1
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Parker AL, Johnstone TC. Carbon monoxide poisoning: A problem uniquely suited to a medicinal inorganic chemistry solution. J Inorg Biochem 2024; 251:112453. [PMID: 38100903 DOI: 10.1016/j.jinorgbio.2023.112453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 11/30/2023] [Accepted: 12/03/2023] [Indexed: 12/17/2023]
Abstract
Carbon monoxide poisoning is one of the most common forms of poisoning in the world. Although the primary mode of treatment, oxygen therapy, is highly effective in many cases, there are instances in which it is inadequate or inappropriate. Whereas oxygen therapy relies on high levels of a low-affinity ligand (O2) to displace a high-affinity ligand (CO) from metalloproteins, an antidote strategy relies on introducing a molecule with a higher affinity for CO than native proteins (Kantidote,CO > Kprotein,CO). Based on the fundamental chemistry of CO, such an antidote is most likely required to be an inorganic compound featuring an electron-rich transition metal. A review is provided of the protein-, supramolecular complex-, and small molecule-based CO poisoning antidote platforms that are currently under investigation.
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Affiliation(s)
- A Leila Parker
- Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, California 95064, United States
| | - Timothy C Johnstone
- Department of Chemistry and Biochemistry, University of California Santa Cruz, Santa Cruz, California 95064, United States..
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2
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Liu H, Liu T, Qin Q, Li B, Li F, Zhang B, Sun W. The importance of and difficulties involved in creating molecular probes for a carbon monoxide gasotransmitter. Analyst 2023; 148:3952-3970. [PMID: 37522849 DOI: 10.1039/d3an00849e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
As one of the triumvirate of recognized gasotransmitter molecules, namely NO, H2S, and CO, the physiological effects of CO and its potential as a biomarker have been widely investigated, garnering particular attention due to its reported hypotensive, anti-inflammatory, and cytoprotective properties, making it a promising therapeutic agent. However, the development of CO molecular probes has remained relatively stagnant in comparison with the fluorescent probes for NO and H2S, owing to its inert molecular state under physiological conditions. In this review, starting from elucidating the definition and significance of CO as a gasotransmitter, the imperative for the advancement of CO probes, especially fluorescent probes, is expounded. Subsequently, the current state of development of CO probe methodologies is comprehensively reviewed, with an overview of the challenges and prospects in this burgeoning field of research.
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Affiliation(s)
- Huanying Liu
- School of Mechanical and Power Engineering, Dalian Ocean University, Dalian 116023, China
| | - Ting Liu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
| | - Qian Qin
- College of Medical Laboratory, Dalian Medical University, Dalian 116044, China.
| | - Bingyu Li
- College of Medical Laboratory, Dalian Medical University, Dalian 116044, China.
| | - Fasheng Li
- College of Medical Laboratory, Dalian Medical University, Dalian 116044, China.
| | - Boyu Zhang
- College of Medical Laboratory, Dalian Medical University, Dalian 116044, China.
| | - Wen Sun
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
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3
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Lebedinskiy K, Jindřich J. Preparation of 6-Monohalo-β-cyclodextrin Derivatives with Selectively Methylated Rims via Diazonium Salts. ACS OMEGA 2023; 8:28268-28276. [PMID: 37576619 PMCID: PMC10413458 DOI: 10.1021/acsomega.3c01950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 07/14/2023] [Indexed: 08/15/2023]
Abstract
A series of 6-monohalo (Cl, Br, and I) β-cyclodextrin derivatives with various types of methylations were synthesized via a diazotization/nucleophilic displacement reaction from the corresponding methylated cyclodextrin amines. All four starting compounds (6A-amino-6A-deoxy derivatives of native β-CD, per-6-O-methyl-, per-2,3-O-methyl-, and per-2,3,6-O-methyl-β-CD) were found to have different reactivities under the same reaction conditions. Unsubstituted and fully per-O-methylated cyclodextrin amines undergo fast transformation, giving lower yields of the monohalogenated product. The selectively methylated cyclodextrin amines react remarkably slower and provide almost complete conversion into the desired monohalogenated compound. A pure product was, in several cases, successfully isolated with simple purification techniques (extraction and precipitation), allowing large-scale preparations. This new method opens the way for preparing poorly investigated monofunctionalized selectively methylated cyclodextrins.
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Affiliation(s)
- Konstantin Lebedinskiy
- Department of Organic Chemistry,
Faculty of Science, Charles University, Hlavova 8, CZ-128 43 Prague, Czech Republic
| | - Jindřich Jindřich
- Department of Organic Chemistry,
Faculty of Science, Charles University, Hlavova 8, CZ-128 43 Prague, Czech Republic
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4
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Cheng B, Chu X, Liu R, Ma X, Wang M, Zhang J, Jiao P, Gao Q, Ma W, Zhang Y, Zhao C, Zhou D, Xiao S. Synthesis of Novel Pentacyclic Triterpenoid Derivatives that Induce Apoptosis in Cancer Cells through a ROS-dependent, Mitochondrial-Mediated Pathway. Mol Pharm 2023; 20:701-710. [PMID: 36458832 DOI: 10.1021/acs.molpharmaceut.2c00885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Betulinic acid (BA) and oleanolic acid (OA) are plant-derived conjugates found in various medicinal plants that have emerged as potential antitumor agents. Herein, a series of novel BA and OA derivatives were synthesized by conjugation with per-O-methylated-β-cyclodextrin (PM-β-CD), and their anticancer properties against a panel of three human cancer cell lines were evaluated. Two OA-PM-β-CD conjugates (48 and 50) were observed to be the most potent conjugates against the three cell lines (MCF-7, BGC-823, and HL-60), with a 15- to 20-fold decrease in the IC50 values (IC50: 6.06-8.47 μM) compared with their parental conjugate (OA). Annexin V-FITC/propidium iodide staining and Western blot analysis revealed that both conjugates induced apoptosis in HL-60 cells. Additionally, in the representative conjugate 48-treated HL-60 cells, a decrease in mitochondrial membrane potential and subsequent release of cytochrome c into the cytosol were observed, indicating the activation of the intrinsic apoptosis pathway. Furthermore, 48 dramatically induced the generation of reactive oxygen species (ROS) in HL-60 cells, and the corresponding effect could be reversed using the ROS scavenger N-acetylcysteine. Collectively, these results suggest that the novel pentacyclic triterpenoid derivatives trigger the intrinsic apoptotic pathways via the ROS-mediated activation of caspase-3 signaling, inducing cell death in human cancer cells.
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Affiliation(s)
- Boyang Cheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xindang Chu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Ruiwen Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xinyuan Ma
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.,Shenzhen Bay Laboratory, Institute of Chemical Biology, Shenzhen 518132, China
| | - Mengyang Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Jiayi Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Pingxuan Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Qianqian Gao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Wenxiao Ma
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Yongmin Zhang
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 4 Place Jussieu, Paris 75005, France
| | - Chuanke Zhao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Biochemistry and Molecular Biology, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Demin Zhou
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.,Shenzhen Bay Laboratory, Institute of Chemical Biology, Shenzhen 518132, China.,Peking University Ningbo Institute of Marine Medicine, Ningbo 315010, China
| | - Sulong Xiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.,Shenzhen Bay Laboratory, Institute of Chemical Biology, Shenzhen 518132, China.,Peking University Ningbo Institute of Marine Medicine, Ningbo 315010, China
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5
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Suzuki Y, Taguchi K, Kure T, Enoki Y, Otagiri M, Sakai H, Matsumoto K. Long-term pharmaceutical stability of liposome-encapsulated methemoglobin as an antidote for cyanide poisoning. Int J Pharm 2021; 610:121260. [PMID: 34740759 DOI: 10.1016/j.ijpharm.2021.121260] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/11/2021] [Accepted: 10/29/2021] [Indexed: 12/29/2022]
Abstract
Liposome-encapsulated methemoglobin (metHb@Lipo) has been developed as a novel antidote for cyanide poisoning. Antidotes for lethal acute poisoning should be capable of being easily stored as ready-to-use formulations without temperature restrictions. Here, we investigated the pharmaceutical stability of the metHb@Lipo suspension after one-year storage as a ready-to-use formulation at 4 °C, room temperature (23-28 °C) and 37 °C. The liposomal integrity of metHb@Lipo was observed after one year of storage at all storage temperatures with no physicochemical change or methemoglobin leakage outside the liposome. Furthermore, the encapsulated methemoglobin remained intact without aggregation, fragmentation, denaturation, or dissociation of heme. Fresh and stored metHb@Lipo were equivalent in their binding affinity against cyanide. Moreover, all one-year stored metHb@Lipo suspensions improved the mortality rates of lethal cyanide poisoning mice comparable to fresh metHb@Lipo suspension. Additionally, all stored metHb@Lipo suspensions preserved high biocompatibility, including blood compatibility and the lack of organ toxicity. In conclusion, the metHb@Lipo suspension was a pharmaceutically stable antidote for cyanide poisoning for at least one year without any temperature restrictions.
