1,693 results match your criteria: "Kwansei Gakuin University[Affiliation]"

Further exploration of the physicochemical nature of μ-bridge-relevant deprotonations the elucidation of four kinds of alditol complexes.

Phys Chem Chem Phys

December 2024

Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.

Single-crystal structures of four alditol complexes are presented. In LuCl/galactitol and ScCl/-inositol complexes, μ-bridge-relevant deprotonations were observed. The polarization from two rare earth ions in the μ-bridge activates the chemically inert OH and promotes deprotonation.

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Elementary Exciton Processes of InP/ZnS Quantum Dots Under Applied Pressure.

Nano Lett

December 2024

Graduate School of Science, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan.

In colloidal quantum dots (QDs), excitons are confined within nanoscale dimensions, and the relaxation of hot electrons occurs through Auger cooling. The behavior of hot electrons is evident under ambient pressure. Nanocrystal characteristics, including their size, are key to determining hot electron behavior because they serve as the stage.

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Interpolation of Imaging Mass Spectrometry Data by a Window-Based Adversarial Autoencoder Method.

J Am Soc Mass Spectrom

December 2024

Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 431-3192, Japan.

Imaging mass spectrometry (IMS) is a technique for simultaneously acquiring the expression and distribution of molecules on the surface of a sample, and it plays a crucial role in spatial omics research. In IMS, the time cost and instrument load required for large data sets must be considered, as IMS typically involves tens of thousands of pixels or more. In this study, we developed a high-resolution method for IMS data reconstruction using a window-based Adversarial Autoencoder (AAE) method.

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Optically active cofacial ABCD-Pt(II)-porphyrin dimer exhibits bright circularly polarized phosphorescence.

Chem Commun (Camb)

December 2024

Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan.

Synthesis of an intrinsically chiral cofacial ABCD-Pt(II)-porphyrin (Por) dimer was achieved by the simple Pt-templated synthesis of Por, followed by Suzuki-Miyaura cross-coupling. The isolated enantiomers exhibited bright red circularly polarized phosphorescence with a value above 10 M cm.

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The present study aimed to identify crucial tipping points during neuronal development in a post-mitotic state using Raman spectroscopy and a dynamic network biomarker (DNB) analysis. A DNB analysis is a promising method to detect early signal during state transition. We previously developed an in vitro model that mimics neuronal development.

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Fluorinated Conjugated Microporous Polymers Based on Pillar[]arenes for Removal of Water Pollutants and Their Cation Selective Adsorption.

ACS Appl Mater Interfaces

December 2024

Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.

Organic dyes are widely used in many applications. However, the leakage of organic dyes into the natural environment has become a severe and worldwide problem owing to their high toxicity and nonbiodegradability. Therefore, the development of effective removal technologies for organic dyes is required.

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Statins are cholesterol-lowering drugs often used for the treatment of dyslipidemia. Statins also exert anti-cancer effects by inhibiting hydroxymethylglutaryl-CoA reductase (HMGCR), a rate-limiting enzyme in cholesterol synthesis. We previously reported that the susceptibility to statin treatment differs among cancer cells and that functional E-cadherin expression on the plasma membrane could be a biomarker of statin sensitivity in cancer cells.

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Monitoring oxidation causes (i.e. radical and/or photo-oxidation) of vegetable oil gives very important information for its quality control.

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Hydrogen-Assisted Mg Intercalation into 2H-TaS.

J Am Chem Soc

December 2024

Research Institute for Electronic Science, Hokkaido University, Kita 20 Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan.

Intercalation reactions are highly dependent on the electronic and structural relationships between host and guest materials. It is difficult for divalent ions, such as Mg, to undergo intercalation reactions compared with monovalent cations. However, further development of synthetic techniques for controlling divalent ions is strongly demanded to advance applied chemistry and fundamental physics.

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Chondroitin extends lifespan and healthspan in C. elegans, but the relationship between extracellular chondroitin and intracellular anti-aging mechanisms is unknown. The basement membrane (BM) that contains chondroitin proteoglycans is anchored to cells via hemidesmosomes (HDs), and it accumulates damage with aging.

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The N-Terminal Region of the Transcription Factor E2F1 Contains a Novel Transactivation Domain and Recruits General Transcription Factor GTF2H2.

Biomolecules

October 2024

Department of Biomedical Sciences, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda 669-1330, Hyogo, Japan.

Article Synopsis
  • - E2F1 is a transcription factor that plays a dual role in cell growth, promoting both cell proliferation and tumor suppression, particularly when the tumor suppressor pRB is not functioning.
  • - The N-terminal region of E2F1 is crucial for activating tumor suppressor genes, as removing this region significantly reduces its ability to do so.
  • - GTF2H2, a general transcription factor, interacts with the N-terminal region of E2F1 and enhances its tumor suppressor gene activity, while its knockdown negatively impacts this function.
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Supramolecular polymers (SPs) formed via the stacking of π-conjugated molecules are attractive nanomaterials because of their potential optoelectronic properties derived from the non-covalent interaction between the π-skeletons. Especially, SPs possessing naphthalenediimide (NDI) core units can act as superior electron acceptors due to their deep lowest unoccupied molecular orbital (LUMO). Interaction of such SP with electron donors can realize a charge transfer system, but this has not been established.

