1
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Pradhan NP, Namdev KR, Srivastava A. Molecular clips with spatially proximal urea residues for efficient transmembrane co-transport of H +/Cl - ions. Org Biomol Chem 2023; 22:74-79. [PMID: 38051156 DOI: 10.1039/d3ob01431b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
We report the design of bis(urea) functionalized amphiphilic molecular clips viz. 1a-1e to achieve efficient transmembrane co-transport of H+/Cl- ions. The most promising molecule 1a demonstrated a low nanomolar EC50 value (6.96 nM) to co-transport H+/Cl- ions via a carrier-mediated pathway and showed selective toxicity against cancerous HeLa cells as a result.
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Affiliation(s)
- Nyaya Prakash Pradhan
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India.
| | - Kavthekar Rupesh Namdev
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India.
| | - Aasheesh Srivastava
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India.
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2
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Das S, Karn R, Kumar M, Srimayee S, Manna D. A chloride-responsive molecular switch: driving ion transport and empowering antibacterial properties. Org Biomol Chem 2023; 22:114-119. [PMID: 38050426 DOI: 10.1039/d3ob01826a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
A molecular switch was developed to recognize and transport Cl- across lipid bilayers. The XRD-crystal structure and NOESY NMR spectra of a potent 4-aminoquinazoline analogue confirmed Cl--induced conformation changes. Systematic biophysical studies revealed that the quinazoline moiety forms cooperative interactions of H+ and Cl- ions with the thiourea moiety, resulting in the transport of H+/Cl- across the membranes. A pH-dependent analysis revealed that the transport of Cl- by the potent compound increased in an acidic environment. The potent compound could also transport H+/Cl- across Gram-positive bacteria, leading to antibacterial activities.
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Affiliation(s)
- Sribash Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam-781039, India.
| | - Rama Karn
- Centre for Environment, Indian Institute of Technology Guwahati, Assam-781039, India
| | - Mohit Kumar
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam-781039, India.
| | - Soumya Srimayee
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam-781039, India.
| | - Debasis Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam-781039, India.
- Centre for Environment, Indian Institute of Technology Guwahati, Assam-781039, India
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3
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Srimayee S, Badajena SR, Akhtar N, Kar MK, Dey S, Mohapatra P, Manna D. Stimuli-responsive release of active anionophore from RGD-peptide-linked proanionophore. Chem Commun (Camb) 2023; 59:12759-12762. [PMID: 37811603 DOI: 10.1039/d3cc02451b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Integrin-mediated cellular delivery was attempted to optimize practical applications of hydrophobic ionophores. The potent ionophore preferentially transports H+/Cl- across the lipid bilayers following a symport mechanism. The RGD-peptide-appended tag was stimulated by glutathione to generate the active ionophore, prompting the transport of Cl- under the cellular environment.
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Affiliation(s)
- Soumya Srimayee
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam-781039, India.
| | - Saumya Ranjan Badajena
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Changsari, Guwahati, Assam-781101, India
| | - Nasim Akhtar
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam-781039, India.
| | - Mrinal Kanti Kar
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam-781039, India.
| | - Subhasis Dey
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam-781039, India.
| | - Purusottam Mohapatra
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Changsari, Guwahati, Assam-781101, India
| | - Debasis Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam-781039, India.
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4
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Dey S, Patel A, Haloi N, Srimayee S, Paul S, Barik GK, Akhtar N, Shaw D, Hazarika G, Prusty BM, Kumar M, Santra MK, Tajkhorshid E, Bhattacharjee S, Manna D. Quinoline Thiourea-Based Zinc Ionophores with Antibacterial Activity. J Med Chem 2023; 66:11078-11093. [PMID: 37466499 DOI: 10.1021/acs.jmedchem.3c00368] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
The increasing resistance of bacteria to commercially available antibiotics threatens patient safety in healthcare settings. Perturbation of ion homeostasis has emerged as a potential therapeutic strategy to fight against antibacterial resistance and other channelopathies. This study reports the development of 8-aminoquinoline (QN) derivatives and their transmembrane Zn2+ transport activities. Our findings showed that a potent QN-based Zn2+ transporter exhibits promising antibacterial properties against Gram-positive bacteria with reduced hemolytic activity and cytotoxicity to mammalian cells. Furthermore, this combination showed excellent in vivo efficacy against Staphylococcus aureus. Interestingly, this combination prevented bacterial resistance and restored susceptibility of gentamicin and methicillin-resistant S. aureus to commercially available β-lactam and other antibiotics that had lost their activity against the drug-resistant bacterial strain. Our findings suggest that the transmembrane transport of Zn2+ by QN derivatives could be a promising strategy to combat bacterial infections and restore the activity of other antibiotics.
