1
|
Matsuda Y, Shikida N, Hatada N, Yamada K, Seki T, Nakahara Y, Endo Y, Shimbo K, Takahashi K, Nakayama A, Mendelsohn BA, Fujii T, Okuzumi T, Hirasawa S. AJICAP-M: Traceless Affinity Peptide Mediated Conjugation Technology for Site-Selective Antibody-Drug Conjugate Synthesis. Org Lett 2024. [PMID: 38639400 DOI: 10.1021/acs.orglett.4c00878] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
A traceless site-selective conjugation method, "AJICAP-M", was developed for native antibodies at sites using Fc-affinity peptides, focusing on Lys248 or Lys288. It produces antibody-drug conjugates (ADCs) with consistent drug-to-antibody ratios, enhanced stability, and simplified manufacturing. Comparative in vivo assessment demonstrated AJICAP-M's superior stability over traditional ADCs. This technology has been successfully applied to continuous-flow manufacturing, marking the first achievement in site-selective ADC production. This manuscript outlines AJICAP-M's methodology and its effectiveness in ADC production.
Collapse
Affiliation(s)
- Yutaka Matsuda
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
- Ajinomoto Bio-Pharma Services, 11040 Roselle Street, San Diego, California 92121, United States
| | - Natsuki Shikida
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Noriko Hatada
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Kei Yamada
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Takuya Seki
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Yuichi Nakahara
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Yuta Endo
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Kazutaka Shimbo
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Kazutoshi Takahashi
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Akira Nakayama
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Brian A Mendelsohn
- Ajinomoto Bio-Pharma Services, 11040 Roselle Street, San Diego, California 92121, United States
| | - Tomohiro Fujii
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Tatsuya Okuzumi
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Shigeo Hirasawa
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| |
Collapse
|
2
|
Zhu J, Muraoka K, Ohnishi T, Yanaba Y, Ogura M, Nakayama A, Wakihara T, Liu Z, Okubo T. Synthesis and Structural Analysis of High-Silica ERI Zeolite with Spatially-Biased Al Distribution as a Promising NH 3-SCR Catalyst. Adv Sci (Weinh) 2024; 11:e2307674. [PMID: 38308139 PMCID: PMC11005726 DOI: 10.1002/advs.202307674] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 01/05/2024] [Indexed: 02/04/2024]
Abstract
Erionite (ERI) zeolite has recently attracted considerable attention for its application prospect in the selective catalytic reduction of NOx with NH3 (NH3-SCR), provided that the high-silica (Si/Al > 5.5) analog with improved hydrothermal stability can be facilely synthesized. In this work, ERI zeolites with different Si/Al ratios (4.6, 6.4, and 9.1) are synthesized through an ultrafast route, and in particular, a high-silica ERI zeolite with a Si/Al ratio of 9.1 is obtained by using faujasite (FAU) as a starting material. The solid-state 29Si MAS NMR spectroscopic study in combination with a computational simulation allows for figuring out the atomic configurations of the Al species in the three ERI zeolites. It is revealed that the ERI zeolite with the highest Si/Al ratio (ERI-9.1, where the number indicates the Si/Al ratio) exhibits a biased Al occupancy at T1 site, which is possibly due to the presence of a higher fraction of the residual potassium cations in the can cages. In contrast, the Al siting in ERI-4.6 and ERI-6.4 proves to be relatively random.
Collapse
Affiliation(s)
- Jie Zhu
- Department of Chemical System EngineeringThe University of Tokyo7‐3‐1 HongoBunkyo‐kuTokyo113‐8656Japan
| | - Koki Muraoka
- Department of Chemical System EngineeringThe University of Tokyo7‐3‐1 HongoBunkyo‐kuTokyo113‐8656Japan
| | - Takeshi Ohnishi
- Institute of Industrial ScienceThe University of Tokyo4‐6‐1 KomabaMeguro‐kuTokyo153‐8505Japan
| | - Yutaka Yanaba
- Institute of Industrial ScienceThe University of Tokyo4‐6‐1 KomabaMeguro‐kuTokyo153‐8505Japan
| | - Masaru Ogura
- Institute of Industrial ScienceThe University of Tokyo4‐6‐1 KomabaMeguro‐kuTokyo153‐8505Japan
| | - Akira Nakayama
- Department of Chemical System EngineeringThe University of Tokyo7‐3‐1 HongoBunkyo‐kuTokyo113‐8656Japan
| | - Toru Wakihara
- Department of Chemical System EngineeringThe University of Tokyo7‐3‐1 HongoBunkyo‐kuTokyo113‐8656Japan
- Institute of Engineering InnovationThe University of Tokyo2‐11‐16 YayoiBunkyo‐kuTokyo113‐8656Japan
| | - Zhendong Liu
- Department of Chemical System EngineeringThe University of Tokyo7‐3‐1 HongoBunkyo‐kuTokyo113‐8656Japan
- Institute of Engineering InnovationThe University of Tokyo2‐11‐16 YayoiBunkyo‐kuTokyo113‐8656Japan
- State Key Laboratory of Chemical EngineeringDepartment of Chemical EngineeringTsinghua UniversityHaidian DistrictBeijing100084China
| | - Tatsuya Okubo
- Department of Chemical System EngineeringThe University of Tokyo7‐3‐1 HongoBunkyo‐kuTokyo113‐8656Japan
| |
Collapse
|
3
|
Kamiguchi S, Asakura K, Shibayama T, Yokaichiya T, Ikeda T, Nakayama A, Shimizu KI, Hou Z. Catalytic ammonia synthesis on HY-zeolite-supported angstrom-size molybdenum cluster. Chem Sci 2024; 15:2914-2922. [PMID: 38404367 PMCID: PMC10882513 DOI: 10.1039/d3sc05447k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 12/15/2023] [Indexed: 02/27/2024] Open
Abstract
The development of new catalysts with high N2 activation ability is an effective approach for low-temperature ammonia synthesis. Herein, we report a novel angstrom-size molybdenum metal cluster catalyst for efficient ammonia synthesis. This catalyst is prepared by the impregnation of a molybdenum halide cluster complex with an octahedral Mo6 metal core on HY zeolite, followed by the removal of all the halide ligands by activation with hydrogen. In this activation, the size of the Mo6 cluster (ca. 7 Å) is almost retained. The resulting angstrom-size cluster shows catalytic activity for ammonia synthesis from N2 and H2, and the reaction proceeds continuously even at 200 °C under 5.0 MPa. DFT calculations suggest that N[triple bond, length as m-dash]N bond cleavage is promoted by the cooperation of the multiple molybdenum sites.
Collapse
Affiliation(s)
- Satoshi Kamiguchi
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science 2-1 Hirosawa, Wako Saitama 351-0198 Japan
- Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research 2-1 Hirosawa, Wako Saitama 351-0198 Japan
| | - Kiyotaka Asakura
- Institute for Catalysis, Hokkaido University Sapporo 001-0021 Japan
| | - Tamaki Shibayama
- Center for Advanced Research of Energy Conversion Materials, Hokkaido University Sapporo 060-8628 Japan
| | - Tomoko Yokaichiya
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo Tokyo 113-8656 Japan
| | - Tatsushi Ikeda
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo Tokyo 113-8656 Japan
| | - Akira Nakayama
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo Tokyo 113-8656 Japan
| | - Ken-Ichi Shimizu
- Institute for Catalysis, Hokkaido University Sapporo 001-0021 Japan
| | - Zhaomin Hou
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science 2-1 Hirosawa, Wako Saitama 351-0198 Japan
- Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research 2-1 Hirosawa, Wako Saitama 351-0198 Japan
| |
Collapse
|
4
|
Sun W, Li P, Yabushita M, Nakagawa Y, Wang Y, Nakayama A, Tomishige K. Comparative Study between 2-Furonitrile and 2-Cyanopyridine as Dehydrants in Direct Synthesis of Dialkyl Carbonates from CO 2 and Alcohols over Cerium Oxide Catalyst. ChemSusChem 2023; 16:e202300768. [PMID: 37639290 DOI: 10.1002/cssc.202300768] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/28/2023] [Accepted: 08/28/2023] [Indexed: 08/29/2023]
Abstract
The shift of equilibrium by removing water with nitrile dehydrants is crucial for CeO2 -catalyzed synthesis of dialkyl carbonates from CO2 and alcohols. Two nitriles - 2-cyanopyridine and 2-furonitrile - were previously found as effective dehydrants, yet their detailed comparison as well as exploration of potential of 2-furonitrile remain insufficient. Herein, the performance of 2-cyanopyridine and 2-furonitrile was compared in the synthesis of various dialkyl carbonates. 2-furonitrile was found to be superior to 2-cyanopyridine in the synthesis of dialkyl carbonates from CO2 and bulky or long-chain (≥C3) alcohols. Namely, the yield of diisopropyl carbonate (up to 50 %) achieved using CeO2 and 2-furonitrile is comparable to or even higher than previously reported ones. Meanwhile, 2-cyanopyridine acted as a better dehydrant than 2-furonitrile in the synthesis of dimethyl carbonate and diethyl carbonate. The adsorption experiments and density functional theory calculations have indicated that the better performance of 2-furonitrile compared to 2-cyanopyridine in the synthesis of dialkyl carbonates from bulky or long-chain alcohols is due to the weaker interaction of 2-furonitrile with the CeO2 surface. Such weak interaction of 2-furonitrile offers a larger reaction field on the catalyst surface for both CO2 and alcohols.
