1
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Aminoglycoside antibiotic kanamycin functionalized tetraphenylethylene molecular probe for highly selective detection of bovine serum albumin protein. Sci Rep 2022; 12:11526. [PMID: 35798871 PMCID: PMC9263133 DOI: 10.1038/s41598-022-15890-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 06/30/2022] [Indexed: 12/16/2022] Open
Abstract
A novel tetraphenylethylene (TPE) functionalized aminoglycoside antibiotic kanamycin (TPE-kana 1) has been successfully synthesized and characterized by means of modern analytical and spectroscopic techniques. The probe TPE-kana 1 showed strong affinity towards bovine serum albumin (BSA) compared to its other biological competitors. The recognition of BSA have been investigated employing UV–Vis absorption and fluorescence emission spectroscopy. The significant color change of TPE-kana 1 with BSA can be observed by necked eye, where the role of AIE-active TPE molecule is handle in both optical and colorimetric changes. The quenching of fluorescence of TPE-kana 1 with BSA was characterized by fluorescence spectroscopy, with 71.16% of quenching efficiency. Moreover, the Stern–Volmer quenching constant was calculated and found to be 2.46 × 107 M−1. Probe TPE-kana 1 showed detection limit of 2.87 nM (nM) towards BSA with binding constant 7.56 × 107 M. A molecular docking study is also performed to investigate the detail interactions between TPE-kana 1 with the sites of BSA via non-covalent i.e., H-bonding, π-cation interactions, π-donor hydrogen bonds and π-π interactions. The lowest binding energy conformation was found at − 10.42 kcal/mol.
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2
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Acceptor engineering for NIR-II dyes with high photochemical and biomedical performance. Nat Commun 2022; 13:3815. [PMID: 35780137 PMCID: PMC9250501 DOI: 10.1038/s41467-022-31521-y] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 06/07/2022] [Indexed: 11/18/2022] Open
Abstract
It is highly important and challenging to develop donor-acceptor-donor structured small-molecule second near-infrared window (NIR-II) dyes with excellent properties such as water-solubility and chem/photostability. Here, we discovery an electron acceptor, 6,7-di(thiophen-2-yl)-[1,2,5]thiadiazolo[3,4-g]quinoxaline (TQT) with highest stability in alkaline conditions, compared with conventional NIR-II building block benzobisthiadiazole (BBT) and 6,7-diphenyl-[1,2,5] thiadiazolo[3,4-g]quinoxaline (PTQ). The sulfonated hydrophilic dye, FT-TQT, is further synthesized with 2.13-fold increased quantum yield than its counterpart FT-BBT with BBT as acceptor. FT-TQT complexed with FBS is also prepared and displays a 16-fold increase in fluorescence intensity compared to FT-TQT alone. It demonstrates real-time cerebral and tumor vessel imaging capability with µm-scale resolution. Dynamic monitoring of tumor vascular disruption after drug treatment is achieved by NIR-II fluorescent imaging. Overall, TQT is an efficient electron acceptor for designing innovative NIR-II dyes. The acceptor engineering strategy provides a promising approach to design next generation of NIR-II fluorophores which open new biomedical applications. Small molecule NIR-II fluorophores are of interest for a range of applications but can suffer from chemical and photostability issues. Here, the authors report on the development of an acceptor molecule with improved stability in alkaline conditions expanding the range of possible applications.
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Andrade-Villalobos F, Zúñiga-Núñez D, Fuentealba D, Fierro A. Binding of toluidine blue-myristic acid derivative to cucurbit[7]uril and human serum albumin: computational and biophysical insights towards a biosupramolecular assembly. Phys Chem Chem Phys 2022; 24:3222-3230. [PMID: 35044390 DOI: 10.1039/d1cp04307b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A new toluidine blue-myristic acid photosensitizer derivate (TBOMyr) was investigated as a design molecule to bind simultaneously to cucurbit[7]uril (CB[7]) and human serum albumin (HSA) with the aim of constructing a biosupramolecular assembly. Molecular docking and dynamics calculations revealed the main supramolecular and bio-molecular interactions of TBOMyr with the macrocycle or the protein, respectively. The addition of the negatively charged myristic acid-like tail resulted in a unique conformation of the CB[7] complex where the phenothiazine core was included in the cavity of CB[7], leaving the fatty acid portion free to interact with the protein. A favorable ternary interaction between TBOMyr, CB[7] and HSA was suggested by the calculations, and an experimental binding affinity in the order of 105 M-1 was determined for the TBOMyr@CB[7] complex with HSA. The new TBOMyr derivative could find applications in photodynamic therapy benefiting from the biosupramolecular interactions as a transport system.
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Affiliation(s)
- Felipe Andrade-Villalobos
- Departamento de Química Orgánica, Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile. .,Laboratorio de Química Supramolecular y Fotobiología, Departamento de Química Física, Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile.
| | - Daniel Zúñiga-Núñez
- Laboratorio de Química Supramolecular y Fotobiología, Departamento de Química Física, Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile.
| | - Denis Fuentealba
- Laboratorio de Química Supramolecular y Fotobiología, Departamento de Química Física, Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile.
| | - Angelica Fierro
- Departamento de Química Orgánica, Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile.