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Affiliation(s)
- Subhasis Dey
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Anjali Patel
- Centre for Environment, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Nandan Haloi
- Theoretical and Computational Biophysics Group, NIH Center for Macromolecular Modeling and Bioinformatics, Beckman Institute for Advanced Science and Technology, Department of Biochemistry, and Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Soumya Srimayee
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Suman Paul
- Department of Molecular Biology and Bioinformatics, Tripura University (A Central University), Suryamaninagar, Tripura 799022, India
| | | | - Nasim Akhtar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Dipanjan Shaw
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Gunanka Hazarika
- Centre for Environment, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Biswa Mohan Prusty
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Mohit Kumar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | | | - Emad Tajkhorshid
- Theoretical and Computational Biophysics Group, NIH Center for Macromolecular Modeling and Bioinformatics, Beckman Institute for Advanced Science and Technology, Department of Biochemistry, and Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Surajit Bhattacharjee
- Department of Molecular Biology and Bioinformatics, Tripura University (A Central University), Suryamaninagar, Tripura 799022, India
| | - Debasis Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
- Centre for Environment, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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5
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de Jong J, Bos JE, Wezenberg SJ. Stimulus-Controlled Anion Binding and Transport by Synthetic Receptors. Chem Rev 2023; 123:8530-8574. [PMID: 37342028 PMCID: PMC10347431 DOI: 10.1021/acs.chemrev.3c00039] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Indexed: 06/22/2023]
Abstract
Anionic species are omnipresent and involved in many important biological processes. A large number of artificial anion receptors has therefore been developed. Some of these are capable of mediating transmembrane transport. However, where transport proteins can respond to stimuli in their surroundings, creation of synthetic receptors with stimuli-responsive functions poses a major challenge. Herein, we give a full overview of the stimulus-controlled anion receptors that have been developed thus far, including their application in membrane transport. In addition to their potential operation as membrane carriers, the use of anion recognition motifs in forming responsive membrane-spanning channels is discussed. With this review article, we intend to increase interest in transmembrane transport among scientists working on host-guest complexes and dynamic functional systems in order to stimulate further developments.
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Affiliation(s)
| | | | - Sander J. Wezenberg
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333
CC Leiden, The Netherlands
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6
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Mondal A, Ahmad M, Mondal D, Talukdar P. Progress and prospects toward supramolecular bioactive ion transporters. Chem Commun (Camb) 2023; 59:1917-1938. [PMID: 36691926 DOI: 10.1039/d2cc06761g] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The majority of cellular physiological processes depend on natural ion channels, which are pore-forming membrane-embedded proteins that let ions flow across the cell membranes selectively. This selective movement of ions across the membranes balances the osmolality within and outside the cell. However, mutations in the genes that encode essential membrane transport proteins or structural reorganisation of these proteins can cause life-threatening diseases like cystic fibrosis. Artificial ion transport systems have opened up a way to replace dysfunctional natural ion channels to cure such diseases through channel replacement therapy. Moreover, recent research has also demonstrated the ability of these systems to kill cancer cells, reigniting interest in the field among scientists. Our contributions to the recent progress in the design and development of artificial chloride ion transporters and their effect on biological systems have been discussed in this review. This review would provide current vistas and future directions toward the development of novel ion transporters with improved biocompatibility and desired anti-cancer properties. Additionally, it strongly emphasises stimuli-responsive ion transport systems, which are crucial for obtaining target-specificity and may speed up the application of these systems in clinical therapeutics.
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Affiliation(s)
- Abhishek Mondal
- Chemistry Department, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India.
| | - Manzoor Ahmad
- Chemistry Department, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India. .,Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Debashis Mondal
- Chemistry Department, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India. .,Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Zwirkii Wigury 101, Warsaw 02-089, Poland
| | - Pinaki Talukdar
- Chemistry Department, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, Maharashtra, India.
