Articles tagged with Cell Membranes
Scientists propose that early life forms utilized deep-sea hydrothermal vents to harness energy, driving the emergence of complex cellular structures. The new theory explains why all living organisms conserve energy in the form of ion gradients across membranes.
Bisphenol A, a widely used industrial chemical, has been shown to block essential calcium channels in human and mouse cells. This can lead to adverse effects on heart muscle contraction, enzyme activity, and nerve cell communication. The study suggests that alternatives to BPA should be developed to replace it in various products.
Scientists at Johns Hopkins Medicine used a synthetic molecule to stimulate cell movement, bypassing the cells' usual sensing mechanism. This breakthrough provides powerful tools for studying cell movement and its role in cancer progression and immunity.
Researchers at the University of Sheffield have developed a new method for delivering stem cell therapy to treat corneal blindness. The technique uses biodegradable discs loaded with stem cells that can multiply and repair damaged eyes naturally. This approach has the potential to be more accessible and safer than current treatments.
Researchers discover Anthrax Toxin Receptor 2a (Antxr2a) plays a crucial role in orienting cell division during embryonic development, guiding the positioning of chromosomes and mitotic spindle. This finding sheds light on the physiological function of Antxr2a and its potential involvement in other biological processes.
A team of scientists from the University of Pennsylvania School of Medicine and Temple University discovered an essential mechanism that regulates calcium uptake into mitochondria, crucial for ATP synthesis. The newly described protein MCUR1 interacts with MCU to establish proper calcium levels under normal conditions.
Dr. Debra Auguste aims to develop targeted treatments for four metastatic breast cancer populations using engineered liposomes that deliver short interfering RNA to inhibit tumor progression and metastasis. The goal is to enhance cooperative binding, reduce cell migration, and improve treatment efficacy.
Research teams at Baylor College of Medicine used cryo-electron tomography to study the effects of genetic mutations on rod sensory cilium architecture. The findings suggest that aberrant trafficking of proteins is responsible for photoreceptor degeneration, highlighting a new model for understanding ciliopathies.
Researchers at MIT developed a microfluidic device that captures circulating tumor cells using DNA 'tentacles' inspired by jellyfish. The device increases flow rates 10 times higher than existing ones, enabling rapid processing of blood samples and potential monitoring of cancer patients.
Neutron scattering experiments have provided new insights into the origin of AmB's side effects, revealing that it interacts differently with fungal and animal cell membranes. The study suggests that AmB can open up holes in fungal cells but is unable to do so as readily in human cells, leading to harmful side effects.
Researchers at Caltech have successfully simulated the biological function of a protein channel called the Sec translocon, which allows specific proteins to pass through membranes. The new computational model reveals that both equilibrium and kinetic effects play a crucial role in determining the fate of proteins entering the translocon.
Researchers at UMass Amherst have found a way to deliver bio-active cargo such as proteins and synthetic molecules into naïve T cells using a new synthetic protein transduction domain. This breakthrough enables the study of crucial immune functions and holds great potential for therapeutic applications in the clinic.
A new method, SPR microscopy, allows for quantitative analysis of protein interactions on cell surfaces, streamlining drug development and diagnostic biomarker identification. The technique provides high-resolution spatial and temporal information, revealing dynamic processes evolving over time.
A new method involves molecularly engineering a model synapse to precisely control GABA receptors, which is crucial in brain chemistry. Understanding how these receptors work can lead to creating safer drugs with fewer side effects for disorders like epilepsy and anxiety.
Researchers have discovered a genetic process that can restore function to a defective protein responsible for cystic fibrosis. By manipulating a specific microRNA network, they were able to partially restore the protein's function and increase its production.
Researchers have documented the physiological events in lace plant leaves during programmed cell death (PCD), revealing how cells dismantle and disappear. The study used long-term live cell imaging and staining to observe the progression of PCD, which is essential for producing the characteristic holes in the leaves.
Researchers have found that alpha-synuclein protein build-up inside neurons leads to misfiring due to calcium fluxes, a new insight into Parkinson's disease and other neurodegenerative disorders.
A study at Stanford University reveals the mechanical mechanisms in living cells, showing that cadherin-catenin-actin structure exerts force inside and between cells in living tissues. This understanding could have implications for biological processes such as tissue development, tumor growth, and complex organism formation.
A new research in the FASEB Journal suggests that the AMPK protein helps protect sensory cells in the inner ear from permanent damage and maintains hearing after extreme noise exposure. The discovery provides a target for new preventive strategies and potentially even treatments for earbud deafness syndrome.
