1
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Johnson TG, Sadeghi-Kelishadi A, Langton MJ. Length dependent reversible off-on activation of photo-switchable relay anion transporters. Chem Commun (Camb) 2024; 60:7160-7163. [PMID: 38910566 DOI: 10.1039/d4cc02603a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
A homologous series of azobenzene-derived photo-switchable ion relay transporters is reported. We reveal that both the length and geometry of the relay strongly affect transport rate, allowing the relative activity of the E and Z isomers to be reversed and hence the wavelengths of light used for on and off switching to be exchanged.
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Affiliation(s)
- Toby G Johnson
- Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK.
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2
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Ahmad M, Johnson TG, Flerin M, Duarte F, Langton MJ. Responsive Anionophores with AND Logic Multi-Stimuli Activation. Angew Chem Int Ed Engl 2024; 63:e202403314. [PMID: 38517056 DOI: 10.1002/anie.202403314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/19/2024] [Accepted: 03/21/2024] [Indexed: 03/23/2024]
Abstract
Artificial ion transport systems have emerged as an important class of compounds that promise applications in chemotherapeutics as anticancer agents or to treat channelopathies. Stimulus-responsive systems that offer spatiotemporally controlled activity for targeted applications remain rare. Here we utilize dynamic hydrogen bonding interactions of a 4,6-dihydroxy-isophthalamide core to generate a modular platform enabling access to stimuli-responsive ion transporters that can be activated in response to a wide variety of external stimuli, including light, redox, and enzymes, with excellent OFF-ON activation profiles. Alkylation of the two free hydroxyl groups with stimulus-responsive moieties locks the amide bonds through intramolecular hydrogen bonding and hence makes them unavailable for anion binding and transport. Triggering using a particular stimulus to cleave both cages reverses the hydrogen bonding arrangement, to generate a highly preorganized anion binding cavity for efficient transmembrane transport. Integration of two cages that are responsive to orthogonal stimuli enables multi-stimuli activation, where both stimuli are required to trigger transport in an AND logic process. Importantly, the strategy provides a facile method to post-functionalize the highly active transporter core with a variety of stimulus-responsive moieties for targeted activation with multiple triggers.
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Affiliation(s)
- Manzoor Ahmad
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Toby G Johnson
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Martin Flerin
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Fernanda Duarte
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - Matthew J Langton
- Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
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3
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Ahmad M, Gartland SA, Langton MJ. Photo- and Redox-Regulated Transmembrane Ion Transporters. Angew Chem Int Ed Engl 2023; 62:e202308842. [PMID: 37478126 DOI: 10.1002/anie.202308842] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 07/23/2023]
Abstract
Synthetic supramolecular ion transporters find applications as potential therapeutics and as tools for engineering functional membranes. Stimuli-responsive systems enable external control over transport, which is necessary for targeted activation. The Minireview provides an overview of current approaches to developing stimuli-responsive ion transport systems, including channels and mobile carriers, that can be controlled using photo or redox inputs.
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Affiliation(s)
- Manzoor Ahmad
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Shaun A Gartland
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
| | - Matthew J Langton
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford, OX1 3TA, UK
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4
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Roy NJ, Save SN, Sharma VK, Abraham B, Kuttanamkuzhi A, Sharma S, Lahiri M, Talukdar P. NAD(P)H:Quinone Acceptor Oxidoreductase 1 (NQO1) Activatable Salicylamide H + /Cl - Transporters. Chemistry 2023; 29:e202301412. [PMID: 37345998 DOI: 10.1002/chem.202301412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/10/2023] [Accepted: 06/22/2023] [Indexed: 06/23/2023]
Abstract
NAD(P)H:quinone acceptor oxidoreductase 1 (NQO1), a detoxifying enzyme overexpressed in tumors, plays a key role in protecting cancer cells against oxidative stress and thus has been considered an attractive candidate for activating prodrug(s). Herein, we report the first use of NQO1 for the selective activation of 'protransporter' systems in cancer cells leading to the induction of apoptosis. Salicylamides, easily synthesizable small molecules, have been effectively used for efficient H+ /Cl- symport across lipid membranes. The ion transport activity of salicylamides was efficiently abated by caging the OH group with NQO1 activatable quinones via either ether or ester linkage. The release of active transporters, following the reduction of quinone caged 'protransporters' by NQO1, was verified. Both the transporters and protransporters exhibited significant toxicity towards the MCF-7 breast cancer line, mediated via the induction of oxidative stress, mitochondrial membrane depolarization, and lysosomal deacidification. Induction of cell death via intrinsic apoptotic pathway was verified by monitoring PARP1 cleavage.
