1
|
Yoshida K, Kamijo T, Ono T, Dairaku T, Takahashi S, Kashiwagi Y, Sato K. Electrical Stimuli-Responsive Decomposition of Layer-by-Layer Films Composed of Polycations and TEMPO-Modified Poly(acrylic acid). Polymers (Basel) 2022; 14:polym14245349. [PMID: 36559714 PMCID: PMC9782790 DOI: 10.3390/polym14245349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022] Open
Abstract
We previously reported that layer-by-layer (LbL) film prepared by a combination of 2,2,6,6-tetramethylpiperidinyl N-oxyl (TEMPO)-modified polyacrylic acid (PAA) and polyethyleneimine (PEI) were decomposed by application of an electric potential. However, there have been no reports yet for other polycationic species. In this study, LbL films were prepared by combining various polycationics (PEI, poly(allylamine hydrochloride) (PAH), poly(diallydimethylammonium chloride) (PDDA), and polyamidoamine (PAMAM) dendrimer) and TEMPO-PAA, and the decomposition of the thin films was evaluated using cyclic voltammetry (CV) and constant potential using an electrochemical quartz crystal microbalance (eQCM). When a potential was applied to an electrode coated on an LbL thin film of polycations and TEMPO-PAA, an oxidation potential peak (Epa) was obtained around +0.6 V vs. Ag/AgCl in CV measurements. EQCM measurements showed the decomposition of the LbL films at voltages near the Epa of the TEMPO residues. Decomposition rate was 82% for the (PEI/TEMPO-PAA)5 film, 52% for the (PAH/TEMPO-PAA)5 film, and 49% for the (PDDA/TEMPO-PAA)5 film. It is considered that the oxoammonium ion has a positive charge, and the LbL films were decomposed due to electrostatic repulsion with the polycations (PEI, PAH, and PDDA). These LbL films may lead to applications in drug release by electrical stimulation. On the other hand, the CV of the (PAMAM/TEMPO-PAA)5 film did not decompose. It is possible that the decomposition of the thin film is not promoted, probably because the amount of TEMPO-PAA absorbed is small.
Collapse
Affiliation(s)
- Kentaro Yoshida
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama 963-8611, Fukushima, Japan
- Correspondence: ; Tel.: +81-24-932-8931
| | - Toshio Kamijo
- Department of Creative Engineering, National Institute of Technology, Tsuruoka College, 104 Sawada, Inooka, Tsuruoka 997-8511, Yamagata, Japan
| | - Tetsuya Ono
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama 963-8611, Fukushima, Japan
| | - Takenori Dairaku
- Integrated Center for Science and Humanities, The Section of Chemistry, Fukushima Medical University, 1 Hikarigaoka, Fukushima City 960-1295, Fukushima, Japan
| | - Shigehiro Takahashi
- Faculty of Pharmacy, Takasaki University of Health and Welfare, 37-1 Nakaorui-cho, Takasaki 370-0033, Gunma, Japan
| | - Yoshitomo Kashiwagi
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama 963-8611, Fukushima, Japan
| | - Katsuhiko Sato
- Faculty of Pharmaceutical Science, Tohoku Medical and Pharmaceutical University, 4-4-1 Komatsushima, Aoba, Sendai 981-8558, Miyagi, Japan
| |
Collapse
|
2
|
Dairaku T, Kawai R, Nozawa-Kumada K, Yoshida K, Ono T, Kondo Y, Kondo J, Ono A, Tanaka Y, Kashiwagi Y. Chemical reduction of Ag + to Ag employing organic electron donors: evaluation of the effect of Ag +-mediated cytosine-cytosine base pairing on the aggregation of Ag nanoparticles. Dalton Trans 2021; 50:12208-12214. [PMID: 35226008 DOI: 10.1039/d1dt01927a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ag+-mediated base pairing is valuable for synthesising DNA-based silver nanoparticles (AgNPs) and nanoclusters (AgNCs). Recently, we reported the formation of a [Ag(cytidine)2]+ complex in dimethyl sulfoxide (DMSO), which facilitated the evaluation of the effect of cytosine-Ag+-cytosine (C-Ag+-C) base pairing on the degree of AgNP aggregation in solution. As an aprotic solvent, DMSO was expected to dissolve the [Ag(cytidine)2]+ complex, and powerful reducing agents, such as organic electron donors. In this study, the chemical reduction of a cytidine/Ag+ system using a powerful reducing agent tetrakis(dimethylamino)ethylene (TDAE) was investigated. 1H/13C/15N NMR spectroscopic evidence was obtained to identify the iminium dication (TDAE2+), which is an oxidised form of TDAE. The results were compared with those obtained using another organic electron donor, tetrathiafulvalene (TTF), which exhibits a relatively lower reduction activity than TDAE. AgNPs prepared via redox reaction between [Ag(cytidine)2]+ and organic electron donors (TDAE and TTF) were characterised using UV-Vis spectroscopy and nanoparticle tracking analysis. It was found that the formation of C-Ag+-C base pairing inhibited the aggregation of AgNPs in solution. In addition, in the presence of cytidine, the total concentration of the AgNP solution was affected by the reduction activity of the reducing agent.
