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Chinese Journal of Chemistry 2022年第21期40卷 2546-2558页

作者： Kazuo Takimiya Kirill Bulgarevich Kamon Sahara Kiseki Kanazawa Hiroyuki Takenaka kohsuke kawabata Department of Chemistry Graduate School of ScienceTohoku University6-3AobaAramakiAoba-kuSendaiMiyagi 980-8578Japan RIKEN Center for Emergent MatterScience(CEMS) 2-1HirosawaWakoSaitama351-0198Japan Advanced Institute for Materials Research Tohoku University(WPl-A/MR)2-1-1KatahiraAoba-kuSendaiMiyagi 980-8577Japan

To understand the effects of chalcogen atoms on the crystal structure of the series of 3,7-bis(methylchalcogeno)benzo[1,2-b:4,5-b′]dichalcogenophene-based organic semiconductors,three benzodifuran derivatives(1—3)and dimethoxy derivatives of benzodithiophene and benzodiselenophene(4 and 7)were newly synthesized to complete the“3×3 matrix”of the oxygen-,sulfur-,and selenium-derivatives(1—9).The crystal structures of 1—9 were classified into four classes,sandwich pitchedπ-stack(1),dimeric(2 and 3),pitchedπ-stack(4,5,7,8,9),and brickwork structure(6 and 9).The causes for the different crystal structures depending on the chalcogen atoms were investigated by the theoretical calculations,indicating that the chalcogen atoms in the core and substituents primarily affected the packing *** the crystal growth in the vapor phase afforded different polymorphs,the relationship between the crystal structure and the carrier transport property was carefully investigated.

关键词： Organic semiconductor Crystal structure Mobility Intermolecular interaction Chalcogen atom

Electrochemical Polymerization of 4,4-Dimethyl-2,2’-Bithiophene in Concentrated Polymer Liquid Crystal Solution

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Journal of Materials Science and Chemical Engineering 2017年第2期5卷 64-70页

作者： Naoto Eguchi kohsuke kawabata Hiromasa Goto Faculty of Pure and Applied Sciences Division of Materials Science University of Tsukuba Tsukuba Japan

Electrochemical polymerization of 4,4’-dimethyl-2,2’-bithiophene (4DMBT) was carried out in a concentrated solution of hydroxypropyl cellulose (HPC) liquid crystal in N,N-dimethylformamide. Infrared absorption spectra suggested that the resultant polymer film contains HPC. This study demonstrates an electrochemical preparation of a polymer composite having liquid crystal order. We proposed a helical stacking composite model.

关键词： Conjugated Polymer Electrochemical Polymerization Polymer Liquid Crystal Hydroxypropyl Cellulose

Chiral-Electroactive Low-Bandgap Polymer Composite

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Journal of Materials Science and Chemical Engineering 2017年第2期5卷 1-10页

作者： Naoto Eguchi kohsuke kawabata Hiromasa Goto Faculty of Pure and Applied Sciences Division of Material Sciences University of Tsukuba Tsukuba Japan

Electrochemical polymerization of an isothianaphthene based monomer for low-bandgap polymer was carried out in a polymer lyotropic liquid crystal. We prepared hydroxypropyl cellulose/N,N-dimethylformamide (HPC/DMF) lyotropic liquid crystal system as an electrolyte solution to perform electrochemical polymerization of a hydrophobic monomer, although water was commonly employed as a solvent for HPC. Resultant polymer prepared in HPC/DMF shows both electro-activity and optical activity. Fourier transform infrared absorption spectroscopy measurement reveals that the resultant material is composite of HPC and polyisothianaphthene based.

