1
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Perera S, Shaurya A, Baptiste M, Zavalij PY, Isaacs L. Acyclic Cucurbit[n]uril Receptors Function as Solid State Sequestrants for Organic Micropollutants. Angew Chem Int Ed Engl 2024; 63:e202407169. [PMID: 38661568 DOI: 10.1002/anie.202407169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 04/26/2024]
Abstract
The accumulation of organic micropollutants (OMP) in aquatic systems is a major societal problem that can be addressed by approaches including nanofiltration, flocculation, reverse osmosis and adsorptive methods using insoluble materials (e.g. activated carbon, MOFs, nanocomposites). More recently, polymeric versions of supramolecular hosts (e.g. cyclodextrins, calixarenes, pillararenes) have been investigated as OMP sequestrants. Herein, we report our study of the use of water insoluble dimethylcatechol walled acyclic cucurbit[n]uril (CB[n]) hosts as solid state sequestrants for a panel of five OMPs. A series of hosts (H1-H4) were synthesized by reaction of glycoluril oligomer (monomer-tetramer) with 3,6-dimethylcatechol and fully characterized by spectroscopic means and x-ray crystallography. The solid hosts sequester OMPs from water with removal efficiencies exceeding 90 % in some cases. The removal efficiencies of the new hosts parallel the known molecular recognition properties of analogous water soluble acyclic CB[n]. OMP uptake by solid host occurs rapidly (≈120 seconds). Head-to-head comparison with CB[6] in batch-mode separation and DARCO activated carbon in flow-through separation mode show that tetramer derived host (H4) performs very well under identical conditions. The work establishes insoluble acyclic CB[n]-type receptors as a promising new platform for OMP sequestration.
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Affiliation(s)
- Suvenika Perera
- Department of Chemistry and Biochemistry, University of Maryland, College Park, 8051 Regents Dr., College Park, MD 20742, United States
| | - Alok Shaurya
- Department of Chemistry and Biochemistry, University of Maryland, College Park, 8051 Regents Dr., College Park, MD 20742, United States
| | - Michael Baptiste
- Department of Chemistry and Biochemistry, University of Maryland, College Park, 8051 Regents Dr., College Park, MD 20742, United States
| | - Peter Y Zavalij
- Department of Chemistry and Biochemistry, University of Maryland, College Park, 8051 Regents Dr., College Park, MD 20742, United States
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, 8051 Regents Dr., College Park, MD 20742, United States
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2
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Mora AC, Vara M, Reust P, Code A, Oliver P, Mace CR. Colorimetric Detection of Fentanyl Powder on Surfaces Using a Supramolecular Displacement Assay. ACS Sens 2024; 9:3198-3204. [PMID: 38775258 DOI: 10.1021/acssensors.4c00517] [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] [Indexed: 06/29/2024]
Abstract
Fentanyl is a potent synthetic opioid with an alarmingly low lethal dosage of 2 mg. The equipment necessary to detect fentanyl in field settings (e.g., hand-held spectrometers) is restricted to highly trained, well-funded, and specialized personnel. Established point-of-need technologies, such as lateral flow immunochromatographic strips, are available; however, they often involve multiple contact-based steps (e.g., collection, mixing) that pose a higher risk to users handling unknown substances. Herein, we developed a colorimetric displacement assay capable of contactless detection of fentanyl in liquid or solid samples. The basis of our assay relies on the presence of fentanyl to displace a redox mediator, ferrocene carboxylic acid, inclusively bound in the cavity of a supramolecular host, CB[7]. The displacement is only possible in the presence of high affinity binding guests, like fentanyl (KA ∼ 106 M-1). The liberated redox guest can then react with indicator reagents that are free in solution, producing either: (i) a distinct blue color to indicate the presence of fentanyl or (ii) a pale blue tint in the absence of fentanyl. We demonstrate rapid and specific detection of fentanyl free base and fentanyl derivatives (e.g., acetyl fentanyl and furanyl fentanyl) against a panel of 9 other common drugs of abuse (e.g., morphine, cocaine, and heroin). Furthermore, we highlight the intended use of this assay by testing grains of fentanyl derivatives on a surface with a drop (i.e., 25 μL) of the assay reagent. We anticipate that this approach can be applied broadly to identify the presence of fentanyl at the point of need.
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Affiliation(s)
- Andrea C Mora
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Madeline Vara
- Clear Scientific Inc, Cambridge, Massachusetts 02138, United States
| | - Patrick Reust
- Clear Scientific Inc, Cambridge, Massachusetts 02138, United States
| | - Amanda Code
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Piercen Oliver
- Clear Scientific Inc, Cambridge, Massachusetts 02138, United States
| | - Charles R Mace
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
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3
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Zhao Q, Zhu J, Chen Y, Dong H, Zhou S, Yin Y, Cai Q, Chen S, Chen C, Wang L. Trapping and reversing neuromuscular blocking agent by anionic pillar[5]arenes: Understanding the structure-affinity-reversal effects. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:133875. [PMID: 38457970 DOI: 10.1016/j.jhazmat.2024.133875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/22/2024] [Accepted: 02/22/2024] [Indexed: 03/10/2024]
Abstract
Selective relaxant binding agents (SRBA) have great potential in clinical surgeries for the precise reversal of neuromuscular blockades. Understanding the relationship between the structure-affinity-reversal effects of SRBA and neuromuscular blockade is crucial for the design of new SRBAs, which has rarely been explored. Seven anionic pillar[5]arenes (AP5As) with different aliphatic chains and anionic groups at both edges were designed. Their binding affinities to the neuromuscular blocking agent decamonium bromide (DMBr) were investigated using 1H NMR, isothermal titration calorimetry (ITC), and theoretical calculations. The results indicate that the capture of DMBr by AP5As is primarily driven by electrostatic interactions, ion-dipole interactions and C-H‧‧‧π interactions. The optimal size matching between the carboxylate AP5As and DMBr was ∼0.80. The binding affinity increased with an increase in the charge quantity of AP5As. Further animal experiments indicated that the reversal efficiency increased with increasing binding affinity for carboxylate or phosphonate AP5As. However, phosphonate AP5As exhibited lower reversal efficiencies than carboxylate AP5As, despite having stronger affinities with DMBr. By understanding the structure-affinity-reversal relationships, this study provides valuable insights into the design of innovative SRBAs for reversing neuromuscular blockade.
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Affiliation(s)
- Qi Zhao
- The Institute for Advanced Studies, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Jinpiao Zhu
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, 185 Donghu Road, Wuhan, Hubei 430071, China; Department of Anesthesiology, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang 310052, China
| | - Yi Chen
- The Institute for Advanced Studies, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Hongqiang Dong
- The Institute for Advanced Studies, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Siyuan Zhou
- The Institute for Advanced Studies, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Yongfei Yin
- The Institute for Advanced Studies, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China
| | - Qiang Cai
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan University, 238 Jiefang Road, Wuhan, Hubei 430060, China
| | - Shigui Chen
- The Institute for Advanced Studies, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China.
| | - Chang Chen
- Department of Anesthesiology, Zhongnan Hospital, Wuhan University, 185 Donghu Road, Wuhan, Hubei 430071, China.
| | - Lu Wang
- The Institute for Advanced Studies, Wuhan University, 299 Bayi Road, Wuhan, Hubei 430072, China.
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4
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Zaorska E, Malinska M. Cucurbit[7]uril-mediated Histidine Dimerization: Exploring the Structure and Binding Mechanism. Chemistry 2024; 30:e202302250. [PMID: 38055216 DOI: 10.1002/chem.202302250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 12/01/2023] [Accepted: 12/03/2023] [Indexed: 12/07/2023]
Abstract
Cucurbit[7,8]urils are known to form inclusion complexes with hydrophobic amino acids such as Trp, Tyr, Phe, and Met, as well as peptides containing these residues at the N-terminus. Despite their widespread use in protein purification, the affinity of histidine (His) for cucurbit[7,8]urils has not been extensively explored. In this study, X-ray diffraction experiments were conducted to investigate the binding of two histidine moieties to the cucurbit[7]uril (CB7) cavity, resulting in a network of π-π and hydrogen bonds. This assembly was found to induce a His pKa shift of ΔpKa=-4. Histidine weakly bound to CB7 or CB8; however, isothermal titration calorimetry revealed micromolar equilibrium dissociation constant values for CB7 and CB8 when bound to dipeptides containing His at the C-terminus. Conversely, dipeptides with His at the N-terminus exhibited millimolar values. Additionally, the His-Gly-Gly tripeptide formed a 2 : 1 complex with CB7. These findings suggest the potential use of histidine and histidine-containing tags in conjunction with CB7 for various biological applications.
