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Bellavita R, Leone L, Maione A, Falcigno L, D'Auria G, Merlino F, Grieco P, Nastri F, Galdiero E, Lombardi A, Galdiero S, Falanga A. Synthesis of temporin L hydroxamate-based peptides and evaluation of their coordination properties with iron(III ). Dalton Trans 2023; 52:3954-3963. [PMID: 36744636 DOI: 10.1039/d2dt04099a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Ferric iron is an essential nutrient for bacterial growth. Pathogenic bacteria synthesize iron-chelating entities known as siderophores to sequestrate ferric iron from host organisms in order to colonize and replicate. The development of antimicrobial peptides (AMPs) conjugated to iron chelators represents a promising strategy for reducing the iron availability, inducing bacterial death, and enhancing simultaneously the efficacy of AMPs. Here we designed, synthesized, and characterized three hydroxamate-based peptides Pep-cyc1, Pep-cyc2, and Pep-cyc3, derived from a cyclic temporin L peptide (Pep-cyc) developed previously by some of us. The Fe3+ complex formation of each ligand was characterized by UV-visible spectroscopy, mass spectrometry, and IR and NMR spectroscopies. In addition, the effect of Fe3+ on the stabilization of the α-helix conformation of hydroxamate-based peptides and the cotton effect were examined by CD spectroscopy. Moreover, the antimicrobial results obtained in vitro on some Gram-negative strains (K. pneumoniae and E. coli) showed the ability of each peptide to chelate efficaciously Fe3+ obtaining a reduction of MIC values in comparison to their parent peptide Pep-cyc. Our results demonstrated that siderophore conjugation could increase the efficacy and selectivity of AMPs used for the treatment of infectious diseases caused by Gram-negative pathogens.
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Affiliation(s)
- Rosa Bellavita
- Department of Pharmacy, University of Naples "Federico II", Via Domenico Montesano 49, 80138 Naples, Italy.
| | - Linda Leone
- Department of Chemical Sciences, University of Napoli "Federico II", Napoli, Italy
| | - Angela Maione
- Department of Biology, University of Naples Federico II, Via Cinthia, 80126 Naples, Italy
| | - Lucia Falcigno
- Department of Pharmacy, University of Naples "Federico II", Via Domenico Montesano 49, 80138 Naples, Italy.
| | - Gabriella D'Auria
- Department of Pharmacy, University of Naples "Federico II", Via Domenico Montesano 49, 80138 Naples, Italy.
| | - Francesco Merlino
- Department of Pharmacy, University of Naples "Federico II", Via Domenico Montesano 49, 80138 Naples, Italy.
| | - Paolo Grieco
- Department of Pharmacy, University of Naples "Federico II", Via Domenico Montesano 49, 80138 Naples, Italy.
| | - Flavia Nastri
- Department of Chemical Sciences, University of Napoli "Federico II", Napoli, Italy
| | - Emilia Galdiero
- Department of Biology, University of Naples Federico II, Via Cinthia, 80126 Naples, Italy
| | - Angela Lombardi
- Department of Chemical Sciences, University of Napoli "Federico II", Napoli, Italy
| | - Stefania Galdiero
- Department of Pharmacy, University of Naples "Federico II", Via Domenico Montesano 49, 80138 Naples, Italy.
| | - Annarita Falanga
- Department of Agricultural Sciences, University of Naples "Federico II", via Università 100, 80055, Portici, Italy.
