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Li C, Sutherland D, Richter A, Coombe L, Yanai A, Warren RL, Kotkoff M, Hof F, Hoang LMN, Helbing CC, Birol I. De novo synthetic antimicrobial peptide design with a recurrent neural network. Protein Sci 2024; 33:e5088. [PMID: 38988311 PMCID: PMC11237553 DOI: 10.1002/pro.5088] [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: 12/18/2023] [Revised: 05/16/2024] [Accepted: 06/10/2024] [Indexed: 07/12/2024]
Abstract
Antibiotic resistance is recognized as an imminent and growing global health threat. New antimicrobial drugs are urgently needed due to the decreasing effectiveness of conventional small-molecule antibiotics. Antimicrobial peptides (AMPs), a class of host defense peptides, are emerging as promising candidates to address this need. The potential sequence space of amino acids is combinatorially vast, making it possible to extend the current arsenal of antimicrobial agents with a practically infinite number of new peptide-based candidates. However, mining naturally occurring AMPs, whether directly by wet lab screening methods or aided by bioinformatics prediction tools, has its theoretical limit regarding the number of samples or genomic/transcriptomic resources researchers have access to. Further, manually designing novel synthetic AMPs requires prior field knowledge, restricting its throughput. In silico sequence generation methods are gaining interest as a high-throughput solution to the problem. Here, we introduce AMPd-Up, a recurrent neural network based tool for de novo AMP design, and demonstrate its utility over existing methods. Validation of candidates designed by AMPd-Up through antimicrobial susceptibility testing revealed that 40 of the 58 generated sequences possessed antimicrobial activity against Escherichia coli and/or Staphylococcus aureus. These results illustrate that AMPd-Up can be used to design novel synthetic AMPs with potent activities.
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Affiliation(s)
- Chenkai Li
- Canada's Michael Smith Genome Sciences CentreBC Cancer AgencyVancouverBritish ColumbiaCanada
- Bioinformatics Graduate ProgramUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | - Darcy Sutherland
- Canada's Michael Smith Genome Sciences CentreBC Cancer AgencyVancouverBritish ColumbiaCanada
- Public Health LaboratoryBritish Columbia Centre for Disease ControlVancouverBritish ColumbiaCanada
- Department of Pathology and Laboratory MedicineUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | - Amelia Richter
- Canada's Michael Smith Genome Sciences CentreBC Cancer AgencyVancouverBritish ColumbiaCanada
- Public Health LaboratoryBritish Columbia Centre for Disease ControlVancouverBritish ColumbiaCanada
| | - Lauren Coombe
- Canada's Michael Smith Genome Sciences CentreBC Cancer AgencyVancouverBritish ColumbiaCanada
| | - Anat Yanai
- Canada's Michael Smith Genome Sciences CentreBC Cancer AgencyVancouverBritish ColumbiaCanada
- Public Health LaboratoryBritish Columbia Centre for Disease ControlVancouverBritish ColumbiaCanada
| | - René L. Warren
- Canada's Michael Smith Genome Sciences CentreBC Cancer AgencyVancouverBritish ColumbiaCanada
| | - Monica Kotkoff
- Canada's Michael Smith Genome Sciences CentreBC Cancer AgencyVancouverBritish ColumbiaCanada
| | - Fraser Hof
- Department of Chemistry and the Centre for Advanced Materials and Related TechnologyUniversity of VictoriaVictoriaBritish ColumbiaCanada
| | - Linda M. N. Hoang
- Public Health LaboratoryBritish Columbia Centre for Disease ControlVancouverBritish ColumbiaCanada
- Department of Pathology and Laboratory MedicineUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | - Caren C. Helbing
- Department of Biochemistry and MicrobiologyUniversity of VictoriaVictoriaBritish ColumbiaCanada
| | - Inanc Birol
- Canada's Michael Smith Genome Sciences CentreBC Cancer AgencyVancouverBritish ColumbiaCanada
- Public Health LaboratoryBritish Columbia Centre for Disease ControlVancouverBritish ColumbiaCanada
- Department of Pathology and Laboratory MedicineUniversity of British ColumbiaVancouverBritish ColumbiaCanada
- Department of Medical GeneticsUniversity of British ColumbiaVancouverBritish ColumbiaCanada
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2
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Kravchenko SV, Domnin PA, Grishin SY, Vershinin NA, Gurina EV, Zakharova AA, Azev VN, Mustaeva LG, Gorbunova EY, Kobyakova MI, Surin AK, Fadeev RS, Ostroumova OS, Ermolaeva SA, Galzitskaya OV. Enhancing the Antimicrobial Properties of Peptides through Cell-Penetrating Peptide Conjugation: A Comprehensive Assessment. Int J Mol Sci 2023; 24:16723. [PMID: 38069046 PMCID: PMC10706425 DOI: 10.3390/ijms242316723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/19/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