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7
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Howe ENW, Chang VVT, Wu X, Fares M, Lewis W, Macreadie LK, Gale PA. Halide-selective, proton-coupled anion transport by phenylthiosemicarbazones. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2022; 1864:183828. [PMID: 34861222 DOI: 10.1016/j.bbamem.2021.183828] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/14/2021] [Accepted: 11/22/2021] [Indexed: 12/24/2022]
Abstract
Phenylthiosemicarbazones (PTSCs) are proton-coupled anion transporters with pH-switchable behaviour known to be regulated by an imine protonation equilibrium. Previously, chloride/nitrate exchange by PTSCs was found to be inactive at pH 7.2 due to locking of the thiourea anion binding site by an intramolecular hydrogen bond, and switched ON upon imine protonation at pH 4.5. The rate-determining process of the pH switch, however, was not examined. We here develop a new series of PTSCs and demonstrate their conformational behaviour by X-ray crystallographic analysis and pH-switchable anion transport properties by liposomal assays. We report the surprising finding that the protonated PTSCs are extremely selective for halides over oxyanions in membrane transport. Owing to the high chloride over nitrate selectivity, the pH-dependent chloride/nitrate exchange of PTSCs originates from the rate-limiting nitrate transport process being inhibited at neutral pH.
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Affiliation(s)
- Ethan N W Howe
- School of Chemistry (F11), The University of Sydney, NSW 2006, Australia
| | - Vai-Vai Tiffany Chang
- School of Chemistry (F11), The University of Sydney, NSW 2006, Australia; Chemistry, University of Southampton, Southampton SO17 1BJ, UK
| | - Xin Wu
- School of Chemistry (F11), The University of Sydney, NSW 2006, Australia
| | - Mohamed Fares
- School of Chemistry (F11), The University of Sydney, NSW 2006, Australia
| | - William Lewis
- School of Chemistry (F11), The University of Sydney, NSW 2006, Australia
| | - Lauren K Macreadie
- School of Chemistry (F11), The University of Sydney, NSW 2006, Australia
| | - Philip A Gale
- School of Chemistry (F11), The University of Sydney, NSW 2006, Australia; The University of Sydney Nano Institute (SydneyNano), The University of Sydney, NSW 2006, Australia.
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8
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Wezenberg SJ, Chen LJ, Bos JE, Feringa BL, Howe ENW, Wu X, Siegler MA, Gale PA. Photomodulation of Transmembrane Transport and Potential by Stiff-Stilbene Based Bis(thio)ureas. J Am Chem Soc 2022; 144:331-338. [PMID: 34932344 PMCID: PMC8759083 DOI: 10.1021/jacs.1c10034] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Indexed: 12/14/2022]
Abstract
Membrane transport proteins fulfill important regulatory functions in biology with a common trait being their ability to respond to stimuli in the environment. Various small-molecule receptors, capable of mediating transmembrane transport, have been successfully developed. However, to confer stimuli-responsiveness on them poses a fundamental challenge. Here we demonstrate photocontrol of transmembrane transport and electric potential using bis(thio)ureas derived from stiff-stilbene. UV-vis and 1H NMR spectroscopy are used to monitor E-Z photoisomerization of these bis(thio)ureas and 1H NMR titrations reveal stronger binding of chloride to the (Z)-form than to the (E)-form. Additional insight into the binding properties is provided by single crystal X-ray crystallographic analysis and DFT geometry optimization. Importantly, the (Z)-isomers are much more active in transmembrane transport than the respective (E)-isomers as shown through various assays. As a result, both membrane transport and depolarization can be modulated upon irradiation, opening up new prospects toward light-based therapeutics as well as physiological and optopharmacological tools for studying anion transport-associated diseases and to stimulate neuronal activity, respectively.
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Affiliation(s)
- Sander J. Wezenberg
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Li-Jun Chen
- School
of Chemistry, The University of Sydney, Sydney NSW 2006, Australia
| | - Jasper E. Bos
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Ben L. Feringa
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Ethan N. W. Howe
- School
of Chemistry, The University of Sydney, Sydney NSW 2006, Australia
| | - Xin Wu
- School
of Chemistry, The University of Sydney, Sydney NSW 2006, Australia
| | - Maxime A. Siegler
- Department
of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Philip A. Gale
- School
of Chemistry, The University of Sydney, Sydney NSW 2006, Australia
- The
University of Sydney Nano Institute (SydneyNano), The University of
Sydney, Sydney NSW 2006, Australia
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9
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Wenzel M, Steup J, Ohto K, Weigand JJ. Recent Advances in Guanidinium Salt Based Receptors and Functionalized Materials for the Recognition of Anions. CHEM LETT 2022. [DOI: 10.1246/cl.210527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Marco Wenzel
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Johannes Steup
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Keisuke Ohto
- Department of Chemistry and Applied Chemistry, Saga University, 1-Honjo, Saga 840-8502, Japan
| | - Jan J. Weigand
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
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10
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KHURANA RAMAN, Yang F, Khurana R, Liu J, Keinan E, Reany O. semiaza-Bambusurils are Anion-Specific Transmembrane Transporters . Chem Commun (Camb) 2022; 58:3150-3153. [DOI: 10.1039/d2cc00144f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
semiaza-Bambus[6]urils efficiently transport anions across lipid membranes. A systematic modification of their lipophilic side chains to include various alkyl groups and thioethers reveal that the most efficient chloride transporters are...