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Affiliation(s)
- Naveen J Roy
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Shreyada N Save
- Department of Biotechnology, Savitribai Phule Pune University (Formerly University of Pune), Pune, 411007, Maharashtra, India
| | - Virender Kumar Sharma
- Department of Biology, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Benchamin Abraham
- Department of Biology, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Abhijith Kuttanamkuzhi
- Department of Biology, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Shilpy Sharma
- Department of Biotechnology, Savitribai Phule Pune University (Formerly University of Pune), Pune, 411007, Maharashtra, India
| | - Mayurika Lahiri
- Department of Biology, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008, Maharashtra, India
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5
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Ahmad M, Roy NJ, Singh A, Mondal D, Mondal A, Vijayakanth T, Lahiri M, Talukdar P. Photocontrolled activation of doubly o-nitrobenzyl-protected small molecule benzimidazoles leads to cancer cell death. Chem Sci 2023; 14:8897-8904. [PMID: 37621434 PMCID: PMC10445434 DOI: 10.1039/d3sc01786a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 07/20/2023] [Indexed: 08/26/2023] Open
Abstract
Artificial biomimetic chloride anionophores have shown promising applications as anticancer scaffolds. Importantly, stimuli-responsive chloride transporters that can be selectively activated inside the cancer cells to avoid undesired toxicity to normal, healthy cells are very rare. Particularly, light-responsive systems promise better applicability for photodynamic therapy because of their spatiotemporal controllability, low toxicity, and high tunability. Here, in this work, we report o-nitrobenzyl-linked, benzimidazole-based singly and doubly protected photocaged protransporters 2a, 2b, 3a, and 3b, respectively, and benzimidazole-2-amine-based active transporters 1a-1d. Among the active compounds, trifluoromethyl-based anionophore 1a showed efficient ion transport activity (EC50 = 1.2 ± 0.2 μM). Detailed mechanistic studies revealed Cl-/NO3- antiport as the main ion transport process. Interestingly, double protection with photocages was found to be necessary to achieve the complete "OFF-state" that could be activated by external light. The procarriers were eventually activated inside the MCF-7 cancer cells to induce phototoxic cell death.
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Affiliation(s)
- Manzoor Ahmad
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Naveen J Roy
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Anurag Singh
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Debashis Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Abhishek Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Thangavel Vijayakanth
- The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University Tel Aviv 6997801 Israel
| | - Mayurika Lahiri
- Department of Biology, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune Dr Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
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6
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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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7
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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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8
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Yang K, Kotak HA, Haynes CJ. Metal-organic ion transport systems. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Cholesterol-stabilized membrane-active nanopores with anticancer activities. Nat Commun 2022; 13:5985. [PMID: 36216956 PMCID: PMC9551035 DOI: 10.1038/s41467-022-33639-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 09/23/2022] [Indexed: 11/22/2022] Open
Abstract
Cholesterol-enhanced pore formation is one evolutionary means cholesterol-free bacterial cells utilize to specifically target cholesterol-rich eukaryotic cells, thus escaping the toxicity these membrane-lytic pores might have brought onto themselves. Here, we present a class of artificial cholesterol-dependent nanopores, manifesting nanopore formation sensitivity, up-regulated by cholesterol of up to 50 mol% (relative to the lipid molecules). The high modularity in the amphiphilic molecular backbone enables a facile tuning of pore size and consequently channel activity. Possessing a nano-sized cavity of ~ 1.6 nm in diameter, our most active channel Ch-C1 can transport nanometer-sized molecules as large as 5(6)-carboxyfluorescein and display potent anticancer activity (IC50 = 3.8 µM) toward human hepatocellular carcinomas, with high selectivity index values of 12.5 and >130 against normal human liver and kidney cells, respectively. Bacterial cells utilize cholesterol-enhanced pore formation to specifically target eukaryotic cells. Here, the authors present a class of bio-inspired, cholesterol-enhanced nanopores which display anticancer activities in vitro.
