Articles tagged with Gene Expression
A new study found that low doses of resveratrol mimic the heart-healthy effects of caloric restriction, suggesting a possible explanation for France's low incidence of heart disease. The compound may also promote mitochondrial health and have anti-aging benefits.
Researchers found that low doses of resveratrol, a natural constituent in red wine, mimic the effects of caloric restriction on aging. The study shows that small doses can elicit many benefits as a reduced-calorie diet, including prevention of heart decline associated with aging.
Researchers found that mouse ovaries undergo significant gene expression changes as they age, unlike the limited changes seen in testes. A calorie-restricted diet reversed some of these aging effects, particularly in females.
Researchers have developed fluorescent nano-barcodes that can detect biomolecules with high precision, surpassing existing methods like microarrays. This technology has the potential to accurately diagnose diseases and identify new molecular markers associated with them.
Researchers discover how PRDM16 regulates fat cells to favor brown adipose tissue (BAT) formation, which can help counteract obesity and diabetes. The findings provide insight into the molecular mechanisms behind BAT specification and hold promise for therapeutic treatments.
Researchers found that slow fetal growth is linked to an increased risk of developing type 2 diabetes in adulthood. They also identified a new gene mutation associated with sudden cardiac death in humans. The study used rat models and human tissue samples to understand the mechanisms behind these diseases.
Research using a rat model of intrauterine growth retardation found reduced Pdx1 expression in pancreatic beta-cells throughout life following IUGR. The molecular mechanisms affecting Pdx1 expression were reversible in the fetus and after birth, but irreversible in adulthood, providing new insight into diabetes development.
Researchers have gained insight into the way Cyanothece, a cyanobacterium, regulates its physiological processes through its circadian rhythm. The study found that genes governing vital processes like energy metabolism and nitrogen fixation cycle on and off with changing light and dark periods.
Researchers identified an association between gene expression and response to methotrexate treatment in patients with acute lymphoblastic leukemia. The study suggests that genomic profiling could help predict response to the drug and improve long-term survival, paving the way for new strategies to enhance survival rates.
Researchers at Hospital for Special Surgery discovered a new mechanism involved in the pathogenesis of inflammatory diseases such as rheumatoid arthritis. The study reveals that tumor necrosis factor (TNF) activates macrophages to produce interferon-beta, leading to sustained expression of genes encoding inflammatory molecules.
Researchers found that male yellow jacket paternity has no impact on colony dynamics, with females exhibiting cooperative behavior despite multiple mating. The study suggests a benefit to colonies for queens having multiple partners, leading to increased success and reproductive output.
Mice fed human diet exhibit distinct liver gene expression profiles compared to those on a chimpanzee diet, suggesting dietary influences on physiological differences between humans and other apes. This study replicates previous findings in mice fed different diets.
Researchers at Arizona State University develop a gene detection platform using self-assembled DNA nanostructures, enabling label-free detection of RNA genes in single cells. The technology has potential applications for disease diagnosis and could revolutionize the way gene expression is analyzed.
The Medical College of Georgia Center for Biotechnology and Genomic Medicine has been selected to isolate RNA and DNA from the blood of thousands of children involved in a worldwide study of the causes of type 1 diabetes. The TEDDY study aims to identify environmental triggers for diabetes in children with known high-risk genes.
Researchers discover that lenalidomide and pomalidomide can increase fetal hemoglobin production in people with sickle-cell disease, potentially providing a new therapy. These findings also suggest the possibility of using these drugs to treat other beta-hemoglobinopathies.
Researchers have discovered 156 new likely imprinted genes in the human genome, including those linked to cancer, diabetes, and autism. The findings offer clues to better disease prevention and management.
Researchers created a molecular map of aging in mice by analyzing gene expression changes in 16 different tissues. The study found that different tissues exhibit distinct patterns of aging, suggesting three separate clocks for aging, and that some pathways are shared with human aging.
A new study by MIT researchers has found that children of mothers with contaminated water supplies during pregnancy exhibit gene expression changes associated with cancer and other diseases. The team developed a reliable test using 11 genes, offering an alternative to routine blood tests.
Researchers at Cedars-Sinai Medical Center have developed a novel gene delivery system that can sustain therapeutic expression in the central nervous system for up to 1 year. This innovative approach uses an adenoviral vector called HC-Adv, which is invisible to the immune system and renders previously used vectors ineffective.
Scientists found that inhibiting Nox1 and Nox2 genes can slow down ALS progression in mice, leading to improved survival rates. The study suggests developing drugs targeting the Nox pathway could be beneficial for individuals with ALS.