Collapse
Affiliation(s)
- Takenori Dairaku
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Rika Kawai
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Kanako Nozawa-Kumada
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Kentaro Yoshida
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Tetsuya Ono
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Yoshinori Kondo
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Jiro Kondo
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan
| | - Akira Ono
- Department of Material & Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686, Japan
| | - Yoshiyuki Tanaka
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Yoshitomo Kashiwagi
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| |
Collapse
|
3
|
Ono T, Sugiyama K, Komatsu S, Kumano M, Yoshida K, Dairaku T, Fujimura T, Sasano Y, Iwabuchi Y, Kashiwagi Y, Sato K. Catalysis of electro-oxidation of antibiotics by nitroxyl radicals and the electrochemical sensing of vancomycin. RSC Adv 2021; 11:21622-21628. [PMID: 35478798 PMCID: PMC9034136 DOI: 10.1039/d1ra03681e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/04/2021] [Indexed: 11/21/2022] Open
Abstract
Quantifying drug concentrations in vivo quickly and easily is possible using electrochemical methods. The present study describes the electrochemical detection of vancomycin (VCM) and other antibiotics from the current obtained using nitroxyl radicals as electrocatalysts. Nortropine N-oxyl (NNO), which is more active than 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO), a typical nitroxyl radical compound, produced greater current values for drugs with intramolecular hydroxy groups and secondary and tertiary amines. However, because the catalytic action of NNO is inactivated by primary amines in the substrate, VCM and teicoplanin with primary amines could not be detected. TEMPO was less active than NNO but not inactivated against primary amines. Therefore, electrochemical sensing of vancomycin was done using 4-acetamido-2,2,6,6-tetramethylpiperidine 1-oxyl (A-TEMPO), which has a greater oxidation capacity than TEMPO due to its electron-withdrawing groups. As a result, the current of A-TEMPO increased in the low concentration range of VCM as compared to TEMPO. This method also was able to quantify VCM in the concentration range of 10-100 μM, which is an important concentration range for drug monitoring in blood.
Collapse
Affiliation(s)
- Tetsuya Ono
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-machi Koriyama Fukushima 963-8611 Japan
| | - Kyoko Sugiyama
- Faculty of Pharmaceutical Science, Tohoku Medical and Pharmaceutical University 4-4-1 Komatsushima, Aoba Sendai Miyagi 981-8558 Japan
| | - Sachiko Komatsu
- Faculty of Pharmaceutical Science, Tohoku Medical and Pharmaceutical University 4-4-1 Komatsushima, Aoba Sendai Miyagi 981-8558 Japan
| | - Masayuki Kumano
- Graduate School of Pharmaceutical Sciences, Tohoku University 6-3 Aoba, Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Kentaro Yoshida
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-machi Koriyama Fukushima 963-8611 Japan
| | - Takenori Dairaku
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-machi Koriyama Fukushima 963-8611 Japan
| | - Tsutomu Fujimura
- Faculty of Pharmaceutical Science, Tohoku Medical and Pharmaceutical University 4-4-1 Komatsushima, Aoba Sendai Miyagi 981-8558 Japan
| | - Yusuke Sasano
- Graduate School of Pharmaceutical Sciences, Tohoku University 6-3 Aoba, Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Yoshiharu Iwabuchi
- Graduate School of Pharmaceutical Sciences, Tohoku University 6-3 Aoba, Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Yoshitomo Kashiwagi
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-machi Koriyama Fukushima 963-8611 Japan
| | - Katsuhiko Sato
- Faculty of Pharmaceutical Science, Tohoku Medical and Pharmaceutical University 4-4-1 Komatsushima, Aoba Sendai Miyagi 981-8558 Japan .,Department of Creative Engineering, National Institute of Technology, Tsuruoka College 104 Sawada, Inooka Tsuruoka Yamagata 997-8511 Japan
| |
Collapse
|
4
|
Dairaku T, Kawai R, Kanaba T, Ono T, Yoshida K, Sato H, Nozawa-Kumada K, Kondo Y, Kondo J, Ono A, Tanaka Y, Kashiwagi Y. Effect of cytosine-Ag +-cytosine base pairing on the redox potential of the Ag +/Ag couple and the chemical reduction of Ag + to Ag by tetrathiafulvalene. Dalton Trans 2021; 50:7633-7639. [PMID: 33973617 DOI: 10.1039/d1dt00975c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The redox properties of metallo-base pairs remain to be elucidated. Herein, we report the detailed 1H/13C/109Ag NMR spectroscopic and cyclic voltammetric characterisation of the [Ag(cytidine)2]+ complex as isolated cytosine-Ag+-cytosine (C-Ag+-C) base pairs. We also performed comparative studies between cytidine/Ag+ and other nucleoside/Ag+ systems by using cyclic voltammetry measurements. In addition, to evaluate the effect of [Ag(cytidine)2]+ formation on the chemical reduction of Ag+ to Ag, we utilised the redox reaction between Ag+ and tetrathiafulvalene (TTF). We found that Ag+-mediated base pairing lowers the redox potential of the Ag+/Ag couple. In addition, C-Ag+-C base pairing makes it more difficult to reduce captured Ag+ ions than in other nucleoside/Ag+ systems. Remarkably, the cytidine/Ag+ system can be utilised to control the redox potential of the Ag+/Ag couple in DMSO. This feature of the cytidine/Ag+ system may be exploited for Ag nanoparticle synthesis by using the redox reaction between Ag+ and TTF.
