1
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Park HY, Choi HR, Kim YB, Oh SK, Kim T, Yang HS, In J. Chronic exposure to dexamethasone may not affect sugammadex reversal of rocuronium-induced neuromuscular blockade: an in vivo study on rats. Anesth Pain Med (Seoul) 2023; 18:275-283. [PMID: 37468197 PMCID: PMC10410550 DOI: 10.17085/apm.23021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/14/2023] [Accepted: 05/22/2023] [Indexed: 07/21/2023] Open
Abstract
BACKGROUND Chronic glucocorticoid exposure is associated with resistance to nondepolarizing neuromuscular blocking agents. Therefore, we hypothesized that sugammadex-induced recovery would occur more rapidly in subjects exposed to chronic dexamethasone compared to those who were not exposed. This study evaluated the sugammadex-induced recovery profile after neuromuscular blockade (NMB) in rats exposed to chronic dexamethasone. METHODS Sprague-Dawley rats were allocated to three groups (dexamethasone, control, and pair-fed group) for the in vivo study. The mice received daily intraperitoneal dexamethasone injections (500 μg/kg) or 0.9% saline for 15 days. To achieve complete NMB, 3.5 mg/kg rocuronium was administered on the sixteenth day. The recovery time to a train-of-four ratio ≥ 0.9 was measured to evaluate the complete recovery following the sugammadex injection. RESULTS Among the groups, no significant differences were observed in the recovery time to a train-of-four ratio ≥ 0.9 following sugammadex administration (P = 0.531). The time to the second twitch of the train-of-four recovery following rocuronium administration indicated that the duration of NMB was significantly shorter in Group D than that in Groups C and P (P = 0.001). CONCLUSIONS Chronic exposure to dexamethasone did not shorten the recovery time of sugammadex-induced NMB reversal. However, the findings of this study indicated that no adjustments to sugammadex dosage or route of administration is required, even in patients undergoing long-term steroid treatment.
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Affiliation(s)
| | - Hey Ran Choi
- Department of Anesthesiology and Pain Medicine, Inje University Seoul Paik Hospital, Seoul, Korea
| | - Yong Beom Kim
- Department of Anesthesia and Pain Medicine, Gachon University Gil Medical Center, Incheon, Korea
| | - Seok Kyeong Oh
- Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
| | - Taehoon Kim
- Department of Anesthesiology and Pain Medicine, Dongguk University Ilsan Hospital, Goyang, Korea
| | - Hong Seuk Yang
- Department of Anesthesiology and Pain Medicine, Daejeon Eulji Medical Center, Eulji University School of Medicine, Daejeon, Korea
| | - Junyong In
- Department of Anesthesiology and Pain Medicine, Dongguk University Ilsan Hospital, Goyang, Korea
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2
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Yin P, Zhang S, Liu J, Liao X, Zhou G, Yang J, Wang B, Yang B. Preparation, binding behaviours and thermal stability of inclusion complexes between (Z)‐jasmone and acyclic cucurbit[n]urils. FLAVOUR FRAG J 2022. [DOI: 10.1002/ffj.3714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Peipei Yin
- R&D Center of China Tobacco Yunnan Industrial Co. Kunming China
| | - Shuqing Zhang
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming China
| | - Jing Liu
- R&D Center of China Tobacco Yunnan Industrial Co. Kunming China
| | - Xiali Liao
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming China
| | - Guiyuan Zhou
- R&D Center of China Tobacco Yunnan Industrial Co. Kunming China
| | - Jing Yang
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming China
| | - Baoxing Wang
- R&D Center of China Tobacco Yunnan Industrial Co. Kunming China
| | - Bo Yang
- Faculty of Life Science and Technology Kunming University of Science and Technology Kunming China
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3
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Kubik S. When Molecules Meet in Water-Recent Contributions of Supramolecular Chemistry to the Understanding of Molecular Recognition Processes in Water. Chemistry 2022; 11:e202200028. [PMID: 35373466 PMCID: PMC8977507 DOI: 10.1002/open.202200028] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/17/2022] [Indexed: 12/19/2022]
Abstract
Molecular recognition processes in water differ from those in organic solvents in that they are mediated to a much greater extent by solvent effects. The hydrophobic effect, for example, causes molecules that only weakly interact in organic solvents to stay together in water. Such water‐mediated interactions can be very efficient as demonstrated by many of the synthetic receptors discussed in this review, some of which have substrate affinities matching or even surpassing those of natural binders. However, in spite of considerable success in designing such receptors, not all factors determining their binding properties in water are fully understood. Existing concepts still provide plausible explanations why the reorganization of water molecules often causes receptor‐substrate interactions in water to be strongly exothermic rather than entropically favored as predicted by the classical view of the hydrophobic effect.
