Articles tagged with Dna Damage
Researchers at Kyoto University have discovered a phosphorylation pathway that regulates meiotic double-strand break activity, ensuring genome stability. Enzymes ATR kinase and PP4 phosphatase work together to maintain a balance of DNA breaks, allowing for successful meiosis.
Researchers discovered that combining a new target with an old chemotherapy drug can reduce resistance and potentially improve treatment outcomes for small cell lung cancer. The study used mouse models to show that inhibiting a protein called SMYD3, along with cyclophosphamide, stopped tumors in their tracks.
Researchers from Boston Children's Hospital found that aging heart muscle cells accumulate new genetic mutations over time, but lose the ability to repair them. This accumulation of mutations can push the heart past a tipping point into disease.
Researchers at the University of Cambridge discovered that nearly three-quarters of stem cell lines carry substantial DNA damage, which could compromise their use in research and cell-based therapies. The study found that whole genome sequencing is essential for confirming if cell lines are usable.
A recent study published in Cancer Research identified a unique vulnerability in certain high-risk cancers that can be exploited for targeted therapy. Researchers found that cancer cells with alternative lengthening of telomeres (ALT) have a common weakness, leading to resistance to DNA-damaging agents and chemotherapy.
A mutated zebrafish eye provides a glimpse into the role of banp in preventing cell death and regulating the cell cycle. The study found that banp promotes the expression of 31 genes involved in DNA repair, tumor suppression, and cell duplication.
Researchers develop technique to control pH at microsites, enabling high-throughput biomolecular synthesis and enzymatic DNA synthesis. This allows for increased experimental throughput and speeding up processes in DNA synthesis.
A new study reveals that oxidative damage to telomeres can trigger cellular senescence, leading to the development of 'zombie cells'. Researchers found that damage at telomeres disrupts DNA replication and induces stress signaling pathways, contributing to age-related diseases.
Researchers at Karolinska Institutet have improved the ability of a protein to repair oxidative DNA damage, creating a new drug development concept. The technique can lead to improved treatments for diseases involving oxidative stress.
Researchers identified DNA damage-inducible transcript 4 (DDIT4) as a critical factor regulated by histone deacetylase 4 (HDAC4) in skin aging. Overexpression of HDAC4 rescued cells from senescence, while DDIT4 overexpression reversed changes associated with aging.
Scientists have discovered that oxidative stress, a process disrupting genetic code by damaging DNA, is the culprit behind inflammation's link to cancer. The study provides crucial insights into roles of inflammation and oxidative stress in certain cancers.
Researchers at the University of Birmingham have discovered two new DNA repair genes, SETD1A and BOD1L, which can make cancer cells more sensitive to radiotherapy. These findings may lead to improved treatment efficiency and patient outcomes by allowing clinicians to identify targeted treatments for specific patients.
Researchers at Medical University of South Carolina found that blocking the enzyme polymerase reduces the virus's ability to multiply. This discovery exposes an Achilles' heel that could be targeted with a therapeutic. Polymerase is a key tool for DNA replication and repair, making the virus vulnerable to disruption.
Researchers found that a critical enzyme called AAG plays a crucial role in making cells respond to stress by communicating between different parts of the cell. This new understanding could lead to improved cancer treatments using alkylating agents, a class of drugs commonly used in chemotherapy.
A new study published in Ecotoxicology and Environmental Safety reveals that microplastics in the Cauvery River may be causing growth defects in fish, including skeletal deformities and DNA damage. The study found that pollutants from slow-flowing and stagnant sites caused significant harm to zebrafish embryos.
Researchers at the University of Otago have developed a new method for obtaining ancient genomic data from small vertebrate remains, causing no visible damage to the underlying bone. The study presents a breakthrough in analyzing materials in museum collections and rare, valuable specimens.
A self-contained experiment is being sent to the International Space Station to investigate stress and DNA damage caused by space travel. The goal is to determine if genomic damage experienced during space travel is linked to the silencing of a specific gene, beta-arrestin1.
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.
Researchers have discovered a mechanism to increase the effectiveness of base excision repair (BER), a pathway involved in repairing damaged DNA. By capturing polymerase beta at a precise point in the cell life cycle, the enzyme creates new genetic material 17 times faster, suggesting an interlocked function between its two roles.
Aging egg cells accumulate damage to genetic material, preventing maturation and fertilization. Researchers have identified a key process causing this damage and found that anti-viral drugs can reverse it.