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10
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Abstract
Both biological and artificial membrane transporters mediate passive transmembrane ion flux predominantly via either channel or carrier mechanisms, tightly regulating the transport of materials entering and exiting the cell. One early elegant example unclassifiable as carriers or channels was reported by Smith who derivatized a phospholipid molecule into an anion transporter, facilitating membrane transport via a two-station relay mechanism (Smith et al. J. Am. Chem. Soc. 2008, 130, 17274-17275). Our journey toward blurring or even breaking the boundaries defined by the carrier and channel mechanisms starts in January of 2018 when seeing a child swinging on the swing at the playground park. Since then, I have been wondering whether we could build a nanoscale-sized molecular swing able to perform the swing function at the molecular level to induce transmembrane ion flux. Such research journey culminates in several membrane-active artificial molecular machines, including molecular swings, ion fishers, ion swimmers, rotors, tetrapuses and dodecapuses that permeabilize the membrane via swinging, ion-fishing, swimming, rotating, or swing-relaying actions, respectively. Except for molecular ion swimmers, these unconventional membrane transporters in their most stable states readily span across the entire membrane in a way akin to channels. With built-in flexible arms that can swing or bend in the dynamic membrane environment, they transport ions via constantly changing ion permeation pathways that are more defined than carriers but less defined than channels. Applying the same benzo-crown ether groups as the sole ion-binding and -transporting units, these transporters however differ immensely in ion transport property. While the maximal K+ transport activity is achieved by the molecular swing also termed "motional channel" that displays an EC50 value of 0.021 mol % relative to lipid and transports K+ ions at rate 27% faster than gramicidin A, the highest K+/Na+ selectivity of 18.3 is attained by the molecular ion fisher, with the highest Na+/K+ selectivity of 13.7 by the molecular dodecapus. Having EC50 values of 0.49-1.60 mol % and K+/Na+ values of 1.1-6.3, molecular rotors and tetrapuses are found to be generally active but weakly to moderately K+-selective. For molecular ion swimmers that contain 10 to 14 carbon atom alkyl linkers, they all turn out to be highly active (EC50 = 0.18-0.41 mol %) and highly selective (RK+/RNa+ = 7.0-9.5) transporters. Of special note are crown ether-appended molecular dodecapuses that establish the C60-fullerene core as an excellent platform to allow for a direct translation of solution binding affinity to transmembrane ion transport selectivity, providing a de novo basis for rationally designing artificial ion transporters with high transport selectivity. Considering remarkable cytotoxic activities displayed by molecular swings and ion swimmers, the varied types of existing and emerging unconventional membrane transporters with enhanced activities and selectivities eventually might lead to medical benefits in the future.
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Affiliation(s)
- Jie Shen
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, China
| | - Changliang Ren
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Huaqiang Zeng
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, China
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11
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Bickerton LE, Langton MJ. Controlling transmembrane ion transport via photo-regulated carrier mobility. Chem Sci 2022; 13:9531-9536. [PMID: 36091898 PMCID: PMC9400602 DOI: 10.1039/d2sc03322d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 07/07/2022] [Indexed: 11/21/2022] Open
Abstract
Photo-gated anion transport is achieved by modulating the mobility of mobile carriers within a lipid bilayer membrane, using a photo-cleavable membrane anchor. This enables in situ, off–on activation of transport in vesicles.
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Affiliation(s)
- Laura E. Bickerton
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Matthew J. Langton
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford 12 Mansfield Road, Oxford, OX1 3TA, UK
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12
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Malla JA, Ahmad M, Talukdar P. Molecular Self-Assembly as a Tool to Construct Transmembrane Supramolecular Ion Channels. CHEM REC 2021; 22:e202100225. [PMID: 34766703 DOI: 10.1002/tcr.202100225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/16/2021] [Accepted: 10/25/2021] [Indexed: 12/12/2022]
Abstract
Self-assembly has become a powerful tool for building various supramolecular architectures with applications in material science, environmental science, and chemical biology. One such area is the development of artificial transmembrane ion channels that mimic naturally occurring channel-forming proteins to unveil various structural and functional aspects of these complex biological systems, hoping to replace the defective protein channels with these synthetically accessible moieties. This account describes our recent approaches to construct supramolecular ion channels using synthetic molecules and their applications in medicinal chemistry.
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Affiliation(s)
- Javid Ahmad Malla
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhaba Road, Pune, Maharashtra, 411008, India
| | - Manzoor Ahmad
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhaba Road, Pune, Maharashtra, 411008, India
| | - Pinaki Talukdar
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhaba Road, Pune, Maharashtra, 411008, India
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13
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Kerckhoffs A, Bo Z, Penty SE, Duarte F, Langton MJ. Red-shifted tetra- ortho-halo-azobenzenes for photo-regulated transmembrane anion transport. Org Biomol Chem 2021; 19:9058-9067. [PMID: 34617944 DOI: 10.1039/d1ob01457a] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Photo-responsive synthetic ion transporters are of interest as tools for studying transmembrane transport processes and have potential applications as targeted therapeutics, due to the possibility of spatiotemporal control and wavelength-dependent function. Here we report the synthesis of novel symmetric and non-symmetric red-shifted tetra-ortho-chloro- and tetra-ortho-fluoro azobenzenes, bearing pendant amine functionality. Functionalisation of the photo-switchable scaffolds with squaramide hydrogen bond donors enabled the preparation of a family of anion receptors, which act as photo-regulated transmembrane chloride transporters in response to green or red light. The subtle effects of chlorine/fluorine substitution, meta/para positioning of the anion receptors, and the use of more flexible linkers are explored. NMR titration experiments on the structurally diverse photo-switchable receptors reveal cooperative binding of chloride in the Z, but not E isomer, by the two squaramide binding sites. These results are supported by molecular dynamics simulations in explicit solvent and model membranes. We show that this intramolecular anion recognition leads to effective switching of transport activity in lipid bilayer membranes, in which optimal Z isomer activity is achieved using a combination of fluorine substitution and para-methylene spacer units.
