-seq data from 404 cancer patients to correlate chromatin accessibility with tumor characteristics, age, sex, and survival rates. The study found that chromatin accessibility on the X chromosome is strongly dependent on patient sex, but not on age or tumor stage.
Scientists developed RADICL-seq to map genome-wide RNA-chromatin interactions, identifying distinct patterns of genome occupancy for different classes of transcripts. The study highlights the role of transcription in establishing chromatin structure and suggests a new understanding of non-coding RNA's regulatory function.
Researchers have elucidated the mechanisms that mediate the establishment of epigenetic histone modifications following cell division. The team found that methylation patterns influence each other and are associated with specific regions of the genome, known as domains.
Researchers uncover complex mechanisms controlling epigenetic modifications on histones after cell division. The study provides deeper insights into the inheritance of epigenetic marks and has implications for understanding cellular differentiation and tumor development.
Researchers have developed DNA-binding editorial assistants to open up genes obscured by chromatin packaging, enabling CRISPR editing. This breakthrough enhances CRISPR efficiency and moves towards genetic-based assaults on diseases.
A Northwestern University team discovered how chromatin folds at the single-cell level, revealing a 3D forest structure. This finding could help scientists understand chromatin's role in cancer and other diseases.
A Northwestern University study discovered an inverse relationship between patient survival and the plasticity of tumor cells. Cancer cells with disorderly chromatin packing are more likely to adapt to treatments, but researchers can now develop new therapies that target chromatin packing to make cancer cells more vulnerable.
Researchers have uncovered how histone chaperones use chemical energy to assemble chromatin, a critical process in gene expression regulation. The discovery sheds light on the misregulation of chromatin structures and their role in developmental disorders and cancers.
Researchers at Cincinnati Children's Hospital Medical Center identified the transcription factor activator protein 1 (AP-1) as critical to the formation of mature and fully functioning T cells. AP-1 helps open up chromatin, a twisted structure of DNA that controls cell activation.
Tardigrades' protein Dsup protects cells from X-rays and hydroxyl radicals by binding to chromatin and forming a shield. This mechanism may help develop animal cells that can live longer under extreme conditions.
The study found that neuronal activation leaves lasting epigenetic changes, creating a genomic memory of past experiences. These changes can be detected days after initial activation and may contribute to the formation of memories.
Research reveals that chromatin domains are not the sole determinant of gene expression, with many genes resistant to rearrangements. The study challenges a current dogma in the field and raises questions about other mechanisms controlling enhancer-target interactions.