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Wester A, Hansen AM, Hansen PR, Franzyk H. Perfluoro-tert-butanol for selective on-resin detritylation: a mild alternative to traditionally used methods. Amino Acids 2021; 53:1455-1466. [PMID: 34410506 DOI: 10.1007/s00726-021-03059-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 08/01/2021] [Indexed: 10/20/2022]
Abstract
Solid-phase synthesis of cyclic, branched or side-chain-modified peptides typically involves introduction of a residue carrying a temporary side-chain protecting group that undergoes selective on-resin removal. In particular, Nα-Fmoc-Nε-(4-methyltriphenylmethyl) (Mtt)-protected lysine and its shorter analogues are commercially available and extensively used in this context. Nevertheless, rapid reliable methods for on-resin removal of Mtt groups in the presence of tert-butyloxycarbonyl (Boc) groups are needed. Current commonly used conditions involve low concentrations (1-3%) of trifluoroacetic acid (TFA) in dichloromethane, albeit adjustment to each specific application is required to avoid premature removal of Boc groups or cleavage from the linker. Hence, a head-to-head comparison of several deprotection conditions was performed. The selected acids represent a wide range of acidity from TFA to trifluoroethanol. Also, on-resin removal of the N-(4-methoxytriphenylmethyl) (Mmt) and O-trityl groups (on serine) was investigated under similar conditions. The mildest conditions identified for Mtt deprotection involve successive treatments with 30% hexafluoroisopropanol (HFIP) or 30% perfluoro-tert-butanol [(CF3)3COH] in dichloromethane (3 × 5 or 3 × 15 min, respectively), while 30% HFIP, 30% (CF3)3COH, or 10% AcOH-20% trifluoroethanol (TFE) in CH2Cl2 (3 × 5 min) as well as 5% trichloroacetic acid in CH2Cl2 (3 × 2 min) enabled Mmt removal. Treatment with 1% TFA with/without 2% triisopropylsilane added (3 × 5 min), but also prolonged treatment with 30% (CF3)3COH (5 × 15 min), led to selective deprotection of an O-Trt group on a serine residue. In all cases, the sequences also contained N-Boc or O-tBu protecting groups, which were not affected by 30% HFIP or 30% (CF3)3COH even after a prolonged reaction time of 4 h. Finally, the optimized conditions involving HFIP or (CF3)3COH proved applicable also for selective deprotection of a longer resin-bound peptide [i.e., Ac-Gly-Leu-Leu-Lys(Mtt)-Arg(Pbf)-Ile-Lys(Boc)-Ser(tBu)-Leu-Leu-RAM-PS] as well as allowed for an almost complete deprotection of a Dab(Mtt) residue.
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Affiliation(s)
- Anita Wester
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 162, 2100, Copenhagen, Denmark
| | - Anna Mette Hansen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 162, 2100, Copenhagen, Denmark
| | - Paul R Hansen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 162, 2100, Copenhagen, Denmark
| | - Henrik Franzyk
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 162, 2100, Copenhagen, Denmark.
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Kuroki K, Sakai T, Masuda T, Kawano K, Futaki S. Membrane anchoring of a curvature-inducing peptide, EpN18, promotes membrane translocation of octaarginine. Bioorg Med Chem Lett 2021; 43:128103. [PMID: 33984474 DOI: 10.1016/j.bmcl.2021.128103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/29/2021] [Accepted: 05/05/2021] [Indexed: 11/25/2022]
Abstract
EpN18 is a curvature-inducing peptide, which loosens lipid packing upon interaction with the cell membrane, and facilitates cell-membrane penetration by arginine-rich cell-penetrating peptides, including octaarginine (R8). In the present study, we conjugated the N-terminal of EpN18 with a pyrenebutyryl (pBu) moiety, which acts as an anchoring unit that increases membrane interactions. Enhanced lipid-packing loosening and cytosolic translocation of R8 were observed by the pBu anchoring of EpN18.
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Affiliation(s)
- Kakeru Kuroki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Takayuki Sakai
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Toshihiro Masuda
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Kenichi Kawano
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Shiroh Futaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
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4
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5
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Kawaguchi Y, Ise S, Azuma Y, Takeuchi T, Kawano K, Le TK, Ohkanda J, Futaki S. Dipicolylamine/Metal Complexes that Promote Direct Cell-Membrane Penetration of Octaarginine. Bioconjug Chem 2018; 30:454-460. [DOI: 10.1021/acs.bioconjchem.8b00691] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshimasa Kawaguchi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Shoko Ise
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Yusuke Azuma
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Toshihide Takeuchi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Kenichi Kawano
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Toan Khanh Le
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Junko Ohkanda
- Institute of Agriculture, Shinshu University, Nagano 399-4598, Japan
| | - Shiroh Futaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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6
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Boga S, Bouzada D, García Peña D, Vázquez López M, Vázquez ME. Sequence-Specific DNA Recognition with Designed Peptides. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700988] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sonia Boga
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
| | - David Bouzada
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
| | - Diego García Peña
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
| | - Miguel Vázquez López
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Inorgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
| | - M. Eugenio Vázquez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
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7
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Oku A, Imanishi M, Noshiro D, Murayama T, Takeuchi T, Nakase I, Futaki S. Calmodulin EF-hand peptides as Ca 2+ -switchable recognition tags. Biopolymers 2016; 108. [PMID: 27554421 DOI: 10.1002/bip.22937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 08/05/2016] [Accepted: 08/21/2016] [Indexed: 11/08/2022]
Abstract
Calmodulin is a representative calcium-binding protein comprised of four Ca2+ -binding motifs with a helix-loop-helix structure (EF-hands). In this study, we clarified the potential of peptide segments derived from the third and fourth EF-hands (EF3 and EF4) to act as recognition tags. Through an analysis of the mode of disulfide formation among cysteines inserted at the N- or C-terminus of these peptide segments, EF3 and EF4 peptides were suggested to form a heterodimer with a topology similar to that in the wild-type protein. Heterodimer formation was shown to be a function of the Ca2+ concentration, suggesting that these structures may be used as Ca2+ -switchable recognition tags. An example of an "EF-tag" system involving the membrane fusion of liposomes decorated with EF3 and EF4 peptides is presented. © 2016 Wiley Periodicals, Inc. Biopolymers (Pept Sci), 2016.