关键词： Electrochemical Polymerization Conjugated Polymer Isothianaphthene Hydroxypropyl Cellulose Composite

Ru complex and N,P-containing polymers confined within mesoporous hollow carbon spheres for hydrogenation of CO_(2)to formate

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Nano Research 2023年第4期16卷 4515-4523页

作者： Guoxiang Yang Yasutaka Kuwahara kohsuke Mori Catherine Louis Hiromi Yamashita Division of Materials and Manufacturing Science Graduate School of EngineeringOsaka University2-1 Yamada-okaSuitaOsaka 565-0871Japan Institute for Open and Transdisciplinary Research Initiatives(OTRI) Osaka University2-1 Yamada-okaSuitaOsaka 565-0871Japan Unit of Elements Strategy Initiative for Catalysts&Batteries(ESICB) Kyoto UniversityKatsuraKyoto 615-8520Japan JST PRESTO4-1-8 HonchoKawaguchiSaitama 332-0012Japan Sorbonne Université CNRSLaboratoire de Réactivitéde SurfaceLRSF-75005 ParisFrance

The development of reliable catalysts with both excellent activity and recyclability for carbon dioxide(CO_(2))hydrogenation is ***,a ternary hybrid heterogeneous catalyst,involving mononuclear Ru complex,N,P-containing porous organic polymers(POPs),and mesoporous hollow carbon spheres(Ru^(3+)-POPs@MHCS)is reported for CO_(2)hydrogenation to *** on comprehensive structural analyses,we demonstrated that Ru^(3+)-POPs were successfully immobilized within *** optimized Ru^(3+)-0.5POPs@MHCS catalyst,which was obtained with about 5 wt.%Ru^(3+)and 0.5 mmol POPs polymers confined into 0.3 g MHCS,exhibited high catalytic activity for CO_(2)hydrogenation to formate(turnover number(TON)>1,200 for 24 h under mild reaction conditions(4.0 MPa,120℃))and improved durability,compared to Ru^(3+)catalysts without POPs polymers(Ru^(3+)-MHCS)and unencapsulated MHCS(Ru^(3+)-0.5POPs)*** improved catalytic performance is attributed to the high surface area and large pore volume of MHCS which favors dispersion and stabilization of Ru^(3+)-***,the MHCS and POPs showed high CO_(2)adsorption ***^(3+)-POPs encapsulated into MHCS reduces the activation energy barrier for CO_(2)hydrogenation to formate.

关键词： heterogeneous catalysis porous organic polymers(POPs) mesoporous hollow carbon spheres CO_(2)hydrogenation formate synthesis

Modules for in vitro metabolic engineering:Pathway assembly for biobased production of value-added chemicals

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Synthetic and Systems Biotechnology 2017年第2期2卷 65-74页

作者： Hironori Taniguchi Kenji Okano kohsuke Honda Synthetic Bioengineering Lab Department of BiotechnologyGraduate School of EngineeringOsaka University2-1 YamadaokaSuitaOsaka565-0871Japan

Bio-based chemical production has drawn attention regarding the realization of a sustainable *** vitro metabolic engineering is one of the methods used for the bio-based production of value-added *** method involves the reconstitution of natural or artificial metabolic pathways by assembling purified/semi-purified enzymes in *** from distinct sources can be combined to construct desired reaction cascades with fewer biological constraints in one vessel,enabling easier pathway design with high *** modules have been designed,built,tested,and improved by different groups for different *** this review,we focus on these in vitro metabolic engineering modules,especially focusing on the carbon metabolism,and present an overview of input modules,output modules,and other modules related to cofactor management.

关键词： In vitro metabolic engineering Module Glycolysis Pentose phosphate pathway Cofactor management

Chemically oligomerizable TDP-43:a novel chemogenetic tool for studying the pathophysiology of amyotrophic lateral sclerosis

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Neural Regeneration Research 2022年第11期17卷 2434-2436页

作者： kohsuke Kanekura Yoshiaki Yamanaka Tamami Miyagi Masahiko Kuroda Department of Molecular Pathology Tokyo Medical University

Amyotrophic lateral sclerosis (ALS) is a devastating neurodegenerative disease characterized by the progressive loss of both upper and lower motor *** ALS cases are sporadic,but approximately 5-10%of patients have a f... 详细信息

