Articles tagged with Mitochondria
Researchers discovered that cancer cells have a defensive mechanism to repair DNA damage and survive physical stress by activating mitochondria to pump in extra ATP. This finding could lead to new therapeutic approaches by targeting the mechanism's underlying scaffold.
Researchers discovered a way to boost T cells' ability to fight cancer by rewiring their energy metabolism. By blocking Ant2 protein, they created a state of heightened readiness and potency in T cells, leading to greater stamina, faster replication, and sharper targeting of cancerous threats.
Phytochemicals have shown promising effects against leishmaniasis, disrupting mitochondrial function and inducing apoptosis in Leishmania parasites. The study highlights the potential of these compounds to modulate host immune responses and target parasite enzymes.
Researchers at Vanderbilt University have generated a high-resolution metabolic map of how cells process glucose, revealing a hidden world where organelles and molecular complexes collaborate. The study provides insights into an organizational framework that can be used to study disruptions in diseases like diabetes, obesity, and cancer.
Researchers developed a new imaging approach combining two-photon microscopy and advanced algorithms to improve resolution and reduce noise. This allowed them to clearly see details smaller than 250 nanometers, enabling real-time observations of mitochondrial behavior in live animals.
An international team has uncovered a new mechanism by which mitochondria and peroxisomes work together to defend against oxidative stress, maintaining cellular health. This discovery challenges the long-standing idea that cellular defense is confined within individual compartments.
Researchers have discovered an oral drug called MA-5 that can improve both heart and muscle problems in patients with Barth syndrome, a rare genetic disorder. The drug boosts cellular energy production by up to 50% and protects cells from oxidative stress-induced death, addressing the underlying cause of the disease.
Mitochondria are responsible for producing cellular energy and maintaining homeostasis, but dysfunction has been implicated in neurodegenerative disorders, cardiovascular diseases, metabolic disorders, cancer, and aging. Targeted therapies are being explored to restore mitochondrial function and reduce oxidative stress.
Researchers aim to replenish the heart's energy reserves by increasing mitochondrial biogenesis, potentially leading to improved recovery rates and longer lives after a heart attack. The project combines synthetic biology tools with animal models and human heart tissue testing.
Researchers have successfully edited harmful mitochondrial DNA mutations in liver and skin cells using a genetic tool called a base editor. The study, published in PLOS Biology, offers promising results for treating mitochondrial diseases and aging-related conditions.
Researchers discovered that aggressive melanomas overactivate mitochondrial pathways, which can be targeted by antibiotics and energy-production inhibitors. The findings suggest a new therapeutic vulnerability in melanoma cells, highlighting the safety and specificity of these treatment approaches.
A Rice University-led research team is working on a new approach to treat acute myeloid leukemia (AML) by targeting the energy-producing mitochondria of cancer cells. By disrupting mitochondrial function, the researchers aim to selectively kill AML cells while leaving healthy blood cells unharmed.
Researchers found that accumulated mitochondrial DNA mutations do not impair respiratory function in mice, contradicting the 'mitochondrial theory of aging'. This study suggests a reevaluation of the relationship between mtDNA mutations and premature aging symptoms.
Researchers have uncovered the mechanism by which ATP enters the endoplasmic reticulum, a process crucial for cellular function. The study reveals SLC35B1 as the key transporter protein, providing a promising target for therapeutic intervention.
Researchers found that aging impairs CAR-T cell function and antitumor activity due to lower NAD levels. Rejuvenating aged cells with NAD-boosting compounds improves their effectiveness.
Researchers at Thomas Jefferson University found that VDAC2, a mitochondrial protein, can make liver cancer cells more vulnerable to existing treatments targeting BAK-dependent cell death. The study suggests that combining pre-clinical drugs targeting BAK could shrink tumors in mice with high levels of VDAC2.
Researchers at Stockholm University and UK DRI have identified a common disease signature across all ALS-causing mutations in motor neurons, revealing early mitochondrial dysfunction. This discovery opens up new avenues for early treatment methods, targeting the energy factories of nerve cells before other signs of disease appear.
Estrogen-related receptors play a crucial role in regulating muscle cell metabolism and energy production. Researchers discovered that these receptors can increase mitochondrial numbers and enhance energetic output when muscles need more energy, making them a promising therapeutic target for metabolic disorders.
Researchers used generative AI to design diverse mitochondrial targeting sequences, achieving a 50-100% success rate in yeast, plant cells, and mammalian cells. The AI-generated sequences showed improved targeting abilities compared to existing ones, with potential applications in metabolic engineering and therapeutics.
Researchers at Pennington Biomedical found that mitochondrial fragmentation can bypass defects in mitophagy to sustain skeletal muscle quality control in patients with Type 2 Diabetes. This adaptation helps maintain mitochondrial function despite impaired mitophagy.
Researchers discovered compromised NAD+ metabolism in WS cells and found that boosting NAD+ levels using nicotinamide riboside decreased senescence in both stem cells and primary fibroblasts. The study suggests targeting NAD+ metabolism for age-related and genetic diseases.
A novel mechanism linking fetal anemia to disrupted intracellular iron distribution has been identified due to impaired mitochondrial protein synthesis. Mitochondrial tRNA modification enzyme Mto1 plays a crucial role in efficient protein synthesis and maintaining proper iron homeostasis.
Scientists have discovered a mechanism that protects and repairs mitochondrial DNA, preventing diseases like Parkinson's and Alzheimer's. A protein complex known as retromer and lysosomes eliminate damaged genetic material, maintaining cellular health.