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Affiliation(s)
- Ewelina Zaorska
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
| | - Maura Malinska
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
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5
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Montoya ID, Volkow ND. IUPHAR Review: New strategies for medications to treat substance use disorders. Pharmacol Res 2024; 200:107078. [PMID: 38246477 PMCID: PMC10922847 DOI: 10.1016/j.phrs.2024.107078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/11/2024] [Accepted: 01/15/2024] [Indexed: 01/23/2024]
Abstract
Substance use disorders (SUDs) and drug overdose are a public health emergency and safe and effective treatments are urgently needed. Developing new medications to treat them is expensive, time-consuming, and the probability of a compound progressing to clinical trials and obtaining FDA-approval is low. The small number of FDA-approved medications for SUDs reflects the low interest of pharmaceutical companies to invest in this area due to market forces, characteristics of the population (e.g., stigma, and socio-economic and legal disadvantages), and the high bar regulatory agencies set for new medication approval. In consequence, most research on medications is funded by government agencies, such as the National Institute on Drug Abuse (NIDA). Multiple scientific opportunities are emerging that can accelerate the discovery and development of new medications for SUDs. These include fast and efficient tools to screen new molecules, discover new medication targets, use of big data to explore large clinical data sets and artificial intelligence (AI) applications to make predictions, and precision medicine tools to individualize and optimize treatments. This review provides a general description of these new research strategies for the development of medications to treat SUDs with emphasis on the gaps and scientific opportunities. It includes a brief overview of the rising public health toll of SUDs; the justification, challenges, and opportunities to develop new medications; and a discussion of medications and treatment endpoints that are being evaluated with support from NIDA.
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Affiliation(s)
- Ivan D Montoya
- Division of Therapeutics and Medical Consequences, National Institute on Drug Abuse, 3 White Flint North, North Bethesda, MD 20852, United States.
| | - Nora D Volkow
- National Institute on Drug Abuse, 3 White Flint North, North Bethesda, MD 20852, United States
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6
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Finnegan TJ, Mortensen C, Badjić JD. Molecular baskets form inclusion complexes with phenethylamine drugs in water. Chem Commun (Camb) 2024. [PMID: 38273731 DOI: 10.1039/d3cc05485c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Molecular basket 16- comprising a nonpolar cavity and an anionic nest of six carboxylates at its rim was found to form inclusion complexes with (1R, 2S)-ephedrine, (1R, 2R)-pseudoephedrine, and (1S, 2R)-tranylcypromine. Experimental results (NMR) and theory (MM/DFT) suggest the basket encapsulates phenethylamines in unique and predictable fashion.
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Affiliation(s)
- Tyler J Finnegan
- The Ohio State University, Department of Chemistry & Biochemistry, 100 W 18th Avenue, Columbus, OH 43210, USA.
| | - Christopher Mortensen
- The Ohio State University, Department of Chemistry & Biochemistry, 100 W 18th Avenue, Columbus, OH 43210, USA.
| | - Jovica D Badjić
- The Ohio State University, Department of Chemistry & Biochemistry, 100 W 18th Avenue, Columbus, OH 43210, USA.
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7
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Cotten JF. Goofball Polypharmacy. J Pharmacol Exp Ther 2024; 388:241-243. [PMID: 38233226 DOI: 10.1124/jpet.123.001930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 10/05/2023] [Indexed: 01/19/2024] Open
Affiliation(s)
- Joseph F Cotten
- Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Boston, Massachusetts
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8
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Chen J, Tabaie EZ, Hickey BL, Gao Z, Raz AAP, Li Z, Wilson EH, Hooley RJ, Zhong W. Selective Molecular Recognition and Indicator Displacement Sensing of Neurotransmitters in Cellular Environments. ACS Sens 2023; 8:3195-3204. [PMID: 37477362 DOI: 10.1021/acssensors.3c00886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
Flexible, water-soluble hosts are capable of selective molecular recognition in cellular environments and can detect neurotransmitters such as choline in cells. Both cationic and anionic water-soluble self-folded deep cavitands can recognize suitable styrylpyridinium dyes in cellular interiors. The dyes selectively accumulate in nucleotide-rich regions of the cell nucleus and cytoplasm. The hosts bind the dyes and promote their relocation to the outer cell membrane: the lipophilic cavitands predominantly reside in membrane environments but are still capable of binding suitable targets in other cellular organelles. Incubating the cells with structurally similar biomarkers such as choline, cholamine, betaine, or butyrylcholine illustrates the selective recognition. Choline and butyrylcholine can be bound by the hosts, but minimal binding is seen with betaine or cholamine. Varying the dye allows control of the optical detection method, and both "turn-on" sensing and "turn-off" sensing are possible.
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9
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Brockett AT, Xue W, King D, Deng CL, Zhai C, Shuster M, Rastogi S, Briken V, Roesch MR, Isaacs L. Pillar[6]MaxQ: A Potent Supramolecular Host for In Vivo Sequestration of Methamphetamine and Fentanyl. Chem 2023; 9:881-900. [PMID: 37346394 PMCID: PMC10281757 DOI: 10.1016/j.chempr.2022.11.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Pillar[6]MaxQ (P6AS) functions as an in vivo sequestration agent for methamphetamine and fentanyl. We use 1H NMR, isothermal titration calorimetry, and molecular modelling to deduce the geometry and strength of the P6AS•drug complexes. P6AS forms tight complexes with fentanyl (Kd=9.8 nM), PCP (17.1 nM), MDMA (25.5 nM), mephedrone (52.4 nM), and methamphetamine (101 nM). P6AS has good in vitro biocompatibility according to MTS metabolic, Adenylate Kinase cell death, and hERG ion channel inhibition assays, and the Ames fluctuation test. The no observed adverse effect level for P6AS is 45 mg/kg. The hyperlocomotion of mice treated with methamphetamine (0.5 mg/kg) can be ameliorated by treatment with P6AS (35.7 mg/kg) 5-minutes later, whereas the hyperlocomotion of mice treated with fentanyl (0.1 mg/kg) can be controlled by treatment with P6AS (5 mg/kg) up to 15-minutes later. P6AS has significant potential for development as a broad spectrum in vivo sequestration agent.
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Affiliation(s)
- Adam T. Brockett
- Department of Psychology and Program in Neuroscience and Cognitive Science (NACS), University of Maryland, College Park, MD 20742, United States
| | - Weijian Xue
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States
| | - David King
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States
| | - Chun-Lin Deng
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States
| | - Canjia Zhai
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States
| | - Michael Shuster
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, United States
| | - Shivangi Rastogi
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, United States
| | - Volker Briken
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, United States
| | - Matthew R. Roesch
- Department of Psychology and Program in Neuroscience and Cognitive Science (NACS), University of Maryland, College Park, MD 20742, United States
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, United States
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10
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Amezcua M, Setiadi J, Ge Y, Mobley DL. An overview of the SAMPL8 host-guest binding challenge. J Comput Aided Mol Des 2022; 36:707-734. [PMID: 36229622 PMCID: PMC9596595 DOI: 10.1007/s10822-022-00462-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 06/21/2022] [Indexed: 11/23/2022]
Abstract
The SAMPL series of challenges aim to focus the community on specific modeling challenges, while testing and hopefully driving progress of computational methods to help guide pharmaceutical drug discovery. In this study, we report on the results of the SAMPL8 host–guest blind challenge for predicting absolute binding affinities. SAMPL8 focused on two host–guest datasets, one involving the cucurbituril CB8 (with a series of common drugs of abuse) and another involving two different Gibb deep-cavity cavitands. The latter dataset involved a previously featured deep cavity cavitand (TEMOA) as well as a new variant (TEETOA), both binding to a series of relatively rigid fragment-like guests. Challenge participants employed a reasonably wide variety of methods, though many of these were based on molecular simulations, and predictive accuracy was mixed. As in some previous SAMPL iterations (SAMPL6 and SAMPL7), we found that one approach to achieve greater accuracy was to apply empirical corrections to the binding free energy predictions, taking advantage of prior data on binding to these hosts. Another approach which performed well was a hybrid MD-based approach with reweighting to a force matched QM potential. In the cavitand challenge, an alchemical method using the AMOEBA-polarizable force field achieved the best success with RMSE less than 1 kcal/mol, while another alchemical approach (ATM/GAFF2-AM1BCC/TIP3P/HREM) had RMSE less than 1.75 kcal/mol. The work discussed here also highlights several important lessons; for example, retrospective studies of reference calculations demonstrate the sensitivity of predicted binding free energies to ethyl group sampling and/or guest starting pose, providing guidance to help improve future studies on these systems.