Collapse
Affiliation(s)
- Takenori Dairaku
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Rika Kawai
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Teppei Kanaba
- Application, Bruker Japan K.K., 3-9 Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa 221-0022, Japan
| | - Tetsuya Ono
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Kentaro Yoshida
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Hajime Sato
- Application, Bruker Japan K.K., 3-9 Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa 221-0022, Japan
| | - Kanako Nozawa-Kumada
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Yoshinori Kondo
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - Jiro Kondo
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan
| | - Akira Ono
- Department of Material & Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686, Japan
| | - Yoshiyuki Tanaka
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan.
| | - Yoshitomo Kashiwagi
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| |
Collapse
|
5
|
Ono T, Sato K, Sasano Y, Yoshida K, Dairaku T, Iwabuchi Y, Kashiwagi Y. Electrochemical Detection of Triglycerides Based on an Enzymatic Reaction and Electrocatalytic Oxidation with Nortropine‐ N‐oxyl. ELECTROANAL 2019. [DOI: 10.1002/elan.201800660] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tetsuya Ono
- School of Pharmaceutical SciencesOhu University 31-1 Misumido Tomita-machi, Koriyama, Fukushima 963-8611 Japan
| | - Katsuhiko Sato
- Graduate School of Pharmaceutical SciencesTohoku University 6-3 Aoba Aramaki, Aoba-ku, Sendai 980-8578 Japan
| | - Yusuke Sasano
- Graduate School of Pharmaceutical SciencesTohoku University 6-3 Aoba Aramaki, Aoba-ku, Sendai 980-8578 Japan
| | - Kentaro Yoshida
- School of Pharmaceutical SciencesOhu University 31-1 Misumido Tomita-machi, Koriyama, Fukushima 963-8611 Japan
| | - Takenori Dairaku
- School of Pharmaceutical SciencesOhu University 31-1 Misumido Tomita-machi, Koriyama, Fukushima 963-8611 Japan
| | - Yoshiharu Iwabuchi
- Graduate School of Pharmaceutical SciencesTohoku University 6-3 Aoba Aramaki, Aoba-ku, Sendai 980-8578 Japan
| | - Yoshitomo Kashiwagi
- School of Pharmaceutical SciencesOhu University 31-1 Misumido Tomita-machi, Koriyama, Fukushima 963-8611 Japan
| |
Collapse
|
6
|
Ono A, Atsugi T, Goto M, Saneyoshi H, Tomori T, Seio K, Dairaku T, Kondo J. Crystal structure of a DNA duplex cross-linked by 6-thioguanine–6-thioguanine disulfides: reversible formation and cleavage catalyzed by Cu( ii) ions and glutathione. RSC Adv 2019; 9:22859-22862. [PMID: 35514505 PMCID: PMC9067110 DOI: 10.1039/c9ra03515j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 07/04/2019] [Indexed: 11/21/2022] Open
Abstract
Herein, we determined the crystal structure of a DNA duplex containing consecutive 6-thioguanine–6-thioguanine disulfides. The disulfide bonds were reversibly formed and cleaved in the presence of Cu(ii) ions and glutathione. To our knowledge, this is the first reaction in which metal ions efficiently accelerated disulfide bond formation between thio-bases in duplexes. The crystal structure of a DNA duplex cross-linked by 6-thioguanine–6-thioguanine disulfides has been solved.![]()
Collapse
Affiliation(s)
- Akira Ono
- Department of Materials & Life Chemistry
- Faculty of Engineering
- Kanagawa University
- Yokohama
- Japan
| | - Takahiro Atsugi
- Department of Materials & Life Chemistry
- Faculty of Engineering
- Kanagawa University
- Yokohama
- Japan
| | - Misato Goto
- Department of Materials & Life Chemistry
- Faculty of Engineering
- Kanagawa University
- Yokohama
- Japan
| | - Hisao Saneyoshi
- Department of Materials & Life Chemistry
- Faculty of Engineering
- Kanagawa University
- Yokohama
- Japan
| | - Takahito Tomori
- School of Life Science and Technology
- Tokyo Institute of Technology
- Yokohama 226-8501
- Japan
| | - Kohji Seio
- School of Life Science and Technology
- Tokyo Institute of Technology
- Yokohama 226-8501
- Japan
| | | | - Jiro Kondo
- Department of Materials and Life Sciences
- Faculty of Science and Technology
- Sophia University
- Tokyo 102-8554
- Japan
| |
Collapse
|
7
|
Yoshida K, Ono T, Dairaku T, Kashiwagi Y, Sato K. Preparation of Hydrogen Peroxide Sensitive Nanofilms by a Layer-by-Layer Technique. Nanomaterials (Basel) 2018; 8:E941. [PMID: 30445711 PMCID: PMC6266851 DOI: 10.3390/nano8110941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/14/2018] [Accepted: 11/14/2018] [Indexed: 12/24/2022]
Abstract
H₂O₂-sensitive nanofilms composed of DNA and hemin-appended poly(ethyleneimine) (H-PEI) were prepared by a layer-by-layer deposition of DNA and H-PEI through an electrostatic interaction. The (H-PEI/DNA)₅ film was decomposed by addition of 10 mM H₂O₂. H₂O₂-induced decomposition was also confirmed in the hemin-containing (PEI/DNA)₅ in which hemin molecules were adsorbed by a noncovalent bond to the nanofilm. On the other hand, the (PEI/DNA)₅ film containing no hemin and the (H-PEI/PSS)₅ film using PSS instead of DNA did not decompose even with 100 mM H₂O₂. The mechanism of nanofilm decomposition was thought that more reactive oxygen species (ROS) was formed by reaction of hemin and H₂O₂ and then the ROS caused DNA cleavage. As a result (H-PEI/DNA)₅ and hemin-containing (PEI/DNA)₅ films were decomposed. The decomposition rate of these nanofilms were depended on concentration of H₂O₂, modification ratio of hemin, pH, and ionic strength.