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11
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Abstract
Several life-threatening diseases, also known as 'Channelopathies' are linked to irregularities in ion transport proteins. Significant research efforts have fostered the development of artificial transport systems that facilitates to restore the functions of impaired natural transport proteins. Indeed, a few of these artificial ionophores demonstrate the rare combination of transmembrane ion transport and important biological activity, offering early promises of suitability in 'channel replacement therapy'. In this review, structural facets and functions of both cationophores and anionophores are discussed. Ionophores that are toxic to various bacteria and yeast, could be exploited as antimicrobial agent. Nevertheless, few non-toxic ionophores offer the likelihood of treating a wide range of genetic diseases caused by the gene mutations. In addition, their ability to disrupt cellular homeostasis and to alter lysosomal pH endow ionophores as promising candidates for cancer treatment. Overall, critically outlining the advances in artificial ionophores in terms of in vitro ion transport, possible modes of action and biological activities enables us to propose possible future roadmaps in this research area.
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Affiliation(s)
- Arundhati Roy
- Department of Pharmacy, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13, 81377, Munich, Germany
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, India
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12
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Martínez-Crespo L, Halgreen L, Soares M, Marques I, Félix V, Valkenier H. Hydrazones in anion transporters: the detrimental effect of a second binding site. Org Biomol Chem 2021; 19:8324-8337. [PMID: 34523662 DOI: 10.1039/d1ob01279g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Synthetic anion transporters can be developed using anion receptors that are able to bind the anion and stabilize it in the lipophilic interior of a bilayer membrane, and they usually contain functional groups with acidic NHs, such as ureas, thioureas and squaramides. To assess the suitability of acylhydrazones as a new functional group for the preparation of anion transporters, we have studied a family of thioureas functionalized with these and related functional groups. 1H NMR titrations and DFT calculations indicate that the thioureas bearing acylhydrazone groups behave as chloride receptors with two separate binding sites, of which the acylhydrazone binds weaker than the thiourea. Chloride transport studies show that the additional binding site has a detrimental effect on thiourea-based transporters, and this phenomenon is also observed for bis(thio)ureas with two separate binding sites. We propose that the presence of a second anion binding unit hinders the transport activity of the thiourea due to additional interactions with the phospholipids of the membrane. In agreement with this hypothesis, extensive molecular dynamics simulations suggest that the molecules will tend to be positioned in the water/lipid interface, driven by the interaction of the NHs of the thiourea and of the acylhydrazone groups with the POPC polar head groups and water molecules. Moreover, the interaction energies show that the poorest transporters have indeed the strongest interactions with the membrane phospholipids, inhibiting chloride transport. This detrimental effect of additional functional groups on transport activity should be considered when designing new ion transporters, unless these groups cooperatively promote anion recognition and transmembrane transport.
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Affiliation(s)
- Luis Martínez-Crespo
- Université Libre de Bruxelles (ULB), Engineering of Molecular NanoSystems, Ecole Polytechnique de Bruxelles, Avenue F.D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium.
| | - Lau Halgreen
- Université Libre de Bruxelles (ULB), Engineering of Molecular NanoSystems, Ecole Polytechnique de Bruxelles, Avenue F.D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium.
| | - Márcio Soares
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - Igor Marques
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - Vítor Félix
- CICECO - Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - Hennie Valkenier
- Université Libre de Bruxelles (ULB), Engineering of Molecular NanoSystems, Ecole Polytechnique de Bruxelles, Avenue F.D. Roosevelt 50, CP165/64, B-1050 Brussels, Belgium.
