Articles tagged with Autophagy
Researchers found that optimizing energy metabolism through autophagy can improve the immune system response in HIV-affected cells, providing a potential therapeutic approach. This metabolic optimization enables CD4 lymphocytes to better defend against HIV-1 by secreting IL-21, a key protein in defense against the virus.
Researchers at University of Illinois Chicago found a potential direct connection between neurodegenerative diseases, such as Alzheimer's disease, amyotrophic lateral sclerosis (ALS), glaucoma, and herpesvirus. The study suggests OPTN protein restricts HSV-1 virus spread in cells.
Researchers from Meiji University highlight autophagy's role in restoring zinc-iron balance in plants, mitigating symptoms of zinc deficiency and excess. Autophagy regulates intracellular zinc-iron homeostasis, adapting to environmental stress.
Researchers from Osaka University found a link between excessive autophagy and reduced sperm production, suggesting a potential mechanism for male infertility. The study suggests that Rubicon regulates autophagic degradation of GATA4, promoting Sertoli cell function.
Lipidated Atg8 has been found to exhibit membrane transforming activity, interacting with the membrane via two aromatic amino acids. This interaction promotes autophagosome formation by perturbing and transforming membranes.
A new study using expanded genetic code technologies uncovers the structural aspect of how one protein functions in lysosomes for intracellular clearance. The research reveals that the homophilic interaction between LAMP2 molecules is crucial for their function on the lysosome membrane.
A group of patients with neurological disease have been found to lack a critical cell process called autophagy. This discovery challenges the understanding that humans cannot survive if their cells completely fail to carry out autophagy, and may have important implications for research and therapies in neurodegeneration and cancer.
Scientists at Sanford Burnham Prebys have gained insight into the process of autophagy, where cells degrade and recycle cellular components. The study reveals that a chemical modification helps direct the transport of autophagosomes to cellular recycling plants, potentially leading to new targets for age-related diseases.
Researchers found that autophagy and the G2 checkpoint are interrelated processes in pancreatic cancer cells, helping them survive radiotherapy. Inhibiting the G2 checkpoint suppresses tumor growth, suggesting new tools to combat radiation-resistant PDAC cells.
Researchers have found that targeting the FK506-binding protein 51 (FKBP51) promotes autophagy and reduces toxic Huntingtin protein levels, potentially providing a new treatment option for Huntington's disease. This new mechanism avoids worrisome side effects associated with rapamycin.
A new study suggests that cooling breaks can improve autophagic function in older adults, potentially reducing cellular damage from extreme heat. Researchers found that visiting a cooling center reduced core body temperature and improved markers of autophagy in participants.
Researchers discover that autophagy preferentially degrades specific mRNA species, including housekeeping mRNAs, and those required for regulatory protein synthesis. This selective degradation process is linked to translation-dependent processes and plays a crucial role in gene regulation.
Researchers found that Staufen1 accumulates in brains of patients with neurodegenerative disorders, disrupting normal cellular function. Lowering Staufen1 levels may improve pathology and rid cells of stress granules, a key finding for potential treatment approaches.
Researchers found that autophagy selectively degrades PKA inhibitory subunit RIa, promoting mitochondrial metabolism and tumor cell growth. Suppression of AKAP11 levels in tumor cells prevents degradation and blocks PKA activation, inhibiting tumor cell growth.
Researchers discovered pancreatic cancer cells employ macropinocytosis, a novel pathway to procure nutrients when autophagy is inhibited, enabling them to thrive despite starvation. A combination of autophagy and macropinocytosis inhibitors resulted in rapid tumor regression in mouse models.
Researchers discovered human BCAS3 and C16orf70 as novel autophagic proteins, which accumulate around damaged mitochondria after mitophagy induction. The BCAS3-C16orf70 complex is required for autophagosome formation site recruitment, indicating accessory functions in autophagy machinery.
Researchers have unraveled the mechanisms of how cells capture and degrade fluid droplets through autophagy. The study reveals that a tug-of-war between the droplet's surface tension and the isolation membrane's bending energy governs this process, with the outcome determining whether a piece or complete droplet is captured.
Researchers discovered SETD2 modifies actin cytoskeleton, regulating cell migration and autophagy. Defects in SETD2 lead to impaired delivery of chromosomes and separation of daughter cells during cell division.
Scientists have identified a key gene necessary for cells to consume and destroy viruses through a process called autophagy. The study found that a gene called sorting nexin 5 (SNX5) plays a critical role in viral autophagy, suggesting that it could be used to develop broad-spectrum antiviral therapeutics.
