Articles tagged with Mammalian Cells
Researchers discover master cardiac stem cells capable of producing all three major tissues of the mammalian heart. The findings challenge traditional understanding of heart development and may hold promise for cardiac stem cell therapies.
Researchers found that antisense RNA molecules protect sex cells from self-destructing by blocking sense RNA production. This discovery reveals a new process of gene regulation and its potential application to mammals.
Researchers have identified a circuit diagram that allows movement information from one hemisphere to reach the H2 cell in the opposite hemisphere, enabling the fly to differentiate its own movement from environmental movement. The study found that the HSE cell directly and the CH cell indirectly provide input to the H2 cell.
A study by University of North Carolina researchers found that the protein CIB1 plays a critical role in proper sperm formation in mice. Mice missing both copies of the gene are infertile, while those with only one copy are fertile. This discovery sheds light on fertility genes and their potential impact on human infertility.
A new study by Imperial College London researchers reveals that parts of the cell nucleus are not arranged randomly, but follow a predictable pattern. The discovery provides valuable insights into how cells work and could eventually lead to a better understanding of cancer.
A special set of proteins coordinates trafficking through cellular compartments, enabling quick entrance and exit. The mechanism may have applicability in the biomedical field due to its universality across species.
Researchers at Rockefeller University developed a modified HIV virus that can infect both human and monkey cells, paving the way for more effective vaccine testing. By manipulating key proteins, they created a 'simian tropic HIV' (stHIV) that replicates vigorously in primate cells.
A new technique for collecting and identifying intrinsically unstructured proteins (IUPs) has been developed at St. Jude Children's Research Hospital. The study confirmed that most IUPs perform vital roles in daily cell activities, while also being linked to diseases like cancer.
Doris Tsao's research has shown that specific regions in the monkey brain are dedicated to recognizing faces, with neurons responding strongly to human and monkey faces. Her findings suggest that each face-recognizing neuron is tuned to respond to specific facial characteristics, allowing for the reconstruction of any face.
A new technique called multi-isotope imaging mass spectrometry (MIMS) allows researchers to image and quantify molecules at a subcellular level. This enables the tracking of individual donor cells after transplantation and the measurement of cancer treatment drug efficacy within cells.
GlycoFi and Dartmouth researchers engineered yeast cells to produce a broad repertoire of recombinant therapeutic proteins with human sugar structures. This achievement eliminates the need for mammalian cell culture, improving control over glycosylation and performance characteristics of therapeutic proteins.
The Dartmouth/GlycoFi team successfully completed the full humanization of glycosylation in yeast, eliminating the need for mammalian cells. This breakthrough enables the production of therapeutic proteins with improved biological function and manufacturing efficiency.
Scientists have found a way to get purine nucleoside phosphorylase (PNP) into the cells of mice lacking the enzyme, which could lead to a treatment for individuals with PNP deficiency. The PTD-PNP fusion protein corrected most immune defects in Pnp-deficient mice.
Researchers found increasing p16INK4a levels in older cells, leading to poor function and premature aging. Studies suggest a common aging mechanism across disparate cell types, with implications for age-related diseases like diabetes.
Researchers identified the cells and receptor responsible for sour taste, a primary gateway in all mammals for detecting spoiled food sources. The PKD2L1 receptor is found in a subpopulation of taste receptor cells on the tongue that do not function for sweet, bitter, or umami taste.
Researchers uncover a unique population of cells within the sebaceous gland, which produce and maintain the oily mixture called sebum. The discovery sheds new light on how stem cells renew and differentiate, with implications for understanding sebaceous gland disorders.
Researchers identified PKD1L3 and PKD2L1 proteins in human taste buds responsible for detecting sour tastes. The discovery could lead to developing ways to alter the perception of sour tastes, such as in children's medicines or health foods that currently taste sweet.
A specific signal in cells in the nervous system aggravates MS symptoms, which could be alleviated by blocking related proteins. Blocking these proteins is promising as a strategy for new therapies against MS.
Researchers at the University of Florida have found that bone marrow cells can regenerate damaged retinal pigment epithelium (RPE) cells, which play a crucial role in vision health. This breakthrough may lead to new treatments for diseases such as age-related macular degeneration and provide hope for patients with sight-robbing injuries.
Researchers have identified over 1400 proteins in liver cells of mice, mapping their locations in ten different compartments. The study's findings show that around 40% of these proteins also appear in other cell organs, suggesting a high degree of conservation across species.
