Articles tagged with Cytoplasm
A recent study published in Nature Communications reveals that the nucleus is less dense than the surrounding cytoplasm, despite its rich biomolecular composition. The researchers used light to probe density at microscales and found a consistent nuclear-to-cytoplasmic density ratio across eukaryotes.
Researchers found that ATP regulates protein condensation and cytoplasm viscosity, preventing harmful protein aggregates. Boosting ATP production decreases viscosity, dispersing existing and preventing future protein aggregations.
Researchers from Osaka University have identified a protein complex crucial for male fertility, revealing the TEX38/ZDHHC19 interaction regulates sperm development and structure. The study found that disrupting this complex can cause sperm deformity and infertility, providing insight into the causes of male infertility.
Researchers used two specialized microscopes to measure the forces that keep the nucleus centered within a living cell, providing new clues about cellular cytoplasm and organelle motion. The study found that the force required to move the nucleus in C. elegans was approximately 1/6th less than that measured in sea urchin eggs.
A new study published in Nucleic Acid Therapeutics found that siRNA reduces huntingtin mRNA levels in the cytoplasm but not in the nucleus of mouse brains, suggesting a limitation in its effectiveness for treating Huntington's disease. The research highlights the importance of understanding the structure and function of nuclear RNA to ...
Researchers from Leiden University discuss targeting ABC transporters in pancreatic ductal carcinoma (PDAC), a cancer with poor survival rates. The authors highlight the potential of inhibiting ABC transporters to overcome chemoresistance and suggest developing stratification protocols to identify patients most likely to benefit.
Researchers question whether micronuclei activate the cGAS-STING pathway, a key innate immune response to foreign nucleic acids. The study found that MN more commonly recognizes DNA during cell division without triggering STING activation.
Researchers discover HIV uses its capsid to bypass cellular defenses and transport genetic material into the cell nucleus. The 'smart' FG phase of the nuclear envelope allows the capsid to slide through, concealing the genomic payload from anti-viral sensors.
Researchers at UMass Amherst have discovered that tumor cells outwit the body's immune system by incorporating cytoplasmic material into their own T cells. This 'mosquito effect' helps cancerous tumors evade the immune system, making it a promising area of study for developing more effective treatments.
Researchers discovered how yeast cells transform their cytoplasmic biophysical properties to return to vegetative growth. The study sheds light on the mechanisms behind spore dormancy and its exit.
A new study at Stanford University found a previously unknown cellular pathway for clearing misfolded proteins from the nucleus. This pathway could be a target for therapies of age-related diseases like Alzheimer's, Parkinson's, and Huntington's. Cells use this pathway to manage misfolded proteins in both the cytoplasm and nucleus.
Researchers developed a laser-based approach to perform microbiopsies, enabling fast, painless tissue sampling with minimal damage. The novel technique uses laser ablation to extract tiny tissue volumes, which can be analyzed using virtual H&E imaging and other techniques in minutes, not hours.
Scientists at King's College London and the University of Bath have made a groundbreaking discovery about a molecule that plays a crucial role in nerve cell development. The study found that this molecule, known as SNRNP70, is not only present in the nucleus but also in the cytoplasm of nerve cells, where it shapes messenger RNA strand...
A new study has discovered that MTCH2, a protein essential in various cellular processes, acts as a 'door' for proteins to access the mitochondrial membrane. The finding opens up potential avenues for cancer treatments by harnessing apoptosis, a programmed cell death mechanism.
A team of researchers from Ritsumeikan University in Japan has elucidated the mechanism behind the liquid-solid phase transition of FUS protein that leads to ALS. They discovered a new therapeutic target, arginine, which suppresses FUS aggregation and could delay ALS progression.
Scientists have elucidated the regulatory functions of Pan1p, a key player in late-stage clathrin-mediated endocytosis. The protein drives actin assembly and disassembly, facilitating vesicle internalization.
Researchers at Tel-Aviv University have shed light on the Sigma-1 receptor's topology and function in neurodegenerative diseases. The study reveals that the receptor is retained in the endoplasmic reticulum and its amino end faces the cytoplasm, providing a crucial mechanism for therapeutic approaches to alleviate suffering from ALS.
Extramitochondrial cytochrome C interacts with histone chaperone ANP32B to activate PP2A and facilitate DNA repair. In severe cases of DNA damage, cytochrome C triggers programmed cell death.
When E. coli bacteria starve, their cytoplasm shrinks, concentrating nutrients, while the periplasm increases in volume as the inner membrane pulls away from the outer membrane. This reversible adaptation may help them survive until they find their next nutrient source.
