1
|
Dikusar EA, Akishina EA, Petkevich SK, Zhukouskaya NA, Alekseyev RS, Bumagin NA, Shahab SN, Filippovich LN, Potkin VI. Synthesis of Bisacridine Derivatives with Pyridine and 1,2-Azole Fragments. RUSS J GEN CHEM+ 2022. [DOI: 10.1134/s1070363222010078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
2
|
Abdelmoniem AM, Hammad HF, Darweesh AF, Abdelaziz MA, Abdelhamid IA, Elwahy AHM. Hantzsch one-pot multicomponent synthesis of a novel series of bis(9,10-diarylhexahydroacridine-1,8-diones). SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1956541] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Hadeel F. Hammad
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Ahmed F. Darweesh
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | | | | | | |
Collapse
|
3
|
The Partner Does Matter: The Structure of Heteroaggregates of Acridine Orange in Water. Molecules 2019; 24:molecules24152816. [PMID: 31382361 PMCID: PMC6696166 DOI: 10.3390/molecules24152816] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 08/01/2019] [Accepted: 08/01/2019] [Indexed: 02/04/2023] Open
Abstract
Self-assembly of organic molecules in aqueous solutions is governed by a delicate entropy/enthalpy balance. Even small changes in their intermolecular interactions can cause critical changes in the structure of the aggregates and their spectral properties. The experimental results reported here demonstrate that protonated cations of acridine orange, acridine, and acridin-9-amine form stable J-heteroaggregates when in water. The structures of these aggregates are justified by the homonuclear 1H cross-relaxation nuclear magnetic resonance (NMR). The absorption and fluorescence of these aggregates deviate characteristically from the known H-homoaggregates of the protonated cations of acridine orange. The latter makes acridine orange a handy optical sensor for soft matter studies.
Collapse
|
4
|
Bhagat DS, Tekale SU, Dhas AK, Deshmukh SU, Pawar RP, Kendrekar PS. A Rapid and Convenient Synthesis of Acridine Derivatives Using Camphor Sulfonic Acid Catalyst. ORG PREP PROCED INT 2019. [DOI: 10.1080/00304948.2018.1549907] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- D. S. Bhagat
- Department of Chemistry, Deogiri College, Station Road, Aurangabad 431 005, MS, India
| | - S. U. Tekale
- Department of Chemistry, Deogiri College, Station Road, Aurangabad 431 005, MS, India
| | - A. K. Dhas
- Department of Chemistry, Deogiri College, Station Road, Aurangabad 431 005, MS, India
| | - S. U. Deshmukh
- Department of Chemistry, Deogiri College, Station Road, Aurangabad 431 005, MS, India
| | - R. P. Pawar
- Department of Chemistry, Deogiri College, Station Road, Aurangabad 431 005, MS, India
| | - P. S. Kendrekar
- Department of Health Sciences, Central University of Technology, Bloemfontein 9300, Free State, South Africa
| |
Collapse
|
5
|
Almendro-Vedia VG, García C, Ahijado-Guzmán R, de la Fuente-Herreruela D, Muñoz-Úbeda M, Natale P, Viñas MH, Albuquerque RQ, Guerrero-Martínez A, Monroy F, Pilar Lillo M, López-Montero I. Supramolecular zippers elicit interbilayer adhesion of membranes producing cell death. Biochim Biophys Acta Gen Subj 2018; 1862:2824-2834. [PMID: 30251671 PMCID: PMC6202437 DOI: 10.1016/j.bbagen.2018.08.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 08/03/2018] [Accepted: 08/27/2018] [Indexed: 11/28/2022]
Abstract
