Researchers discovered that MMP-1 operates as an extracellular molecular motor converting chemical energy into motion by breaking collagen bonds. This process contributes to tissue growth, development, and repair, and may even aid in cancerous invasion.
Researchers at UNC Health Care have identified a new mechanism by which Polycomb group proteins silence genes in cancer cells. The study found that ubiquitination of histone H2A is involved in this process, providing insight into gene expression regulation and potential targets for cancer treatment.
The AAAS has announced the winners of the 2004 Science and Engineering Visualization Challenge, showcasing outstanding visualizations across five categories: photography, illustration, graphics, interactive media, and non-interactive media. Marna E. Ericson took first place in photography for her image capturing tick nymphs' autofluore...
The NSF and AAAS announced the winners of the 2004 Visualization contest, which spanned research fields from viral medicine to Earth science. The top entries were selected in categories such as photography, illustration, graphics, interactive media, and non-interactive media.
Yale researchers have been awarded a $7.5 million grant to investigate the role of viruses in cancer development. The grant will support studies on human papillomaviruses, Epstein-Barr Virus, and Kaposi's Sarcoma Herpesvirus, focusing on viral genes and cellular pathways that lead to cancer.
UCSF researchers publish first atomic-level structure of the channel controlling ammonia passage in and out of cells. The discovery provides insights into toxic effects and potential treatment options for life-threatening diseases caused by ammonia toxicity.
Dr. Brian Strahl, an assistant professor at UNC School of Medicine, will attend a White House ceremony in honor of his selection for the Presidential Early Career Award for Scientists and Engineers. He was chosen for his exceptional potential for leadership and innovative research in chromatin biochemistry and gene regulation.
The Institute for Molecular Biophysics has been awarded a National Science Foundation grant to acquire the world's first 4Pi nanoscale microscope in the US. This cutting-edge technology will enable researchers to study genes and chromosomes at unprecedented resolution, shedding light on disease mechanisms and developing new treatments.
A $18 million bioinformatics center will provide a single web-based entry point for infectious disease researchers to access data on hundreds of deadly microorganisms. The center aims to accelerate research into the biology and evolution of these pathogens, with a focus on eight key species.
Researchers have developed a method that could vastly improve the ability of atomic force microscopes to 'see' the chemical composition of a sample, follow variations of the sample, and map its topographic structure. This new technique allows for molecular-scale imaging with increased sensitivity.
Researchers discovered that nucleosomes can move to different spots in the genome, enabling efficient gene expression and regulating gene activity. This chromosomal remodeling process allows cells to turn genes on or off as needed.
A new study links psoriasis to genetic variations on chromosomes 6 and 4, specifically the MHC region. This meta-analysis confirms previous findings and highlights a potential focus for future research.
Scientists used gene therapy to deliver RNA that silenced the disease-causing SCA1 gene in mice with spinocerebellar ataxia 1, preventing neurodegeneration. The approach also protected brain cells from destruction and prevented protein clump buildup.
The study reveals that mice lacking the Mus81 protein are fertile and can help monitor health more closely. Researchers explore whether the mutation is tied to human tumour formation, allowing for targeted treatment strategies.
Researchers identified sex-specific differences in gene expression in various tissues, including liver, kidney, and reproductive organs. These differences were involved in drug and steroid metabolism, as well as regulation of fluid balance, with implications for understanding how males and females respond differently to drug treatments.
Scientists identify LARGE protein as a key player in restoring alpha-dystroglycan function, which is critical for normal muscle function. The discovery may lead to new treatments for muscular dystrophies and other muscle diseases.
Kenneth Baldwin will lead a $2.5 million NASA program to develop exercise programs for astronauts, addressing physical impacts of space travel. The research aims to enhance the new NASA Space Exploration Initiative, enabling humans to work for months on the International Space Station and potentially send humans to Mars.
Researchers discovered a genetic mutation that interferes with heart muscle contraction, leading to defective heart valve formation. This study suggests that temporary glitches in early heartbeat may cause valve defects, potentially leading to new treatments for congenital heart defects.
Ribosomes, critical sites of protein synthesis, speed up chemical transformation through entropic origin, not lowering energy barrier like conventional enzymes. This discovery helps scientists understand ribosome function and design inhibitors for protein synthesis.
Ferré-D'Amaré's groundbreaking research on RNA crystallization and ribozymes has significantly advanced the understanding of molecular structures in living organisms. He developed new techniques to obtain RNA crystals, enabling detailed studies of RNA-protein interactions and biochemical functions.
