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101.
Shota Sato 《Journal of Mathematical Analysis and Applications》2008,343(2):1061-1074
We investigate the initial-boundary problem
102.
2-DE is one of the most powerful methods for analyzing proteins expressed in cells and tissues. Immunodetection of proteins blotted on a polymer membrane is the method of choice for detecting specific proteins in 2-D gels. To precisely locate spots of immunoreactive proteins in 2-D gels, both dye staining and immunodetection were performed on the same PVDF membrane. Prior to immunodetection, nonspecific adsorption of the antibodies to the membrane was blocked with a synthetic polymer-based reagent (N-102) after protein transfer. The protein was then stained with colloidal gold or CBB followed by protein spot identification by LC-MS. Described herein is a method for multiplex analysis of proteins transferred to a PVDF membrane. Proteins that were phosphorylated at tyrosine in the phosphoproteome of rice callus or human ovarian cancer cells were detected by immunoblotting and subsequently identified with high precision. 相似文献
103.
Yasuya Kudo Kazunori Koiwai Kazuhiro Shimizu Shota Kusuki Mina Sakuragi Naohiko Shimada Yoichi Takeda Kazuo Sakurai 《中国化学快报》2008,19(9):1115-1118
A lipoplex (i.e., pDNA#1/lipid complex and transfection reagent for pDNA delivery) containing galactosylceramide (GalCer) and an amidine-bearing lipid (TRX) was examined whether the bound pDNA was specifically ingested by hepatocyte via asialoglycoprotein receptor (ASGPR) and then expressed protein. Gel electrophoresis and small-angle X-ray scattering (SAXS) confirmed that the TRX-GalCer liposome#2 complexed with pDNA and the resultant lipoplex took a hexagonally packed inverted cylinder structure when the GalCer composition was less than 20 wt.% of the total lipid. When the lipoplex carrying pGL3 (luciferase-cording pDNA) was administrated to HepG2, the luciferase activity was increased with increasing the GalCer composition until it reached 3 wt.% and then decreased upon further addition of GalCer. When we added galactose itself as a competitor, the luciferase activity was decreased, while glucose did not show such decrease, suggesting that HepG2 ingested the lipoplex via ASGPR-mediated endocytosis. This paper indicated that the hexagonally packed inverted cylinder structures of lipoplex may not always provide excellent transfection and presented a possibility that the TRX lipoplex#3 can obtain a cellulartargeting ability through the receptors for oligosaccharide. 相似文献
104.
A collection of plants from the country of Georgia (Galanthus caucasicus, Magnolia obovata, Cocculus laurifolius, and Veratrum lobelianum) has been studied for their alkaloid content. Our studies led to the isolation and identification of 24 alkaloids, three of which are being identified and reported for the first time. 相似文献
105.
Construction of a Metal‐Free Electron Spin System by Encapsulation of an NO Molecule Inside an Open‐Cage Fullerene C60 Derivative
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Shota Hasegawa Yoshifumi Hashikawa Prof. Dr. Tatsuhisa Kato Prof. Dr. Yasujiro Murata 《Angewandte Chemie (International ed. in English)》2018,57(39):12804-12808
A reactive radical species, nitric oxide (NO), was encapsulated in a unimolecular form inside an open‐cage fullerene derivative under high‐pressure conditions in the solid state. Surprisingly, the molecular complex showed sharp 1H NMR signals despite the existence of the paramagnetic species inside the carbon cage. Owing to the paramagnetic shifts, the escape rate of the NO was determined experimentally. After constructing a stopper on the rim of the opening, the NO was found to stay inside the cage even at 50 °C. The ESR measurements of the powdery sample showed paramagnetic properties at low temperature. The single‐crystal X‐ray structure analysis clearly demonstrated the existence of the encapsulated NO molecule, suggesting rapid rotation inside the cage. The 1H NMR chemical shifts displayed a large temperature dependence owing to the paramagnetic effects. 相似文献
106.
Conformational Planarization versus Singlet Fission: Distinct Excited‐State Dynamics of Cyclooctatetraene‐Fused Acene Dimers
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Takuya Yamakado Shota Takahashi Prof. Dr. Kazuya Watanabe Prof. Dr. Yoshiyasu Matsumoto Prof. Dr. Atsuhiro Osuka Prof. Dr. Shohei Saito 《Angewandte Chemie (International ed. in English)》2018,57(19):5438-5443
A set of flapping acene dimers fused with an 8π cyclooctatetraene (COT) ring showed distinct excited‐state dynamics in solution. While the anthracene dimer showed a fast V‐shaped‐to‐planar conformational change within 10 ps in the lowest excited singlet state, reminding us of extended Baird aromaticity, the tetracene dimer and the pentacene dimer underwent intramolecular singlet fission (SF) in different manners: A fast and reversible SF with a characteristic delayed fluorescence (FL), and a fast and quantitative SF, respectively. Conformational flexibility of the fused COT linkage plays an important role in these ultrafast dynamics, demonstrating the utility of the flapping molecular series as a versatile platform for designing photofunctional systems. 相似文献
107.
Abdou Tchoukoua Turibio Kuiate Tabopda Shota Uesugi Ken‐ichi Kimura Eunsang Kwon Hiroyuki Momma Bonaventure Tchaleu Ngadjui Takuya Koseki Yoshihito Shiono 《Magnetic resonance in chemistry : MRC》2016,54(11):893-896
Phytochemical investigation of the roots of Albizia chevalieri led to the isolation of two new 5‐deoxyflavan‐3,4‐diol glucosides from roots of A. chevalieri, Chevalieriflavanosides A and B. Their structures were established by 2D NMR techniques, UV, IR, CD, and mass spectrometry. Cytotoxicity of the two compounds was evaluated against acute promyelocytic leukemia HL60 cells. The antibacterial activities of 1 and 2 also were evaluated against Pseudomonas aeruginosa and Staphylococcus aureus using the agar diffusion test. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
108.
Shota Sasaki Toru Ube Kenji Katayama Masayasu Muramatsu Hiroshi Miyasaka 《Molecular Crystals and Liquid Crystals》2018,662(1):53-60
ABSTRACTWe prepared crosslinked azotolane liquid-crystalline polymer (LCP) films doped with a stilbene derivative (two-photon chromophore) utilizing an interpenetrating polymer network (IPN) structure. The IPN films bend toward the light source upon irradiation with femtosecond laser pulses at 600 nm, which can excite the stilbene derivative by two-photon absorption. The bending speed of the IPN films increases with the square of the laser pulse intensity, which is compelling evidence for the two-photon processes. 相似文献
109.
110.