Articles tagged with Dna Regions
Researchers at Stanford University School of Medicine have identified genetic variations in a hormone involved in insulin secretion that occur more frequently in some human populations. These variants are associated with higher fasting levels of blood glucose and may help scientists understand the subtle changes in human metabolism, en...
Researchers identified DNA sequence variations associated with abnormal heart rhythms in multiple regions of the human genome. The study found links between these variations and increased risk for sudden cardiac death and heart damage.
Researchers at UTHealth have identified a fifth gene defect associated with thoracic aortic disease, as well as 47 DNA regions linked to the condition. The findings offer new insights into the role of smooth muscle cells in contracting the aorta and provide potential avenues for blocking or reversing the disease.
Researchers at The Wistar Institute have discovered a new class of long non-coding RNA molecules that function like gene enhancer elements, promoting gene expression and potentially accounting for unknown genomic activity. This breakthrough joins a growing body of evidence challenging the central dogma of genetics.
Two studies found new genetic variants linked to ovarian cancer risk in the general population, particularly in women with serous ovarian cancer. The variants were more common in women with aggressive disease and may be used for closer surveillance and preventive approaches.
A recent study published in Human Molecular Genetics found that genetic variation in bitter taste receptors predicts a person's perception of quinine's bitterness. This suggests that individual differences in how people experience quinine's bitterness are related to underlying genetic differences.
Seemingly redundant portions of the fruit fly genome contribute to normal development by ensuring genes are turned on and off at the appropriate times. The discovery sheds light on the potential importance of 'junk DNA' in understanding developmental disorders.
Two large-scale genetic studies identified key regions linked to susceptibility in both adult and childhood inflammatory bowel disease, highlighting the role of epithelial defects in creating an 'open door' for bacteria. The findings also suggest potential new targets for treatment by tightening up the mucosal barrier.
Cornell researchers discovered a genetic mechanism in fruit flies that prevents reproduction between two closely related species, Drosophila melanogaster and D. simulans. The mechanism involves rapidly evolving junk DNA in the male's X chromosome, which creates incompatibilities with the female's DNA, leading to embryo death.
Scientists used novel DNA sequencing technology to analyze bug splatters on car windshields, estimating insect diversity in the region. The study's metagenomic pipeline accurately identified sequences corresponding to various insect taxa, including significant differences between two trips.
Researchers from the University of Leicester have shown that exchange of DNA occurs between the X and Y chromosomes, potentially giving the Y chromosome a way to fix mutations. The study challenges scientific theory that the X and Y chromosomes did not communicate at all.
Researchers at the University of Illinois have designed a small molecule that blocks an aberrant pathway associated with myotonic dystrophy type 1. The new compound, Ligand 1, binds tightly to its target, preventing the MBNL protein from binding to RNA and easing symptoms of the disease.
Researchers identify three genetic variations on chromosome 6 associated with psoriasis, with HLA-Cw*0602 being the strongest link. The study found that individuals with all three variants are nearly nine times more likely to develop the disease.
Scientists at the University of California, San Diego have identified a large number of genes that can prevent genetic rearrangements that may lead to cancer and other diseases. These genes and pathways are involved in repairing DNA replication mistakes and may help explain how the body maintains its stability.
A study by Penn State scientists found that the Y chromosome has evolved rapidly, losing genes at a rate that could lead to its complete disappearance. The research revealed that this rapid evolution is due to the Y-specific DNA evolving independently from the non-sex chromosomes.
Researchers found genetic variations on chromosome 6 associated with higher risk of schizophrenia. This discovery may lead to new treatments for autoimmune disorders and improve existing treatments.
Scientists have identified genetic mutations on chromosome 17q24.2-q24.3 as responsible for Congenital Generalized Hypertrichosis Terminalis (CGHT), a rare condition characterized by excessive hair growth and facial distortion. The discovery provides new insight into the molecular mechanisms underlying this condition.
A research team from Princeton University has found that DNA sequences previously considered 'junk' are essential for an organism's growth and development. The discovery reveals that these regions, known as transposons, perform critical functions by rearranging the genome.
Researchers at UCLA have discovered a link between a variant of the CACNA1G gene and increased autism risk in boys. The study found that nearly 40% of the population carry the common variant, which increases the correlation to autism spectrum disorder.
A global research collaboration has identified eight DNA regions associated with blood pressure and hypertension, six of which have never been linked to the condition before. The study found that genetic variants in these regions may hold promise for new treatments or even prevention.