Collapse
Affiliation(s)
- Kentaro Yoshida
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Tetsuya Ono
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Takenori Dairaku
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Yoshitomo Kashiwagi
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Katsuhiko Sato
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| |
Collapse
|
8
|
Yoshida K, Awaji K, Shimizu S, Iwasaki M, Oide Y, Ito M, Dairaku T, Ono T, Kashiwagi Y, Sato K. Preparation of Microparticles Capable of Glucose-Induced Insulin Release under Physiological Conditions. Polymers (Basel) 2018; 10:E1164. [PMID: 30961089 PMCID: PMC6403614 DOI: 10.3390/polym10101164] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 10/17/2018] [Accepted: 10/17/2018] [Indexed: 01/10/2023] Open
Abstract
Hydrogen peroxide (H₂O₂)-sensitive layer-by-layer films were prepared based on combining phenyl boronic acid (PBA)-modified poly(allylamine) (PAH) with shikimic acid (SA)-modified-PAH through boronate ester bonds. These PBA-PAH/SA-PAH multilayer films could be prepared in aqueous solutions at pH 7.4 and 9.0 in the presence of NaCl. It is believed that the electrostatic repulsion between the SA-PAH and PBA-PAH was diminished and the formation of ester bonds between the SA and PBA was promoted in the presence of NaCl. These films readily decomposed in the presence of H₂O₂ because the boronate ester bonds were cleaved by an oxidation reaction. In addition, SA-PAH/PBA-PAH multilayer films combined with glucose oxidase (GOx) were decomposed in the presence of glucose because GOx catalyzes the oxidation of D-glucose to generate H₂O₂. The surfaces of CaCO₃ microparticles were coated with PAH/GOx/(SA-PAH/PBA-PAH)₅ films that absorbed insulin. A 1 mg quantity of these particles released up to 10 μg insulin in the presence 10 mM glucose under physiological conditions.
Collapse
Affiliation(s)
- Kentaro Yoshida
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-Machi, Koriyama, Fukushima 963-8611, Japan.
| | - Kazuma Awaji
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Seira Shimizu
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Miku Iwasaki
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Yuki Oide
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Megumi Ito
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Takenori Dairaku
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-Machi, Koriyama, Fukushima 963-8611, Japan.
| | - Tetsuya Ono
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-Machi, Koriyama, Fukushima 963-8611, Japan.
| | - Yoshitomo Kashiwagi
- School of Pharmaceutical Sciences, Ohu University 31-1 Misumido, Tomita-Machi, Koriyama, Fukushima 963-8611, Japan.
| | - Katsuhiko Sato
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| |
Collapse
|
9
|
Yoshida K, Sato K, Ono T, Dairaku T, Kashiwagi Y. Preparation of Nafion/Polycation Layer-by-Layer Films for Adsorption and Release of Insulin. Polymers (Basel) 2018; 10:E812. [PMID: 30960737 PMCID: PMC6403611 DOI: 10.3390/polym10080812] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 07/20/2018] [Accepted: 07/23/2018] [Indexed: 11/30/2022] Open
Abstract
Thin films were prepared using layer-by-layer (LbL) deposition of Nafion (NAF) and polycations such as poly(allylamine hydrochloride) (PAH), poly(ethyleneimine) (PEI), and poly(diallydimethylammonium chloride) (PDDA). Insulin was then adsorbed on the NAF-polycation LbL films by immersion in an insulin solution. The NAF-polycation LbL films were characterized using a quartz crystal microbalance and an atomic force microscope. The release of insulin from the LbL films was characterized using UV-visible adsorption spectroscopy and fluorescence emission spectroscopy. The greatest amount of insulin was adsorbed on the NAF-PAH LbL film. The amount of insulin adsorbed on the (NAF/PAH)₅NAF LbL films by immersion in a 1 mg mL-1 insulin solution at pH 7.4 was 61.8 µg cm-2. The amount of insulin released from the LbL films was higher when immersed in insulin solutions at pH 2.0 and pH 9.0 than at pH 7.4. Therefore, NAF-polycations could be employed as insulin delivery LbL films under mild conditions and as an insulin release control system according to pH change.
Collapse
Affiliation(s)
- Kentaro Yoshida
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Katsuhiko Sato
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Tetsuya Ono
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Takenori Dairaku
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| | - Yoshitomo Kashiwagi
- School of Pharmaceutical Sciences, Ohu University, 31-1 Misumido, Tomita-machi, Koriyama, Fukushima 963-8611, Japan.