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Affiliation(s)
- Stefan Kubik
- Technische Universität Kaiserslautern, Fachbereich Chemie - Organische Chemie, Erwin-Schrödinger-Straße 54, 67663, Kaiserslautern, Germany
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4
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DiMaggio D, Brockett A, Shuster M, Murkli S, Zhai C, King D, O'Dowd B, Cheng M, Brady K, Briken V, Roesch MR, Isaacs L. Anthracene Walled Acyclic CB[n] Receptors: In Vitro and In Vivo Binding Properties Toward Drugs of Abuse. ChemMedChem 2022; 17:e202200046. [PMID: 35238177 DOI: 10.1002/cmdc.202200046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/01/2022] [Indexed: 11/07/2022]
Abstract
We report studies of the interaction of six acyclic CB[n]-type receptors toward a panel of drugs of abuse by a combination of isothermal titration calorimetry and 1H NMR spectroscopy. Anthracene walled acyclic CB[n] host (M3) displays highest binding affinity toward methamphetamine (Kd = 15 nM) and fentanyl (Kd = 4 nM). Host M3 is well tolerated by Hep G2 and HEK 293 cells up to 100 mM according to MTS metabolic and adenylate kinase release assays. An in vivomaximum tolerated dose study with Swiss Webster mice showed no adverse effects at the highest dose studied (44.7 mg kg-1). Host M3 is not mutagenic based on the Ames fluctuation test and does not inhibit the hERG ion channel. In vivoefficacy studies showed that pretreatment of mice with M3 significantly reduces the hyperlocomotion after treatment with methamphetamine, but M3 does not function similarly when administered 30 seconds after methamphetamine.
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Affiliation(s)
- Delaney DiMaggio
- University of Maryland at College Park, Chemistry and Biochemistry, 8051 Regents Dr., 20742, College Park, UNITED STATES
| | - Adam Brockett
- University of Maryland at College Park, Psychology, UNITED STATES
| | - Michael Shuster
- University of Maryland at College Park, Cell Biology and Molecular Genetics, UNITED STATES
| | - Steven Murkli
- University of Maryland at College Park, Chemistry and Biochemistry, UNITED STATES
| | - Canjia Zhai
- University of Maryland at College Park, Chemistry and Biochemistry, UNITED STATES
| | - David King
- University of Maryland at College Park, Chemistry and Biochemistry, UNITED STATES
| | - Brona O'Dowd
- University of Maryland at College Park, Chemistry and Biochemistry, UNITED STATES
| | - Ming Cheng
- University of Maryland at College Park, Chemistry and Biochemistry, UNITED STATES
| | - Kimberly Brady
- University of Maryland at College Park, Chemistry and Biochemistry, UNITED STATES
| | - Volker Briken
- University of Maryland at College Park, Cell Biology and Molecular Genetics, UNITED STATES
| | - Matthew R Roesch
- University of Maryland at College Park, Psychology, UNITED STATES
| | - Lyle Isaacs
- University of Maryland, College Park, Department of Chemistry and Biochemistry, Building 091, 20742, College Park, UNITED STATES
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5
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Selinger AJ, Cavallin NA, Yanai A, Birol I, Hof F. Template‐Directed Synthesis of Bivalent, Broad‐Spectrum Hosts for Neuromuscular Blocking Agents**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Allison J. Selinger
- Department of Chemistry University of Victoria 3800 Finnerty Rd. Victoria BC V8P 5C2 Canada
- Centre for Advanced Materials and Related Technology (CAMTEC) University of Victoria 3800 Finnerty Rd. Victoria BC V8W 2Y2 Canada
| | - Natalie A. Cavallin
- Department of Chemistry University of Victoria 3800 Finnerty Rd. Victoria BC V8P 5C2 Canada
- Centre for Advanced Materials and Related Technology (CAMTEC) University of Victoria 3800 Finnerty Rd. Victoria BC V8W 2Y2 Canada
| | - Anat Yanai
- Canada's Michael Smith Genome Sciences Centre BC Cancer Vancouver BC V5Z 4S6 Canada
| | - Inanc Birol
- Canada's Michael Smith Genome Sciences Centre BC Cancer Vancouver BC V5Z 4S6 Canada
- Department of Medical Genetics University of British Columbia Vancouver BC V6T 1Z3 Canada
| | - Fraser Hof
- Department of Chemistry University of Victoria 3800 Finnerty Rd. Victoria BC V8P 5C2 Canada
- Centre for Advanced Materials and Related Technology (CAMTEC) University of Victoria 3800 Finnerty Rd. Victoria BC V8W 2Y2 Canada
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6
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Brockett AT, Deng C, Shuster M, Perera S, DiMaggio D, Cheng M, Murkli S, Briken V, Roesch MR, Isaacs L. In Vitro and In Vivo Sequestration of Methamphetamine by a Sulfated Acyclic CB[n]-Type Receptor. Chemistry 2021; 27:17476-17486. [PMID: 34613641 PMCID: PMC8665056 DOI: 10.1002/chem.202102919] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Indexed: 01/26/2023]
Abstract
We report the synthesis of two new acyclic sulfated acyclic CB[n]-type receptors (TriM0 and Me4 TetM0) and investigations of their binding properties toward a panel of drugs of abuse (1-13) by a combination of 1 H NMR spectroscopy and isothermal titration calorimetry. TetM0 is the most potent receptor with Ka ≥106 M-1 toward methamphetamine, fentanyl, MDMA and mephedrone. TetM0 is not cytotoxic toward HepG2 and HEK 293 cells below 100 μM according to MTS metabolic and adenylate kinase release assays and is well tolerated in vivo when dosed at 46 mg kg-1 . TetM0 does not inhibit the hERG ion channel and is not mutagenic based on the Ames fluctuation test. Finally, in vivo efficacy studies show that the hyperlocomotion of mice treated with methamphetamine can be greatly reduced by treatment with TetM0 up to 5 minutes later. TetM0 has potential as a broad spectrum in vivo sequestrant for drugs of abuse.
