Articles tagged with Phospholipids
Researchers have identified the mechanism by which a molecule within cells tunes the sensitivity of the eyes to light, offering a potential treatment for eye diseases. The study found that a phospholipid called PIP2 inhibits the activation of ion channels in retinal cells, regulating light sensitivity.
A team in Japan has created a propellor-shaped lipid mimic molecule that forms stable 'islands' in a 'sea' of lipid, achieving phase separation and high thermal stability. This new design principle can be used to engineer domains in artificial membrane materials for various applications.
Researchers redesigned a key component of lipid nanoparticles to steer particles toward lymph nodes, reducing off-target delivery. This advancement could make mRNA vaccines more efficient, potentially achieving strong immune protection at lower doses.
The review highlights the critical roles of phospholipids in regulating immune cell migration, differentiation, and survival, as well as their regulatory effects on inflammation. Dysregulated phospholipid metabolism is linked to various diseases, including autoimmune disorders, cardiovascular disease, and cancer.
Researchers at the University of Graz and the University of California, San Diego have developed a novel method to determine omega positions of lipids in complex biological samples. This breakthrough enables the study of biological mechanisms in unprecedented detail, particularly for inflammation-related diseases.
Scientists from UC San Diego develop an artificial cell membrane that can remodel itself through metabolic activity, shedding light on how life may have emerged on prebiotic Earth. This breakthrough could lead to advancements in drug delivery, biomanufacturing and environmental remediation.
Researchers have uncovered the molecular mechanism of ATG-9 in regulating lysosome integrity by modulating phospholipid distribution. This study suggests that reduced ATG-9 scramblase activity facilitates lysosome biogenesis and repair, highlighting ATG-9 as a promising therapeutic target for diseases related to lysosomal dysfunction.
Researchers discovered that mammalian membranes have drastically different phospholipid abundances between their two leaflets, contradicting a major assumption of cell biology. The asymmetry is enabled by cholesterol's unique properties, which act as a buffer to redistribute between the leaflets and maintain robust barriers.
A new class of zwitterionic phospholipids, DOPE-Cx, enhances the functional delivery of mRNA via lipid nanoparticles, overcoming endosomal escape and improving mRNA expression. This breakthrough paves the way for advanced therapeutic applications, including mRNA vaccines, cancer treatment, and protein replacement therapy.
Scientists at the University of South Australia have developed a phospholipid complex to improve cannabidiol's effectiveness in treating epilepsy, multiple sclerosis, and other neurodegenerative diseases. The new formula increases cannabidiol's solubility by up to six times and improves its absorption in the gastrointestinal tract.
Researchers found that olpasiran significantly lowers lipoprotein(a) levels by over 95% and reduces oxidized phospholipids, which promote atherosclerosis. The study also showed no significant effects on inflammatory markers.
Researchers are exploring the effects of herring roe omega-3 on exercise metabolism and recovery in active females. The study aims to investigate its benefits for supporting a healthy lifestyle across all ages, including muscle function, metabolism, and cognitive health.
Scientists at Tel Aviv University successfully transport mRNA-based drugs to the immune system of small and large intestines without passing through the liver. The breakthrough could enable treatments for inflammatory diseases such as Crohn's and colitis.
A new study found that HDL particle quality declines over time in women after menopause, increasing risk of episodic memory loss. Women with smaller, more functional HDL particles are less likely to experience cognitive decline.
A new study compares ancient and modern whole milk powders, revealing surprisingly similar compositions despite advancements in dairy production. The analysis of a 100-year-old Antarctic sample shows that key nutrients and protein structures remain largely unchanged.
Scientists discovered a plausible pathway for the formation of protocells, suggesting that phosphorylation may have occurred earlier than expected. This finding helps understand how early evolution took place and sheds light on the origins of life.
Researchers have discovered that a rare type of lipid, with two polyunsaturated fatty acyl tails, promotes ferroptosis, a form of cell death. This finding could lead to new treatments for neurodegenerative diseases and induce cancer cell death.
Researchers at Weill Cornell Medicine found lipid-signaling microdomains in condensates, previously thought to function primarily in cell membranes. These discoveries may lead to a better understanding of neurodegenerative diseases like ALS and Alzheimer's disease.
A recent study published in the Journal of Cell Biology has made significant progress in understanding autophagy and lipid recycling. Researchers used yeast as a model organism to identify key players in the process, including Atg15, Pep4, and Prb1, and demonstrated that Pep4 and Prb1 activate Atg15 to break down phospholipid bilayers.