A study published in the American Journal of Human Genetics found a significant evidence for a gene on chromosome 9q21 that may contribute to pelvic floor disorders. The researchers analyzed DNA from 70 women from 32 families with at least two cases of pelvic floor disorders and found significant evidence for a genetic predisposition.
Researchers found that nocturnal mammals have an inverted chromatin arrangement in their rod nuclei, which acts as micro-lenses to focus light. This unique organization enhances night vision and provides new insights into the evolution of mammalian retinas.
Scientists have identified a shared genetic predisposition between aggressive periodontitis and myocardial infarction, with a common genetic variant on chromosome 9. This discovery highlights the importance of considering periodontitis as a potential risk factor for cardiovascular disease.
A large international study identified nine genetic regions linked to increased risk of early-onset myocardial infarction. The study analyzed data from 26,000 individuals in 10 countries and found significant associations with common single-nucleotide polymorphisms (SNPs) in nine genetic regions.
Researchers at Penn State have discovered that not all DNA segments bound to the GATA1 protein are conserved across mammals, challenging previous assumptions. They found that 45% of these segments retain their identical form in other species, suggesting purifying selection maintains most regulatory regions.
Researchers identify key gene transferred from Sicilian plant to British Groundsel weed, allowing for natural genetic exchanges and evolution. This discovery challenges traditional views of evolution as a one-way process.
A new study reveals that up to one in 17 men in the Mediterranean basin may have a Phoenician ancestor, with a genetic signature distinct from other trading and settlement expansions. The analysis of Y-chromosomal lineages suggests that the Phoenicians contributed at least 6 percent to modern populations.
A new study investigates the evolution of genomic imprinting in mammals, finding that different regions became imprinted at different times during mammalian evolution. This suggests that changes were in response to selection pressures and are adaptive.
Researchers discovered that duplicated regions of DNA containing the BRAF gene lead to increased tumor growth. Targeting the MAPK pathway, which is downstream of BRAF, may provide a new approach for treating individuals with low-grade astrocytomas.
Scientists have identified 20 new regions of the genome linked to human height, adding to the growing understanding of genetics and growth. These discoveries may shed light on diseases such as osteoarthritis and cancer, and could lead to new avenues for treating various conditions.
A recent genetic study has confirmed that the domestic cat's family tree is rooted in the Fertile Crescent, a region in the Middle East. The study found that over 11,000 cats from around the world were genetically clustered into four groups corresponding to European, Mediterranean, east African, and Asian regions.
A new resource identifies regions of the human genome that regulate gene expression, shedding light on biological processes and potential disease mechanisms. The study's findings may aid in developing treatments by turning harmful genes off or increasing helpful ones.
A team of researchers has found that current computer programs can miss up to 60% of regulatory DNA regions, which contribute to inherited diseases like Parkinson's and mental disorders. The study used a novel approach to identify functional DNA sequences in zebrafish embryos, uncovering 17 discrete DNA segments with regulatory potential.
Researchers have established a direct causal connection between hypermethylation and colon tumor development in mice. Hypermethylation switches off tumor suppressor genes, boosting tumors by 60-100 percent.
Researchers found that biological clocks influence gene activity by controlling chromosome coiling in cyanobacteria, suggesting a universal theme for higher organisms. The study provides direct evidence of the regulatory mechanism, which could explain why some genes are active during the day and night.
Scientists at the Salk Institute report that ATM protein activation depends on both damaged DNA and surrounding flanking regions. This discovery reveals a new mechanism for efficient DNA repair, highlighting the importance of intact chromatin in activating the cellular response.
A new method called Microarray-based Genomic Selection (MGS) allows researchers to extract and enrich specific large-sized DNA regions for resequencing. This technology enables the detection of subtle genetic variations that may have serious consequences for health and disease.
A Yale University study found that structural changes to the human genome, including missing or rearranged segments, contribute to individual differences. These variations were identified using Paired-End Mapping and rapid sequencing methods.
Researchers found that tDNA genes and components of RNA pol III are required for establishing silent chromatin cohesion at the HMR locus. This discovery provides new insights into chromosome architecture and may have implications for understanding genetic regulation.
As glaciers melt, DNA of ancient microorganisms may return to life, potentially altering ecosystems. The duration the DNA remains intact depends on factors such as temperature and oxygen levels.