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Affiliation(s)
- Adam T Brockett
- Department of Psychology and Program in Neuroscience and Cognitive Science (NACS), University of Maryland at College Park, College Park, MD 20742, United States
| | - Chunlin Deng
- Department of Chemistry and Biochemistry, University of Maryland at College Park, College Park, MD 20742, United States
| | - Michael Shuster
- Department of Cell Biology and Molecular Genetics, University of Maryland at College Park, College Park, MD 20742, United States
| | - Suvenika Perera
- Department of Chemistry and Biochemistry, University of Maryland at College Park, College Park, MD 20742, United States
| | - Delaney DiMaggio
- Department of Chemistry and Biochemistry, University of Maryland at College Park, College Park, MD 20742, United States
| | - Ming Cheng
- Department of Chemistry and Biochemistry, University of Maryland at College Park, College Park, MD 20742, United States
| | - Steven Murkli
- Department of Chemistry and Biochemistry, University of Maryland at College Park, College Park, MD 20742, United States
| | - Volker Briken
- Department of Cell Biology and Molecular Genetics, University of Maryland at College Park, College Park, MD 20742, United States
| | - Matthew R Roesch
- Department of Psychology and Program in Neuroscience and Cognitive Science (NACS), University of Maryland at College Park, College Park, MD 20742, United States
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland at College Park, College Park, MD 20742, United States
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7
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Selinger AJ, Cavallin NA, Yanai A, Birol I, Hof F. Template-Directed Synthesis of Bivalent, Broad-Spectrum Hosts for Neuromuscular Blocking Agents*. Angew Chem Int Ed Engl 2021; 61:e202113235. [PMID: 34889016 DOI: 10.1002/anie.202113235] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Indexed: 12/19/2022]
Abstract
We report on the synthesis of bivalent water-soluble calix[4]arene and calix[5]arene hosts, Super-sCx4 and Super-sCx5 as new broad-spectrum supramolecular binders of neuromuscular blocking agents (NMBAs). Synthesis was achieved using the target bisquaternary amine NMBAs as a template to link two highly anionic p-sulfonatocalixarene building blocks in aqueous solution. Bivalent anionic hosts Super-sCx4 and Super-sCx5 bind by engaging both quaternary amines present on a variety of NMBAs. We report low μM binding to structurally diverse alkyl, steroidal, curarine and benzylisoquinoline NMBAs with high selectivity over the neurotransmitter acetylcholine and a variety of other hydrophobic amines.
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Affiliation(s)
- Allison J Selinger
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd., Victoria, BC V8P 5C2, Canada.,Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Rd., Victoria, BC V8W 2Y2, Canada
| | - Natalie A Cavallin
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd., Victoria, BC V8P 5C2, Canada.,Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Rd., Victoria, BC V8W 2Y2, Canada
| | - Anat Yanai
- Canada's Michael Smith Genome Sciences Centre, BC Cancer, Vancouver, BC V5Z 4S6, Canada
| | - Inanc Birol
- Canada's Michael Smith Genome Sciences Centre, BC Cancer, Vancouver, BC V5Z 4S6, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Fraser Hof
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd., Victoria, BC V8P 5C2, Canada.,Centre for Advanced Materials and Related Technology (CAMTEC), University of Victoria, 3800 Finnerty Rd., Victoria, BC V8W 2Y2, Canada
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8
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Warmerdam Z, Kamba BE, Le MH, Schrader T, Isaacs L, Bayer P, Hof F. Binding Methylarginines and Methyllysines as Free Amino Acids: A Comparative Study of Multiple Host Classes*. Chembiochem 2021; 23:e202100502. [PMID: 34758178 PMCID: PMC9299052 DOI: 10.1002/cbic.202100502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 11/09/2021] [Indexed: 01/18/2023]
Abstract
Methylated free amino acids are an important class of targets for host‐guest chemistry that have recognition properties distinct from those of methylated peptides and proteins. We present comparative binding studies for three different host classes that are each studied with multiple methylated arginines and lysines to determine fundamental structure‐function relationships. The hosts studied are all anionic and include three calixarenes, two acyclic cucurbiturils, and two other cleft‐like hosts, a clip and a tweezer. We determined the binding association constants for a panel of methylated amino acids using indicator displacement assays. The acyclic cucurbiturils display stronger binding to the methylated amino acids, and some unique patterns of selectivity. The two other cleft‐like hosts follow two different trends, shallow host (clip) following similar trends to the calixarenes, and the other more closed host (tweezer) binding certain less‐methylated amino acids stronger than their methylated counterparts. Molecular modelling sheds some light on the different preferences of the various hosts. The results identify hosts with new selectivities and with affinities in a range that could be useful for biomedical applications. The overall selectivity patterns are explained by a common framework that considers the geometry, depth of binding pockets, and functional group participation across all host classes.