Researchers at Rensselaer Polytechnic Institute are developing a personal device to measure daily light intake and activity, predicting optimal timing for light therapy to synchronize the circadian clock. The device aims to alleviate psychosocial stress and sleep-related ailments caused by inadequate or irregular light exposure.
Researchers at Oregon State University found that lipoic acid restores glutathione levels and boosts antioxidant defenses to combat cellular decline associated with aging. The compound also acts as an anti-inflammatory agent, relevant to degenerative diseases.
Researchers at Temple University have developed a new biosensor that uses mammalian olfactory signaling machinery to detect explosives. The biosensor can also potentially be used to screen experimental medications, a crucial step in the development of new drugs.
The AlloMap test has been shown to correlate with oxygen saturation levels, cardiac filling pressures, and the electrical properties of the transplanted heart. Non-invasive blood tests can also detect cytomegalovirus-induced immune responses in lung transplant patients.
A recent study presented at ISHLT meeting reveals that profiling gene expression can detect organ rejection in lung transplant patients. The LARGO study uses quantitative real-time polymerase chain reaction to identify molecular signatures associated with acute cellular rejection.
Scientists have developed a mouse model for synovial sarcoma, revealing that the tumor arises from skeletal muscle precursor cells called myoblasts. The study also showed that expression of a chimeric fusion protein called SYT-SSX in these cells is sufficient to induce synovial sarcoma with 100% penetrance.
A recent study identified common flaws in oncology microarray studies, including inadequate methods to account for false-positive findings. Researchers provide guidelines to improve the quality of analysis and reporting of such studies, aiming to validate scientific findings through replication.
A new study by UC Berkeley researchers found specific gene expression changes in Daphnia magna water fleas in response to copper, cadmium, and zinc contamination. These changes suggest a possible role for toxicogenomics in assessing environmental toxicity.
Researchers used gene chips to analyze patterns of gene expression in mice and found a 94% accuracy rate in distinguishing sepsis from non-infectious inflammation. The technology could lead to a rapid bedside blood test that speeds diagnosis and treatment, especially in intensive care units.
Researchers found that low p27 expression is associated with poor breast-cancer prognosis, particularly among women with hormone-receptor-positive tumors. High p27 expression was linked to a 6% improvement in 5-year survival rates compared to those with low p27 expression.
Dartmouth researchers discover that low doses of arsenic disrupt steroid hormone receptor signaling, affecting biological processes and disease risks. The study found that arsenic suppresses the ability of critical receptors to respond to normal hormone signals.
Researchers found that turmeric extract inhibited joint destruction and inflammation, altering gene expression and preventing osteoclast activation. A dose of 1.5 milligrams per day may be effective for humans, suggesting a potential mechanism similar to anti-inflammatory drugs.
Researchers identified a gene expression profile associated with late radiation toxicity, correctly classifying 63% of patient populations. The study suggests that some patients are genetically predisposed to develop late-radiation toxicity and provides clues about molecular pathways involved.
Researchers found increasing p16INK4a levels in older cells, leading to poor function and premature aging. Studies suggest a common aging mechanism across disparate cell types, with implications for age-related diseases like diabetes.
A core needle biopsy sample gives a representative picture of gene expression in the entire tumor, according to a new study. The results show that biopsy samples have identical gene expression levels as surgical samples, but with four specific genes modified by the biopsy procedure.
Researchers identified a new gene, txr1, that promotes taxane resistance by suppressing thrombospondin 1. Depletion of txr1 or treatment with TSP-1 restores taxane sensitivity, offering a new avenue to modulate chemotherapeutic drug response.
A study published in PLOS Medicine found that gene expression patterns in human lung tumors most similar to those seen in early mouse lung development stages predict poorer outcomes for lung cancer patients. The researchers developed a classification system based on genomic analysis, which may help improve treatment options.
A large-scale cross-platform study of research microarrays has uncovered high concordance across platforms, addressing a crucial issue in biomedical research. The study, led by Winston Patrick Kuo, used 10 different microarray platforms and two QRT-PCR approaches to compare gene expression measurements.
Scientists have discovered that sperm and male proteins trigger a cascade of gene activity in female fruit flies' reproductive tracts six hours after mating. This finding provides new insights into reproduction and could lead to innovative methods for controlling insect pests.