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Affiliation(s)
- Martin Amezcua
- Department of Pharmaceutical Sciences, University of California, Irvine, CA, 92697, USA
| | - Jeffry Setiadi
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Yunhui Ge
- Department of Pharmaceutical Sciences, University of California, Irvine, CA, 92697, USA
| | - David L Mobley
- Department of Pharmaceutical Sciences, University of California, Irvine, CA, 92697, USA. .,Department of Chemistry, University of California, Irvine, CA, 92697, USA.
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11
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Synthesis of Glycoluril Dimers with the Ability to Form Polymeric Self-Associates in Water. CHEMISTRY 2022. [DOI: 10.3390/chemistry4030053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Supramolecular self-assembly in water resulting in polymeric structures is emerging because of its potential in the preparation of adaptive materials with applications in biology and medicine. Here, we report the first example of host molecules based on glycoluril dimers, which self-associate into linear oligomers in water. The degree of polymerization for the resulting supramolecular aggregates was calculated using the isodesmic model and the Carothers equation. The model compound was prepared to enable a deeper understanding of the forces responsible for the self-association of the glycoluril dimer-based monomers in water.
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12
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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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13
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Markthaler D, Kraus H, Hansen N. Binding free energies for the SAMPL8 CB8 "Drugs of Abuse" challenge from umbrella sampling combined with Hamiltonian replica exchange. J Comput Aided Mol Des 2022; 36:1-9. [PMID: 34978001 PMCID: PMC8831271 DOI: 10.1007/s10822-021-00439-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 12/11/2021] [Indexed: 11/20/2022]
Abstract
Umbrella sampling along a one-dimensional order parameter in combination with Hamiltonian replica exchange was employed to calculate the binding free energy of five guest molecules with known affinity to cucurbit[8]uril. A simple empirical approach correcting for the overestimation of the affinity by the GAFF force field was proposed and subsequently applied to the seven guest molecules of the “Drugs of Abuse” SAMPL8 challenge. Compared to the uncorrected binding free energies, the systematic error decreased but quantitative agreement with experiment was only reached for a few compounds. From a retrospective analysis a weak point of the correction term was identified.
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Affiliation(s)
- Daniel Markthaler
- Institute of Thermodynamics and Thermal Process Engineering, University of Stuttgart, 70569, Stuttgart, Germany
| | - Hamzeh Kraus
- Institute of Thermodynamics and Thermal Process Engineering, University of Stuttgart, 70569, Stuttgart, Germany
| | - Niels Hansen
- Institute of Thermodynamics and Thermal Process Engineering, University of Stuttgart, 70569, Stuttgart, Germany.
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14
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Wu Y, Liu YY, Liu HK, Yu SB, Lin F, Zhou W, Wang H, Zhang DW, Li ZT, Ma D. Flexible organic frameworks sequester neuromuscular blocking agents in vitro and reverse neuromuscular block in vivo. Chem Sci 2022; 13:9243-9248. [PMID: 36093029 PMCID: PMC9384803 DOI: 10.1039/d2sc02456j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 07/14/2022] [Indexed: 11/23/2022] Open
Abstract
Supramolecular sequestration and reversal of neuromuscular block (NMB) have great clinical applications. Water-soluble flexible organic frameworks (FOFs) cross-linked by disulfide bonds are designed and prepared. Different linker lengths are introduced to FOFs to give them varied pore sizes. FOFs are anionic nanoscale polymers and capable of encapsulating cationic neuromuscular blocking agents (NMBAs), including rocuronium (Roc), vecuronium (Vec), pancuronium (Panc) and cisatracurium (Cis). A host–guest study confirms that FOFs bind NMBAs in water. The multivalency interaction between FOFs and NMBAs is able to sequester NMBAs, and prevent them from escaping. These FOFs are non-toxic and biocompatible. Animal studies show that FOFs are effective for the reversal of NMB induced by Roc, Vec and Cis, which shorten the time to a train-of-four ratio of 0.9 by 2.6, 3.8 and 5.7-fold compared to a placebo, respectively. Water-soluble flexible organic frameworks are prepared and used to sequester neuromuscular blocking agents, and reverse their neuromuscular block in vivo.![]()
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Affiliation(s)
- Yan Wu
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Yue-Yang Liu
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Hong-Kun Liu
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Shang-Bo Yu
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry (SIOC), Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Furong Lin
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry (SIOC), Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Wei Zhou
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Hui Wang
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Dan-Wei Zhang
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Zhan-Ting Li
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200438 China
| | - Da Ma
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University 1139 Shifu Avenue, Jiaojiang Zhejiang 318000 China
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15
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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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16
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Brady KG, Liu B, Li X, Isaacs L. Self Assembled Cages with Mechanically Interlocked Cucurbiturils. Supramol Chem 2021; 33:8-32. [PMID: 34366642 DOI: 10.1080/10610278.2021.1908546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
We report preparation of (bis)aniline ligand 4 which contains a central viologen binding domain and its subcomponent self-assembly with aldehyde 5 and Fe(OTf)2 in CH3CN to yield tetrahedral assembly 6. Complexation of ligand 4 with CB[7] in the form of CB[7]•4•2PF6 allows the preparation of assembly 7 which contains an average of 1.95 (range 1-3) mechanically interlocked CB[7] units. Assemblies 6 and 7 are hydrolytically unstable in water due to their imine linkages. Redesign of our system with water stable 2,2'-bipyridine end groups was realized in the form of ligands 11 and 16 which also contain a central viologen binding domain. Self-assembly of 11 with Fe(NTf2)2 gave tetrahedral MOP 12 as evidenced by 1H NMR, DOSY, and mass spectrometric analysis. In contrast, isomeric ligand 16 underwent self-assembly with Fe(OTf)2 to give cubic assembly 17. Precomplexation of ligands 11 and 16 with CB[7] gave the acetonitrile soluble CB[7]•11•2PF6 and CB[7]•16•2PF6 complexes. Self-assembly of CB[7]•11•2PF6 with Fe(OTf)2 gave tetrahedron 13 which contains on average 1.8 mechanically interlocked CB[7] units as determined by 1H NMR, DOSY, and ESI-MS analysis. Self-assembly of CB[7]•16•2PF6 with Fe(OTf)2 gave cube 13 which contains 6.59 mechanically interlocked CB[7] units as determined by 1H NMR and DOSY measurements.