A preliminary study found that a drug helping immune cells self-clean can improve vaccine protection in older adults. The drug boosts autophagy, which is blunted in older individuals, restoring immune cell function and enhancing vaccination efficiency.
Autophagy enables efficient nutrient use and survival in cells by recycling amino acids. The study found that autophagy-derived metabolites, particularly serine, facilitate respiratory growth by supporting one-carbon metabolism and mitochondrial protein synthesis.
A build-up of cellular trash in the brain can cause neurodegeneration and death. Researchers found that Wipi3, a protein involved in alternative autophagy, is essential for preventing toxic iron accumulation.
Researchers discovered that autophagy protects neurons by regulating calcium levels, which are essential for excitatory transmission. When autophagy is switched off, calcium stores become damaged, leading to elevated neurotransmitter release and neuronal hyperactivity.
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.
Researchers at Penn University found that autophagy, a cellular process, causes SIRT1 enzyme to degrade over time. Treating mice with an autophagy inhibitor restored SIRT1 levels, suggesting a new approach to treating age-related diseases.
Researchers at the University of Maryland discovered how Zika virus hijacks cellular machinery to break down KPNA2 protein, essential for neural development and communication. This process, known as autophagy, may lead to neurological or brain deficiencies in newborns born to infected pregnant women.
A Kumamoto University research team created an animal model of SCA by inhibiting chaperone-mediated autophagy in cerebellar neurons, leading to progressive motor dysfunction and neurodegeneration. Reduced CMA activity may be a common molecular mechanism for the disease.
Researchers found that diabetes increases autophagy initially, but then decreases it due to the activation of tumor suppressor p53 and microRNA miR-214, leading to hypertrophy, scarring, and inflammation in the kidneys. This discovery offers a potential target for preventing or slowing kidney failure.
Researchers aim to determine how autophagy, a cellular recycling process, is related to Alzheimer's disease and dementia. They will examine the effect of compromised autophagy on peripheral tissues and explore potential interventions to reverse decline.
Researchers have identified Atg9 vesicles as a platform for assembling the autophagy machinery to build autophagosomes. The biogenesis of autophagosomes involves numerous proteins, and isolating 21 components has enabled scientists to rebuild parts of the machinery in a controlled manner.
Researchers at the University of Bonn identify a disease mechanism where fat crystals cause immune system hyperreaction, leading to chronic inflammation. The study reveals that deoxysphingolipid crystals disrupt mitochondrial function and activate an inflammatory response in immune cells.
A study published in Nature Communications found that reversing age-related changes in fat cells may help prevent the development of lifestyle diseases such as diabetes and fatty liver. The research team discovered that inhibiting autophagy in adipocytes can restore function and prevent metabolic disorders.
Researchers have identified Atg40 as an ER-phagy receptor that curves and folds the ER membrane to facilitate autophagy. This process is crucial for proper cellular function and has significant practical applications in understanding diseases involving ER malfunction.
A new study reveals that nutrient-starved cells do not preferentially recycle ribosomes through autophagy, but instead degrade a small number of other organelles. Cells have mechanisms to control what they recycle, allowing them to maintain essential building blocks under limited nutrients.
Researchers at Tokyo Metropolitan Institute of Medical Science revealed a novel mechanism by which OPTN and ATG9A induce mitophagy, accelerating the autophagic degradation of damaged mitochondria. This interaction is crucial for PINK1/Parkin-mediated mitophagy in Parkinson's disease.
Researchers discovered a new mechanism linking osmotic stress to the activation of autophagosomes and lysosomes, which play central roles in cellular recycling and degradation. The study provides insights into how environmental influences impact cellular processes and offers potential therapeutic avenues for neurodegenerative diseases.
Researchers have identified a new strategy to tackle cancer by inducing toxic autophagy in tumor cells, resulting in cell destruction. The antitumor drug ABTL0812 has been shown to manipulate dihydroceramides, a group of cellular lipids, causing stress and ultimately leading to cancer cell death.
Scientists identify key proteins required for autophagy gene transcription during fasting, enabling activation of autophagic pathways to maintain a normal body weight. The discovery provides new insights into the molecular mechanisms underlying autophagy and its potential therapeutic applications.
Scientists from Tokyo Medical and Dental University discovered a key phosphorylation site on the protein Ulk1 that regulates alternative autophagy, a process by which cells recycle dysfunctional contents. The study found that this site is essential for the activation of alternative autophagy under genotoxic stress conditions.