Mblue Labs releases a coral-safe, broad-spectrum sunscreen containing Methylene Blue, which repairs photo-aging and delays skin aging. The product replaces Oxybenzone, a chemical UV blocker linked to coral reef destruction, providing safer protection for consumers and the environment.
A new study from Karolinska Institutet shows how certain RNA molecules control the repair of damaged DNA in cancer cells. The researchers discovered two molecule types that interact to regulate an enzyme involved in DNA-repair mechanisms, leading to faulty DNA repair in cancer cells.
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.
Researchers have identified nine new factors involved in DNA repair, a critical process for human cell health. The findings can help develop new cancer drugs and improve existing therapies.
A multidisciplinary team of researchers has identified a key signaling pathway involved in tumor formation in lymphoma. The study found that the SENP6 gene controls DNA repair and its loss leads to cancer development.
Researchers found that plants have evolved a way to protect their most important genes from mutation, which has significant implications for understanding crop domestication and cancer. The study discovered non-random patterns in DNA mutations, with essential genes overrepresented in regions where mutations are rare.
Phages weigh all options and make an informed decision whether to exit the dormant state and attack their bacterial host. The study found that some phage families have developed a complex decision-making strategy, receiving information from neighboring bacteria and controlling communication via arbitrium.
Scientists from CNIO and Massachusetts General Hospital have developed new approaches to visualize DNA repair by analyzing hundreds of proteins at once. They discovered nine new proteins involved in DNA repair and identified key players in the process, which could lead to improved cancer treatments.
A UMass Chan clinical trial demonstrates the safety and efficacy of an antisense oligonucleotide in suppressing mutant C9ORF72, a common cause of familial ALS. The treatment led to reduced levels of neurotoxins and stable or improved ALS functional scores.
A marine-dwelling creature, Trichoplax adhaerens, has been found to resist cancer and repair DNA after radiation damage. Researchers are exploring its unique properties to develop new therapies for cancer.
Researchers developed a new metal-organic framework treatment that effectively eliminates H2O2-secreting bacteria, alleviating pulmonary injury and preventing systemic sepsis. The treatment, nFMs@Amp, uses Fe3+-doped metal organic frameworks loaded with antibiotic ampicillin to target and kill the bacteria.
A study found that men with Li-Fraumeni syndrome have a 25-fold increased risk of developing aggressive prostate cancer, and those with inherited TP53 variants are diagnosed at a young age. Routine screening for prostate cancer is recommended for these individuals.
A new study by UCI researchers confirmed the connection between impaired DNA repair and increased DNA damage in spinocerebellar ataxia type 7, a condition that affects coordination and movement. The study identified PARP inhibitors as potential therapeutic targets for the currently incurable disease.
Cryo-EM study reveals details of DNA repair mechanism translesion synthesis (TLS), allowing cells to survive with mutations. Key protein complex Pol K - PCNA interaction modulated by ubiquitination facilitates recruitment of TLS polymerase to damage sites.
Researchers discovered a mechanism of sleep in zebrafish and mice, linking PARP1 protein to signaling the brain for sleep. Six hours of sleep per night is sufficient to reduce DNA damage, highlighting the importance of adequate sleep for efficient DNA repair.
Researchers found that blood stem cells, which are among the smallest cells in the body, lose their ability to perform their normal function — replenishing the body’s blood cells — as they grow larger. However, when the cells were restored to their usual size, they behaved normally again.
Researchers have developed a simple, postal urine test that can detect signs of urothelial cancer in Lynch Syndrome (LS) patients, who are at high risk of developing tumors. The test uses cell-free DNA shed into the urine to identify DNA from tumor cells with characteristic microsatellite instability.
Researchers at Johns Hopkins Kimmel Cancer Center found a new treatment option for inoperable pleural mesothelioma using immunotherapy agent durvalumab combined with platinum-based chemotherapy. Patients with epithelioid tumors experienced higher survival rates, including some who remained tumor-free after completing the trial.
GIST scientists utilized latest advances in single molecule detection to observe the enzymatic activity of gene repair. The study revealed that ExoIII has an affinity for damaged DNA sites, creating a gap that Pol I fills. Understanding this mechanism may lead to technologies for targeted gene repair and drug development.
Researchers found that UVB phototherapy increases levels of romantic passion and aggression in both men and women. Exposure to sunlight affects the endocrine system's regulation of sexual hormones.
