Articles tagged with Bacterial Dna
Researchers from Helmholtz Centre for Infection Research have discovered a new dual-RNA guided enzyme Cas9 that enhances the potential of exploiting bacterial immune systems for genome engineering. The CRISPR-Cas system has been shown to be faster, more precise and cheaper than existing technologies.
Researchers discovered that S. aureus converts neutrophil extracellular traps into a toxic molecule, dAdo, which kills macrophages and allows the bacteria to avoid immune destruction. The study provides new insights into the mechanisms behind S. aureus infections and offers potential therapeutic targets.
Researchers discovered bacteria can take up small fragments of damaged DNA, including ancient DNA, and integrate it into their genome. This process, called Anachronistic Evolution, has significant implications for the spread of antibiotic resistance in hospitals.
Researchers have identified a novel toxin produced by bacteria that can inhibit bacterial growth by blocking DNA replication machinery, providing new therapeutic avenues for developing next-generation antibiotics.
Researchers found that Prevotella copri was more abundant in patients with newly diagnosed rheumatoid arthritis than healthy individuals or those with chronic, treated rheumatoid arthritis. The study suggests a possible link between the growth of this intestinal bacteria and the onset of autoimmune attacks on the joints.
Researchers found that partial degradation of a DNA replication protein is necessary for the survival of Caulobacter crescentus. The energy-dependent protease ClpXP generates specific-sized fragments required for normal growth and DNA repair, challenging previous assumptions about protein digestion in bacteria.
Researchers used gene sequencing to map bacterial communities on two human cadavers, finding differences and changes over the decomposition process. The study suggests specific patterns in bacterial communities as a corpse decomposes.
Researchers at University of Copenhagen have developed a substance that kills multi-resistant bacteria quickly and effectively, employing a multifunctional mechanism. The findings demonstrate the potential for HDM-4 to combat bacterial infections, strengthening the human immune response.
Scientists have identified a novel transposon in listeria bacteria responsible for tolerance to benzalkonium chloride. The discovery highlights the importance of thorough disinfection in food-processing facilities to prevent the spread of resistant bacteria.
A study published in PLOS ONE found that oral bacteria under the gums can discriminate between ethnicities with high accuracy. The researchers identified 398 species of microbes and found that each ethnic group had a distinct 'signature' of shared microbial communities.
Plant genes called expansins were transferred from plants to bacteria, fungi, and amoeba, allowing them to weaken plant cell walls and colonize roots. This unique case suggests that rare gene transfers have contributed significantly to the evolution of prokaryotic and eukaryotic species.
Researchers from Yale and Harvard successfully recoded the E. coli genome, enabling it to resist viral infection by limiting natural protein production. The new genetic code also allows for the creation of potent proteins with novel functions.
Researchers found distinct bacteria in women with stress urinary incontinence (SUI) and urgency urinary incontinence (UUI), suggesting potential new treatment approaches.
A study by Columbia University Medical Center researchers suggests that narrow-spectrum ultraviolet (UV) light could dramatically reduce surgical wound infections. The researchers found that 207-nm UV light was as effective at killing MRSA bacteria as a conventional UV lamp, but resulted in less damage to human skin cells.
Researchers have developed PPMOs, which target specific genes in bacteria, offering a more precise and effective alternative to antibiotics. In animal studies, PPMOs showed significant control of certain strains of Acinetobacter, a bacterium resistant to many antibiotics.
A team of researchers discovered that lithodid crabs subsist on bacterial mats at cold sea methane seeps. Crabs were observed grazing on the mats for 400 hours, taking up chemically-produced carbon, and even showing signs of photosynthesis in their bodies.
Researchers have engineered E. coli to seek out and kill disease-causing pathogens, including those responsible for difficult-to-treat infections like pneumonia and urinary tract infections. The new bacterial strain uses an antimicrobial peptide and enzyme to break down biofilms, offering a potential new treatment option.
Researchers at Ruhr-University Bochum have investigated how plasmas affect bacterial cells, finding that they attack the cell envelope, DNA, and proteins. This discovery could lead to the development of alternative treatments for chronic wounds and root canal disinfection.
Scientists studying the wild strain of the model organism Dictyostelium discoideum discovered that some clones can farm bacteria and carry defensive symbionts to protect their crops. The researchers isolated wild clones from soil and found that these clones were more complex than previously thought.
A recent study published in Nature found that approximately 1 in 4 individuals have fewer than average intestinal bacteria, leading to reduced diversity and increased inflammation. This lack of gut bacteria is associated with a higher risk of obesity, type 2 diabetes, and cardiovascular diseases.
