Articles tagged with Mitochondria
A genomic study uncovers germline ARID1B and mitochondrial variants that may drive pediatric chordoma genesis, a rare and aggressive bone tumor. The study found aberrant indels and haywire mitochondria in 22% of pediatric chordoma samples.
Researchers found that mitochondrial GRIM19 loss induces liver fibrosis through NLRP3/IL33 activation via reactive oxygen species/NF-кB signaling. This mechanism may provide potential therapeutic approaches for preventing early-stage liver fibrosis.
A head-mounted device generating an ultra-low frequency magnetic field has improved symptoms of four male patients with major depressive disorder. The study suggests that future trials may offer a safe and non-invasive way to treat depression.
Researchers at Karolinska Institutet have discovered a new class of drugs that block mitochondrial function and reverse diet-induced obesity, fatty liver, and diabetes in mice. The treatment increased fat metabolism, leading to drastic weight loss and restored glucose tolerance.
Researchers at Max Planck Institute discover that liver mitochondria adapt to food presence via nerve cells, leading to improved insulin sensitivity. This finding could pave the way for new type 2 diabetes treatments.
In nerve cells, insulin facilitates the elimination of defective mitochondria when energy is available. However, during energy scarcity or disrupted insulin signaling, mitochondrial recycling is reduced, allowing potentially damaged power plants to continue operating. This process affects ageing processes and neurological diseases.
Researchers identify mitochondrial priming as a key driver of multi-drug resistance in relapsed acute myeloid leukemia. A new technique called dynamic BH3 profiling reveals anti-cancer drugs capable of overcoming resistance.
A study by UNC researchers found that a metabolic enzyme called Acetyl-CoA Carboxylase (ACC) causes T cells to store fat rather than burning it for energy in solid tumors. Inhibiting ACC expression allowed T cells to persist better in tumors, leading to potential breakthroughs in immunotherapies like CAR T-cell therapies.
Cells use autophagy as a recycling system to transport and break down damaged organelles, including mitochondria. A recent study reveals the molecular details of how an enzyme called TBK1 participates in mitophagy, a disease-relevant process linked to Parkinson's disease.
Researchers created novel gene editing enzymes with improved precision, reducing off-target RNA edits by over 99%. The technology has potential applications in treating mitochondrial genetic diseases and may lead to transformative treatments within the next five years.
A recent study by Swansea University analyzed the link between digit ratio and oxygen consumption in professional football players. The research found that athletes with longer ring digits relative to their index fingers had more efficient oxygen metabolism, reaching high maximal oxygen consumption during a cardiopulmonary test.
Researchers developed a high-speed modulation system combining digital display with super-resolution imaging, significantly improving lateral and axial resolution. This enables detailed study of subcellular structures in animal cells and plant ultrastructures, paving the way for future biological discoveries.
Researchers identified mechanisms that cause ponatinib to harm the heart and found a promising treatment that could reverse this process. The treatment protects heart cells without diminishing the tumor-fighting efficacy of the drug.
Scientists discovered a novel mechanism for removing mtDNA from mitochondria, which can initiate an immune response promoting inflammation. The discovery reveals new targets for therapeutics to disrupt the inflammatory pathway and mitigate inflammation during aging and diseases.
Indiana University researchers have found that nicotinamide nucleotide adenylyl transferase 2 (NMNAT2) plays a critical role in protecting the brain from aging and neurodegenerative diseases. The enzyme provides energy to axons, enabling them to carry out nerve impulses and maintain healthy function.
A study published in Nature Metabolism reveals that obesity is associated with the fragmentation of mitochondria in fat cells, leading to reduced energy burning and weight gain. Researchers identified a single gene responsible for this process and found that deleting it protected mice from diet-induced weight gain.
Researchers develop technology that alleviates retinal pathologies by targeting mitochondrial chaperone TRAP1, which is implicated in the breakdown of blood-retinal barrier and pathological neovascularization. This treatment approach holds great promise for revolutionizing the treatment landscape for ischemic retinopathy.
A new task force launched by C-Path aims to accelerate drug development for mitochondrial and inherited metabolic diseases. The task force will leverage C-Path's expertise in data management standards, biomarkers, and regulatory science to generate solutions and contribute to regulatory decision-making.
A team of scientists identified VAP as a molecular anchor that stabilizes mitochondria near synapses in dendrites, supporting memory formation and plasticity. The discovery links VAP to ALS-linked protein and suggests that mitochondrial stabilization is critical for neuronal function and health.