| |
Collapse
|
10
|
Ono T, Sato K, Shimizu S, Yoshida K, Dairaku T, Suzuki Y, Kashiwagi Y. Electrocatalytic Oxidation of Carbohydrates Mediated by Nitroxyl Radical-modified Electrodes in Aqueous Solution. ELECTROANAL 2017. [DOI: 10.1002/elan.201700545] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tetsuya Ono
- School of Pharmaceutical Sciences; Ohu University; 31-1 Misumido, Tomita-machi, Koriyama Fukushima 963-8611 Japan
| | - Katsuhiko Sato
- Graduate School of Pharmaceutical Sciences; Tohoku University, Aramaki, Aoba-ku; Sendai 980-8578 Japan
| | - Syunki Shimizu
- School of Pharmaceutical Sciences; Ohu University; 31-1 Misumido, Tomita-machi, Koriyama Fukushima 963-8611 Japan
| | - Kentaro Yoshida
- School of Pharmaceutical Sciences; Ohu University; 31-1 Misumido, Tomita-machi, Koriyama Fukushima 963-8611 Japan
| | - Takenori Dairaku
- School of Pharmaceutical Sciences; Ohu University; 31-1 Misumido, Tomita-machi, Koriyama Fukushima 963-8611 Japan
| | - Yasuhiro Suzuki
- School of Pharmaceutical Sciences; Ohu University; 31-1 Misumido, Tomita-machi, Koriyama Fukushima 963-8611 Japan
| | - Yoshitomo Kashiwagi
- School of Pharmaceutical Sciences; Ohu University; 31-1 Misumido, Tomita-machi, Koriyama Fukushima 963-8611 Japan
| |
Collapse
|
11
|
Dairaku T, Furuita K, Sato H, Šebera J, Nakashima K, Ono A, Sychrovský V, Kojima C, Tanaka Y. HgII/AgI-mediated base pairs and their NMR spectroscopic studies. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.03.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
12
|
Dairaku T, Furuita K, Sato H, Šebera J, Nakashima K, Kondo J, Yamanaka D, Kondo Y, Okamoto I, Ono A, Sychrovský V, Kojima C, Tanaka Y. Structure Determination of an AgI-Mediated Cytosine-Cytosine Base Pair within DNA Duplex in Solution with1H/15N/109Ag NMR Spectroscopy. Chemistry 2016; 22:13028-31. [DOI: 10.1002/chem.201603048] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Takenori Dairaku
- School of Pharmaceutical Sciences; Ohu University; 31-1 Misumido, Tomita-machi, Koriyama Fukushima 963-8611 Japan
- Graduate School of Pharmaceutical Sciences; Tohoku University; 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai Miyagi 980-8578 Japan
| | - Kyoko Furuita
- Institute for Protein Research; Osaka University; 3-2 Yamadaoka, Suita Osaka 565-0871 Japan
| | - Hajime Sato
- Application, Bruker BioSpin K. K.; 3-9 Moriya-cho, Kanagawa-ku, Yokohama Kanagawa 221-0022 Japan
| | - Jakub Šebera
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic, v.v.i.; Flemingovo náměstí 2 16610 Praha 6 Czech Republic
| | - Katsuyuki Nakashima
- Faculty of Phamaceutical Scienes; Tokushima Bunri University; Yamashiro-cho Tokushima 770-8514 Japan
| | - Jiro Kondo
- Department of Materials and Life Sciences; Faculty of Science and Technology, Sophia University; 7-1 Kioi-cho, Chiyoda-ku Tokyo 102-8554 Japan
| | - Daichi Yamanaka
- Graduate School of Pharmaceutical Sciences; Tohoku University; 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai Miyagi 980-8578 Japan
| | - Yoshinori Kondo
- Graduate School of Pharmaceutical Sciences; Tohoku University; 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai Miyagi 980-8578 Japan
| | - Itaru Okamoto
- Department of Material & Life Chemistry, Faculty of Engineering; Kanagawa University; 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama Kanagawa 221-8686 Japan
| | - Akira Ono
- Department of Material & Life Chemistry, Faculty of Engineering; Kanagawa University; 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama Kanagawa 221-8686 Japan
| | - Vladimír Sychrovský
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic, v.v.i.; Flemingovo náměstí 2 16610 Praha 6 Czech Republic
- Czech Technical University in Prague; Faculty of Electrical Engineering, Department of Electrotechnology; Technická 2 166 27 Praha 6 Czech Republic
| | - Chojiro Kojima
- Institute for Protein Research; Osaka University; 3-2 Yamadaoka, Suita Osaka 565-0871 Japan
| | - Yoshiyuki Tanaka
- Graduate School of Pharmaceutical Sciences; Tohoku University; 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai Miyagi 980-8578 Japan
- Faculty of Phamaceutical Scienes; Tokushima Bunri University; Yamashiro-cho Tokushima 770-8514 Japan
| |
Collapse
|
13
|
Dairaku T, Furuita K, Sato H, Kondo Y, Kojima C, Ono A, Tanaka Y. Exploring a DNA Sequence for the Three-Dimensional Structure Determination of a Silver(I)-Mediated C-C Base Pair in a DNA Duplex By (1)H NMR Spectroscopy. Nucleosides Nucleotides Nucleic Acids 2015; 34:877-900. [PMID: 26576739 DOI: 10.1080/15257770.2015.1088160] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Recently, we discovered novel silver(I)-mediated cytosine-cytosine base pair (C-Ag(I)-C) in DNA duplexes. To understand the properties of these base pairs, we searched for a DNA sequence that can be used in NMR structure determination. After extensive sequence optimizations, a non-symmetric 15-base-paired DNA duplex with a single C-Ag(I)-C base pair flanked by 14 A-T base pairs was selected. In spite of its challenging length for NMR measurements (30 independent residues) with small sequence variation, we could assign most non-exchangeable protons (254 out of 270) and imino protons for structure determination.
