Articles tagged with Genomic Instability
A new study found that caloric restriction reduces DNA mutations in mice, slowing the rate of mutations with age. The study showed that caloric restriction had the strongest impact on the least active genomic regions, suggesting that diet may play a role in genome health.
Researchers identified the misdirected immune response as a central driver of tissue degeneration in severe, rapid-aging disorders. By reducing this false alarm, they restored function across multiple biological systems, suggesting the body can cope with more DNA damage than assumed if inflammation is kept in check.
A new study by POSTECH researchers found that the protein tau interacts with DNA during cell division, forming condensates that capture microtubules. This interaction affects chromosome alignment and can lead to cellular abnormalities even in healthy cells.
A study published in Cancer Research has identified DPY30 as an epigenetic target that can sensitize pancreatic tumors to immunotherapy. By modulating DNA replication stress, DPY30 promotes the addition of activation signals at stressed replication forks, supporting cancer cell survival and proliferation.
Researchers found that cancer's powerful genetic on switches, called super-enhancers, drive intense gene activity, causing DNA breaks and stress. This can lead to accumulation of mutations over time, fueling cancer's evolution.
MSK researchers have developed a new method to study treatment resistance in high-grade serous ovarian cancer. By analyzing blood samples from 18 patients, they identified subpopulations of cancer cells with distinctive genetic features that contribute to recurrence. This approach may help develop targeted treatments for specific vulne...
Emerging research links microbial dysbiosis to aging, as dysbiosis accelerates DNA damage and telomere shortening. Therapeutic strategies targeting the microbiome may promote healthy longevity.
Cells employ a protein network to repress TE activity and keep themselves healthy. O-GlcNAc transferase (OGT) is a lead choreographer in this process, protecting cells from genomic instability by restraining TET activity.
Research highlights the interconnected relationship between aging, circadian rhythms, and cancer, with shared mechanisms including genomic instability, cellular senescence, and chronic inflammation. Modulating circadian rhythms may serve as a novel strategy to intervene in age-related functional decline and treat cancer.
A new study identifies loss-translocation-amplification chromothripsis as a key mechanism driving osteosarcoma tumour development and evolution. This discovery has significant implications for treatment options and patient outcomes, highlighting the importance of investing in studies exploring cancer mechanisms.
Scientists have discovered how a mutated ASXL1 gene disrupts normal blood cell development, leading to diseases such as clonal hematopoiesis and malignant leukemias. The study reveals that mutated ASXL1 causes heterochromatin dysfunction, silencing genes essential for blood cell maturation.
Researchers have discovered a major setback in the use of AZD7648 to promote precise gene editing, which causes massive genetic changes and genome instability. Despite this, scientists remain optimistic about advancing CRISPR-Cas technology to treat diseases.
Researchers found that genetic collisions between transcription and DNA replication lead to large tandem duplications in cancer cells, which can be identified through dosage imbalance. These duplicates are associated with poor patient survival and high correlation with mutations in genes TP53, CDK12, and SPOP.
Dr. Roger Lo has been awarded a $2 million NIH grant to investigate ways to prevent drug resistance in melanoma treatment and improve the effectiveness of MAPK inhibitors. The team aims to target genetic instability and immune evasion to stabilize the melanoma genome and make it more vulnerable to immune attacks.
Researchers at RIKEN Center for Biosystems Dynamics found multiple specialized types of DNA replication in early-stage embryos, including a period of instability prone to chromosomal copying errors. This discovery could lead to improved methods of in vitro fertilization (IVF) and better strategies for minimizing chromosomal abnormalities.
Researchers at the University of Bologna have identified a specific location and genomic context where DNA breaks occur due to topoisomerase I inhibition. This discovery could lead to new cancer treatments by inducing DNA damage and genomic instability in cancer cells.
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.
Purdue University researcher Hana Hall explores the role of R-loops in neurodegenerative diseases, including Alzheimer's, by investigating their impact on neuronal aging and DNA damage. Her work aims to understand how R-loop accumulation contributes to cellular stress and damage.