Studies show that double-strand breaks and radiation-induced foci occur at specific regions of the nucleus for repair, contradicting previous assumptions of random distribution. The findings suggest a time effect, with microscope images showing nonrandom distribution of RIF within five minutes of exposure to high-energy particles.
Researchers identified two DNA regions linked to autism on chromosomes 11 and 17 using a quantitative approach. They found significant linkage to symptoms of autism in families with affected children, which may lead to the discovery of multiple genes contributing to the disorder.
A study published in Journal of Biogeography reveals that Caribbean bat species have reversed colonized the continent from which they originated, defying conventional wisdom. This finding highlights the dynamic relationship between islands and the Americas, emphasizing the need for conservation efforts in the West Indies.
A Duke University team develops a method to measure DNA mechanical properties upon irradiation, revealing unraveling of the double helix and crosslinking of bases. This work establishes a relationship between DNA nanomechanics and damage, paving the way for DNA diagnostics.
A team of researchers has designed a biochip platform using a novel 'daisy' molecule that enables efficient gene expression and protein production without living cells. The system allows for the patterning of genes on silicon surfaces, enabling selective trapping of specific proteins with high spatial resolution.
Researchers identified 202 'highly accelerated regions' of DNA that have undergone rapid evolution since humans and chimps diverged, with most not coding for genes. These regions are conserved across multiple species, suggesting they play important roles in controlling gene expression and development.
A new study published in PLoS Genetics has identified specific DNA regions that have accelerated their evolution in humans compared to chimpanzees. These 'Human Accelerated Regions' (HARs) are located near genes involved in growth and development, suggesting they may play important roles in human evolution.
Researchers discover RELM-beta's role in IBD, finding it activates macrophages to produce pro-inflammatory factors. Additionally, antibodies against BP180 cause blister formation in mice by activating the classical complement pathway.
A team of researchers discovered a novel RNA gene in the human genome that is rapidly evolving and plays a crucial role in brain development. The gene is transcribed into RNA in the brain and its changes are associated with schizophrenia and other mental disorders.
A study has found that a specific gene linked to brain development in humans differs dramatically from its counterpart in chimpanzees. The gene, called HAR1, has undergone significant changes over the past five million years, with 18 of its 118 letters changing between humans and chimps.
Researchers discovered a novel mechanism controlling human growth hormone (hGH) gene expression through non-coding RNAs. This finding may lead to the development of therapeutics for hGH defects and a better understanding of genetic disorders.
A study of 50 pairs of fraternal twins with hearing loss identified a specific region of DNA, DFNA18 on chromosome 3, that may contain an important locus for hearing loss in the general population. The findings suggest variation in genes within this region could lead to differences in susceptibility to hearing loss.
A new approach to understanding gene expression regulation has been developed by Finnish scientists. By analyzing DNA sequences and identifying regulatory elements, the researchers have uncovered a potential mechanism explaining why many genes are linked to cancer.
A study published in the American Journal of Human Genetics has identified a genetic region on chromosome 10 strongly associated with late-onset Alzheimer's disease. The researchers scanned over 1,400 single-nucleotide polymorphisms and found six genes within this region that may be involved in the development of the disease.
Scientists have developed new methods to study the connection between regulatory DNA and disease, using a combination of genome-wide associations and cell culture data. The study identified over 3000 genes that could be subject to modification of activity due to common genetic variations.
Researchers studied the genetic markers of African mole-rats to understand their complex social behavior. They found that these microsatellites can reveal how traits pass from mother to offspring, potentially explaining why family members support a single mother naked mole-rat.
Scientists have identified temporal bias in gene duplication events within a complex region of human chromosome 2. This 'punctuated' evolution suggests that DNA duplication and rearrangement occurred at an unprecedented scale in the past, followed by quiescence.
Researchers at the University of Illinois have fabricated superconducting nanowires to measure magnetic fields. The devices exhibit periodic oscillations in resistance when a magnetic field is applied, reflecting wave nature of matter and quantum mechanics.
Researchers at Joslin Diabetes Center have identified genetic regions involved in autoimmune diseases, including type 1 diabetes. The study found a chromosomal region where T-cells were given the green light to attack beta cells, leading to insulitis and later type 1 diabetes.
Researchers found that human genes are less carefully controlled due to a small population size, leading to increased disease risk. The study suggests that natural selection would have overridden harmful mutations with a larger population.