Collapse
Affiliation(s)
- Wen Sun
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, 980-8579, Sendai, Miyagi, Japan
- School of Chemical Engineering Northwest University, 710069, Xi'an, Shaanxi, China
| | - Peilang Li
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, 980-8579, Sendai, Miyagi, Japan
| | - Mizuho Yabushita
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, 980-8579, Sendai, Miyagi, Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, 980-8579, Sendai, Miyagi, Japan
| | - Yuqi Wang
- School of Chemical Engineering Northwest University, 710069, Xi'an, Shaanxi, China
| | - Akira Nakayama
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8656, Tokyo, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, 980-8579, Sendai, Miyagi, Japan
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, 980-8577, Sendai, Miyagi, Japan
| |
Collapse
|
5
|
Oishi K, Muraoka K, Nakayama A. Analysis of Al site-directing ability of organic structure-directing agents in FER and CHA zeolites: a computational exploration of energetic preferences. Chem Commun (Camb) 2023. [PMID: 37376997 DOI: 10.1039/d3cc01779f] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
This study explores the control of Al location in zeolites by organic structure-directing agents (OSDAs) using atomistic simulations. We examine several zeolite-OSDA complexes to quantify the Al site-directing ability. The results show that OSDAs induce different energetic preferences to direct Al at certain locations. In particular, these effects can be enhanced by OSDAs with N-H moieties. Our findings will be useful for the development of novel OSDAs that can modulate Al site-directing properties.
Collapse
Affiliation(s)
- Kota Oishi
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Koki Muraoka
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Akira Nakayama
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| |
Collapse
|
6
|
Fujii T, Matsuda Y, Seki T, Shikida N, Iwai Y, Ooba Y, Takahashi K, Isokawa M, Kawaguchi S, Hatada N, Watanabe T, Takasugi R, Nakayama A, Shimbo K, Mendelsohn BA, Okuzumi T, Yamada K. AJICAP Second Generation: Improved Chemical Site-Specific Conjugation Technology for Antibody-Drug Conjugate Production. Bioconjug Chem 2023. [PMID: 36894324 PMCID: PMC10119932 DOI: 10.1021/acs.bioconjchem.3c00040] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
The site-directed chemical conjugation of antibodies remains an area of great interest and active efforts within the antibody-drug conjugate (ADC) community. We previously reported a unique site modification using a class of immunoglobulin-G (IgG) Fc-affinity reagents to establish a versatile, streamlined, and site-selective conjugation of native antibodies to enhance the therapeutic index of the resultant ADCs. This methodology, termed "AJICAP", successfully modified Lys248 of native antibodies to produce site-specific ADC with a wider therapeutic index than the Food and Drug Administration-approved ADC, Kadcyla. However, the long reaction sequences, including the reduction-oxidation (redox) treatment, increased the aggregation level. In this manuscript, we aimed to present an updated Fc-affinity-mediated site-specific conjugation technology named "AJICAP second generation" without redox treatment utilizing a "one-pot" antibody modification reaction. The stability of Fc affinity reagents was improved owing to structural optimization, enabling the production of various ADCs without aggregation. In addition to Lys248 conjugation, Lys288 conjugated ADCs with homogeneous drug-to-antibody ratio of 2 were produced using different Fc affinity peptide reagent possessing a proper spacer linkage. These two conjugation technologies were used to produce over 20 ADCs from several combinations of antibodies and drug linkers. The in vivo profile of Lys248 and Lys288 conjugated ADCs was also compared. Furthermore, nontraditional ADC production, such as antibody-protein conjugates and antibody-oligonucleotide conjugates, were achieved. These results strongly indicate that this Fc affinity conjugation approach is a promising strategy for manufacturing site-specific antibody conjugates without antibody engineering.
Collapse
Affiliation(s)
- Tomohiro Fujii
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Yutaka Matsuda
- Ajinomoto Bio-Pharma Services, 11040 Roselle Street, San Diego, California 92121, United States
| | - Takuya Seki
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Natsuki Shikida
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Yusuke Iwai
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Yuri Ooba
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Kazutoshi Takahashi
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Muneki Isokawa
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Sayaka Kawaguchi
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Noriko Hatada
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Tomohiro Watanabe
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Rika Takasugi
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Akira Nakayama
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Kazutaka Shimbo
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Brian A Mendelsohn
- Ajinomoto Bio-Pharma Services, 11040 Roselle Street, San Diego, California 92121, United States
| | - Tatsuya Okuzumi
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Kei Yamada
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| |
Collapse
|
7
|
Fukuda S, Kobayashi M, Chen W, Fan B, Liu F, Afari J, Dhanji S, Ghassemzadeh S, Shah A, Schmeusser B, Greenwald R, Medline A, Kamal F, Ali A, Nakayama A, Meagher M, Patil D, Tanaka H, Saito K, Derweesh I, Master V, Fujii Y. Impact of preoperative C-reactive protein level on oncological outcomes after nephrectomy in patients with high-risk renal cell carcinoma: An analysis from the International Marker Consortium for Renal Cancer (INMARC) cohort. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00507-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
|
8
|
Fujii R, Yabushita M, Asada D, Tamura M, Nakagawa Y, Takahashi A, Nakayama A, Tomishige K. Continuous Flow Synthesis of 2-Imidazolidinone from Ethylenediamine Carbamate in Ethylenediamine Solvent over the CeO 2 Catalyst: Insights into Catalysis and Deactivation. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Ryotaro Fujii
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi980-8579, Japan
- Organic Research Laboratory, Tosoh Corporation, Shunan, Yamaguchi746-8501, Japan
| | - Mizuho Yabushita
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi980-8579, Japan
| | - Daiki Asada
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo113-8656, Japan
| | - Masazumi Tamura
- Department of Chemistry and Bioengineering, School of Engineering, Osaka Metropolitan University, Osaka558-8585, Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi980-8579, Japan
| | - Atsushi Takahashi
- Department of Chemical Engineering, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Sendai, Miyagi980-8579, Japan
| | - Akira Nakayama
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo113-8656, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi980-8579, Japan
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi980-8577, Japan
| |
Collapse
|
9
|
Seki T, Yamada K, Ooba Y, Fujii T, Narita T, Nakayama A, Kitahara Y, Mendelsohn BA, Matsuda Y, Okuzumi T. Biological Evaluation of Maytansinoid-Based Site-Specific Antibody-Drug Conjugate Produced by Fully Chemical Conjugation Approach: AJICAP®. Front Biosci (Landmark Ed) 2022; 27:234. [PMID: 36042175 DOI: 10.31083/j.fbl2708234] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/04/2022] [Accepted: 07/21/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Trastuzumab-emtansine (T-DM1, commercial name: Kadcyla) is well-known antibody-drug conjugate (ADC) and was first approved for human epidermal growth factor receptor 2 (HER2)-positive metastatic breast cancer. This molecular format consisting of trastuzumab and maytansinoid payload (emtansine) is very simple, however, T-DM1 has wide heterogeneity due to non-specific conjugation, lowering its therapeutic index (TI). METHODS To overcome this issue during the chemical modification of the random conjugation approach to generate T-DM1, we developed a novel chemical conjugation technology termed "AJICAP®" for modification of antibodies in site-specific manner by IgG Fc-affinity peptide based reagents. RESULTS In this study, we compared site-specific maytansinoid-based ADCs synthesized by AJICAP and T-DM1 in rat safety studies. The results indicated an increase in the maximum tolerated dose, demonstrating an expansion of the AJICAP-ADC therapeutic index compared with that of commercially available T-DM1. Gram scale preparation of this AJICAP-ADC and the initial stability study are also described. CONCLUSIONS Trastuzumab-AJICAP-maytansinoid produced by this unique chemical conjugation methodology showed higher stability and tolerability than commercially available T-DM1.
Collapse
Affiliation(s)
- Takuya Seki
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, 210-8681 Kanagawa, Japan
| | - Kei Yamada
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, 210-8681 Kanagawa, Japan
| | - Yuri Ooba
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, 210-8681 Kanagawa, Japan
| | - Tomohiro Fujii
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, 210-8681 Kanagawa, Japan
| | - Takahiro Narita
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, 210-8681 Kanagawa, Japan
| | - Akira Nakayama
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, 210-8681 Kanagawa, Japan
| | - Yoshiro Kitahara
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, 210-8681 Kanagawa, Japan
| | | | - Yutaka Matsuda
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, 210-8681 Kanagawa, Japan.,Ajinomoto Bio-Pharma Services, San Diego, CA 92121, USA
| | - Tatsuya Okuzumi
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, 210-8681 Kanagawa, Japan
| |
Collapse
|
10
|
Karakawa S, Smriga M, Arashida N, Nakayama A, Miyano H. Analytical Chemistry of Impurities in Amino Acids Used as Nutrients: Recommendations for Regulatory Risk Management. Nutrients 2022; 14:nu14142838. [PMID: 35889795 PMCID: PMC9319416 DOI: 10.3390/nu14142838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 06/14/2022] [Revised: 07/05/2022] [Accepted: 07/08/2022] [Indexed: 12/05/2022] Open
Abstract
Proteinogenic amino acids are natural nutrients ingested daily from standard foods. Commercially manufactured amino acids are added to a wide range of nutritional products, including dietary supplements and regular foods. Currently, the regulatory risk management of amino acids is conducted by means of setting daily maximum limits of intake. However, there have been no reported adverse effects of amino acid overdosing, while impurities in low-quality amino acids have been identified as causative agents in several health hazard events. This paper reviews the analytical chemistry of impurities in amino acids and highlights major variations in the purity of commercial products. Furthermore, it examines the international standards and global regulatory risk assessment of amino acids utilized in dietary supplements and foods, recommending (1) further research on analytical methods that can comprehensively separate impurities in amino acids, and (2) re-focusing on the regulatory risk management of amino acids to the analytical chemistry of impurities.
Collapse
Affiliation(s)
- Sachise Karakawa
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., Kawasaki 210-8681, Japan; (N.A.); (A.N.); (H.M.)