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Affiliation(s)
- Yuto Suzuki
- Faculty of Pharmacy, Keio University, Tokyo, Japan
| | | | - Tomoko Kure
- Department of Chemistry, Nara Medical University, Kashihara, Japan
| | - Yuki Enoki
- Faculty of Pharmacy, Keio University, Tokyo, Japan
| | - Masaki Otagiri
- Faculty of Pharmaceutical Sciences, Sojo University, Kumamoto, Japan; DDS Research Institute, Sojo University, Kumamoto, Japan
| | - Hiromi Sakai
- Department of Chemistry, Nara Medical University, Kashihara, Japan
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6
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Mao Q, Das PK, Le Gac S, Boitrel B, Dorcet V, Oohora K, Hayashi T, Kitagishi H. Functional Myoglobin Model Composed of a Strapped Porphyrin/Cyclodextrin Supramolecular Complex with an Overhanging COOH That Increases O 2/CO Binding Selectivity in Aqueous Solution. Inorg Chem 2021; 60:12392-12404. [PMID: 34319113 DOI: 10.1021/acs.inorgchem.1c01628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A water-soluble strapped iron(III)tetraarylporphyrin (FeIIIPor-1) bearing two propylpyridinium groups at the side chains and a carboxylic acid group at the overhanging position of the strap was synthesized to mimic the function of myoglobin with the distal polar functionality in aqueous solution. FeIIIPor-1 forms a stable 1:1 inclusion complex with a per-O-methylated β-cyclodextrin dimer having a pyridine linker (Py3OCD), providing a hydrophobic environment and a proximal fifth ligand to stabilize the O2-complex. The ferrous complex (FeIIPorCD-1) binds both O2 and CO in aqueous solution. The O2 and CO binding affinities (P1/2O2 and P1/2CO) and half-life time (t1/2) of the O2 complex of FeIIPorCD-1 are 6.3 and 0.021 Torr, and 7 h, respectively, at pH 7 and 25 °C. The control compound without the strap structure (FeIIPorCD-2) has similar oxygen binding characteristics (P1/2O2 = 8.0 Torr), but much higher CO binding affinity (P1/2CO = 3.8 × 10-4 Torr), and longer t1/2 (30 h). The O2 and CO kinetics indicate that the strapped structure in FeIIPorCD-1 inhibits the entrance of these gaseous ligands into the iron(II) center, as evidenced by lower konO2 and konCO values. Interestingly, the CO complex of FeIIPorCD-1 is significantly destabilized (relatively larger koffCO), while the koffO2 value is much smaller than that of FeIIPorCD-2, resulting in significantly increased O2/CO selectivity (reduced M value, where M = P1/2O2/P1/2CO = 320) in FeIIPorCD-1 compared to FeIIPorCD-2 (M = 21000).
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Affiliation(s)
- Qiyue Mao
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University, Kyotanabe-city, Kyoto 610-0321, Japan
| | - Pradip K Das
- Institut des Sciences Chimiques de Rennes, Université Rennes, CNRS, UMR 6226, Rennes F-35000, France
| | - Stéphane Le Gac
- Institut des Sciences Chimiques de Rennes, Université Rennes, CNRS, UMR 6226, Rennes F-35000, France
| | - Bernard Boitrel
- Institut des Sciences Chimiques de Rennes, Université Rennes, CNRS, UMR 6226, Rennes F-35000, France
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes, Université Rennes, CNRS, UMR 6226, Rennes F-35000, France
| | - Koji Oohora
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, Japan
| | - Takashi Hayashi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita 565-0871, Japan
| | - Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University, Kyotanabe-city, Kyoto 610-0321, Japan
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7
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Suzuki Y, Taguchi K, Kure T, Sakai H, Enoki Y, Otagiri M, Matsumoto K. Liposome-encapsulated methemoglobin as an antidote against cyanide poisoning. J Control Release 2021; 337:59-70. [PMID: 34273418 DOI: 10.1016/j.jconrel.2021.07.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/06/2021] [Accepted: 07/12/2021] [Indexed: 12/12/2022]
Abstract
Cyanide induces acute lethal poisoning resulting from inhibition of cytochrome c oxidase located in the complex IV (Complex IV) of mitochondria. However, current therapies for cyanide poisoning using hydroxocobalamin and nitrous acid compounds remain a clinical issue. Here, we show that liposome-encapsulated methemoglobin (metHb@Lipo), nanosized biomimetic red blood cells, replicate the antidotal mechanism of nitrous acid compounds against cyanide poisoning, achieving superior efficacy and fast action with no adverse effects. The structure of metHb@Lipo, which consists of concentrated methemoglobin in its aqueous core and a lipid membrane resembling the red blood cell membrane, provides favorable characteristics as a cyanide antidote, such as binding properties and membrane permeability. Upon cyanide exposure, metHb@Lipo maintained the mitochondrial function in PC12 cells, resulting in a cell viability comparable to treatment with nitrous acid compounds. In a mouse model of cyanide poisoning, metHb@Lipo treatment dramatically improved mortality with a rapid recovery from the symptoms of cyanide poisoning compared to treatment with nitrous acid compounds. Furthermore, metHb@Lipo also possesses satisfactory pharmacokinetic properties without long-term bioaccumulation and toxicity. Our findings showed a novel concept to develop drugs for cyanide poisoning and provide a promising possibility for biomimetic red blood cell preparations for pharmaceutical applications.
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Affiliation(s)
- Yuto Suzuki
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Kazuaki Taguchi
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
| | - Tomoko Kure
- Department of Chemistry, Nara Medical University, Shijo-cho 840, Kashihara, Nara 634-8521, Japan
| | - Hiromi Sakai
- Department of Chemistry, Nara Medical University, Shijo-cho 840, Kashihara, Nara 634-8521, Japan
| | - Yuki Enoki
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Masaki Otagiri
- Faculty of Pharmaceutical Sciences, Sojo University, 4-22-1 Ikeda, Nishi-ku, Kumamoto City, Kumamoto 860-0082, Japan; DDS Research Institute, Sojo University, 4-22-1 Ikeda, Nishi-ku, Kumamoto City, Kumamoto 860-0082, Japan
| | - Kazuaki Matsumoto
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
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8
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Bjørklund G, Peana M, Pivina L, Dosa A, Aaseth J, Semenova Y, Chirumbolo S, Medici S, Dadar M, Costea DO. Iron Deficiency in Obesity and after Bariatric Surgery. Biomolecules 2021; 11:biom11050613. [PMID: 33918997 PMCID: PMC8142987 DOI: 10.3390/biom11050613] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/10/2021] [Accepted: 04/16/2021] [Indexed: 02/06/2023] Open
Abstract
Iron deficiency (ID) is particularly frequent in obese patients due to increased circulating levels of acute-phase reactant hepcidin and adiposity-associated inflammation. Inflammation in obese subjects is closely related to ID. It induces reduced iron absorption correlated to the inhibition of duodenal ferroportin expression, parallel to the increased concentrations of hepcidin. Obese subjects often get decreased inflammatory response after bariatric surgery, accompanied by decreased serum hepcidin and therefore improved iron absorption. Bariatric surgery can induce the mitigation or resolution of obesity-associated complications, such as hypertension, insulin resistance, diabetes mellitus, and hyperlipidemia, adjusting many parameters in the metabolism. However, gastric bypass surgery and sleeve gastrectomy can induce malabsorption and may accentuate ID. The present review explores the burden and characteristics of ID and anemia in obese patients after bariatric surgery, accounting for gastric bypass technique (Roux-en-Y gastric bypass-RYGB) and sleeve gastrectomy (SG). After bariatric surgery, obese subjects' iron status should be monitored, and they should be motivated to use adequate and recommended iron supplementation.
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Affiliation(s)
- Geir Bjørklund
- Council for Nutritional and Environmental Medicine, Toften 24, 8610 Mo i Rana, Norway
- Correspondence: (G.B.); (M.P.)
| | - Massimiliano Peana
- Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100 Sassari, Italy;
- Correspondence: (G.B.); (M.P.)
| | - Lyudmila Pivina
- Department of Neurology, Ophthalmology and Otolaryngology, Semey Medical University, 071400 Semey, Kazakhstan; (L.P.); (Y.S.)
- CONEM Kazakhstan Environmental Health and Safety Research Group, Semey Medical University, 071400 Semey, Kazakhstan
| | - Alexandru Dosa
- Faculty of Medicine, Ovidius University of Constanta, 900470 Constanta, Romania; (A.D.); (D.-O.C.)
| | - Jan Aaseth
- Research Department, Innlandet Hospital Trust, 2380 Brumunddal, Norway;
| | - Yuliya Semenova
- Department of Neurology, Ophthalmology and Otolaryngology, Semey Medical University, 071400 Semey, Kazakhstan; (L.P.); (Y.S.)