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Affiliation(s)
- Zoey Warmerdam
- Department of Chemistry and the Centre for, Advanced Materials and Related Technology, University of Victoria, 3800 Finnerty Rd, V8W 3V6, Victoria, BC, Canada
| | - Bianca E Kamba
- Department of Structural and Medicinal Biochemistry, Universität Duisburg Essen, Universitätstrasse 2, 45141, Essen, Germany
| | - My-Hue Le
- Department of Chemistry, Universität Duisburg Essen, Universitätstrasse 7, 45117, Essen, Germany
| | - Thomas Schrader
- Department of Chemistry, Universität Duisburg Essen, Universitätstrasse 7, 45117, Essen, Germany
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, College Park, USA
| | - Peter Bayer
- Department of Structural and Medicinal Biochemistry, Universität Duisburg Essen, Universitätstrasse 2, 45141, Essen, Germany
| | - Fraser Hof
- Department of Chemistry and the Centre for, Advanced Materials and Related Technology, University of Victoria, 3800 Finnerty Rd, V8W 3V6, Victoria, BC, Canada
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9
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Finnegan TJ, Gunawardana VWL, Badjić JD. Molecular Recognition of Nerve Agents and Their Organophosphorus Surrogates: Toward Supramolecular Scavengers and Catalysts. Chemistry 2021; 27:13280-13305. [PMID: 34185362 PMCID: PMC8453132 DOI: 10.1002/chem.202101532] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Indexed: 12/19/2022]
Abstract
Nerve agents are tetrahedral organophosphorus compounds (OPs) that were developed in the last century to irreversibly inhibit acetylcholinesterase (AChE) and therefore impede neurological signaling in living organisms. Exposure to OPs leads to a rapid development of symptoms from excessive salivation, nasal congestion and chest pain to convulsion and asphyxiation which if left untreated may lead to death. These potent toxins are prepared on a large scale from inexpensive staring materials, making it feasible for terrorist groups or states to use them against military and civilians. The existing antidotes provide limited protection and are difficult to apply to a large number of affected individuals. While new prophylactics are currently being developed, there is still need for therapeutics capable of both preventing and reversing the effects of OP poisoning. In this review, we describe how the science of molecular recognition can expand the pallet of tools for rapid and safe sequestration of nerve agents.
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Affiliation(s)
- Tyler J Finnegan
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH, USA
| | | | - Jovica D Badjić
- Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH, USA
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10
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Murkli S, Klemm J, Brockett AT, Shuster M, Briken V, Roesch MR, Isaacs L. In Vitro and In Vivo Sequestration of Phencyclidine by Me 4 Cucurbit[8]uril*. Chemistry 2021; 27:3098-3105. [PMID: 33206421 PMCID: PMC7902406 DOI: 10.1002/chem.202004380] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Indexed: 12/19/2022]
Abstract
We report investigations of the use of cucurbit[8]uril (CB[8]) macrocycles as an antidote to counteract the in vivo biological effects of phencyclidine. We investigate the binding of CB[8] and its derivative Me4 CB[8] toward ten drugs of abuse (3-9, 12-14) by a combination of 1 H NMR spectroscopy and isothermal titration calorimetry in phosphate buffered water. We find that the cavity of CB[8] and Me4 CB[8] are able to encapsulate the 1-amino-1-aryl-cyclohexane ring system of phencyclidine (PCP) and ketamine as well as the morphinan skeleton of morphine and hydromorphone with Kd values ≤50 nm. In vitro cytotoxicity (MTS metabolic and adenylate kinase cell death assays in HEK293 and HEPG2 cells) and in vivo maximum tolerated dose studies (Swiss Webster mice) which were performed for Me4 CB[8] indicated good tolerability. The tightest host⋅guest pair (Me4 CB[8]⋅PCP; Kd =2 nm) was advanced to in vivo efficacy studies. The results of open field tests demonstrate that pretreatment of mice with Me4 CB[8] prevents subsequent hyperlocomotion induction by PCP and also that treatment of animals previously dosed with PCP with Me4 CB[8] significantly reduces the locomotion levels.
