Articles tagged with Dna Methylation
Researchers have developed a new DNA-based technique to determine the age and sex of living beluga whales in Alaska's Cook Inlet. The method uses DNA methylation data and machine learning to create an epigenetic clock for the species, providing accurate age estimates vital to conservation efforts.
Researchers found that acute intervention in epigenetic mechanisms produces antidepressant-like effects more rapidly than conventional drugs. The study used epigenetic modulators to 'erase' the damage done by stress to neuroplasticity, showing a potential faster route to treating depression.
Scientists have discovered that hematopoietic stem cell function is impaired in aged mice, even when transplanted into a young bone marrow niche. The epigenome analysis reveals that DNA methylation profiles are a better indicator of aged HSC function than gene expression patterns.
A study by University of Vermont researchers reveals that Colorado potato beetles develop resistance to pesticides through epigenetic changes, which can be passed on to descendants across at least two generations. These changes allow the beetles to rapidly adapt to new pesticides without requiring genetic mutations.
Research at University of Fukui shows that epigenetic modifications to the oxytocin gene are correlated with maternal empathy and personal distress. The study found a positive correlation between oxytocin gene methylation and harsh parenting.
Researchers successfully restored vision in mice by turning back the clock on aged eye cells, reversing vision loss caused by glaucoma. The approach also reversed age-related vision loss in elderly mice, offering promise for treating various age-related diseases in humans.
A new method enables specific inhibition and removal of DNA methylation at targeted locations using enzymatic photocaging. This technique involves attaching photocages to AdoMet analogues, which are then transferred to methylation sites, allowing for precise control over gene regulation.
A 330-year-old poplar tree has been found to accumulate epigenetic marks that reveal its age, providing a natural epimutation accumulation system. The study's findings suggest that the rate of somatic epimutations is approximately 10,000 times higher than genetic mutations in the same tree.
Researchers found that adding tree nuts to a Western-style diet improves sperm count, viability, motility, and morphology. Nut consumption also alters specific sperm DNA methylation patterns, with 97.2% of regions displaying hypermethylation.
Researchers found a distinct DNA methylation signature in cord blood of newborns with autism spectrum disorder (ASD), spanning regions linked to early fetal neurodevelopment. The findings may hold clues for early diagnosis and intervention.
Researchers found epigenetic changes in domesticated chickens that differ from their wild ancestors, the red junglefowl. They identified 'hotspots' in DNA controlling epigenetic changes at hundreds of locations.
Researchers have identified 105 epigenetic changes in blood cells that precede the onset of type 2 diabetes. These changes are associated with altered methylation activity and expression patterns in islets of Langerhans, suggesting a potential diagnostic marker for early detection.
A recent study found that genetic background affects adaptations to aging in same-sex aging twins. DNA methylation changes correlate strongly with aging and are partly heritable in late life. The research highlights the role of genetic regulation in biological aging rates, including immune-inflammatory pathways.
A specific gene, NTRK2, is associated with reduced PTSD risk after traumatic experiences, leading to weaker and less severe memories. The study's findings suggest that increased regulation of this gene may reduce memory formation and lower the risk of developing PTSD.
Scientists have discovered a correlation between high blood lead levels in children and increased methylation of DNA, which affects gene expression. This finding reveals a previously unknown mechanism for lead poisoning and its devastating effects on children's health.
Researchers developed an algorithm that can predict DNA methylation sites throughout the genome using deep learning. This method has been successful in identifying potential therapeutic targets for human diseases and could improve conventional screening methods.
Scientists have identified unique de novo DNA methylation targets for DNMT3 enzymes during mammalian development. Dnmt3a exclusively regulates differentiation-related genes, while dnmT3b regulates X-chromosome genes. The study's findings may lead to a novel therapeutic approach for patients with DNMT3 mutations.
Researchers found persistent DNA methylation changes in blood cells and stem cells associated with metabolic memory and future diabetic complications. The study provides evidence of a link between epigenetics, glycemic history, and complication development, offering potential biomarkers for early intervention and prevention.
Researchers at Kumamoto University found that DNA methylation in the serotonin transporter gene is inversely correlated with amygdala volume in male patients with schizophrenia and bipolar disorder. The study suggests a potential biomarker for onset prediction, diagnosis, and therapeutic effects.
Researchers developed a new set of computational tools to identify cell-type specific methylation patterns, known as molecular barcodes, in complex cell mixtures. These new methods can distinguish between different cell types in tissues made up of multiple cell types.
