Articles tagged with Dna Damage
New research reveals how alcohol causes permanent genetic damage to blood stem cells, leading to cancer. The study found that acetaldehyde breaks and damages DNA within these cells, altering chromosome sequences and increasing the risk of certain cancers.
Researchers found that low-dose X-ray treatment does not induce genome instability or DNA damage in stem cells. Instead, these cells proliferate and maintain their health, contradicting previous assumptions about the harm caused by ionizing radiation.
A diabetes drug has been found to improve DNA repair in cells affected by Xeroderma pigmentosum, a rare genetic disease. The drug, acetohexamide, degrades the DNA repair enzyme MUTYH, triggering an NER-independent mechanism for removing UV-induced DNA damage.
Cells can sense and mend damaged DNA caused by certain chemotherapy drugs. Researchers discovered a previously unknown repair complex that targets this type of damage. This finding could lead to more effective chemotherapy treatments by amplifying the killing power of existing drugs.
Researchers at Osaka University have discovered a key role for protein SCAI in selecting between DNA repair mechanisms, NHEJ and HR, in response to damage. The study found that SCAI promotes the recruitment of HR proteins by binding to 53BP1.
A new study reveals that tadpoles living in low-temperature environments are more susceptible to DNA damage from UV radiation. This increased risk can lead to mutations and cell death, contributing to the global amphibian extinction crisis.
Astronauts are exposed to DNA damage due to zero gravity and cosmic radiation; an automated diagnostic procedure is being adapted for use in space, promising constant conditions for each sample. The device could also be used to evaluate the effects of radiotherapy.
Research suggests that night shift work impairs the body's ability to repair DNA damage caused by normal cellular processes. Suppression of melatonin, a hormone regulating the internal clock, is thought to be a key factor in this impairment. This may result in higher levels of DNA damage and potentially carcinogenic effects.
A study by the University of East Anglia warns that common water treatments containing colloidal silver may cause genotoxicity, damaging DNA. This can lead to reproductive issues and harm to future generations. The World Health Organization advises against its use as a primary water treatment.
New research reveals the role of enzyme-catalyzed decomposition in the antitumor effect of oxazaphosphorines. Activated oxazphosphorines are decomposed into phosphoreamide mustard and 3-hydroxypropanal, causing DNA damage that can lead to apoptosis.
A UConn study uses a novel device to detect DNA damage caused by e-cigarette vapor, finding that non-nicotine e-liquids can also cause DNA damage similar to filtered cigarettes. The researchers' findings raise concerns about the potential health risks of e-cigarettes.
A new technique developed by UNC School of Medicine scientists has mapped DNA damage caused by cigarette smoking at high resolution across the genome. The study provides a genome-wide map of the damage caused by benzo[α]pyrene, a chemical that accounts for about 30 percent of cancer deaths in the United States.
A CU Boulder study shows that some dividing human cells transmit low-level DNA damage to their daughters, causing them to enter a quiescent state previously thought to be random. The process is linked to the fate of daughter cells in subsequent cell cycles and has implications for cancer development and aging.
Researchers at the University of Maryland School of Medicine found that CHD4, a protein that usually prevents mutation, can become a protector of cancer cells. The protein plays a key role in DNA damage repair and may be linked to cancer progression.
Ben-Gurion University researchers found that SIRT6 protein levels are significantly lower in Alzheimer's patients and contribute to the onset of the disease. The study suggests a link between low SIRT6 levels and DNA damage accumulation, which may lead to neurodegenerative diseases.
Researchers at Johns Hopkins Kimmel Cancer Center discover that cancer cells hijack the DNA repair machinery to sustain their growth. By inhibiting this mechanism, they found potential targets for anticancer drugs and ways to track cancer recurrence.
A new study sheds light on the dark side of tumor suppressor gene p53, revealing that regulating genes Mdm2 and Mdm4 keep mutated p53 in check. The study shows that mutating these proteins can lead to an elevation of mutant p53, driving cancer growth.
Researchers have identified a key step in the molecular process of DNA repair and found a treatment to reverse aging, improve DNA repair, and potentially mitigate effects of cosmic radiation. Human trials are set to begin within six months.
Researchers at Aarhus University have described the structure and organization of the DNA control protein Rad26, revealing how kinase Rad3 is recruited to damaged DNA. This new knowledge may lead to the development of Rad3 inhibitors that make cancer cells more susceptible to chemotherapy.