Collapse
Affiliation(s)
- Takenori Dairaku
- a Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Aoba-ku , Sendai , Miyagi , Japan
| | - Kyoko Furuita
- b Institute for Protein Research, Osaka University , Suita , Osaka , Japan
| | - Hajime Sato
- c Bruker BioSpin K.K. , Yokohama , Kanagawa , Japan
| | - Yoshinori Kondo
- a Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Aoba-ku , Sendai , Miyagi , Japan
| | - Chojiro Kojima
- b Institute for Protein Research, Osaka University , Suita , Osaka , Japan
| | - Akira Ono
- d Department of Material & Life Chemistry , Kangawa University, Kanagawa-ku , Yokohama , Kanagawa , Japan
| | - Yoshiyuki Tanaka
- a Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Aoba-ku , Sendai , Miyagi , Japan.,e Laboratory of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Tokushima Bunri University , Yamashiro-cho , Tokushima , Japan
| |
Collapse
|
14
|
Kondo J, Tada Y, Dairaku T, Saneyoshi H, Okamoto I, Tanaka Y, Ono A. High‐Resolution Crystal Structure of a Silver(I)–RNA Hybrid Duplex Containing Watson–Crick‐like CSilver(I)C Metallo‐Base Pairs. Angew Chem Int Ed Engl 2015; 54:13323-6. [DOI: 10.1002/anie.201507894] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Indexed: 01/08/2023]
Affiliation(s)
- Jiro Kondo
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7‐1 Kioi‐cho, Chiyoda‐ku, Tokyo 102‐8554 (Japan)
- Graduate School of Science and Technology, Sophia University, 7‐1 Kioi‐cho, Chiyoda‐ku, Tokyo 102‐8554 (Japan)
| | - Yoshinari Tada
- Graduate School of Science and Technology, Sophia University, 7‐1 Kioi‐cho, Chiyoda‐ku, Tokyo 102‐8554 (Japan)
| | - Takenori Dairaku
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6‐3 Aza‐Aoba, Aramaki, Aoba‐ku, Sendai 980‐8578 (Japan)
| | - Hisao Saneyoshi
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3‐27‐1 Rokkakubashi, Kanagawa‐ku, Yokohama 221‐8686 (Japan)
| | - Itaru Okamoto
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3‐27‐1 Rokkakubashi, Kanagawa‐ku, Yokohama 221‐8686 (Japan)
| | - Yoshiyuki Tanaka
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6‐3 Aza‐Aoba, Aramaki, Aoba‐ku, Sendai 980‐8578 (Japan)
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro‐cho, 770‐8514 Tokushima (Japan)
| | - Akira Ono
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3‐27‐1 Rokkakubashi, Kanagawa‐ku, Yokohama 221‐8686 (Japan)
| |
Collapse
|
15
|
Kondo J, Tada Y, Dairaku T, Saneyoshi H, Okamoto I, Tanaka Y, Ono A. High‐Resolution Crystal Structure of a Silver(I)–RNA Hybrid Duplex Containing Watson–Crick‐like CSilver(I)C Metallo‐Base Pairs. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507894] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Jiro Kondo
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7‐1 Kioi‐cho, Chiyoda‐ku, Tokyo 102‐8554 (Japan)
- Graduate School of Science and Technology, Sophia University, 7‐1 Kioi‐cho, Chiyoda‐ku, Tokyo 102‐8554 (Japan)
| | - Yoshinari Tada
- Graduate School of Science and Technology, Sophia University, 7‐1 Kioi‐cho, Chiyoda‐ku, Tokyo 102‐8554 (Japan)
| | - Takenori Dairaku
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6‐3 Aza‐Aoba, Aramaki, Aoba‐ku, Sendai 980‐8578 (Japan)
| | - Hisao Saneyoshi
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3‐27‐1 Rokkakubashi, Kanagawa‐ku, Yokohama 221‐8686 (Japan)
| | - Itaru Okamoto
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3‐27‐1 Rokkakubashi, Kanagawa‐ku, Yokohama 221‐8686 (Japan)
| | - Yoshiyuki Tanaka
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6‐3 Aza‐Aoba, Aramaki, Aoba‐ku, Sendai 980‐8578 (Japan)
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro‐cho, 770‐8514 Tokushima (Japan)
| | - Akira Ono
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3‐27‐1 Rokkakubashi, Kanagawa‐ku, Yokohama 221‐8686 (Japan)
| |
Collapse
|
16
|
Kuriyama M, Haruta K, Dairaku T, Kawamura T, Kikkawa S, Inamoto K, Tsukamoto H, Kondo Y, Torigoe H, Okamoto I, Ono A, Morita EH, Tanaka Y. Hg2+-trapping beads: Hg2+-specific recognition through thymine-Hg(II)-thymine base pairing. Chem Pharm Bull (Tokyo) 2015; 62:709-12. [PMID: 24990507 DOI: 10.1248/cpb.c13-00918] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mercury pollution poses a severe threat to human health. To remove Hg(2+) from contaminated water, we synthesized Hg(2+)-trapping beads that include oligo-thymidine functionalities that can form thymine-Hg(II)-thymine base pairs on the solid support. The beads can selectively trap Hg(2+) even in the presence of other metal cations. More interestingly, Hg(2+)-trapping efficiency was higher in the presence of the co-existing cations. Thus, the developed Hg(2+)-trapping beads can capture Hg(2+) without affecting the mineral balance of water so much. The Hg(2+)-trapping beads presented here show promise for removing Hg(2+) from environmental water.