Background The fluorescent dye 10-N-nonyl acridine orange (NAO) is widely used as a mitochondrial marker. NAO was reported to have cytotoxic effects in cultured eukaryotic cells when incubated at high concentrations. Although the biochemical response of NAO-induced toxicity has been well identified, the underlying molecular mechanism has not yet been explored in detail. Methods We use optical techniques, including fluorescence confocal microscopy and lifetime imaging microscopy (FLIM) both in model membranes built up as giant unilamellar vesicles (GUVs) and cultured cells. These experiments are complemented with computational studies to unravel the molecular mechanism that makes NAO cytotoxic. Results We have obtained direct evidence that NAO promotes strong membrane adhesion of negatively charged vesicles. The attractive forces are derived from van der Waals interactions between anti-parallel H-dimers of NAO molecules from opposing bilayers. Semi-empirical calculations have confirmed the supramolecular scenario by which anti-parallel NAO molecules form a zipper of bonds at the contact region. The membrane remodeling effect of NAO, as well as the formation of H-dimers, was also confirmed in cultured fibroblasts, as shown by the ultrastructure alteration of the mitochondrial cristae. Conclusions We conclude that membrane adhesion induced by NAO stacking accounts for the supramolecular basis of its cytotoxicity. General significance Mitochondria are a potential target for cancer and gene therapies. The alteration of the mitochondrial structure by membrane remodeling agents able to form supramolecular assemblies via adhesion properties could be envisaged as a new therapeutic strategy. NAO promotes interbilayer adhesion of negatively charged lipid vesicles. Membrane adhesion derives from the self-assembly of NAO into antiparallel H-dimers. The adhesion strength promoted by antiparallel H-aggregates is 10−6 J/m2. The formation of NAO H-aggregates produces cell death in fibroblasts. The molecular mechanism of NAO cytotoxicity relies on the adhesion ability of H-dimers.
Collapse
Affiliation(s)
- Víctor G Almendro-Vedia
- Dto. Química Física, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain; Instituto de Investigación Hospital Doce de Octubre (i+12), Avenida de Córdoba s/n, 28041 Madrid, Spain
| | - Carolina García
- Dto. Química Física Biológica, Instituto de Química-Física "Rocasolano" (CSIC), Serrano 119, 28006 Madrid, Spain
| | - Rubén Ahijado-Guzmán
- Dto. Química Física, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Diego de la Fuente-Herreruela
- Dto. Química Física, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain; Instituto de Investigación Hospital Doce de Octubre (i+12), Avenida de Córdoba s/n, 28041 Madrid, Spain
| | - Mónica Muñoz-Úbeda
- Instituto de Investigación Hospital Doce de Octubre (i+12), Avenida de Córdoba s/n, 28041 Madrid, Spain
| | - Paolo Natale
- Dto. Química Física, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain; Instituto de Investigación Hospital Doce de Octubre (i+12), Avenida de Córdoba s/n, 28041 Madrid, Spain
| | - Montserrat H Viñas
- ETS de Sistemas Informáticos, Universidad Politécnica de Madrid, Alan Turing s/n, 28031 Madrid, Spain
| | - Rodrigo Queiroz Albuquerque
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, L3 3AF Liverpool, United Kingdom; São Carlos Institute of Chemistry, University of São Paulo (USP), 13566-590 São Carlos, Brazil
| | - Andrés Guerrero-Martínez
- Dto. Química Física, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain
| | - Francisco Monroy
- Dto. Química Física, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain; Instituto de Investigación Hospital Doce de Octubre (i+12), Avenida de Córdoba s/n, 28041 Madrid, Spain
| | - M Pilar Lillo
- Dto. Química Física Biológica, Instituto de Química-Física "Rocasolano" (CSIC), Serrano 119, 28006 Madrid, Spain
| | - Iván López-Montero
- Dto. Química Física, Universidad Complutense de Madrid, Avenida Complutense s/n, 28040 Madrid, Spain; Instituto de Investigación Hospital Doce de Octubre (i+12), Avenida de Córdoba s/n, 28041 Madrid, Spain.