- CONEM Kazakhstan Environmental Health and Safety Research Group, Semey Medical University, 071400 Semey, Kazakhstan
| | - Salvatore Chirumbolo
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, 37134 Verona, Italy;
- CONEM Scientific Secretary, 37134 Verona, Italy
| | - Serenella Medici
- Department of Chemistry and Pharmacy, University of Sassari, Via Vienna 2, 07100 Sassari, Italy;
| | - Maryam Dadar
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj 31975/148, Iran;
| | - Daniel-Ovidiu Costea
- Faculty of Medicine, Ovidius University of Constanta, 900470 Constanta, Romania; (A.D.); (D.-O.C.)
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9
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Liu Y, Jiao Y, Luo H, Huang N, Lai M, Zou K, Yao H. Catalyst-Controlled Regiodivergent Synthesis of 1- and 3-Thiosugars with High Stereoselectivity and Chemoselectivity. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00225] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yuexin Liu
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Yang Jiao
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Huajun Luo
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Nianyu Huang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Mengnan Lai
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Kun Zou
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Hui Yao
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
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10
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Mao Q, Kawaguchi AT, Mizobata S, Motterlini R, Foresti R, Kitagishi H. Sensitive quantification of carbon monoxide in vivo reveals a protective role of circulating hemoglobin in CO intoxication. Commun Biol 2021; 4:425. [PMID: 33782534 PMCID: PMC8007703 DOI: 10.1038/s42003-021-01880-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 02/17/2021] [Indexed: 12/14/2022] Open
Abstract
Carbon monoxide (CO) is a gaseous molecule known as the silent killer. It is widely believed that an increase in blood carboxyhemoglobin (CO-Hb) is the best biomarker to define CO intoxication, while the fact that CO accumulation in tissues is the most likely direct cause of mortality is less investigated. There is no reliable method other than gas chromatography to accurately determine CO content in tissues. Here we report the properties and usage of hemoCD1, a synthetic supramolecular compound composed of an iron(II)porphyrin and a cyclodextrin dimer, as an accessible reagent for a simple colorimetric assay to quantify CO in biological samples. The assay was validated in various organ tissues collected from rats under normal conditions and after exposure to CO. The kinetic profile of CO in blood and tissues after CO treatment suggested that CO accumulation in tissues is prevented by circulating Hb, revealing a protective role of Hb in CO intoxication. Furthermore, hemoCD1 was used in vivo as a CO removal agent, showing that it acts as an effective adjuvant to O2 ventilation to eliminate residual CO accumulated in organs, including the brain. These findings open new therapeutic perspectives to counteract the toxicity associated with CO poisoning. Mao et al. report highly sensitive quantification of carbon monoxide with a simple colorimetric assay, exploiting a synthetic supramolecular compound, hemoCD1. It can reveal distribution of CO in organs including the brain and can also serve as a CO scavenger for residual CO accumulated in organs. Finally, the authors showed circulating hemoglobin plays a protective role in CO intoxication.
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Affiliation(s)
- Qiyue Mao
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto, Japan
| | - Akira T Kawaguchi
- Cell Transplantation and Regenerative Medicine, Tokai University, Isehara, Kanagawa, Japan
| | - Shun Mizobata
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto, Japan
| | | | - Roberta Foresti
- University Paris Est Creteil, INSERM, IMRB, Creteil, France.
| | - Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto, Japan.
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11
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Wang H, Yang Y, Yuan B, Ni XL, Xu JF, Zhang X. Cucurbit[10]uril-Encapsulated Cationic Porphyrins with Enhanced Fluorescence Emission and Photostability for Cell Imaging. ACS APPLIED MATERIALS & INTERFACES 2021; 13:2269-2276. [PMID: 33411497 DOI: 10.1021/acsami.0c18725] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Porphyrins are widely applied for imaging, diagnosis, and treatment of diseases because of their excellent photophysical properties. However, porphyrins easily tend to aggregate driven by hydrophobic interaction and π-π stacking in an aqueous medium, which causes fluorescence quenching of the porphyrins as well as limitation of cell uptake and intracellular accumulation. Herein, cucurbit[10]uril (CB[10]) was used to fully encapsulate cationic porphyrin (CPor) in the large cavity with strong binding affinity in aqueous solutions, and the CPor aggregates were efficient disassembled, companying remarkable enhancing its fluorescence intensity. The CB[10]-based host-guest complex provided excellent protection to CPor, resulting in less susceptibility to oxidation and imparting higher photostability to CPor for cell imaging. In addition, by complexation with CB[10], it was found that the fluorescence signals and photostability of CPor were also effectively improved in cells with different reactive oxygen species levels. It is highly anticipated that the large macrocyclic host cavity-triggered large-guest encapsulation strategy in this work will provide a convenient and efficient method for designing supramolecular porphyrin dyes, thus broadening the diagnosis and imaging application in cells and microorganisms.
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Affiliation(s)
- Hua Wang
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yuchong Yang
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Bin Yuan
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xin-Long Ni
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Department of Chemistry, Guizhou University, Guiyang 550025, China
| | - Jiang-Fei Xu
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xi Zhang
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, China
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12
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Kitagishi H, Kano K. Synthetic heme protein models that function in aqueous solution. Chem Commun (Camb) 2021; 57:148-173. [DOI: 10.1039/d0cc07044k] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Supramolecular porphyrin–cyclodextrin complexes act as biomimetic heme protein models in aqueous solution.
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Affiliation(s)
- Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry
- Faculty of Science and Engineering
- Doshisha University
- Kyoto 610-0321
- Japan
| | - Koji Kano
- Department of Molecular Chemistry and Biochemistry
- Faculty of Science and Engineering
- Doshisha University
- Kyoto 610-0321
- Japan
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13
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Sowa A, Voskuhl J. Host-guest complexes - Boosting the performance of photosensitizers. Int J Pharm 2020; 586:119595. [PMID: 32629069 DOI: 10.1016/j.ijpharm.2020.119595] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/26/2020] [Accepted: 06/27/2020] [Indexed: 12/20/2022]
Abstract
In this review, we will show the diversity of supramolecular host-guest complexes of cyclodextrins, cucurbit[n]urils, calix[n]- and pillar[n]arenes with photosensitizers, like porphyrins and phthalocyanines. Host-guest complexes are one of the main building blocks in supramolecular chemistry. For example, they have been widely used to encapsulate hydrophobic drug molecules to enhance the bioavailability in the human body. In these days of multiresistant bacteria and difficulties in cancer therapy, supramolecular host-guest systems with photosensitizers for the photodynamic therapy(PDT) gain more and more interest. In general, photosensitizers with a (large) conjugated aromatic π-system are used, which tend to π-πstacking in aqueous media suppressing the cell toxicity by singletoxygen production quenching. This can be overcome by the formation of host-guest complexes. Besides that, encapsulation of the photosensitizers in host molecules can enhance the solubility, increase cellular uptake, lead to hydrogels, rotaxanes, and switchable systems.
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Affiliation(s)
- Andrea Sowa
- Institute of Organic Chemistry, University of Duisburg-Essen, Universitätsstrasse 2, 45141 Essen, Germany
| | - Jens Voskuhl
- Institute of Organic Chemistry, University of Duisburg-Essen, Universitätsstrasse 2, 45141 Essen, Germany.
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14
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Liu W, Lin C, Weber JA, Stern CL, Young RM, Wasielewski MR, Stoddart JF. Cyclophane-Sustained Ultrastable Porphyrins. J Am Chem Soc 2020; 142:8938-8945. [PMID: 32243141 DOI: 10.1021/jacs.0c02311] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We report the encapsulation of free-base and zinc porphyrins by a tricyclic cyclophane receptor with subnanomolar binding affinities in water. The high affinities are sustained by the hydrophobic effect and multiple [CH···π] interactions covering large [π···π] stacking surfaces between the substrate porphyrins and the receptor. We discovered two co-conformational isomers of the 1:1 complex, where the porphyrin is orientated differently inside the binding cavity of the receptor on account of its tricyclic nature. The photophysical properties and chemical reactivities of the encapsulated porphyrins are modulated to a considerable extent by the receptor. Improved fluorescence quantum yields, red-shifted absorptions and emissions, and nearly quantitative energy transfer processes highlight the emergent photophysical enhancements. The encapsulated porphyrins enjoy unprecedented chemical stabilities, where their D/H exchange, protonation, and solvolysis under extremely acidic conditions are completely blocked. We anticipate that the ultrahigh stabilities and improved optical properties of these encapsulated porphyrins will find applications in single-molecule materials, artificial photodevices, and biomedical appliances.
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Affiliation(s)
- Wenqi Liu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Chenjian Lin
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Jacob A Weber
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Charlotte L Stern
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Ryan M Young
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Michael R Wasielewski
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - J Fraser Stoddart
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Institute for Molecular Design and Synthesis, Tianjin University, Tianjin 300072, China.,School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
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15
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Kučáková K, Dolenský B. Molecular structure study of a heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin complex of cholesterol. Steroids 2020; 155:108555. [PMID: 31866545 DOI: 10.1016/j.steroids.2019.108555] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 11/27/2019] [Accepted: 12/06/2019] [Indexed: 12/23/2022]
Abstract
Heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin (2) and cholesterol form a water-soluble complex 3. We performed several NMR studies, particularly 1H, 13C, 2D NOESY and DOSY, at various temperatures on 500 and 950 MHz instruments. We discovered that the complex 3 is unstable above 57 °C in heavy water, while it is kinetically stable enough to be studied by NMR in detail at 1 °C. We demonstrated the formation of a face-to-face 2:1 complex with a binding constant of approximately 2.2 × 106 M-2.