Researchers identified DSS1 as a critical protein in breast cancer progression and found that depleting it makes cancer cells more responsive to lower doses of anti-cancer drugs. This technique may reduce drug-induced side effects in breast cancer patients, providing a safer treatment option.
Fels and Fox Chase researchers found specific TET2 and DNMT3A mutations in leukemia patients that affect DNA repair pathways. These mutations make leukemia cells sensitive to PARP inhibitors, a type of targeted therapy, while others are resistant. The study aims to develop personalized therapies for patients with these mutations.
Researchers found that UVB radiation from the sun causes chemical changes to DNA, leading to disease-causing mutations. This discovery sheds light on the origins of melanoma and highlights the importance of prevention efforts.
Research suggests that telomere shortening drives intestinal inflammation in inflammatory bowel disease (IBD). Telomere erosion is positively associated with disease severity and may underlie disease recurrence.
Researchers have developed a novel method for studying DNA repair in yeast cells that can be conducted entirely in space, using CRISPR/Cas9 genome editing technology. The technique successfully demonstrated the viability of the new method on the ISS, paving the way for extensive research into DNA repair in space.
A study from West Virginia University suggests that pollutant exposure can lead to increased free-radical damage, which speeds up aging. This occurs when pollutants break down into highly reactive molecules that damage biomolecules, leading to premature aging.
Researchers at Goethe University Frankfurt discovered that Nox4, an enzyme producing H2O2, prevents cancer by keeping phosphatases out of the cell nucleus, thus allowing DNA damage to be recognized and repaired. In its absence, mutated cells multiply uncontrollably, leading to tumour formation.
Scientists have identified specific regions within the DNA of neurons that accumulate a certain type of damage, which appears to be unique to neurons. This discovery challenges current knowledge about the cause of DNA damage and its potential implications in neurodegenerative diseases.
Researchers at Baylor College of Medicine have identified 25 rare genetic variants associated with increased risk of lung cancer. These variants, which include insertions and deletions, lead to genomic instability and increase DNA damage, suggesting a potential role in cancer development.
A research team from Cologne has discovered a mechanism that restores cell function after genome damage by altering the DNA structure. The discovery involves a double occupation of two methyl groups on the histone protein H3K4me2, which enables genes to be reactivated and proteins to be produced after damage.
New research reveals laundry lint can cause significant tissue damage in Mediterranean mussels, including deformity, swelling, and digestive tubule loss. The study also finds reduced filtering ability and increased DNA strand breaks.
Studies published in the Journal of Experimental Medicine found that sticky webs of DNA released from immune cells cause much of the tissue damage associated with severe COVID-19. Blocking the release of these DNA webs could be a new therapeutic target for managing severe forms of the disease.
A team of researchers at KIT demonstrated that DNA damage can occur up to 30 DNA building blocks away from the entry point of UV radiation. This finding has significant implications for understanding DNA photodamage and its role in skin cancer.
A team of scientists has discovered how the enzyme SPRTN recognizes and cleaves DNA-protein crosslinks, which are formed when proteins attach to DNA. This new mechanism is crucial for cell viability and the suppression of tumorigenesis, and has implications for cancer therapy.
Researchers discovered that DNA damage in moss Physcomitrella patens causes cells to reprogram into stem cells, producing an entire plant body. This phenomenon is a new adaptive strategy for plants under harsh environments.
Researchers have discovered how XPG binds to and reshapes damaged DNA, illuminating its role in maintaining genetic stability. The protein's unique 'sculpting' activity allows it to bend DNA, recruiting proteins to fix damage, and may help prevent cancer by supporting homologous recombination.
Researchers found persistent DNA damage in placentas of mice with cohesin mutations, leading to senescence and pro-inflammatory cytokines affecting embryonic growth. Targeting cytokine signaling may be a way to protect the health of the placenta and promote healthy pregnancies.
Researchers screened 163,000 DNA mutations in C. elegans roundworms to understand the interplay between DNA damage and faulty repair systems. The study found that multiple DNA repair pathways work together to prevent mutagenesis, and a single mutagen can leave varying mutational signatures depending on the faulty repair system.
A research group at Kumamoto University has discovered a novel gene, C19ORF57, involved in meiotic recombination during sperm production. The gene plays a crucial role in repairing DNA damage, which is essential for maintaining male fertility.
A Monash University study found that inhibiting cell death pathways in oocytes allows them to rapidly repair DNA damage, maintaining fertility. Double-strand breaks are the most harmful type of DNA damage, promoting genetic instability if not repaired correctly.