Collapse
|
17
|
Tanaka Y, Kondo J, Sychrovský V, Šebera J, Dairaku T, Saneyoshi H, Urata H, Torigoe H, Ono A. Structures, physicochemical properties, and applications of T–HgII–T, C–AgI–C, and other metallo-base-pairs. Chem Commun (Camb) 2015; 51:17343-60. [DOI: 10.1039/c5cc02693h] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In this feature article, recent progress and future perspectives of metal-mediated base-pairs such as T–Hg(ii)–T and C–Ag(i)–C are presented.
Collapse
Affiliation(s)
- Yoshiyuki Tanaka
- Faculty of Pharmaceutical Sciences
- Tokushima Bunri University
- Tokushima
- Japan
- Graduate School of Pharmaceutical Sciences
| | - Jiro Kondo
- Department of Materials and Life Sciences
- Faculty of Science and Technology
- Sophia University
- Chiyoda-ku
- Japan
| | - Vladimír Sychrovský
- Institute of Organic Chemistry and Biochemistry
- Academy of Sciences of the Czech Republic
- Praha 6
- Czech Republic
| | - Jakub Šebera
- Institute of Organic Chemistry and Biochemistry
- Academy of Sciences of the Czech Republic
- Praha 6
- Czech Republic
- Institute of Physics
| | - Takenori Dairaku
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai
- Japan
| | - Hisao Saneyoshi
- Department of Material & Life Chemistry
- Kanagawa University
- Yokohama
- Japan
| | - Hidehito Urata
- Osaka University of Pharmaceutical Sciences
- Takatsuki
- Japan
| | - Hidetaka Torigoe
- Department of Applied Chemistry
- Faculty of Science
- Tokyo University of Science
- Shinjuku-ku
- Japan
| | - Akira Ono
- Department of Material & Life Chemistry
- Kanagawa University
- Yokohama
- Japan
| |
Collapse
|
18
|
Dairaku T, Furuita K, Sato H, Šebera J, Yamanaka D, Otaki H, Kikkawa S, Kondo Y, Katahira R, Matthias Bickelhaupt F, Fonseca Guerra C, Ono A, Sychrovský V, Kojima C, Tanaka Y. Direct detection of the mercury–nitrogen bond in the thymine–HgII–thymine base-pair with 199Hg NMR spectroscopy. Chem Commun (Camb) 2015; 51:8488-91. [DOI: 10.1039/c5cc02423d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
One-bond 199Hg–15N J-coupling.
Collapse
|
19
|
Yamaguchi H, Šebera J, Kondo J, Oda S, Komuro T, Kawamura T, Dairaku T, Kondo Y, Okamoto I, Ono A, Burda JV, Kojima C, Sychrovský V, Tanaka Y. The structure of metallo-DNA with consecutive thymine-HgII-thymine base pairs explains positive entropy for the metallo base pair formation. Nucleic Acids Res 2014; 42:4094-9. [PMID: 24371287 PMCID: PMC3973346 DOI: 10.1093/nar/gkt1344] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 12/03/2013] [Accepted: 12/03/2013] [Indexed: 12/16/2022] Open
Abstract
We have determined the three-dimensional (3D) structure of DNA duplex that includes tandem Hg(II)-mediated T-T base pairs (thymine-Hg(II)-thymine, T-Hg(II)-T) with NMR spectroscopy in solution. This is the first 3D structure of metallo-DNA (covalently metallated DNA) composed exclusively of 'NATURAL' bases. The T-Hg(II)-T base pairs whose chemical structure was determined with the (15)N NMR spectroscopy were well accommodated in a B-form double helix, mimicking normal Watson-Crick base pairs. The Hg atoms aligned along DNA helical axis were shielded from the bulk water. The complete dehydration of Hg atoms inside DNA explained the positive reaction entropy (ΔS) for the T-Hg(II)-T base pair formation. The positive ΔS value arises owing to the Hg(II) dehydration, which was approved with the 3D structure. The 3D structure explained extraordinary affinity of thymine towards Hg(II) and revealed arrangement of T-Hg(II)-T base pairs in metallo-DNA.
Collapse
Affiliation(s)
- Hiroshi Yamaguchi
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Jakub Šebera
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Jiro Kondo
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shuji Oda
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Tomoyuki Komuro
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takuya Kawamura
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takenori Dairaku
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoshinori Kondo
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Itaru Okamoto
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Akira Ono
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Jaroslav V. Burda
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Chojiro Kojima
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Vladimír Sychrovský
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoshiyuki Tanaka
- Laboratory of Molecular Transformation, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 166 10, Praha 6, Czech Republic, Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyoda-ku, Tokyo 102-8554, Japan, Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama, Kanagawa 221-8686 Japan, Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2, Czech Republic and Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| |
Collapse
|
20
|
Dairaku T, Iwamoto T, Nishimura M, Endo M, Ohashi T, Eto Y. A practical fluorometric assay method to measure lysosomal acid lipase activity in dried blood spots for the screening of cholesteryl ester storage disease and Wolman disease. Mol Genet Metab 2014; 111:193-6. [PMID: 24295952 DOI: 10.1016/j.ymgme.2013.11.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Revised: 11/10/2013] [Accepted: 11/10/2013] [Indexed: 12/20/2022]
Abstract
Fluorometric measurements of 4-methylumbelliferone (4-MU) are generally used to screen lysosomal storage diseases (LSDs) using dried blood spots (DBSs). However, in DBS, it is difficult to measure lysosomal acid lipase (LAL) activity due to the influence of other lipases in whole blood. Recently, Hamilton used a fluorometric enzyme assay with 4-MU derivatives to measure the LAL activity in DBS. This method requires mercury chloride as stopping reagent, and the fluorescence intensity of 4-MU was measured at an acidic pH. We report a revised method to measure the LAL activity without using toxic mercury chloride and to measure the fluorescence intensity of 4-MU at a basic pH. For this measurement, we established a more practical method that does not require mercury chloride. The LAL activity in DBS was measured in 51 normal controls, seven obligate carriers and seven patients with CESD. The average LAL activities ± SD in the DBS from the normal, obligate carriers and CESD patients were 0.68 ± 0.2 (range: 0.3-1.08), 0.21 ± 0.1 (range: 0.11-0.41) and 0.02 ± 0.02 (range: 0-0.06) nmol/punch/h, respectively. There was a significant difference between the normal and the CESD. Our method does not require toxic mercury chloride and is an appropriate revised enzyme assay using DBS for screening patients with CESD.