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4
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Robinson-Duggon J, McTiernan CD, Muñoz M, Guerra D, Escobar Álvarez E, Andrade-Villalobos F, Fierro A, Edwards AM, Alarcon EI, Fuentealba D. Biosupramolecular complexes of amphiphilic photosensitizers with human serum albumin and cucurbit[7]uril as carriers for photodynamic therapy. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 223:112284. [PMID: 34450362 DOI: 10.1016/j.jphotobiol.2021.112284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 07/21/2021] [Accepted: 08/09/2021] [Indexed: 01/17/2023]
Abstract
In the present work, we evaluated the supramolecular interactions between three photosensitizers, namely toluidine blue O (TBO, positively charged) and two fatty acid conjugates of 6 and 14 carbon atoms chain lengths (TBOC6 and TBOC14), with human serum albumin (HSA) and the macrocycle cucurbit[7]uril (CB[7]), alone or in combination within a biosupramolecular system as potential carriers of photosensitizers for Photodynamic therapy (PDT). Binding studies were carried out using photophysical and calorimetric techniques and accompanied with molecular docking simulations. Amphiphilic photosensitizers, particularly TBOC14, showed stronger binding to HSA and (CB[7]). Comparing the different delivery systems, (CB[7]) had a marginal effect on cell uptake and phototoxicity in HeLa cells, while HSA showed enhanced cell uptake with phototoxicities that depended on the photosensitizer. Despite low cell uptake, the combination of both (CB[7]) and HSA was the most phototoxic, which illustrates the potential of combining these systems for PDT applications.
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Affiliation(s)
- José Robinson-Duggon
- Laboratorio de Química Biosupramolecular, Departamento de Química Física, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile; Departamento de Bioquímica, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá, Panamá 0824, Panamá.
| | - Christopher D McTiernan
- BEaTS Research Laboratory, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, ON K1Y4W7, Canada
| | - Marcelo Muñoz
- BEaTS Research Laboratory, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, ON K1Y4W7, Canada
| | - Daniel Guerra
- Laboratorio de Química Biosupramolecular, Departamento de Química Física, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile
| | - Elizabeth Escobar Álvarez
- Laboratorio de Química Biosupramolecular, Departamento de Química Física, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile
| | - Felipe Andrade-Villalobos
- Laboratorio de Química Biosupramolecular, Departamento de Química Física, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile; Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile
| | - Angélica Fierro
- Departamento de Química Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile
| | - Ana María Edwards
- Laboratorio de Química Biosupramolecular, Departamento de Química Física, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile
| | - Emilio I Alarcon
- BEaTS Research Laboratory, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, ON K1Y4W7, Canada; Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Denis Fuentealba
- Laboratorio de Química Biosupramolecular, Departamento de Química Física, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul, Santiago, Chile.
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Ponpao N, Senapak W, Saeeng R, Jaratjaroonphong J, Sirion U. Metal- and solvent-free synthesis of aniline- and phenol-based triarylmethanes via Brönsted acidic ionic liquid catalyzed Friedel-Crafts reaction. RSC Adv 2021; 11:22692-22709. [PMID: 35480415 PMCID: PMC9034371 DOI: 10.1039/d1ra03724b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 06/18/2021] [Indexed: 01/04/2023] Open
Abstract
A beneficial, scalable and efficient methodology for the synthesis of aniline-based triarylmethanes has been established through the double Friedel-Crafts reaction of commercial aldehydes and primary, secondary or tertiary anilines using Brönsted acidic ionic liquid as a powerful catalyst, namely [bsmim][NTf2]. This protocol was successfully performed under metal- and solvent-free conditions with a broad range of substrates, giving the corresponding aniline-based triarylmethane products in good to excellent yields (up to 99%). In addition, alternative aromatic nucleophiles such as phenols and electron-rich arenes were also studied using this useful approach to achieve a diversity of triarylmethane derivatives in high to excellent yields.