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Affiliation(s)
- Aidan Kerckhoffs
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Zonghua Bo
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Samuel E Penty
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Fernanda Duarte
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Matthew J Langton
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
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14
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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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15
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Bickerton LE, Johnson TG, Kerckhoffs A, Langton MJ. Supramolecular chemistry in lipid bilayer membranes. Chem Sci 2021; 12:11252-11274. [PMID: 34567493 PMCID: PMC8409493 DOI: 10.1039/d1sc03545b] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 07/26/2021] [Indexed: 01/03/2023] Open
Abstract
Lipid bilayer membranes form compartments requisite for life. Interfacing supramolecular systems, including receptors, catalysts, signal transducers and ion transporters, enables the function of the membrane to be controlled in artificial and living cellular compartments. In this perspective, we take stock of the current state of the art of this rapidly expanding field, and discuss prospects for the future in both fundamental science and applications in biology and medicine.
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Affiliation(s)
- Laura E Bickerton
- Department of Chemistry, University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Toby G Johnson
- Department of Chemistry, University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Aidan Kerckhoffs
- Department of Chemistry, University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Matthew J Langton
- Department of Chemistry, University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
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16
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Guo Q, Liu J, Yang H, Lei Z. Synthesis of Photo, Oxidation, Reduction Triple‐Stimuli‐Responsive Interface‐Cross‐Linked Polymer Micelles as Nanocarriers for Controlled Release. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202000365] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Qiong Guo
- Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 P. R. China
| | - Jiangtao Liu
- Shaanxi University of Chinese Medicine Xianyang 712046 P. R. China
| | - Hong Yang
- Shaanxi Normal University Xi'an 710062 P. R. China
| | - Zhongli Lei
- Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 P. R. China
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17
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Chen H, Liu Y, Cheng X, Fang S, Sun Y, Yang Z, Zheng W, Ji X, Wu Z. Self‐Assembly of Size‐Controlled
m
‐Pyridine–Urea Oligomers and Their Biomimetic Chloride Ion Channels. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Hualong Chen
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
| | - Yajing Liu
- School of Pharmaceutical Science Capital Medical University Beijing 100069 China
| | - Xuebo Cheng
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
| | - Senbiao Fang
- School of Computer Science and Engineering Central South University Changsha 410012 China
| | - Yuli Sun
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
| | - Zequn Yang
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
| | - Wei Zheng
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
| | - Xunming Ji
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
- Institute of Hypoxia Medicine Xuanwu Hospital Capital Medical University Beijing 100053 China
| | - Zehui Wu
- Beijing Institute of Brain Disorders Laboratory of Brain Disorders Ministry of Science and Technology Collaborative Innovation Center for Brain Disorders Beijing Advanced Innovation Center for Big Data-based Precision Medicine Capital Medical University Beijing 100069 China
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Chen H, Liu Y, Cheng X, Fang S, Sun Y, Yang Z, Zheng W, Ji X, Wu Z. Self-Assembly of Size-Controlled m-Pyridine-Urea Oligomers and Their Biomimetic Chloride Ion Channels. Angew Chem Int Ed Engl 2021; 60:10833-10841. [PMID: 33624345 DOI: 10.1002/anie.202102174] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Indexed: 01/06/2023]
Abstract
The m-pyridine urea (mPU) oligomer was constructed by using the intramolecular hydrogen bond formed by the pyridine nitrogen atom and the NH of urea and the intermolecular hydrogen bond of the terminal carbonyl group and the NH of urea. Due to the synergistic effect of hydrogen bonds, mPU oligomer folds and exhibits strong self-assembly behaviour. Affected by folding, mPU oligomer generates a twisted plane, and one of its important features is that the carbonyl group of the urea group orientates outwards from the twisted plane, while the NHs tend to direct inward. This feature is beneficial to NH attraction for electron-rich species. Among them, the trimer self-assembles into helical nanotubes, and can efficiently transport chloride ions. This study provides a novel and efficient strategy for constructing self-assembled biomimetic materials for electron-rich species transmission.