The American Society for Microbiology has recognized Hopkins Marine Station's dedication to microbiology research and education. The station has served as Stanford University's marine biology research and education facility since 1892, offering a popular summer course on microbiology.
Researchers at University at Buffalo are developing an inorganic compound called DDFPe as a potential blood substitute. The compound produces microbubbles that pick up and deliver oxygen to tissues, making it more effective than current hemoglobin-based blood substitutes.
A new experimental drug has shown to completely prevent arrhythmia-related deaths in mice with the same molecular defect as people with heart failure. The drug works by patching a leak in the heart's calcium channel, which can trigger fatal arrhythmias, and has great potential for slowing the progression of heart failure.
A new study by researchers at Case Western Reserve University has found that an abnormal form of the prion protein from one mammal species can infect another species, bypassing natural barriers. This discovery sheds light on the mechanisms behind prion diseases like mad cow disease and Creutzfeldt-Jakob disease.
Researchers at the University of South Florida have developed a biosensor-regulated gene therapy that protects heart muscle cells from further injury after a heart attack. The therapy uses an oxygen-sensitive switch to turn on protective genes, which were shown to limit tissue scarring and improve heart function in mice.
Researchers at the University of Pennsylvania have successfully designed better bacteria killers by modifying arylamide-based polymers inspired by frog skin. The modified polymers can disrupt bacterial cell membranes without harming human cells, making them a promising new approach to combat antibiotic resistance.
Researchers isolate three strains of yeast prions that transmit life-changing information in yeast cells without DNA or RNA. These protein-only particles act like genes, disrupting normal cell function and leading to the formation of amyloid plaques associated with neurological disorders.
The Kavli Institute for Brain Science at Columbia University will focus on analyzing and deciphering neural signaling in complex brain systems. Dr. Eric Kandel, a Nobel laureate, is the first director of the institute.
Researchers are studying how the heart changes its energy source from fat to glucose in end-stage heart failure, which may improve pumping function and treatment outcomes. The new program aims to bridge the gap between basic genetic data and clinical trials for heart failure patients.
A study of Latino children found that nearly three in ten have impaired glucose tolerance, a precursor to type 2 diabetes, while obesity rates are twice those of non-Latino peers. Insulin resistance and metabolic syndrome increase the risk of chronic diseases.
Scientists have solved the puzzle of DHFR-TS, an enzyme needed by Cryptosporidium for reproduction. The study's results will help researchers design targeted drugs to combat the parasite and better understand related protozoan families.
Two Vanderbilt researchers have received NAAR fellowships to develop new tools for identifying and understanding the genetic causes of autism. Lynnette Henderson is working on extending Stone's Screening Tool for Autism in Two-year-olds, while Jacob McCauley will conduct a genetic analysis of serotonergic and GABA-ergic genes.
Researchers at the University of Illinois at Urbana-Champaign have identified anastellin, a natural agent derived from the cell adhesion protein fibronectin. Anastellin stabilizes the extracellular matrix, restricting the motion of cancer cells and creating strong 'jail bars' to prevent metastasis.
Researchers found that T-type calcium channels are essential for normal nitric oxide-controlled relaxation, and their loss leads to constricted coronary arteries. The study provides insight into the role of this channel in coronary artery relaxation and may lead to new therapeutic targets.
The University of Minnesota has received a grant to sequence the complete genome of Arthrobacter aurescens, a soil bacterium that can break down environmental pollutants. The project aims to gain tools, such as genes and enzymes, to clean up contaminated environments.
A USC study finds that increasing insulin sensitivity can help prevent chronic diseases in Latino children. Overweight children with metabolic syndrome are less physically fit, but improving fitness could deter these diseases.
The Tylenol Scholarship is one of the largest merit scholarship programs in the United States for all health-related studies. Since its inception in 1991, more than $6 million in scholarship grants have been awarded to over 5,000 students by McNeil Consumer & Specialty Pharmaceuticals.
Phytoplankton's shift to red pigments occurred due to a global ocean oxygen depletion, which paved the way for their evolution. This discovery reveals how the ocean's chemistry has been dominated by red phytoplankton ever since.
Experts warn that taxing tanning may lead to increased use of indoor tanning beds among teens, who already receive too little UV light. The lack of proper sunscreen use is a major concern for public health.
Researchers at UNC School of Medicine have identified a novel enzyme that halts histone synthesis when no longer needed, preventing lethal cell damage. The discovery sheds light on the complex regulatory mechanisms governing histone mRNA expression.