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13
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Akhtar N, Biswas O, Manna D. Stimuli-responsive transmembrane anion transport by AIE-active fluorescent probes. Org Biomol Chem 2021; 19:7446-7459. [PMID: 34612363 DOI: 10.1039/d1ob00584g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Anticancer drug resistance implicates multifunctional mechanisms, and hypoxia is one of the key factors in therapeutic resistance. Hypoxia-specific therapy is considered an extremely effective strategy to fight against cancer. The development of small molecule-based synthetic anion transporters has also recently drawn attention for their potential therapeutic applications against several ion-transport-associated diseases, such as cancer and others. Herein, we describe the development of a hypoxia-responsive proanionophore to trigger controlled transport of anions across membranes under pathogenic conditions. Herein, we report the development of tetraphenylethene (TPE)-based anion transporters. The sulfonium-linked p-nitrobenzyl containing TPE-based proanionophore could be converted into a lipophilic fluorescent Cl- ion carrier in a hypoxic or reductive environment. Stimuli such as nitroreductase (NTR) and glutathione (GSH) mediated regeneration of the TPE-based active Cl- ion transporter also showed aggregation-induced emission (AIE) properties. We hypothesize that such hypoxia and reductive stimuli activatable proanionophores have tremendous potential to fight against channelopathies, including cancer.
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Affiliation(s)
- Nasim Akhtar
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India.
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14
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Jiang L, Wang Q, Lei J, Tao K, Huang J, Zhao S, Hu N, Yang J. Mechanism study of how lipid vesicle electroformation is suppressed by the presence of sodium chloride. Colloids Surf B Biointerfaces 2021; 206:111951. [PMID: 34243032 DOI: 10.1016/j.colsurfb.2021.111951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 06/09/2021] [Accepted: 06/26/2021] [Indexed: 10/21/2022]
Abstract
Giant lipid vesicles (GLVs) are usually adopted as models of cell membranes and electroformation is the most commonly used method for GLV formation. However, GLV electroformation are known to be suppressed by the presence of salt and the mechanism is not clear so far. In this paper, the lipid hydration and GLV electroformation were investigated as a function of the concentration of sodium chloride by depositing the lipids on the bottom substrates and top substrates. In addition, the electrohydrodynamic force generated by the electroosmotic flow (EOF) on the lipid phase was calculated with COMSOL Multiphysics. It was found that the mechanisms for the failure of GLV electroformation in salt solutions are: 1) the presence of sodium chloride decreases the membrane permeability to aqueous solution by accelerating the formation of well-packed membranes, suppressing the swelling and detachment of the lipid membranes; 2) the presence of sodium chloride decreased the electrohydrodynamic force by increasing the medium conductivity.
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Affiliation(s)
- Lihua Jiang
- Chongqing Engineering and Technology Research Center of Intelligent Rehabilitation and Eldercare, Chongqing City Management College, Chongqing 400055, China
| | - Qiong Wang
- Chongqing Engineering and Technology Research Center of Intelligent Rehabilitation and Eldercare, Chongqing City Management College, Chongqing 400055, China; Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China.
| | - Jincan Lei
- Chongqing Engineering and Technology Research Center of Intelligent Rehabilitation and Eldercare, Chongqing City Management College, Chongqing 400055, China
| | - Ke Tao
- Chongqing Engineering and Technology Research Center of Intelligent Rehabilitation and Eldercare, Chongqing City Management College, Chongqing 400055, China
| | - Jing Huang
- Chongqing Engineering and Technology Research Center of Intelligent Rehabilitation and Eldercare, Chongqing City Management College, Chongqing 400055, China
| | - Shixian Zhao
- Chongqing Engineering and Technology Research Center of Intelligent Rehabilitation and Eldercare, Chongqing City Management College, Chongqing 400055, China
| | - Ning Hu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China
| | - Jun Yang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400030, China.
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15
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Formation of Giant Lipid Vesicles in the Presence of Nonelectrolytes—Glucose, Sucrose, Sorbitol and Ethanol. Processes (Basel) 2021. [DOI: 10.3390/pr9060945] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Lipid vesicles, especially giant lipid vesicles (GLVs), are usually adopted as cell membrane models and their preparation has been widely studied. However, the effects of some nonelectrolytes on GLV formation have not been specifically studied so far. In this paper, the effects of the nonelectrolytes, including sucrose, glucose, sorbitol and ethanol, and their coexistence with sodium chloride, on the lipid hydration and GLV formation were investigated. With the hydration method, it was found that the sucrose, glucose and sorbitol showed almost the same effect. Their presence in the medium enhanced the hydrodynamic force on the lipid membranes, promoting the GLV formation. GLV formation was also promoted by the presence of ethanol with ethanol volume fraction in the range of 0 to 20 percent, but higher ethanol content resulted in failure of GLV formation. However, the participation of sodium chloride in sugar solution and ethanol solution stabilized the lipid membranes, suppressing the GLV formation. In addition, the ethanol and the sodium chloride showed the completely opposite effects on lipid hydration. These results could provide some suggestions for the efficient preparation of GLVs.