Researchers at Aarhus University have discovered a new immune alarm signal that triggers the human immune system before a virus attack. This knowledge may lead to more efficient vaccines and better treatment of recurrent infections, potentially reducing the risk of diseases like AIDS, hepatitis, influenza, and cold sores.
A team of chemists at the University of Geneva has developed a rare halogen bond that can transport anions across phospholipid bilayer membranes, similar to cellular structures. This discovery has significant implications for medical applications, particularly in treating diseases linked to ion transport issues.
Researchers at Cardiff University have discovered a new interaction between two well-known molecules that could lead to a beneficial therapy against necrosis and inflammation in the body. The study found that blocking the effect of Bcl-2 on calcium pumps could be an attractive target for treating pancreatitis and pancreatic cancer.
A new study reveals that protein knots, a complex structure, are strongly conserved in nature, suggesting they have specific functional advantages. The researchers found that knotting patterns are highly conserved, with flexible points of entry, which may contribute to the stability and function of proteins.
Researchers at EMBL found that 15% of human genes influence the secretory pathway, a complex network for transporting molecules to the cell membrane. This discovery suggests cells have evolved a strategy to adapt to environmental changes.
Scientists at Johns Hopkins Medicine have engineered cells that behave like AND and OR Boolean logic gates, producing an output based on one or more unique inputs. This breakthrough could lead to the development of computers that use cells as tiny circuits.
Researchers at Salk Institute create cell-free expression system to synthesize and analyze integral membrane proteins, solving their three-dimensional structures in just 18 months. This breakthrough enables precise biochemical mechanisms understanding and targets the proteins with new drugs.
Researchers at the University of Bonn have visualized the transport of messenger RNA from the cell nucleus to the cytoplasm using a highly sensitive light microscope. The study reveals that the process involves brief collisions with the nuclear membrane and quality control checks, resulting in only about every fourth successful export.
Scientists at the University of Leeds are developing more efficient biofuel cells that can harness light and hydrogen gas to create energy. The new technology has the potential to be used indefinitely, making it a promising alternative to traditional batteries.
A serendipitous accident in shipping a donated human retina led to the discovery of a previously undetected mechanism causing choroidal neovascularization, a leading cause of vision loss. Researchers found that adhesion defects play a crucial role in maintaining the retina's structure and preventing blood vessel invasion.
Patel's research uses novel computer modeling methods to study the biophysics of model cell membranes, revealing non-intuitive behavior of polar molecules. The NSF Career Award will also support a new computational-chemistry course for Newark High School students.
Scientists at USC have created a pathway to affordable solar cells made from tiny nanocrystals that can be printed onto clear surfaces. The new method overcomes a key challenge in liquid solar cell technology by stabilizing the nanocrystals and allowing for efficient electricity transmission.
Researchers found that antidepressant Zoloft accumulates in yeast cells, inducing autophagy and causing membrane distortions. This response supports the idea that depression may be linked to diminished BDNF secretions and suggests alternative targets for next-generation antidepressants.
Researchers at Linköping University have identified 20 molecular interactions in voltage sensors that lead to pore opening, shedding light on a key mechanism. The study's findings are crucial for developing new medicines targeting electrical excitability disorders.
Researchers at Johns Hopkins identified a gene, methionine sulfoxide reductase (MSRA), that modifies the risk of newborns with cystic fibrosis developing neonatal intestinal obstruction. This study may lead to a better understanding of how intestines work and pave the way for identifying genes involved in secondary complications.
A new optical imaging system uses speckle imaging to measure differences in light bouncing off red blood cells, identifying cells infected with malaria parasites. The technique delivers results in under 30 minutes with high accuracy and low cost, promising to revolutionize malaria diagnosis.
Researchers found that sertraline, a common antidepressant, accumulates in yeast cells and triggers membrane curvature, suggesting a potential alternative mechanism for depression treatment. The study supports the idea that depression is linked to brain-derived neurotrophic factor (BDNF) secretions, not just serotonin.
Researchers create iPhage particles that penetrate cells using penetratin, targeting specific organelles like mitochondria and ribosomes. They discover a peptide ligand that disrupts ribosomal function, killing cancer cells and reducing cell survival in malignant and non-malignant cells.
Scientists at the University of Liverpool have resolved the debate on the mechanisms involved in human cell shut-down during division, finding that receptors can transport nutrients but are temporarily blocked. This discovery may lead to future studies on manipulating this process to prevent harmful infections.
Researchers have identified a protein on the surface of dendritic cells that recognizes damaged cells, enabling the development of more specific and effective vaccines. This discovery could lead to vaccines that are 100-1000 times less in amount and have fewer side effects.