- Correspondence:
| | - Miro Smriga
- Quality Assurance Department, Ajinomoto Co., Inc., Tokyo 104-8315, Japan;
| | - Naoko Arashida
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., Kawasaki 210-8681, Japan; (N.A.); (A.N.); (H.M.)
| | - Akira Nakayama
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., Kawasaki 210-8681, Japan; (N.A.); (A.N.); (H.M.)
| | - Hiroshi Miyano
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., Kawasaki 210-8681, Japan; (N.A.); (A.N.); (H.M.)
| |
Collapse
|
11
|
Yamazaki J, Inoue I, Arakawa A, Karakawa S, Takahashi K, Nakayama A. Simultaneous quantification of oligo-nucleic acids and a ferritin nanocage by size-exclusion chromatography hyphenated to inductively coupled plasma mass spectrometry for developing drug delivery systems. Anal Methods 2022; 14:2219-2226. [PMID: 35616084 DOI: 10.1039/d2ay00068g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
An analytical methodology, which can quantify nucleic acids, ferritin nanocages, and their complexes in a single injection, was established by means of size-exclusion chromatography hyphenated with inductively coupled plasma mass spectrometry (SEC-ICP-MS). In this study, several oligo-nucleic acids and ferritin (a human-derived cage-shaped protein) were used as model compounds of nucleic acid drugs (NAD) and drug delivery system (DDS) carriers, respectively. A fraction based on the nucleic acid-ferritin complex was completely distinguished from one based on free nucleic acids by SEC separation. The nucleic acids and ferritin were quantified based on the number of phosphorus and sulfur atoms, respectively. The quantification was carried out by an external calibration method using a series of elemental standard solutions without preparing designated standard materials for each drug candidate. The analytical performance, including sensitivity and accuracy, was evaluated to be appropriate for evaluating the medicines already launched in the market. As demonstrated in the latter part of this study, the encapsulation mechanism is possibly regulated by not only the averaged molecular size of nucleic acids but also the surface charge related to the number of (deoxy-) ribonucleotides. We believe that the methodology presented in this study has the potential to accelerate the development of new modalities based on NAD-DDS to realize therapies in the future.
Collapse
Affiliation(s)
- Junko Yamazaki
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc, 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-8681, Japan.
| | - Ippei Inoue
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc, 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-8681, Japan.
| | - Akihiro Arakawa
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc, 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-8681, Japan.
| | - Sachise Karakawa
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc, 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-8681, Japan.
| | - Kazutoshi Takahashi
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc, 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-8681, Japan.
| | - Akira Nakayama
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc, 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-8681, Japan.
| |
Collapse
|
12
|
Yamaguchi K, Cao J, Betchaku M, Nakagawa Y, Tamura M, Nakayama A, Yabushita M, Tomishige K. Deoxydehydration of Biomass-Derived Polyols Over Silver-Modified Ceria-Supported Rhenium Catalyst with Molecular Hydrogen. ChemSusChem 2022; 15:e202102663. [PMID: 35261197 DOI: 10.1002/cssc.202102663] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/27/2022] [Indexed: 06/14/2023]
Abstract
Olefin production from polyols via deoxydehydration (DODH) was carried out over Ag-modified CeO2 -supported heterogeneous Re catalysts with H2 as a reducing agent. Both high DODH activity and low hydrogenation ability for C=C bonds were observed in the reaction of erythritol, giving a 1,3-butadiene yield of up to 90 % under "solvent-free" conditions. This catalyst is applicable to other substrates such as methyl glycosides (methyl α-fucopyranoside: 91 % yield of DODH product; methyl β-ribofuranoside: 88 % yield), which were difficult to be converted to the DODH products over the DODH catalysts reported previously. ReOx -Ag/CeO2 was reused 3 times without a decrease of activity or selectivity after calcination as regeneration. Although the transmission electron microscopy energy-dispersive X-ray spectroscopy and X-ray absorption fine structure analyses showed that Re species were highly dispersed and Ag was present as metal particles with various sizes from well-dispersed species (<1 nm) to around 5 nm particles, the catalysts prepared from size-controlled Ag nanoparticles showed similar performance, indicating that the catalytic performance is insensitive to the Ag particle size.
Collapse
Affiliation(s)
- Kosuke Yamaguchi
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Aoba 6-6-07, Aramaki, Aoba-ku, Sendai, Miyagi, 980-8579, Japan
| | - Ji Cao
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Aoba 6-6-07, Aramaki, Aoba-ku, Sendai, Miyagi, 980-8579, Japan
| | - Mii Betchaku
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Aoba 6-6-07, Aramaki, Aoba-ku, Sendai, Miyagi, 980-8579, Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Aoba 6-6-07, Aramaki, Aoba-ku, Sendai, Miyagi, 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, Aoba 468-1, Aramaki, Aoba-ku, Sendai, Miyagi, 980-0845, Japan
| | - Masazumi Tamura
- Research Center for Artificial Photosynthesis, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan
| | - Akira Nakayama
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Mizuho Yabushita
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Aoba 6-6-07, Aramaki, Aoba-ku, Sendai, Miyagi, 980-8579, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Aoba 6-6-07, Aramaki, Aoba-ku, Sendai, Miyagi, 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, Aoba 468-1, Aramaki, Aoba-ku, Sendai, Miyagi, 980-0845, Japan
| |
Collapse
|
13
|
Affiliation(s)
| | - Akira Nakayama
- Department of Chemical System Engineering, University of Tokyo, Japan
| |
Collapse
|
14
|
Karakawa S, Nakayama A, Ohtsuka N, Sato K, Smriga M. Detection of impurities in dietary supplements containing l-tryptophan. Amino Acids 2022; 54:835-839. [PMID: 35043227 PMCID: PMC9167196 DOI: 10.1007/s00726-022-03125-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 11/30/2021] [Accepted: 01/07/2022] [Indexed: 11/28/2022]
Abstract
Impurities in nine dietary supplements containing l-tryptophan were evaluated using an HPLC methodology. In five tested products, the total impurities were higher than the thresholds described in the Food Chemical Codex or implemented in the EU for pharmaceutical grade l-tryptophan. In addition, liquid chromatography–mass spectrometry was used to specifically test for the presence of 1,1′-ethylidenebis-l-tryptophan (EBT). None of the tested products contained detectable amounts of EBT. High amounts of unidentified impurities in some dietary supplements point to potential health risks.
Collapse
Affiliation(s)
- Sachise Karakawa
- International Council on Amino Acid Science (ICAAS), Avenue de Tervueren, 188A, 1150, Brussels, Belgium.
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-8681, Japan.
| | - Akira Nakayama
- International Council on Amino Acid Science (ICAAS), Avenue de Tervueren, 188A, 1150, Brussels, Belgium
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-8681, Japan
| | - Naoto Ohtsuka
- Shimadzu Techno-Research Inc., 3-19-2 Minamirokugo, Ohta-ku, Tokyo, 144-0045, Japan
| | - Katsuma Sato
- Shimadzu Techno-Research Inc., 3-19-2 Minamirokugo, Ohta-ku, Tokyo, 144-0045, Japan
| | - Miro Smriga
- International Council on Amino Acid Science (ICAAS), Avenue de Tervueren, 188A, 1150, Brussels, Belgium
| |
Collapse
|
15
|
Albrecht K, Hisamura E, Furukori M, Nakayama Y, Hosokai T, Nakao K, Ikebe H, Nakayama A. Thermally Activated Delayed Fluorescence of Carbazole-Benzophenone Dendrimer with Bulky Substituents. Polym Chem 2022. [DOI: 10.1039/d2py00255h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbazole dendrimers with benzophenone core and bulky terminal substituents were synthesized, and thermally-activated delayed fluorescence (TADF) property was investigated. The adamantane (Ad) substituted dendrimer showed green TADF emission with PLQY...
Collapse
|
16
|
Tamura M, Hayashigami N, Nakayama A, Nakagawa Y, Tomishige K. Heterogeneous Enantioselective Hydrogenation of Ketones by 2-Amino-2′-hydroxy-1,1′-binaphthyl-Modified CeO2-Supported Ir Nanoclusters. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masazumi Tamura
- Research Center for Artificial Photosynthesis, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Nao Hayashigami
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Akira Nakayama
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| |
Collapse
|
17
|
Matsuda Y, Seki T, Yamada K, Ooba Y, Takahashi K, Fujii T, Kawaguchi S, Narita T, Nakayama A, Kitahara Y, Mendelsohn BA, Okuzumi T. Chemical Site-Specific Conjugation Platform to Improve the Pharmacokinetics and Therapeutic Index of Antibody-Drug Conjugates. Mol Pharm 2021; 18:4058-4066. [PMID: 34579528 DOI: 10.1021/acs.molpharmaceut.1c00473] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
To overcome a lack of selectivity during the chemical modification of native non-engineered antibodies, we have developed a technology platform termed "AJICAP" for the site-specific chemical conjugation of antibodies through the use of a class of IgG Fc-affinity reagents. To date, a limited number of antibody-drug conjugates (ADCs) have been synthesized via this approach, and no toxicological study was reported. Herein, we describe the compatibility and robustness of AJICAP technology, which enabled the synthesis of a wide variety of ADCs. A stability assessment of a thiol-modified antibody synthesized by AJICAP technology indicated no appreciable increase in aggregation or decomposition upon prolonged storage, indicating that the unexpectedly stable thiol intermediate has a great potential intermediate for payload or linker screening or large-scale manufacturing. Payload conjugation with this stable thiol intermediate generated several AJICAP-ADCs. In vivo xenograft studies indicated that the AJICAP-ADCs displayed significant tumor inhibition comparable to benchmark ADC Kadcyla. Furthermore, a rat pharmacokinetic analysis and toxicology study indicated an increase in the maximum tolerated dose, demonstrating an expansion of the AJICAP-ADC therapeutic index, compared with stochastic conjugation technology. This is the first report of the therapeutic index estimation of site-specific ADCs produced by utilizing Fc affinity reagent conjugation. The described site-specific conjugation technology is a powerful platform to enable next-generation ADCs through reduced heterogeneity and enhanced therapeutic index.