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16
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Maslowska-Jarzyna K, Korczak ML, Wagner JA, Chmielewski MJ. Carbazole-Based Colorimetric Anion Sensors. Molecules 2021; 26:3205. [PMID: 34071969 PMCID: PMC8199442 DOI: 10.3390/molecules26113205] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/18/2021] [Accepted: 05/24/2021] [Indexed: 12/02/2022] Open
Abstract
Owing to their strong carbazole chromophore and fluorophore, as well as to their powerful and convergent hydrogen bond donors, 1,8-diaminocarbazoles are amongst the most attractive and synthetically versatile building blocks for the construction of anion receptors, sensors, and transporters. Aiming to develop carbazole-based colorimetric anion sensors, herein we describe the synthesis of 1,8-diaminocarbazoles substituted with strongly electron-withdrawing substituents, i.e., 3,6-dicyano and 3,6-dinitro. Both of these precursors were subsequently converted into model diamide receptors. Anion binding studies revealed that the new receptors exhibited significantly enhanced anion affinities, but also significantly increased acidities. We also found that rear substitution of 1,8-diamidocarbazole with two nitro groups shifted its absorption spectrum into the visible region and converted the receptor into a colorimetric anion sensor. The new sensor displayed vivid color and fluorescence changes upon addition of basic anions in wet dimethyl sulfoxide, but it was poorly selective; because of its enhanced acidity, the dominant receptor-anion interaction for most anions was proton transfer and, accordingly, similar changes in color were observed for all basic anions. The highly acidic and strongly binding receptors developed in this study may be applicable in organocatalysis or in pH-switchable anion transport through lipophilic membranes.
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Affiliation(s)
| | | | | | - Michał J. Chmielewski
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland; (K.M.-J.); (M.L.K.); (J.A.W.)
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Maslowska-Jarzyna K, Korczak ML, Chmielewski MJ. Boosting Anion Transport Activity of Diamidocarbazoles by Electron Withdrawing Substituents. Front Chem 2021; 9:690035. [PMID: 34095089 PMCID: PMC8172623 DOI: 10.3389/fchem.2021.690035] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 04/26/2021] [Indexed: 12/17/2022] Open
Abstract
Artificial chloride transporters have been intensely investigated in view of their potential medicinal applications. Recently, we have established 1,8-diamidocarbazoles as a versatile platform for the development of active chloride carriers. In the present contribution, we investigate the influence of various electron-withdrawing substituents in positions 3 and 6 of the carbazole core on the chloride transport activity of these anionophores. Using lucigenin assay and large unilamellar vesicles as models, the 3,6-dicyano- and 3,6-dinitro- substituted receptors were found to be highly active and perfectly deliverable chloride transporters, with EC50,270s value as low as 22 nM for the Cl-/NO3 - exchange. Mechanistic studies revealed that diamidocarbazoles form 1:1 complexes with chloride in lipid bilayers and facilitate chloride/nitrate exchange by carrier mechanism. Furthermore, owing to its increased acidity, the 3,6-dinitro- substituted receptor acts as a pH-switchable transporter, with physiologically relevant apparent pKa of 6.4.
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Affiliation(s)
| | | | - Michał J. Chmielewski
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Warsaw, Poland
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18
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Das S, Biswas O, Akhtar N, Patel A, Manna D. Multi-stimuli controlled release of a transmembrane chloride ion carrier from a sulfonium-linked procarrier. Org Biomol Chem 2020; 18:9246-9252. [PMID: 33150918 DOI: 10.1039/d0ob00938e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In recent times, anion transporters have received substantial consideration due to their ability to disrupt the ionic equilibrium across membrane bilayers. While numerous Cl- ion transporters were developed for channelopathies, unfortunately, poor aqueous solubility precluded their bioapplicability. Herein, we demonstrate the development of a multi-stimuli activatable anion transport approach to induce regulated transport of Cl- ions across membranes under specific conditions. The sulfonium-based procarrier was initially inactive, but the transmembrane transport of Cl- ions was activated in the presence of stimuli such as glutathione (GSH), reactive oxygen species (ROS) and light. The release of the hydrophobic anionophore from the aqueous-soluble procarrier under specific conditions leads to the successful transport of Cl- ions. Under physiological conditions, these anion carriers follow an antiport exchange mechanism to transport Cl- ions across lipid bilayers. Such multi-stimuli activatable procarriers have great potential to combat various types of channelopathies, including cancer, cystic fibrosis, kidney stones, myotonia, and others.