Researchers at UNC have identified a protein that directly regulates lysine methylation on core histone protein H3, leading to gene repression. This discovery sheds light on the mechanisms of epigenetic signals and their role in regulating gene expression.
Researchers at TSRI introduce a revolutionary method to add unnatural amino acids to the genetic code of Saccharomyces cerevisiae yeast. This allows for unprecedented control over protein structure and function, enabling new insights into biological processes and potential therapeutic applications.
Researchers at Vanderbilt University have identified a distinct pattern of protein expression that can predict poor or good lung cancer prognosis. The protein profile was used to analyze tiny amounts of tumor tissue and accurately distinguish between different types of lung cancer.
The UNC-led trial is the first human test of an HIV vaccine pioneered at UNC. The vaccine targets cells in lymph nodes and induces an immune response by expressing a small section of genetic material from HIV, aiming to protect against disease if exposed. Researchers hope to refine the vaccine for subsequent generations.
UT Southwestern researchers have defined sites in human genes most prone to mutation, which could lead to discovery of genetic bases of many human diseases. The study identified distinctive DNA sequence patterns and rules for predicting mutations.
Researchers at U. Iowa identified two ion channel genes that detect low salt concentrations in fruit flies, a model organism for studying human salt-sensing mechanisms. Disrupting these genes impaired the ability of young flies to detect low salt, highlighting their role in the detection of salt.
Scientists have determined the structure of the 2G12 antibody, which neutralizes HIV by binding to sugars on its surface. The antibody's unique structure could provide a template for designing an antigen that triggers the body to produce it, potentially leading to an HIV vaccine.
Biotechnology Heritage Award honors William Rutter's significant contributions to the development of biotechnology through discovery, innovation, and public understanding. Rutter's entrepreneurial spirit and management skills played a crucial role in the growth of biotechnology as a discipline and global industry.
Researchers found that a muscle protein called dystroglycan plays a crucial role in forming normal myelin sheaths, which allow nerves to transmit signals efficiently. The study suggests that disruption of this protein may contribute to various neuropathic disorders.
Researchers discovered that blinking behavior in single-molecule wires is caused by temporary breaks in chemical bonds between the molecule and gold contacts. The study highlights limitations of the current gold surface material for electronic circuits.
Researchers at the University of Toronto have discovered a gene, Fkbp6, essential for male fertility but not female fertility. The study shows that the gene plays a critical role in sperm cell development and chromosome pairing, highlighting potential new principles in how cells control the number of chromosomes.
Researchers discovered rapid evolution in the white-footed mouse population, with significant changes in gene sequence frequencies over three 50-year intervals. The findings suggest that humans may be a cause of this rapid evolution, and challenge current phylogenetic and phylogeographic methodology.
A team of scientists discovered that small heat-shock proteins play a key role in delaying both aging and age-related diseases such as Alzheimer's, Huntington's, and Parkinson's. The proteins inhibit protein aggregation, suggesting a molecular link between the two conditions.
The study identifies dysferlin as a critical protein involved in the repair process, which is faulty in two types of muscular dystrophy. Without dysferlin, muscles are unable to heal themselves, leading to progressive muscle degeneration.
Researchers at the University of Illinois have discovered a protein that reaches an unprecedented folding speed of one to two microseconds, significantly faster than previously thought. By studying this phenomenon, they were able to determine the speed limit of protein folding and challenge existing theories.
Researchers at Columbia University have made significant discoveries in understanding the immune system and brain function, including the identification of key genes involved in odor recognition. Their work has provided new insight into how smell is represented in the brain.
Researchers have found a biological transformation that occurs at an astonishingly slow rate of 1 trillion years in the absence of an enzyme catalyst. Enzymes can speed up this reaction by millions of times. This discovery provides insight into how natural selection has evolved enzymes to accelerate biochemical processes.
A study found that mice genetically engineered to lack a molecule called Stem Cell Antigen-1 (Sca-1) experienced normal bone development but exhibited decreased bone mass and brittle bones as they aged. The researchers believe that defective maintenance of stem cells may contribute to age-related osteoporosis in humans.
Researchers have discovered that caspase-8 is essential for the activation of T-cells at the start of the immune response. The study found that inhibiting caspase-8 significantly decreases the immune response.
Researchers found a link between African-origin genetic markers and decreased insulin sensitivity in children, suggesting a genetic basis for the disparity. The study also highlights the importance of genetic factors in understanding and preventing type 2 diabetes in black communities.