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Affiliation(s)
- Karolína Kučáková
- University of Chemistry and Technology Prague, Department of Analytical Chemistry, Technická 5, 166 28 Prague 6, Czech Republic
| | - Bohumil Dolenský
- University of Chemistry and Technology Prague, Department of Analytical Chemistry, Technická 5, 166 28 Prague 6, Czech Republic.
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16
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Liu G, Hong J, Ma K, Wan Y, Zhang X, Huang Y, Kang K, Yang M, Chen J, Deng S. Porphyrin Trio−Pendant fullerene guest as an In situ universal probe of high ECL efficiency for sensitive miRNA detection. Biosens Bioelectron 2020; 150:111963. [DOI: 10.1016/j.bios.2019.111963] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 10/25/2019] [Accepted: 12/12/2019] [Indexed: 01/08/2023]
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17
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Prigorchenko E, Ustrnul L, Borovkov V, Aav R. Heterocomponent ternary supramolecular complexes of porphyrins: A review. J PORPHYR PHTHALOCYA 2020. [DOI: 10.1142/s108842461930026x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Porphyrins are prominent host molecules which are widely used due to their structural characteristics and directional interaction sites. This review summarizes non-covalently bound ternary complexes of porphyrins, constructed from at least three non-identical species. Progress in supramolecular chemistry allows the creation of complex molecular machinery tools, such as rotors, motors and switches from relatively simple structures in a single self-assembly step. In the current review, we highlight the collection of sophisticated molecular ensembles including sandwich-type complexes, cages, capsules, tweezers, rotaxanes, and supramolecular architectures mediating oxygen-binding and oxidation reactions. These diverse structures have high potential to be applied in sensing, production of new smart materials as well as in medical science.
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Affiliation(s)
- Elena Prigorchenko
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, Tallinn 12618, Estonia
| | - Lukas Ustrnul
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, Tallinn 12618, Estonia
| | - Victor Borovkov
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, Tallinn 12618, Estonia
- College of Chemistry and Materials Science, South-Central University for Nationalities, 182 Minzu Road, Hongshan, Wuhan 430074, China
| | - Riina Aav
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Akadeemia tee 15, Tallinn 12618, Estonia
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18
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Basak T, Frontera A, Chattopadhyay S. A theoretical insight into non-covalent supramolecular interactions in the solid state structures of two octahedral iron( iii) complexes. CrystEngComm 2020. [DOI: 10.1039/d0ce00955e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The nature and characteristics of the C–H⋯π interactions that play an important role in crystal packing of two iron(iii) complexes have been discussed. The DFT calculations have been conducted to determine the interaction energies in these complexes.
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Affiliation(s)
- Tanmoy Basak
- Department of Chemistry
- Inorganic Section
- Jadavpur University
- Kolkata-700032
- India
| | - Antonio Frontera
- Departamento de Química
- Universitat de les Illes Balears
- 07122 Palma
- Spain
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19
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Vonesch M, Wytko JA, Kitagishi H, Kano K, Weiss J. Modelling haemoproteins: porphyrins and cyclodextrins as sources of inspiration. Chem Commun (Camb) 2019; 55:14558-14565. [PMID: 31748764 DOI: 10.1039/c9cc07545c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The association of hydrophobic cavities with porphyrin derivatives has been used to mimic haemoprotein structures. The most employed cavity in this field is β-cyclodextrin (β-CD), and scaffolds combining β-CDs and porphyrins are expected to inspire the combination of porphyrins and cucurbiturils in the near future. Aside from providing water solubility to various porphyrinic structures, the β-CD framework can also modulate and control the reactivity of the metal core of the porphyrin. After a general introduction of the challenges faced in the field of haemoprotein models and the binding behavior of β-CDs, this article will discuss covalent and non-covalent association of porphyrins with β-CDs. In each approach, the role of the CD differs according to the relative position of the concave CD host, either directly controlling the binding and transformation of a substrate on the metalloporphyrin or playing a dual role of controlling the water solubility and selecting the axial ligand of the metal core. The discussion will be of interest to the cucurbituril community as well as to the cavitand community, as the information provided should be useful for the design of haemoprotein mimics using cucurbiturils.
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Affiliation(s)
- Maxime Vonesch
- Institut de Chimie de Strasbourg, UMR 7177 CNRS-Université de Strasbourg, 4 rue Blaise Pascal 67000, Strasbourg, France.
| | - Jennifer A Wytko
- Institut de Chimie de Strasbourg, UMR 7177 CNRS-Université de Strasbourg, 4 rue Blaise Pascal 67000, Strasbourg, France.
| | - Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry, Doshisha University, Kyotanabe, Kyoto 610-0321, Japan.
| | - Koji Kano
- Department of Molecular Chemistry and Biochemistry, Doshisha University, Kyotanabe, Kyoto 610-0321, Japan.
| | - Jean Weiss
- Institut de Chimie de Strasbourg, UMR 7177 CNRS-Université de Strasbourg, 4 rue Blaise Pascal 67000, Strasbourg, France.
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20
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Mavridis IM, Yannakopoulou K. Porphyrinoid-Cyclodextrin Assemblies in Biomedical Research: An Update. J Med Chem 2019; 63:3391-3424. [PMID: 31808344 DOI: 10.1021/acs.jmedchem.9b01069] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Porphyrinoids, well-known cofactors in fundamental processes of life, have stimulated interest as synthetic models of natural systems and integral components of photodynamic therapy, but their utilization is compromised by self-aggregation in aqueous media. The capacity of cyclodextrins to include hydrophobic molecules in their cavity provides porphyrinoids with a protective environment against oxidation and the ability to disperse efficiently in biological fluids. Moreover, engineered cyclodextrin-porphyrinoid assemblies enhance the photodynamic abilities of porphyrinoids, can carry chemotherapeutics for synergistic modalities, and can be enriched with functions including cell recognition, tissue penetration, and imaging. This Perspective includes synthetic porphyrinoid-cyclodextrin models of proteins participating in fundamental processes, such as enzymatic catalysis, respiration, and electron transfer. In addition, since porphyrinoid-cyclodextrin systems comprise third generation photosensitizers, recent developments for their utilization in photomedicine, that is, multimodal therapy for cancer (e.g., PDT, PTT) and antimicrobial treatment, and eventually in biocompatible therapeutic or diagnostic platforms for next-generation nanomedicine and theranostics are discussed.
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Affiliation(s)
- Irene M Mavridis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patriarchou Gregoriou & 27 Neapoleos Str., Agia Paraskevi, Attiki 15341, Greece
| | - Konstantina Yannakopoulou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Patriarchou Gregoriou & 27 Neapoleos Str., Agia Paraskevi, Attiki 15341, Greece
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21
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Self-assembly of artificial peroxidase mimics from alternating copolymers with chromogenic and biocatalyst potentialities. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.05.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Kitagishi H, Saito M, Mao Q, Kiriyama A, Negi S, Kano K. Supramolecular Complexation in Biological Media: NMR Study on Inclusion of an Anionic Tetraarylporphyrin into a Per‐O‐Methylated β‐Cyclodextrin Cavity in Serum, Blood, and Urine. Chem Asian J 2019; 14:3320-3328. [DOI: 10.1002/asia.201900983] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/08/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Hiroaki Kitagishi
- Department of Molecular Chemistry and BiochemistryFaculty of Science and EngineeringDoshisha University 1-3 Tatara Miyakodani Kyotanabe Kyoto 610-0321 Japan
| | - Mai Saito
- Department of Molecular Chemistry and BiochemistryFaculty of Science and EngineeringDoshisha University 1-3 Tatara Miyakodani Kyotanabe Kyoto 610-0321 Japan
| | - Qiyue Mao
- Department of Molecular Chemistry and BiochemistryFaculty of Science and EngineeringDoshisha University 1-3 Tatara Miyakodani Kyotanabe Kyoto 610-0321 Japan
| | - Akiko Kiriyama
- Faculty of Pharmaceutical ScienceDoshisha Women's College of Liberal Arts Kyotanabe Kyoto 610-0395 Japan
| | - Shigeru Negi
- Faculty of Pharmaceutical ScienceDoshisha Women's College of Liberal Arts Kyotanabe Kyoto 610-0395 Japan
| | - Koji Kano
- Department of Molecular Chemistry and BiochemistryFaculty of Science and EngineeringDoshisha University 1-3 Tatara Miyakodani Kyotanabe Kyoto 610-0321 Japan
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23
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Zheng C, Sheng Y, Liu Y, Wan Y, Liu G, Zhang X, Yang M, Kang K, Liu J, Ma K, Deng S. Enhanced electrochemiluminescent brightness and stability of porphyrins by supramolecular pinning and pinching for sensitive zinc detection. Anal Bioanal Chem 2019; 411:4797-4806. [PMID: 30747236 DOI: 10.1007/s00216-019-01634-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 01/08/2019] [Accepted: 01/21/2019] [Indexed: 01/05/2023]
Abstract
Ultrasensitive electrochemiluminescence (ECL) detection can benefit substantially from the rational configuration of emitter-enhancer stereochemistry. Here, using zinc(II) meso-5,10,15,20-tetra(4-sulfonatophenyl)porphyrin (ZnTSPP) as a model, we demonstrate that both the ECL intensity and the photostability of this emitter were significantly improved when it was trapped in pyridyl-bridged β-cyclodextrin dimer (Py(CD)2); a synthetic enhancer that is ECL inactive. Through NMR characterization, we confirmed that ZnTSPP formed a clam-like inclusion complex involving pinning and pinching forces from the biocompatible container Py(CD)2. Up to a threefold increase in the ECL brightness of ZnTSPP was witnessed when it was encapsulated in β-CD. Absorption and emission spectroscopic data revealed that both the extended excitation lifetime and the restricted mobility of the guest contributed to the observed improvement in signal transduction within the host molecule. This bioinspired entrapment also led to a marked boost in ECL stability. With the aid of the newly identified coreactant H2O2, the hollow TSPP@Py(CD)2 system was employed to create a Zn2+-selective probe that was capable of sensitive and accurate zinc detection. The observed increase in ECL conversion and enhanced photophysical properties of this compact supramolecular assembly render it a novel template for enhancing ECL in analytical applications. Graphical abstract ᅟ.