E. coli bacteria produce at most six times more heat than needed to meet thermodynamic constraints, suggesting they could grow faster and still obey the second law of thermodynamics. This finding has implications for synthetic biology applications and may support the hypothesis that RNA evolved before DNA.
Researchers at the University of Sheffield have identified four bacteria found in drinking water that can form biofilms on pipes. Combining these bacteria with Methylobacterium produces a biofilm within 72 hours. The study suggests targeting specific bacteria could prevent biofilm formation and reduce chemical treatments.
A study by Linköping University and Karolinska Institutet found that children born via Caesarean section have a lower diversity of gut bacteria, increasing the risk of allergies. Vaginal birth exposes the child to beneficial bacteria in the mother's birth canal.
Researchers tracked a healthy male subject's virome for two-and-a-half years, revealing rapid evolution of viral species. The study found that certain viral species changed substantially over time, driven by genetic mechanisms such as substitution and CRISPRs.
A Minnesota high school dance team banquet led to a strep throat outbreak among 18 people who consumed cooked pasta. DNA fingerprinting revealed the bacteria isolated from throats matched those found in the pasta.
Mycobacteria have developed a new process called Distributive Conjugal Transfer, which allows them to mix genomes like sexual reproduction. This process enables the creation of patchwork genomes with benefits such as increased variation and adaptability.
A new study reveals that healthy Red Sea corals harbor bacterial communities deep within their tissues, including the previously unknown species Endozoicomonas. This symbiotic relationship is believed to aid the coral's nutrient recycling, contributing to its overall health and survival.
A new four-year grant will support research on Fusobacterium, a prevalent oral bacteria linked to stillbirth, post-birth sepsis, and premature births. The study aims to understand why some subspecies enter the bloodstream and cause diseases, potentially leading to disease prevention.
Researchers discovered that antibiotics can cause oxidative stress, damaging human cells and leading to side effects. The team found two novel strategies: using bacteriostatic antibiotics or antioxidants like N-acetylcysteine to prevent or remediate oxidative stress.
A Kansas State University-led study reveals that the TonB protein plays a central role in the uptake of iron by Gram-negative bacteria, which cause diseases like typhoid fever and meningitis. The research found that TonB acts as an electric motor that rotates in response to cellular energy flow, enabling iron acquisition into the cell.
Scientists used a combination of biochemistry and mass spectrometry to reveal how protein degradation is critical to cell cycle progression and bacterial development. They identified over 100 new candidate substrates of the protease ClpXP, including proteins involved in DNA replication, transcription, and cytoskeletal changes.
A team of researchers at Massachusetts General Hospital has found that CRISPR-Cas RNA-guided nucleases can cause off-target mutations in human cells, with rates potentially higher than at targeted sites. This limitation highlights the need to improve the precision of these gene-editing tools for therapeutic applications.
Scientists at Harvard University's Wyss Institute have found that low doses of silver can boost the efficacy of widely used antibiotics and make previously lethal bacteria sensitive again. This discovery holds promise for treating stubborn infections and developing new therapies against antibiotic-resistant infections.
Scientists discover new antibiotic molecule KKL-35 that targets trans-translation step in bacteria, rendering them incapable of replicating. The compound is 100-fold more effective against Mycobacterium tuberculosis than current therapies.
A North Carolina State University study found that households with dogs harbor a wider variety of bacteria, including those rarely found in dog-free homes. The research suggests that dogs influence the types of microbes present in homes, potentially explaining correlations between dog ownership and reduced allergies.
A streamlined approach to genetic engineering has been developed, reducing the time and effort needed to insert new genes into bacteria. This new method, called clonetegration, enables the rapid construction of synthetic biological systems and could facilitate genetic engineering with difficult-to-clone sequences.
Researchers at Albert Einstein College of Medicine discovered that vitamin C can kill drug-resistant tuberculosis (TB) bacteria in laboratory culture, suggesting a new approach to shorten TB therapy. The study found that vitamin C induced a Fenton reaction, causing reactive oxygen species that kill the TB bacteria.
Researchers found that bacteria form micro-colonies in a pattern similar to economic systems, where a small number of lucky cells have access to resources. This process enables biofilms to develop, making infections potentially deadly. The study may lead to new treatment options using incentives and communication.
Researchers at UCLA, Northwestern University, and the University of Washington have identified the strategy by which bacteria form initial colonies in biofilms. The study reveals that a small number of 'lucky' cells become the elite cells that start the colonies, organizing in a pattern similar to wealth distribution in the US economy.
A handheld diagnostic device uses microfluidic technology with nuclear magnetic resonance to diagnose TB and other bacterial infections in under 3 hours, improving on standard culturing practice. The device also detects antibiotic-resistant strains and has potential applications in resource-limited settings.
