Articles tagged with Mammalian Cells
Researchers at Caltech have developed a new reporter gene that allows for the visualization of genetic activity using ultrasound, enabling the study of gene expression in tumors, immune cells, and other cell types. The breakthrough could lead to new diagnostic tools for diseases such as cancer and neurological disorders.
In a small clinical trial, Mayo Clinic researchers showed that senolytic drugs can significantly decrease senescent cell burden in humans. The study found that the combination of dasatinab and quercetin reduced senescent cells in blood, skin, and fat tissue for at least 11 days.
A team led by Michael Kyba identified an inhibitor that protects cells from toxic effects associated with facioscapulohumeral muscular dystrophy (FSHD) in cells and mice. The compound, iP300w, blocks the p300 enzyme needed by the DUX4 protein, preventing its toxic effects.
A study using cryoEM revealed the structural effect of a human mutation that made us immune to simian immunodeficiency virus (SIV). The mutation disrupted the ability of an SIV protein to bind human proteins, giving humans a grace period of tens to hundreds of thousands of years without the disease. This finding could provide clues for...
A new study has created the most detailed 'parts list' of the human brain to date, revealing crucial differences between human and mouse brain cells that could explain why many drugs don't work in humans. The study highlights key changes in gene expression related to serotonin receptors and neuron connections.
Researchers at the University of Pennsylvania have developed a method to transplant healthy lung cells into injured mice, improving blood-oxygen levels and promoting lung regeneration. The technique, using specialized alveolar type-two cells, showed promise in treating various models of lung injury.
The study reveals a high-definition picture of cell-to-cell signaling in the liver, identifying cellular changes that could drive nonalcoholic steatohepatitis progression. Single-cell analysis also uncovers new information about star-shaped cells and their role in liver fibrosis.
Researchers have identified a repurposed compound, bithionol, with selective membrane-targeting properties that effectively kill MRSA persister cells without harming mammalian cell membranes. This breakthrough suggests potential therapeutic applications for bithionol in treating recalcitrant MRSA persister-caused infections.
Researchers at CNIO have developed a method to isolate haploid mammalian cells with half the number of chromosomes, enabling efficient genetic research. Chemical compounds like DAB selectively favor haploid cells over diploid ones, promoting cell growth and replacement.
Researchers at Toho University found that mice lacking JunB develop severe autoimmune disorders due to reduced Treg cell number. Injecting high doses of IL-2 can mitigate colitis by expanding Treg cells, suggesting a potential novel strategy for treating inflammatory diseases.
A global survey has found crAssphage viruses in people's sewage across the world, with a history dating back to millions of years. The viruses are naturally occurring and not associated with health outcomes, but may help scientists target harmful gut bacteria.
A large-scale study has categorized over 20 different brain cell types in mice based on their shape and electrical behavior, offering new insights into the brain's cellular diversity. The research paves the way for a better understanding of human brain disorders and diseases by providing a comprehensive dataset for future investigations.
Researchers propose lab-grown insect meat as a solution to environmental concerns, combining benefits of insect farming, GM livestock and plant-based meat substitutes. The technology requires fewer resources and less energy-intensive control, with potential for mass food production and scalable cost-effectiveness.
Researchers developed two AI methods that decipher complex gene activity controlling cell fate decisions in retina development, relating this gene activity to other tissues and across different species. The findings provide key insights into human disease and highlight the potential for AI to shed light on cancer treatment.
Scientists have developed a new genetic tool called iSuRe-Cre that provides certainty in Cre-inducible genetic modifications. This innovation increases the efficiency and reliability of gene function analysis in mice, allowing for precise investigation of gene role during organ development, physiology, and disease.
Research reveals that insulin-producing beta cells can change their function in diabetes, producing somatostatin instead of insulin. This change may be reversible with the restoration of normal environment or chemical treatment. The study provides new insights into the effects of high blood sugar on hormone-producing cells.
Researchers at the University of Cambridge have identified a specialized population of skin cells called Regeneration-Organizing Cells (ROCs) that coordinate tail regeneration in frogs. These ROCs work together to regenerate a tail with the right size, pattern, and cell composition after amputation.
In a recent study, Rockefeller scientists found that skin cells in mice engage in two forms of competition, one during early embryonic development and the other before birth. Loser cells are eliminated by winners, promoting healthy tissue development. Disrupting this process leads to slower skin development and reduced barrier function.
Scientists at Scripps Research have discovered that the Rhes protein creates tunnel-like nanotubes that enable the toxic Huntington's protein to travel between neurons, contributing to brain cell destruction and disease progression. This finding improves understanding of how Huntington's disease attacks certain brain cells.
