Articles tagged with Bacterial Dna
Researchers at Rice University discovered that bacterial cells use SMC proteins to enable the separation of their circular chromosomes during replication. This process relies on repulsive forces strengthened by SMC, allowing the cell to split neatly into two with its own copy of DNA.
Researchers used an experimental evolution approach to map genetic mutations in A. baumannii treated with tigecycline and colistin, confirming and extending existing knowledge on major mechanisms of resistance. The study's findings aim to develop genomics-based predictions of drug resistance and susceptibility.
Researchers identified 27 species of bacteria and fungi that collectively increase the risk of pancreatic cancer by 3.5 times. The study analyzed saliva samples from 122,000 healthy individuals and found that boosting the mouth's microbiome may protect against cancer.
Researchers have discovered a gene that allows queuosine to enter cells, opening the door for potential therapies to leverage its role in cancer suppression, memory, and brain function. The identification of SLC35F2 sheds light on the vital micronutrient's importance in human health.
The study investigates how early membranes may have selected the right-handed sugars and left-handed amino acids used in all life today. The researchers found that right-handed DNA and RNA sugars more easily passed through membranes with properties similar to those of archaea.
Researchers have found new organisms that can capture carbon dioxide and clean pollutants from the environment. By exploring extremophiles in homes, scientists can gain insights into their unique characteristics and develop sustainable solutions.
A Kobe University team developed a DNA base editing technology that enables precise control over microorganism genetic content without using template DNA from other organisms. They successfully applied this technique to industrially important Lactobacillus strains, creating safer probiotics for people with type 2 diabetes.
A new family of Ssn endonucleases was discovered, enabling targeted cuts in single-stranded DNA. This breakthrough sheds light on a crucial genetic mechanism with significant promise for biotechnology applications, including gene editing, DNA detection, and molecular diagnosis.
Researchers at ISTA have discovered a new DNA marker, N4-methylcytosine (4mC), crucial for sperm function and fertility in the liverwort Marchantia polymorpha. The team found that high levels of 4mC are necessary for agile sperm development, affecting swimming speed, direction, and fertilization success.
A case study found Bartonella henselae, Babesia odocoilei, and Babesia divergens-like MO-1 DNA in brain tissue samples from a young child with seizures. The presence of these pathogens suggests their potential role in complex neurological illnesses.
A novel fluorescent biosensor captures spatio-temporal dynamics of STING activation in response to aberrant DNA, enabling visualization of single cell and population responses. This study reveals new insights into the immune response to chromosomally unstable tumours and potential avenues for treatment.
A new RNA barcoding method allows researchers to track gene transfer in bacterial communities without disrupting their natural environment. The technique has potential applications in predicting antibiotic resistance outbreaks, engineering microbiomes for pollution cleanup, and programming microbes for specific tasks like producing bio...
A study found that even with impeccable cleaning, hospital sink drains can host bacterial populations that change over time. Dominant species include Stenotrophomonas and Pseudomonas aeruginosa, known to cause ventilator-associated pneumonia and sepsis.
Researchers at UCSF have discovered how a unique type of virus called a jumbo phage protects itself inside bacteria. The shield works via a set of secret handshakes that allow only useful proteins to pass through, giving the phage an advantage over regular phages when fighting infections.
Research reveals that bacteria form species through a process called homologous recombination, which exchanges genetic material across the entire genome. This exchange acts as a cohesive force, keeping members of the same species similar and maintaining distinct species boundaries.
Researchers have discovered a complex mechanism that allows bacteria to build resistance to antibiotics, involving a KorB-KorA regulatory system. This finding offers a fresh insight into long-range gene silencing in bacteria and provides a potential target for novel therapeutics.
A new study reveals that anti-defense genes near the DNA entry point enable plasmids to overcome CRISPR system, promoting genetic transfer between bacteria. This discovery could pave the way for developing tools to address antibiotic resistance and genetic manipulation methods.
A Virginia Tech student is exploring a potential new treatment avenue for Lupus using DNA-like molecules, with the goal of alleviating symptoms and reducing organ damage. The researcher's approach has shown promise in cell cultures and may lead to less invasive treatments that harness the body's natural immune responses.
Scientists have developed a novel enzyme, SUPer RNA EcoGII Methyltransferase (SUPREM), which can selectively modify RNA and has high methylation activity. This tool can be used to investigate RNA modifications in various diseases, providing new insights into their role in cell health.
A team of researchers has discovered diverse microbial communities in the Atacama Desert, the driest place on Earth. They developed a new method to separate extracellular and intracellular genetic material, allowing for better insights into microbial life in low-biomass environments.
