Epithelial cells lack claudins but maintain barrier against large molecules via JAM-A; removal of JAM-A disrupts barrier, expanding space between cells. The study challenges traditional views on tight junctions and epithelial barriers.
Researchers have confirmed that ions can be heated by plasma oscillations driven by high-energy particles using a new hybrid-simulation program. This breakthrough accelerates studies of plasma self-heating for realizing fusion energy.
Deshima, a Japanese-Dutch joint development, successfully obtained the first spectra and images of cosmic radio waves. The instrument achieves an ideal balance between frequency range and spectroscopic performance using innovative nanotechnology.
A team of fusion researchers successfully demonstrated alpha particle confinement in a plasma for the first time in helical systems. This achievement is significant as it promises the alpha particle confinement required for realizing fusion energy in a helical reactor.
Astronomers have discovered that high-density gas, the material for stars, accounts for only 3% of the total mass of gas distributed in the Milky Way. This finding implies a small number of opportunities to form stars and will be investigated further using Fugin data.
A team of scientists has identified a stem cell inducing factor called STEMIN that enables the direct conversion of leaf cells to stem cells in plants. This discovery sheds light on the molecular mechanisms underlying stem cell formation and regeneration in land plants.
Astronomers observed a massive protostar's gaseous disk for the first time, finding it shares common features with lighter baby stars. The discovery suggests that star formation is the same process, regardless of final mass.
Researchers using ALMA pinpointed a small dust concentration in the disk around TW Hydrae, suggesting a potential planet formation site. The discovery provides valuable insights into the process of planet formation and may help identify the final stage of planetary growth.
Researchers found that methylmercury increases cardiac fragility by removing an inhibitory brake on Drp1, a protein involved in mitochondrial fission. Treatment with a polysulfide group-releasing compound reversed this effect, suggesting a possible strategy to mitigate cardiotoxicity.
Researchers created a novel solid-state spin filtering device with artificial molecular motors that switch spin polarization direction by light irradiation and thermal treatments. The device demonstrates 4 times chirality inversion, allowing for precise control of spin-polarization direction in spin-polarized currents.
Research groups investigate KaiA and KaiC proteins' interplay to generate circadian oscillation in cyanobacteria. They find that KaiC degrades ATP within its ring structure, triggering the 'fishing a line' mechanism.
Researchers discovered that V1 neurons in fish spinal cords inhibit slow muscle activity during high-speed swimming. This mechanism enables fast swimming by preventing disturbance from slow muscle activity.
Researchers discovered aluminum oxide around a young massive protostar using ALMA data, providing insights into the early formation of meteorites and planets. The detection suggests that aluminum-rich dust can form in hot regions close to the star and later condense into solid particles.
Scientists created an EDLT device to control electron numbers and transfer energy, achieving superconducting states in both increasing and decreasing electron numbers. The system exhibited fundamentally different conditions for these states, with another superconducting state emerging when the substrate was bent.
Researchers have identified specific neurons in the brainstem of mice that encode sweetness and convey sweet taste-specific signals. This breakthrough study reveals new information about how different taste qualities are processed by distinct types of neurons.
Researchers found a star in the Milky Way Galaxy with low magnesium levels and high Europium levels, indicating it formed elsewhere, likely in a now vanished dwarf galaxy. The discovery suggests galaxy evolution models are supported by the presence of similar chemical signatures in other stars from dwarf galaxies orbiting the Milky Way.
A research team has identified the Sex-lethal gene as essential for the formation of apyrene sperm, a type of non-nucleated sperm found in some animals. Apyrene sperm are required for eupyrene sperm migration in female organs, indicating their importance in fertilization.
The researchers have fabricated an organic semiconductor pn junction with high crystallinity using molecular beam epitaxy, allowing for efficient electron and hole delocalization. This technology enables the realization of new concept organic solar cells with high energy conversion efficiency.
An international team of researchers discovered a pair of residues acting as a gate in the archaeal Na+/H+ antiporter PaNhaP. The gate's mutation speeds up the transporter twice as much as the wild type, suggesting a balance between fidelity and efficiency.
Researchers discovered that sex-determining genes control beetle horns and identified the timing of sex differences appearing at 36 hours after a reference point. The study found that transforming gene suppression during larval stages leads to male-like horn formation in females.
Researchers have identified a long non-coding RNA, LDAIR, that regulates seasonal changes in stress response in medaka fish. This lncRNA affects corticotropin-releasing hormone receptor 2 and modulates self-protective behaviors during breeding seasons.
Researchers have detected a radio signal from abundant interstellar dust in MACS0416_Y1, a galaxy 13.2 billion light-years away. This discovery forces scientists to rethink the history of star formation and suggests that the galaxy experienced staggered starburst periods.
A team of astronomers has discovered 83 quasars powered by supermassive black holes in the early Universe, increasing the number of known black holes at that epoch. The survey reveals the average spacing between supermassive black holes is a billion light-years, providing insights into their origin.
Researchers have spotted two rings of dust around a young star, suggesting the formation of a planetary system similar to our own. The observations provide clear answers to previous models, with one ring at the asteroid belt location and the other at the Neptune orbit.
A research team has successfully computed millions of highly accurate atomic data for neodymium ions, enabling studies of the origin of precious metals like gold and platinum. The findings show that the light of a kilonova, emitted by neutron star mergers, contains abundant heavy elements.
A study published in Cell Systems has characterized global phosphorylation and protein abundance changes in response to physical force in Xenopus embryos. The research team identified precise modulatory points in response to force, highlighting the importance of mechanical forces in tissue homeostasis.
