Search Results - "Sadakane, Koichiro"
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Direct visualization of local activities of long DNA strands via image–time correlation
Published in European biophysics journal (01-12-2021)“…Bacteriophages with long DNA genomes are of interest due to their diverse mutations dependent on environmental factors. By lowering the ionic strength of a…”
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Chlorogenic Acid Protects DNA against Double-strand Breaks: Evidence from Single Molecule Observation
Published in Chemistry letters (05-06-2023)“…A natural polyphenol chlorogenic acid (CGA) is regarded as an antioxidant by preventing oxidative damage. Among the oxidative damages, DNA double-strand breaks…”
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Characteristic effect of hydroxyurea on the higher-order structure of DNA and gene expression
Published in Scientific reports (15-06-2024)“…Hydroxyurea (HU; hydroxycarbamide) is a chemotherapy medication used to treat various types of cancer and other diseases such as sickle cell anemia. HU…”
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Aggregation of the Dipeptide Leu-Gly in Alcohol-Water Binary Solvents Elucidated from the Solvation Structure for Each Moiety
Published in The journal of physical chemistry. B (14-01-2021)“…The aggregation of a dipeptide, l-leucine-glycine (Leu-Gly), at 100 mmol dm has been observed in 1,1,1,3,3,3-hexafluoroisopropanol (HFIP)-water and 2-propanol…”
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K+ promotes the favorable effect of polyamine on gene expression better than Na
Published in PloS one (03-09-2020)“…Polyamines are involved in a wide variety of biological processes including a marked effect on the structure and function of DNA. During our study on the…”
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Spontaneous Oscillations and Synchronization of Active Droplets on a Water Surface via Marangoni Convection
Published in Langmuir (31-10-2017)“…Shape-oscillations and synchronization are intriguing phenomena in many biological and physical systems. Here, we report the rhythmic mechanical oscillations…”
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Emergence of Pendular and Rotary Motions of a Centimeter-Sized Metallic Sheet under Stationary Photoirradiation
Published in Journal of physical chemistry. C (08-02-2018)“…We report that both rhythmic pendular motion and rotary motion are generated under stationary irradiation by a green laser for a centimeter-sized metallic…”
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Phase Transition and Dynamics in Imidazolium-Based Ionic Liquid Crystals through a Metastable Highly Ordered Smectic Phase
Published in The journal of physical chemistry. B (16-06-2016)“…The phase transition behavior and dynamics of ionic liquid crystals, 1-methyl-3-alkylimidazolium tetrafluoroborate with various alkyl chain lengths, were…”
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Salting-out and salting-in effects of amphiphilic salt on cloud point of aqueous methylcellulose
Published in Process biochemistry (1991) (01-08-2017)“…[Display omitted] •Methylcellulose (MC) is an amphiphilic water-soluble polymer.•Sodium tetraphenylborate (NaBPh4) is an amphiphilic organic…”
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Membrane Formation in Liquids by Adding an Antagonistic Salt
Published in Frontiers in physics (27-03-2018)“…Antagonistic salts are composed of hydrophilic and hydrophobic ions. In a binary mixture, such as water and organic solvent, these ion pairs preferentially…”
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Markedly Different Effects of Monovalent Cations on the Efficiency of Gene Expression
Published in Advanced biology (01-03-2023)“…The effect of monovalent cations on a cell‐free transcription–translation (TX–TL) system is examined using a luciferase assay. It is found that the potency for…”
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Solvation state of sodium tetraphenylborate in 3-methylpyridine and its aqueous solutions
Published in Journal of molecular liquids (01-12-2017)“…The solvation states of the sodium ion (Na+) and the tetraphenylborate ion (BPh4−) in 3-methylpyridine (3MP) and its mixture with deuterium oxide (D2O) were…”
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Self-Synchronous Swinging Motion of a Pair of Autonomous Droplets
Published in ACS omega (31-07-2019)“…Synchronized motion between two self-running oil droplets floating on an aqueous phase is reported. We describe the results of our observation on the…”
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Optical Fluid Pump: Generation of Directional Flow via Microphase Segregation/Homogenization
Published in The journal of physical chemistry letters (04-10-2018)“…We report the successful generation of directional liquid-flow under stationary laser irradiation at a fixed position in a chamber. We adopt a homogeneous…”
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Repulsive/attractive interaction among compact DNA molecules as judged through laser trapping: difference between linear- and branched-chain polyamines
Published in Colloid and polymer science (01-03-2019)“…It is well known that polyamines induce a folding transition from an elongated coil to a compact globule state for giant DNA larger than several tens of kbp…”
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Manipulating Living Cells to Construct Stable 3D Cellular Assembly Without Artificial Scaffold
Published in Journal of visualized experiments (26-10-2018)“…Regenerative medicine and tissue engineering offer several advantages for the treatment of intractable diseases, and several studies have demonstrated the…”
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Manipulating Living Cells to Construct a 3D Single-Cell Assembly without an Artificial Scaffold
Published in Polymers (30-07-2017)“…Artificial scaffolds such as synthetic gels or chemically-modified glass surfaces that have often been used to achieve cell adhesion are xenobiotic and may…”
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Emergence of Many Mini-Circles from a Coffee Suspension with Mechanical Rotation
Published in Physics (Online) (01-03-2021)“…Drying of an aqueous suspension containing fine granules leads to the formation of a circular pattern, i.e., the coffee-ring effect. Here, we report the effect…”
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Highly Concentrated Ethanol Solutions: Good Solvents for DNA as Revealed by Single-Molecule Observation
Published in Chemphyschem (16-02-2016)“…We observed single DNA molecules at different ethanol concentrations by using fluorescence microscopy. Large single DNA molecules undergo reentrant…”
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The Effect of Tetraphenylphosphonium Chloride on Phase Behavior and Nanoscale Structures in a Mixture of D2O and 3-Methylpyridine
Published in Chemistry letters (2012)“…The effects of adding an “inversely antagonistic” salt, tetraphenylphosphonium chloride (PPh4Cl), to a binary mixture of deuterated water and 3-methylpyridine…”
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