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Affiliation(s)
- Akihiko Oku
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan
| | - Miki Imanishi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan
| | - Daisuke Noshiro
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan
| | - Tomo Murayama
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan
| | - Toshihide Takeuchi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan
| | - Ikuhiko Nakase
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan.,Nanoscience and Nanotechnology Research Center, Research Organization for the 21st Century, Osaka Prefecture University, Naka-ku, Sakai, Osaka, 599-8570, Japan
| | - Shiroh Futaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan
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8
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Rodríguez J, Mosquera J, Vázquez ME, Mascareñas JL. Nickel-Promoted Recognition of Long DNA Sites by Designed Peptide Derivatives. Chemistry 2016; 22:13474-7. [DOI: 10.1002/chem.201602783] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Jéssica Rodríguez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS); Departamento de Química Orgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
| | - Jesús Mosquera
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS); Departamento de Química Orgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
| | - M. Eugenio Vázquez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS); Departamento de Química Orgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
| | - José L. Mascareñas
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS); Departamento de Química Orgánica; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
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9
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Sánchez MI, Mosquera J, Vázquez ME, Mascareñas JL. Reversible Supramolecular Assembly at Specific DNA Sites: Nickel-Promoted Bivalent DNA Binding with Designed Peptide and Bipyridyl-Bis(benzamidine) Components. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405726] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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10
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Sánchez MI, Mosquera J, Vázquez ME, Mascareñas JL. Reversible Supramolecular Assembly at Specific DNA Sites: Nickel-Promoted Bivalent DNA Binding with Designed Peptide and Bipyridyl-Bis(benzamidine) Components. Angew Chem Int Ed Engl 2014; 53:9917-21. [DOI: 10.1002/anie.201405726] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Indexed: 01/20/2023]
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11
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Oheix E, Peacock AFA. Metal-ion-regulated miniature DNA-binding proteins based on GCN4 and non-native regulation sites. Chemistry 2014; 20:2829-39. [PMID: 24478111 DOI: 10.1002/chem.201303747] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Indexed: 02/06/2023]
Abstract
The design of artificial peptide dimers containing polypyridine switching domains, for which metal-ion coordination is shown to regulate DNA binding, is reported. Short peptides, based on the basic domain of the GCN4 transcription factor (GCN4bd), dimerised with either 2,2'-bipyridine (bipy(GCN4bd)2 ) or 2,2':6',2''-terpyridine (terpy(GCN4bd)2 ) linker units, undergo a conformational rearrangement on Cu(II) and Zn(II) coordination. Depending on the linker substitution pattern, this is proposed to alter the relative alignment of the two peptide moieties, and in turn regulate DNA binding. Circular dichroism and UV-visible spectroscopy reveal that Cu(II) and Zn(II) coordination promotes binding to DNA containing the CRE target site, but to a differing and opposite degree for the two linkers, and that the metal-ion affinity for terpy(GCN4bd)2 is enhanced in the presence of CRE DNA. Binding to DNA containing the shorter AP1 target site, which lacks a single nucleobase pair compared to CRE, as well as half-CRE, which contains only half of the CRE target site, was also investigated. Cu(II) and Zn(II) coordination to terpy(GCN4bd)2 promotes binding to AP1 DNA, and to a lesser extent half-CRE DNA. Whereas, bipy(GCN4bd)2 , for which interpeptide distances are largely independent of metal-ion coordination and less suitable for binding to these shorter sites, displays allosteric ineffective behaviour in these cases. These findings for the first time demonstrate that biomolecular recognition, and specifically sequence-selective DNA binding, can be controlled by metal-ion coordination to designed switching units, non-native regulation sites, in artificial biomolecules. We believe that in the future these could find a wide range of applications in biotechnology.