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Affiliation(s)
- Chenyu Zheng
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China
| | - Yufeng Sheng
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China
| | - Yong Liu
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China
| | - Ying Wan
- School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China.
| | - Guang Liu
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China
| | - Xutong Zhang
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China
| | - Meng Yang
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China
| | - Kai Kang
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China
| | - Jingping Liu
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China
| | - Kefeng Ma
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China.
| | - Shengyuan Deng
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China.
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24
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Optimized synthesis of a per-O-methylated β-cyclodextrin dimer linked at the secondary face by a pyridine ligand. J INCL PHENOM MACRO 2018. [DOI: 10.1007/s10847-018-0839-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Circadian clock disruption by selective removal of endogenous carbon monoxide. Sci Rep 2018; 8:11996. [PMID: 30097595 PMCID: PMC6086871 DOI: 10.1038/s41598-018-30425-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 07/30/2018] [Indexed: 11/13/2022] Open
Abstract
Circadian rhythms are regulated by transcription-translation feedback loops (TTFL) of clock genes. Previous studies have demonstrated that core transcriptional factors, NPAS2 and CLOCK, in the TTFL can reversibly bind carbon monoxide (CO) in vitro. However, little is known about whether endogenous CO, which is continuously produced during a heme metabolic process, is involved in the circadian system. Here we show that selective removal of endogenous CO in mice considerably disrupts rhythmic expression of the clock genes. A highly selective CO scavenger, hemoCD1, which is a supramolecular complex of an iron(II)porphyrin with a per-O-methyl-β-cyclodextrin dimer, was used to remove endogenous CO in mice. Intraperitoneal administration of hemoCD1 to mice immediately reduced the amount of internal CO. The removal of CO promoted the bindings of NPAS2 and CLOCK to DNA (E-box) in the murine liver, resulting in up-regulation of the E-box-controlled clock genes (Per1, Per2, Cry1, Cry2, and Rev-erbα). Within 3 h after the administration, most hemoCD1 in mice was excreted in the urine, and heme oxygenase-1 (HO-1) was gradually induced in the liver. Increased endogenous CO production due to the overexpression of HO-1 caused dissociation of NPAS2 and CLOCK from E-box, which in turn induced down-regulation of the clock genes. The down-regulation continued over 12 h even after the internal CO level recovered to normal. The late down-regulation was ascribed to an inflammatory response caused by the endogenous CO reduction. The CO pseudo-knockdown experiments provided the clear evidence that endogenous CO contributes to regulation in the mammalian circadian clock.
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26
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Horiguchi B, Nakaya T, Ueda M, Sugikawa K, Mizuta T, Haino T, Kawata N, Ikeda A. Controllable Direction of Porphyrin Derivatives in Two Cyclodextrin Cavities. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800433] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Banri Horiguchi
- Department of Applied Chemistry; Graduate School of Engineering; Hiroshima University; 1-4-1 Kagamiyama 739-8527 Higashi-Hiroshima Japan
| | - Toshimi Nakaya
- Department of Applied Chemistry; Graduate School of Engineering; Hiroshima University; 1-4-1 Kagamiyama 739-8527 Higashi-Hiroshima Japan
| | - Masafumi Ueda
- Department of Applied Chemistry; Graduate School of Engineering; Hiroshima University; 1-4-1 Kagamiyama 739-8527 Higashi-Hiroshima Japan
- Department of Chemistry; Graduate School of Science; Kitasato University; 1-15-1 Kitasato, Minami-ku 252-0373 Sagamihara, Kanagawa Japan
| | - Kouta Sugikawa
- Department of Applied Chemistry; Graduate School of Engineering; Hiroshima University; 1-4-1 Kagamiyama 739-8527 Higashi-Hiroshima Japan
| | - Tsutomu Mizuta
- Department of Chemistry; Graduate School of Science; Hiroshima University; 1-3-1 Kagamiyama 739-8526 Higashi-Hiroshima Japan
| | - Takeharu Haino
- Department of Chemistry; Graduate School of Science; Hiroshima University; 1-3-1 Kagamiyama 739-8526 Higashi-Hiroshima Japan
| | - Naomi Kawata
- Natural Science Center for Basic Research and Development; Hiroshima University; 1-3-1 Kagamiyama 739-8526 Higashi-Hiroshima Japan
| | - Atsushi Ikeda
- Department of Applied Chemistry; Graduate School of Engineering; Hiroshima University; 1-4-1 Kagamiyama 739-8527 Higashi-Hiroshima Japan
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27
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Li ZM, Li YW, Cao XP, Chow HF, Kuck D. Biconcave and Convex-Concave Tribenzotriquinacene Dimers. J Org Chem 2018; 83:3433-3440. [PMID: 29554430 DOI: 10.1021/acs.joc.8b00375] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A new chiral tribenzotriquinacene bearing an ortho-bromoaniline nucleus was synthesized and optically resolved. The individual enantiomers, the absolute configuration of which was confirmed by single-crystal X-ray structure analysis, were stereoselectively converted into the same pyrazine-fused syn-bis-TBTQ derivative by chirality-assisted Buchwald-Hartwig amination. The corresponding diastereomeric anti-dimer was obtained alongside the syn-dimer from the racemic sample under similar reaction conditions. X-ray structure analysis of the dimers confirmed the mutual biconcave and convex-concave configuration of their TBTQ moieties and the preservation of the orthogonal orientation of the indane wings within each of them.
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Affiliation(s)
- Zhi-Min Li
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , P.R. China
| | - Ya-Wei Li
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , P.R. China
| | - Xiao-Ping Cao
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , P.R. China
| | - Hak-Fun Chow
- Department of Chemistry and Center of Novel Functional Molecules , The Chinese University of Hong Kong , Shatin , Hong Kong SAR
| | - Dietmar Kuck
- Department of Chemistry and Center for Molecular Materials (CM2) , Bielefeld University , 33615 Bielefeld , Germany
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28
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Kitagishi H, Shimoji D, Ohta T, Kamiya R, Kudo Y, Onoda A, Hayashi T, Weiss J, Wytko JA, Kano K. A water-soluble supramolecular complex that mimics the heme/copper hetero-binuclear site of cytochrome c oxidase. Chem Sci 2018; 9:1989-1995. [PMID: 29675246 PMCID: PMC5892347 DOI: 10.1039/c7sc04732k] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 01/12/2018] [Indexed: 01/16/2023] Open
Abstract
The O2 adduct of an aqueous synthetic heme/copper model system built on a porphyrin/cyclodextrin supramolecular complex has been characterized.
In mitochondria, cytochrome c oxidase (CcO) catalyses the reduction of oxygen (O2) to water by using a heme/copper hetero-binuclear active site. Here we report a highly efficient supramolecular approach for the construction of a water-soluble biomimetic model for the active site of CcO. A tridentate copper(ii) complex was fixed onto 5,10,15,20-tetrakis(4-sulfonatophenyl)porphinatoiron(iii) (FeIIITPPS) through supramolecular complexation between FeIIITPPS and a per-O-methylated β-cyclodextrin dimer linked by a (2,2′:6′,2′′-terpyridyl)copper(ii) complex (CuIITerpyCD2). The reduced FeIITPPS/CuITerpyCD2 complex reacted with O2 in an aqueous solution at pH 7 and 25 °C to form a superoxo-type FeIII–O2–/CuI complex in a manner similar to CcO. The pH-dependent autoxidation of the O2 complex suggests that water molecules gathered at the distal Cu site are possibly involved in the FeIII–O2–/CuI superoxo complex in an aqueous solution. Electrochemical analysis using a rotating disk electrode demonstrated the role of the FeTPPS/CuTerpyCD2 hetero-binuclear structure in the catalytic O2 reduction reaction.