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Affiliation(s)
- Steven Murkli
- Mr. Steven Murkli, Mr. Jared Klemm, Mr. David King, Dr. Peter Y. Zavalij, Prof. Dr. Lyle Isaacs, Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States
| | - Jared Klemm
- Mr. Steven Murkli, Mr. Jared Klemm, Mr. David King, Dr. Peter Y. Zavalij, Prof. Dr. Lyle Isaacs, Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States
| | - Adam T. Brockett
- Dr. Adam T. Brockett, Prof. Dr. Matthew R. Roesch, Department of Psychology, University of Maryland, College Park, MD 20742, United States
- Dr. Adam T. Brockett, Prof. Dr. Matthew R. Roesch, Program in Neuroscience and Cognitive Science (NACS), University of Maryland, College Park, MD 20742, United States
| | - Michael Shuster
- Mr. Michael Shuster, Prof. Dr. Volker Briken, Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, United States
| | - Volker Briken
- Mr. Michael Shuster, Prof. Dr. Volker Briken, Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, United States
| | - Matthew R. Roesch
- Dr. Adam T. Brockett, Prof. Dr. Matthew R. Roesch, Department of Psychology, University of Maryland, College Park, MD 20742, United States
- Dr. Adam T. Brockett, Prof. Dr. Matthew R. Roesch, Program in Neuroscience and Cognitive Science (NACS), University of Maryland, College Park, MD 20742, United States
| | - Lyle Isaacs
- Mr. Steven Murkli, Mr. Jared Klemm, Mr. David King, Dr. Peter Y. Zavalij, Prof. Dr. Lyle Isaacs, Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States
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11
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Mao W, Mao D, Yang F, Ma D. Transformative Supramolecular Vesicles Based on Acid-Degradable Acyclic Cucurbit[n]uril and a Prodrug for Promoted Tumoral-Cell Uptake. Chemistry 2019; 25:2272-2280. [PMID: 30511775 DOI: 10.1002/chem.201804835] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 11/09/2018] [Indexed: 11/08/2022]
Abstract
Smart supramolecular vesicles constructed by host-guest interactions between "acid-degradable" acyclic cucurbit[n]uril (CB[n]) and a doxorubicin prodrug are reported. "Acid-degradable" acyclic CB[n] is a high-affinity host for several common antitumor drugs, and its degradation leads to a more dramatic decrease in binding affinity than that observed for "acid-sensitive" hosts. Supramolecular complexation between acid-degradable acyclic CB[n] and a doxorubicin prodrug resulted in the formation of negatively charged supramolecular vesicles. The prodrug strategy allowed doxorubicin to be conjugated to vesicles in a stable manner with a high drug-loading ratio of 20 %. The resulting supramolecular vesicles were responsive to tumor acidity (pH 6.5). Induced by mildly acidic conditions (pH 6.5-5.5), acid-degradable acyclic CB[n] could be degraded, and this led to a vesicle-to-micelle transition to form positively charged micelles. This transition resulted in a pH-dependent change in size and surface charge, which improved tumoral-cell uptake for doxorubicin.
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Affiliation(s)
- Weipeng Mao
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, P.R. China
| | - Dake Mao
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, P.R. China
| | - Fan Yang
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, P.R. China
| | - Da Ma
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, P.R. China
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12
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Liu W, Lu X, Xue W, Samanta SK, Zavalij PY, Meng Z, Isaacs L. Hybrid Molecular Container Based on Glycoluril and Triptycene: Synthesis, Binding Properties, and Triggered Release. Chemistry 2018; 24:14101-14110. [PMID: 30044903 DOI: 10.1002/chem.201802981] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/23/2018] [Indexed: 12/11/2022]
Abstract
We designed and synthesized a "hybrid" molecular container 1, which is structurally related to both cucurbit[n]uril (CB[n]) and pillar[n]arene type receptors. Receptor 1 was fully characterized by 1 H NMR, 13 C NMR, IR, MS and X-ray single crystal diffraction. The self-association behavior, host-guest recognition properties of 1, and the [salt] dependence of Ka were investigated in detail by 1 H NMR and isothermal titration calorimetry (ITC). Optical transmittance and TEM measurements provide strong evidence that receptor 1 undergoes co-assemble with amphiphilic guest C10 in water to form supramolecular bilayer vesicles (diameter 25.6±2.7 nm, wall thickness ≈3.5 nm) that can encapsulate the hydrophilic anticancer drug doxorubicin (DOX) and the hydrophobic dye Nile red (NR). The release of encapsulated DOX or NR from the vesicles can be triggered by hexamethonium (8 c) or spermine (10) which leads to the disruption of the supramolecular vesicles.