Researchers discovered that fibrinogen, a blood-clotting protein, plays a role in multiple sclerosis relapses. In a mouse model, injecting EVs containing fibrinogen activated CD8+ immune cells, leading to relapsing-remitting disease.
A team of researchers found that a protein called leucine tRNA-synthetase influences muscle regeneration and regrowth in an unexpected way. Lower levels of this protein enable mice to recover from muscle injury more quickly than those with normal levels, leading to stronger regenerated muscles.
Researchers identified messenger cells that promote bone regeneration and called into question an existing dogma in biology textbooks. The discovery may lead to better strategies for boosting bone repair in other parts of the body.
Researchers identified two lead compounds that disrupt SpCas9 DNA binding, enabling precise control over CRISPR-Cas9-based technologies. These small-molecule inhibitors are reversible and dose-dependent, allowing for safe use of gene editing tools.
Researchers found that autophagy helps build and break down plant oils by delivering fatty acids from membrane recycling to lipid droplets. By manipulating this process, scientists may be able to drive up oil accumulation in bioenergy crops.
Researchers at PSI have produced the most detailed image to date of a type of membrane protein involved in signal transmission. They discovered that this protein inhibits itself, preventing overproduction of cAMP, an important secondary messenger in cell signaling.
Researchers at Tokyo University of Science have discovered a demethylase enzyme that primes gene expression in plants, allowing them to regenerate tissues. This breakthrough could lead to faster and more efficient food production, helping to address global hunger.
A Belgian team developed a new bioinformatics method called cisTopic to analyze gene regulation in cells. The method discovers common topics of gene control across cells, revealing unique gene activity patterns. This enables researchers to understand cellular diversity and its implications for diseases.
A study from Stanford University School of Medicine found that rats' spatial maps change depending on their behavior and memories. The researchers suggest this process could play a role in addictive behavior in humans, as the brain's internal map is redrawn when rewards are associated with certain locations.
Grid cells in rat brain provide a 'treasure map' for goal-directed navigation by carrying information about goals, not just space. Their activity fields shift to follow the location of hidden rewards.
Removing senescent cells, also known as 'zombie cells,' from fat tissue in obese mice improves glucose levels and insulin sensitivity. The study also shows a decline in inflammatory factors and restored normal fat cell function.
Scientists from Cold Spring Harbor Laboratory have developed a novel platform to classify neurons in a mouse brain based on shape, connectivity, and location. This comprehensive approach enables precise identification of neuronal subtypes, such as axo-axonic cells, and sheds light on their unique characteristics.
New research reveals that individual amygdala neurons in monkeys respond to both touch, imagery, and sounds, suggesting these cells facilitate the processing of multisensory social and emotional information. The findings challenge assumptions about the amygdala's primary response to visual stimuli.
Researchers have discovered that the presence of L1CAM is crucial for chandelier cell connections, which are linked to neurological conditions like schizophrenia and epilepsy. The molecule enables long-distance communication between neurons, revealing a potential target for new therapeutic approaches.
Researchers have established a novel method to study DNA replication in individual cells, allowing them to gain insights into the mechanisms that maintain genomic DNA stability. The 'scRepli-seq' method revealed that genome replication profiles were highly conserved among cells and reflected the organization of chromatin compartments.
A team of researchers led by Joshua Sanes created the first cellular atlas of the primate retina, identifying 65-70 separate cell types and their expressed genes. The study sheds light on the mechanisms that give rise to differences in foveal cells and offers a foundation for understanding vision-related diseases.
Researchers at the Allen Institute have created the largest single-cell database of mammal organ development, tracing gene expression from a single cell to fully formed organs. The study provides valuable insights into human biology and developmental diseases, with potential applications in understanding common adult diseases.
Magnetic nanoparticles break down within stem cells, releasing iron that's stored in non-magnetic form or used to create new magnetic particles. This phenomenon may help explain the presence of natural magnetism in human cells.
A new study by Tel Aviv University researchers suggests that extremely low frequency electromagnetic fields from lightning, known as Schumann Resonances, may protect cells from damage under stress conditions. The study found significant effects on living heart cells of rats within 30-40 minutes when exposed to these fields.
Researchers at Harvard Medical School have identified a faulty molecular brake that interferes with the heart muscle's ability to contract and relax. The study found that a mutation in the MyBPC3 gene leads to an overactive motor that propels abnormal muscle contractions, causing the heart to beat too much and relax poorly.
Researchers have created mice with unusually short and long tails through genetic engineering, revealing key roles for the Lin28 and Hox13 genes in regulating tail development. The study provides new insights into the complex mechanisms controlling tail formation and has potential implications for understanding developmental and pathol...