Researchers develop novel measurement technique to analyze desorption of molecules from microbubbles under ultrasound irradiation. The study reveals that significant amounts of adsorbed molecules are released into surrounding media, and the process depends on bubble size.
Researchers at Tokyo Medical and Dental University found that mutant α-synuclein protein propagates through the brain's lymphatic system in its monomeric state before aggregating, shedding light on Parkinson's disease progression. The study suggests targeting early events may limit disease progression.
Researchers from Tokyo Medical and Dental University discovered a new mechanism that stimulates brain-autonomous neural repair after ischemic stroke by secreting lipids. The mechanism involves PLA2G2E, which increases dihomo-γ-linolenic acid (DGLA) levels, promoting inflammation reduction and neuronal repair.
Researchers found that high-fat diets increase levels of gut-derived bacterial toxins and systemic inflammation, promoting atherosclerosis. The study suggests targeting interventions for individuals at risk of developing heart disease.
Scientists have developed a new method to deliver genetic information to stem cells using nanoparticles coated with a specific polymer, enabling more efficient control over cellular differentiation. This innovation has the potential to improve the efficiency and effectiveness of regenerative medicine treatments.
Researchers discovered that gut bacteria's F-pili are stronger in harsh conditions, enabling efficient gene transfer and biofilm formation. The findings highlight the challenge of combating antibiotic resistance and suggest exploiting similar molecular properties for precise drug delivery.
A study by IMBA researchers links muscle degeneration to a deficiency in the enzyme PCYT2, essential for lipid synthesis. PCYT2 depletion affects mitochondrial function and muscle energetics, highlighting the importance of lipid balance in muscle health.
Researchers discovered that lipid deposition on medical implant surfaces can signal to the immune system whether to attack or ignore the implant. This knowledge could help develop biomaterials that deflect host immune aggression, reducing malfunction rates for devices like pacemakers and surgical mesh.
A study by researchers at TUM found that gut bacteria play a crucial role in liver regeneration. The microbiome produces short-chain fatty acids, which are essential for liver cell growth and division. In mice treated with antibiotics, liver regeneration was delayed or not possible, but a
Research suggests that oleic acid in olive oil has antioxidant properties, inhibiting the expression of proteins associated with cholesterol transport, and reducing atherosclerosis. Additionally, oleic acid is recognized as an anti-cancer molecule, which also displays hypocholesterolaemic effects and may influence epigenetic mechanisms.
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.
Seipin deficiency in Berardinelli-Seip congenital lipodystrophy type 2 leads to loss of subcutaneous fat tissue. PC deficiency suppresses embryonic lethality but exacerbates lipid droplet defect, suggesting distinct mechanisms for seipin's role in lipid homeostasis and physiology.
Researchers at NC State University discovered that a maize gene called HPC1 helps plants adapt to high altitudes and cold temperatures. The gene originated from teosinte mexicana and has been retained in modern-day corn, allowing it to thrive in challenging environments.
Researchers found phosphatidylinositol bisphosphate (PIP2) essential for epithelial cell-cell adhesion and maintaining cellular identity. PIP2 regulates epithelial properties by recruiting Par3 to the plasma membrane, facilitating the formation of adherens junctions and preventing epithelial-mesenchymal transformation.
Researchers have identified a new mechanism of action for extracellular vesicles in the development and progression of lymphomas. sPLA2 secreted by tumor-associated macrophages degrades EV-derived phospholipids, enhancing EV function and inducing vital phenomena. This discovery may lead to new drug targets for cancer treatment.
Researchers developed a computer model of lipoprotein-associated phospholipase A2, shedding light on its mechanism and substrate specificity. This knowledge creates opportunities for therapeutic interventions against cardiovascular disease.
Researchers found that a Western diet high in fat, cholesterol, and calories led to increased inflammation in mice. Targeting the mucus interface between gut bacteria and small intestine cells with peptide mimetics may prevent systemic inflammation, suggests a new UCLA study.
Researchers found prebiotic ethanolamine in a molecular cloud near the center of our galaxy, suggesting it may have formed in space and was incorporated into meteorites and planetesimals. This discovery supports the idea that the molecule could have contributed to the assembly and evolution of primitive cell membranes on early Earth.
A single archaeal enzyme can produce a wide range of natural and unnatural cardiolipins, as well as other phospholipids. This promiscuous enzyme has potential biotechnological applications for the production of self-designed membranes.
Scientists discovered that ancient protocells, which emerged around 3.8 billion years ago, can form bubble-like compartments without added energy or molecular machines. These spontaneous compartments can encapsulate small molecules and divide into smaller 'daughter' bubbles, similar to simple cell division.