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Affiliation(s)
- Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry , Faculty of Science and Engineering , Doshisha University , Kyotanabe , Kyoto 610-0321 , Japan .
| | - Daiki Shimoji
- Department of Molecular Chemistry and Biochemistry , Faculty of Science and Engineering , Doshisha University , Kyotanabe , Kyoto 610-0321 , Japan .
| | - Takehiro Ohta
- Picobiology Institute , Graduate School of Life Science , University of Hyogo , RSC-UH LP Center , Hyogo 679-5148 , Japan
| | - Ryo Kamiya
- Department of Molecular Chemistry and Biochemistry , Faculty of Science and Engineering , Doshisha University , Kyotanabe , Kyoto 610-0321 , Japan .
| | - Yasuhiro Kudo
- Department of Molecular Chemistry and Biochemistry , Faculty of Science and Engineering , Doshisha University , Kyotanabe , Kyoto 610-0321 , Japan .
| | - Akira Onoda
- Department of Applied Chemistry , Graduate School of Engineering , Osaka University , 2-1 Yamadaoka , Suita 565-0871 , Japan
| | - Takashi Hayashi
- Department of Applied Chemistry , Graduate School of Engineering , Osaka University , 2-1 Yamadaoka , Suita 565-0871 , Japan
| | - Jean Weiss
- Institut de Chimie de Strasbourg , UMR 7177 , CNRS , Université de Strasbourg , 4 Rue Blaise Pascal , 67000 Strasbourg , France
| | - Jennifer A Wytko
- Institut de Chimie de Strasbourg , UMR 7177 , CNRS , Université de Strasbourg , 4 Rue Blaise Pascal , 67000 Strasbourg , France
| | - Koji Kano
- Department of Molecular Chemistry and Biochemistry , Faculty of Science and Engineering , Doshisha University , Kyotanabe , Kyoto 610-0321 , Japan .
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29
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Almeida-Marrero V, van de Winckel E, Anaya-Plaza E, Torres T, de la Escosura A. Porphyrinoid biohybrid materials as an emerging toolbox for biomedical light management. Chem Soc Rev 2018; 47:7369-7400. [DOI: 10.1039/c7cs00554g] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The present article reviews the most important developing strategies in light-induced nanomedicine, based on the combination of porphyrinoid photosensitizers with a wide variety of biomolecules and biomolecular assemblies.
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Affiliation(s)
| | | | - Eduardo Anaya-Plaza
- Departamento de Química Orgánica
- Universidad Autónoma de Madrid
- Cantoblanco 28049
- Spain
| | - Tomás Torres
- Departamento de Química Orgánica
- Universidad Autónoma de Madrid
- Cantoblanco 28049
- Spain
- Institute for Advanced Research in Chemistry (IAdChem)
| | - Andrés de la Escosura
- Departamento de Química Orgánica
- Universidad Autónoma de Madrid
- Cantoblanco 28049
- Spain
- Institute for Advanced Research in Chemistry (IAdChem)
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30
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Minegishi S, Yumura A, Miyoshi H, Negi S, Taketani S, Motterlini R, Foresti R, Kano K, Kitagishi H. Detection and Removal of Endogenous Carbon Monoxide by Selective and Cell-Permeable Hemoprotein Model Complexes. J Am Chem Soc 2017; 139:5984-5991. [PMID: 28388069 DOI: 10.1021/jacs.7b02229] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Carbon monoxide (CO) is produced in mammalian cells during heme metabolism and serves as an important signaling messenger. Here we report the bioactive properties of selective CO scavengers, hemoCD1 and its derivative R8-hemoCD1, which have the ability to detect and remove endogenous CO in cells. HemoCD1 is a supramolecular hemoprotein-model complex composed of 5,10,15,20-tetrakis(4-sulfonatophenyl)porphinatoiron(II) and a per-O-methylated β-cyclodextrin dimer having an pyridine linker. We demonstrate that hemoCD1 can be used effectively to quantify endogenous CO in cell lysates by a simple spectrophotometric method. The hemoCD1 assay detected ca. 260 pmol of CO in 106 hepatocytes, which was well-correlated with the amount of intracellular bilirubin, the final breakdown product of heme metabolism. We then covalently attached an octaarginine peptide to a maleimide-appended hemoCD1 to synthesize R8-hemoCD1, a cell-permeable CO scavenger. Indeed, R8-hemoCD1 was taken up by intact cells and captured intracellular CO with high efficiency. Moreover, we revealed that removal of endogenous CO by R8-hemoCD1 in cultured macrophages led to a significant increase (ca. 2.5-fold) in reactive oxygen species production and exacerbation of inflammation after challenge with lipopolysaccharide. Thus, R8-hemoCD1 represents a powerful expedient for exploring specific and still unidentified biological functions of CO in cells.
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Affiliation(s)
- Saika Minegishi
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University , Kyotanabe, Kyoto 610-0321, Japan
| | - Aki Yumura
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University , Kyotanabe, Kyoto 610-0321, Japan
| | - Hirotsuna Miyoshi
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University , Kyotanabe, Kyoto 610-0321, Japan
| | - Shigeru Negi
- Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts , Kyotanabe, Kyoto 610-0395, Japan
| | - Shigeru Taketani
- Department of Microbiology, Kansai Medical University , Hirakata, Osaka 573-1010, Japan
| | - Roberto Motterlini
- Inserm U955 , Team 12, Créteil 94000, France.,Université Paris Est , Faculty of Medicine, Créteil 94000, France
| | - Roberta Foresti
- Inserm U955 , Team 12, Créteil 94000, France.,Université Paris Est , Faculty of Medicine, Créteil 94000, France
| | - Koji Kano
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University , Kyotanabe, Kyoto 610-0321, Japan
| | - Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University , Kyotanabe, Kyoto 610-0321, Japan
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31
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Kitagishi H, Mao Q, Kitamura N, Kita T. HemoCD as a Totally Synthetic Artificial Oxygen Carrier: Improvements in the Synthesis and O 2 /CO Discrimination. Artif Organs 2017; 41:372-380. [PMID: 28326558 DOI: 10.1111/aor.12870] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 08/09/2016] [Accepted: 08/26/2016] [Indexed: 12/17/2022]
Abstract
HemoCD, which is composed of an iron(II)porphyrin such as 5,10,15,20-tetrakis(4-sulfonatophenyl)porphinatoiron(II) (Fe(II)TPPS) and a cyclodextrin (CD) dimer having a pyridine linker, represents a synthetic hemoglobin (Hb) model compound that exhibits reversible oxygen (O2 ) binding ability in aqueous solution at an ambient temperature. Therefore, hemoCD has the potential to be used as a totally synthetic artificial oxygen carrier. In this article, we describe the improvements of hemoCD related to its synthesis and O2 /CO selectivity. The synthesis procedure of the CD dimer of hemoCD was re-examined, and the CD dimer was successively synthesized from inexpensive β-CD with a 38% yield (three-steps), which enabled us to obtain the CD dimer in gram-quantities. The O2 /CO selectivity of hemoCD was also markedly improved using an iron(II)porphyrin having a carboxylate group at the distal site of hemoCD.