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Affiliation(s)
- Sribash Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India.
| | - Oindrila Biswas
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India.
| | - Nasim Akhtar
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India.
| | - Anjali Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India.
| | - Debasis Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India.
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Fares M, Wu X, Ramesh D, Lewis W, Keller PA, Howe ENW, Pérez‐Tomás R, Gale PA. Stimuli‐Responsive Cycloaurated “OFF‐ON” Switchable Anion Transporters. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006392] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Mohamed Fares
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
- School of Chemistry & Molecular Bioscience, Molecular Horizons University of Wollongong Illawarra Health & Medical Research Institute Wollongong NSW 2522 Australia
| | - Xin Wu
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
| | - Deepthi Ramesh
- Faculty of Medicine & Health Sciences Department of Pathology and Experimental Therapeutics Cancer Cell Biology Research Group University of Barcelona Barcelona Spain
| | - William Lewis
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
| | - Paul A. Keller
- School of Chemistry & Molecular Bioscience, Molecular Horizons University of Wollongong Illawarra Health & Medical Research Institute Wollongong NSW 2522 Australia
| | - Ethan N. W. Howe
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
- GlaxoSmithKline GSK Jurong 1 Pioneer Sector 1 Singapore 628413 Singapore
| | - Ricardo Pérez‐Tomás
- Faculty of Medicine & Health Sciences Department of Pathology and Experimental Therapeutics Cancer Cell Biology Research Group University of Barcelona Barcelona Spain
| | - Philip A. Gale
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
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20
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Fares M, Wu X, Ramesh D, Lewis W, Keller PA, Howe ENW, Pérez-Tomás R, Gale PA. Stimuli-Responsive Cycloaurated "OFF-ON" Switchable Anion Transporters. Angew Chem Int Ed Engl 2020; 59:17614-17621. [PMID: 32583552 DOI: 10.1002/anie.202006392] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Indexed: 01/28/2023]
Abstract
Anion transporters have shown potential application as anti-cancer agents that function by disrupting homeostasis and triggering cell death. In this research article we report switchable anion transport by gold complexes of anion transporters that are "switched on" in situ in the presence of the reducing agent GSH by decomplexation of gold. GSH is found in higher concentrations in tumors than in healthy tissue and hence this approach offers a strategy to target these systems to tumors.
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Affiliation(s)
- Mohamed Fares
- School of Chemistry, The University of Sydney, Sydney, New South Wales, 2006, Australia.,School of Chemistry & Molecular Bioscience, Molecular Horizons, University of Wollongong, Illawarra Health & Medical Research Institute, Wollongong, NSW, 2522, Australia
| | - Xin Wu
- School of Chemistry, The University of Sydney, Sydney, New South Wales, 2006, Australia
| | - Deepthi Ramesh
- Faculty of Medicine & Health Sciences, Department of Pathology and Experimental Therapeutics, Cancer Cell Biology Research Group, University of Barcelona, Barcelona, Spain
| | - William Lewis
- School of Chemistry, The University of Sydney, Sydney, New South Wales, 2006, Australia
| | - Paul A Keller
- School of Chemistry & Molecular Bioscience, Molecular Horizons, University of Wollongong, Illawarra Health & Medical Research Institute, Wollongong, NSW, 2522, Australia
| | - Ethan N W Howe
- School of Chemistry, The University of Sydney, Sydney, New South Wales, 2006, Australia.,GlaxoSmithKline, GSK Jurong, 1 Pioneer Sector 1, Singapore, 628413, Singapore
| | - Ricardo Pérez-Tomás
- Faculty of Medicine & Health Sciences, Department of Pathology and Experimental Therapeutics, Cancer Cell Biology Research Group, University of Barcelona, Barcelona, Spain
| | - Philip A Gale
- School of Chemistry, The University of Sydney, Sydney, New South Wales, 2006, Australia
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21
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Davis JT, Gale PA, Quesada R. Advances in anion transport and supramolecular medicinal chemistry. Chem Soc Rev 2020; 49:6056-6086. [PMID: 32692794 DOI: 10.1039/c9cs00662a] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Advances in anion transport by synthetic supramolecular systems are discussed in this article. Developments in the design of discrete molecular carriers for anions and supramolecular anion channels are reviewed followed by an overview of the use of these systems in biological systems as putative treatments for diseases such as cystic fibrosis and cancer.