Researchers embed artificial membranes with billions of nanoantennas to study cell signaling patterns and molecular interactions. The technique boosts fluorescent signals, enabling tracing of individual proteins and enhancing biomolecule imaging.
Researchers have developed a breast implant with a 'bed-of-nails' surface at the nanoscale that reduces cancer cell growth and promotes healthy endothelial breast cells. The implant's unique surface features deter cancerous cells from dwelling and thriving, offering a promising alternative to traditional treatments.
A study published in Molecular Cell found that more than 30% of PDZ domains interact with various membrane lipids, controlling their cellular location and interaction with other protein partners.
Scientists at NIST and NIH discovered that inhaled anesthetics may alter the organization of fat molecules in a cell's outer membrane, affecting nerve cell signaling. This finding opens up a new line of inquiry into the long-standing question of how anesthesia works.
Scientists have determined the molecular 3D structure of a protein in blood platelets and a receptor that controls blood clot formation. This discovery helps understand the body's response to superbugs and potentially leads to new treatments.
Researchers from Clemson University have developed a method to create temporary holes in the membranes of live cells using a standard inkjet printer. This allows them to introduce molecules inside the cells that wouldn't otherwise fit, enabling studies on cell mechanics and responses to mechanical forces.
Muscle cells have efficient systems to seal holes in their plasma membranes. Researchers at KIT and Heidelberg University observed membrane repair in real-time using a novel imaging method. They found that membrane vesicles form a repair patch, which is sealed off from the extracellular environment.
A recent study suggests that restoring normal function to the mutant gene product responsible for cystic fibrosis requires correcting two distinct structural defects. This finding could lead to more effective therapeutic strategies for CF in the future.
Researchers have discovered that a bacterial photoresponsive protein can resist the adhesion of mammalian cells, opening up new possibilities for biosensor applications and surface modification in regenerative medicine. This finding provides a novel non-fouling substance that distinguishes it from other anti-fouling substances.
Scientists have found that the unfolded end of a protein, ColN-T, can still kill E. coli-like bacteria even after its toxic folded portion is removed. This discovery may lead to new, targeted ways to kill antibiotic-resistant microbes.
Researchers at the Stowers Institute have discovered a new mechanism controlling cell polarity in yeast. An enzyme called flippase flips phospholipids to create a polarized membrane, with all molecules involved found in both yeast and mammalian cells. This discovery opens up avenues for studying human diseases.
Cell biologists have identified key steps in how small molecules alter a cell's skeletal shape and drive cell movement. By manipulating the cell membrane, researchers created ruffles that helped pull cells across surfaces, a process previously difficult to recreate.
Researchers found that fat-derived stem cells thrive on stiff surfaces and form myotubes when matured, a crucial step in muscle development. These cells may offer new therapeutic possibilities for muscular dystrophy patients.
Researchers at University of Bristol have successfully mapped the molecular gateway across cellular membranes, revealing the mechanism responsible for protein secretion. The study, published in Cell Reports, provides a major breakthrough in cell biology, shedding light on how proteins are transported across membranes.
Researchers at the University of California, San Diego, have successfully created self-assembling cell membranes using a simple metal catalyst. This breakthrough could be a crucial step in making artificial life forms from scratch and understanding the origins of life on Earth.
Researchers at UC San Diego School of Medicine have created new fast-acting fluorescent dyes that optically highlight electrical activity in neuronal membranes. This breakthrough addresses a long-standing challenge in neuroscientists' ability to accurately measure and visualize small voltage changes between neurons.
Biofilms expand by swelling and then spreading due to the force generated by the extracellular matrix (ECM). The ECM increases osmotic pressure within the biofilm, causing it to absorb water from its surroundings and swell. This process allows the biofilm to grow and spread horizontally.
Researchers at UCSF have found that neutrophils use mechanical force to transmit tension across their membrane, restricting activity to the leading edge and enabling them to attack invaders. This discovery could lead to new therapies for conditions such as spinal cord injury and cancer.
Researchers discovered a new bacterial growth process that occurs at a single end or pole of the cell, which could lead to new antibacterial strategies. The study found that this polar growth process is broadly distributed among many different bacterial taxa.
Researchers have identified Ric-8 as a chaperone that facilitates the transport of G proteins to the cell membrane. Without Ric-8, G proteins are destroyed and their biological processes are disrupted. Understanding the role of Ric-8 in G protein function may lead to more effective treatments for various diseases.
Vitamin E helps repair tears in plasma membranes that protect cells from outside forces. Daily consumption of vitamin E is crucial to maintain healthy muscles and prevent conditions like muscular dystrophy and diabetes.