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Affiliation(s)
- Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto, Japan
| | - Qiyue Mao
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto, Japan
| | - Naoya Kitamura
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto, Japan
| | - Takahiro Kita
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto, Japan
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32
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Kitagishi H, Kurosawa S, Kano K. Intramolecular OxidativeO-Demethylation of an Oxoferryl Porphyrin Complexed with a Per-O-methylated β-Cyclodextrin Dimer. Chem Asian J 2016; 11:3213-3219. [DOI: 10.1002/asia.201601097] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Hiroaki Kitagishi
- Department of Molecular; Chemistry and Biochemistry; Faculty of Science and Engineering; Doshisha University; 1-3 Tatara Miyakodani Kyotanabe Kyoto 610-0321 Japan
| | - Shun Kurosawa
- Department of Molecular; Chemistry and Biochemistry; Faculty of Science and Engineering; Doshisha University; 1-3 Tatara Miyakodani Kyotanabe Kyoto 610-0321 Japan
| | - Koji Kano
- Department of Molecular; Chemistry and Biochemistry; Faculty of Science and Engineering; Doshisha University; 1-3 Tatara Miyakodani Kyotanabe Kyoto 610-0321 Japan
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33
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Hemoglobin-mimetic oxygen adsorbent prepared via self-assembly of cysteinyl bolaamphiphiles. Colloids Surf B Biointerfaces 2016; 142:360-366. [DOI: 10.1016/j.colsurfb.2016.03.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 01/30/2016] [Accepted: 03/03/2016] [Indexed: 01/28/2023]
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34
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Kitagishi H, Minegishi S, Yumura A, Negi S, Taketani S, Amagase Y, Mizukawa Y, Urushidani T, Sugiura Y, Kano K. Feedback Response to Selective Depletion of Endogenous Carbon Monoxide in the Blood. J Am Chem Soc 2016; 138:5417-25. [DOI: 10.1021/jacs.6b02211] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry,
Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321, Japan
| | - Saika Minegishi
- Department of Molecular Chemistry and Biochemistry,
Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321, Japan
| | - Aki Yumura
- Department of Molecular Chemistry and Biochemistry,
Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321, Japan
| | - Shigeru Negi
- Faculty
of Pharmaceutical Sciences, Doshisha Women’s College of Liberal Arts, Kyotanabe,
Kyoto 610-0395, Japan
| | - Shigeru Taketani
- Department of Microbiology, Kansai Medical University, Hirakata, Osaka 573-1010, Japan
| | - Yoko Amagase
- Faculty
of Pharmaceutical Sciences, Doshisha Women’s College of Liberal Arts, Kyotanabe,
Kyoto 610-0395, Japan
| | - Yumiko Mizukawa
- Faculty
of Pharmaceutical Sciences, Doshisha Women’s College of Liberal Arts, Kyotanabe,
Kyoto 610-0395, Japan
| | - Tetsuro Urushidani
- Faculty
of Pharmaceutical Sciences, Doshisha Women’s College of Liberal Arts, Kyotanabe,
Kyoto 610-0395, Japan
| | - Yukio Sugiura
- Faculty
of Pharmaceutical Sciences, Doshisha Women’s College of Liberal Arts, Kyotanabe,
Kyoto 610-0395, Japan
| | - Koji Kano
- Department of Molecular Chemistry and Biochemistry,
Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321, Japan
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35
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Shen L, Qu R, Shi H, Huang F, An Y, Shi L. A biocompatible cobaltporphyrin-based complex micelle constructed via supramolecular assembly for oxygen transfer. Biomater Sci 2016; 4:857-62. [PMID: 27009911 DOI: 10.1039/c6bm00046k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a complex micelle as an oxygen nano-carrier is constructed through the hierarchical assembly of the diblock copolymer poly(ethylene glycol)-block-poly(l-lysine) (PEG-b-PLys), tetrakis(4-sulfonatophenyl)porphinato cobalt(ii) (Co(ii)TPPS), a heptapeptide (Cys-His-His-His-His-His-His) and heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin (TM-β-CD). Co(ii)TPPS was encapsulated into the cavities of TM-β-CDs driven by the host-guest interaction so that the irreversible formation of a μ-oxo-dimer of Co(ii)TPPS can be effectively prevented. The imidazole groups of the heptapeptide were selected as good axial ligands coordinating to the centric cobalt of Co(ii)TPPS, which subtly constituted the five-coordinated precursor serving as an active functional centre for oxygen binding. The sixth position of Co(ii)TPPS can bind oxygen. Furthermore, the host-guest inclusion (TM-β-CD/Co(ii)TPPS) was loaded into the hydrophobic core of the complex micelle and tightly fixed with PLys chains. The hydrophilic PEG blocks stretched in the aqueous solution constitute the shells which stabilize the structure of the complex micelle as well as impart the complex micelle sufficient blood circulation time. Moreover, the complex micelle exhibited excellent biocompatibility and cellular uptake. Therefore, the rationally designed amphiphilic structure can work as promising artificial O2 carriers in vivo. Potentially, the complex micelle can be expected to change the anaerobic microenvironment and find applications in the repair of the cells damaged by cellular hypoxia.
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Affiliation(s)
- Liangliang Shen
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Institute of Polymer Chemistry, Nankai University, Tianjin, 300071, P.R. China.
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36
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Xue SS, Zhao M, Ke ZF, Cheng BC, Su H, Cao Q, Cao ZK, Wang J, Ji LN, Mao ZW. Enantioselective Hydrolysis of Amino Acid Esters Promoted by Bis(β-cyclodextrin) Copper Complexes. Sci Rep 2016; 6:22080. [PMID: 26916830 PMCID: PMC4768151 DOI: 10.1038/srep22080] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 02/05/2016] [Indexed: 11/30/2022] Open
Abstract
It is challenging to create artificial catalysts that approach enzymes with regard to catalytic efficiency and selectivity. The enantioselective catalysis ranks the privileged characteristic of enzymatic transformations. Here, we report two pyridine-linked bis(β-cyclodextrin) (bisCD) copper(II) complexes that enantioselectively hydrolyse chiral esters. Hydrolytic kinetic resolution of three pairs of amino acid ester enantiomers (S1–S3) at neutral pH indicated that the “back-to-back” bisCD complex CuL1 favoured higher catalytic efficiency and more pronounced enantioselectivity than the “face-to-face” complex CuL2. The best enantioselectivity was observed for N-Boc-phenylalanine 4-nitrophenyl ester (S2) enantiomers promoted by CuL1, which exhibited an enantiomer selectivity of 15.7. We observed preferential hydrolysis of L-S2 by CuL1, even in racemic S2, through chiral high-performance liquid chromatography (HPLC). We demonstrated that the enantioselective hydrolysis was related to the cooperative roles of the intramolecular flanking chiral CD cavities with the coordinated copper ion, according to the results of electrospray ionization mass spectrometry (ESI-MS), inhibition experiments, rotating-frame nuclear Overhauser effect spectroscopy (ROESY), and theoretical calculations. Although the catalytic parameters lag behind the level of enzymatic transformation, this study confirms the cooperative effect of the first and second coordination spheres of artificial catalysts in enantioselectivity and provides hints that may guide future explorations of enzyme mimics.
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Affiliation(s)
- Shan-Shan Xue
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Meng Zhao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Zhuo-Feng Ke
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Bei-Chen Cheng
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Hua Su
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Qian Cao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Zhen-Kun Cao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Jun Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Liang-Nian Ji
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Zong-Wan Mao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China
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37
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Kishimoto K, Nakamura M, Kobayashi K. Doubly Cavitand-Capped Porphyrin Capsule by Hydrogen Bonds. Chemistry 2016; 22:2629-33. [PMID: 26728330 DOI: 10.1002/chem.201504893] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Indexed: 11/08/2022]
Abstract
The components of a 1:2 mixture of meso-tetrakis(4-dodecyl-3,5-dihydroxyphenyl)porphyrin (1) and a bowl-shaped tetrakis(4-pyridylethynyl)cavitand (2) in CDCl3 or C6 D6 self-assemble quantitatively into the doubly cavitand-capped porphyrin capsule 2⋅1⋅2 through eight ArOH⋅⋅⋅Npy hydrogen bonds. Capsule 2⋅1⋅2 possesses two cavities divided by the porphyrin ring and encapsulates two molecules of 1-acetoxy-3,5-dimethoxybenzene (G) as a guest to form G/G@(2⋅1⋅2). Remarkable solvent effect was observed, in which the apparent association constant of 2⋅1⋅2 with G in C6 D6 was much greater than that in CDCl3.
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Affiliation(s)
- Kazuki Kishimoto
- Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Munechika Nakamura
- Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Kenji Kobayashi
- Department of Chemistry, Faculty of Science, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.
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38
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Zhao L, Qu R, Li A, Ma R, Shi L. Cooperative self-assembly of porphyrins with polymers possessing bioactive functions. Chem Commun (Camb) 2016; 52:13543-13555. [DOI: 10.1039/c6cc05449h] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This review covers recent research on design strategies for the cooperative self-assembly of porphyrins with polymers and its implementation as bioactive assembly.
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Affiliation(s)
- Lizhi Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes
- School of Materials Science and Engineering
- Tianjin Polytechnic University
- Tianjin
- P. R. China
| | - Rui Qu
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Ang Li
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Rujiang Ma
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
| | - Linqi Shi
- State Key Laboratory of Medicinal Chemical Biology
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
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39
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Hu P, Chen Y, Li JJ, Liu Y. Construction, Enzyme Response, and Substrate Capacity of a Hyaluronan-Cyclodextrin Supramolecular Assembly. Chem Asian J 2015; 11:505-11. [PMID: 26556213 DOI: 10.1002/asia.201501029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Indexed: 01/08/2023]
Abstract
A supramolecular assembly was constructed with a cationic cyclodextrin (EICD) and native hyaluronan (HA). The cationic carboxylic ester pendants on HA support hyaluronidase (HAase)-responsive sites and the EICD supports artificial carboxylic esterase responsive sites. Substrate-binding models were investigated by using environment-sensitive fluorescence probes 2-p-toluidino-6-naphthalenesulfoniate sodium (2,6-TNS) and thioflavin T (ThT). On a HA/EICD assembly, EICD was able to bind an anionic substrate and HA and EICD constructed the cationic substrate binding site together. This assembly could be used as a sequential dual-substrate carrier.
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Affiliation(s)
- Ping Hu
- Department Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Yong Chen
- Department Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P.R. China.,Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, 300071, P.R. China
| | - Jing-Jing Li
- Department Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Yu Liu
- Department Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P.R. China. .,Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, 300071, P.R. China.