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Affiliation(s)
- Nipaphorn Ponpao
- Department of Chemistry, Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University Sangesook ChonBuri 20131 Thailand +66-3-839-3494 +66-98-026-2181
| | - Warapong Senapak
- Department of Chemistry, Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University Sangesook ChonBuri 20131 Thailand +66-3-839-3494 +66-98-026-2181
| | - Rungnapha Saeeng
- Department of Chemistry, Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University Sangesook ChonBuri 20131 Thailand +66-3-839-3494 +66-98-026-2181
- The Research Unit in Synthetic Compounds and Synthetic Analogues from Natural Product for Drug Discovery (RSND), Burapha University Chonburi 20131 Thailand
| | - Jaray Jaratjaroonphong
- Department of Chemistry, Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University Sangesook ChonBuri 20131 Thailand +66-3-839-3494 +66-98-026-2181
- The Research Unit in Synthetic Compounds and Synthetic Analogues from Natural Product for Drug Discovery (RSND), Burapha University Chonburi 20131 Thailand
| | - Uthaiwan Sirion
- Department of Chemistry, Center of Excellence for Innovation in Chemistry, Faculty of Science, Burapha University Sangesook ChonBuri 20131 Thailand +66-3-839-3494 +66-98-026-2181
- The Research Unit in Synthetic Compounds and Synthetic Analogues from Natural Product for Drug Discovery (RSND), Burapha University Chonburi 20131 Thailand
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Mohammed-Saeid W, Karoyo AH, Verrall RE, Wilson LD, Badea I. Inclusion Complexes of Melphalan with Gemini-Conjugated β-Cyclodextrin: Physicochemical Properties and Chemotherapeutic Efficacy in In-Vitro Tumor Models. Pharmaceutics 2019; 11:pharmaceutics11090427. [PMID: 31443452 PMCID: PMC6781286 DOI: 10.3390/pharmaceutics11090427] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/06/2019] [Accepted: 08/10/2019] [Indexed: 11/16/2022] Open
Abstract
β-cyclodextrin (βCD) has been widely explored as an excipient for pharmaceuticals and nutraceuticals as it forms stable host–guest inclusion complexes and enhances the solubility of poorly soluble active agents. To enhance intracellular drug delivery, βCD was chemically conjugated to an 18-carbon chain cationic gemini surfactant which undergoes self-assembly to form nanoscale complexes. The novel gemini surfactant-modified βCD carrier host (hereafter referred to as 18:1βCDg) was designed to combine the solubilization and encapsulation capacity of the βCD macrocycle and the cell-penetrating ability of the gemini surfactant conjugate. Melphalan (Mel), a chemotherapeutic agent for melanoma, was selected as a model for a poorly soluble drug. Characterization of the 18:1βCDg-Mel host–guest complex was carried out using 1D/2D 1H NMR spectroscopy and dynamic light scattering (DLS). The 1D/2D NMR spectral results indicated the formation of stable and well-defined 18:1βCDg-Mel inclusion complexes at the 2:1 host–guest mole ratio; whereas, host–drug interaction was attenuated at greater 18:1βCDg mole ratio due to hydrophobic aggregation that accounts for the reduced Mel solubility. The in vitro evaluations were performed using monolayer, 3D spheroid, and Mel-resistant melanoma cell lines. The 18:1βCDg-Mel complex showed significant enhancement in the chemotherapeutic efficacy of Mel with 2–3-fold decrease in Mel half maximal inhibitory concentration (IC50) values. The findings demonstrate the potential applicability of the 18:1βCDg delivery system as a safe and efficient carrier for a poorly soluble chemotherapeutic in melanoma therapy.
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Affiliation(s)
- Waleed Mohammed-Saeid
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, 107 Wiggins Rd, Saskatoon, SK S7N 5E5, Canada
- College of Pharmacy, Taibah University, Medina 42353, Saudi Arabia
| | - Abdalla H Karoyo
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
| | - Ronald E Verrall
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
| | - Lee D Wilson
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
| | - Ildiko Badea
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, 107 Wiggins Rd, Saskatoon, SK S7N 5E5, Canada.
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7
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Cáceres J, Robinson-Duggon J, Tapia A, Paiva C, Gómez M, Bohne C, Fuentealba D. Photochemical behavior of biosupramolecular assemblies of photosensitizers, cucurbit[n]urils and albumins. Phys Chem Chem Phys 2018; 19:2574-2582. [PMID: 28059428 DOI: 10.1039/c6cp07749h] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Biosupramolecular assemblies combining cucurbit[n]urils (CB[n]s) and proteins for the targeted delivery of drugs have the potential to improve the photoactivity of photosensitizers used in the photodynamic therapy of cancer. Understanding the complexity of these systems and how it affects the properties of photosensitizers is the focus of this work. We used acridine orange (AO+) as a model photosensitizer and compared it with methylene blue (MB+) and a cationic porphyrin (TMPyP4+). Encapsulation of the photosensitizers into CB[n]s (n = 7, 8) modified their photoactivity. In particular, for AO+, the photo-oxidation of HSA was enhanced in the presence of CB[7]; meanwhile it was decreased when included into CB[8]. Accordingly, peroxide generation and protein fragmentation were also increased when AO+ was encapsulated into CB[7]. The triplet excited state lifetimes of all the photosensitizers were lengthened by their encapsulation into CB[n]s, while the singlet oxygen quantum yield was enhanced only for AO+ and TMPyP4+, but it decreased for MB+. The results obtained in this work prompt the necessity of further investigating these kinds of hybrid assemblies as drug delivery systems because of their possible applications in biomedicine.
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Affiliation(s)
- Javiera Cáceres
- Laboratorio de Estructuras Biosupramoleculares, Departamento de Química Física, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile.
| | - José Robinson-Duggon
- Laboratorio de Estructuras Biosupramoleculares, Departamento de Química Física, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile.
| | - Anita Tapia
- Laboratorio de Estructuras Biosupramoleculares, Departamento de Química Física, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile.
| | - Constanza Paiva
- Laboratorio de Estructuras Biosupramoleculares, Departamento de Química Física, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile.
| | - Matías Gómez
- Laboratorio de Estructuras Biosupramoleculares, Departamento de Química Física, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile.
| | - Cornelia Bohne
- Department of Chemistry, University of Victoria, P.O. Box 1700 STN CSC, Victoria, BC V8W 2Y2, Canada
| | - Denis Fuentealba
- Laboratorio de Estructuras Biosupramoleculares, Departamento de Química Física, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago, Chile.
