Articles tagged with Cellular Processes
A new study published in eLife reveals the folding speed limit of helical membrane proteins using a robust single-molecule tweezer method. The findings provide unprecedented insights into structural states, kinetics, and energy barrier properties, offering valuable guidance for advancing pharmaceutical research and design.
A groundbreaking study from the University of Copenhagen sheds light on the significance of transmitting epigenetic information during cell division for proper function of embryonic stem cells. The researchers found that histones play a crucial role in maintaining epigenome stability and cell identity.
The editorial discusses epigenetic mechanisms leading to oocyte quality loss, a significant factor in age-related fertility decline. Researchers highlight the importance of understanding this process to address the growing issue of advanced maternal age and its impact on reproduction.
Mitochondria are the 'powerplants' of cells that convert nutrients into fuel, but they also build fatty acids, a process that links nutrient sources to energy production. This award will enable Dr. Sara Nowinski to study this phenomenon and its impact on health and disease.
Researchers found that a healthy diet from an early age can suppress senescence and loss of fitness in yeast, even late in life. The study proposes an alternative to calorie restriction for improving healthy ageing through dietary change.
Research led by Vesna D. Garovic reveals that pre-eclampsia causes accelerated aging in women, leading to increased risks of cardiovascular and kidney disease. Women with a history of pre-eclampsia are more likely to develop chronic conditions at a younger age.
Scientists have discovered an additional source of genetic mutations that cause rare conditions like Huntington's disease. Expanded CAG repeat RNA can form aggregates that reduce global protein synthesis and lead to neurotoxicity.
Researchers at MIT have discovered a single scaffolding protein, TCOF1, responsible for forming a biomolecular condensate within the nucleolus. The findings suggest that this condensate played a crucial role in the evolutionary shift from a bipartite to a tripartite nucleolus 300 million years ago.
Researchers propose a novel theory of aging that suggests cell competition is a key factor in the process. The selective destruction theory (SDT) proposes a mechanism of aging that is independent of accumulating damage and consistent with epigenetic rejuvenation.
A team of scientists studied the impact of radiation on DNA, revealing that damaged areas are separated by a critical distance before breaking. The study found an exponential increase in DNA breakage time with distance, providing crucial information for effective DNA repair processes.
A team of researchers from Goethe University Frankfurt has discovered a central switch point in the mitochondrial signaling chain under misfolding stress. The mitochondria send two chemical signals to the cell when protein misfolding stress occurs, triggering a protective response that reduces misfolded proteins and stabilizes membranes.
Researchers at the University of Virginia Health System discovered that improper calcium signaling in mitochondria accelerates chronic inflammation, leading to age-related conditions. Increasing calcium uptake in macrophages may help prevent harmful inflammation and its effects on the brain.
Research shows that a diet rich in soluble fiber like inulin can renew intestinal epithelial cells and improve intestinal health. The study found that gut microbiota plays a key role in this process.
Researchers at Emory University have discovered a new paradigm for understanding how actin filaments are formed and fine-tuned in cells. They found that three proteins - formin, twinfilin, and capping protein - work together to regulate the activity of actin filaments, allowing for more precise control of cellular movement.
Researchers reveal a crucial link between DNA copy number and autophagy in embryonic development. High levels of autophagy are observed in cells with multiple copies of DNA, which can lead to programmed cell death.
A new study published in Aging (Albany NY) suggests that prior training can rescue cognitive decline in aging by improving task performance and strengthening memory processes. The research, conducted on rats, found that prior training enhanced short-term and intermediate memory, while also enabling encoding-boosted long-term memory.
Researchers replicate the movement of algae and hurricanes using laser beams and microscopic rotors, offering new insights into complex natural dynamics. The study demonstrates the ability to reproduce synthetically the dance of algae on a cellular scale.
Researchers developed MemTrax, a continuous recognition test for advanced cognitive impairment screening. The test quickly and accurately quantifies memory processing, storage, and retrieval, providing precise assessments of severity and rate of change over time.
Researchers have successfully visualized the three-dimensional structure of human tRNA splicing endonuclease TSEN, a crucial enzyme in tRNA maturation. The study reveals how TSEN recognizes and excises introns from precursor tRNAs, shedding light on its role in neurodegenerative disorders like pontocerebellar hypoplasia.
Researchers at UCalgary have found that Leishmania parasites exploit immune cells by targeting receptors to gain access and resist elimination, leading to stalled apoptosis and hindered vaccination efforts.