Researchers developed a stem cell-based system to mass-produce high-quality human mitochondria, overcoming a bottleneck in mitochondrial transplantation. The 'mito-condition' culture medium significantly enhances energy output and facilitates cartilage regeneration in osteoarthritis models.
Compound K exhibits anti-aging properties by enhancing skin barrier function, preventing photoaging, and regulating autophagy. It also protects against mitochondrial dysfunction and promotes tight junctions between keratinocytes.
Senescent cells can cause chronic inflammation through the secretion of inflammatory molecules, leading to age-related diseases. The study found that a cellular circuit controlling DNA repair can suppress this inflammation, offering potential ways to promote healthier aging.
Researchers discovered that Zika virus uses a tunneling strategy to spread in placental cells, hijacking mitochondria to augment its propagation and survival. The study found that the formation of tiny tunnels is driven exclusively by a Zika protein called NS1, which triggers tunnel formation in uninfected cells.
A retrospective natural history study of 30 patients with single large-scale mitochondrial DNA deletion syndromes (SLSMD) reveals a broader clinical presentation than previously thought. The study identifies key molecular details, including a recurrent deleted region in the MT-ND5 gene and elevated levels of biomarker GDF-15.
Researchers at Gladstone Institutes developed a drug called HypoxyStat that mimics the effects of breathing low oxygen, extending lifespan by over three times in mice with Leigh Syndrome. The drug reversed brain damage, muscle weakness, and other symptoms of the disease, even when given late in life.
Researchers discover mitochondrial transfer between cancer cells and immune cells as a key immune evasion strategy. Cancer cells can reshape the tumor microenvironment to weaken tumor-infiltrating lymphocytes, and mitochondria play a significant role in this process.
A new Northwestern Medicine study reveals how metformin lowers glucose levels by targeting mitochondrial complex I in cells. The drug also improves COVID outcomes and reduces inflammation, suggesting that mitochondrial complex I inhibition may be a unifying mechanism behind its diverse effects.
A new study shows targeted delivery of energy-disrupting gene therapy using nanoparticles shrinks glioblastoma brain tumors and aggressive breast cancer tumors in mice. The technology, mLumiOpto, induces light-activated electrical currents inside cells to disrupt mitochondria, leading to programmed cell death and DNA damage.
Researchers found peculiar mitochondria-like symbionts in freshwater lakes, groundwater, and wastewater worldwide, revealing surprising metabolic capacities. They can respire oxygen in addition to nitrogen, impacting the nitrogen cycle and potentially producing greenhouse gases.
Low-cost sequencing technology has opened a flood of mitochondrial DNA data on lice and other insects, bolstering studies on insect species identification and developing insecticides. This genetic data also offers insights into the impact of evolution on neurodegenerative diseases and potential pest control methods.
The AAAS Annual Meeting will take place in-person in Boston from February 13-15. The event features a range of press events, including a Science Trends Media Briefing and a Press Lunch with Experts, offering opportunities for journalists to engage with science professionals and stay up-to-date on the latest news and trends.
Mitochondria regulate cell death and inflammation by releasing pro-inflammatory messenger substances, a process controlled by the NLRP3 sensor. This discovery could lead to new treatments for inflammatory diseases such as gout, type 2 diabetes, and severe COVID-19.
A new award at University of Utah Health recognizes the importance of a diverse scientific community. The Administrative Supplement to Recognize Excellence in Diversity, Equity, Inclusion, and Accessibility (DEIA) Mentorship award aims to enhance diversity, equity, inclusion, and accessibility in biomedical sciences.
Dr. Andreazza's work focuses on identifying biomarkers for personalized treatments in metabolic psychiatry, with breakthroughs in brain organoids and mitochondrial transplantation techniques. Her innovative approach aims to revolutionize treatment for both psychiatric and metabolic disorders.
Researchers at USC Dornsife discover that mifepristone increases mitophagy to the same extent as rapamycin, potentially extending lifespan. The study found that combining the two drugs does not offer additional benefits and slightly reduces lifespan, suggesting they act through the same biological pathway.
Scientists discovered a unique way in which yeast cells adapt to starvation by coating their mitochondria with massive molecular complexes called ribosomes. This adaptation has potential implications for cancer treatment as it may help overcome the challenges faced by cancer cells when they are starved of nutrients.
Parents who struggle with alcohol use disorders can pass along symptoms of early aging to their children, affecting them well into adulthood. These accelerated aging effects include high cholesterol, heart problems, arthritis, and early onset dementia.
A group of scientists discovered that the Black and white tegu lizard can raise its own body temperature during the reproductive season, even in a dark burrow. The study found that this phenomenon is due to the increased production of mitochondria and a protein called ANT, which generates heat.
A study from the University of California, Berkeley, shows that nematodes react to pathogenic bacteria by destroying mitochondria to protect against iron-stealing bacteria. This protective response suggests that humans may also respond to the smell of pathogens to prepare their gut for infection.
A recent study from China has found that Cordyceps sinensis can ameliorate idiopathic pulmonary fibrosis in mice by inhibiting mitochondrion-mediated oxidative stress. The fungus was shown to reduce pulmonary inflammation and collagen deposition, offering a promising alternative for patients suffering from this debilitating disease.
A new technique, METAPHOR, visualizes embryo metabolism to predict implantation success and full-term birth, increasing the probability of success in assisted reproduction processes.
A new study from Columbia University Irving Medical Center suggests that the brain's mitochondria play a fundamental part in translating feelings and experiences into physical changes. Researchers found that older adults with lower psychological stress had greater mitochondrial energy transformation machinery, linked to higher well-being.
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 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.
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.
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.
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.