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Affiliation(s)
- Hualong Chen
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China
| | - Yajing Liu
- School of Pharmaceutical Science, Capital Medical University, Beijing, 100069, China
| | - Xuebo Cheng
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China
| | - Senbiao Fang
- School of Computer Science and Engineering, Central South University, Changsha, 410012, China
| | - Yuli Sun
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China
| | - Zequn Yang
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China
| | - Wei Zheng
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China
| | - Xunming Ji
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China.,Institute of Hypoxia Medicine, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Zehui Wu
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Beijing Advanced Innovation Center for Big Data-based Precision Medicine, Capital Medical University, Beijing, 100069, China
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Zhang H, Ye R, Mu Y, Li T, Zeng H. Small Molecule-Based Highly Active and Selective K + Transporters with Potent Anticancer Activities. NANO LETTERS 2021; 21:1384-1391. [PMID: 33464086 DOI: 10.1021/acs.nanolett.0c04134] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We report here a novel class of cation transporters with extreme simplicity, opening a whole new dimension of scientific research for finding small molecule-based cation transporters for therapeutic applications. Comprising three modular components (a headgroup, a flexible alkyl chain-derived body, and a crown ether-derived foot for ion binding), these transporters efficiently (EC50 = 0.18-0.41 mol % relative to lipid) and selectively (K+/Na+ selectivity = 7.0-9.5) move K+ ions across the membrane. Importantly, the most active (EC50 = 0.18-0.22 mol %) and highly selective series of transporters A12, B12, and C12 concurrently possess potent anticancer activities with IC50 values as low as 4.35 ± 0.91 and 6.00 ± 0.13 μM toward HeLa and PC3 cells, respectively. Notably, a mere replacement of the 18-crown-6 unit in the structure with 12-crown-4 or 15-crown-5 units completely annihilates the cation-transporting ability.
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Affiliation(s)
- Hao Zhang
- Institute of Advanced Synthesis, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Taicang, Jiangsu 215400, China
| | - Ruijuan Ye
- Institute of Advanced Synthesis, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Taicang, Jiangsu 215400, China
| | - Yuguang Mu
- School of Biological Sciences, Nanyang Technological University, Singapore 637551
| | - Tianhu Li
- Institute of Advanced Synthesis, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Taicang, Jiangsu 215400, China
| | - Huaqiang Zeng
- Institute of Advanced Synthesis, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, China
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Taicang, Jiangsu 215400, China
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20
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Engineering of stimuli-responsive lipid-bilayer membranes using supramolecular systems. Nat Rev Chem 2020; 5:46-61. [PMID: 37118103 DOI: 10.1038/s41570-020-00233-6] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2020] [Indexed: 12/13/2022]
Abstract
The membrane proteins found in nature control many important cellular functions, including signal transduction and transmembrane ion transport, and these, in turn, are regulated by external stimuli, such as small molecules, membrane potential and light. Membrane proteins also find technological applications in fields ranging from optogenetics to synthetic biology. Synthetic supramolecular analogues have emerged as a complementary method to engineer functional membranes. This Review describes stimuli-responsive supramolecular systems developed for the control of ion transport, signal transduction and catalysis in lipid-bilayer-membrane systems. Recent advances towards achieving spatio-temporal control over activity in artificial and living cells are highlighted. Current challenges, the scope, limitations and future potential to exploit supramolecular systems for engineering stimuli-responsive lipid-bilayer membranes are discussed.
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21
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Malla JA, Sharma VK, Lahiri M, Talukdar P. Esterase‐Activatable Synthetic M
+
/Cl
−
Channel Induces Apoptosis and Disrupts Autophagy in Cancer Cells. Chemistry 2020; 26:11946-11949. [DOI: 10.1002/chem.202002964] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Indexed: 01/25/2023]
Affiliation(s)
- Javid Ahmad Malla
- Department of ChemistryIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road Pashan Pune 411008 Maharashtra India
| | - Virender Kumar Sharma
- Department of BiologyIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Mayurika Lahiri
- Department of BiologyIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Department of ChemistryIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road Pashan Pune 411008 Maharashtra India
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22
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Kerckhoffs A, Langton MJ. Reversible photo-control over transmembrane anion transport using visible-light responsive supramolecular carriers. Chem Sci 2020; 11:6325-6331. [PMID: 32953027 PMCID: PMC7472928 DOI: 10.1039/d0sc02745f] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 06/04/2020] [Indexed: 12/15/2022] Open
Abstract
Supramolecular anion carriers responsive to visible light enable reversible two-colour photo-control over transmembrane anion transport.