关键词： sclerosis familial

Helianthus tuberosus(Jerusalem artichoke) tubers improve glucose tolerance and hepatic lipid profile in rats fed a high-fat diet

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Asian Pacific Journal of Tropical Medicine 2017年第5期10卷 418-422页

作者： Naoto Okada Shinya Kobayashi Kouta Moriyama kohsuke Miyataka Shinji Abe ChiemiSato Kazuyoshi Kawazoe Department of Clinical Pharmacy Practice Pedagogy Institute of Biomedical SciencesTokushima University Graduate School Department of Pharmacy Tokushima University Hospital Faculty of Pharmaceutical Sciences Tokushima University Faculty of Medicine Tokushima University

Objective:To analyze the effects of feeding Helianthus tuberosus(HT) tubers on glucose tolerance and lipid profile in rats fed a high-fat diet(HFD). Methods:A normal HFD or HFD including 10 w/w% HT tubers(HFD + HT) was fed to F334/Jcl rats. After 10 weeks,organ weights,glucose tolerance,and lipid profile were analyzed. Results:The body weight,liver weight,and epidermal fat content in the HFD group were higher than those of the normal group,and similar to those of the HFD + HT group. The oral glucose tolerance test at 10 weeks revealed that the blood glucose level 30 minutes after beginning the test in the HFD + HT group was significantly lower than that in the HFD group. Liver triglyceride and total cholesterol levels in the HFD + HT group were significantly lower than those in the HFD group. Fecal triglyceride and total cholesterol levels in the HFD + HT group were higher than those in the HFD group. Histological analyses revealed that fat and glycogen accumulation increased in the HFD group,but decreased in the HFD + HT group. Conclusions:These results indicate that HT tubers have anti-fatty liver effects based on improvements in glucose tolerance and the hepatic lipid profile.

关键词： Helianthus tuberosus Glucose tolerance Hepatic lipid profile

Tetrahymena p85 localizes to the cleavage furrow and interacts with Ca2+/calmodulin

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Tetrahymena p85 localizes to the cleavage furrow and interac...

CNVs Associated with Susceptibility to Cancers: A Mini-Review

Third Congress of the Asian-Pacific Organization for Cell Biology

作者： kohsuke Gonda Osamu Numata Institute of Biological Sciences University of TsukubaTsukubaIbaraki 305-8572Japan

cdaAl is one of the Tetrahymena temperature-sensitive cell division arrest mutants. In our previous study, by comparing proteins between wild type and cdaAl cells, using 2D SDS-PAGE, we detected a single protein (Mr=8...

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Journal of Cancer Therapy 2015年第5期6卷 413-422页

作者： Tomoko Furuya Yutaka Suehiro Yukihisa Namiki kohsuke Sasaki Department of Pathology Yamaguchi University Graduate School of Medicine Ube Japan Department of Oncology and Laboratory Medicine Yamaguchi University Graduate School of Medicine Ube Japan BraCare Genetics Inc. Shimonoseki Japan Research Institute for Animal Science in Biochemistry and Toxicology (RIAS) Sagamihara Japan JCHO Shimonoseki Medical Center Shimonoseki Japan

Copy number variations (CNVs) that are frequent in genome influence on susceptibility of various diseases including cancers. The present mini-review focuses on CNVs associated with susceptibility to the cancers. Since CNVs are different between cancer types, the analysis of the specific CNV makes it possible to estimate the susceptibility to the cancers of interest in individuals. Although it is true that available data on CNVs associated with cancer susceptibility are limited at present, accumulation of the data is accelerated with the research progression of CNVs in near future. Information on CNVs associated with cancer susceptibility is useful for not only cancer research but also personalized healthcare including cancer prevention.

关键词： CNV Cancer Susceptibility Carcinogenesis Cancer Genome Genomic Polymorphism

Involvement of the redox master regulator Nrf2 in host defense against Listeria monocytogenes infection

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Involvement of the redox master regulator Nrf2 in host defen...