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8
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Affiliation(s)
- Stephan Sinn
- Institute of Nanotechnology (INT); Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland/Germany
| | - Frank Biedermann
- Institute of Nanotechnology (INT); Karlsruhe Institute of Technology (KIT); Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Deutschland/Germany
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9
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Vasu AK, Khurana R, Mohanty J, Kanvah S. pH-responsive molecular assemblies of pyridylbutadiene derivative with cucurbit[7]uril. RSC Adv 2018; 8:16738-16745. [PMID: 35540531 PMCID: PMC9080325 DOI: 10.1039/c8ra03355b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 04/21/2018] [Indexed: 12/17/2022] Open
Abstract
pH-responsive emission behavior of supramolecular complexes between pyridylbutadiene with CB7 and formation of molecular assemblies is described.
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Affiliation(s)
- Anuji K. Vasu
- Department of Chemistry
- Indian Institute of Technology Gandhinagar
- Gandhinagar 382 355
- India
| | - Raman Khurana
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai
- India
- Homi Bhabha National Institute
| | - Jyotirmayee Mohanty
- Radiation & Photochemistry Division
- Bhabha Atomic Research Centre
- Mumbai
- India
- Homi Bhabha National Institute
| | - Sriram Kanvah
- Department of Chemistry
- Indian Institute of Technology Gandhinagar
- Gandhinagar 382 355
- India
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10
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New C 2 -symmetric six-membered carbene ligands incorporating two hydroxyl groups for palladium-catalyzed deprotonative-cross-coupling processes (DCCP) of sp 3 C–H bonds in diarylmethanes. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.09.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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11
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Karam TE, Siraj N, Zhang Z, Ezzir AF, Warner IM, Haber LH. Ultrafast and nonlinear spectroscopy of brilliant green-based nanoGUMBOS with enhanced near-infrared emission. J Chem Phys 2017; 147:144701. [DOI: 10.1063/1.4994712] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Tony E. Karam
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Noureen Siraj
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, Arkansas 72204, USA
| | - Zhenyu Zhang
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Abdulrahman F. Ezzir
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Isiah M. Warner
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Louis H. Haber
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
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12
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Le NDB, Tonga GY, Mout R, Kim ST, Wille ME, Rana S, Dunphy KA, Jerry DJ, Yazdani M, Ramanathan R, Rotello CM, Rotello VM. Cancer Cell Discrimination Using Host-Guest "Doubled" Arrays. J Am Chem Soc 2017; 139:8008-8012. [PMID: 28535040 PMCID: PMC5848078 DOI: 10.1021/jacs.7b03657] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We report a nanosensor that uses cell lysates to rapidly profile the tumorigenicity of cancer cells. This sensing platform uses host-guest interactions between cucurbit[7]uril and the cationic headgroup of a gold nanoparticle to non-covalently modify the binding of three fluorescent proteins of a multi-channel sensor in situ. This approach doubles the number of output channels to six, providing single-well identification of cell lysates with 100% accuracy. Significantly, this classification could be extended beyond the training set, determining the invasiveness of novel cell lines. The unique fingerprint of these cell lysates required minimal sample quantity (200 ng, ∼1000 cells), making the methodology compatible with microbiopsy technology.
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Affiliation(s)
- Ngoc D. B. Le
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Gulen Yesilbag Tonga
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Rubul Mout
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Sung-Tae Kim
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, USA
- Department of Pharmaceutical Engineering, Inje University, 197, Inje-ro, Gimhae-si, Gyeongsangnam-do, Republic of Korea
| | - Marcos E. Wille
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Subinoy Rana
- Department of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - Karen A. Dunphy
- Department of Veterinary and Animal Science, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - D. Joseph Jerry
- Department of Veterinary and Animal Science, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Mahdieh Yazdani
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Rajesh Ramanathan
- Ian Potter NanoBioSensing Facility, NanoBiotechnology Research Laboratory, School of Sciences, RMIT University GPO Box 2476 V, Melbourne, Victoria 3001, Australia
| | - Caren M. Rotello
- Department of Psychology and Brain Sciences, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Vincent M. Rotello
- Department of Chemistry, University of Massachusetts Amherst, Amherst, MA 01003, USA
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Barooah N, Kunwar A, Khurana R, Bhasikuttan AC, Mohanty J. Stimuli-Responsive Cucurbit[7]uril-Mediated BSA Nanoassembly for Uptake and Release of Doxorubicin. Chem Asian J 2016; 12:122-129. [DOI: 10.1002/asia.201601411] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 11/14/2016] [Indexed: 12/11/2022]
Affiliation(s)
- Nilotpal Barooah
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
| | - Amit Kunwar
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
| | - Raman Khurana
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
- Homi Bhabha National Institute; Training School Complex; Anushaktinagar Mumbai 400 094 India
| | - Achikanath C. Bhasikuttan
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
- Homi Bhabha National Institute; Training School Complex; Anushaktinagar Mumbai 400 094 India
| | - Jyotirmayee Mohanty
- Radiation & Photochemistry Division; Bhabha Atomic Research Centre; Mumbai 400 085 India
- Homi Bhabha National Institute; Training School Complex; Anushaktinagar Mumbai 400 094 India
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14
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Rösch C, Kratz F, Hering T, Trautmann S, Umanskaya N, Tippkötter N, Müller-Renno C, Ulber R, Hannig M, Ziegler C. Albumin-lysozyme interactions: Cooperative adsorption on titanium and enzymatic activity. Colloids Surf B Biointerfaces 2016; 149:115-121. [PMID: 27744208 DOI: 10.1016/j.colsurfb.2016.09.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 09/02/2016] [Accepted: 09/29/2016] [Indexed: 12/20/2022]
Abstract
The interplay of albumin (BSA) and lysozyme (LYZ) adsorbed simultaneously on titanium was analyzed by gel electrophoresis and BCA assay. It was found that BSA and lysozyme adsorb cooperatively. Additionally, the isoelectric point of the respective protein influences the adsorption. Also, the enzymatic activity of lysozyme and amylase (AMY) in mixtures with BSA was considered with respect to a possible influence of protein-protein interaction on enzyme activity. Indeed, an increase of lysozyme activity in the presence of BSA could be observed. In contrast, BSA does not influence the activity of amylase.