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Affiliation(s)
- Wenjin Liu
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing, 100081, P.R. China.,Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
| | - Xiaoyong Lu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
| | - Weijian Xue
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
| | - Soumen K Samanta
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
| | - Peter Y Zavalij
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
| | - Zihui Meng
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing, 100081, P.R. China
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland, 20742, USA
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13
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Lu X, Samanta SK, Zavalij PY, Isaacs L. Blurring the Lines between Host and Guest: A Chimeric Receptor Derived from Cucurbituril and Triptycene. Angew Chem Int Ed Engl 2018; 57:8073-8078. [PMID: 29749674 DOI: 10.1002/anie.201803132] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 04/30/2018] [Indexed: 12/13/2022]
Abstract
We report the synthesis and X-ray crystal structure of a cucurbituril-triptycene chimeric receptor (1). Host 1 binds to guests typical of CB[6]-CB[8], but also binds to larger guests such as blue box (20) and the Fujita square (22). Intriguingly, the geometries of the 1⋅20 and 1⋅22 complexes blur the lines between host and guest in that both components fulfill both roles within each complex. The fluorescence output of 1 is fully quenched by the formation of complexes with pyridinium-derived guests.
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Affiliation(s)
- Xiaoyong Lu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Soumen K Samanta
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Peter Y Zavalij
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
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14
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Lu X, Samanta SK, Zavalij PY, Isaacs L. Blurring the Lines between Host and Guest: A Chimeric Receptor Derived from Cucurbituril and Triptycene. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803132] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Xiaoyong Lu
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742 USA
| | - Soumen K. Samanta
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742 USA
| | - Peter Y. Zavalij
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742 USA
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry University of Maryland College Park MD 20742 USA
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15
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Affiliation(s)
- Stephan Sinn
- Institute of Nanotechnology (INT); Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland/Germany
| | - Frank Biedermann
- Institute of Nanotechnology (INT); Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland/Germany
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16
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Macartney DH. Cucurbit[n]uril Host-Guest Complexes of Acids, Photoacids, and Super Photoacids. Isr J Chem 2017. [DOI: 10.1002/ijch.201700096] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Donal H. Macartney
- Department of Chemistry; Queen's University; 90 Bader Lane, Kingston ON Canada K7L3N6
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17
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Ganapati S, Grabitz SD, Murkli S, Scheffenbichler F, Rudolph MI, Zavalij PY, Eikermann M, Isaacs L. Molecular Containers Bind Drugs of Abuse in Vitro and Reverse the Hyperlocomotive Effect of Methamphetamine in Rats. Chembiochem 2017; 18:1583-1588. [PMID: 28586110 PMCID: PMC5570556 DOI: 10.1002/cbic.201700289] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Indexed: 01/20/2023]
Abstract
We measured the affinity of five molecular container compounds (calabadions 1 and 2, CB[7], sulfocalix[4]arene, and HP-β-CD) toward seven drugs of abuse in homogenous aqueous solution at physiological pH by various methods (1 H NMR, UV/Vis, isothermal titration calorimetry [ITC]) and found binding constants (Ka values) spanning from <102 to >108 m-1 . We also report X-ray crystal structures of CB[7]⋅methamphetamine and 1⋅methamphetamine. We found that 2, but not CB[7], was able to ameliorate the hyperlocomotive activity of rats treated with methamphetamine. The bioavailability of the calabadions and their convergent building block synthesis suggest potential for further structural optimization as reversal agents for intoxication with nonopioid drugs of abuse for which no treatments are currently available.
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Affiliation(s)
- Shweta Ganapati
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - Stephanie D Grabitz
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Steven Murkli
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - Flora Scheffenbichler
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Maíra I Rudolph
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Peter Y Zavalij
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - Matthias Eikermann
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
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18
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Jono K, Suzuki A, Akita M, Albrecht K, Yamamoto K, Yoshizawa M. A Polyaromatic Molecular Clip That Enables the Binding of Planar, Tubular, and Dendritic Compounds. Angew Chem Int Ed Engl 2017; 56:3570-3574. [PMID: 28225169 DOI: 10.1002/anie.201612489] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Indexed: 12/27/2022]
Abstract
By the covalent linkage of two bent bisanthracene amphiphiles with a biphenyl spacer bearing hydrophilic pendants, we synthesized a new molecular clip with a C-shaped conformation. The molecular clip provides an acyclic, open cavity surrounded by four anthracene panels in water. In contrast to previous clip- and tweezers-like compounds as well as cage-shaped compounds, the C-shaped polyaromatic cavity displays unusual wide-ranging capturing abilities toward not only planar perylene-based pigments and cylindrical single-walled carbon nanotubes but also highly branched macromolecules (carbazole dendrimers).
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Affiliation(s)
- Keisuke Jono
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Akira Suzuki
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Munetaka Akita
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Ken Albrecht
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
| | - Michito Yoshizawa
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, 226-8503, Japan
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19
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Jono K, Suzuki A, Akita M, Albrecht K, Yamamoto K, Yoshizawa M. A Polyaromatic Molecular Clip That Enables the Binding of Planar, Tubular, and Dendritic Compounds. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612489] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Keisuke Jono
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
| | - Akira Suzuki
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
| | - Munetaka Akita
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
| | - Ken Albrecht
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
| | - Kimihisa Yamamoto
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
| | - Michito Yoshizawa
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
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20
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Abstract
Phenylene-bridged glycoluril dimers are used for the construction of supramolecular host molecules with high affinity towards methylviologen in water.