Astronomers have discovered an intermediate-mass black hole, 30,000 times the mass of the Sun, hidden within a gas cloud near the Galactic center. The finding provides new insight into black hole growth and evolution, suggesting that small black holes can merge to form larger ones.
Astronomers using ALMA have found evidence of independent origins for two gas flows from a baby star. The slow outflow and high-speed jet have misaligned axes, indicating they were launched from different parts of the disk around the protostar.
A novel concept proposes a lateral alternating multilayered junction for organic solar cells, enabling long-distance carrier transport and extraction. The structure shows promising results with high exciton-collection efficiency, paving the way to exceed conversion efficiency of 20%.
Researchers have successfully grown functional mouse kidneys inside rats from just a few donor stem cells, offering a promising solution to the global kidney shortage. The study, published in Nature Communications, used the blastocyst complementation method to generate human stem cell-derived organs.
Astronomers using ALMA have detected complex organic molecules around the young star V883 Ori, similar to those found in comets in our Solar System. The distribution of these molecules has a ring-like structure with a radius of 60 au, which is twice the size of Neptune's orbit.
Scientists have discovered a 1.3 km radius body beyond Neptune's orbit, revealing more about the planet formation process. The detection supports models where planetesimals grow slowly into kilometer-sized objects before merging to form planets.
Researchers discovered that corals emit green fluorescence, attracting symbiotic dinoflagellates and potentially aiding coral recovery after bleaching. This biological signal enhances the chances of meeting new symbionts, suggesting a possible mechanism for corals to recover from heat stress-induced losses.
Scientists have elucidated the formation mechanism of amyloid-β substances, causative agents of Alzheimer's disease. They found that Aβ peptides tend to aggregate at hydrophilic/hydrophobic interfaces, forming β-hairpin structures that facilitate intermolecular hydrogen bonding.
Researchers discovered a novel mechanism for sperm stem cell number control, where cells migrate and compete for fibroblast growth factors (FGFs). This self-organized process regulates stem cell density in the testis, maintaining uniformity despite the absence of a canonical niche.
The MuSCAT2 instrument will use multi-color transit observations to separate actual exoplanets from eclipsing binary stars. This technique is essential for confirming a large number of new transiting exoplanet candidates, including Earth-like habitable planets orbiting stars near the Sun.
Researchers have identified a novel mechanism for neuronal regeneration after stroke. By overproducing the protein Slit in neuroblasts, these cells can migrate past activated astrocytes and mature into functional neurons.
Researchers have successfully developed a new vanadium alloy that is strong at high temperatures and can be used in the manufacturing of the fusion reactor blanket. The alloy, composed of 92% vanadium, has improved ductility due to high purity production methods, making it suitable for welding and machining without breaking.
An international team of astronomers has confirmed over 100 exoplanets using a combination of space-based and ground-based telescopes. The discovery includes ultra-short orbital period planets and low-mass rocky exoplanets, offering insights into their formation processes.
A team of astronomers used ALMA to observe a supermassive black hole in the Circinus Galaxy, finding that gas expelled from the center interacts with infalling gas to create a turbulent three-dimensional structure. This 'donut' structure is not rigid, but rather a complex collection of highly dynamic gaseous components.
Research reveals that the Nax channel in circumventricular organs detects increases in body fluids' sodium levels, triggering sympathetic nerve activity and blood pressure elevations. The study identifies acid-sensing ion channel 1a as a key mediator of this process, opening new avenues for treating salt-sensitive hypertension.
Scientists developed a new microscopy technique to track protein molecular motors with atomic-level precision and microsecond time resolution. The system achieved 1.3 angstrom localization precision at 1 millisecond time resolution, revealing details of the kinesin motor's motion.
Researchers discovered how filamin A and Drp1 interact to facilitate mitochondrial fission under hypoxic conditions, leading to heart failure. The study found that cilnidipine prevents this damaging process, preserving heart function after a heart attack or in cardiovascular disease.
Researchers have discovered an ultra-stripped supernova, a rare type of supernova believed to play a role in forming binary neutron star systems. The discovery advances understanding of gravitational waves and the origin of precious metals.
A study on Asian ladybird beetles reveals a single gene, pannier, that regulates diverse color patterns. The gene's expression affects black and red pigmentation in the forewing, driving morphological evolution.
Researchers discovered Serratia marcescens chitinase A (SmChiA) as a molecular motor that converts energy into unidirectional mechanical motion. It hydrolyzes recalcitrant crystalline chitin to form a water-soluble disaccharide, exhibiting fast and efficient degradation.
Researchers identified a specific brain region linked to reduced appreciation of one's own rewards when a partner receives a reward, providing insight into the emotion of envy. This finding has implications for understanding social behavior and valuation of resources.
Researchers have proposed a new method to investigate supernovae explosions, utilizing meteorites and electron anti-neutrinos. By measuring the amount of Ruthenium isotope 98Ru, scientists can estimate the characteristics of electron anti-neutrinos in supernovae, shedding light on their role in the explosion mechanism.
Researchers found that circumstellar matter surrounding red supergiant stars can hide shock breakout light, causing supernovae to brighten faster than expected. The discovery changes our understanding of stellar evolution and offers insights into the origin of diversity in supernovae.
Astronomers used ALMA to create the most detailed map of a distant starburst galaxy, finding highly unstable molecular clouds that lead to rapid star formation. The galaxy's gas is estimated to be consumed in 100 million years, 10 times faster than in other galaxies.