| |
Collapse
|
7
|
Stornaiuolo M, De Kloe GE, Rucktooa P, Fish A, van Elk R, Edink ES, Bertrand D, Smit AB, de Esch IJP, Sixma TK. Assembly of a π-π stack of ligands in the binding site of an acetylcholine-binding protein. Nat Commun 2013; 4:1875. [PMID: 23695669 PMCID: PMC3674282 DOI: 10.1038/ncomms2900] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Accepted: 04/17/2013] [Indexed: 12/11/2022] Open
Abstract
Acetylcholine-binding protein is a water-soluble homologue of the extracellular ligand-binding domain of cys-loop receptors. It is used as a structurally accessible prototype for studying ligand binding to these pharmaceutically important pentameric ion channels, in particular to nicotinic acetylcholine receptors, due to conserved binding site residues present at the interface between two subunits. Here we report that an aromatic conjugated small molecule binds acetylcholine-binding protein in an ordered π-π stack of three identical molecules per binding site, two parallel and one antiparallel. Acetylcholine-binding protein stabilizes the assembly of the stack by aromatic contacts. Thanks to the plasticity of its ligand-binding site, acetylcholine-binding protein can accommodate the formation of aromatic stacks of different size by simple loop repositioning and minimal adjustment of the interactions. This type of supramolecular binding provides a novel paradigm in drug design.
Collapse
Affiliation(s)
- Mariano Stornaiuolo
- Division of Biochemistry and Center for Biomedical Genetics, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Bhattacharjee J, Hussain SA, Bhattacharjee D. Control of H-dimer formation of acridine orange using nano clay platelets. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 116:148-153. [PMID: 23933551 DOI: 10.1016/j.saa.2013.07.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 07/01/2013] [Accepted: 07/16/2013] [Indexed: 06/02/2023]
Abstract
Acridine orange (AO) forms dimer even in aqueous solution. In layer-by-layer (LbL) film of AO dimeric sites predominate over monomeric sites. This communication reports the control of H-dimer of AO in LbL film by incorporating nano clay platelets. This was studied by using UV-Vis absorption spectroscopy. Atomic force microscopic (AFM) image of the LbL film was taken to confirm the presence of nano clay platelets in the LbL film.
Collapse
Affiliation(s)
- J Bhattacharjee
- Department of Physics, Tripura University, Suryamaninagar 799022, Tripura, India
| | | | | |
Collapse
|
9
|
Rubia-Payá C, Jimenez-Millán E, Giner-Casares JJ, Brezesinski G, Martín-Romero MT, Camacho L. From two-dimensional to three-dimensional at the air/water interface: the self-aggregation of the acridine dye in mixed monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:4796-4805. [PMID: 23516967 DOI: 10.1021/la400483d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The formation of well-defined supramolecular structures on the nanoscopic scale is a fundamental step in nanotechnology. The fine control of the layer-by-layer growth of the supramolecular assemblies at interfaces is most desirable. The collapse of a mixed monolayer composed of two surfactants in an equimolar ratio (the organic dye N-10-dodecyl acridine (DAO) and stearic acid (SA)) is analyzed herein. The collapse process of the DAO/SA mixed monolayer has been monitored using surface pressure-molecular area (π-A) and surface potential isotherms, UV-visible reflection spectroscopy, polarization-modulated infrared reflection-absorption spectroscopy (PM-IRRAS), Brewster angle microscopy (BAM), and synchrotron-based in situ X-ray reflectivity (XRR) measurements. The collapse of the DAO/SA mixed monolayer leads to an ordered trilayer. The growth of anisotropic 2D domains of micrometric size is observed during the formation of the trilayer, related to the ordering of the acridine polar headgroups. The trilayer is organized with the first and third monolayers displaying the polar headgroups pointing to the aqueous subphase, whereas the intermediate layer displays the polar headgroups pointing to the air. The trilayer is stabilized by the strong self-aggregation acridine dye group of the DAO molecule. The controlled transition from a monolayer to a trilayer described herein is proposed as a model for further interfacial supramolecular structures of tunable thickness comprising organic dyes.
Collapse
Affiliation(s)
- Carlos Rubia-Payá
- Department of Physical Chemistry and Applied Thermodynamics, University of Córdoba, Campus de Rabanales, Edificio Marie Curie, Córdoba, Spain
| | | | | | | | | | | |
Collapse
|