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Affiliation(s)
- Jan Sokolov
- Department of Chemistry and RECETOX
- Masaryk University
- 62500 Brno
- Czech Republic
| | - Tomas Lizal
- Department of Chemistry and RECETOX
- Masaryk University
- 62500 Brno
- Czech Republic
| | - Vladimir Sindelar
- Department of Chemistry and RECETOX
- Masaryk University
- 62500 Brno
- Czech Republic
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21
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Lizal T, Ustrnul L, Necas M, Sindelar V. Propanediurea-Based Molecular Clips Bind Halide Anions: An Insight into the Mechanism of Cucurbituril Formation. J Org Chem 2016; 81:8906-8910. [DOI: 10.1021/acs.joc.6b01602] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tomas Lizal
- Department of Chemistry and ‡RECETOX, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| | - Lukas Ustrnul
- Department of Chemistry and ‡RECETOX, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| | - Marek Necas
- Department of Chemistry and ‡RECETOX, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
| | - Vladimir Sindelar
- Department of Chemistry and ‡RECETOX, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic
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22
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Basílio N, Pischel U. Drug Delivery by Controlling a Supramolecular Host-Guest Assembly with a Reversible Photoswitch. Chemistry 2016; 22:15208-15211. [DOI: 10.1002/chem.201603331] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Nuno Basílio
- Laboratório Associado para a Química Verde (LAQV); Rede de Química e Tecnologia (REQUIMTE); Departmento de Química; Faculdade de Ciências e Tecnologia; Universidade NOVA de Lisboa; 2829-516 Caparica Portugal
| | - Uwe Pischel
- CIQSO - Center for Research in Sustainable Chemistry and; Department of Chemistry; University of Huelva, Campus de El Carmen s/n; 21071 Huelva Spain
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23
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She N, Moncelet D, Gilberg L, Lu X, Sindelar V, Briken V, Isaacs L. Glycoluril-Derived Molecular Clips are Potent and Selective Receptors for Cationic Dyes in Water. Chemistry 2016; 22:15270-15279. [PMID: 27492252 DOI: 10.1002/chem.201601796] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Indexed: 12/14/2022]
Abstract
Molecular clip 1 remains monomeric in water and engages in host-guest recognition processes with suitable guests. We report the Ka values for 32 1⋅guest complexes measured by 1 H NMR, UV/Vis, and fluorescence titrations. The cavity of 1 is shaped by aromatic surfaces of negative electrostatic potential and therefore displays high affinity and selectivity for planar and cationic aromatic guests that distinguishes it from CB[n] receptors that prefer aliphatic over aromatic guests. Electrostatic effects play a dominant role in the recognition process whereby ion-dipole interactions may occur between ammonium ions and the C=O groups of 1, between the SO3- groups of 1 and pendant cationic groups on the guest, and within the cavity of 1 by cation-π interactions. Host 1 displays a high affinity toward dicationic guests with large planar aromatic surfaces (e.g. naphthalene diimide NDI+ and perylene diimide PDI+) and cationic dyes derived from acridine (e.g. methylene blue and azure A). The critical importance of cation-π interactions was ascertained by a comparison of analogous neutral and cationic guests (e.g. methylene violet vs. methylene blue; quinoline vs. N-methylquinolinium; acridine vs. N-methylacridinium; neutral red vs. neutral red H+ ) the affinities of which differ by up to 380-fold. We demonstrate that the high affinity of 1 toward methylene blue (Ka =3.92×107 m-1 ; Kd =25 nm) allows for the selective sequestration and destaining of U87 cells stained with methylene blue.
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Affiliation(s)
- Nengfang She
- Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China.,Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - Damien Moncelet
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, 20742, USA
| | - Laura Gilberg
- Department of Chemistry and RECETOX, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Xiaoyong Lu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - Vladimir Sindelar
- Department of Chemistry and RECETOX, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Volker Briken
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, 20742, USA
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA.