A new study found that PARP1 is involved in the repair of telomeres, which can lead to genomic instability and cancer. Impairing this process can lead to telomere shortening and increased risk of cancer. The findings challenge existing dogma and open up new possibilities for improving cancer therapies.
A massive study identifies new biomarkers for renal cell carcinoma subtypes, improving diagnosis and treatment. The researchers' integrative analysis of proteogenomic datasets reveals molecular features shared by clear cell and non-clear cell RCC tumors, as well as unique features to various subtypes.
A recent study has uncovered 145 genes crucial for genome stability, shedding light on genetic factors influencing human health over a lifespan. The research highlights the potential of SIRT inhibitors as a therapeutic pathway for cohesinopathies and other genomic disorders.
Research reveals chromatin's role in preventing DNA-RNA hybrid formation, which causes genomic instability and cancer. DNA-RNA hybrids are a risk factor in tumour development, suggesting potential use as an indicator of carcinogenic risk.
The study has shed light on how cats evolved into different species and how genetic changes relate to survival abilities like smell detection. It also revealed that cat genomes tend to have fewer complex genetic variations than other mammal groups, such as primates.
A new study reveals that autophagy plays a crucial role in the gradual loss of DNA content in diploid Saccharomyces cerevisiae cells undergoing chronological aging. The researchers found that only diploids survived, and autophagy induction was responsible for the DNA loss.
Researchers have sequenced the genomes of transmissible shellfish cancers, revealing high levels of genomic instability not seen in other cancers. The study focused on the common cockle, a species that belongs to one of the oldest groups of animals on Earth.
Researchers have discovered widespread genomic mutations and instability in transmissible cancers found in clams, which may explain their survival for over 200 years. The study highlights the clam's potential as a model for studying cancer evolution and developing novel strategies to block cancer in humans.
The study validates a comprehensive genomic profiling assay, NeXT Dx, which detects single nucleotide variants, indels, copy number alterations, and gene fusions. The assay demonstrates high analytic sensitivities and specificity, providing personalized recommendations critical to clinical decision-making.
Researchers at MD Anderson Cancer Center have engineered a new model of aggressive renal cell carcinoma, highlighting molecular targets and genomic events that trigger chromosomal instability. The loss of interferon receptor genes plays a pivotal role in allowing cancer cells to become tolerant of chromosomal instability.
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.
A recent study analyzed 7,301 metastatic breast cancer patients with MTAP loss, revealing younger age, higher TNBC cases, and BRCA1 mutations. The findings also suggest potential therapeutic agents targeting PRMT5 and MTA2 in MTAP-deficient cancers.
Researchers at Ulsan National Institute of Science and Technology (UNIST) have observed quasiparticles in a classical system made of microparticles driven by viscous flow. The hydrodynamic forces among the particles create pair excitations that propagate through the crystal, stimulating the creation of new pairs.
A research team led by Ivano Amelio found that the protein p53 acts as a key to maintaining genomic stability, preventing cancer-promoting mutations. Without p53, cells become more aggressive and prone to acquire genomic instability.
Researchers at Nagoya University have identified new agents involved in DNA damage tolerance pathways, including RFWD3, which may contribute to anticancer treatment. The study's findings suggest that inhibiting these pathways could sensitize cancer cells to conventional chemotherapeutic agents.
Researchers at IRB Barcelona have found that CRISPR/Cas9 gene editing can trigger cell toxicity and genomic instability, particularly in regions near the tumour suppressor protein p53. The study identified 3,300 targeted spots with strong toxic effects, highlighting the need for safer CRISPR reagents.
A recent study published in Aging-US reveals the crucial role of WRN in making choices between classical and alternative non-homologous end joining (NHEJ) DNA repair pathways. The research provides new insights into progeroid syndromes, such as Werner syndrome, and their connection to aging.