Collapse
Affiliation(s)
- Yutaka Matsuda
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan.,Ajinomoto Bio-Pharma Services, 11040 Roselle Street, San Diego, California 92121, United States
| | - Takuya Seki
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Kei Yamada
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Yuri Ooba
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Kazutoshi Takahashi
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Tomohiro Fujii
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Sayaka Kawaguchi
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Takahiro Narita
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Akira Nakayama
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Yoshiro Kitahara
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| | - Brian A Mendelsohn
- Ajinomoto Bio-Pharma Services, 11040 Roselle Street, San Diego, California 92121, United States
| | - Tatsuya Okuzumi
- Ajinomoto Co., Inc., 1-1, Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Kanagawa 210-8681, Japan
| |
Collapse
|
18
|
Nakayama A, Kato M, Takatori Y, Matsuura N, Yahagi N. Gastrointestinal: A case of duodenal cancer with subepithelial lesion-like morphology. J Gastroenterol Hepatol 2021; 36:3001. [PMID: 33913193 DOI: 10.1111/jgh.15498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 03/16/2021] [Indexed: 12/09/2022]
Affiliation(s)
- A Nakayama
- Departments of Research and Development for Minimal Invasive Treatment, Cancer Center, Keio University, Tokyo, Japan
| | - M Kato
- Departments of Research and Development for Minimal Invasive Treatment, Cancer Center, Keio University, Tokyo, Japan.,Gastroenterology, Internal Medicine, Faculty of Medicine, Keio University, Tokyo, Japan
| | - Y Takatori
- Departments of Research and Development for Minimal Invasive Treatment, Cancer Center, Keio University, Tokyo, Japan
| | - N Matsuura
- Departments of Research and Development for Minimal Invasive Treatment, Cancer Center, Keio University, Tokyo, Japan
| | - N Yahagi
- Departments of Research and Development for Minimal Invasive Treatment, Cancer Center, Keio University, Tokyo, Japan
| |
Collapse
|
19
|
Li C, Nakagawa Y, Yabushita M, Nakayama A, Tomishige K. Guaiacol Hydrodeoxygenation over Iron–Ceria Catalysts with Platinum Single-Atom Alloy Clusters as a Promoter. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03539] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Congcong Li
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, 468-1, Aoba, Aramaki, Aoba-ku, Sendai 980-0845, Japan
| | - Mizuho Yabushita
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Akira Nakayama
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, 468-1, Aoba, Aramaki, Aoba-ku, Sendai 980-0845, Japan
| |
Collapse
|
20
|
Tamura M, Sagawa E, Nakayama A, Nakagawa Y, Tomishige K. Hydrogen Atom Abstraction by Heterogeneous–Homogeneous Hybrid Catalyst of CeO 2 and 2-Cyanopyridine via Redox of CeO 2 for C–H Bond Oxidation with Air. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03757] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Masazumi Tamura
- Research Center for Artificial Photosynthesis, Advanced Research Institute for Natural Science and Technology, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan
| | - Eiji Sagawa
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Akira Nakayama
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| |
Collapse
|
21
|
Bai JQ, Tamura M, Nakayama A, Nakagawa Y, Tomishige K. Comprehensive Study on Ni- or Ir-Based Alloy Catalysts in the Hydrogenation of Olefins and Mechanistic Insight. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04615] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Jia-qi Bai
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Masazumi Tamura
- Research Center for Artificial Photosynthesis, Advanced Research Institute for Natural Science and Technology, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan
| | - Akira Nakayama
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| |
Collapse
|
22
|
Affiliation(s)
- Congcong Li
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki,
Aoba-ku, Sendai 980-8579, Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki,
Aoba-ku, Sendai 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, 468-1, Aoba, Aramaki, Aoba-ku, Sendai 980-0845, Japan
| | - Masazumi Tamura
- Research Center for Artificial Photosynthesis, Advanced Research Institute for Natural Science and Technology, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - Akira Nakayama
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki,
Aoba-ku, Sendai 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, 468-1, Aoba, Aramaki, Aoba-ku, Sendai 980-0845, Japan
| |
Collapse
|
23
|
Nishikawa Y, Ohtsuka Y, Ogihara H, Rattanawan R, Gao M, Nakayama A, Hasegawa JY, Yamanaka I. Catalytic Mechanism of Liquid-Metal Indium for Direct Dehydrogenative Conversion of Methane to Higher Hydrocarbons. ACS Omega 2020; 5:28158-28167. [PMID: 33163798 PMCID: PMC7643202 DOI: 10.1021/acsomega.0c03827] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 10/12/2020] [Indexed: 06/11/2023]
Abstract
There is a great interest in direct conversion of methane to valuable chemicals. Recently, we reported that silica-supported liquid-metal indium catalysts (In/SiO2) were effective for direct dehydrogenative conversion of methane to higher hydrocarbons. However, the catalytic mechanism of liquid-metal indium has not been clear. Here, we show the catalytic mechanism of the In/SiO2 catalyst in terms of both experiments and calculations in detail. Kinetic studies clearly show that liquid-metal indium activates a C-H bond of methane and converts methane to ethane. The apparent activation energy of the In/SiO2 catalyst is 170 kJ mol-1, which is much lower than that of SiO2, 365 kJ mol-1. Temperature-programmed reactions in CH4, C2H6, and C2H4 and reactivity of C2H6 for the In/SiO2 catalyst indicate that indium selectively activates methane among hydrocarbons. In addition, density functional theory calculations and first-principles molecular dynamics calculations were performed to evaluate activation free energy for methane activation, its reverse reaction, CH3-CH3 coupling via Langmuir-Hinshelwood (LH) and Eley-Rideal mechanisms, and other side reactions. A qualitative level of interpretation is as follows. CH3-In and H-In species form after the activation of methane. The CH3-In species wander on liquid-metal indium surfaces and couple each other with ethane via the LH mechanism. The solubility of H species into the bulk phase of In is important to enhance the coupling of CH3-In species to C2H6 by decreasing the formation of CH4 though the coupling of CH3-In species and H-In species. Results of isotope experiments by combinations of CD4, CH4, D2, and H2 corresponded to the LH mechanism.
Collapse
Affiliation(s)
- Yuta Nishikawa
- Department
of Chemical Science and Engineering, School of Materials and Chemical
Technology, Tokyo Institute of Technology, Tokyo 152-8552, Japan
| | - Yuhki Ohtsuka
- Institute
for Catalysis, Hokkaido University, Hokkaido 001-0021, Japan
| | - Hitoshi Ogihara
- Graduate
School of Science and Engineering, Saitama
University, Saitama 338-8570, Japan
| | | | - Min Gao
- Institute
for Catalysis, Hokkaido University, Hokkaido 001-0021, Japan
| | - Akira Nakayama
- Graduate
School of Engineering, Department of Chemical System Engineering, University of Tokyo, Tokyo 113-8656, Japan
| | - Jun-ya Hasegawa
- Institute
for Catalysis, Hokkaido University, Hokkaido 001-0021, Japan
| | - Ichiro Yamanaka
- Department
of Chemical Science and Engineering, School of Materials and Chemical
Technology, Tokyo Institute of Technology, Tokyo 152-8552, Japan
| |
Collapse
|
24
|
Zhao L, Watanabe KJ, Nakatani N, Nakayama A, Xu X, Hasegawa JY. Extending nudged elastic band method to reaction pathways involving multiple spin states. J Chem Phys 2020; 153:134114. [PMID: 33032404 DOI: 10.1063/5.0021923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
There are diverse reactions including spin-state crossing, especially the reactions catalyzed by transition metal compounds. To figure out the mechanisms of such reactions, the discussion of minimum energy intersystem crossing (MEISC) points cannot be avoided. These points may be the bottleneck of the reaction or inversely accelerate the reactions by providing a better pathway. It is of great importance to reveal their role in the reactions by computationally locating the position of the MEISC points together with the reaction pathway. However, providing a proper initial guess for the structure of the MEISC point is not as easy as that of the transition state. In this work, we extended the nudged elastic band (NEB) method for multiple spin systems, which is named the multiple spin-state NEB method, and it is successfully applied to find the MEISC points while optimizing the reaction pathway. For more precisely locating the MEISC point, a revised approach was adopted. Meanwhile, our examples also suggest that special attention should be paid to the criterion to define an image optimized as the MEISC point.
Collapse
Affiliation(s)
- Liming Zhao
- Institute for Catalysis, Hokkaido University, N21 W10 Kita-ku, Sapporo 001-0021, Hokkaido, Japan
| | - K-Jiro Watanabe
- Institute for Catalysis, Hokkaido University, N21 W10 Kita-ku, Sapporo 001-0021, Hokkaido, Japan
| | - Naoki Nakatani
- Graduate School of Science and Engineering, Tokyo Metropolitan University, Minami-Osawa 1-1, Tokyo 192-0397, Japan
| | - Akira Nakayama
- Department of Chemical System Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Xin Xu
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Jun-Ya Hasegawa
- Institute for Catalysis, Hokkaido University, N21 W10 Kita-ku, Sapporo 001-0021, Hokkaido, Japan
| |
Collapse
|
25
|
Cao J, Tamura M, Hosaka R, Nakayama A, Hasegawa JY, Nakagawa Y, Tomishige K. Mechanistic Study on Deoxydehydration and Hydrogenation of Methyl Glycosides to Dideoxy Sugars over a ReO x–Pd/CeO 2 Catalyst. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02309] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ji Cao
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Masazumi Tamura
- Research Center for Artificial Photosynthesis, Advanced Research Institute for Natural Science and Technology, Osaka City University, Osaka 558-8585, Japan
| | - Ryu Hosaka
- Institute for Catalysis, Hokkaido University, Sapporo 001-0021, Japan
| | - Akira Nakayama
- Institute for Catalysis, Hokkaido University, Sapporo 001-0021, Japan
- Department of Chemical System Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Jun-ya Hasegawa
- Institute for Catalysis, Hokkaido University, Sapporo 001-0021, Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07, Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| |
Collapse
|
26
|
Nima NI, Salawu SO, Ferdows M, Shamshuddin MD, Alsenafi A, Nakayama A. Melting effect on non-Newtonian fluid flow in gyrotactic microorganism saturated non-darcy porous media with variable fluid properties. Appl Nanosci 2020. [DOI: 10.1007/s13204-020-01491-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
27
|
Nakayama A, Otani A, Inokuma T, Tsuji D, Mukaiyama H, Nakayama A, Itoh K, Otaka A, Tanino K, Namba K. Development of a 1,3a,6a-triazapentalene derivative as a compact and thiol-specific fluorescent labeling reagent. Commun Chem 2020; 3:6. [PMID: 36703318 PMCID: PMC9812263 DOI: 10.1038/s42004-019-0250-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 07/23/2019] [Accepted: 12/11/2019] [Indexed: 01/29/2023] Open
Abstract
For the fluorescence imaging of biologically active small compounds, the development of compact fluorophores that do not perturb bioactivity is required. Here we report a compact derivative of fluorescent 1,3a,6a-triazapentalenes, 2-isobutenylcarbonyl-1,3a,6a-triazapentalene (TAP-VK1), as a fluorescent labeling reagent. The reaction of TAP-VK1 with various aliphatic thiols proceeds smoothly to afford the corresponding 1,4-adducts in high yields, and nucleophiles other than thiols do not react. After the addition of thiol groups in dichloromethane, the emission maximum of TAP-VK1 shifts to a shorter wavelength and the fluorescence intensity is substantially increased. The utility of TAP-VK1 as a compact fluorescent labeling reagent is clearly demonstrated by the labeling of Captopril, which is a small molecular drug for hypertension. The successful imaging of Captopril, one of the most compact drugs, in this study demonstrates the usefulness of compact fluorophores for mechanistic studies.