Scientists from UNC School of Medicine have confirmed the functions in bacterial cells of two important excision repair proteins, Mfd and UvrD, using an advanced sequencing technique. The study provides a genome-wide map of excision repair in bacteria and highlights the potential for developing novel antibiotic drugs.
E-cigarette vapour exposure has been shown to be genotoxic and cytotoxic in human lung cells at high doses. In contrast, Vype e-cigarette vapour produced no DNA damage even at 28 times the equivalent smoke dose. The findings suggest that e-cigarettes are safer than smoking cigarettes.
A new study reveals that DNA, but not RNA, can contort itself into different shapes to absorb chemical damage and maintain genome stability. Researchers used advanced imaging techniques to visualize these tiny changes in DNA's double helix.
Researchers at Washington State University have developed a technique to visualize DNA damage caused by ultraviolet radiation, shedding light on its impact on skin cancer. The study provides clues on how sunlight triggers mutations and cancer, with implications for future therapies.
A recent study has shed light on the pathogenesis of DNA breakpoints associated with leukemia, revealing a mechanism that explains up to 90% of DNA damages in the most common type of childhood leukemia. The study identified a new high-risk subtype of leukemia characterized by abnormal expression of enzymes causing DNA damage.
A recent study published in BJU International found that smoking can cause DNA damage in sperm, leading to decreased fertility. The research included 20 non-smokers and 20 smokers and analyzed protein alterations in their sperm. Sperm with altered DNA may lead to health problems in offspring.
Researchers developed a new enhanced DNA imaging technique that can probe individual DNA strands at the nanoscale, providing orientation information and rotational dynamics. The technique offers more detailed information than current methods, enabling monitoring of DNA conformation changes and interactions with proteins.
High-intensity femtosecond laser pulses can cause DNA breaks and damage, with OH radicals being more likely to produce double strand breaks. The extent of damage can be controlled by varying the focal length of the focusing lens.
Researchers found a gene, MC1R, that influences how old people look to others. Carrying specific MC1R variants can make individuals appear almost 2 years older for their age, regardless of age, sex, skin color, or sun damage.
Researchers created knockout mice that lack a gene involved in DNA repair, shedding light on how cells fix broken DNA. The mice developed kidney and liver dysfunction due to impaired detoxification, highlighting the importance of FAN1 protein.
A breakthrough study has found that a bone drug can protect stem cells from the effects of ageing, extending their lifespan and maintaining their function. The drug, zoledronate, reduces DNA damage in mesenchymal stem cells, enhancing their survival and repair capabilities.
A team of researchers from Lehigh University and partners studied self-assembled complexes of DNA wrapped around single-wall carbon nanotubes using two-color photoluminescence spectroscopy. They confirmed a fast DNA autoionization rate and demonstrated that DNA holds the nanotube in water without changing its properties.
Researchers have developed a new way to detect chemical damage to DNA that can lead to genetic mutations and diseases. The method combines existing techniques to mark and copy DNA damage sites, preserving information on the location and type of damage.
Research by Rockefeller University scientists shows DNA strands increase mobility during repair, which may serve as a 'fail-safe mechanism'. This process is linked to chemotherapy and cancer treatment, and understanding its mechanisms could lead to new therapies.
Researchers discovered that a protective mechanism in egg cells prevents DNA-damaged eggs from being fertilized. This checkpoint helps prevent birth defects and miscarriages caused by damaged DNA. The study's findings offer new insights into the causes of infertility, birth defects, and spontaneous miscarriage.
Scientists have identified a new class of DNA repair enzyme that can recognize and remove positively charged lesions, including bulky ones. This discovery expands the understanding of DNA damage repair pathways and offers insights into alternative mechanisms for repairing genetic information.
A study led by Indiana University biologist Patricia Foster found that external environmental forces and oxidation are the primary threats to DNA repair, unlike previously thought. The research used whole genome analysis of spontaneous mutation in E. coli and showed that only loss of oxidative damage repair significantly impacted mutat...
Researchers at Rockefeller University have made new discoveries about the DNA repair process, uncovering previously unknown functions of histone H2AX. They found that a specific portion of the protein interacts with phosphorylated H2AX, facilitating the repair of double-stranded breaks in DNA.
A CNIO team has identified the origin of damage to induced pluripotent stem cells and developed strategies to reduce it, resulting in cells with less damage to their genome. This breakthrough improves the safety of iPS cells for use in biomedicine, potentially treating cardiovascular diseases, diabetes, and neurodegenerative disorders.