Researchers found that pancreatic cancer cells use autophagy to degrade MHC-I proteins, making them resistant to immunotherapies. Blocking autophagy or using drugs like chloroquine enhances MHC-I expression on the surface of cancer cells, increasing their susceptibility to immunotherapy.
Researchers found that autophagy is dispensable for neuron survival but regulates axonal transport of molecules crucial for learning and memory. The study suggests that modulating autophagy activity may improve cognitive abilities by altering intracellular transportation systems.
Researchers have identified a gene linked to brain cancer in children that can aid in diagnosis and treatment. Elevated levels of the TPR gene were found in 38% of ependymoma cases, and its deletion led to reduced cancer growth and tumor shrinkage when treated with rapamycin.
Researchers discovered autophagy's selective degradation of protein liquid droplets but poor performance with aggregated proteins. This study used yeast and a test tube system to reconstitute the Ape1 isolation process, revealing the role of Atg8 and receptor proteins.
Researchers at MUSC and UCSD found that autophagy genes work against tumors in certain types of ovarian cancer. The study validated the role of BECN1 and LC3B as tumor suppressors, shedding light on their potential as targets for treatment.
Scientists have elucidated the mechanism of controlling autophagy through liquid-liquid phase separation, revealing a novel structure responsible for progression. The discovery has significant implications for understanding various intracellular phenomena and developing autophagy-specific control agents.
Researchers found that healthy cells clear harmful aggregates via endocytosis, a process previously thought to occur only on external substances. This discovery could lead to improved treatments for ALS by increasing the efficiency of endocytosis. The next step is to develop ways to enhance this process using genetic and chemical methods.
Scientists have found that autophagosomes produce their own membranes locally, rather than reusing existing components. This discovery could lead to a better understanding of how autophagy works and potentially improve health in old age.
Researchers discovered autophagy as a potential target in the fight against MERS, and found that licensed drugs like niclosamide can drastically reduce viral replication by inhibiting autophagic degradation. The study provides promising insights for developing new substances to combat MERS.
Researchers found that West Nile virus (WNV) inhibits autophagy to induce protein aggregation, leading to cell death and brain inflammation. A drug inducing autophagy can prevent cell death and reduce inflammation.
Researchers at University College London discovered that T cells in the liver can 'recycle' material through autophagy, a process enabled by the cytokine IL-15. This breakthrough could lead to more effective immunotherapies for cancer and chronic viral infections.
Scientists at Iowa State University restored much of the cardiac function in middle-aged flies, which experience many of the same heart maladies as middle-aged humans. By boosting a key genetic pathway called mTORC2, researchers almost fully restored heart function, showing promise for treating human heart disease.
A team led by Professor Patrick Labonté identified the role of autophagy in the replication cycle of Hepatitis D virus, which infects only people with hepatitis B. The discovery could lead to a targeted treatment, but raises concerns about long-term effects on cellular function.
Scientists at Sanford Burnham Prebys Medical Discovery Institute found that excess levels of a protein, p62 or SQSTM1, increase lifespan in worms. This discovery could help uncover treatments for age-related conditions like Alzheimer's disease.
The German Research Foundation has approved €12 million for the Collaborative Research Centre on selective autophagy. The research alliance aims to better understand autophagy at molecular and cellular levels to counteract imbalances in the system.
Researchers at Tohoku University have developed a molecule called AUTAC that can target specific intracellular components for degradation via autophagy. This process has been impaired in some cancers and neurodegenerative diseases, such as Down syndrome, making AUTAC a promising innovation for disease treatment.
Research published in Experimental Physiology shows that autophagy stimulation heals diabetics' blood vessels by clearing damaged cells. This study suggests targeting autophagy could be a potential treatment for vascular problems in Type 2 diabetic patients.
Autophagy, a cellular recycling process, is repressed during cell division to protect the genome. The researchers identified CDK1 as the key regulator of this repression, decoupling conditional control and halting autophagy until the cell division process is complete.
Researchers have discovered that autophagy activity is essential to maintain high mTORC1 activity in cells with mutated genes, and blocking this process can mimic human TSC symptoms. This finding holds promise for developing new therapeutic concepts for treating patients with this devastating disease.
Researchers found that beta-blockers can cause psoriasis by interfering with the breakdown of defective cell components and disrupting autophagy. This leads to the release of inflammatory messengers, resulting in skin problems. The study suggests that fat-soluble beta-blockers are more likely to cause inflammation.
A research team has identified a novel caloric restriction mimetic, 3,4-dimethoxychalcone, which induces autophagy and promotes longevity. The substance may prove useful in treating age-related diseases such as cardiovascular disease and cancer.