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CRISPR-Cas9 Genome Editing in Auxotrophic and Non-auxotrophic Fission Yeast Strains.

Methods Mol Biol

November 2024

Department of Biosciences, School of Biological and Environmental Sciences, Kwansei Gakuin University, Sanda, Japan.

The CRISPR/Cas system is a very powerful genome-editing tool that has been developed over the past decade to optimize genome editing for many organisms. Here, we describe a rapid genome-editing method for fission yeast using the CRISPR-Cas9 system. It allows rapid generation of desired auxotrophic and non-auxotrophic strains without perturbing the local genome content by avoiding the insertion of selection markers at target loci.

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Endocytosis-derived extracellular vesicles (EVs), which can be as small as 100 nm, are useful for disease prediction. However, very small EVs are below the optical diffraction limit and are difficult to visualize with conventional fluorescence microscopy. In this study, single EVs captured on a plasmonic chip, where fluorescently labeled antibodies were bound over the EV surface, were detected as bright spots using plasmon-field enhanced fluorescence without any pretreatment of isolating labeled EVs, followed by analyzing the full width at half-maximum and the fluorescence peak value for each enhanced fluorescence bright spot.

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We synthesized trigonal planar Cu(I) iodide complexes with 1,2-bis(methylpyridin-2-yl)disilane ligands - and investigated how the substitution position of the methyl group on the pyridine ring in σ-π conjugation affects their structure and physical properties. The structures were characterized by NMR, elemental analysis, and single-crystal X-ray diffraction. In the crystalline state, the methylpyridyl groups of - were coordinated with Cu(I) in an conformation relative to the Si-Si σ bond, whereas those of were coordinated with Cu(I) in a conformation relative to the Si-Si σ bond.

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Soft materials that respond to external stimuli are promising candidates for next-generation actuators with human-friendly nature. Among various stimuli to induce strain, light offers spatial selectivity, which allows versatile motion of a continuous body. However, spatial selectivity of photoactuation has been limited in two dimension due to the predominant absorption of photons by chromophores near a light source in accordance with Beer-Lambert law.

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Raman spectroscopy is used to monitor the development of live neurons exposed to cytosine arabinoside (ara-C). Ara-C is widely used to culture neurons and exclude non-neuronal cells. In this study, Raman spectra obtained from neurons exposed to ara-C were plotted using an analytical model of neuronal development to evaluate the impact of ara-C on neuronal development.

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Global dynamics of a simple model for wild and sterile mosquitoes.

Math Biosci Eng

September 2024

Department of Mathematical Sciences, College of Science and Engineering, Aoyama Gakuin University, 5-10-1, Fuchinobe, Chuoku, Sagamihara, Kanagawa 252-5258, Japan.

There are known methods to manage the population dynamics of wild and sterile mosquitoes by releasing genetically engineered sterile mosquitoes. Even if a two-dimensional system of ordinary differential equations is considered as a simple mathematical model for developing release strategies, fully understanding the global behavior of the solutions is challenging, due to the fact that the probability of mating is ratio-dependent. In this paper, we combine a geometric approach called the time-scale transformation and blow-up technique with the center manifold theorem to provide a complete understanding of dynamical systems near the origin.

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Protein ubiquitination extensively modulates protein functions and controls various biological processes, such as protein degradation, signal transduction, transcription, and DNA repair. Ubiquitination is a reversible post-translational modification, and deubiquitinating enzymes cleave ubiquitin from proteins. Ubiquitin-specific peptidase 46 (USP46), a deubiquitinase, is highly expressed in the brain and regulates neural functions.

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Mrc1 is essential for heterochromatin maintenance in Schizosaccharomyces pombe.

Genes Cells

December 2024

Department of Bioscience, School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo, Japan.

In eukaryotes, maintenance of heterochromatin structure that represses gene expression during cell proliferation is essential for guaranteeing cell identity. However, how heterochromatin is maintained and transmitted to the daughter cells remains elusive. In this study, we constructed a reporter system to study the maintenance of heterochromatin in the subtelomeric region of the fission yeast, Schizosaccharomyces pombe.

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Background The number of individuals who experience the onset of attention-deficit/hyperactivity disorder (ADHD)-like symptoms after the age of 12 years has been growing, which does not meet the diagnostic criteria for adult ADHD. We designated this condition as "pseudo-ADHD" and investigated its psychological implications by comparing the parenting attitudes in childhood and attachment styles among individuals with "pseudo-ADHD," those with adult ADHD, and healthy controls. Methods We conducted an online cross-sectional survey of adults aged 18 years.

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Selective perturbation of protein interactions with chemical compounds enables dissection and control of developmental processes. Differentiation of stomata, cellular valves vital for plant growth and survival, is specified by the basic-helix-loop-helix (bHLH) heterodimers. Harnessing a new amination reaction, we here report a synthesis, derivatization, target identification, and mode of action of an atypical doubly-sulfonylated imidazolone, Stomidazolone, which triggers stomatal stem cell arrest.

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Objective: We investigated the relationship between personal relative deprivation (PRD)-resentment from the belief that one is worse off than people who are similar to oneself-and locus of control.

Background: Research has yet to comprehensively investigate whether PRD is associated with a tendency to favor external (vs. internal) explanations for self- and other-relevant outcomes.

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