Researchers at the University of Toronto have discovered a motor protein complex that transports severely damaged DNA within cells. The discovery sheds light on how cancer operates and could lead to new anti-cancer drug targets.
A new Stanford study found cellular damage detectable in patients after CT scanning, suggesting potential long-term health effects. The research calls for safer imaging practices and increased research into the impact of low-dose radiation on human cells.
Researchers have documented the full spectrum of UV radiation-induced DNA damage in human skin cells, allowing manufacturers to develop targeted sunscreen products. The study's findings reveal that prolonged sun exposure leads to an accumulation of damaging free radicals, causing skin aging and potentially initiating skin cancers.
Researchers discovered how elongin A morphs between roles as facilitator and destroyer in response to stress and DNA damage. This understanding sheds light on diseases like cancer where genes are improperly turned on or off.
Researchers have identified novel non-platinum-based molecules effective against cervical, breast, ovarian, and lung cancers without harming healthy cells. These discoveries could lead to the development of safer anti-cancer treatments with a unique molecular mechanism.
Researchers discovered a direct link between telomere degeneration and myelodysplastic syndromes (MDS), a group of blood cell disorders. The study found that DNA damage caused by dysfunctional telomeres resulted in repressed expression of the RNA splicing gene SRSF2, affecting CMPs' ability to differentiate.
Researchers have discovered how to map more than one protein at a time when DNA is damaged, enabling the development of better and gentler cancer treatments. This new technique allows for a clearer picture of the reparatory process, facilitating the discovery of specific proteins involved in repairing damaged DNA.
Researchers discovered that damaged DNA with expanded CAG repeats relocate to the periphery of the cell nucleus for repair. This shift is crucial in preventing repeat instability and genetic disease.
Researchers from the University of Pennsylvania have identified a molecular link between DNA damage, cellular senescence, and premature aging. The study found that interferon signaling ramps up in response to double-stranded DNA breaks, prompting cells to enter senescence.
Researchers at Arizona State University have identified a new mechanism of charge transport through DNA, differing from previously recognized patterns. The discovery has important implications for the design of functional DNA-based electronic devices and understanding health risks associated with oxidative damage to DNA.
Researchers have discovered that a specific set of molecules, known as transcription factors, trigger DNA errors and slow down cell division in embryos. This finding provides new insight into the mechanism behind the 'midblastula transition', where the embryo takes control of its genetic expression.
A study found Sall4 protein promotes DNA repair in embryonic stem cells, potentially aiding cancer cell survival. This discovery raises the possibility of targeting Sall4 for cancer treatment.
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.
UV radiation damages skin cells' DNA, even when sun is no longer present, according to a study published in Science. Melanin offers both protection and harm to skin cells.
Researchers at the University of Illinois at Chicago found that damaged DNA can cause a molecule to slow down its patrol, giving it more time to recognize and initiate repair. The protein XPC, important for DNA repair, stalls at damaged sites due to twisted damage, allowing it to open and fix the damage.
A new study identifies a specific mutation in the MCM8 gene as a cause of premature ovarian failure. The mutation leads to chromosomal instability and DNA repair problems, affecting women's reproductive health. Researchers found that siblings without the mutation did not experience similar symptoms.
Researchers at Stanford University School of Medicine have discovered an enzyme that repairs damaged DNA but can also cause destruction. The study found that endonucleases, which are attracted to DNA/RNA hybrids, cut the DNA and damage it when present.
Asthma is a widespread disease that causes genetic damage in peripheral blood, leading to oxidative stress and DNA damage. The study found four types of systemic effects, including protein damage, which can result in unstable chromosomes and increase the risk of other diseases.
A multi-function protein called Sirt6 plays a crucial role in keeping 'jumping genes' inactive. The protein becomes busier repairing DNA damage with age, allowing the genes to become active and contribute to age-related diseases like cancer. Increasing Sirt6 levels may help protect older cells from aging.
Researchers discovered that as mice age, their primary DNA repair process fails and is replaced by a less effective mechanism, leading to increased mutations in critical tissues. This finding may explain why damaged DNA contributes to aging-related illnesses like cancer.
Scientists have discovered that cellular RNA can be used to repair DNA breaks in yeast, providing a novel mechanism of genetic recombination. This process reveals the existence of a new way for cells to maintain their genome stability, which could potentially lead to new treatments for genetic diseases.
A team of researchers at Montana State University published a paper on how DNA responds to ultraviolet light, revealing its super-fast mechanism to resist damage. The findings advance our understanding of the genetic code's resistance to UV rays, which can lead to skin cancer and aging.