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Affiliation(s)
- Kimberly G Brady
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Bingqing Liu
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Xiaopeng Li
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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17
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Cheng M, Isaacs L. Acyclic Cucurbituril Featuring Pendant Cyclodextrins. Supramol Chem 2021; 33:53-62. [PMID: 34305377 PMCID: PMC8294166 DOI: 10.1080/10610278.2021.1927033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 05/01/2021] [Indexed: 12/22/2022]
Abstract
We report the design and synthesis of the acyclic cucurbit[n]uril-β-cyclodextrin chimeric host H1. The goal of the study is to deepen the cavity of the receptor to allow β-CD complexation of moieties on the guest (especially fentanyl) that protrude from the cavity of the primary acyclic CB[n] binding site to enhance binding affinity and deliver new supramolecular antidotes for fentanyl intoxication. 1H NMR spectroscopy was used to deduce the geometry of the complexes between H1 and H2 and the guest panel (G1 - G8 and fentanyl) whereas isothermal titration calorimetry was used to determine the thermodynamic parameters of complexation. Hosts H1 and H2 retain the essential molecular recognition features of CB[n] receptors, but chimeric host H1 binds slightly stronger toward the guest panel than H2 for reasons that remain unclear. Compared to tetraanionic hosts M1 and M2, the dianionic hosts H1 and H2 are less potent receptors which reflects the importance of electrostatic (ion-ion and ion-dipole) interactions in this series of hosts. The work highlights the challenges inherent in the optimization of binding affinity of hosts as potential supramolecular antidotes.
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Affiliation(s)
- Ming Cheng
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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18
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Hassan DS, De Los Santos ZA, Brady KG, Murkli S, Isaacs L, Wolf C. Chiroptical sensing of amino acids, amines, amino alcohols, alcohols and terpenes with π-extended acyclic cucurbiturils. Org Biomol Chem 2021; 19:4248-4253. [PMID: 33885685 DOI: 10.1039/d1ob00345c] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The efficiency and scope of two acyclic π-wall extended cucurbiturils, M2 and M3, exhibiting rapidly interconverting helical conformers for chiroptical sensing of amines, amino acids, alcohols, and terpenes at micromolar concentrations in water is evaluated. The formation of 1 : 1 host-guest complexes results in spontaneous induction of circular dichroism signals that can be used for accurate determination of the absolute configuration and enantiomeric composition of the analyte based on a simple mix-and-measure protocol.
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Affiliation(s)
- Diandra S Hassan
- Chemistry Department, Georgetown University, Washington, DC 20057, USA.
| | | | - Kimberly G Brady
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA.
| | - Steven Murkli
- 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.
| | - Christian Wolf
- Chemistry Department, Georgetown University, Washington, DC 20057, USA.
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19
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Beatty MA, Hof F. Host-guest binding in water, salty water, and biofluids: general lessons for synthetic, bio-targeted molecular recognition. Chem Soc Rev 2021; 50:4812-4832. [PMID: 33651047 DOI: 10.1039/d0cs00495b] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Synthetic molecular recognition systems are increasingly being used to solve applied problems in the life sciences, and bio-targeted host-guest chemistry has rapidly arisen as a major field of fundamental research. This tutorial review presents a set of fundamental lessons on how host-guest molecular recognition can be programmed in water. The review uses informative examples of aqueous host-guest chemistry organized around generalizable themes and lessons, building towards lessons focused on molecular recognition in salty solutions and biological fluids. It includes selected examples of macrocyclic host systems that work well, as well as common pitfalls and how to avoid them. The review closes with a survey of the most important and inspirational recent advances, which involve host-guest chemistry in living cells and organisms.
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Affiliation(s)
- Meagan A Beatty
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd, Victoria, BC, V8W 3V6 Canada.
| | - Fraser Hof
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd, Victoria, BC, V8W 3V6 Canada.
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20
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Saleh N, Al-Jassabi S, Eid AH, Nau WM. Cucurbituril Ameliorates Liver Damage Induced by Microcystis aeruginosa in a Mouse Model. Front Chem 2021; 9:660927. [PMID: 33937198 PMCID: PMC8079933 DOI: 10.3389/fchem.2021.660927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 03/16/2021] [Indexed: 11/13/2022] Open
Abstract
Microcystis aeruginosa is a cyanobacterium that produces a variety of cyclic heptapeptide toxins in freshwater. The protective effects of the macromolecular container cucurbit[7]uril (CB7) were evaluated using mouse models of cyanotoxin-induced liver damage. Biochemical analysis of liver function was performed to gauge the extent of liver damage after exposure to cyanobacterial crude extract [CCE; LD50 = 35 mg/kg body weight; intraperitoneal (i.p.)] in the absence or presence of CB7 (35 mg/kg body weight, i.p.). CCE injection resulted in liver enlargement, potentiated the activities of alanine aminotransferase (ALT) and glutathione S-transferase (GST), increased lipid peroxidation (LPO), and reduced protein phosphatase 1 (PP1) activity. CCE-induced liver enlargement, ALT and GST activities, and LPO were significantly reduced when CB7 was coadministered. Moreover, the CCE-induced decline of PP1 activity was also ameliorated in the presence of CB7. Treatment with CB7 alone did not affect liver function, which exhibited a dose tolerance of 100 mg/kg body wt. Overall, our results illustrated that the addition of CB7 significantly reduced CCE-induced hepatotoxicity (P < 0.05).
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Affiliation(s)
- Na'il Saleh
- Department of Chemistry, College of Science, United Arab Emirates (UAE) University, Al Ain, United Arab Emirates
| | - Saad Al-Jassabi
- Faculty of Medicine, Unishams University, Kuala Ketil, Malaysia
| | - Ali H Eid
- Department of Basic Medical Sciences, College of Medicine, QU Health, Qatar University, Doha, Qatar.,Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha, Qatar
| | - Werner M Nau
- School of Engineering and Science, Jacobs University Bremen, Bremen, Germany
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21
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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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22
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23
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Shi Y, Laury ML, Wang Z, Ponder JW. AMOEBA binding free energies for the SAMPL7 TrimerTrip host-guest challenge. J Comput Aided Mol Des 2021; 35:79-93. [PMID: 33140208 PMCID: PMC7867568 DOI: 10.1007/s10822-020-00358-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 10/28/2020] [Indexed: 12/22/2022]
Abstract
As part of the SAMPL7 host-guest binding challenge, the AMOEBA force field was applied to calculate the absolute binding free energy for 16 charged organic ammonium guests to the TrimerTrip host, a recently reported acyclic cucurbituril-derived clip host structure with triptycene moieties at its termini. Here we report binding free energy calculations for this system using the AMOEBA polarizable atomic multipole force field and double annihilation free energy methodology. Conformational analysis of the host suggests three families of conformations that do not interconvert in solution on a time scale available to nanosecond molecular dynamics (MD) simulations. Two of these host conformers, referred to as the "indent" and "overlap" structures, are capable of binding guest molecules. As a result, the free energies of all 16 guests binding to both conformations were computed separately, and combined to produce values for comparison with experiment. Initial ranked results submitted as part of the SAMPL7 exercise had a mean unsigned error (MUE) from experimental binding data of 2.14 kcal/mol. Subsequently, a rigorous umbrella sampling reference calculation was used to better determine the free energy difference between unligated "indent" and "overlap" host conformations. Revised binding values for the 16 guests pegged to this umbrella sampling reference reduced the MUE to 1.41 kcal/mol, with a correlation coefficient (Pearson R) between calculated and experimental binding values of 0.832 and a rank correlation (Kendall τ) of 0.65. Overall, the AMOEBA results demonstrate no significant systematic error, suggesting the force field provides an accurate energetic description of the TrimerTrip host, and an appropriate balance of solvation and desolvation effects associated with guest binding.
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Affiliation(s)
- Yuanjun Shi
- Department of Chemistry, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Marie L Laury
- Department of Chemistry, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Zhi Wang
- Department of Chemistry, Washington University in St. Louis, Saint Louis, MO, 63130, USA
| | - Jay W Ponder
- Department of Chemistry, Washington University in St. Louis, Saint Louis, MO, 63130, USA.
- Department of Biochemistry & Molecular Biophysics, Washington University School of Medicine, Saint Louis, MO, 63110, USA.