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24
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Zhu L, Zhu M, Zhao Y. Controlled Movement of Cucurbiturils in Host-Guest Systems. Chempluschem 2016; 82:30-41. [DOI: 10.1002/cplu.201600309] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Indexed: 01/18/2023]
Affiliation(s)
- Liangliang Zhu
- State Key Laboratory of Molecular Engineering of Polymers; Department of Macromolecular Science; Fudan University; 220 Handan Road Shanghai 200433 P. R. China
| | - Mingjie Zhu
- State Key Laboratory of Molecular Engineering of Polymers; Department of Macromolecular Science; Fudan University; 220 Handan Road Shanghai 200433 P. R. China
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
- School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798 Singapore
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25
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Lu X, Isaacs L. Uptake of Hydrocarbons in Aqueous Solution by Encapsulation in Acyclic Cucurbit[
n
]uril‐Type Molecular Containers. Angew Chem Int Ed Engl 2016; 55:8076-80. [DOI: 10.1002/anie.201602671] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Indexed: 01/04/2023]
Affiliation(s)
- Xiaoyong Lu
- Department of Chemistry and Biochemistry University of Maryland, College Park College Park MD 20742 USA
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry University of Maryland, College Park College Park MD 20742 USA
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26
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Lu X, Isaacs L. Uptake of Hydrocarbons in Aqueous Solution by Encapsulation in Acyclic Cucurbit[
n
]uril‐Type Molecular Containers. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602671] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xiaoyong Lu
- Department of Chemistry and Biochemistry University of Maryland, College Park College Park MD 20742 USA
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry University of Maryland, College Park College Park MD 20742 USA
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27
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Sigwalt D, Moncelet D, Falcinelli S, Mandadapu V, Zavalij PY, Day A, Briken V, Isaacs L. Acyclic Cucurbit[n]uril-Type Molecular Containers: Influence of Linker Length on Their Function as Solubilizing Agents. ChemMedChem 2016; 11:980-9. [PMID: 26990780 PMCID: PMC4861662 DOI: 10.1002/cmdc.201600090] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 03/03/2016] [Indexed: 01/13/2023]
Abstract
Two acyclic cucurbit[n]uril (CB[n])-type molecular containers that differ in the length of the (CH2 )n linker (M2C2: n=2, M2C4: n=4) between their aromatic sidewalls and sulfonate solubilizing groups were prepared and studied. The inherent solubilities of M2C2 (68 mm) and M2C4 (196 mm) are higher than the analogue with a (CH2 )3 linker (M2, 14 mm) studied previously. (1) H NMR dilution experiments show that M2C2 and M2C4 do not self-associate in water, which enables their use as solubilizing excipients. We used phase solubility diagrams (PSDs) to compare the solubilizing capacities of M2, M2C2, M2C4, hydroxypropyl-β-cyclodextrin (HP-β-CD), and sulfobutylether-β-cyclodextrin (SBE-β-CD) toward 15 insoluble drugs. We found that M2C2 and M2C4-as gauged by the slope of their PSDs-are less potent solubilizing agents than M2. However, the higher inherent solubility of M2C2 allows higher concentrations of drug to be formulated using M2C2 than with M2 in several cases. The solubilizing ability of M2C2 and SBE-β-CD were similar in many cases, with Krel values averaging 23 and 12, respectively, relative to HP-β-CD. In vitro cytotoxicity and in vivo maximum tolerated dose studies document the biocompatibility of M2C2.
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Affiliation(s)
- David Sigwalt
- Department of Chemistry, University of Maryland, College Park, MD, 20742, USA
| | - Damien Moncelet
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, 20742, USA
| | - Shane Falcinelli
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, 20742, USA
| | - Vijaybabu Mandadapu
- Department of Chemistry, University of New South Wales Canberra, Australian Defence Force Academy, Canberra,ACT, 2600, Australia
| | - Peter Y Zavalij
- Department of Chemistry, University of Maryland, College Park, MD, 20742, USA
| | - Anthony Day
- Department of Chemistry, University of New South Wales Canberra, Australian Defence Force Academy, Canberra,ACT, 2600, Australia
| | - Volker Briken
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, 20742, USA.
| | - Lyle Isaacs
- Department of Chemistry, University of Maryland, College Park, MD, 20742, USA.
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28
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Vázquez J, Remón P, Dsouza RN, Lazar AI, Arteaga JF, Nau WM, Pischel U. A simple assay for quality binders to cucurbiturils. Chemistry 2014; 20:9897-901. [PMID: 25043661 DOI: 10.1002/chem.201403405] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Indexed: 11/07/2022]
Abstract
A new approach towards the rapid identification of quality binders to cucurbiturils--those that combine high affinity with high selectivity for a particular homologue--was developed. The assay exploits macrocycle-specific optical fingerprints (colorimetric or fluorimetric) of carefully selected indicators dyes. The screening of a guest library revealed known (e.g., adamantane derivatives) and new (e.g., terpenes) quality binders. The predictive power of the assay was underpinned by the modeling of the involved thermodynamic equilibria.
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Affiliation(s)
- Julián Vázquez
- CIQSO - Center for Research in Sustainable Chemistry and Department of Chemical Engineering, Physical Chemistry, and Organic Chemistry, University of Huelva, Campus de El Carmen s/n, 21071 Huelva (Spain), Fax: (+34) 959 21 99 83
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29
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Lemaur V, Carroy G, Poussigue F, Chirot F, De Winter J, Isaacs L, Dugourd P, Cornil J, Gerbaux P. Homotropic Allosterism: In-Depth Structural Analysis of the Gas-Phase Noncovalent Complexes Associating a Double-Cavity Cucurbit[n]uril-Type Host and Size-Selected Protonated Amino Compounds. Chempluschem 2013; 78:959-969. [DOI: 10.1002/cplu.201300208] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Indexed: 11/09/2022]
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