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40
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Kryjewski M, Goslinski T, Mielcarek J. Functionality stored in the structures of cyclodextrin–porphyrinoid systems. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.04.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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41
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Kitagishi H, Kawasaki H, Kano K. Bioconjugation of Serum Albumin to a Maleimide-appended Porphyrin/Cyclodextrin Supramolecular Complex as an Artificial Oxygen Carrier in the Bloodstream. Chem Asian J 2015; 10:1768-75. [DOI: 10.1002/asia.201500451] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Indexed: 12/17/2022]
Affiliation(s)
- Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry; Faculty of Science and Engineering; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe Kyoto 610-0321 Japan
| | - Hiroki Kawasaki
- Department of Molecular Chemistry and Biochemistry; Faculty of Science and Engineering; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe Kyoto 610-0321 Japan
| | - Koji Kano
- Department of Molecular Chemistry and Biochemistry; Faculty of Science and Engineering; Doshisha University; 1-3 Tatara Miyakodani, Kyotanabe Kyoto 610-0321 Japan
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42
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Lohse M, von Krbek LKS, Radunz S, Moorthy S, Schalley CA, Hecht S. Discrete multiporphyrin pseudorotaxane assemblies from di- and tetravalent porphyrin building blocks. Beilstein J Org Chem 2015; 11:748-62. [PMID: 26124877 PMCID: PMC4464431 DOI: 10.3762/bjoc.11.85] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Accepted: 04/29/2015] [Indexed: 12/26/2022] Open
Abstract
Two pairs of divalent and tetravalent porphyrin building blocks carrying the complementary supramolecular crown ether/secondary ammonium ion binding motif have been synthesized and their derived pseudorotaxanes have been studied by a combination of NMR spectroscopy in solution and ESI mass spectrometry in the gas phase. By simple mixing of the components the formation of discrete dimeric and trimeric (metallo)porphyrin complexes predominates, in accordance to binding stoichiometry, while the amount of alternative structures can be neglected. Our results illustrate the power of multivalency to program the multicomponent self-assembly of specific entities into discrete functional nanostructures.
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Affiliation(s)
- Mirko Lohse
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany. ; Tel: +49 (0)30 2093-7308
| | - Larissa K S von Krbek
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany. ; Tel: +49(0)308385-2639
| | - Sebastian Radunz
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany. ; Tel: +49 (0)30 2093-7308
| | - Suresh Moorthy
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany. ; Tel: +49(0)308385-2639
| | - Christoph A Schalley
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany. ; Tel: +49(0)308385-2639
| | - Stefan Hecht
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany. ; Tel: +49 (0)30 2093-7308
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43
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Wu Y, Shi R, Wu YL, Holcroft JM, Liu Z, Frasconi M, Wasielewski MR, Li H, Stoddart JF. Complexation of Polyoxometalates with Cyclodextrins. J Am Chem Soc 2015; 137:4111-8. [DOI: 10.1021/ja511713c] [Citation(s) in RCA: 124] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yilei Wu
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Rufei Shi
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Department
of Chemistry, Loras College, 1450 Alta Vista Street, Dubuque, Iowa 52001, United States
| | - Yi-Lin Wu
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - James M. Holcroft
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Zhichang Liu
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Marco Frasconi
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Michael R. Wasielewski
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
| | - Hui Li
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
- Key
Laboratory of Cluster Science of Ministry of Education, School of
Chemistry, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - J. Fraser Stoddart
- Department
of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
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Yoshikiyo K, Shinjo M, Matsui Y, Yamamoto T. Regioselectivity in the formation of di- and tri-6-O-mesitylenesulfonates of α-cyclodextrin. Carbohydr Res 2015; 401:58-63. [PMID: 25464082 DOI: 10.1016/j.carres.2014.10.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 10/23/2014] [Accepted: 10/27/2014] [Indexed: 11/29/2022]
Abstract
The quantitative analysis of the reaction products for α-cyclodextrin (α-CD) with mesitylenesulfonyl chloride (MessCl) showed that di- and tri-mesitylenesulfonylation of the primary hydroxy groups of α-CD is regioselective. The reaction of mono-6-O-mesitylenesulfonyl-α-CD with MessCl in pyridine gave less 6(A),6(C)-di-O-mesitylenesulfonyl-α-CD than 6(A),6(B)-di-O-mesitylenesulfonyl-α-CD. The reaction of 6(A),6(D)-di-O-mesitylenesulfonyl-α-CD with MessCl gave less 6(A),6(B),6(E)-tri-O-mesitylenesulfonyl-α-CD than 6(A),6(B),6(D)-tri-O-mesitylenesulfonyl-α-CD. These results indicate that the mesitylenesulfonyl group attached to glucopyranose-A (Glc-A) retards further mesitylenesulfonylation of the primary hydroxy group of Glc-C. The (1)H NMR spectra of these modified α-CDs showed that the signal for the primary hydroxy and anomeric protons of Glc-C are significantly shifted upfield by the mesitylenesulfonyl group of Glc-A.
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Affiliation(s)
- Keisuke Yoshikiyo
- Faculty of Life and Environmental Science, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan.
| | - Misaki Shinjo
- Faculty of Life and Environmental Science, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan
| | - Yoshihisa Matsui
- Faculty of Life and Environmental Science, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan
| | - Tatsuyuki Yamamoto
- Faculty of Life and Environmental Science, Shimane University, 1060 Nishikawatsu, Matsue, Shimane 690-8504, Japan
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45
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Hu Q, Hu W, Kong J, Zhang X. Ultrasensitive electrochemical DNA biosensor by exploiting hematin as efficient biomimetic catalyst toward in situ metallization. Biosens Bioelectron 2015; 63:269-275. [DOI: 10.1016/j.bios.2014.07.034] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 07/07/2014] [Accepted: 07/12/2014] [Indexed: 10/25/2022]
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46
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Watanabe K, Suzuki T, Kitagishi H, Kano K. Reaction between a haemoglobin model compound and hydrosulphide in aqueous solution. Chem Commun (Camb) 2015; 51:4059-61. [DOI: 10.1039/c5cc00057b] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The reaction between hydrosulphide and a haemoglobin model compound, composed of a Fe(iii)-porphyrin and a cyclodextrin dimer possessing a pyridine-linker, was studied.
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Affiliation(s)
- Kenji Watanabe
- Graduate School of Pharmaceutical Sciences
- Kyushu University
- Fukuoka 812-8582
- Japan
| | - Toshikane Suzuki
- Department of Molecular Chemistry and Biochemistry
- Faculty of Science and Engineering
- Doshisha University
- Kyotanabe
- Japan
| | - Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry
- Faculty of Science and Engineering
- Doshisha University
- Kyotanabe
- Japan
| | - Koji Kano
- Department of Molecular Chemistry and Biochemistry
- Faculty of Science and Engineering
- Doshisha University
- Kyotanabe
- Japan
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47
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Kitagishi H, Minami K, Kano K. Intracellular Delivery of Anionic meso-Tetraarylporphyrin–Per-O-methylated β-Cyclodextrin Supramolecular Complexes by an Oligoarginine Carrier Peptide. CHEM LETT 2014. [DOI: 10.1246/cl.140298] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University
| | - Keiko Minami
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University
| | - Koji Kano
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University
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48
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Zhao J, Lu X, Wang Y, Tan TTY. Surface-up constructed tandem-inverted bilayer cyclodextrins for enhanced enantioseparation and adsorption. J Chromatogr A 2014; 1343:101-8. [DOI: 10.1016/j.chroma.2014.03.061] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 03/20/2014] [Accepted: 03/23/2014] [Indexed: 11/27/2022]
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49
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Design on head-to-tail directly linked homogeneous and heterogeneous cyclodextrin dimers and their evaluation of hydrophobic cavity. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.128] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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50
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Qu R, Shen L, Chai Z, Jing C, Zhang Y, An Y, Shi L. Hemin-block copolymer micelle as an artificial peroxidase and its applications in chromogenic detection and biocatalysis. ACS APPLIED MATERIALS & INTERFACES 2014; 6:19207-16. [PMID: 25286878 DOI: 10.1021/am505232h] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Following an inspiration from the fine structure of natural peroxidases, such as horseradish peroxidase (HRP), an artificial peroxidase was constructed through the self-assembly of diblock copolymers and hemin, which formed a functional micelle with peroxidase-like activity. The pyridine moiety in block copolymer poly(ethylene glycol)-block-poly(4-vinylpyridine) (PEG-b-P4VP) can coordinate with hemin, and thus hemin is present in a five-coordinate complex with an open site for binding substrates, which mimics the microenvironment of heme in natural peroxidases. The amphiphilic core-shell structure of the micelle and the coordination interaction of the polymer to the hemin inhibit the formation of hemin μ-oxo dimers, and thereby enhance the stability of hemin in the water phase. Hemin-micelles exhibited excellent catalytic performance in the oxidation of phenolic and azo compounds by H2O2. In comparison with natural peroxidases, hemin-micelles have higher catalytic activity and better stability over wide temperature and pH ranges. Hemin-micelles can be used as a detection system for H2O2 with chromogenic substrates, and they anticipate the possibility of constructing new biocatalysts tailored to specific functions.
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Affiliation(s)
- Rui Qu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
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