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Affiliation(s)
- Emmanuel Oheix
- School of Chemistry, University of Birmingham, Edgbaston, B15 2TT (UK)
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Mosquera J, Sánchez MI, Vázquez ME, Mascareñas JL. Ruthenium bipyridyl complexes as photocleavable dimerizers: deactivation of DNA-binding peptides using visible light. Chem Commun (Camb) 2014; 50:10975-8. [DOI: 10.1039/c4cc04512b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Turning off DNA binding by visible light.
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Affiliation(s)
- Jesús Mosquera
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica
- Campus Vida
- Universidade de Santiago de Compostela
- , Spain
| | - Mateo I. Sánchez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica
- Campus Vida
- Universidade de Santiago de Compostela
- , Spain
| | - M. Eugenio Vázquez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica
- Campus Vida
- Universidade de Santiago de Compostela
- , Spain
| | - José L. Mascareñas
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica
- Campus Vida
- Universidade de Santiago de Compostela
- , Spain
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13
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Futaki S, Noshiro D, Kiwada T, Asami K. Extramembrane control of ion channel peptide assemblies, using alamethicin as an example. Acc Chem Res 2013; 46:2924-33. [PMID: 23680081 DOI: 10.1021/ar400051f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ion channels allow the influx and efflux of specific ions through a plasma membrane. Many ion channels can sense, for example, the membrane potential (the voltage gaps between the inside and the outside of the membrane), specific ligands such as neurotransmitters, and mechanical tension within the membrane. They modulate cell function in response to these stimuli. Researchers have focused on developing peptide- and non-peptide-based model systems to elucidate ion-channel protein functions and to create artificial sensing systems. In this Account, we employed a typical peptide that forms ion channels,alamethicin, as a model to evaluate our methodologies for controlling the assembly states of channel-forming molecules in membranes. As alamethicin self-assembles in membranes, it prompts channel formation, but number of peptide molecules in these channels is not constant. Using planar-lipid bilayer methods, we monitored the association states of alamethicin in real time. Many ligand-gated, natural-ion channel proteins have large extramembrane domains. As these proteins interact with specific ligands, those conformational alterations in the extramembrane domains are transmitted to the transmembrane, pore-forming domains to open and close the channels. We hypothesized that if we conjugated suitable extramembrane segments to alamethicin, ligand binding to the extramembrane segments could alter the structure of the extramembrane domains and influence the association states or association numbers of alamethicin in the membranes. We could then assess those changes by using single-channel current recording. We found that we could modulate channel assembly and eventual ion flux with attached leucine-zipper extramembrane peptide segments. Using conformationally switchable leucine-zipper extramembrane segments that respond to Fe(3+), we fabricated an artificial Fe(3+)-sensitive ion channel; a decrease in the helical content of the extramembrane segment led to an increase in the channel current. When we added a calmodulin C-terminus segment, we formed a channel that was sensitive to Ca(2+). This result demonstrated that we could prepare artificial channels that were sensitive to specific ligands by adding appropriate extramembrane segments from natural protein motifs that respond to external stimuli. In conclusion, our research points to the possibility of creating tailored sensor or signal transduction systems through the conjugation of a conformationally switchable extramembrane peptide/protein segment to a suitable transmembrane peptide segment.