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Affiliation(s)
- Christina Rösch
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, D-67663, Kaiserslautern, Germany
| | - Fabian Kratz
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, D-67663, Kaiserslautern, Germany
| | - Thomas Hering
- Institute of Bioprocess Engineering, University of Kaiserslautern, D-67663, Kaiserslautern, Germany
| | - Simone Trautmann
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University of the Saarland, D-66421, Homburg, Germany
| | - Natalia Umanskaya
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University of the Saarland, D-66421, Homburg, Germany
| | - Nils Tippkötter
- Institute of Bioprocess Engineering, University of Kaiserslautern, D-67663, Kaiserslautern, Germany
| | - Christine Müller-Renno
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, D-67663, Kaiserslautern, Germany
| | - Roland Ulber
- Institute of Bioprocess Engineering, University of Kaiserslautern, D-67663, Kaiserslautern, Germany
| | - Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, University of the Saarland, D-66421, Homburg, Germany
| | - Christiane Ziegler
- Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, D-67663, Kaiserslautern, Germany.
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15
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Bandyopadhyay A, Pati SK. Role of donor-acceptor macrocycles in sequence specific peptide recognition and their optoelectronic properties: a detailed computational insight. Phys Chem Chem Phys 2016; 18:20682-90. [PMID: 27412849 DOI: 10.1039/c6cp03181a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we have considered an experimentally synthesized organic donor-acceptor (D-A) macrocycle (CPP-TCAQ) and have modified it by incorporating different acceptor groups. We have performed density functional theory and classical molecular dynamics studies on these D-A macrocycles. We have clearly shown that cyclo[10]paraphenylene-2,6-tetracyanoanthraquinodimethanylene (CPP-TCAQ) isomers interact specifically with one particular peptide sequence tyr-leu-ala, over its structural isomer, tyr-ala-leu. However, other functionalized macrocycles bind to the tyr-ala-leu peptide sequence over tyr-leu-ala. Our calculations show that the presence of hydrogen bonds as well as π-π interactions responsible for this specific selection. Interestingly, it is the additional charge transfer induced dipolar interactions that favour binding of the tripeptide with the bulky C-terminal leucine amino acid, tyr-ala-leu. We confirmed that these host-guest complexes are stable in water medium as well as at room temperature. Thus, these hosts can bind effectively to any protein fragment bearing a particular tripeptide. Interestingly, the macrocycle, which recognizes the peptide sequence with a bulky C-terminal amino acid, also shows photophysical properties. The reasons for this happen to be the same (dipolar interactions introduce dipole allowed states for optical absorption as well as attracting the oppositely oriented dipolar groups). Recognition of the peptide sequence with a bulky C-terminal group is carried out for the first time with this functionalised macrocycle, which in addition shows photophysical properties.
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Affiliation(s)
- Arkamita Bandyopadhyay
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, Karnataka 560064, India.
| | - Swapan K Pati
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, Karnataka 560064, India. and Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, Karnataka 560064, India
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16
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Programming A Molecular Relay for Ultrasensitive Biodetection through 129
Xe NMR. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508990] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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17
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Wang Y, Roose BW, Philbin JP, Doman JL, Dmochowski IJ. Programming A Molecular Relay for Ultrasensitive Biodetection through (129)Xe NMR. Angew Chem Int Ed Engl 2015; 55:1733-6. [PMID: 26692420 DOI: 10.1002/anie.201508990] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Indexed: 01/13/2023]
Abstract
A supramolecular strategy for detecting specific proteins in complex media by using hyperpolarized (129) Xe NMR is reported. A cucurbit[6]uril (CB[6])-based molecular relay was programmed for three sequential equilibrium conditions by designing a two-faced guest (TFG) that initially binds CB[6] and blocks the CB[6]-Xe interaction. The protein analyte recruits the TFG and frees CB[6] for Xe binding. TFGs containing CB[6]- and carbonic anhydrase II (CAII)-binding domains were synthesized in one or two steps. X-ray crystallography confirmed TFG binding to Zn(2+) in the deep CAII active-site cleft, which precludes simultaneous CB[6] binding. The molecular relay was reprogrammed to detect avidin by using a different TFG. Finally, Xe binding by CB[6] was detected in buffer and in E. coli cultures expressing CAII through ultrasensitive (129) Xe NMR spectroscopy.