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24
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Yin H, Zhang X, Wei J, Lu S, Bardelang D, Wang R. Recent advances in supramolecular antidotes. Theranostics 2021; 11:1513-1526. [PMID: 33391548 PMCID: PMC7738896 DOI: 10.7150/thno.53459] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 10/27/2020] [Indexed: 12/30/2022] Open
Abstract
Poisons always have fascinated humankind. Initially considered as deleterious or hazardous substances, the modern era has witnessed the controlled utilization of dangerous poisons in medicine and cosmetics. Simultaneously, antidotes have become crucial as reversal agents to counteract the effects of a poison, and they are also used today to positively cancel the benefits of a poison after use. Currently, the majority of poisons are composed of small molecules. This review focuses on recent developments to reverse or prevent toxic effects of poisons by encapsulation in host molecules. Cyclodextrins, cucurbiturils, acyclic cucurbituril derivatives, calixarenes, and pillararenes, have been reported to largely impact the effects of toxic compounds, thus extending the current paradigm of small molecule antidotes by adding a new family of macrocyclic compounds to the current arsenal of antidotes. Along this line of research, endogenous "harmful" species are also sequestered by one or more of these supramolecular host molecules, expanding the potential of supramolecular antidotes to diverse therapeutic areas.
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Affiliation(s)
- Hang Yin
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau, China
| | - Xiangjun Zhang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau, China
| | - Jianwen Wei
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau, China
| | - Siyu Lu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, 100 Kexue Road, Zhengzhou 450001, China
| | | | - Ruibing Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau, China
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25
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Murkli S, Klemm J, King D, Zavalij PY, Isaacs L. Acyclic Cucurbit[n]uril-Type Receptors: Aromatic Wall Extension Enhances Binding Affinity, Delivers Helical Chirality, and Enables Fluorescence Sensing. Chemistry 2020; 26:15249-15258. [PMID: 32658342 PMCID: PMC7704778 DOI: 10.1002/chem.202002874] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Indexed: 12/30/2022]
Abstract
We report the linear extension from M1 to M2 to anthracene walled M3 which adopts a helical conformation (X-ray) to avoid unfavorable interactions between sidewalls. M3 is water soluble (=30 mm) and displays enhanced optical properties (ϵ=1.28×105 m-1 cm-1 , λmax =370 nm) relative to M2. The binding properties of M3 toward guests 1-29 were examined by 1 H NMR and ITC. The M3⋅guest complexes are stronger than the analogous complexes of M2 and M1. The enhanced binding of M3 toward neuromuscular blockers 25, 27-29 suggests that M3 holds significant promise as an in vivo reversal agent. The changes in fluorescence observed for M3⋅guest complexes are a function of the relative orientation of the anthracene sidewalls, guest concentration, Ka , and guest electronics which rendered M3 a superb component of a fluorescence sensing array. The work establishes M3 as a next generation sequestering agent and a versatile component of fluorescence sensors.
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Affiliation(s)
- Steven Murkli
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - Jared Klemm
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, 20742, USA
| | - David King
- 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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26
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Deng CL, Murkli SL, Isaacs LD. Supramolecular hosts as in vivo sequestration agents for pharmaceuticals and toxins. Chem Soc Rev 2020; 49:7516-7532. [PMID: 33043945 PMCID: PMC7606718 DOI: 10.1039/d0cs00454e] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Pharmaceutical agents, drugs of abuse, and toxic substances have a large impact, positive and negative, on modern society. Efforts to mitigate the side effects of pharmaceuticals and counteract the life threatening effects of drugs of abuse and toxins can occur either by pharmacodynamic (PD) approaches based on bioreceptor·drug antagonism or by pharmacokinetic (PK) approaches that seek to reduce the concentration of free drug. In this tutorial review, we present the use of supramolecular hosts (cyclodextrins, calixarenes, (acyclic) cucurbiturils, and pillararenes) as in vivo sequestration agents for neuromuscular blockers, drugs of abuse (methamphetamine and fentanyl), anesthetics, neurotoxins, the pesticide paraquat, and heparin anti-coagulants by the PK approach. The review presents the basic physical and molecular recognition features of the supramolecular hosts and some of the principles used in their selection and structural optimization for in vivo sequestration applications. The influence of host·guest complexation on other relevant in vivo properties of drugs (e.g. distribution, circulation time, excretion, redox properties) is also mentioned. The article concludes with a discussion of future directions.
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Affiliation(s)
- Chun-Lin Deng
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA.
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27
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Shaya D, Isaacs L. Acyclic Cucurbit[n]uril-Type Containers as Receptors for Neuromuscular Blocking Agents: Structure-Binding Affinity Relationships. CROAT CHEM ACTA 2020; 92:163-171. [PMID: 32855560 DOI: 10.5562/cca3507] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Acyclic cucurbit[n]uril molecular containers 1 and 2C3 have previously been shown to strongly bind to the neuromuscular blocking agents rocuronium, vecuronium, pancuronium, and cisatracurium in vitro by optical methods and to reverse neuromuscular block in vivo in rats. In this paper we study the in vitro binding of a panel of acyclic CB[n]-type receptors toward the four neuromuscular blocking agents and acetylcholine to develop structure-binding affinity relationships. The selected variants include those with different aromatic sidewalls (e.g. 1Me4 with dimethyl o-xylylene walls; 3 with 1,8-linked naphthalene walls), with different glycoluril oligomer lengths (e.g. 4 and 5 based on glycoluril trimer), and with different linker lengths between aromatic wall and SO3 - solubilizing group (e.g. 2C2 - 2C4). Based on the analysis of complexation induced changes in 1H NMR chemical shift we conclude that the hydrophobic regions of the guests bind in the hydrophobic cavity of the hosts with the cationic moieties of the guest binding at the ureidyl C=O portals by ion-dipole and ion-ion interactions. The thermodynamic parameters of binding were determined by direct and competition isothermal titration calorimetry experiments. We find that hosts 4 and 5 based on glycoluril trimer form significantly weaker complexes with the streroidal NMBAs than with the analogues hosts based on glycoluril tetramer (1 and 2C3). Similarly, hosts 1Me4 and 3 with different length and height aromatic walls do not exhibit the extreme binding constants displayed by 2C3 but rather behave similarly to 1. Finally, we find that hosts 2C2 and 2C4 bind only slightly more weakly to the NMBAs than 2C3, but retain the ability to discriminate against acetylcholine, and possess higher inherent water solubility than 2C3. Host 2C4, in particular, holds potential for future in vivo applications.
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Affiliation(s)
- David Shaya
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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28
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Mutihac RC, Bunaciu AA, Buschmann HJ, Mutihac L. A brief overview on supramolecular analytical chemistry of cucurbit[n]urils and hemicucurbit[n]urils. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-01019-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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29
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Xue W, Zavalij PY, Isaacs L. Pillar[n]MaxQ: A New High Affinity Host Family for Sequestration in Water. Angew Chem Int Ed Engl 2020; 59:13313-13319. [PMID: 32413198 PMCID: PMC7487980 DOI: 10.1002/anie.202005902] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Indexed: 12/11/2022]
Abstract
We report the synthesis, X-ray crystal structure, and molecular recognition properties of pillar[n]arene derivative P[6]AS, which we refer to as Pillar[6]MaxQ along with analogues P[5]AS and P[7]AS toward guests 1-18. The ultratight binding affinity of P[5]AS and P[6]AS toward quaternary (di)ammonium ions renders them prime candidates for in vitro and in vivo non-covalent bioconjugation, for imaging and delivery applications, and as in vivo sequestration agents.
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Affiliation(s)
- Weijian Xue
- 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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30
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Dahan A, Boon M, van Velzen M, Niesters M. From breathtaking to encapsulation: a novel approach to reverse respiratory depression from opioid overdosing. Br J Anaesth 2020; 125:e16-e17. [DOI: 10.1016/j.bja.2020.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 03/28/2020] [Indexed: 10/24/2022] Open
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31
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Lu X, Zebaze Ndendjio SA, Zavalij PY, Isaacs L. Acyclic Cucurbit[ n]uril-Type Receptors: Optimization of Electrostatic Interactions for Dicationic Guests. Org Lett 2020; 22:4833-4837. [PMID: 32520574 PMCID: PMC7576436 DOI: 10.1021/acs.orglett.0c01637] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The synthesis of acyclic CB[n]-type host (1) is reported. By optimizing the placement of the sulfate groups nearby the electrostatically negative ureidyl C═O portals, the binding affinity of this class of receptors toward hydrophobic (di)ammonium guest molecules (5-23) is maximized. The X-ray crystal structures of 1·6a and 1·6d are reported.