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Affiliation(s)
- Shiroh Futaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Daisuke Noshiro
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Tatsuto Kiwada
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical, and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Koji Asami
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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14
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Xie M, Li H, Ye M, Zhang Y, Hu J. Peptide Self-Assembly on Mica under Ethanol-Containing Atmospheres: Effects of Ethanol on Epitaxial Growth of Peptide Nanofilaments. J Phys Chem B 2012; 116:2927-33. [DOI: 10.1021/jp2089438] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Muyun Xie
- Shanghai Institute of Applied
Physics, Chinese Academy of Sciences
- Graduate School of the Chinese Academy of Sciences
| | - Hai Li
- Shanghai Institute of Applied
Physics, Chinese Academy of Sciences
| | - Ming Ye
- Shanghai Institute of Applied
Physics, Chinese Academy of Sciences
| | - Yi Zhang
- Shanghai Institute of Applied
Physics, Chinese Academy of Sciences
| | - Jun Hu
- Shanghai Institute of Applied
Physics, Chinese Academy of Sciences
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15
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Azuma Y, Imai H, Yoshimura T, Kawabata T, Imanishi M, Futaki S. Dipicolylamine as a unique structural switching element for helical peptides. Org Biomol Chem 2012; 10:6062-8. [DOI: 10.1039/c2ob07118e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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16
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Araki D, Takayama K, Inoue M, Watanabe T, Kumon H, Futaki S, Matsui H, Tomizawa K. Cell-penetrating D-isomer peptides of p53 C-terminus: long-term inhibitory effect on the growth of bladder cancer. Urology 2009; 75:813-9. [PMID: 19963248 DOI: 10.1016/j.urology.2009.10.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2009] [Revised: 08/24/2009] [Accepted: 10/04/2009] [Indexed: 11/15/2022]
Abstract
OBJECTIVES To investigate whether a single application of the membrane-permeable D-isomer of the p53 C-terminus connected with a retro-inverso version of the NH(2)-terminal 20-amino acid peptide of the influenza virus hemagglutinin-2 protein (riHA2) inhibited the growth of bladder cancer cells. The transduction of p53 using poly-arginine is useful for targeting and suppressing the growth of bladder cancer cells. However, the protein's intracellular half-life is short, and repeated application is necessary to achieve an anti-tumor effect. METHODS The p53 carboxyl-terminal peptides covalently coupled with cell-penetrating peptides were synthesized with D- or L-amino acids. Moreover, the peptides were connected with riHA2 by a disulfide bridge. Human bladder cancer cell lines were incubated with each peptide and cell viability was assessed with the WST assay. Apoptotic cells were confirmed by Hoechst and active capase-3 staining. The p53 peptides were injected into severe combined immunodeficiency disease mice transplanted with J82 cells to investigate their anti-tumor effect on bladder tumors. A survival curve was plotted using the Kaplan-Meier method. RESULTS A single application of cell-penetrating D-isomer peptides of the p53 C-terminus connected with riHA2 (d11R-p53C'-riHA2 and dFHV-p53C'-riHA2) inhibited the growth and induced the apoptosis of bladder cancer cells. The tumor-bearing mice treated only with vehicle had a mean survival time of 12 days, whereas treatment with d11R-p53C'-riHA2 resulted in a long-term survival rate of 50%. CONCLUSIONS Peptide transduction therapy using the D-isomer p53 C-terminal peptide with riHA2 may be an innovative method for the treatment of bladder cancer.
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Affiliation(s)
- Daiji Araki
- Department of Physiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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17
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Azuma Y, Imanishi M, Yoshimura T, Kawabata T, Futaki S. Cobalt(II)-responsive DNA binding of a GCN4-bZIP protein containing cysteine residues functionalized with iminodiacetic acid. Angew Chem Int Ed Engl 2009; 48:6853-6. [PMID: 19655361 DOI: 10.1002/anie.200902888] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yusuke Azuma
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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18
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Azuma Y, Imanishi M, Yoshimura T, Kawabata T, Futaki S. Cobalt(II)-Responsive DNA Binding of a GCN4-bZIP Protein Containing Cysteine Residues Functionalized with Iminodiacetic Acid. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200902888] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Pagel K, Koksch B. Following polypeptide folding and assembly with conformational switches. Curr Opin Chem Biol 2008; 12:730-9. [DOI: 10.1016/j.cbpa.2008.09.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2008] [Revised: 08/29/2008] [Accepted: 09/07/2008] [Indexed: 10/21/2022]
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20
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21
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Ghosh PS, Han G, Erdogan B, Rosado O, Rotello VM. Binding of nanoparticle receptors to peptide α-helices using amino acid-functionalized nanoparticles. J Pept Sci 2008; 14:134-8. [DOI: 10.1002/psc.947] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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22
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Kiwada T, Sonomura K, Sugiura Y, Asami K, Futaki S. Transmission of extramembrane conformational change into current: construction of metal-gated ion channel. J Am Chem Soc 2007; 128:6010-1. [PMID: 16669650 DOI: 10.1021/ja060515b] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Interaction with Fe(III) induces the reversible conformational switch of the extramembrane segment in the artificial receptor channel, which is transmitted into membranes as an increase in channel current (ion flux).