Ion transport across lipid bilayer membranes in biology is controlled by membrane proteins, which in turn are regulated in response to chemical-, physical- and photo-stimuli. The design of synthetic supramolecular ion transporters able to be precisely controlled by external signals, in particular bio-compatible wavelengths of visible light, is key for achieving spatio-temporal control over function. Here we report two-colour responsive molecular photo-switches that act as supramolecular transmembrane anion carriers. Reversible switching of the photo-switch within the lipid bilayer membrane is achieved using biocompatible visible wavelengths of light, such that temporal control over transmembrane anion transport is achieved through alternating irradiation with red and blue light.
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Affiliation(s)
- Aidan Kerckhoffs
- Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford , OX1 3TA , UK .
| | - Matthew J Langton
- Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford , OX1 3TA , UK .
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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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Yu XH, Hong XQ, Mao QC, Chen WH. Biological effects and activity optimization of small-molecule, drug-like synthetic anion transporters. Eur J Med Chem 2019; 184:111782. [DOI: 10.1016/j.ejmech.2019.111782] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 10/08/2019] [Accepted: 10/09/2019] [Indexed: 12/27/2022]
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Wu X, Small JR, Cataldo A, Withecombe AM, Turner P, Gale PA. Voltage‐Switchable HCl Transport Enabled by Lipid Headgroup–Transporter Interactions. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907466] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xin Wu
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
| | - Jennifer R. Small
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
- Chemistry University of Southampton Southampton SO17 1BJ UK
| | - Alessio Cataldo
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Ø Denmark
| | - Anne M. Withecombe
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
| | - Peter Turner
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
| | - Philip A. Gale
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
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Wu X, Small JR, Cataldo A, Withecombe AM, Turner P, Gale PA. Voltage‐Switchable HCl Transport Enabled by Lipid Headgroup–Transporter Interactions. Angew Chem Int Ed Engl 2019; 58:15142-15147. [DOI: 10.1002/anie.201907466] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 07/20/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Xin Wu
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
| | - Jennifer R. Small
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
- Chemistry University of Southampton Southampton SO17 1BJ UK
| | - Alessio Cataldo
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
- Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Ø Denmark
| | - Anne M. Withecombe
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
| | - Peter Turner
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
| | - Philip A. Gale
- School of Chemistry The University of Sydney Sydney New South Wales 2006 Australia
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28
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Howe ENW, Gale PA. Fatty Acid Fueled Transmembrane Chloride Transport. J Am Chem Soc 2019; 141:10654-10660. [DOI: 10.1021/jacs.9b02116] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Ethan N. W. Howe
- School of Chemistry, The University of Sydney, Sydney NSW 2006, Australia
| | - Philip A. Gale
- School of Chemistry, The University of Sydney, Sydney NSW 2006, Australia
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Salunke SB, Malla JA, Talukdar P. Phototriggered Release of a Transmembrane Chloride Carrier from an
o
‐Nitrobenzyl‐Linked Procarrier. Angew Chem Int Ed Engl 2019; 58:5354-5358. [DOI: 10.1002/anie.201900869] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Swati Bansi Salunke
- Chemistry DepartmentIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Javid Ahmad Malla
- Chemistry DepartmentIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Chemistry DepartmentIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
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30
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Li Y, Du L, Wu C, Yu B, Zhang H, An F. Peptide Sequence-Dominated Enzyme-Responsive Nanoplatform for Anticancer Drug Delivery. Curr Top Med Chem 2019; 19:74-97. [PMID: 30686257 DOI: 10.2174/1568026619666190125144621] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 11/06/2018] [Accepted: 11/23/2018] [Indexed: 02/08/2023]
Abstract
Enzymatic dysregulation in tumor and intracellular microenvironments has made this property
a tremendously promising responsive element for efficient diagnostics, carrier targeting, and drug
release. When combined with nanotechnology, enzyme-responsive drug delivery systems (DDSs) have
achieved substantial advancements. In the first part of this tutorial review, changes in tumor and intracellular
microenvironmental factors, particularly the enzymatic index, are described. Subsequently, the
peptide sequences of various enzyme-triggered nanomaterials are summarized for their uses in various
drug delivery applications. Then, some other enzyme responsive nanostructures are discussed. Finally,
the future opportunities and challenges are discussed. In brief, this review can provide inspiration and
impetus for exploiting more promising internal enzyme stimuli-responsive nanoDDSs for targeted tumor
diagnosis and treatment.