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Affiliation(s)
- Xiaoyong Lu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Sandra A Zebaze Ndendjio
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Peter Y Zavalij
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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32
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Xue W, Zavalij PY, Isaacs L. Pillar[
n
]MaxQ: A New High Affinity Host Family for Sequestration in Water. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005902] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Weijian Xue
- 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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33
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Leonard MZ, Rostin P, Hill KP, Grabitz SD, Eikermann M, Miczek KA. The Molecular-Container Calabadion-2 Prevents Methamphetamine-Induced Reinstatement in Rats: A Potential Approach to Relapse Prevention? Int J Neuropsychopharmacol 2020; 23:401-405. [PMID: 32531049 PMCID: PMC7311644 DOI: 10.1093/ijnp/pyz070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/09/2019] [Accepted: 01/02/2020] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Reexposure to methamphetamine with a single "priming dose" can trigger intense cravings and precipitate relapse in methamphetamine-dependent individuals. The acyclic cucurbit[n]uril "molecular container" calabadion-2 shows a high affinity to bind and sequester methamphetamine in vitro and attenuates its locomotor-stimulating effect in rats. The present study investigates whether pretreatment with calabadion-2 is sufficient to prevent the reinstatement of drug seeking by a priming dose of methamphetamine in rats. METHODS Male Long-Evans rats were trained to self-administer i.v. methamphetamine (0.06 mg/kg/infusion). Following 10 days of stable self-administration, rats underwent extinction training and were subsequently tested on a multi-phase reinstatement procedure. Drug-primed reinstatement sessions (0.3 mg/kg methamphetamine, i.v.) were preceded by either saline or calabadion-2 (130 mg/kg). Additional reinstatement tests were conducted after administration of yohimbine (1.0 mg/kg, i.v.) to define the pharmacological specificity of calabadion-2. RESULTS Pretreatment with calabadion-2 significantly attenuated methamphetamine-induced reinstatement of responding. Cal2 did not affect drug-seeking behavior stimulated by the pharmacological stressor yohimbine, indicating a mechanism of action specific to methamphetamine. CONCLUSIONS These results demonstrate the effectiveness of calabadion-2 in a preclinical model relapse-like behavior. With further structural optimization, molecular containers may provide a novel and efficacious pharmacokinetic approach to relapse prevention for methamphetamine-dependent individuals.
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Affiliation(s)
| | - Paul Rostin
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
| | - Kevin P Hill
- Division of Addiction Psychiatry, Beth Israel Deaconess Medical Center, Boston, MA,Department of Psychiatry, Harvard Medical School, Boston, MA
| | - Stephanie D Grabitz
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
| | - Matthias Eikermann
- Department of Anesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA,Department of Anesthesiology and Intensive Care Medicine, University Duisburg-Essen, Essen, Germany,Correspondence: Klaus Miczek, PhD, Department of Psychology, Tufts University Medford, 530 Boston Ave, 02155, MA () and Matthias Eikermann, MD, PhD, Department of Anaesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, 330 Brookline Avenue, MA 02215 ()
| | - Klaus A Miczek
- Department of Psychology, Tufts University, Medford, MA,Departments of Neuroscience and Pharmacology, Tufts University, Boston, MA,Correspondence: Klaus Miczek, PhD, Department of Psychology, Tufts University Medford, 530 Boston Ave, 02155, MA () and Matthias Eikermann, MD, PhD, Department of Anaesthesia, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, 330 Brookline Avenue, MA 02215 ()
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34
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Smith AAA, Maikawa CL, Roth GA, Appel EA. Site-selective modification of proteins using cucurbit[7]uril as supramolecular protection for N-terminal aromatic amino acids. Org Biomol Chem 2020; 18:4371-4375. [PMID: 32459261 DOI: 10.1039/d0ob01004a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Cucurbit[7,8]urils are known to form inclusion complexes with aromatic amino acids, hosting the hydrohobic side chains within the cavity and adjacent cations within the portal of the macrocyclic host. Here we show that cucurbit[7]uril binding with N-terminal phenylalanine significantly reduces the nucleophilicity of the amine, likely due to an increase in stability of the ammonium ion, rendering it unreactive at neutral pH. Using insulin as a model protein, we show that this supramolecular protection strategy can drive selectivity of N-terminal amine conjugation away from the preferred B chain N-terminal phenylalanine towards the A chain N-terminal glycine. Cucurbit[7]uril can therefore be used as a supramolecular protecting group for site-selective protein modification.
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Affiliation(s)
- Anton A A Smith
- Department of Materials Science & Engineering, Stanford University, Stanford, CA 94305, USA. and Department of Chemistry, Aarhus University, 8000, Denmark
| | - Caitlin L Maikawa
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Gillie A Roth
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Eric A Appel
- Department of Materials Science & Engineering, Stanford University, Stanford, CA 94305, USA. and Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
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35
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Yu C, Resendiz-Gutierrez F, Hall FS. Molecular-container Calabadion-2: Can Sweeping the Brain of Drugs Promote Abstinence? Int J Neuropsychopharmacol 2020; 23:406-408. [PMID: 32403121 PMCID: PMC7311643 DOI: 10.1093/ijnp/pyaa037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Affiliation(s)
- Chen Yu
- Department of Pharmacology and Experimental Therapeutics, University of Toledo, Toledo, Ohio
| | | | - F Scott Hall
- Department of Pharmacology and Experimental Therapeutics, University of Toledo, Toledo, Ohio,Correspondence: F. Scott Hall, PhD, Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, 3000 Arlington Avenue, MS 1015, Toledo, OH 43614 ()
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36
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Calabadion 1 selectively reverses respiratory and central nervous system effects of fentanyl in a rat model. Br J Anaesth 2020; 125:e140-e147. [PMID: 32241547 DOI: 10.1016/j.bja.2020.02.019] [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: 11/27/2019] [Revised: 02/23/2020] [Accepted: 02/25/2020] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND We hypothesised that Calabadion 1, an acyclic cucurbit[n]uril molecular container, reverses fentanyl-induced respiratory depression and dysfunction of the CNS. METHODS Experiments were conducted in male Sprague-Dawley rats. A constant-rate i.v. infusion of fentanyl (12.5 or 25 μg kg-1 over 15 min) was administered followed by an i.v. bolus of Calabadion 1 (0.5-200 mg kg-1) or placebo. The primary outcome was reversal of ventilatory and respiratory depression, assessed by pneumotachography and arterial blood gas analysis, respectively. Key secondary outcomes were effects on fentanyl-induced central nervous dysfunction quantified by righting reflex, balance beam test, and electromyography (EMG). RESULTS Calabadion 1 reversed fentanyl-induced respiratory depression across the endpoints minute ventilation, pH, and Paco2 (P=0.001). Compared with placebo, Calabadion 1 dose dependently (P for trend <0.001) reversed fentanyl-induced hypoventilation {81.9 [5.1] (mean [standard error of the mean]) vs 45.5 [12.4] ml min-1; P<0.001}, acidosis (pH 7.43 [0.01] vs 7.28 [0.04]; P=0.005), and hypercarbia (Paco2 43.4 [1.6] vs 63.4 [8.1] mm Hg; P=0.018). The effective Calabadion 1 doses required to reverse respiratory depression by 50% and 90% (ED50Res and ED90Res) were 1.7 and 15.6 mg kg-1, respectively. Higher effective doses were needed for recovery of righting reflex (ED50CNS: 9.6 mg kg-1; ED90CNS: 86.1 mg kg-1), which was accelerated by Calabadion 1 (4.6 [0.3] vs 9.0 [0.7] min; P<0.001). Calabadion 1 also significantly accelerated recovery of full functional mobility and reversal of muscle rigidity. CONCLUSIONS Calabadion 1 selectively and dose dependently reversed the respiratory system and CNS side-effects of fentanyl.