A newly identified genetic mutation in a small protein provides significant protection against Parkinson's disease. The variant, SHLP2, is found primarily in people of European descent and reduces the risk of Parkinson's by twofold.
A study published in PNAS reveals that HKDC1 protein plays a crucial role in maintaining mitochondrial and lysosomal function, thereby preventing cellular senescence. The researchers found that HKDC1 helps regulate the removal of damaged mitochondria through mitophagy and facilitates lysosomal repair.
A new study found that multiple members of the oxymonad lineage have lost their mitochondria, a crucial energy-producing organelle, approximately 100 million years ago. This discovery suggests that it's possible for eukaryotic organisms to thrive without mitochondria, paving the way for further research on their evolution and adaptations.
Researchers found that genetic variations in the Eif4enif1 gene lead to premature ovarian insufficiency and reduced egg production. The study suggests that restoring proper mitochondrial behavior could improve fertility in human patients with similar conditions.
Researchers discovered that Osteopontin induces mitochondrial biogenesis in deadherent breast tumor cells, which aids metastatic success. The study suggests a possible mechanism and targets for treating cancer metastasis by increasing ATP levels and mitochondrial mass.
A recent study found that transient inflammatory pain causes persistent mitochondrial and metabolic disturbances in sensory neurons, leading to failure in pain resolution. Targeting the cellular redox balance prevents and treats chronic inflammatory pain in rodents.
Dr. Vidhya Rangaraju has received a $1.2 million grant from the Chan Zuckerberg Initiative to investigate disrupted energy supply in neurons causing cognitive decline in ALS. Her lab will use super-resolution microscopy and biosensors to study metabolic disruptions in ALS.
Researchers identify protein SLC25A39 as a double-functioned nutrient sensor and transporter for mitochondria, regulating glutathione levels to prevent oxidative stress. The discovery sheds light on the critical role of glutathione in maintaining mitochondrial function.
Researchers developed a drug that triggers the destruction of damaged mitochondria, restored motor function in aging mice with ALS-like symptoms. The results show promising promise for treating neurodegenerative diseases like Parkinson's and Alzheimer's disease.
Researchers found that SARS-CoV-2 alters mitochondria on a genetic level, leading to widespread 'energy outages' throughout the body and its major organs. This affects the heart, brain, and lungs, contributing to long COVID symptoms.
Researchers developed three new two-photon probes that can visualize organelles in cells, enabling better understanding of cellular functions and tissue imaging. The probes are designed to detect pH levels, viscosity, and ionic species, providing more specific insights into cell viability and treatment responses.
Researchers discovered that fine-tuning mitochondrial energy production reduces melanoma tumor growth and enhances immune response in mice. The study reveals that manipulating mitochondrial electron transport increases expression of immune genes and makes tumor cells more visible to killer T cells.
Researchers found that mature sperm carry only 100 organelles with mitochondria but no intact mtDNA. This discovery has important implications for human fertility and germ cell therapy, potentially limiting the risk of accumulating harmful mtDNA mutations.
A new Northwestern Medicine study reveals that a dysfunction in the neuron's synapses leads to deficits in dopamine and precedes neurodegeneration in Parkinson's disease. The findings suggest targeting dysfunctional synapses before neurons degenerate may represent a better therapeutic strategy.
A novel mitochondrial enzyme was identified as key to reproductive aging, increasing oocyte clustering with age and affecting fertility
Researchers have found that the protein Musashi-2 plays a crucial role in regulating type 2a muscle fiber mass and metabolism. The study reveals that Msi2 knockout mice exhibit reduced muscle mass, decreased myoglobin and mitochondria levels, and impaired sugar metabolism.
Researchers discover compound Urolithin A restores mitochondrial function in hematopoietic stem cells, rejuvenating blood reconstitution capability and improving immune system function. The study shows promising results in aging mice, paving the way for potential interventions targeting age-related health conditions.
Researchers have found that mouse stem cells mimic their parent animals' cold resistance, generating energy differently at low temperatures. This discovery opens up new avenues for studying organ preservation and human hibernation using in vitro models.
Researchers at West Virginia University are tracing the cause of diabetic heart disease using diabetic animal models to examine mitochondrial function. They hope to understand how faulty protein import affects the mitochondria and explore potential treatments to improve energy production and reduce cardiovascular risk.
A study by Children's Hospital of Philadelphia found that COVID-19 affects mitochondrial function in multiple organs beyond the lungs, leading to long-term damage. Mitochondrial gene expression was suppressed in the heart, kidneys, and liver, while recovering in the lungs.
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.