Researchers have developed a framework to analyze chromosomal instability in human cancers, characterizing 17 different types of signatures. These signatures can predict how tumors respond to drugs and help identify future drug targets. The discovery aims to improve survival rates for millions of cancer patients worldwide.
Researchers studied meiotic cohesin complexes' effect on chromosome structure and genomic integrity in embryonic stem cells. Maintaining adequate levels of REC8 and STAG3 factors ensures chromosomal stabilization and sister chromatid cohesion.
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.
A new method identifies proteins binding to R-loops, revealing the role of DDX41 in regulating R-loop levels and preventing DNA damage. Elevated R-loop levels increase cancer risk.
Scientists at La Jolla Institute for Immunology have discovered a link between TET enzyme deficiency and the formation of unusual DNA structures, such as G-quadruplexes and R-loops, which contribute to genomic instability. The study suggests that regulating these structures may be key to controlling cancer development.
CRISPR-BEST addresses the challenge of genetic instability caused by double-stranded breaks in genome editing. The new tool creates mutations in actinomycetes without DNA breakage, enabling efficient targeting of genes for bioactive compound production.
Researchers at The Wistar Institute have found that ARID1A is essential for telomere cohesion, which helps maintain genomic stability. Inactivation of ARID1A leads to loss of telomere cohesion and selects against gross chromosome alterations.
A new study by Tel Aviv University researchers has identified a protein called ubiquilin-4 as a biomarker for genome instability. Elevated levels of this protein in tumor cells accelerate cancer progression and make them resistant to common treatments.
Researchers reveal histone 1 prevents accumulation of lethal R-loops and genome instability in heterochromatin, contradicting long-held hypothesis.
A study by Nagoya University researchers reveals high levels of genetic heterogeneity and DNA instability in schizophrenia patients, suggesting a possible link between copy number variations (CNVs) on chromosomes 1, 15, 16, and 22 and disease mechanisms.
A study of 100 pancreatic cancer genomes identifies four subtypes, including 'stable', 'locally rearranged', 'scattered', and 'unstable' genomes. The analysis suggests that patients with 'unstable' genomes respond well to platinum-based drugs and PARP inhibitors, offering a promising lead for personalized treatment.
Scientists at IRB Barcelona created a Drosophila melanogaster fly model that reproduces the steps of healthy cell transformation into cancer. The model can help identify genes and molecules involved in cancer progression, potentially leading to specific treatments for cells with genomic instability.
Researchers at WSU aim to uncover the biological cause of Gulf War Illness by studying genomic instability. High levels of chromosomal aberrations have been detected in GWI patients, similar to those found in cancer patients. The study may lead to a simple blood test for diagnosing GWI.
Researchers identified a short tandem array of telomeric repeats bound by a Rap1/Trf2 complex as sufficient to impede non-homologous end joining at human telomeric DNA ends. This finding opens the door to understanding mechanisms that initiate genomic instability in cancer cells.
Awards honor Alt's groundbreaking discoveries on genomic instability, leading to new directions in cancer prevention. His work has sparked extensive additional research and transformed our understanding of oncogene amplification and translocation.
Telomeres protect chromosome ends, but when they're short, enzymes called exonucleases nibble away, causing gene loss. This discovery challenges the long-held assumption that chromosome fusion is the primary mechanism behind genomic instability.
Researchers found that loss of <i>H2AX</i> gene leads to increased genomic instability and cancer in mice. The study suggests that <i>H2AX</i> deficiency may be a major player in cancer-causing genomic instability, particularly in the context of human tumors with alterations in chromosome 11.
The Drosophila melanogaster fruit fly genome has been sequenced in full, with a focus on physical maps to ensure accuracy. The completion of the genome sequence is significant, as it reveals connections between fruit fly and human genes, offering insights into diseases such as cancer, kidney disease, and metabolic disorders.
A new study by Whitehead researchers found that reduced DNA methylation may be responsible for decreased genomic stability and increased mutation rates in cancer cells. This could lead to a better understanding of the molecular origins of cancer.