A study using genome sequencing technology revealed that pneumococcal bacteria population shifted from targeted vaccine strains to rare, pre-existing types, explaining the vaccine's effectiveness. This breakthrough enables real-time surveillance of bacterial populations, improving understanding of vaccination effectiveness and future d...
Researchers have discovered a new mechanism of DNA helicase that utilizes thermal motion to move long distances along DNA, providing an energy-efficient way to unwind double-stranded DNA
Scientists discovered that certain bacteria require parts of the CRISPR system to stay infectious, using it to shut off a gene that triggers detection by the immune system. This finding could accelerate vaccine development, but also highlights the dangers of defensive tools being co-opted for stealth.
Researchers discovered a molecular switch regulating biofilm formation, which could help identify new antibiotics and prevent biofilms from forming. The study sheds light on how bacteria shield themselves in a slimy protective layer to evade attacks.
Researchers at Helmholtz Institute for Pharmaceutical Research Saarland have discovered a new peptide that inhibits bacterial RNA polymerase, preventing DNA-to-RNA transcription. The peptide, P07, shows promise as a potential new antibiotic with a unique mechanism of action that does not lead to cross-resistance.
The study suggests that oil-eating bacteria in the Gulf are more resilient and abundant than previously thought, enabling natural clean-up. The discovery provides new insights into the Gulf's ability to recover from oil spills, potentially reducing the need for heroic measures.
Whole genome sequencing reveals that drug-resistant bacterial infections can be transmitted from animals to humans, highlighting the role of livestock as a potential reservoir of antibiotic-resistant bacteria. The study confirms animal-to-human transmission of MRSA, a disease-causing bacterium with resistance to methicillin.
Researchers have discovered a new type of molecular motor that moves DNA through cells without rotational motion. The discovery challenges previous understanding and paves the way for practical machines and devices in nanotechnology.
A University of Granada researcher proposes that antibiotic abuse forces bacteria to take up DNA from resistant strains, leading to increased resistance. This stress-induced uptake can also make non-resistant bacteria more virulent, exacerbating the problem.
Mitochondria have been found to contain 'assembly plants' that regulate the expression of their genes, producing long precursor RNA molecules specific to this organelle. These structures, known as mitochondrial RNA granules, play a crucial role in energy production and may be linked to various diseases.
A new study reveals that certain viruses, known as bacteriophages, can hijack the immune systems of bacteria to overcome their defenses. This discovery has significant implications for phage therapy, which could potentially treat bacterial infections resistant to antibiotics.
New research finds that standard bacterial culture tests may overlook certain germs, highlighting the need for multiple detection methods. The study analyzed 44 premature babies and detected over 20 uncultured bacterial species using DNA genomic analysis.
Researchers isolated an enzyme called NucB from the marine bacterium Bacillus licheniformis, which can break down biofilms in sinusitis. The enzyme cleared over half of biofilm organisms tested, offering a potential solution to chronic sinusitis.
Research on ancient human skeletons reveals negative changes in oral bacteria due to dietary shifts, including the introduction of farming and processed sugar. The study provides a new record of dietary impacts and health changes over time.
Researchers at UT Southwestern Medical Center identified a new enzyme, cyclic GMP-AMP synthase (cGAS), that acts as an innate immunity sensor. The discovery sheds light on the mechanism underlying immune responses to foreign DNA and may lead to new treatments for autoimmune diseases.
A group of researchers at Brown University has discovered how Streptomyces bacteria regulate genes to break down lignin, a highly stable polymer. The study sheds light on the molecular mechanisms behind lignin degradation and its potential applications in biotechnology.
Researchers found that Bacteroidetes were more predominant in fine dust, while Proteobacteria were associated with coarse sediments. This knowledge can inform management practices to minimize damage to soils caused by wind erosion.
Researchers discovered significant numbers of living microorganisms in the middle and upper troposphere, approximately four to six miles above the Earth's surface. The findings suggest that these microorganisms could play a role in forming ice crystals and impact weather patterns.
A new method for cutting DNA using a bacterial enzyme and RNA binding has been demonstrated to work in human cells, overcoming a major bottleneck in genome engineering. The technique, known as CRISPR-Cas9, is precise, inexpensive, and easy to program, holding promise for treating genetic diseases and curing AIDS.
Researchers found a compound called ebselen effectively inhibits the thioredoxin reductase system in Helicobacter pylori, which causes gastric ulcers, and Mycobacterium tuberculosis, which causes tuberculosis. Ebselen's mechanism targets bacteria lacking glutathione.