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Affiliation(s)
- Jeffery T Davis
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA.
| | - Philip A Gale
- School of Chemistry (F11), The University of Sydney, NSW 2006, Australia.
| | - Roberto Quesada
- Departmento de Química, Universidad de Burgos, 09001 Burgos, Spain.
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Akhtar N, Pradhan N, Barik GK, Chatterjee S, Ghosh S, Saha A, Satpati P, Bhattacharyya A, Santra MK, Manna D. Quinine-Based Semisynthetic Ion Transporters with Potential Antiproliferative Activities. ACS APPLIED MATERIALS & INTERFACES 2020; 12:25521-25533. [PMID: 32425038 DOI: 10.1021/acsami.0c01259] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Synthetic ion transporters have attracted tremendous attention for their therapeutic potential against various ion-transport-related diseases, including cancer. Inspired by the structure and biological activities of natural products, we synthesized a small series of squaramide and thiourea derivatives of quinine and investigated their ion transport activities. The involvement of a quinuclidine moiety for the cooperative interactions of Cl- and H+ ions with the thiourea or squaramide moiety resulted in an effectual transport of these ions across membranes. The interference of ionic equilibrium by the potent Cl- ion carrier selectively induced cancer cell death by endorsing caspase-arbitrated apoptosis. In vivo assessment of the potent ionophore showed an efficient reduction in tumor growth with negligible immunotoxicity to other organs.
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Affiliation(s)
- Nasim Akhtar
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Nirmalya Pradhan
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | | | - Soumya Chatterjee
- Department of Zoology, University of Calcutta, Kolkata, West Bengal 700019, India
| | - Suvankar Ghosh
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Abhishek Saha
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Priyadarshi Satpati
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | | | | | - Debasis Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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23
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Biswas O, Akhtar N, Vashi Y, Saha A, Kumar V, Pal S, Kumar S, Manna D. Chloride Ion Transport by PITENINs across the Phospholipid Bilayers of Vesicles and Cells. ACS APPLIED BIO MATERIALS 2020; 3:935-944. [DOI: 10.1021/acsabm.9b00985] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Oindrila Biswas
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Nasim Akhtar
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Yoya Vashi
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Abhishek Saha
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Vishnu Kumar
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Sudipa Pal
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Sachin Kumar
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Debasis Manna
- Department of Chemistry, Indian Institute of Technology Guwahati, Assam 781039, India
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24
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Akhtar N, Biswas O, Manna D. Biological applications of synthetic anion transporters. Chem Commun (Camb) 2020; 56:14137-14153. [DOI: 10.1039/d0cc05489e] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transmembrane transport of anions by small molecules has recently been used to reduce the viability of cancer cells and fight against antibiotic-resistant and clinically relevant bacterial strains.
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Affiliation(s)
- Nasim Akhtar
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
| | - Oindrila Biswas
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
| | - Debasis Manna
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
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25
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Akhtar N, Pradhan N, Saha A, Kumar V, Biswas O, Dey S, Shah M, Kumar S, Manna D. Tuning the solubility of ionophores: glutathione-mediated transport of chloride ions across hydrophobic membranes. Chem Commun (Camb) 2019; 55:8482-8485. [DOI: 10.1039/c9cc04518j] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glutathione-mediated transformation of a water-soluble proanionophore to an active anionophore allows controlled transport of Cl− ion across hydrophobic lipid bilayers.
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Affiliation(s)
- Nasim Akhtar
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam-781039
- India
| | - Nirmalya Pradhan
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam-781039
- India
| | - Abhishek Saha
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam-781039
- India
| | - Vishnu Kumar
- Department of Bioscience and Bioengineering
- Indian Institute of Technology Guwahati
- Assam-781039
- India
| | - Oindrila Biswas
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam-781039
- India
| | - Subhasis Dey
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam-781039
- India
| | - Manisha Shah
- Department of Bioscience and Bioengineering
- Indian Institute of Technology Guwahati
- Assam-781039
- India
| | - Sachin Kumar
- Department of Bioscience and Bioengineering
- Indian Institute of Technology Guwahati
- Assam-781039
- India
| | - Debasis Manna
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Assam-781039
- India
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