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Affiliation(s)
- Tatsuto Kiwada
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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23
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Futaki S, Asami K. Ligand-induced extramembrane conformation switch controlling alamethicin assembly and the channel current. Chem Biodivers 2007; 4:1313-22. [PMID: 17589883 DOI: 10.1002/cbdv.200790112] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In this review, we describe our approach to creating artificial receptor-channel proteins or sensor systems, using an extramembrane segment conformationally switchable by external stimuli. Alamethicin is known to self-assemble in membranes to form ion channels with various open states. Employment of an alpha-helical leucine-zipper segment resulted in the effective modulation of the association states of alamethicin to produce a single predominant channel-open state. A decrease in the helical content of the extramembrane segments was found to induce a channel-current increase. Therefore, conformational changes in the extramembrane segments induced by the interaction with ligands can be reflected in the current levels.
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Affiliation(s)
- Shiroh Futaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, Japan.
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24
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Kimura T, Ninomiya K, Futaki S. NMR investigation of the electrostatic effect in binding of a neuropeptide, achatin-I, to phosphatidylcholine bilayers. J Phys Chem B 2007; 111:3831-8. [PMID: 17388516 DOI: 10.1021/jp067100x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Achatin-I (Gly1-d-Phe2-Ala3-Asp4), known as a neuropeptide containing a d-amino acid, binds to the surface of a zwitterionic phosphatidylcholine (PC) membrane only when the peptide N-terminal amino group is in the ionized state, NH3+ (Kimura, T.; Okamura, E.; Matubayasi, N.; Asami, K.; Nakahara, M. Biophys. J. 2004, 87, 375-385). To gain mechanistic insights into how the binding equilibrium is delicately controlled by the ionization state of the N-terminal amino group, peptide-lipid binding interactions are investigated by selectively enriched 15N (at the N-terminus) and natural-abundance 13C NMR spectroscopy. Upon binding to the PC membrane, the 15N NMR of the N-terminal NH3(+) shifts upfield. This observation supports a mechanism that the role of the N-terminal NH3(+) in stabilizing the binding state is through electrostatic attraction with a headgroup negative charge, i.e., PO4(-). Interestingly, when the side chain beta-carboxyl group in Asp4 is deionized at acidic pH, the 15N signal of the N-terminal NH3(+) exhibits no significant chemical-shift change upon membrane binding of achatin-I. The Asp4 side chain thus regulates efficiency of the electrostatic binding between the peptide N-terminal NH3(+) and the lipid headgroup PO4(-). 13C chemical shifts in the hydrophobic D-Phe2 residue are largely perturbed upon membrane binding, in the case where the side chain beta-CO2(-) in Asp4 is deionized; the deionization of Asp4 beta-CO2(-) increases the net hydrophobicity of achatin-I with a reduction of both the electrostatic hydration and the electrostatic attraction with the headgroup N(CH3)3(+) in the most superficial region of the PC membrane, resulting in deeper anchoring of the phenyl ring. Hence, the electrostatic effect of the side chain beta-CO2(-) in Asp4 floats achatin-I on the PC membrane surface, and the binding equilibrium is sensitively controlled by the ionization state of the N-terminal NH3(+).
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Affiliation(s)
- Tomohiro Kimura
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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25
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Ghosh PS, Verma A, Rotello VM. Binding and templation of nanoparticle receptors to peptide α-helices through surface recognition. Chem Commun (Camb) 2007:2796-8. [PMID: 17609779 DOI: 10.1039/b705554d] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Nanoparticles featuring highly flexible sidechains template to peptides, demonstrating substantial pre-organization of the particle monolayer.
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Affiliation(s)
- Partha S Ghosh
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, USA
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26
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Kruppa M, Imperato G, König B. Synthesis of chiral amino acids with metal ion chelating side chains from l-serine using Negishi cross-coupling reaction. Tetrahedron 2006. [DOI: 10.1016/j.tet.2005.11.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Vila-Perelló M, Tognon S, Sánchez-Vallet A, García-Olmedo F, Molina A, Andreu D. A Minimalist Design Approach to Antimicrobial Agents Based on a Thionin Template. J Med Chem 2005; 49:448-51. [PMID: 16420028 DOI: 10.1021/jm050882i] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Numerous studies have been devoted to the stabilization of secondary structure elements to improve receptor-ligand recognition. We report a novel application of this principle to create new antimicrobial agents using the highly folded thionin from Pyrularia puberaas a template. Non-native disulfide bonds have been used to induce two short linear segments of the protein into an amphipathic helix. The resulting 13- and 9-residue peptides are significantly more active than their linear counterparts and have an activity similar to that of native thionin.
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Affiliation(s)
- Miquel Vila-Perelló
- Department of Experimental and Health Sciences, Pompeu Fabra University, E-08003 Barcelona, Spain
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