Collapse
Affiliation(s)
- Atsushi Nakayama
- grid.267335.60000 0001 1092 3579Department of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505 Japan ,grid.267335.60000 0001 1092 3579Research Cluster on “Innovative Chemical Sensing”, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505 Japan
| | - Akira Otani
- grid.267335.60000 0001 1092 3579Department of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505 Japan
| | - Tsubasa Inokuma
- grid.267335.60000 0001 1092 3579Department of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505 Japan ,grid.267335.60000 0001 1092 3579Research Cluster on “Innovative Chemical Sensing”, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505 Japan
| | - Daisuke Tsuji
- grid.267335.60000 0001 1092 3579Department of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505 Japan
| | - Haruka Mukaiyama
- grid.267335.60000 0001 1092 3579Department of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505 Japan
| | - Akira Nakayama
- grid.26999.3d0000 0001 2151 536XDepartment of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Bunkyo-ku Tokyo, 113-8656 Japan
| | - Kohji Itoh
- grid.267335.60000 0001 1092 3579Department of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505 Japan
| | - Akira Otaka
- grid.267335.60000 0001 1092 3579Department of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505 Japan
| | - Keiji Tanino
- grid.39158.360000 0001 2173 7691Department of Chemistry, Faculty of Science, Hokkaido University, Kita-ku Sapporo, 060-0810 Japan
| | - Kosuke Namba
- grid.267335.60000 0001 1092 3579Department of Pharmaceutical Sciences, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505 Japan ,grid.267335.60000 0001 1092 3579Research Cluster on “Innovative Chemical Sensing”, Tokushima University, 1-78-1 Shomachi, Tokushima, 770-8505 Japan
| |
Collapse
|
28
|
Ruankaew N, Yoshida N, Watanabe Y, Nakayama A, Nakano H, Phongphanphanee S. Distinct ionic adsorption sites in defective Prussian blue: a 3D-RISM study. Phys Chem Chem Phys 2019; 21:22569-22576. [PMID: 31588931 DOI: 10.1039/c9cp04355a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ferric hexacyanoferrate (FeHCF) or Prussian blue (PB) exhibits selective alkali ion adsorption and has great potential for use in various applications. In the present work, alkali ion (Li+, Na+, K+, and Cs+) and water configurations in defective PB (d-PB) were studied by using the statistical mechanics of molecular liquids. The three-dimensional (3D) distribution functions of the ions and water were determined by solving the 3D-reference interaction site model (RISM) equation of systems of a unit lattice of d-PB in electrolyte solutions, i.e., LiCl, NaCl, KCl, and CsCl. The results show the difference in the ion-water configurations and distributions between small (Li+ and Na+) and large ions (K+ and Cs+). The adsorption sites of Li+ and Na+ are located off-center and lie on the diagonal axis. By contrast, the larger ions, K+ and Cs+, are adsorbed at the center of the unit cell. The degree of dehydration due to the adsorption of alkali ions indicates that there was no water exchange during Li+ and Na+ adsorption, whereas two and three water molecules were removed after adsorption of K+ or Cs+ in the unit cell.
Collapse
Affiliation(s)
- Nirun Ruankaew
- Department of Materials Science, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand. and Department of Chemistry, Graduate School of Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Norio Yoshida
- Department of Chemistry, Graduate School of Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Yoshihiro Watanabe
- Department of Chemistry, Graduate School of Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Akira Nakayama
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Haruyuki Nakano
- Department of Chemistry, Graduate School of Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Saree Phongphanphanee
- Department of Materials Science, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand. and Computational Biomodelling Laboratory for Agricultural Science and Technology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand and Specialized center of Rubber and Polymer Materials in Agriculture and Industry, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand and Thailand Center of Excellence in Physics (ThEP Center), Commission on Higher Education, Bangkok 10400, Thailand
| |
Collapse
|
29
|
Ohtsuka Y, Nishikawa Y, Ogihara H, Yamanaka I, Ratanasak M, Nakayama A, Hasegawa JY. Theoretical Study on the C-H Activation of Methane by Liquid Metal Indium: Catalytic Activity of Small Indium Clusters. J Phys Chem A 2019; 123:8907-8912. [PMID: 31535858 DOI: 10.1021/acs.jpca.9b06374] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mechanism of C-H activation of methane by liquid indium, which is the first step of the dehydrogenative conversion of methane to higher hydrocarbons, was investigated using density functional theory calculations. In the first-principle molecular dynamics trajectory at the experimental temperature (1200 K), low-coordinated indium atoms continuously appear on the disordered liquid surface. The C-H cleavage is endothermic on clean surfaces, while the low-coordinated indium atoms reduce the endothermicity significantly. In small indium clusters, which are models of low-coordinated atoms on a surface, the calculated activation energy is much smaller than that on the clean surface. The energy level of the methane C-H σ* orbital is reduced by the interaction with the indium 5pσ orbitals. In2 shows the lowest activation energy and exothermicity in the C-H bond cleavage.
Collapse
Affiliation(s)
- Yuhki Ohtsuka
- Institute for Catalysis , Hokkaido University , N21W10, Kita-ku , Sapporo 001-0021 , Japan
| | - Yuta Nishikawa
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology , Tokyo Institute of Technology , Tokyo 152-8552 , Japan
| | - Hitoshi Ogihara
- Department of Applied Chemistry, Graduate School of Science and Engineering , Saitama University , 255 Shimo-Okubo, Sakura-ku , Saitama 338-8570 , Japan
| | - Ichiro Yamanaka
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology , Tokyo Institute of Technology , Tokyo 152-8552 , Japan
| | - Manussada Ratanasak
- Institute for Catalysis , Hokkaido University , N21W10, Kita-ku , Sapporo 001-0021 , Japan
| | - Akira Nakayama
- Institute for Catalysis , Hokkaido University , N21W10, Kita-ku , Sapporo 001-0021 , Japan
| | - Jun-Ya Hasegawa
- Institute for Catalysis , Hokkaido University , N21W10, Kita-ku , Sapporo 001-0021 , Japan
| |
Collapse
|
30
|
Saito K, Ueno S, Nakayama A, Nitta SI, Arai K, Hasunuma T, Saito Y. Overall Similarities and a Possible Factor Affecting Plasma Metabolome Profiles Between Venous and Capillary Blood Samples From 20 Healthy Human Males. J Pharm Sci 2019; 108:3737-3744. [PMID: 31493412 DOI: 10.1016/j.xphs.2019.08.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/08/2019] [Accepted: 08/21/2019] [Indexed: 12/23/2022]
Abstract
Amino acids and lipids are biomarkers used to assess the presence and severity of disease, as well as the toxicological response to drugs. Although upper-extremity venipuncture is a well-used standard technique, fingertip capillary sampling is a more convenient procedure. Delineating the global differences in amino acid and lipid levels in capillary and venous blood samples is paramount for expanding the application of capillary blood tests in biomarker assays. We recruited 20 healthy male subjects and collected plasma obtained from both fingertip capillary and antecubital venous blood. The samples were analyzed to determine the overall profiles of amino acids and lipids and to test for differences in their levels between both vessel types. The results demonstrated that the differences between capillary and venous blood had a lower impact than interindividual variations; however, trends of separation between them were observed for amino acids. The levels of 5 out of 28 amino acids scored fold changes over 30%, while 9 out of 498 lipids had a fold change over 30%. The time required for fingertip blood collection could be a factor for the differences in 3 metabolites. These findings provide useful information for the application of fingertip capillary blood sampling in biomarker assays.
Collapse
Affiliation(s)
- Kosuke Saito
- Division of Medical Safety Science, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-9501, Japan
| | - Satoko Ueno
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-8681, Japan
| | - Akira Nakayama
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-8681, Japan
| | - Shin-Ichiro Nitta
- Bioanalysis Department, LSI Medience Corporation, 3-30-1 Shimura, Itabashi-ku, Tokyo 174-8555, Japan
| | - Koji Arai
- Bioanalysis Department, LSI Medience Corporation, 3-30-1 Shimura, Itabashi-ku, Tokyo 174-8555, Japan
| | - Tomoko Hasunuma
- Department of Research, Clinical Trial Center, Kitasato University Kitasato Institute Hospital, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8642, Japan
| | - Yoshiro Saito
- Division of Medical Safety Science, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-9501, Japan.
| |
Collapse
|
31
|
Hirasawa S, Kitahara Y, Okamatsu Y, Fujii T, Nakayama A, Ueno S, Ijichi C, Futaki F, Nakata K, Taki M. Facile and Efficient Chemoenzymatic Semisynthesis of Fc-Fusion Compounds for Half-Life Extension of Pharmaceutical Components. Bioconjug Chem 2019; 30:2323-2331. [PMID: 31038930 DOI: 10.1021/acs.bioconjchem.9b00235] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The formation of Fc-fusions, in which biologically active molecules and the Fc fragment of antibodies are linked to each other, is one of the most efficient and successful half-life extension technologies to be developed and applied to peptide and protein pharmaceuticals thus far. Fc-fusion compounds are generally produced by recombinant methods. However, these cannot be applied to artificial middle molecules, such as peptides with non-natural amino acids, unnatural cyclic peptides, or pharmaceutical oligonucleotides. Here, we developed a simple, efficient, semisynthetic method for Fc-fusion production involving our previously developed enzymatic N-terminal extension reaction (i.e., NEXT-A reaction) and strain-promoted azide-alkyne cycloaddition, achieving quantitative conversion and high selectivity for the N-terminus of the Fc protein. An Fc-fusion compound prepared by this method showed comparable biological activity to that of the original peptide and a long-circulating plasma half-life. Thus, the proposed method is potentially applicable for the conjugation of a wide range of pharmaceutical components.