Collapse
Affiliation(s)
- Takenori Dairaku
- Advanced Clinical Research Center, Southern TOHOKU Research Institute for Neuroscience, Fukushima, Japan
| | - Takeo Iwamoto
- Division of Biochemistry, Core Research Facilities, The Jikei University School of Medicine, Tokyo, Japan
| | - Minami Nishimura
- Advanced Clinical Research Center, Southern TOHOKU Research Institute for Neuroscience, Fukushima, Japan
| | - Masahiro Endo
- Advanced Clinical Research Center, Southern TOHOKU Research Institute for Neuroscience, Fukushima, Japan
| | - Toya Ohashi
- Department of Pediatrics, The Jikei University School of Medicine, Tokyo, Japan; Department of Gene Therapy, The Jikei University School of Medicine, Tokyo, Japan
| | - Yoshikatu Eto
- Advanced Clinical Research Center, Southern TOHOKU Research Institute for Neuroscience, Fukushima, Japan.
| |
Collapse
|
21
|
Torigoe H, Okamoto I, Dairaku T, Tanaka Y, Ono A, Kozasa T. Thermodynamic and structural properties of the specific binding between Ag+ ion and C:C mismatched base pair in duplex DNA to form C–Ag–C metal-mediated base pair. Biochimie 2012; 94:2431-40. [DOI: 10.1016/j.biochi.2012.06.024] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2011] [Accepted: 06/22/2012] [Indexed: 11/15/2022]
|
22
|
Uchiyama T, Miura T, Takeuchi H, Dairaku T, Komuro T, Kawamura T, Kondo Y, Benda L, Sychrovský V, Bouř P, Okamoto I, Ono A, Tanaka Y. Raman spectroscopic detection of the T-Hg II-T base pair and the ionic characteristics of mercury. Nucleic Acids Res 2012; 40:5766-74. [PMID: 22383582 PMCID: PMC3384328 DOI: 10.1093/nar/gks208] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 02/15/2012] [Accepted: 02/16/2012] [Indexed: 11/30/2022] Open
Abstract
Developing applications for metal-mediated base pairs (metallo-base-pair) has recently become a high-priority area in nucleic acid research, and physicochemical analyses are important for designing and fine-tuning molecular devices using metallo-base-pairs. In this study, we characterized the Hg(II)-mediated T-T (T-Hg(II)-T) base pair by Raman spectroscopy, which revealed the unique physical and chemical properties of Hg(II). A characteristic Raman marker band at 1586 cm(-1) was observed and assigned to the C4=O4 stretching mode. We confirmed the assignment by the isotopic shift ((18)O-labeling at O4) and density functional theory (DFT) calculations. The unusually low wavenumber of the C4=O4 stretching suggested that the bond order of the C4=O4 bond reduced from its canonical value. This reduction of the bond order can be explained if the enolate-like structure (N3=C4-O4(-)) is involved as a resonance contributor in the thymine ring of the T-Hg(II)-T pair. This resonance includes the N-Hg(II)-bonded state (Hg(II)-N3-C4=O4) and the N-Hg(II)-dissociated state (Hg(II+) N3=C4-O4(-)), and the latter contributor reduced the bond order of N-Hg(II). Consequently, the Hg(II) nucleus in the T-Hg(II)-T pair exhibited a cationic character. Natural bond orbital (NBO) analysis supports the interpretations of the Raman experiments.
Collapse
Affiliation(s)
- Tomomi Uchiyama
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| | - Takashi Miura
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| | - Hideo Takeuchi
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| | - Takenori Dairaku
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| | - Tomoyuki Komuro
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| | - Takuya Kawamura
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| | - Yoshinori Kondo
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| | - Ladislav Benda
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| | - Vladimír Sychrovský
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| | - Petr Bouř
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| | - Itaru Okamoto
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| | - Akira Ono
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| | - Yoshiyuki Tanaka
- Laboratory of Molecular Transformation, Laboratory of Bio-Structural Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan, Department of Molecular Spectroscopy, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610, Praha 6, Czech Republic and Department of Material and Life Chemistry, Faculty of Engineering, Kangawa University, 3-27-1 Rokkakubashi, Kanagawa, Yokohama, Kanagawa-ken 221-8686, Japan
| |
Collapse
|