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Affiliation(s)
- Yanfei Wang
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Benjamin W Roose
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104-6323, USA
| | - John P Philbin
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Jordan L Doman
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104-6323, USA
| | - Ivan J Dmochowski
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, PA, 19104-6323, USA.
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18
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Scholtbach K, Venegas Í, Bohne C, Fuentealba D. Time-resolved fluorescence anisotropy as a tool to study guest–cucurbit[n]uril–protein ternary supramolecular interactions. Photochem Photobiol Sci 2015; 14:842-52. [DOI: 10.1039/c4pp00479e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A combined time-resolved fluorescence and anisotropy analysis was used to study guest–cucurbit[n]uril–protein ternary supramolecular interactions in a model system.
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Affiliation(s)
- Karina Scholtbach
- Laboratorio de Química Biológica
- Departamento de Química Física
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Santiago
| | - Ítalo Venegas
- Laboratorio de Química Biológica
- Departamento de Química Física
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Santiago
| | - Cornelia Bohne
- Department of Chemistry
- University of Victoria
- Victoria
- Canada V8W 3V6
| | - Denis Fuentealba
- Laboratorio de Química Biológica
- Departamento de Química Física
- Facultad de Química
- Pontificia Universidad Católica de Chile
- Santiago
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19
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Sayed M, Biedermann F, Uzunova VD, Assaf KI, Bhasikuttan AC, Pal H, Nau WM, Mohanty J. Triple emission from p-dimethylaminobenzonitrile-cucurbit[8]uril triggers the elusive excimer emission. Chemistry 2014; 21:691-6. [PMID: 25393034 DOI: 10.1002/chem.201404902] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Indexed: 11/08/2022]
Abstract
The intriguing dual-emission behavior of p- dimethylaminobenzonitrile (DMABN) and the identity of the associated excited states is, arguably, the most extensively investigated and also controversially discussed molecule- specific phenomenon of modern photochemistry. We have now found a new, third fluorescence band when DMABN is encapsulated within the water-soluble molecular container cucurbit[8]uril (CB8). It is centered between the previously observed emissions and assigned to the elusive excimer emission from DMABN through 1:2 CB8:DMABN complex formation. Heating of the CB8⋅(DMABN)2 complex from 0 to 100 °C results in the dissociation of the ternary complex and restoration of the dual-emission properties of the monomer. Alternatively, monomer emission can be obtained by selecting cucurbit[7]uril (CB7), a host homologue that is too small to accommodate two DMABN molecules, or by introducing ethyl instead of methyl groups at the amino terminus of the aminobenzonitrile guest.
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Affiliation(s)
- Mhejabeen Sayed
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085 (India), Fax: (+91) 22-25505151/25519613
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20
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Bergamini G, Fermi A, Marchini M, Locritani M, Credi A, Venturi M, Negri F, Ceroni P, Baroncini M. A Highly Luminescent Tetramer from a Weakly Emitting Monomer: Acid- and Redox-Controlled Multiple Complexation by Cucurbit[7]uril. Chemistry 2014; 20:7054-60. [DOI: 10.1002/chem.201400375] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Indexed: 11/11/2022]
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21
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De Filippo CC, Tang H, Ravotto L, Bergamini G, Salice P, Mba M, Ceroni P, Galoppini E, Maggini M. Synthesis and Electronic Properties of 1,2‐Hemisquarimines and Their Encapsulation in a Cucurbit[7]uril Host. Chemistry 2014; 20:6412-20. [DOI: 10.1002/chem.201400039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Indexed: 01/15/2023]
Affiliation(s)
- Christian C. De Filippo
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova (Italy), Fax: (+) 30 0498275050
| | - Hao Tang
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ ‐ 07102 (USA)
| | - Luca Ravotto
- Department of Chemistry “G. Ciamician”, Via Selmi 2, 40126 Bologna (Italy)
| | - Giacomo Bergamini
- Department of Chemistry “G. Ciamician”, Via Selmi 2, 40126 Bologna (Italy)
| | - Patrizio Salice
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova (Italy), Fax: (+) 30 0498275050
| | - Miriam Mba
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova (Italy), Fax: (+) 30 0498275050
| | - Paola Ceroni
- Department of Chemistry “G. Ciamician”, Via Selmi 2, 40126 Bologna (Italy)
| | - Elena Galoppini
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ ‐ 07102 (USA)
| | - Michele Maggini
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova (Italy), Fax: (+) 30 0498275050
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22
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Wang P, Lin Y, Smith M, Feng S, Song B, Yang S, Hu J. Host–guest interaction manipulated self-assembly of pyridinium-tailored naphthalene. Chem Commun (Camb) 2014; 50:11950-3. [DOI: 10.1039/c4cc05538a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
In this communication, host–guest interactions are employed to manipulate the assembled morphology of 2-NP. By encapsulating the pyridinium and the naphthalene group of 2-NP into the cavity of cucurbit[8]uril, fluorescence-enhanced microsheets were formed.