Cancer cells can hide and escape therapies leading to recurrence. Researchers identify three possible mechanisms: cancer stem cells, polyploidy, and senescence. Combination treatments involving chemoradiation-induced transitory senescence and senolytic therapies may be effective in preventing repopulation.
Kolomeisky aims to develop analytical models that quantify the role of heterogeneity in chemical and biological processes. He plans to explore its impact on catalytic reactions, antimicrobial peptides and early cancer development.
Researchers uncover cellular process that triggers inflammation, a vital immune response that can also lead to chronic inflammation and diseases like Type 2 diabetes and heart disease. By targeting this pathway, they hope to find treatments to curb chronic inflammation.
A new SCIVVS approach accelerates probiotics quality assessment by rapidly counting live bacteria, identifying species, and testing viability in just five hours. The method also tracks the source of individual cells in a sample, promising to transform current practice in quality control and intellectual-property protection.
Researchers have revealed key atomic structures of actin filament ends using cryo-electron microscopy. The study provides fundamental insights into the mechanism behind actin filament polarity, shedding light on disorders such as muscle weakness and heart problems.
Scientists have rebuilt the complex nanomachine in the laboratory that starts autophagy, revealing its sophisticated cellular mechanism. The study's findings could help develop future drugs to treat diseases based on a faulty autophagy process.
Researchers discovered that air pollution particles trigger autophagy, a cellular defense process, which has an upper threshold and may reduce its effectiveness against other threats. This finding provides new insights into the link between air pollution and lung disease.
Brain cancer cells use mitochondria from healthy astrocytes to boost energy production and amplify cancer stem cells, making glioblastoma more deadly and difficult to treat. Researchers discovered that acquiring mitochondria is a common process in glioblastoma, with implications for developing new treatments.
A team led by Professor Timo Betz has developed a 3D cell culture chamber to grow muscle and other tissue using high-resolution microscopy. The new system will enable scientists to mimic the mechanical situations that confront various living tissues in serious conditions, reducing animal testing and costs.
A research team at Hokkaido University has developed a system to deliver antioxidants to mitochondria in the liver, reducing oxidative stress and damaging caused by ROS. The system, called CoQ10-MITO-Porter, was found to be more effective when downsized particles were used.
Researchers have identified distinct senescence subpopulations and dynamic changes in the transcriptome of human cells undergoing senescence. The study provides new understanding of the heterogeneous nature of senescence and its impact on aging diseases.
A new study presents a chronic wound murine model that characterizes the role of persistent senescent cell accumulation in delayed wound closure. The molecular profiles of senescent cells demonstrate the adverse influence of SASP factors, highlighting a potential root-cause-driven therapeutic strategy.
Researchers discover that brain cells die from lack of energy when autophagy, a natural cleaning process, malfunctions. Compounds boosting NAD levels can improve neuron survival and combat age-related neurodegeneration.
Researchers uncover the critical link between cellular energy levels and mitochondrial damage through protein FNIP1. The study reveals that FNIP1 enables communication between AMPK and TFEB, instructing genes to remove damaged mitochondria and create new ones.
A study published in Circulation Research identifies the FHL5 gene as a key regulator of vascular disease, including heart attacks and aneurysms. The discovery advances our understanding of the underlying causes of vascular disease and provides new insights into genetic risk factors.
Researchers at Trinity College Dublin have discovered a new process that explains why cells have unique identities. By studying Polycomb protein complexes, the team found that different forms of these proteins recruit distinct complexes to DNA, shedding light on cellular identity and its potential impact on cancer treatments.
Researchers at Children's Hospital of Philadelphia discovered that viral proteins use phase separation to coordinate the complex process of replicating viral genomes and then encapsulating them in a viral particle. This process allows for the orderly and coordinated formation of infectious viral offspring.
Researchers at Ritsumeikan University have made a breakthrough in understanding how macrophages recognize microplastics, discovering an interaction between aromatic rings that drives this process. The study suggests that while microplastics may not induce acute inflammation, chronic exposure could lead to autoimmune diseases.
Researchers at the University of Surrey used a new technology called fluxomics to reveal how cells process nitrogen in TB-causing bacteria. The study identified glutamate as a crucial amino acid in the nitrogen metabolism, providing a target for new drug development.