Researchers found that inhibiting pyramidal neurons in the dorsal or ventral hippocampus after a meal caused rats to start their next meal sooner and consume more food. This study suggests boosting meal memories could help regulate future eating behavior.
Researchers found that obesity increases levels of senescent cells in the brain, which are linked to anxiety. Clearing these cells with senolytic drugs reduces anxious behavior and improves neurological function in mice.
Researchers at the Weizmann Institute of Science found that clearing senescent cells, which contribute to inflammation and aging, improves health outcomes in mice. The study, led by Prof. Valery Krizhanovsky and Dr. Yossi Ovadya, offers hope for potential anti-aging therapies.
Scientists from Uppsala University have devised a simple method to rescue stressed liver cells by temporarily reducing cellular stress. This approach allows suboptimal human hepatocytes to be revived with restored functionality, increasing the availability of high-quality cells for laboratory experiments.
Researchers developed a versatile vaccine effective in mice against Powassan virus and other tick-transmitted flaviviruses. The mRNA-based vaccine platform shows promise for rapid production of vaccines against emerging flaviviruses.
Researchers discover that exercise-induced hormone irisin activates cells responsible for bone remodeling in mice. The study reveals irisin's impact on sclerostin, a major cellular regulator of bone structure, and holds promise for future osteoporosis treatments.
A new study finds that dopamine is released in response to both pleasurable and unpleasurable experiences, training the brain to avoid painful stimuli. This yin-yang personality of dopamine has significant implications for treating addiction and other mental disorders, including schizophrenia.
Researchers identified the insula as a brain area linked to opioid-related social isolation in rats. Activating this region may help revive social behavior in opioid addicts, potentially improving recovery outcomes.
Scientists from the Diabetes Research Institute renewed their original theory that pancreatic progenitor cells exist and can regenerate in humans. The study's findings could potentially address a major challenge in type 1 diabetes by regrowing patients' own insulin-producing cells.
The Blue Brain Cell Atlas provides detailed information on major cell types, numbers, and positions in all 737 brain regions, accelerating progress in brain science. The atlas is freely available online, allowing users to visualize brain regions and download data for new analyses and modeling.
A study by IBS researchers found that Foxp1 protein stabilizes induced Treg (iTreg) cells, which play a crucial role in regulating the immune response. The lack of Foxp1 led to increased susceptibility to colitis and intestinal inflammation in mice.
A new study reveals how the poxvirus tricks cells into activating their own cell movement mechanism, allowing the virus to spread rapidly. The researchers found that a specific protein, vaccinia growth factor, plays a key role in this process, and that targeting this pathway could lead to new antiviral strategies.
A team of researchers at Osaka University has identified the molecular mechanism that enables cells to move in a specific direction. By analyzing the interaction between PTEN and PIP3 molecules, they found that these molecules mutually suppress each other, preventing cells from forming pseudopodia at different ends.
Scientists have discovered that some retina cells may be using an ancient light-sensing mechanism, which suggests a possible connection to the earliest photoreceptors. This finding was made in mice and has implications for understanding vision and its relationship to other biological processes.
A new analysis of E. coli cell data sheds light on the long-standing question of what triggers cell division, suggesting that both DNA replication and septum formation occur concurrently. This discovery challenges existing models and offers new perspectives on cellular growth and potential applications in understanding cancer.
The NIH BRAIN Initiative Cell Census Network has released its first data set, featuring the molecular identities of over 1.3 million mouse brain cells and anatomical data from 300 brains. This comprehensive characterization aims to integrate molecular, anatomical, and functional data on cell types in mice, humans, and non-human primates.
Researchers discovered that the brain's 'posture cells' can predict an animal's position in three-dimensional space. These neurons, found in the posterior parietal cortex (PPC) and frontal motor cortex (M2), encode body posture and spatial awareness in mice.
Researchers have made a major breakthrough in understanding how brain circuits control behavior by identifying two types of intermingled nerve cells with distinct roles. The study used extensive analyses of neurons' shapes, gene activity, and function to tease out which cells are responsible for planning and initiating movements.
Neuroscientists at the Allen Institute have sorted brain cells from the cerebral cortex into 133 different cell types based on their gene expression patterns. This comprehensive study provides a detailed catalog of brain cell types and lays the groundwork for understanding their functions.
Researchers have identified distinct differences between heart muscle cells that fail and those that adapt to high blood pressure. Cells that adapted were thicker, needed more energy, and could keep the heart beating, while failing cells became stretched out and weak.