Collapse
Affiliation(s)
- Shigeo Hirasawa
- Department of Engineering Science, Graduate School of Informatics and Engineering , The University of Electro-Communications (UEC) , 1-5-1 Chofugaoka , Chofu , Tokyo 182-8585 , Japan
| | | | | | | | | | | | | | | | | | - Masumi Taki
- Department of Engineering Science, Graduate School of Informatics and Engineering , The University of Electro-Communications (UEC) , 1-5-1 Chofugaoka , Chofu , Tokyo 182-8585 , Japan
| |
Collapse
|
32
|
Nakayama A, Yoshida M, Kagawa N, Nagao T. The neonicotinoids acetamiprid and imidacloprid impair neurogenesis and alter the microglial profile in the hippocampal dentate gyrus of mouse neonates. J Appl Toxicol 2019; 39:877-887. [PMID: 30693975 DOI: 10.1002/jat.3776] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 11/14/2018] [Accepted: 12/20/2018] [Indexed: 11/06/2022]
Abstract
Acetamiprid (ACE) and imidacloprid (IMI) are widely used neonicotinoid pesticides. They bind selectively to insect nicotinic acetylcholine receptors (nAChRs) and are considered non-hazardous to mammals. Few studies have assessed the activation of vertebrate nAChRs and the neurodevelopmental toxicity following in utero or neonatal exposure to neonicotinoids; therefore, we evaluated the effects of ACE or IMI exposure on neurogenesis and microglial profiles in the developing hippocampal dentate gyrus (DG) of mouse neonates. Mice were exposed to ACE, IMI (both 5 mg/kg/day) or nicotine (0.5 mg/kg/day) from postnatal day (P)12 to P26 by oral gavage. On P27, brains were removed, and neurogenesis and microglial activation in the hippocampal DG were examined via immunohistochemistry. A reduction in neurogenesis in the hippocampal DG of neonates following ACE, IMI and nicotine treatment was found. Additionally, neonicotinoid-exposed newborns showed an increase in the number of amoeboid-type and activated M1-type microglia. These results suggest that exposure to ACE and IMI impairs neurogenesis and alters microglial profiles in the developing hippocampal DG following oral dosing in an early postnatal period. A better understanding of the potential effects of these pesticides on human infant health is an important goal of our research.
Collapse
Affiliation(s)
- Akira Nakayama
- Laboratory of Developmental Biology, Department of Life Science, Kindai University, 3-4-1 Kowakae, Higashiosaka, Osaka, 577-8502, Japan
| | - Manami Yoshida
- Laboratory of Developmental Biology, Department of Life Science, Kindai University, 3-4-1 Kowakae, Higashiosaka, Osaka, 577-8502, Japan
| | - Nao Kagawa
- Laboratory of Developmental Biology, Department of Life Science, Kindai University, 3-4-1 Kowakae, Higashiosaka, Osaka, 577-8502, Japan
| | - Tetsuji Nagao
- Laboratory of Developmental Biology, Department of Life Science, Kindai University, 3-4-1 Kowakae, Higashiosaka, Osaka, 577-8502, Japan
| |
Collapse
|
33
|
Harada I, Nakayama A, Hasegawa JY. Constraint structure optimization to a specific minimum using ionization energy. J Comput Chem 2019; 40:507-514. [PMID: 30414201 DOI: 10.1002/jcc.25738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 10/02/2018] [Accepted: 10/02/2018] [Indexed: 11/10/2022]
Abstract
A structure optimization method with ionization energy constraint is developed to explore structures with specific ionization energy. The Levine-Coe-Martínez penalty function (J Phys Chem B 2008, 112, 405) was adopted, and the penalty function includes a predefined core-ionization energy and inner-shell ionization energy. For an SN 2 reaction, isomerization of a platinum complex, a proton transfer reaction, and carbon monoxide adsorption on a palladium cluster, the present method was tested, and the targeted energy minima were obtained as designated by the input ionization energy. The shape of the objective function, the parameters in the penalty function, and structural changes during the optimization process were discussed. An automated parameter setting and possible problems are discussed for future direction. © 2018 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Iori Harada
- Institute for Catalysis, Hokkaido University, Kita-ku, Sapporo, 001-0021, Japan
| | - Akira Nakayama
- Institute for Catalysis, Hokkaido University, Kita-ku, Sapporo, 001-0021, Japan
| | - Jun-Ya Hasegawa
- Institute for Catalysis, Hokkaido University, Kita-ku, Sapporo, 001-0021, Japan
| |
Collapse
|
34
|
Maeno Z, Yasumura S, Liu C, Toyao T, Kon K, Nakayama A, Hasegawa JY, Shimizu KI. Experimental and theoretical study of multinuclear indium–oxo clusters in CHA zeolite for CH4 activation at room temperature. Phys Chem Chem Phys 2019; 21:13415-13427. [DOI: 10.1039/c9cp01873e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The local structure of CHA-zeolite supported indium–oxo clusters and CH4 activation at room temperature were experimentally and theoretically studied.
Collapse
Affiliation(s)
- Zen Maeno
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
| | | | - Chong Liu
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
| | - Takashi Toyao
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
- Elements Strategy Initiative for Catalysts and Batteries
| | - Kenichi Kon
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
| | - Akira Nakayama
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
- JST
| | - Jun-ya Hasegawa
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
| | - Ken-ichi Shimizu
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
- Elements Strategy Initiative for Catalysts and Batteries
| |
Collapse
|
35
|
Nakayama A, Imaizumi A, Yoshida H. Methods for Absolute Quantification of Human Plasma Free Amino Acids by High-Performance Liquid Chromatography/Electrospray Ionization Mass Spectrometry Using Precolumn Derivatization. Methods Mol Biol 2019; 2030:207-218. [PMID: 31347120 DOI: 10.1007/978-1-4939-9639-1_16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Plasma free amino acid (PFAA) concentrations in humans are affected by various diseases. However, the variations caused are not dramatic, so a high accurate and precise method for analyzing PFAAs is required. The PFAA analysis protocol described in this chapter covers blood sampling, sample pretreatment, amino acid derivatization, and LC-MS analysis. Each procedure is important for accurate and precise quantification.In the protocol, a human blood sample is collected using an EDTA-2Na or 2K vacuum collection tube and then immediately cooled in water mixed with crushed ice. The sample is then centrifuged on cooling to allow a plasma sample to be removed. A stable-isotope-labeled internal standard solution is added to the plasma, and then the plasma is deproteinized with acetonitrile. The amino acids in the plasma are then derivatized using 3-aminopyridyl-N-hydroxysuccinimidyl carbamate (APDS) reagent which is designed for LC-MS analysis. The derivatized amino acids are separated by reverse-phase HPLC and detected by electrospray ionization mass spectrometry. Using this method, 21 amino acids in human plasma can be analyzed with a 12 min cycle. The accuracy and precision are both better than the required criteria given by the US Food and Drug Administration in guidance of Bioanalytical Method Validation.
Collapse
Affiliation(s)
- Akira Nakayama
- Institute For Innovation, Ajinomoto Co., Inc., Suzuki-Cho, Kawasaki-Ku, Kawasaki-Shi, Japan.
| | - Akira Imaizumi
- Institute For Innovation, Ajinomoto Co., Inc., Suzuki-Cho, Kawasaki, Kanagawa, Japan
| | - Hiroo Yoshida
- AminoIndex Dept. AminoScience Division, Ajinomoto Co., Inc., Tokyo, Japan
| |
Collapse
|
36
|
Sato N, Nakayama A, Takai Y, Kono T, Kamata T, Kanno M. [Three Cases of Resectable Advanced Gastric Cancer Treated with Neoadjuvant Chemotherapy]. Gan To Kagaku Ryoho 2018; 45:2060-2062. [PMID: 30692284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Three patients diagnosed with HER2-negative resectable advanced gastric cancer with extensive regional lymph node metastases were treated with neoadjuvant chemotherapy(NAC), followed by gastrectomy with D2lymph node dissection. One patient received four 21-day courses of S-1 plus oxaliplatin(G-SOX), and pathological effect(PE)was Grade 3. Two patients received four 21-day courses of capecitabine plus oxaliplatin(CapeOX), and each PE was Grade 2and Grade 1a, respectively. One patient in poor PE was with recurrent liver and peritoneal metastases. This suggested that for resectable advanced gastric cancer with extensive regional lymph node metastases, NAC by SOX or CapeOX was effective for some patients.
Collapse
|
37
|
Matsuoka K, Albrecht K, Nakayama A, Yamamoto K, Fujita K. Highly Efficient Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes with Fully Solution-Processed Organic Multilayered Architecture: Impact of Terminal Substitution on Carbazole-Benzophenone Dendrimer and Interfacial Engineering. ACS Appl Mater Interfaces 2018; 10:33343-33352. [PMID: 30187748 DOI: 10.1021/acsami.8b09451] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A series of second-generation carbazole-benzophenone dendrimer substituted by several functional groups at terminal positions (subG2B) was investigated toward a thermally activated delayed fluorescence (TADF) emitter for nondoped emissive layer (EML) application in a solution-processed organic light-emitting diode (OLED). Substitution was found to dramatically alter the photophysical properties of the dendritic TADF emitters. The introduction of tert-butyl and phenyl group endows the subG2Bs with aggregation-induced emission enhancement character by suppression of internal conversion in singlet excited states. In the meantime, the introduction of a methoxy group resulted in aggregation-caused quenching character. The device performance of the OLED, where subG2B neat films were incorporated as nondoped EMLs, was found to be highly enhanced by adopting fully solution-processed organic multilayer architecture in comparison to the devices with a vacuum-deposited electron transporting layer (ETL), achieving a maximum external quantum efficiency of 17.0%. Such improvement was attributable to the improved carrier balance via intermixing at solution-processed EML/ETL interfaces. It was also found that the post-thermal annealing of the OLED at appropriate temperatures could be beneficial to enhance OLED performance by promoting the intermixing EML/ETL interface to some extent. Our findings emphasize the potential utility of dendritic TADF emitters in the solution-processed TADF-OLED and increase the importance to manipulate dendrimer/small molecule interfaces.