Scientists studied F1-ATPase function in bacteria to clarify the angle of rotation during ATP hydrolysis. The study revealed three sets of short and long dwells associated with different intervals per revolution, resolving a long-term debate over the ATP-cleavage shaft angle.
Researchers at the University of Virginia have identified a promising approach to delay aging by detoxifying glycerol and glyceraldehyde, harmful by-products of fat. By activating an enzyme called AMAR, they found that microscopic worms lived longer and healthier lives, and similar effects were seen in other lab models.
Researchers explore cellular senescence's complex relationship with growth stimulation and cell cycle arrest, revealing potential anti-aging drug targets. Understanding these mechanisms is crucial for developing new treatments for age-related diseases.
A Princeton-led team discovered that abnormally large droplets in brain cells are linked to ALS, Alzheimer’s and a range of dysfunctions. The study provided a new understanding of the fundamental physical mechanism behind protein aggregation.
Researchers at KAUST have discovered the molecular mechanisms of DNA repair by studying the interaction between two enzymes, Lig1 and PCNA. Lig1 seals nicks in DNA by attaching to a ring-shaped protein called PCNA, which dislodges another enzyme FEN1 to prepare for sealing.
A germline mutation of topoisomerase II B affects the movement of proteins in the nuclei of cells with this mutation. The study reveals that the mutation impacts nuclear dynamics and provides a platform to understand the biological relevance of such mutations.
Researchers identified key metabolic pathways in tumor-associated macrophages that contribute to cancer development and progression. Targeting these pathways may provide a new perspective for immunotherapy-based cancer treatments.
Researchers found that cells exchanging amino acids and glycerol with each other lived up to 25% longer. The study suggests this collaborative exchange extends the lifespan of cells within a community as a whole.
Researchers at Washington University in St. Louis demonstrated that eukaryotic cells can control organelle size by exhibiting random bursts of growth, maintaining a narrow window of precision within this noise., The study suggests a biophysical mechanism for the robustness and universality of organelle size control.
Researchers discovered a smart molecular glue formed by proteins clinging to microtubules, enabling nucleus positioning during cell division. The 'glue' enables mechanical forces to be transduced as desired, with flexible properties allowing it to withstand tension.
Researchers at Kyoto University have discovered a vital role of two proteins, ABCA1 and Aster-A, in maintaining the asymmetric distribution of cholesterol within cells. This process allows for selective control over substances entering and leaving cells.
A Collaborative Research Centre investigates animal navigation using the Earth's magnetic field. The study focuses on vertebrates, including birds and fish, aiming to protect endangered migratory species.
Researchers discovered that toxins produced by Vibrio bacteria hijack cell processes, redirecting key proteins into "roads to nowhere". This abnormal filament formation wastes cell resources and raises questions about its potential role or necessity.
Researchers found that propofol decreases intracellular transport of proteins in neurons, impacting vesicle movement and axonal delivery. This study contributes to understanding how propofol causes anesthesia and may lead to the development of better anesthetic drugs.
Mount Sinai researchers catalogued thousands of sites in the brain where RNA is modified throughout the human lifespan, increasing with age. This study provides a model depicting how A-to-I editing evolves over a lifetime, shedding light on its role in health and disease.
Johns Hopkins Medicine researchers have developed a novel genetic engineering approach to deliver gene therapy by utilizing a cell's natural process to
A new study has discovered that MTCH2, a protein essential in various cellular processes, acts as a 'door' for proteins to access the mitochondrial membrane. The finding opens up potential avenues for cancer treatments by harnessing apoptosis, a programmed cell death mechanism.
Scientists at NTU Singapore have found that a stress response in cells, when 'switched on' at a post-reproductive age, could be the key to slowing down aging. The study showed that this stress response extended the lifespan of roundworms fed a high-glucose diet.
Researchers at NC State University have developed a reproducible method for studying cellular communication in plant cells using 3D bioprinting. The study found that more than half of the bioprinted cells were viable and divided over time, with soybean embryonic cells remaining viable for two weeks after bioprinting.
Researchers at the University of Bonn have identified a mechanism that helps dendritic cells migrate more quickly to lymph nodes. The discovery reveals that forming multiple centrosomes enables these immune cells to stay on course longer before continuing their search.
Poliovirus researchers at Umeå University have gained a new understanding of how the virus behaves in infected cells, revealing key protein roles and cellular processes involved. This breakthrough could lead to the development of new antiviral treatments and vaccines targeting the autophagy system.