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Affiliation(s)
- Yanan Li
- First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Liping Du
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Science, Health Science Center, Xi’an Jiaotong University, No.76 Yanta West Road, Xi'an, Shaanxi 710061, China
| | - Chunsheng Wu
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Science, Health Science Center, Xi’an Jiaotong University, No.76 Yanta West Road, Xi'an, Shaanxi 710061, China
| | - Bin Yu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Hui Zhang
- First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Feifei An
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Science, Health Science Center, Xi’an Jiaotong University, No.76 Yanta West Road, Xi'an, Shaanxi 710061, China
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31
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Salunke SB, Malla JA, Talukdar P. Phototriggered Release of a Transmembrane Chloride Carrier from an
o
‐Nitrobenzyl‐Linked Procarrier. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900869] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Swati Bansi Salunke
- Chemistry DepartmentIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Javid Ahmad Malla
- Chemistry DepartmentIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
| | - Pinaki Talukdar
- Chemistry DepartmentIndian Institute of Science Education and Research Pune Dr. Homi Bhabha Road, Pashan Pune 411008 Maharashtra India
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Albinali KE, Zagho MM, Deng Y, Elzatahry AA. A perspective on magnetic core-shell carriers for responsive and targeted drug delivery systems. Int J Nanomedicine 2019; 14:1707-1723. [PMID: 30880975 PMCID: PMC6408922 DOI: 10.2147/ijn.s193981] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Magnetic core-shell nanocarriers have been attracting growing interest owing to their physicochemical and structural properties. The main principles of magnetic nanoparticles (MNPs) are localized treatment and stability under the effect of external magnetic fields. Furthermore, these MNPs can be coated or functionalized to gain a responsive property to a specific trigger, such as pH, heat, or even enzymes. Current investigations have been focused on the employment of this concept in cancer therapies. The evaluation of magnetic core-shell materials includes their magnetization properties, toxicity, and efficacy in drug uptake and release. This review discusses some categories of magnetic core-shell drug carriers based on Fe2O3 and Fe3O4 as the core, and different shells such as poly(lactic-co-glycolic acid), poly(vinylpyrrolidone), chitosan, silica, calcium silicate, metal, and lipids. In addition, the review addresses their recent potential applications for cancer treatment.
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Affiliation(s)
- Kholoud E Albinali
- Materials Science and Technology Program, College of Arts and Sciences, Qatar University, Doha, Qatar,
| | - Moustafa M Zagho
- Materials Science and Technology Program, College of Arts and Sciences, Qatar University, Doha, Qatar,
| | - Yonghui Deng
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, iChEM, Fudan University, Shanghai, People's Republic of China
| | - Ahmed A Elzatahry
- Materials Science and Technology Program, College of Arts and Sciences, Qatar University, Doha, Qatar,
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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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Li E, Yang Y, Hao G, Yi X, Zhang S, Pan Y, Xing B, Gao M. Multifunctional Magnetic Mesoporous Silica Nanoagents for in vivo Enzyme-Responsive Drug Delivery and MR Imaging. Nanotheranostics 2018; 2:233-242. [PMID: 29868348 PMCID: PMC5984286 DOI: 10.7150/ntno.25565] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Accepted: 05/11/2018] [Indexed: 12/12/2022] Open
Abstract
In this study, we report novel multifunctional nanoagents for in vivo enzyme-responsive anticancer drug delivery and magnetic resonance imaging (MRI), based on mesoporous silica coated iron oxide nanoparticles (Fe3O4@MSNs). The anticancer drug, DOX, was encapsulated in the porous cavities with a MMP-2 enzyme responsive peptide being covalently linked to the nanoparticles surface. The in vitro experiment results indicated that the enzyme responsive nanoagents own high specificity for controlled drug release in the cell line with high MMP-2 expression. Furthermore, the targeted delivery of the nanoagents to the tumor site purpose has been successfully achieved through magnet-guided nanocarrier accumulation by utilizing the magnetic properties of the Fe3O4 nanocores, which resulted in efficient inhibition of the tumor growth. Additionally, these novel nanoagents can also be used as MRI agent for the real-time diagnosis the tumor treatment process of living animals. Taking the advantages of high specificity, controllable drug release and real-time MRI imaging, we believe these multifunctional nanoagents could also be used as a general platform for the design of stimulus-responsive multifunctional nanomaterials for the aim of accurate diagnosis and efficient treatment of other diseases.