Scientists from Hackensack Meridian Health have discovered specific locations in the DNA where expression changes are imbalanced, indicating risks of cancer and other diseases. This finding provides a key to understanding the beginnings of both cancers and non-cancerous diseases.
Research funded by the NIH has linked endometriosis to DNA changes, particularly in methylation patterns that can alter gene activity. The findings may inform new ways to diagnose and treat this condition affecting up to 10% of U.S. women.
Researchers at EMBL Rome reveal that protein glycosylation plays a central role in DNA methylation, inducing gene silencing by modifying regulatory factors. This breakthrough sheds light on the mechanism behind the most studied epigenetic modification.
Researchers developed DunedinPoAm, a blood test measuring DNA methylation marks to assess biological aging rate. Midlife adults with faster aging rates showed accelerated physical and cognitive decline.
NEI researchers identify 2,054 differentially methylated regions in mouse rod photoreceptors, revealing distinct shifts in gene expression that contribute to age-related disease susceptibility. The study suggests targeting the epigenome as a potential therapeutic strategy to prevent leading causes of vision loss, such as AMD.
Research reveals a new mechanism for controlling DNA methylation in cells, involving the ubiquitination of PAF15, which is crucial for maintaining DNA methylation and inhibiting cancer cell proliferation. The discovery has significant implications for the development of new inhibitors of DNA methyltransferase
Scientists have detected a potential new biomarker for Alzheimer's disease in the Presenilin1 gene, which shows promise for earlier diagnosis and treatment. The study found that changes in DNA methylation of this gene are common in people with Alzheimer's and could be used to monitor environmental triggers and treatment responses.
Researchers at KAUST found evidence of intergenerational transfer of DNA methylation patterns in corals, which could help develop new strategies for coral conservation. The study suggests that chronically stressed corals can pass on epigenetic changes to their offspring, potentially increasing resilience to climate change.
A study by NIH researchers found that higher maternal blood pressure during pregnancy is associated with chemical modifications to placental genes, including DNA methylation. The findings suggest a potential link between early origins of cardiovascular disease and high blood pressure in pregnancy.
Scientists at UChicago discovered a previously unknown mechanism where RNA itself affects DNA transcription using a chemical process. This breakthrough has significant implications for understanding human disease and drug design.
A UC San Francisco-led research team has discovered the first conclusive evidence that natural selection may also occur at the level of the epigenome for tens of millions of years. The study found a particular epigenetic mark on the DNA sequence of Cryptococcus neoformans, which should have disappeared during the age of the dinosaurs.
In mouse studies, a 'methylation clock' on the ELOVL2 gene ticked toward impaired vision with decreased gene expression, but boosting expression rescued age-related decline in visual function. The study highlights ELOVL2's regulatory role in producing essential fatty acids for healthy retinal function.
Scientists at Institut Pasteur and CNRS identified molecules capable of inhibiting DNA methylation, killing even the most resistant Plasmodium falciparum parasites. The results showed significant activity comparable to chloroquine, with some inhibitors killing parasites in just 6 hours.
Researchers found significant epigenetic changes in DNA, specifically reduced methyl chemical tags, between two forms of acute childhood malnutrition. This led to complex gene expression changes and enhanced expression of genes related to metabolic problems like blood sugar regulation and fatty liver disease.
Researchers found that epigenetic mechanisms, specifically DNA methylation, play a key role in determining an individual's innate drive to exercise. The study revealed that mice with disrupted DNA methylation in hypothalamic neurons exhibited decreased voluntary physical exercise behavior.
A new study found that fertility treatments cause epigenetic changes associated with rare diseases, while maternal age does not. Researchers used mice to dissociate the effects of technology and aging on gene expression.
A study explores the genetic mechanisms by which alterations in colon-associated microbes might promote colorectal cancer. Alterations in gut microbes have been linked to increased DNA methylation changes and CRC risk.
The study reveals that Trm7-Trm734 preferentially methylates specific tRNA transcript variants, and that Trm734 is required for the positioning of tRNA for methylation. This breakthrough contributes to understanding genetic defects and developing new treatments for nosyndromic X-linked intellectual disability.
A multi-institutional team found that genomic structural variation alters DNA methylation across hundreds of genes, reducing global levels in human cancers. This study provides new insights into the mechanisms underlying cancer development and suggests potential implications for cancer immunotherapy.
A new method called PedBE clock estimates age in children under 20 using DNA methylation patterns from cheek cells. This technique is linked to gestational age and autism spectrum disorder, suggesting its potential for studying child development through epigenetics.