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Affiliation(s)
- Peiyi Wang
- State Key Lab Breeding Base of Green Pesticide & Agricultural Bioengineering Centre for R&D of Fine Chemicals
- Guizhou University
- Guiyang, China
| | - Yuan Lin
- State Key Lab of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
| | - Mark Smith
- Department of Chemistry and Biochemistry
- University of South Carolina
- Columbia, USA
| | - Sheng Feng
- Department of Chemistry and Biochemistry
- University of South Carolina
- Columbia, USA
| | - Baoan Song
- State Key Lab Breeding Base of Green Pesticide & Agricultural Bioengineering Centre for R&D of Fine Chemicals
- Guizhou University
- Guiyang, China
| | - Song Yang
- State Key Lab Breeding Base of Green Pesticide & Agricultural Bioengineering Centre for R&D of Fine Chemicals
- Guizhou University
- Guiyang, China
| | - Jun Hu
- State Key Lab of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
- Department of Chemistry and Biochemistry
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23
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Pandeeswar M, Khare H, Ramakumar S, Govindaraju T. Biomimetic molecular organization of naphthalene diimide in the solid state: tunable (chiro-) optical, viscoelastic and nanoscale properties. RSC Adv 2014. [DOI: 10.1039/c3ra47257d] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Biomimetic molecular organization of naphthalene diimide in the solid state: tunable (chiro-) optical, viscoelastic and nanoscale properties.
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Affiliation(s)
- M. Pandeeswar
- Bioorganic Chemistry Laboratory
- New Chemistry Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bangalore 560064, India
| | | | | | - T. Govindaraju
- Bioorganic Chemistry Laboratory
- New Chemistry Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bangalore 560064, India
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24
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Nambo M, Crudden CM. Modular Synthesis of Triarylmethanes through Palladium-Catalyzed Sequential Arylation of Methyl Phenyl Sulfone. Angew Chem Int Ed Engl 2013; 53:742-6. [DOI: 10.1002/anie.201307019] [Citation(s) in RCA: 132] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 10/10/2013] [Indexed: 12/14/2022]
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25
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Nambo M, Crudden CM. Modular Synthesis of Triarylmethanes through Palladium-Catalyzed Sequential Arylation of Methyl Phenyl Sulfone. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201307019] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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26
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Lei W, Jiang G, Zhou Q, Hou Y, Zhang B, Cheng X, Wang X. Self-Assembly of Anionic Porphyrins and Alkaline or Alkaline Earth Metal Ions Mediated by Cucurbit[7,8]uril. Chemphyschem 2013; 14:1003-8. [DOI: 10.1002/cphc.201201025] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Indexed: 11/11/2022]
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27
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Jia X, Li J, Wang E. Lighting-up of the dye malachite green with mercury(II)-DNA and its application for fluorescence turn-off detection of cysteine and glutathione. Chemistry 2012; 18:13494-500. [PMID: 22944915 DOI: 10.1002/chem.201103768] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 06/27/2012] [Indexed: 01/08/2023]
Abstract
This work describes a novel strategy for the highly sensitive and selective detection of cysteine (Cys) and glutathione (GSH) based on the Hg(2+)-AGRO100-malachite green (MG) complex system. The dye MG, which has a very low quantum yield in aqueous solution by itself, can bind with the thymine-rich DNA AGRO100 in the presence of Hg(2+) ions to generate a striking fluorescence intensity enhancement of 1000-fold. As sulfur-containing amino acids, Cys and GSH effectively sequester Hg(2+) ions from the Hg(2+)-AGRO100-MG complex structure to switch the 'lit-up' chemosensor to the 'off' state (about a 50-fold fluorescence intensity decrease), thus providing a facile, but effective, method to probe for Cys/GSH. The fluorescence titration, UV absorption, CD, and Raman spectra provide some insight into the structural and chemical basis for the enhancement effect. The formation of the Hg(2+)-AGRO100-MG complex significantly affects the electronic structure and conformation of the MG molecule by leading to an extended π system, which is the likely origin of the observed striking fluorescence intensity enhancement. Notably, the proposed sensing platform exhibits exquisite selectivity and sensitivity toward Cys/GSH with limits of detection of 5 nM for Cys and 10 nM for GSH, respectively. Furthermore, the straightforward assay design avoids labeling of the probe, uses only commercially available materials, and still displays comparable sensitivity and excellent selectivity.
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Affiliation(s)
- Xiaofang Jia
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P.R. China
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28
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Jiao D, Geng J, Loh XJ, Das D, Lee TC, Scherman OA. Supramolecular Peptide Amphiphile Vesicles through Host-Guest Complexation. Angew Chem Int Ed Engl 2012; 51:9633-7. [DOI: 10.1002/anie.201202947] [Citation(s) in RCA: 178] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 06/18/2012] [Indexed: 01/18/2023]
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29
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Jiao D, Geng J, Loh XJ, Das D, Lee TC, Scherman OA. Supramolecular Peptide Amphiphile Vesicles through Host-Guest Complexation. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202947] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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Biedermann F, Elmalem E, Ghosh I, Nau WM, Scherman OA. Strongly Fluorescent, Switchable Perylene Bis(diimide) Host-Guest Complexes with Cucurbit[8]uril In Water. Angew Chem Int Ed Engl 2012; 51:7739-43. [DOI: 10.1002/anie.201202385] [Citation(s) in RCA: 176] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Indexed: 01/19/2023]
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31
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Biedermann F, Elmalem E, Ghosh I, Nau WM, Scherman OA. Strongly Fluorescent, Switchable Perylene Bis(diimide) Host-Guest Complexes with Cucurbit[8]uril In Water. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202385] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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32
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Abstract
We conceptualize a novel approach towards enzyme assays based on the reversible and competitive binding of a fluorescent dye and the substrate as well as product of an enzymatic reaction to a macrocyclic host. This method was termed "supramolecular tandem assay", and has been applied to inhibitor and activator screening, sensor array development, and enantiomeric excess determination of amino acids. The simple and rapid read-out by fluorescence allows their straightforward implementation into high-throughput screening.