Collapse
Affiliation(s)
- Kenichi Matsuoka
- Institute for Materials Chemistry and Engineering , Kyushu University , 6-1 Kasuga koen , Kasuga, Fukuoka 816-8580 , Japan
| | | | - Akira Nakayama
- Institute for Catalysis , Hokkaido University , Sapporo 001-0021 , Japan
| | | | - Katsuhiko Fujita
- Institute for Materials Chemistry and Engineering , Kyushu University , 6-1 Kasuga koen , Kasuga, Fukuoka 816-8580 , Japan
| |
Collapse
|
38
|
Fuchizaki U, Miyazawa M, Nakayama A. Vanishing Pancreas. Gastroenterology 2018; 155:280-281. [PMID: 29409874 DOI: 10.1053/j.gastro.2018.01.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/15/2018] [Accepted: 01/18/2018] [Indexed: 12/02/2022]
Affiliation(s)
| | - Masaki Miyazawa
- Department of Gastroenterology, Keiju Medical Center, Nanao, Japan
| | - Akira Nakayama
- Department of Gastroenterological Surgery, Keiju Medical Center, Nanao, Japan
| |
Collapse
|
39
|
Bernard BK, Tsubuku S, Kayahara T, Maeda K, Hamada M, Nakamura T, Shirai Y, Nakayama A, Ueno S, Mihara R. Studies of the Toxicological Potential of Capsinoids: X. Safety Assessment and Pharmacokinetics of Capsinoids in Healthy Male Volunteers after a Single Oral Ingestion of CH-19 Sweet Extract. Int J Toxicol 2018; 27 Suppl 3:137-47. [DOI: 10.1080/10915810802514476] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The safety and pharmacokinetics of capsinoids, physiologically active ingredients of CH-19 Sweet extract, were investigated in 16 healthy male volunteers following a single oral ingestion of CH-19 Sweet extract. The study subjects consumed soft gel capsules containing either capsinoids (15 or 30 mg/person) or placebo. Capsinoids were well tolerated, and no clinically significant changes in physical examinations, blood pressure, heart rate, body temperature, electrocardiogram, hematology, blood chemistry, and urinalysis were observed at either the 15 or 30 mg dose. Body temperature tended to increase after the ingestion of capsinoids, but remained within the normal range. Plasma levels of capsinoids and their metabolite, vanillyl alcohol, were below the lower limit of quantitation. In addition, some study subjects showed increases in urinary excretion of 3-methoxy-4-hydroxyphenylglycol that, when compared to the group receiving the placebo, did not achieve statistical significance.
Collapse
Affiliation(s)
| | - Shoji Tsubuku
- Health Services Development Department, Ajinomoto Co., Inc., Tokyo, Japan
| | - Takashi Kayahara
- Health Services Development Department, Ajinomoto Co., Inc., Tokyo, Japan
| | - Kazutoshi Maeda
- Health Services Development Department, Ajinomoto Co., Inc., Tokyo, Japan
| | - Minoru Hamada
- Kurume Clinical Pharmacology Clinic, Medical Corporation Kurume Applied Bio-Pharmatech, Kurume, Fukuoka, Japan
| | - Takeshi Nakamura
- Shin Nippon Biomedical Laboratories, Ltd., Kainan, Wakayama, Japan
| | - Yoshiaki Shirai
- Drug Metabolism & Pharmacokinetics, Nonclinical Developmental Research Department, Pharmaceutical Research Laboratories, Pharmaceutical Company, Ajinomoto Co., Inc, Kawasaki, Kanagawa, Japan
| | - Akira Nakayama
- Drug Metabolism & Pharmacokinetics, Nonclinical Developmental Research Department, Pharmaceutical Research Laboratories, Pharmaceutical Company, Ajinomoto Co., Inc, Kawasaki, Kanagawa, Japan
| | - Satoko Ueno
- Drug Metabolism & Pharmacokinetics, Nonclinical Developmental Research Department, Pharmaceutical Research Laboratories, Pharmaceutical Company, Ajinomoto Co., Inc, Kawasaki, Kanagawa, Japan
| | - Ryuichi Mihara
- Drug Metabolism & Pharmacokinetics, Nonclinical Developmental Research Department, Pharmaceutical Research Laboratories, Pharmaceutical Company, Ajinomoto Co., Inc, Kawasaki, Kanagawa, Japan
| |
Collapse
|
40
|
Yanai K, Ishimura K, Nakayama A, Hasegawa JY. First-Order Interacting Space Approach to Excited-State Molecular Interaction: Solvatochromic Shift of p-Coumaric Acid and Retinal Schiff Base. J Chem Theory Comput 2018; 14:3643-3655. [DOI: 10.1021/acs.jctc.7b01089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kazuma Yanai
- Institute for Catalysis, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo 001-0021, Japan
| | - Kazuya Ishimura
- Department of Theoretical and Computational Molecular Science, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan
| | - Akira Nakayama
- Institute for Catalysis, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo 001-0021, Japan
| | - Jun-ya Hasegawa
- Institute for Catalysis, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo 001-0021, Japan
| |
Collapse
|
41
|
Ohkura N, Ohnishi K, Taniguchi M, Nakayama A, Usuba Y, Fujita M, Fujii A, Ishibashi K, Baba K, Atsumi G. Anti-platelet effects of chalcones from Angelica keiskei Koidzumi (Ashitaba) in vivo. Pharmazie 2018; 71:651-654. [PMID: 29441970 DOI: 10.1691/ph.2016.6678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Angelica keiskei Koidzumi (Ashitaba) is a traditional folk medicine that is also regarded in Japan as a health food with potential antithrombotic properties. The ability of the major chalcones, xanthoangelol (XA) and 4-hydroxyderricin (4-HD) extracted from Ashitaba roots to inhibit platelet aggregation activity in vitro was recently determined. However, the anti-platelet activities of Ashitaba chalcones in vivo have remained unclear. The present study examines the anti-platelet effects of Ashitaba exudate and its constituent chalcones using mouse tail-bleeding models that reflect platelet aggregation in vivo. Ashitaba exudate and the major chalcone subtype XA, suppressed the lipopolysaccharide (LPS)-induced shortening of mouse tail bleeding. However, trace amounts of other Ashitaba chalcone subtypes including xanthoangelols B (XB), D (XD), E (XE) and F (XF) did not affect tail bleeding. These results suggest that the major chalcone subtype in Ashitaba, XA, has anti-platelet-activities in vivo.
Collapse
|
42
|
Yang C, Lin Y, Debenest G, Nakayama A, Qiu T. Lattice Boltzmann simulation of asymptotic longitudinal mass dispersion in reconstructed random porous media. AIChE J 2018. [DOI: 10.1002/aic.16088] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Chen Yang
- Fujian Universities Engineering Research Center of Reactive Distillation Technology, College of Chemical EngineeringFuzhou UniversityFuzhou 350116 Fujian China
| | - Yixiong Lin
- Fujian Universities Engineering Research Center of Reactive Distillation Technology, College of Chemical EngineeringFuzhou UniversityFuzhou 350116 Fujian China
| | - Gérald Debenest
- Université de Toulouse, INPT, UPS, IMFT (Institut de Mécanique des Fluides de Toulouse)31400 Toulouse France
| | - Akira Nakayama
- Dept. of Mechanical EngineeringShizuoka University, 3‐5‐1 JohokuNakaku Hamamatsu 432‐8561 Japan
- School of Civil Engineering and ArchitectureWuhan Polytechnic UniversityWuhan 430023 Hubei China
| | - Ting Qiu
- Fujian Universities Engineering Research Center of Reactive Distillation Technology, College of Chemical EngineeringFuzhou UniversityFuzhou 350116 Fujian China
| |
Collapse
|
43
|
Oohora K, Meichin H, Zhao L, Wolf MW, Nakayama A, Hasegawa JY, Lehnert N, Hayashi T. Catalytic Cyclopropanation by Myoglobin Reconstituted with Iron Porphycene: Acceleration of Catalysis due to Rapid Formation of the Carbene Species. J Am Chem Soc 2017; 139:17265-17268. [DOI: 10.1021/jacs.7b10154] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Koji Oohora
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
- Frontier
Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi 332-0012, Japan
| | - Hiroyuki Meichin
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
| | - Liming Zhao
- Institute
for Catalysis, Hokkaido University, Sapporo 001-0021, Japan
| | - Matthew W. Wolf
- Department
of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Akira Nakayama
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi 332-0012, Japan
- Institute
for Catalysis, Hokkaido University, Sapporo 001-0021, Japan
| | - Jun-ya Hasegawa
- Institute
for Catalysis, Hokkaido University, Sapporo 001-0021, Japan
| | - Nicolai Lehnert
- Department
of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Takashi Hayashi
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
| |
Collapse
|
44
|
Sato N, Nakayama A, Takai Y, Kamata T. [A Case of HER2-Positive Unresectable Gastric Cancer with Multiple Lymph Node and Liver Metastases Controlled Effectively by Combination Chemotherapy with Capecitabine, Oxaliplatin, and Trastuzumab]. Gan To Kagaku Ryoho 2017; 44:1266-1268. [PMID: 29394602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A 77-year-old woman was diagnosed with HER2-positive unresectable gastric cancer with multiple lymph node and liver metastases(cT3-4, cN3, cM1[HEP, LYM], cStage IV ). Four courses of combination chemotherapy with capecitabine, oxaliplatin, and trastuzumab(XELOX plus Tras)were administered. Though all lesions showed a complete or partial response, anorexia and body weight loss appeared because of the stenosis in the primary gastric lesion. After another course, these symptoms became worse and she underwent laparoscopic gastrojejunostomy. She progressed favorably after the surgery, her anorexia improved and her weight increased. Thirty-four days after the surgery, the same chemotherapy was continued. At present, the metastases are well controlled 12months after the initial treatment. It is suggested that XELOX plus Tras is an effective chemotherapy regimen for HER2-positive unresectable gastric cancer.