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Affiliation(s)
- Erdong Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
| | - Yanmei Yang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Biomedical Sciences, Shandong Normal University, Jinan 250014, China
| | - Guangyu Hao
- Imaging Center, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xuan Yi
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
| | - Shaohua Zhang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
| | - Yue Pan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Bengang Xing
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Mingyuan Gao
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China
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Yang YD, Sessler JL, Gong HY. Flexible imidazolium macrocycles: building blocks for anion-induced self-assembly. Chem Commun (Camb) 2018; 53:9684-9696. [PMID: 28766599 DOI: 10.1039/c7cc04661h] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This feature article summarises recent contributions of the authors in the area of anion-induced supramolecular self-assembly. It is based on the chemistry of a set of tetracationic imidazolium macrocycles, specifically the so-called 'Texas-sized' molecular box, cyclo[2](2,6-di(1H-imidazol-1-yl)pyridine)[2](1,4-dimethylenebenzene) (14+), and its congeners, cyclo[2](2,6-di(1H-imidazol-1-yl)pyridine)[2](1,2-dimethylenebenzene) (24+), cyclo[2](2,6-di(1H-imidazol-1-yl)pyridine)[2](1,3-dimethylenebenzene) (34+), and cyclo[2](2,6-di(1H-imidazol-1-yl)pyridine)[2](2,6-dimethylenepyridine) (44+). These systems collectively have been demonstrated as being versatile building blocks that interact with organic carboxylate or sulfonate anions, as well as substrates (e.g., neutral molecules or metal cations). Most work to date has been carried out with 14+, a system that has been found to support the construction of a number of stimuli responsive self-assembled ensembles. This macrocycle and others of the 'Texas-sized' box family also show the potential to react as carbene precursors and to undergo post-synthetic modification (PSM) to produce new functional macrocycles, such as trans- and cis-cyclo[2]((Z)-N-(2-((6-(1H-imidazol-1-yl)pyridin-2-yl)amino)vinyl)formamide)[2](1,4-bismethylbenzene) (52+ and 62+, respectively). On the basis of the work reviewed in this Feature article, we propose that the imidazolium macrocycles 14+-44+ can be considered as useful tools for the construction of ensembles with environmentally responsive features, including control over self-assembly and an ability to undergo precursor-specific PSM.
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Affiliation(s)
- Yu-Dong Yang
- College of Chemistry, Beijing Normal University, Xinjiekouwaidajie 19, Beijing, 100875, P. R. China.
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Hernando E, Capurro V, Cossu C, Fiore M, García-Valverde M, Soto-Cerrato V, Pérez-Tomás R, Moran O, Zegarra-Moran O, Quesada R. Small molecule anionophores promote transmembrane anion permeation matching CFTR activity. Sci Rep 2018; 8:2608. [PMID: 29422673 PMCID: PMC5805763 DOI: 10.1038/s41598-018-20708-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 01/22/2018] [Indexed: 12/30/2022] Open
Abstract
Anion selective ionophores, anionophores, are small molecules capable of facilitating the transmembrane transport of anions. Inspired in the structure of natural product prodigiosin, four novel anionophores 1a-d, including a 1,2,3-triazole group, were prepared. These compounds proved highly efficient anion exchangers in model phospholipid liposomes. The changes in the hydrogen bond cleft modified the anion transport selectivity exhibited by these compounds compared to prodigiosin and suppressed the characteristic high toxicity of the natural product. Their activity as anionophores in living cells was studied and chloride efflux and iodine influx from living cells mediated by these derivatives was demonstrated. These compounds were shown to permeabilize cellular membranes to halides with efficiencies close to the natural anion channel CFTR at doses that do not compromise cellular viability. Remarkably, optimal transport efficiency was measured in the presence of pH gradients mimicking those found in the airway epithelia of Cystic Fibrosis patients. These results support the viability of developing small molecule anionophores as anion channel protein surrogates with potential applications in the treatment of conditions such as Cystic Fibrosis derived from the malfunction of natural anion transport mechanisms.
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Affiliation(s)
- Elsa Hernando
- Departamento de Química, Universidad de Burgos, 09001, Burgos, Spain
| | - Valeria Capurro
- U.O.C. Genetica Medica, Instituto Giannina Gaslini, Genoa, Italy
| | | | | | | | - Vanessa Soto-Cerrato
- Cancer Cell Biology Research Group, Department of Pathology and Experimental Therapeutics, Faculty of Medicine, University of Barcelona, Barcelona, Spain
| | - Ricardo Pérez-Tomás
- Cancer Cell Biology Research Group, Department of Pathology and Experimental Therapeutics, Faculty of Medicine, University of Barcelona, Barcelona, Spain
| | | | | | - Roberto Quesada
- Departamento de Química, Universidad de Burgos, 09001, Burgos, Spain.
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