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Affiliation(s)
- Roy N Dsouza
- School of Engineering and Science, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
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33
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Mandal AK, Suresh M, Das P, Das A. Restricted Conformational Flexibility of a Triphenylamine Derivative on the Formation of Host-Guest Complexes with Various Macrocyclic Hosts. Chemistry 2012; 18:3906-17. [DOI: 10.1002/chem.201103079] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2011] [Indexed: 12/21/2022]
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34
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Lei W, Zhou Q, Jiang G, Hou Y, Zhang B, Cheng X, Wang X. Host-Guest Interaction of Hoechst 34580 and Cucurbit[7]uril. Chemphyschem 2011; 12:2933-40. [DOI: 10.1002/cphc.201100495] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 08/06/2011] [Indexed: 01/07/2023]
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35
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36
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Bhasikuttan AC, Dutta Choudhury S, Pal H, Mohanty J. Supramolecular Assemblies of Thioflavin T with Cucurbiturils: Prospects of Cooperative and Competitive Metal Ion Binding. Isr J Chem 2011. [DOI: 10.1002/ijch.201100039] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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37
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Urbach AR, Ramalingam V. Molecular Recognition of Amino Acids, Peptides, and Proteins by Cucurbit[n]uril Receptors. Isr J Chem 2011. [DOI: 10.1002/ijch.201100035] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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38
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Mohanty J, Jagtap K, Ray AK, Nau WM, Pal H. Molecular Encapsulation of Fluorescent Dyes Affords Efficient Narrow-band Dye Laser Operation in Water. Chemphyschem 2010; 11:3333-8. [DOI: 10.1002/cphc.201000532] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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39
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Shaikh M, Dutta Choudhury S, Mohanty J, Bhasikuttan A, Nau W, Pal H. Modulation of Excited-State Proton Transfer of 2-(2′-Hydroxyphenyl)benzimidazole in a Macrocyclic Cucurbit[7]uril Host Cavity: Dual Emission Behavior and pKaShift. Chemistry 2009; 15:12362-70. [DOI: 10.1002/chem.200900390] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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Gadde S, Batchelor EK, Kaifer AE. Controlling the formation of cyanine dye H- and J-aggregates with cucurbituril hosts in the presence of anionic polyelectrolytes. Chemistry 2009; 15:6025-31. [PMID: 19402091 DOI: 10.1002/chem.200802546] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The presence of anionic polyelectrolytes enhances the tendency of cationic cyanine dyes to form aggregates in aqueous media. In this work we investigate the interactions between two cyanine dyes, pseudoisocyanine (PIC) and pinacyanol (PIN), with polystyrenesulfonate (PSS) as the key additive to develop J- and H-aggregates. We also take advantage of the binding properties of the cucurbit[7]uril (CB7) host to control formation of these aggregates through its host-guest interactions with the dye molecules. UV/Vis absorption spectroscopic studies clearly demonstrate the PSS-enhanced formation of J-aggregates in the case of PIC and H-aggregates in the case of PIN. Electrostatic interactions between the cyanine dye molecules and the polyelectrolyte chains assist the formation of J- or H-aggregates at very low dye concentrations (ca. 10 microM). Optimum development of dye aggregates was observed at a sulfonate/dye molar ratio of about 3:1. Departures from this stoichiometric ratio seem to perturb the optimal aggregate structure. Furthermore, the presence of CB7 was found to effectively disrupt the interactions responsible for dye aggregation. Thus, CB7 completely disrupts the J-aggregates formed by PIC and the H-aggregates (as well as lower concentrations of J-aggregates) formed by PIN. UV/Vis and emission spectroscopic studies clearly indicate that binding of CB7 to both dye molecules removes them from the aggregate structures. Our spectroscopic data clearly indicate that regulation of the relative molar ratios of dye, CB7 host, and polyelectrolyte sulfonate groups leads to a quantitative control of dye aggregation, yielding variable amounts of PIC J- and PIN H-aggregates in these solutions.
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Affiliation(s)
- Suresh Gadde
- Center for Supramolecular Science and Department of Chemistry, University of Miami, Coral Gables, FL 33124-0431, USA
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41
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Mohanty J, Dutta Choudhury S, Upadhyaya H, Bhasikuttan A, Pal H. Control of the Supramolecular Excimer Formation of Thioflavin T within a Cucurbit[8]uril Host: A Fluorescence On/Off Mechanism. Chemistry 2009; 15:5215-9. [DOI: 10.1002/chem.200802686] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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42
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Bhasikuttan A, Mohanty J, Pal H. Interaction of Malachite Green with Guanine-Rich Single-Stranded DNA: Preferential Binding to a G-Quadruplex. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200703251] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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