Articles tagged with Genome Organization
Researchers have discovered a new mechanism that helps cells protect genetic information during DNA replication, preventing errors and preserving genome integrity. This discovery could have implications for precision oncology and our understanding of the molecular machinery responsible for copying DNA.
Mitotic chromosomes may be formed from pre-existing condensed chromatin domains, known as 'building blocks', rather than being created from scratch during cell division. This view integrates the chromosome scaffold model with modern understanding of condensins and physical forces shaping chromatin.
Researchers used AI and single-cell technology to study the 3D genome in brain cells from individuals with Alzheimer's disease. They found increased compartment mingling, reduced gene activity, and altered brain cell organization. The study identifies 3D genome organization as a key layer of Alzheimer's biology.
A study by John Innes Centre researchers reveals that inner tissues play a crucial role in shaping plant organs, contradicting the widespread assumption that external layers control growth. By analyzing cell division orientation and gene editing techniques, they discovered genes affecting stem thickness in Arabidopsis.
Researchers Dfam and Repbase collaborate to create a unified open platform for transposable element annotation, providing decades of expertly curated data freely available. The integration will support large-scale genome annotation, evolutionary research, and biomedical applications.
A recent study reveals that linker histone H1 binds to nucleosomes and creates a dynamic, flexible network that condenses chromatin. This new understanding suggests that chromatin behaves like a liquid-like 'glue' rather than a rigid structure.
Researchers have discovered a sophisticated 3D scaffold of DNA being built before the genome fully awakens, controlling gene expression and preventing developmental defects. The breakthrough technology, Pico-C, enables high-resolution mapping of the genome's shape, shedding light on its role in human health.
Researchers have uncovered a previously unknown genomic structure that emerges in developing germ cells, crucial for successful meiosis. This discovery may help create functional sperm and eggs outside the body, paving the way for new treatments for infertility.
Research from Salk Institute scientists shows that DNA's dynamic folding process affects gene regulation and expression, with specific regions unfolding at different rates to regulate cell type-specific functions.
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.
A 15-member research team has gained insight into the DNA of the Northern root-knot nematode, a parasitic nematode that causes significant economic damage to many crops. The study reveals an unusual DNA repeat at the ends of its chromosomes, which may provide a clue to its ability to infect a wide range of plants.
Researchers have discovered a new class of BRCA1 mutations that can be targeted by HSP90 inhibitors, potentially improving treatment outcomes for patients with breast cancer. The study found that these mutations are more resistant to PARP inhibitor treatment but can be overcome with low-dose HSP90 inhibition.
A renowned geneticist, Dr. Martin Alda, has made a groundbreaking discovery that bipolar disorder is composed of multiple genetically distinct disorders, transforming treatment approaches worldwide. His research also highlights the importance of combining basic research with clinical observations to advance psychiatric care.
Dr. Rentería's Australian Parkinson's Genetics Study (APGS) includes nearly 20,000 volunteers, generating a comprehensive genetic database to understand Parkinson's disease variability. He incorporates wearable sensors and digital biomarkers to address clinical heterogeneity.
A recent study reveals that ORC2 subunit regulates epigenetics and gene expression by compacting chromatin and attracting repressive histone marks at some sites, but activating gene expression at others. This regulation also prevents CTCF binding at certain sites, leading to changes in chromatin structure and gene expression.
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.
Scientists at Boston Children's Hospital discovered that native nucleosomes contain a physical code governing their role in genome architecture. This insight could lead to new understanding of the maintenance of cellular function and the development of diseases like autoimmunity and cancer.
A new genomics tool, refget Sequence Collections, streamlines genomic research by standardizing reference sequences. This enables scientists to compare data more efficiently and accelerate medical breakthroughs.
Researchers at MD Anderson Cancer Center made several key discoveries, including the spatial organization of cancer-associated fibroblasts across various cancers and a study on treatment resistance in SMARCA4-mutant lung cancer. These findings highlight the importance of investigating cell populations in their spatial context to better...
Dr. Bing Ren, a renowned expert in genomics and epigenetics, joins the New York Genome Center as its new scientific director and CEO. His groundbreaking contributions will focus on translating genomic research into actionable insights for improving human health.
Researchers developed a new tool called SigRM to analyze single-cell epitranscriptomics data, enabling the study of RNA modifications in individual cells. This can provide valuable insights into gene regulation and its impact on health and disease, particularly in complex conditions like cancer.
University of Toronto researchers developed a new computational method to study genome organization, uncovering previously unknown patterns in human chromosomes. The method uses machine learning to analyze high-throughput chromosome conformation capture data and sheds light on chromosomal re-organization leading to disease development.
Researchers found that active genes contribute to the stirring motion of the genome, with compaction affecting gene motion. The study reveals unexpected connections among gene activity, genome packing, and genome-wide motions.
The study of turtle genomes provides crucial information for the development of effective conservation strategies and the understanding of the evolution of sex chromosomes. Researchers have identified a novel three-dimensional chromatin conformation in both lineages, allowing for centromere-telomere interactions.
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 from the Kind Group have gained new insights into the mechanism behind the spatial organization of DNA within cells of early embryos. They found that DNA regions near the nuclear edge are repelled by a specific protein modification, leading to an unusual organization that enables cells to differentiate into various types.