Researchers have uncovered three disease-relevant genes in synovial tissue from identical twins with RA, shedding light on the genetic components of this inflammatory disease. The study identifies laeverin, 11ß-HSD2, and Cyr61 as key enzymes linked to protein degradation, inflammation, and new blood vessel formation.
Researchers at PLOS Medicine analyzed gene expression in labor and autoimmune disease APS1, finding complex networks of co-regulated genes. The study highlights the importance of making original data available for reanalysis.
Researchers have identified alveolar type I cells as potential diagnostic markers for acute lung injury. The study's findings suggest that these cells may play a crucial role in the development of pulmonary diseases.
Researchers identified 254 gene sequences in melanomas that may inhibit metastasis and found high retinol levels reduce risk of hepatocellular carcinoma. Grb7 peptide inhibitor targets pancreatic cancer cells, showing promise as a new therapy.
The BGEM Web site provides a growing collection of tens of thousands of images showing where and when specific genes are expressed during brain development. This information is linked to up-to-date data on genes, including their function, location, and DNA sequence.
The National Institute of Standards and Technology (NIST) is building a library of well-characterized RNA sequences for use as external controls in gene expression assays. The sequences will be released to the public domain to ensure broad participation.
A study found that genes involved in the innate immune response are underexpressed in female mice during puberty, while those involved in the adaptive immune response are overexpressed. This difference is controlled by the Fas/FasL pathway, modulated by estrogen.
Researchers have developed a method to rapidly diagnose bioterrorism-related diseases by analyzing gene patterns in white blood cells. This technology, which uses mathematical modeling tools, can identify specific changes in gene expression within 2 hours of exposure, allowing for early diagnosis and treatment.
Researchers at Florida State University have identified a gene called BDNF as playing a key role in social aversion, leading to the development of a potential new treatment for depression. Long-term use of antidepressants was successful in reversing social withdrawal, but a gene therapy approach showed promise with fewer side effects.
A study by the University of Texas Health Science Center at Houston has identified 5'-AMP as a key molecular mediator that switches mice from burning glucose to burning fat in response to darkness. This switch is also observed in active mammals, such as bears and humans, and may lead to new therapies for obesity and type 2 diabetes.
Researchers create conditional mouse model to study CBFB-SMMHC, a fusion protein linked to 12% of human AML cases. The model shows that CBFB-SMMHC induces abnormal preleukemic blood cell progenitors, leading to AML development in adult mice.
A four-year study of designer rats with high blood pressure and healthy counterparts has identified candidate genes that may contribute to cardiovascular disease. The online database TREX is now available to researchers worldwide, offering an unprecedented amount of data to mine.
A team of scientists from the University of New South Wales has identified a gene called FAT that is associated with an increased risk of bipolar disorder. The discovery was made using a multi-faceted approach that included studying families, patients, and therapeutic drug mouse models.
Researchers at Carnegie Mellon University have developed a new method to identify gene activation in DNA microarrays with greater sensitivity and specificity. This innovation holds promise for improving research on complex biological systems, including stress response, cancer, and embryo development.
The ketogenic diet has been found to enhance brain energy production and increase neuron stability, leading to improved resistance to seizures. Researchers discovered that the diet's effects on gene expression and mitochondrial function contribute to its anticonvulsant properties.
Subordinate male fish undergo rapid transformation when more dominant males are removed, exhibiting increased aggression, brightness in colors, and changes in brain gene expression. The research reveals a crucial connection between social cues and reproductive physiology in both humans and fish.
A new study suggests that ADMA, a substance found in blood vessel linings, may actually contribute to the development of cardiovascular diseases. Researchers found that high levels of ADMA stimulate genes associated with lung, heart, and kidney disease, paving the way for potential new treatment strategies.
The ERCC proposes developing consistent, well-characterized RNA samples to validate gene expression assays. These external RNA controls will help ensure comparable results across microarray and QRT-PCR systems.
Researchers at Carnegie Mellon University have discovered a novel mechanism called recursive splicing, which removes long introns by steadily paring them down in a predictable fashion and joining the remaining exons. This process has been conserved over tens of millions of years of insect evolution and is likely to occur in humans.
The study found that deleting yeast gene ISY1 increases splicing reaction efficiency and improves 3'-splice site accuracy. The researchers believe Isy1 regulates spliceosomal conformation to ensure accurate pre-mRNA splicing.
The human cerebellum and cortex age at vastly different rates, with the cortex showing pronounced and consistent changes, while the cerebellum experiences smaller and less coordinated changes. This study, published in PLoS Biology, reveals that the functions of brain regions influence how they age.