New research from the University of Chicago shows that gut bacteria can acquire a gene that shuts down their own deadly weapon and activates a new one, allowing them to outcompete other bacteria. This transfer of genes enables the bacteria to carve out niches in the tightly packed recesses of the gut.
Researchers at MedUni Vienna identified a potential way forward for targeted therapies that do not rely on antibiotics. The study focused on the restriction-modification system of Borrelia bacteria and discovered its importance in protecting the bacteria against foreign DNA.
A new study has identified novel strains of microbes that have adapted to use limited resources in cities, including those found in Hong Kong's subways and skin. These microbes can metabolize manufactured products, posing health risks if they are pathogenic.
For the first time, researchers have demonstrated how mechanical forces affect gene expression by showing that RNAP polymerase remains on the DNA template and can be pulled to start a subsequent cycle of transcription. This force-directed recycling mechanism can change the relative abundance of adjacent genes.
Scientists extracted DNA from ancient cheese samples found in Tarim Basin mummies, revealing a new origin for kefir cheese and shedding light on the evolution of probiotic bacteria. The study suggests that kefir culture has been maintained in Northwestern China since the Bronze Age.
A new study from European universities has developed a method to analyze wastewater data from seven major cities, identifying thousands of disease-causing bacteria, viruses, and antimicrobial resistance. This approach can detect potential health threats simultaneously, potentially preventing epidemics from escalating into outbreaks.
Scientists at Gladstone Institutes have discovered a diverse range of retrons that can edit DNA more quickly and efficiently than current methods, including CRISPR. The new retrons showed high editing rates in both bacteria and human cells, with some performing 10-fold better than the gold-standard retron.
Researchers at Gladstone Institutes have developed a streamlined way to engineer bacteriophages, viruses that naturally kill bacteria. The new technique uses retrons to edit phage genomes, allowing for the creation of numerous variants and paving the way for alternative treatments for antibiotic-resistant infections.
A new study by Columbia researchers shows that bacteria can create free-floating and ephemeral genes, raising the possibility that similar genes exist outside of our own genome. These 'hidden genes' are essential for cell survival and could lead to new genome editing tools.
Researchers analyzed ancient DNA from an 8,000-year-old sheep bone and found evidence of Brucella melitensis, a pathogen causing significant harm to livestock. The study suggests that brucellosis evolved around the same time as farming development, with early farmers creating conditions for pathogen host-jumping.
A study published in Nature used DNA sequencing to identify fungi from air samples worldwide, providing groundbreaking knowledge about their occurrence and seasonal variation. The research aims to predict the fate of fungal species under global change and has significant implications for biomonitoring and biodiversity forecasts.
A team of scientists at Gladstone Institutes has developed a new method that enables them to make precise edits in multiple locations within a cell—all at once. They created a tool using molecules called retrons to efficiently modify DNA in bacteria, yeast, and human cells.
Researchers sequenced DNA of 87 structurally colored bacteria to identify genes responsible for their glittering structures. The findings could lead to environmentally friendly dyes and materials.
A team of scientists captured a clear picture of the structural changes and intermediates that form during the initial stages of RNA polymerase binding to DNA. The findings provide new insights into the fundamental mechanisms of transcription and shed light on long-standing questions about the initiation mechanism.
Scientists have introduced a novel approach to recreate bacterial methylation patterns, enhancing DNA transformation. This enables the genetic modification of pathogenic bacteria and probiotics, leading to potential new antibiotics and cell-based therapies.
When E. coli detects damage from antibiotic Ciprofloxacin, it sends out an SOS signal that alters cellular activity. The bacteria then mutate their DNA to repair the damage or adapt to resist the antibiotic. Researchers studied this process in detail using bioreactors and found all genes are activated simultaneously at the protein level.
Researchers have identified a potent and unique way to kill drug-resistant bacteria using a repurposed compound called LEI-800. The compound targets the bacterial enzyme DNA gyrase, which is essential for bacterial growth and has not been targeted by existing antibiotics.
A new study has found that patients diagnosed with schizophrenia or another psychotic disorder are three times more likely to have Bartonella DNA in their blood than adults without these disorders. The study suggests a potential role for vector-borne pathogens, such as fleas and ticks, in mental illness.
A study from Michigan Medicine reveals a connection between neutrophil activation and severe cytokine release syndrome (CRS), a potentially life-threatening reaction to CAR T-Cell therapy. Researchers identified biomarkers of NETosis, a process in which neutrophils create webs that may contribute to CRS.