Researchers analyzed genome of Oikopleura dioica, finding it has wildly different languages despite identical physical characteristics. The 'scrambling' phenomenon suggests genes are regulated differently, challenging assumptions about species identity.
Researchers at the University of Toronto have discovered a DNA repair mechanism that uses nuclear metamorphosis to fix double-strand breaks in human cells. This discovery has significant implications for cancer treatment and premature aging, and may lead to new therapeutic avenues.
Researchers at La Jolla Institute for Immunology and Massachusetts General Hospital mapped the genome to understand how IKAROS controls healthy B cell development. They found that IKAROS solves a big problem in B cell development by bringing together far-away genes through looping, leading to proper expression and antibody production.
Researchers from Karolinska Institutet and the Max Planck Institute have identified a new mechanism for DNA folding, revealing how the Smc5/6 complex regulates chromosomal organization. This discovery provides new insights into normal development and disease prevention.
Researchers at the CNIO have elucidated a key point about how cohesin attaches to DNA and forms loops. The study suggests that NIPBL is not necessary for cohesin to bind to DNA, but only for it to move and form DNA loops. This finding may be important in understanding Cornelia de Lange syndrome.
Researchers at Rice University's Center for Theoretical Biological Physics discovered Aedes aegypti's chromosomes have a unique 'liquid crystal' structure, unlike other species. This finding may provide insights into the functioning of genomes and gene regulation.
A study by Universitat Autònoma de Barcelona reveals the three-dimensional structure of mammalian genomes is more diverse than previously seen, with different patterns of chromosome folding identified in various species. The research provides new interpretative hypotheses about the plasticity of the genome and its role in evolution.
Researchers have discovered physical forces and hydrodynamic flows that ensure proper functioning of life's blueprint. The study provides insights into the genome's organization and function, shedding light on its biophysical origins. This knowledge is crucial for understanding genetic disorders and human diseases.
Researchers reconstructed the genome organization of the earliest common ancestor of all mammals using high-quality genome sequences from 32 living species. The study reveals that the mammal ancestor had 19 autosomal chromosomes and conserved gene blocks across modern mammalian genomes.
Researchers have reconstructed the genome of the common ancestor of all mammals, revealing key features such as 19 autosomal chromosomes and 38 sex chromosomes. The study provides insights into the evolutionary stability of gene order and orientation on chromosomes over millions of years.
Researchers developed a new mathematical technique to analyze cell nucleus organization, revealing self-sustaining transcription clusters that play a key role in maintaining cell identity. This understanding may expose vulnerabilities for targeting cancer cells and reprogramming them to stop uncontrollable cell division.
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 discovered that a genetic mutation causing odd-shaped nuclei may lead to earlier diagnosis and treatment of certain leukemias. The study found that the loss of nuclear Lamin B1 induces defects in nuclear morphology and genome instability, setting the stage for cancer.
Researchers identified two classes of DNA elements: tethering and insulators, which work together to regulate gene expression. Tethering elements facilitate timely activation by bringing enhancers close to target genes, while insulators prevent interference between neighboring genetic loci.
A new algorithm developed by Carnegie Mellon University researchers offers a powerful tool for illustrating genome folding in cell nuclei. The Higashi algorithm analyzes chromatin interactions using single-cell Hi-C technology, revealing detailed variations in genome organization from cell to cell.
Researchers at Universitat Autonoma de Barcelona discover dynamic changes in genome organisation affect male germ cell development and fertility. Chromosomal rearrangements alter chromosome folding, impacting meiotic recombination and genetic diversity.
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.
Eukaryotic chromosomes are separated into active euchromatin and inactive heterochromatin by interactions between the two chromatin types. The researchers discovered that heterochromatin core serves as a microlens condensing light in nocturnal retinas.
Scientists discovered that altered cohesin SA2 variant influences gene expression and favours loss of differentiation in tumour cells. The two cohesin variants have distinct functions, with SA1 involved in topological domains and SA2 regulating gene expression through local chromatin loops.
Researchers at the Centre for Genomic Regulation found that genome architecture influences gene expression during cell reprogramming. The study reveals that transcription factors promote chromatin changes before gene activation, suggesting a new role in controlling cell fate.
Researchers at The Wistar Institute discovered how the genome's three-dimensional architecture changes during the cell cycle. The study found that condensation and de-condensation occur gradually, with larger domains forming during mitosis.
Scientists have discovered that the 3D organisation of the genome arises when the first zygotic genes are transcribed, and these boundaries are maintained throughout development. This finding helps explain why the TAD organisation of genomes is similar across tissue types and evolutionary conserved regions between species.
Researchers developed a new technique to study three-dimensional genome organization in individual cells, revealing differences between maternal and paternal genomes. The study provides insights into the earliest stages of embryogenesis and may help understand totipotency and reprogramming of somatic cells.
Researchers discover that the genome's three-dimensional organization and proximity of broken chromosome ends affect where they reconnect. The study highlights two guiding principles: cellular spatial heterogeneity and proximity, which govern chromosome rearrangements in cancer and normal cells.
Researchers at UC San Diego have created the first 3D image of an antibody gene, shedding light on the human genome's three-dimensional structure. The study uses geometry to resolve the structure of a genetic locus, revealing 'flower-like' structures connected by linkers that generate diverse antibodies.