Collapse
|
45
|
Ishikawa Y, Nakayama K, Morimoto M, Mizutani A, Nakayama A, Toyoshima K, Hayashi A, Takagi S, Dairiki R, Miyashita H, Matsumoto S, Gamo K, Nomura T, Nakamura K. Synergistic anti-AML effects of the LSD1 inhibitor T-3775440 and the NEDD8-activating enzyme inhibitor pevonedistat via transdifferentiation and DNA rereplication. Oncogenesis 2017; 6:e377. [PMID: 28892104 PMCID: PMC5623902 DOI: 10.1038/oncsis.2017.76] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [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: 04/09/2017] [Revised: 06/18/2017] [Accepted: 07/11/2017] [Indexed: 12/12/2022] Open
Abstract
Lysine-specific demethylase 1A (LSD1, KDM1A) specifically demethylates di- and monomethylated histones H3K4 and K9, resulting in context-dependent transcriptional repression or activation. We previously identified an irreversible LSD1 inhibitor T-3775440, which exerts antileukemic activities in a subset of acute myeloid leukemia (AML) cell lines by inducing cell transdifferentiation. The NEDD8-activating enzyme inhibitor pevonedistat (MLN4924, TAK-924) is an investigational drug with antiproliferative activities in AML, and is also reported to induce cell differentiation. We therefore tested the combination of these two agents in AML models. The combination treatment resulted in synergistic growth inhibition of AML cells, accompanied by enhanced transdifferentiation of an erythroid leukemia lineage into granulomonocytic-like lineage cells. In addition, pevonedistat-induced rereplication stress during the S phase was greatly augmented by concomitant treatment with T-3775440, as reflected by the increased induction of apoptosis. We further demonstrated that the combination treatment was markedly effective in subcutaneous tumor xenograft models as well as in a disseminated model of AML, leading to tumor eradication or prolonged survival in T-3775440/pevonedistat cotreated mice. Our findings indicate the therapeutic potential of the combination of LSD1 inhibitors and pevonedistat for the treatment of AML.
Collapse
Affiliation(s)
- Y Ishikawa
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - K Nakayama
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - M Morimoto
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - A Mizutani
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - A Nakayama
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - K Toyoshima
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - A Hayashi
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - S Takagi
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - R Dairiki
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - H Miyashita
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - S Matsumoto
- Integrated Technology Research Laboratories, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - K Gamo
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - T Nomura
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - K Nakamura
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| |
Collapse
|
46
|
Tamura M, Kishi R, Nakayama A, Nakagawa Y, Hasegawa JY, Tomishige K. Formation of a New, Strongly Basic Nitrogen Anion by Metal Oxide Modification. J Am Chem Soc 2017; 139:11857-11867. [DOI: 10.1021/jacs.7b05227] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Masazumi Tamura
- Department
of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07
Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
- JST, PRESTO, 4-1-8 Honcho
Kawaguchi, Saitama 332-0012, Japan
| | - Ryota Kishi
- Department
of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07
Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Akira Nakayama
- JST, PRESTO, 4-1-8 Honcho
Kawaguchi, Saitama 332-0012, Japan
- Institute
for Catalysis, Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo 001-0021, Japan
| | - Yoshinao Nakagawa
- Department
of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07
Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Jun-ya Hasegawa
- Institute
for Catalysis, Hokkaido University, Kita 21 Nishi 10, Kita-ku, Sapporo 001-0021, Japan
| | - Keiichi Tomishige
- Department
of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-07
Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| |
Collapse
|
47
|
Nageh H, Zhao L, Nakayama A, Hasegawa JY, Wang Y, Nakano T. Photo-induced β-elimination of 9-fluorenylmethanol leading to dibenzofulvene. Chem Commun (Camb) 2017; 53:8431-8434. [PMID: 28702520 DOI: 10.1039/c7cc03297h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An effective photo-induced β-elimination of an alcohol leading to a vinyl compound is introduced for the first time. 9-Fluorenylmethanol was irradiated in a solution using a Xe lamp and was efficiently converted to dibenzofulvene (DBF) (9-methylenefluorene) in the absence of base which is necessary in the corresponding ground-state reaction.
Collapse
Affiliation(s)
- Hassan Nageh
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering, Hokkaido University, N 21, W 10, Kita-ku, Sapporo 001-0021, Japan.
| | - Liming Zhao
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering, Hokkaido University, N 21, W 10, Kita-ku, Sapporo 001-0021, Japan.
| | - Akira Nakayama
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering, Hokkaido University, N 21, W 10, Kita-ku, Sapporo 001-0021, Japan.
| | - Jun-Ya Hasegawa
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering, Hokkaido University, N 21, W 10, Kita-ku, Sapporo 001-0021, Japan. and Integrated Research Consortium on Chemical Sciences (IRCCS), Institute for Catalysis, Hokkaido University, N21W10, Kita-ku, Sapporo 001-0021, Japan
| | - Yue Wang
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering, Hokkaido University, N 21, W 10, Kita-ku, Sapporo 001-0021, Japan.
| | - Tamaki Nakano
- Institute for Catalysis (ICAT) and Graduate School of Chemical Sciences and Engineering, Hokkaido University, N 21, W 10, Kita-ku, Sapporo 001-0021, Japan. and Integrated Research Consortium on Chemical Sciences (IRCCS), Institute for Catalysis, Hokkaido University, N21W10, Kita-ku, Sapporo 001-0021, Japan
| |
Collapse
|
48
|
Ito A, Yasuda A, Yamaoka K, Ueda M, Nakayama A, Takatsuto S, Honda I. Brachytic 1 of barley (Hordeum vulgare L.) encodes the α subunit of heterotrimeric G protein. J Plant Physiol 2017; 213:209-215. [PMID: 28412605 DOI: 10.1016/j.jplph.2017.03.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 03/21/2017] [Accepted: 03/21/2017] [Indexed: 06/07/2023]
Abstract
Physiological and molecular biological analysis of the dwarf barley (Hordeum vulgare L.) mutant brachytic 1 (brh1) was conducted. The root responses of brh1 to brassinolide were weaker than those of wild type, but the responses of leaf segments of dark-grown plants were not. Responses of brh1 to gibberellin A3 were similar to or slightly stronger than those of wild type. Endogenous levels of these hormones in young seedlings were not clearly different between brh1 and wild type. Skotomorphogeneses of brh1 were similar to those of wild type. Some of these physiological characteristics of brh1 resemble those of the dwarf rice (Oryza sativa L.) mutant daikoku (dwarf1; d1), whose dwarfism is caused by a mutation in the heterotrimeric G protein α (Gα) subunit. A database search indicated that the barley Gα gene is located near the locus where Brh1 has already been genetically mapped. Sequences of the Gα gene and cDNAs of five brh1 alleles contained substitutions and a deletion that lead to the production of abnormal Gα proteins. These results indicate that the phenotype of brh1, similarly to that of d1, is caused by mutations in an orthologous gene encoding Gα.
Collapse
Affiliation(s)
- Ai Ito
- Department of Biotechnology, Maebashi Institute of Technology, Maebashi, Gunma 371-0816, Japan
| | - Ayumi Yasuda
- Department of Biotechnology, Maebashi Institute of Technology, Maebashi, Gunma 371-0816, Japan
| | - Kosuke Yamaoka
- Department of Biotechnology, Maebashi Institute of Technology, Maebashi, Gunma 371-0816, Japan
| | - Minase Ueda
- Department of Biotechnology, Maebashi Institute of Technology, Maebashi, Gunma 371-0816, Japan
| | - Akira Nakayama
- Department of Biotechnology, Maebashi Institute of Technology, Maebashi, Gunma 371-0816, Japan
| | - Suguru Takatsuto
- Department of Chemistry, Joetsu University of Education, Joetsu, Niigata 943-8512, Japan
| | - Ichiro Honda
- Department of Biotechnology, Maebashi Institute of Technology, Maebashi, Gunma 371-0816, Japan.
| |
Collapse
|
49
|
Zhang W, Kuwahara F, Nakayama A. A Study on Mechanical Dispersion in a Passage Filled with a Nanofluid-Saturated Metal Foam. KAGAKU KOGAKU RONBUN 2017. [DOI: 10.1252/kakoronbunshu.43.95] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wenhao Zhang
- Graduate School of Science and Technology, Shizuoka University
| | - Fujio Kuwahara
- Department of Mechanical Engineering, Shizuoka University
| | - Akira Nakayama
- Department of Mechanical Engineering, Shizuoka University
| |
Collapse
|
50
|
Albrecht K, Matsuoka K, Yokoyama D, Sakai Y, Nakayama A, Fujita K, Yamamoto K. Thermally activated delayed fluorescence OLEDs with fully solution processed organic layers exhibiting nearly 10% external quantum efficiency. Chem Commun (Camb) 2017; 53:2439-2442. [DOI: 10.1039/c6cc09275f] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An OLED device with fully solution processed organic layers with new laminatable TADF dendrimers, which exhibits 9.5% external quantum efficiency, is reported.
Collapse
Affiliation(s)
- Ken Albrecht
- Laboratory for Chemistry and Life Science
- Tokyo Institute of Technology
- Yokohama 226-8503
- Japan
| | - Kenichi Matsuoka
- Institute of Materials Chemistry and Engineering
- Kyushu University
- Kasuga
- Japan
| | - Daisuke Yokoyama
- Department of Organic Materials Science
- Yamagata University
- Yonezawa
- Japan
| | - Yoshiya Sakai
- Department of Organic Materials Science
- Yamagata University
- Yonezawa
- Japan
| | - Akira Nakayama
- Institute for Catalysis
- Hokkaido University
- Sapporo 001-0021
- Japan
| | - Katsuhiko Fujita
- Institute of Materials Chemistry and Engineering
- Kyushu University
- Kasuga
- Japan
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science
- Tokyo Institute of Technology
- Yokohama 226-8503
- Japan
| |
Collapse
|