Using DNA methylation patterns, researchers reconstructed the skeletal anatomy of Denisovans, identifying 56 anatomical features that differ from modern humans and/or Neanderthals. The study provides insights into human adaptation, evolutionary constraints, and disease dynamics.
Researchers found a specific gene associated with autism undergoes changes in the sperm of men who use marijuana, sparking further investigation into potential intergenerational effects. The study suggests a possible connection between cannabis use and autism, warranting urgent research given the increasing prevalence of marijuana use.
Researchers found that postnatal overnutrition in mice leads to premature epigenetic aging in pancreatic islets, increasing the risk of diabetes. Early life overnutrition accelerates DNA methylation changes, resembling those of middle-aged mice, and contributes to impaired glucose regulation.
Researchers at Technical University of Denmark have developed a method to quickly couple enzymes with specific methylation patterns, revealing which enzymes are responsible for certain patterns. This discovery holds great promise for improving DNA transformation and introducing foreign DNA into host organisms.
Scientists used an epigenetic clock to explore the molecular mechanisms of aging in humans and identified a gene, NSD1, that is closely linked to the process. This research could lead to a better understanding of how aging works and its relationship with various conditions.
Researchers found that fish preserve 'DNA methylation' memories between generations, unlike humans where this is almost entirely erased. This discovery opens up new avenues for studying intergenerational memory transfer through DNA methylation.
Researchers reveal how TET proteins convert 5mC to 5hmC, preventing genomic instability and cancer. Defects in TET function are linked to increased levels of DNA damage and genome instability, highlighting the importance of maintaining a balance between DNA methylation and demethylation.
Researchers successfully studied DNA methylation loss in human cells, revealing the activation of transposons that can lead to serious diseases. The study provides new insight into how changes in DNA methylation contribute to diseases and opens up potential for a new understanding of genome function.
Researchers at IDIBELL confirm use of PDX models for studying methylation patterns associated with breast cancer subtypes and response to docetaxel. The study validates the models' representation of human tumor samples, enabling more accurate drug preclinical studies.
New research reveals that epigenetic changes in humans and zebrafish, a tiny fish species, are conserved for over 400 million years. The study found that genes linked to cancer development are silenced early in human embryos, similar to zebrafish, suggesting an ancient mechanism controlling these genes.
A recent study by Brigham and Women's Hospital researchers found four sites of DNA methylation associated with sleepiness in both African American participants from the MESA and CHS studies. Additionally, they discovered 14 such sites among only African American participants from both studies.
A Massachusetts General Hospital study found that stressful experiences before age 3 have a greater effect on gene expression than those in later years. Adversity during this period is associated with increased DNA methylation, which reduces gene expression and may lead to mental health problems.
Researchers developed a method to detect and edit DNA methylation in individual mouse oocytes, enabling predictions of offspring phenotype. The technique allows for correction of genetic disorders, such as Angelman syndrome, and may facilitate study of epigenetic information.
A study by University of Malaga researchers reveals that DNA methylation levels in genes related to lipid metabolism and inflammation are altered in obese patients with a metabolic disease. This dysregulation may contribute to the development of obesity-related diseases such as diabetes, cardiovascular disease, and cancer.
Researchers developed a novel cell model of aging-related colon cancer risk by combining genetic and epigenetic factors. The model shows that epigenetic changes are essential for cancer initiation, and can be used to assess cancer risk in human lab-grown cells.
A research team has identified CpG dinucleotides as reliable markers of gene activity, which can be used to determine the status of cytosine methylation. These 'traffic lights' signal whether RNA is synthesized from a gene and ultimately whether its associated protein will be produced.
A Northwestern University study found that poverty can become embedded in nearly 10% of the genome, associated with over 2,500 sites and 1,500 genes. This epigenetic mark may shape gene expression and contribute to disease development.
A study by the University of Helsinki found that insufficient sleep is associated with changes in DNA methylation in gene regulatory elements related to the nervous system development pathway. This indicates a potential link between chronic sleep deprivation and long-term health risks.
A new study is analyzing blood samples from over 2,500 participants to identify biomarkers of Parkinson's disease. The researchers aim to find molecular indicators in DNA that can aid in early diagnosis and treatment.
A new study reveals that male wild guinea pigs pass on epigenetic modifications to their offspring in response to environmental changes, such as diet and temperature. This discovery suggests that fathers play an important role in shaping the adaptability of future generations.