Scientists identified a process by which enzymes help prevent heart damage in chemotherapy patients. Enzymes normally found in mitochondria move to the nucleus, keeping cells alive. This discovery suggests new methods for testing individual patient responses and potentially preventing heart damage from chemotherapy.
Researchers at Tokyo Metropolitan University have discovered that 5-aminolevulinic acid can selectively boost Complex II and IV to counteract Complex I deficiency, a common cause of mitochondrial disorders. This finding offers new hope for the development of treatments for debilitating conditions such as MELAS syndrome.
Researchers at University of California San Diego find that impaired mitochondria, not inflammation, drive Gulf War illness symptoms, potentially leading to new treatment strategies. The study's findings have implications for other health conditions marked by increased inflammation.
Researchers found that ahiflower oil supplementation can recover mitochondrial respiration rates in honey bees exposed to imidacloprid, a common neonicotinoid pesticide. This study suggests the potential for food supplements to decrease honey bee mortalities caused by pesticides.
Kabbani's research aims to identify mitochondrial responses to plant-derived compounds and create an iterative dataset for biomarker discovery and drug design. The study is part of a larger effort to understand the role of mitochondrial regulation in human diseases and develop new treatments.
A novel study found that honokiol promotes healing of rotator cuff injury and may be an effective treatment for humans. The study suggests that SIRT3 activation plays a protective role in alleviating aging-induced fibrocartilage degeneration and promoting rotator cuff healing.
Researchers found a link between bipolar disorder and potentially pathogenic mosaic mutations in genes associated with developmental disorders and autism spectrum disorder. Mosaic variants were also discovered in mitochondrial tRNA genes of patients with BD, suggesting a compromised contribution to the disease's molecular mechanisms.
The nucleus is metabolically active and uses antioxidant enzymes to repair DNA damage. Cells relocate mitochondrial machinery to the nucleus in response to DNA damage, highlighting a paradigm shift in cellular biology.
Researchers discovered that melanoma skin cancer cells adopt an efficient style of movement called rounded-amoeboid migration, which requires less energy than traditional cell movement. This process involves reshaping mitochondria to operate in a low-power mode, allowing cells to survive in stressful environments.
Researchers have identified a new group of mitochondrial viruses confined to arbuscular mycorrhizal fungi Glomeromycotina, which may represent an ancestral lineage of mitoviruses. These large duamitoviruses possess distinct characteristics and are globally distributed in ecological niches occupied by glomeromycotinian fungi.
Researchers at the Lewis Katz School of Medicine found that calcium sensor MICU1 regulates mitochondrial ultrastructure, governing inner and outer mitochondrial membrane structure. This discovery provides a framework for understanding cellular energetics and cell death, with implications for diseases such as cardiovascular disease.
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.
The World Mitochondria Society will host Targeting Mitochondria 2023, a conference featuring sessions on innovations such as mitochondria in space and exosome-based mitochondrial medicine. The event aims to take clinical translation of mitochondrial therapies to a new level.
This study examined the effects of deferoxamine and ferrostatin-1 on salivary gland dysfunction in ovariectomized rats. The researchers found that these compounds reduced inflammation, fibrosis, and improved salivary gland function, suggesting potential treatments for postmenopausal xerostomia.
A recent study published in Life Metabolism reveals that weight loss increases skeletal muscle mitochondrial energy efficiency in obese mice. This increase leads to reduced energy expenditure throughout the body, contributing to weight loss rebound.
A research team from Université Laval has identified a method to save corneal cells from death using healthy mitochondria, reducing mortality rates from 60% to 10%. This approach demonstrates high therapeutic potential for mitochondrial injection, which could maintain vision without transplantation if diagnosed at an early stage.
Researchers have developed a new technology to sequence individual mitochondria in single cells, allowing for unbiased analysis of full-length mtDNA. This has revealed complex patterns of pathogenic mtDNA mutations and the potential risks of off-target mutations in genetic editing strategies.
A Virginia Tech researcher has identified a key factor in DiGeorge syndrome, a genetic disorder affecting brain development. The study finds that mitochondrial deficits can be targeted with dietary supplements or more precisely-targeted drugs to support final connections during brain development.
Researchers at Sogang University and Harbin Institute of Technology developed artificial mitochondria and chloroplasts to create sustainable cells. These organelles can produce energy through sunlight or glucose breakdown.
Researchers at Cold Spring Harbor Laboratory have created a method to safely synthesize the cancer-fighting molecule JA, which has shown promise in treating triple-negative breast cancer. The team found that JA inhibits metabolic activity in cancer cells, starves them of energy and building blocks, leading to cell death.