Researchers at Stanford University School of Medicine discovered that the cytoplasm of ruptured Xenopus frog eggs spontaneously reorganizes into cell-like compartments. These compartments divide like real cells, undergoing over 25 rounds of division, and retain the ability to undergo division.
Researchers at IST Austria discovered that combined pulling and pushing forces within the embryo facilitate the segregation of cytoplasm from the yolk granules. Actin flows towards the animal pole drag along cytoplasm, while comet-like actin structures push yolk granules towards the vegetal pole.
Lehigh University engineers aim to develop a lab-on-a-chip method for cancer screening using microwave technology to analyze single cell nuclei. The team uses microfluidic devices to capture and release cells, then applies high-frequency microwave energy to sense internal details.
Researchers found that ZFC3H1 helps retain exosome targets in the nucleus, preventing their export to the cytoplasm. This new mechanism involves polyadenylated RNAs accumulating in distinct nuclear foci.
A new study by LMU researchers reveals that the aggregation of FUS protein is a central component of ALS and FTD. In healthy nerve cells, FUS is transported into the nucleus where it regulates DNA and RNA processing, but in neurons affected by ALS and FTD, its transport is compromised, leading to cytoplasmic aggregation.
Researchers at Osaka University discovered that Arid5a translocates from the nucleus to the cytoplasm in response to inflammation, regulating IL-6 production. This finding offers potential therapeutic strategies for septic shock and autoimmune diseases.
Researchers at Morgridge Institute for Research discovered a crucial enzyme called ERO1 that promotes cytoplasmic viral replication by bridging membrane barriers. This finding opens up a new target for broad-spectrum antivirals targeting positive-strand RNA viruses.
A Loyola University Chicago study has identified the protein bicaudal D2, which facilitates the trafficking and nuclear import of HIV-1 genomes during infection. This finding raises the possibility of developing a drug that would prevent HIV-1 from binding to bicaudal D2.
Researchers found that proteins remain fully or partially unfolded for parts of their lives, contradicting the long-held belief they must fold into complicated shapes to fulfill functions. The study suggests these unfolded proteins may reduce unwanted interactions by being expanded, potentially preventing dysfunction and disease.
Scientists at the University of Basel report that shuttling proteins, known as importins, control nuclear pore function, rather than the other way around. Importin alpha and beta cooperate to open and close the pore like a revolving door.
Researchers at Oregon State University discovered that Mycobacterium avium uses voltage-dependent anion channels to export effector proteins, which are essential for its survival. By disrupting this process, the distribution channels of the organism could be targeted to halt its progression.
Researchers have developed a novel approach to track HIV infection by identifying individual viral particles associated with infection. The new method reveals that uncoating leading to infection occurs early in the cytoplasm, around 30 minutes after cell fusion.
Researchers have discovered a circular RNA, Cdr1as, that regulates microRNA levels and modulates synaptic responses in the brain. This finding has significant implications for our understanding of neural function and may hold potential for treating psychiatric diseases.
Researchers discovered a new mechanism to prevent RNA from leaving cells' nuclei, leading to fresh treatment approaches for the most common form of motor neurone disease. By targeting SRSF1 protein, it's possible to reduce rogue RNA molecules and open up new areas of investigation for gene therapy.
Research reveals gene expression is a two-way communication between nucleus and cytoplasm, controlled by the Ccr4-Not complex. This protein complex acts as a messenger to ensure transcription and translation levels are well-balanced.
Researchers developed a way to embed light-responsive switches into proteins, allowing them to manipulate protein movement and activity in real-time. This new approach enables the rapid study of biological changes and reveals that cellular processes are more dynamic than previously expected.
A study by Kyoto University reveals that a cancer suppression protein may contribute to ALS disease progression. The research found that the malfunctioning of nerve support cells and misfolding of protein TDP-43 play key roles in ALS development.
UCLA scientists have discovered a crucial role for the Rbfox1 gene in regulating genes that contribute to autism risk. The study highlights an untapped region in brain cells as a goldmine of drug targets for new treatments.
Researchers at the University of Zurich have made a groundbreaking discovery that the nucleus acts as a passive filter to regulate gene activity, reducing random noise. By visualizing subtle physiological details with microscopic dyes, they were able to detect and predict the activity of individual genes in human cells.
Researchers have discovered a new pathway that tumor suppressor protein p53 uses to induce apoptosis and kill cancer cells. The process involves a shape change in one of p53's amino acids, which activates the BAX protein and triggers cell death.
A University of Toronto research team discovered a new link between the genetic cause of ALS and its pathology, suggesting that C9orf72's mislocalization leads to TDP-43 buildup. This breakthrough offers new avenues for research and potential treatment or cure.