Researchers at Princeton University have identified a new protein involved in the assembly and maintenance of the outer membrane of Gram-negative bacteria. The discovery sheds light on the complex process of transporting phospholipids between membranes, a critical step in preventing bacterial infection.
The study reveals that Atg9 has phospholipid-translocation activity, which brings about autophagosome membrane expansion. This discovery sheds light on the molecular mechanisms of autophagosome formation and holds promise for accelerating research into treating various diseases through artificial control of autophagy.
A research group at Martin Luther University Halle-Wittenberg has developed a method to produce controlled-quality phospholipid-based substances that can reduce inflammation without triggering an immune response. These natural compounds have shown promise in treating conditions such as arthritis, psoriasis, and infarcts.
Researchers embed dopamine receptors in phospholipid membrane to study their structure and behavior. The findings could lead to the development of more precise drugs for treating conditions like Parkinson's disease and addiction.
A recent study by the University of Birmingham has identified a key pathway involved in protecting bacteria against antibiotics. The researchers discovered that phospholipids are transported towards the outer membrane through a series of proteins, which could lead to the development of new antibiotic treatments.
Researchers have identified a new type of T cell called phospholipid-reactive T cells that recognize phospholipids, which can stimulate them or prevent glycolipids from reaching the surface of cells. This balance is crucial for maintaining homeostasis in the immune system.
Researchers used mutant bacteria to study how changes in membrane proteins impact cellular processes, finding that phospholipid environment can control protein structure and function. This discovery provides a new way to understand cellular regulation and integration of chemical reactions.
Researchers found that a Rab protein boosts PIP2 production, enabling HIV-1 assembly. Immune cells lacking this protein show impaired viral replication.
Researchers at the University of California, San Diego, have developed a new process for self-driving phospholipid membrane assembly, similar to those found in living cells. This non-enzymatic technique can be used for artificial cell studies and potentially for drug delivery packets.
The lipid molecules of membranes, also known as phospholipids, form a bilayer with heads pointing outwards and fatty acid chains hanging inwards. Scientists have discovered enzymes that transport phospholipids across membranes, allowing for the alignment of biomembranes during cell division.
Scientists have described a chemical interaction vital to blood clotting in atomic detail, resolving a decades-long mystery. The interaction between a clotting factor and cell membrane was first observed using nanodiscs and advanced modeling techniques.
Researchers from the University of Granada and CSIC have made significant progress in understanding lipid membranes used in drug products and gene therapies. The study discovered how certain membranes can invert their surface electrostatic charge, allowing them to function as positive charges in specific circumstances.
Rapid turnover of lipid membranes enables phytoplankton to adapt to phosphorus scarcity, potentially supporting further growth when conditions improve. The process occurs within 24 hours and is a physiological response by individual cells.
Phytoplankton in tropical and subtropical seas use non-phosphorus containing 'substitute lipids' that utilize sulfur instead of phosphorus, allowing them to continue growing under phosphorus stress conditions. This unique strategy has implications for the future structure and biodiversity of Hawaiian marine ecosystems.
Researchers at the University of Illinois have discovered a new way to stimulate patchiness in phospholipid membranes using charged nanoparticles. This phenomenon allows the membrane to coexist in two phases - solid and liquid - depending on what binds to it, offering a new mechanism for modulating stiffness in membranes.
Researchers cast doubt on ABCA1's role in producing good cholesterol by studying cells from Tangier disease patients and knock-out mice. The findings suggest that ABCA1 does not code for the scramblase enzyme involved in phospholipid transport.
Researchers found that a disproportionate ratio of phosphatidylcholine to phosphatidylethanolamine in cell membranes undermines membrane integrity and influences progression to nonalcoholic steatohepatitis. Maintaining a healthy ratio may provide new approaches for managing the condition.
Researchers at Virginia Tech create sub-micron fibers from natural compounds, exhibiting porous nonwoven structure. Potential applications include drug delivery and patches for horses, showcasing the synergy of electrospinning and self-organizing molecules.
Researchers discovered that omega-3 fatty acids are not linked to depression as previously thought, but rather increased arachidonic acid levels in the brain may be responsible. Omega-6 fatty acid intake could also play a role in controlling depression.
Researchers found that fasting reduces phospholipid levels in the heart by up to 40% after 12 hours, allowing mitochondria to become more energy-efficient. After feeding resumes, phospholipid levels return to normal, but triglyceride levels remain elevated, hinting at a memory of deprivation.
Researchers found that an egg phospholipid interferes with cholesterol absorption in the intestine, lowering its uptake by the intestine. This may explain why some studies have found no association between egg intake and blood cholesterol levels.