A novel real-time PCR method has been developed to detect and identify the emerging zoonotic foodborne pathogen E. albertii, which is often misidentified as E. coli. The study found that E. albertii can survive in the human intestinal tract for approximately four weeks.
Researchers created GraSSRep and rhea, tools that outperform current methods for handling repeats and structural variants in metagenomic data. These methods use self-supervised learning and graph neural networks to analyze microbiome data, offering new insights into biological processes and potential applications in antibiotic resistance.
Researchers found microbial communities in Atacama Desert soil, dominated by Actinobacteria and possibly relying on gypsum for water. The discovery hints at a previously unknown deep biosphere under hyper-arid desert soils, with potential implications for the search for extraterrestrial life.
Researchers have developed a DNA vaccine against zika virus that induces a strong immune response and protects mice from the virus. The vaccine uses genetic engineering to encode specific viral proteins and stimulates an adaptive immune response, with high levels of neutralizing antibodies produced.
Researchers develop a computational approach to predict mutations leading to better proteins, with potential applications in neuroscience research and gene therapy. The technique uses a convolutional neural network to create a fitness landscape, enabling faster optimization of proteins.
Soil microbes were analyzed near the Centralia mine fire, revealing new insights into how bacterial communities respond to intense environmental change. The team found that species that were active or dormant changed after the fire, but some populations recovered with new bacteria being blown in by wind.
Scientists have developed a new way to alter the DNA of bacterial cells using high-frequency radio waves, outperforming traditional industry techniques. The process shows high efficiency and gentleness, with 91% of E. coli cells taking on the DNA after just three minutes.
A new method uses digital DNA melting analysis to detect pathogens in blood samples, producing results in under six hours and reducing false positives compared to traditional blood cultures. This technology has the potential to save lives by accurately diagnosing sepsis, a leading cause of death worldwide.
Researchers analyzed ancient fecal samples to assess what details of the ancient people's lives could be ascertained from these samples. The study found DNA fragments of human betaherpesvirus 5, adenovirus F, and other viral and bacterial genetic material from thousands of years ago.
Researchers have developed CRISPR off-switches to mitigate off-target effects, a major concern in genome editing. The new technology, based on anti-CRISPR proteins, can block CRISPR-Cas3 machine function and prevent unintended edits.
Researchers analyzed DNA from birch tar samples, finding similarities with modern human mouth microbes and increased bacteria associated with gum disease. The study suggests that ancient humans' frequent use of teeth for tasks may have led to poor oral health.
A team of researchers identified a CTP-dependent transcription factor controlling Shigella virulence gene expression, providing new avenues for combating this and related bacterial pathogens. The discovery sheds light on the molecular mechanisms underlying bacterial pathogenesis.
Scientists unravel DnaA's role in DNA replication initiation, shedding light on bacterial cell growth and reproduction. The discovery reveals a previously unknown binding pocket within DnaA, enabling the capture of single DNA strands.
Researchers at NTNU have developed a new method to study how bacterial signaling proteins react to treatment, paving the way for effective killing of MRSA. The method has shown a combination of two substances kills MRSA more effectively than when used separately.
Researchers have found that RNA polymerase can recognize and transcribe artificial base pairs in the same manner as natural ones, paving the way for custom protein design. This breakthrough could revolutionize medicine by creating new medicines through designer proteins.
Researchers at Norwegian University of Science and Technology have developed a simple tool to identify all genetic material in bacteria. This allows for quicker detection of pathogens, enabling informed decisions on antibiotic use.
Researchers at KAUST discovered that certain combinations of stressors increase gene-transfer rates, while others reduce it. They found synergistic effects from combining stressors like UV light and disinfection chemical byproducts, as well as antagonistic effects from chloroform.
A team of scientists has discovered a second toxin produced by the cyanobacterium Aetokthonos hydrillicola, which is highly toxic and similar to substances used in cancer treatment. The findings could lead to the development of new anti-cancer drugs.
The study found that despite invasive strains, all yeast lineages belonged to the ethanol fermentation environment, keeping the industrial process stable. The researchers plan to investigate yeast population dynamics in more detail, including the impact of external agents like bacteria.
The team successfully completed the sequencing of the Y chromosome using long-read sequencing technology and innovative computational assembly methods. This achievement adds 41 additional protein-coding genes and provides crucial insight into reproduction, evolution, and population change.
A team of researchers developed a computational simulation that explains key mechanism of DNA segregation, providing new insights into the distribution of genetic information during bacterial cell division. The study reveals fundamental biochemical principles relevant to synthetic biology and medical applications.