Researchers at the University of Minnesota found a tiny population of cells in the intestine that signal T-cells to fight infections. This discovery may help study and develop treatments for diseases such as ulcerative colitis and Crohn's disease.
Scientists have made significant breakthroughs in understanding how proteins are transported across cell membranes, a process fundamental to all living organisms. The findings could lead to new insights into the treatment of type-2 diabetes and other diseases.
Researchers at the Broad Institute found an unusual molecular structure near developmental genes that enables embryonic stem cells to maintain their unique plasticity. This 'bivalent domain' acts as a kind of gene gatekeeper, controlling the expression of crucial genes in early development.
Researchers found that injections of spleen cells and transplants of islets from healthy mice temporarily cured diabetes in 4 out of 22 mice, but failed to restore insulin-producing beta cells. The procedure's success was confirmed by three independent labs, challenging the previous hypothesis on how it works.
Researchers genetically engineered mice whose hearts glow with a green light, shedding light on heart development. The study reveals the presence of specialized cells that delay beating between heart chambers, improving understanding of irregular heartbeats and basic physiology.
Researchers at Emory University Health Sciences Center successfully transplanted porcine islets into nonhuman primates, achieving insulin independence. The study suggests that xenotransplantation using CD28/CD154 costimulation blockade may be a safe method for reversing human type 1 diabetes.
Researchers discover that cellular transformation in mice and humans with asthma and chronic bronchitis leads to overproduction of mucus. A combination of two drugs, EGFR and IL-13 inhibitors, can prevent this transformation and normalize airway lining in patients.
A new technology allows researchers to observe RNA metabolism in live cells, enabling the identification of RNA-binding proteins and their interactions with specific RNAs. This breakthrough has the potential to reveal disease-associated RNAs, which could lead to new therapeutic targets.
Researchers at Washington University School of Medicine in St. Louis have identified EF1A-1 as a critical step in the pathway leading to high cellular fat and cell death. The protein plays a role in protein synthesis and cytoskeleton maintenance, and its presence dictates sensitivity to palmitate-induced cell death.
Researchers found that bats with functioning touch-sensitive receptors on their wings can fly more accurately and snag their prey in midair. The study also reveals the importance of Merkel cells, specialized 'touch' cells common in human skin, which help bats detect airflow across their wings.
Researchers used in vivo cell fate mapping to study the role of TGFbeta signaling in congenital eye disorders. They found that NC-derived cells contribute to various eye structures, and TGFbeta signaling is essential for their proper differentiation and morphogenesis.
Scientists have found that Golgi outposts, previously thought to play only a central role, are actually distributed throughout the length of growing dendrites. This discovery sheds light on how neurons sort proteins and regulate their growth, with implications for understanding brain development and neurodegenerative diseases.
Researchers at USC discovered that deleting the SIR2 gene can extend life span up to six times longer than normal when combined with caloric restriction. Human cells with reduced SIR2 activity also confirm its pro-aging effect, pointing to a new direction for human anti-aging research.
Researchers have discovered that stem cells derived from human heart tissue can develop into cardiospheres that express normal properties of primitive heart tissue. These cardiospheres were then grown in the laboratory and injected into mice with lab-induced heart attacks, where they migrated to damaged tissue and regenerated, improvin...
Researchers found that morning cells set pace for entire system, resetting evening clock daily without changing its intrinsic speed. Flies' circadian clocks are conserved with mammals, but studying them provides valuable insights into human brain anatomy.
Endosomes travel to the nucleus using back-and-forth movement, accumulating at an aster-like layout of microtubules. This symmetrical approach allows for efficient distribution of nutrients and molecular information.
A recent brain navigation study found that rats use the medial mammillary nucleus to solve navigational problems, which may be similar to how humans think. The study suggests that a sense of direction is crucial for spatial awareness and athletic performance.
The mammalian transcriptome has been completely mapped, showing a massive abundance of noncoding RNAs and antisense genes. This discovery has significant implications for our understanding of genetics, gene regulation, and cellular functions.
A collaborative project developed a way to study the function of genes in mice and humans using a moveable genetic element from moths. The technique, called piggyBac, allows for efficient genetic manipulation in vertebrates and mammals, enabling researchers to systematically understand the functions of mammalian genes.
The study found that suppressing SIRT1 increases the ability of cells to divide indefinitely without senescence. This discovery has potential applications in generating normal cells for research and could be used in techniques to produce large numbers of cells.
Researchers found that heterotrimeric G proteins regulate cell division orientation, influencing brain size. Impairing Gβγ signaling leads to overproduction of neurons, potentially contributing to inherited disorders like microcephaly or macrocephaly.