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37
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Wang W, Finnegan TJ, Lei Z, Zhu X, Moore CE, Shi K, Badjić JD. Tuning the allosteric sequestration of anticancer drugs for developing cooperative nano-antidotes. Chem Commun (Camb) 2020; 56:1271-1274. [DOI: 10.1039/c9cc09373g] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dual-cavity baskets, carrying six γ-aminobutyric acids sequester anticancer anthracyclines in a cooperative manner to be of interest for creating nano-antidotes.
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Affiliation(s)
- Weikun Wang
- Department of Chemistry & Biochemistry
- The Ohio State University
- 43210 Columbus
- USA
| | - Tyler J. Finnegan
- Department of Chemistry & Biochemistry
- The Ohio State University
- 43210 Columbus
- USA
| | - Zhiquan Lei
- Department of Chemistry & Biochemistry
- The Ohio State University
- 43210 Columbus
- USA
| | - Xingrong Zhu
- Department of Chemistry & Biochemistry
- The Ohio State University
- 43210 Columbus
- USA
| | - Curtis E. Moore
- Department of Chemistry & Biochemistry
- The Ohio State University
- 43210 Columbus
- USA
| | - Kejia Shi
- Department of Chemistry & Biochemistry
- The Ohio State University
- 43210 Columbus
- USA
| | - Jovica D. Badjić
- Department of Chemistry & Biochemistry
- The Ohio State University
- 43210 Columbus
- USA
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38
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Pavlović RZ, Border SE, Li Y, Li X, Badjić JD. Photoinduced interruption of interannular cooperativity for delivery of cationic guests in water. Chem Commun (Camb) 2020; 56:2987-2990. [DOI: 10.1039/c9cc09903d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Photoinduced decarboxylation of two hexaanionic baskets, surrounding a divalent cationic guest, reduced the interannular cooperativity (i.e. multivalency) holding the complex together to result in the release of guests.
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Affiliation(s)
- Radoslav Z. Pavlović
- Department of Chemistry & Biochemistry
- The Ohio State University
- Columbus 43210
- USA
| | - Sarah E. Border
- Department of Chemistry & Biochemistry
- The Ohio State University
- Columbus 43210
- USA
| | - Yiming Li
- Department of Chemistry
- University of South Florida
- 33620 Tampa
- USA
| | - Xiaopeng Li
- Department of Chemistry
- University of South Florida
- 33620 Tampa
- USA
| | - Jovica D. Badjić
- Department of Chemistry & Biochemistry
- The Ohio State University
- Columbus 43210
- USA
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39
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Brady KG, Gilberg L, Sigwalt D, Bistany-Riebman J, Murkli S, Klemm J, Kulhánek P, Šindelář V, Isaacs L. Conformationally Mobile Acyclic Cucurbit[n]uril-Type Receptors Derived from an S-shaped Methylene Bridged Glycoluril Pentamer. Supramol Chem 2020; 32:479-494. [PMID: 33731981 DOI: 10.1080/10610278.2020.1795173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We report the synthesis of the conformationally mobile S-shaped glycoluril pentamer building block 3a and two new acyclic CB[n]-type receptors P1 and P2. P1 (9 mM) and P2 (11 mM) have moderate aqueous solubility but their host•guest complexes are poorly soluble. Host P1 does not undergo intermolecular self-association whereas P2 does (Ks = 189±27 M-1). 1H NMR titrations show that P1 and P2 are poor hosts toward hydrophobic (di)cations 6 - 11 (P1: Ka = 375-1400 M-1; P2: Ka = 1950-19800 M-1) compared to Tet1 and Tet2 (Tet1: Ka = 3.09 × 106 to 4.69 × 108 M-1; Tet2: Ka = 4.59 × 108 to 1.30 × 1010 M-1). Molecular modelling shows that P1 and P2 exist as a mixture of three different conformers due to the two S-shaped methylene bridged glycoluril dimer subunits that each possess two different conformations. The lowest energy conformers of P1 and P2 do not feature a well-defined central cavity. In the presence of guests, P2 adapts its conformation to form 1:1 P2•guest complexes; the binding free energy pays the energetic price of conformer selection. This energetically unfavorable conformer selection results in significantly decreased Ka values of P1 and P2 compared to Tet1 and Tet2.
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Affiliation(s)
- Kimberly G Brady
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Laura Gilberg
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States.,Department of Chemistry and RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - David Sigwalt
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Joshua Bistany-Riebman
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Steven Murkli
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Jared Klemm
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Petr Kulhánek
- CEITEC - Central European Institute of Technology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Vladimír Šindelář
- Department of Chemistry and RECETOX, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
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40
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Ndendjio SZ, Liu W, Yvanez N, Meng Z, Zavalij PY, Isaacs L. Triptycene Walled Glycoluril Trimer: Synthesis and Recognition Properties. NEW J CHEM 2019; 44:338-345. [PMID: 33867799 DOI: 10.1039/c9nj05336k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report the synthesis of a new acyclic CB[n]-type host (1) that features a central glycoluril trimer capped by triptycene sidewalls. Host 1 has good solubility in water (≈ 3 mM) and does not undergo strong self-association (Ks = 480 M-1). We probed the geometry of the complexes by analyzing the complexation induced changes in the 1H NMR spectra and measured the complexation thermodynamics by isothermal titration calorimetry. The conformation of 1 and its packing in the solid state was revealed by single crystal x-ray diffraction measurements.
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Affiliation(s)
- Sandra Zebaze Ndendjio
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
| | - Wenjin Liu
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA.,School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, P. R. China
| | - Nicolas Yvanez
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA.,École Nationale Supérieure de Chimie de Paris, 11 rue Pierre et Marie Curie, F75231 Paris cedex 05, France
| | - Zihui Meng
- School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing 100081, P. R. China
| | - Peter Y Zavalij
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
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41
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Xue W, Zavalij PY, Isaacs L. Triazole functionalized acyclic cucurbit[n]uril-type receptors: host·guest recognition properties. Org Biomol Chem 2019; 17:5561-5569. [PMID: 31112196 PMCID: PMC6572757 DOI: 10.1039/c9ob00906j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We report the synthesis of three new triazole functionalized acyclic CB[n]-type receptors (2-4) by click chemistry. The compounds have good solubility in water (≥8 mM) and do not undergo strong self-association (Ks ≤ 903 M-1). We measured the binding constants of 2-4 toward guests 9-24 and compared the results to those obtained for the prototypical acyclic CB[n]-type receptor 1. The X-ray crystal structure of 4 is also described.
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Affiliation(s)
- Weijian Xue
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA.
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42
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Zebaze Ndendjio SA, Isaacs L. Molecular recognition properties of acyclic cucurbiturils toward amino acids, peptides, and a protein. Supramol Chem 2019. [DOI: 10.1080/10610278.2019.1619737] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, USA
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43
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Liu W, Lu X, Meng Z, Isaacs L. A glycoluril dimer-triptycene hybrid receptor: synthesis and molecular recognition properties. Org Biomol Chem 2019; 16:6499-6506. [PMID: 30155536 DOI: 10.1039/c8ob01575a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The strategic combination of the methylene bridged glycoluril dimer and triptycene skeletons delivers acyclic water soluble hybrid receptor 1 which is analogous to cucurbit[6]uril. The molecular recognition properties of host 1 toward hydrophobic cationic guests are investigated in detail by a combination of 1H NMR spectroscopy and isothermal titration calorimetry (ITC) studies. The fluorescence emission of 1 can be selectively and efficiently quenched upon the formation of 1·26 and 1·28 complexes.
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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
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44
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Bauer D, Andrae B, Gaß P, Trenz D, Becker S, Kubik S. Functionalisable acyclic cucurbiturils. Org Chem Front 2019. [DOI: 10.1039/c9qo00156e] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Functionalised acyclic cucurbiturils can be prepared in a straightforward fashion and provide access to a wide variety of substituted derivatives.