The cytoplasm of mammalian cells is actually an elastic gel that creates random waves due to energetic processes in the cell. This new understanding provides a snapshot of the metabolic state of the cell and raises questions about cellular dynamics.
A team of scientists has discovered Rad50's crucial role in detecting and responding to foreign DNA from viruses. The protein interacts with a specific signal protein CARD9, forming a complex that activates the immune system's alarm mechanism, leading to the production of interleukin-1β.
Researchers have discovered that parasitic wasps can drain calcium from fruit fly blood cells to suppress their immune systems. This finding provides new insights into how pathogens break through a host's defenses and could lead to the development of new treatments for human immune disorders.
Researchers at UT Southwestern Medical Center identified a new enzyme, cyclic GMP-AMP synthase (cGAS), that acts as an innate immunity sensor. The discovery sheds light on the mechanism underlying immune responses to foreign DNA and may lead to new treatments for autoimmune diseases.
Researchers at Georgetown University Medical Center found that a protein disposal system issue is the root cause of both ALS and FTD. Delivering parkin genes to neurons can slow down disease progression. The study challenges dogma on TDP-43 accumulation in cytoplasm, suggesting it's not always bad.
Researchers used baker's yeast to identify a chink in the armor of Lou Gehrig's disease, discovering that blocking Dbr1 function can stop protein clumping and allow cells to live normally. The findings suggest therapeutic approaches aimed at blocking Dbr1 should be explored.
Researchers find that certain RNAs can pause without being degraded, enabling protein production, and suggesting multiple proteins could be made from the same mRNA
New evidence published in Cell reveals a novel budding mechanism capable of exporting large ribonucleoprotein particles from the nucleus to the cytoplasm, fundamentally changing our understanding of mRNA export from the nucleus. This study has implications for diseases such as muscular dystrophies and herpes-type infections.
Scientists have successfully reversed the toxicity of mutated ALS protein in yeast cells using a human gene. By introducing a 'rescue' protein, they eliminated the deadly effects without sending the toxic protein back to the nucleus. This breakthrough could pave the way for new treatments for the disease.
Researchers at the University of Georgia discovered a mechanism controlling cell movement linked to tumors becoming more aggressive. The misregulation of this switch may play a role in increased tumor cell movement and tumor aggressiveness.
Researchers at Albert Einstein College of Medicine have developed a microscope apparatus that achieves unprecedented resolution in living cells, allowing them to visualize the dynamic mechanism by which messenger RNA molecules pass through nuclear pores. This breakthrough could lead to treatments for disorders such as myotonic dystrophy.
Researchers found that mislocation of TDP-43 from the nucleus to the cytoplasm causes neurodegeneration associated with ALS and frontotemporal lobar degeneration. The study used a model system to investigate the effects of mutant TDP-43 on neurons.
Researchers found that Kaposi's sarcoma-associated herpesvirus uses polyadenylation to block normal gene expression in cells. The virus' SOX protein aberrantly lengthens mRNA poly(A) tails, sending a signal to the cell that its messages are wrong and holding them back.
Scientists create nanoneedle to deliver molecules into cell cytoplasm and nucleus with precision, enabling single-molecule studies and molecular manipulation. The delivery method combines molecular targeting strategies using quantum dots and magnetic nanoparticles.
Scientists develop a simple model for complex cell structure by creating artificial cells with molecular crowding and heterogeneity. The system mimics the behavior of proteins and nucleic acids in living cells, allowing researchers to study the effects of macromolecular crowding on chemical reactions.
Researchers at Thomas Jefferson University discovered a key protein component involved in inflammation detection and reaction to cytoplasmic DNA produced by infections or tissue damage. AIM2, a tumor suppressor, induces cell death to prevent pathogen replication.
Researchers found that cells tune gene expression using discrete bursts of activation, proportional to the frequency of nuclear localization pulses. This 'bang bang' regulation controls gene expression, with genes affected in proportion to the number or frequency of these jumps.
A team of Penn State researchers created a simple artificial cell with a mix of PEG and dextran polymers to investigate the organization and function of cell components. The model cell exhibited polarity, a critical step in development, and showed the interrelationship between cytoplasm and cell membrane.
Researchers found that Vax2 protein shuttles between nucleus and cytoplasm in response to Sonic hedgehog signaling molecule. In its nuclear state, Vax2 represses Pax6, allowing optic nerve development. In contrast, Pax6 regulates retinal fate. This coordination is crucial for proper eye development.
Scientists at Cold Spring Harbor Laboratory identified a messenger RNA molecule that switches from non-protein coding status to protein coding status in response to cellular stress. This 'cut and run' mechanism likely controls the expression of many genes, providing a rapid response to viral infection or other stresses.