Researchers have identified a novel type of lung cell that can divide into fresh copies and specialized types, suggesting these cells may contribute to the development of most common lung cancers. The discovery could lead to earlier diagnosis and potentially more effective treatments for lung cancer.
A study published in the Journal of Clinical Investigation shows that reinfusing anergic T cells into rhesus monkeys after kidney transplantation leads to prolonged and potentially indefinite graft survival without additional immunosuppressive agents. This approach has shown promise for improving organ transplantation outcomes in humans.
Research reveals that mitochondrial activity produces reactive oxygen species that signal low oxygen levels, allowing cells to adapt and respond. Cells with disabled mitochondria fail to detect changes in oxygen availability, highlighting the critical role of mitochondria in oxygen sensing.
Researchers discovered that HIV-1 induces RNA interference in human cells but has a strategy to combat this defense. The protein Tat suppresses RNA silencing, helping the virus evade the cell's natural immune response.
Scientists at Stanford University have developed a new method, Mosaic Analysis with Double Markers (MADM), to create genetically engineered mice with specific mutated genes. This technique enables researchers to study gene function at high resolution, allowing for insights into human development and disease.
Researchers found that a peptide called GPCS significantly inhibited bone mineral loss in isolated bone cells from newborn rats. Additional studies are needed to determine the mechanism of action and effectiveness of GPCS on human bone health.
Researchers have discovered that skeletal precursors of cardiomyocytes (Spoc cells) can transform into beating cardiac muscle cells, offering hope for developing cell-based treatments for heart disease. These cells were isolated from adult mice and showed spontaneous rhythmic beating and expressed cardiac markers.
The study reveals that VIP peptide is essential for synchronizing the brain's biological clock, which regulates daily rhythms in behavior and physiology. Mice lacking VIP suffered from internal desynchrony, while adding VIP restored synchronicity.
Researchers identify mitochondria as key players in programmed cell death (apoptosis), a process essential for life and necessary for neural system development. The study reveals that mitochondrial fragmentation is required for cells to die, providing a unified understanding of cell death across species.
Lynne E. Maquat and her team identified a novel pathway for regulating RNA degradation, called Staufen1-mediated degradation (SMD). This mechanism affects numerous transcripts and is a new form of gene regulation. SMD activity may be regulated by cell signaling pathways.
Researchers at Purdue University discover a plant protein called osmotin that mimics the behavior of the hormone adiponectin in mammal muscle cells. The study suggests that osmotin could play a role in preventing diseases like diabetes, as it activates the same receptors as adiponectin.
Researchers at NYU developed a mathematical model that replicates the complex network of molecular interactions within a cell's circadian clock. The study found that rapid binding and unbinding of regulatory molecules is crucial for accurate timekeeping, contradicting the notion that more molecules lead to better accuracy.
A team of MIT researchers has successfully created a patch of heart tissue that displays characteristics of mature cardiac tissue, including regular contractions. The innovation involves seeding cells onto a biodegradable scaffold and applying electrical signals to mimic natural heart rhythms.
A team of researchers led by Carnegie Mellon University's Danith Ly has developed a way to deliver promising genetic tools into living cells. The tools, called GPNAs, use modified PNAs with improved cell uptake properties and can target specific disease-causing proteins.
Researchers at VGTI found that aging mice have greater T cell clonal expansions, which are less effective in fighting disease. This leads to a reduced ability to fight off pathogens, making the immune system less diverse and capable.
Researchers found that individual fibroblasts in rat and mouse tissues exhibit robust, persistent circadian rhythms of clock gene expression for at least 1-2 weeks in culture. This discovery confirms that peripheral tissue clocks are indeed independent and self-sustaining.
Researchers at RIKEN Center for Developmental Biology challenged the view that RET-independent GFRá1 signaling plays a significant physiological role in either development or regeneration. Studies on mice lacking RET-independent GFRá1 revealed no developmental defects, suggesting that this receptor complex is not essential.
Researchers at Rockefeller University discovered that the protein Par6-alpha plays a crucial role in spurring the centrosome to action, allowing brain cells to migrate and form the brain's outer layer. The study overturned long-held assumptions about adhesion as the primary mechanism for neuronal migration.
A new experimental drug called PSC-RANTES has shown promising results in preventing vaginal simian HIV transmission in monkeys. The study found that the highest dose of PSC-RANTES protected all five recipients from SHIV infection, suggesting a potential key target for strategies to prevent vaginal HIV transmission.