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Affiliation(s)
- Daniel Bauer
- Technische Universität Kaiserslautern
- Fachbereich Chemie - Organische Chemie
- 67663 Kaiserslautern
- Germany
| | - Beatrice Andrae
- Technische Universität Kaiserslautern
- Fachbereich Chemie - Organische Chemie
- 67663 Kaiserslautern
- Germany
| | - Patrick Gaß
- Technische Universität Kaiserslautern
- Fachbereich Chemie - Organische Chemie
- 67663 Kaiserslautern
- Germany
| | - Danjano Trenz
- Organic Chemistry II
- Saarland University
- 66123 Saarbrücken
- Germany
| | - Sabine Becker
- Technische Universität Kaiserslautern
- Fachbereich Chemie - Anorganische Chemie
- 67663 Kaiserslautern
- Germany
| | - Stefan Kubik
- Technische Universität Kaiserslautern
- Fachbereich Chemie - Organische Chemie
- 67663 Kaiserslautern
- Germany
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45
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Abstract
Two acyclic CB[n]-type hosts (1 and 2) which possess four 2° or 3° amide arms are reported; 1 and 2 are slightly soluble in water and do not self-associate. Host 2 has four 3° amide arms that exist as a mixture of E- and Z-isomers. 1H NMR was used to qualitatively investigate the binding properties of 1 and 2 which indicates they retain the essential binding features of macrocyclic CB[n] hosts (e.g. cavity binding of hydrophobic residues and portal binding of cationic groups). We measured the Ka values of 1 and 2 toward guests 6 - 12, methamphetamine, and fentanyl by ITC to evaluate their potential as in vivo sequestration agents. Neutral hosts 1 and 2 bind less tightly than tetraanionic hosts M1, ACB1, and ACB2. We attribute the lower Ka values to the absence of secondary ion-ion (ammonium•••sulfonate or ammonium•••carboxylate) electrostatic interactions for host•guest complexes of 1 and 2. The secondary amide functionality on 1 decreases affinity by formation of intramolecular NH•••O=C H-bonds. Tertiary amide host 2 binds even more weakly than 1 due to backfolding of the amide N-CH3-groups of 2 into its own cavity. The x-ray crystal structure of 2 supports this conclusion.
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Affiliation(s)
- Weijian Xue
- 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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46
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Liu W, Ai H, Meng Z, Isaacs L, Xu Z, Xue M, Yan Q. Interactions between acyclic CB[n]-type receptors and nitrated explosive materials. Chem Commun (Camb) 2019; 55:10635-10638. [PMID: 31429448 DOI: 10.1039/c9cc05117a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The binding ability of acyclic CB[n]-type receptors M1, M2 and macrocyclic CB[7] toward explosive materials was investigated. Acyclic M2 demonstrates an overall better binding and solubilizing ability, and lower fluorescence in the presence of aromatic explosive compounds, suggesting its future application for the detection of harmful explosive materials.
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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.
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Gruber T. Synthetic Receptors for the Recognition and Discrimination of Post-Translationally Methylated Lysines. Chembiochem 2018; 19:2324-2340. [DOI: 10.1002/cbic.201800398] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Tobias Gruber
- School of Pharmacy; University of Lincoln; Joseph Banks Laboratories; Green Lane Lincoln LN6 7DL UK
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Pinalli R, Pedrini A, Dalcanale E. Biochemical sensing with macrocyclic receptors. Chem Soc Rev 2018; 47:7006-7026. [PMID: 30175351 DOI: 10.1039/c8cs00271a] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Preventive healthcare asks for the development of cheap, precise and non-invasive sensor devices for the early detection of diseases and continuous population screening. The actual techniques used for diagnosis, e.g. MRI and PET, or for biochemical marker sensing, e.g. immunoassays, are not suitable for continuous monitoring since they are expensive and prone to false positive responses. Synthetic supramolecular receptors offer new opportunities for the creation of specific, selective and cheap sensor devices for biological sensing of specific target molecules in complex mixtures of organic substances. The fundamental challenges faced in developing such devices are the precise transfer of the molecular recognition events at the solid-liquid interface and its transduction into a readable signal. In this review we present the progress made so far in turning synthetic macrocyclic hosts, namely cyclodextrins, calixarenes, cucurbiturils and cavitands, into effective biochemical sensors and the strategies utilized to solve the above mentioned issues. The performances of the developed sensing devices based on these receptors in detecting specific biological molecules, drugs and proteins are critically discussed.
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Affiliation(s)
- Roberta Pinalli
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy.
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Aryal GH, ViK R, Assaf KI, Hunter KW, Huang L, Jayawickramarajah J, Nau WM. Structural Effects on Guest Binding in Cucurbit[8]uril‐Perylenemonoimide Host‐Guest Complexes. ChemistrySelect 2018. [DOI: 10.1002/slct.201800696] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gyan H. Aryal
- Department of Microbiology and Immunology School of Medicine University of Nevada, Reno Reno, Nevada 89557 United States
| | - Ryan ViK
- Department of Chemistry Tulane University New Orleans LA 70118 United States
| | - Khaleel I. Assaf
- Department of Life Sciences and Chemistry Jacobs University Bremen Campus Ring 1 28759 Bremen Germany
| | - Kenneth W. Hunter
- Department of Microbiology and Immunology School of Medicine University of Nevada, Reno Reno, Nevada 89557 United States
| | - Liming Huang
- Department of Microbiology and Immunology School of Medicine University of Nevada, Reno Reno, Nevada 89557 United States
| | | | - Werner M. Nau
- Department of Life Sciences and Chemistry Jacobs University Bremen Campus Ring 1 28759 Bremen Germany
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Ganapati S, Isaacs L. Acyclic Cucurbit[n]uril-type Receptors: Preparation, Molecular Recognition Properties and Biological Applications. Isr J Chem 2018; 58:250-263. [PMID: 29805180 PMCID: PMC5966040 DOI: 10.1002/ijch.201700098] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This article traces the development of acyclic cucurbit[n]uril-type receptors with a focus on work from the Isaacs group. First, we describe the synthesis of methylene bridged glycoluril dimers capped with aromatic sidewalls which allowed us to probe the interconversion of the S- and C-shaped dimers which is a fundamental step in CB[n] formation. The C-shaped compounds were found to undergo discrete self-assembly (dimerization) in both water and organic solvents which lead us to investigate multicomponent self-sorting systems. We supressed the self-association of 8 by electrostatic repulsion in the putative dimer which allowed expression of its innate molecular recognition properties toward methylene blue and related planar cationic dyes. Longer glycoluril oligomers (trimer - hexamer, acyclic decamer) were prepared by starving the CB[n]-forming reaction of formaldehyde. The longer oligomers (e.g. 15 and 16) bind to alkylammonium ions in water ≈ 100-fold weaker than macrocyclic CB[n] highlighting the high preorganization of the acyclic but polycyclic framework. We prepared a wide variety of acyclic CB[n] compounds (wall variants, solubilizing group variants, linker variants) based on glycoluril trimer and tetramer. In particular, 26 and 27 have been shown to possess a wide variety of chemically and biologically interesting functions. For example, 26 was used to formulate the insoluble drug Albendazole and treat mice bearing SK-OV-3 xenograft tumors. Compound 27 binds tightly to the neuromuscular blocking agents rocuronium, vecuronium, and cisatracurium and acts as an in vivo reversal agent for these compounds in anesthetized rats. Container 27 was also found to modulate the hyperlocomotive effect of rats that had been treated with methamphetamine. Finally, 38 has been used as a cross reactive component of sensor arrays that are capable of classifying and quantifying cancer related nitroamines and a range of over the counter drugs. Overall, the work demonstrates that acyclic CB[n]-type compounds are nicely pre-organized and therefore retain the essential aspects of the recognition properties of macrocyclic CB[n] but allow for more straightforward tailoring of structure and solubility that enables a variety of chemically and biologically important applications.
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Affiliation(s)
- Shweta Ganapati
- Department of Chemistry and Biochemistry, University of Maryland College Park, College Park, Maryland 20742, USA
| | - Lyle Isaacs
- Department of Chemistry and Biochemistry, University of Maryland College Park, College Park, Maryland 20742, USA
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