Combining antimicrobial peptides (AMPs) with cell-penetrating peptides (CPPs) has shown promise in boosting antimicrobial potency, especially against Gram-negative bacteria. We examined the CPP-AMP interaction with distinct bacterial types based on cell wall differences. Our investigation focused on AMPs incorporating penetratin CPP and dihybrid peptides containing both cell-penetrating TAT protein fragments from the human immunodeficiency virus and Antennapedia peptide (Antp). Assessment of the peptides TAT-AMP, AMP-Antp, and TAT-AMP-Antp revealed their potential against Gram-positive strains (Staphylococcus aureus, Methicillin-resistant Staphylococcus aureus (MRSA), and Bacillus cereus). Peptides TAT-AMP and AMP-Antp using an amyloidogenic AMP from S1 ribosomal protein Thermus thermophilus, at concentrations ranging from 3 to 12 μM, exhibited enhanced antimicrobial activity against B. cereus. TAT-AMP and TAT-AMP-Antp, using an amyloidogenic AMP from the S1 ribosomal protein Pseudomonas aeruginosa, at a concentration of 12 µM, demonstrated potent antimicrobial activity against S. aureus and MRSA. Notably, the TAT-AMP, at a concentration of 12 µM, effectively inhibited Escherichia coli (E. coli) growth and displayed antimicrobial effects similar to gentamicin after 15 h of incubation. Peptide characteristics determined antimicrobial activity against diverse strains. The study highlights the intricate relationship between peptide properties and antimicrobial potential. Mechanisms of AMP action are closely tied to bacterial cell wall attributes. Peptides with the TAT fragment exhibited enhanced antimicrobial activity against S. aureus, MRSA, and P. aeruginosa. Peptides containing only the Antp fragment displayed lower activity. None of the investigated peptides demonstrated cytotoxic or cytostatic effects on either BT-474 cells or human skin fibroblasts. In conclusion, CPP-AMPs offer promise against various bacterial strains, offering insights for targeted antimicrobial development.
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Affiliation(s)
- Sergey V. Kravchenko
- Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, 625003 Tyumen, Russia; (S.V.K.); (S.Y.G.); (N.A.V.); (E.V.G.)
| | - Pavel A. Domnin
- Biology Faculty, Lomonosov Moscow State University, 119991 Moscow, Russia;
- Gamaleya Research Centre of Epidemiology and Microbiology, 123098 Moscow, Russia;
| | - Sergei Y. Grishin
- Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, 625003 Tyumen, Russia; (S.V.K.); (S.Y.G.); (N.A.V.); (E.V.G.)
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia;
| | - Nikita A. Vershinin
- Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, 625003 Tyumen, Russia; (S.V.K.); (S.Y.G.); (N.A.V.); (E.V.G.)
| | - Elena V. Gurina
- Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, 625003 Tyumen, Russia; (S.V.K.); (S.Y.G.); (N.A.V.); (E.V.G.)
| | - Anastasiia A. Zakharova
- Institute of Cytology, Russian Academy of Sciences, 194064 St. Petersburg, Russia; (A.A.Z.); (O.S.O.)
| | - Viacheslav N. Azev
- The Branch of the Institute of Bioorganic Chemistry, Russian Academy of Sciences, 142290 Pushchino, Russia; (V.N.A.); (L.G.M.); (E.Y.G.)
| | - Leila G. Mustaeva
- The Branch of the Institute of Bioorganic Chemistry, Russian Academy of Sciences, 142290 Pushchino, Russia; (V.N.A.); (L.G.M.); (E.Y.G.)
| | - Elena Y. Gorbunova
- The Branch of the Institute of Bioorganic Chemistry, Russian Academy of Sciences, 142290 Pushchino, Russia; (V.N.A.); (L.G.M.); (E.Y.G.)
| | - Margarita I. Kobyakova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (M.I.K.); (R.S.F.)
- Research Institute of Clinical and Experimental Lymphology—Branch of the Institute of Cytology and Genetics Siberian Branch of Russian Academy of Sciences, 630060 Novosibirsk, Russia
| | - Alexey K. Surin
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia;
- The Branch of the Institute of Bioorganic Chemistry, Russian Academy of Sciences, 142290 Pushchino, Russia; (V.N.A.); (L.G.M.); (E.Y.G.)
- State Research Center for Applied Microbiology and Biotechnology, 142279 Obolensk, Russia
| | - Roman S. Fadeev
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (M.I.K.); (R.S.F.)
| | - Olga S. Ostroumova
- Institute of Cytology, Russian Academy of Sciences, 194064 St. Petersburg, Russia; (A.A.Z.); (O.S.O.)
| | | | - Oxana V. Galzitskaya
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia;
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (M.I.K.); (R.S.F.)
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3
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Gostaviceanu A, Gavrilaş S, Copolovici L, Copolovici DM. Membrane-Active Peptides and Their Potential Biomedical Application. Pharmaceutics 2023; 15:2091. [PMID: 37631305 PMCID: PMC10459175 DOI: 10.3390/pharmaceutics15082091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/24/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
Membrane-active peptides (MAPs) possess unique properties that make them valuable tools for studying membrane structure and function and promising candidates for therapeutic applications. This review paper provides an overview of the fundamental aspects of MAPs, focusing on their membrane interaction mechanisms and potential applications. MAPs exhibit various structural features, including amphipathic structures and specific amino acid residues, enabling selective interaction with multiple membranes. Their mechanisms of action involve disrupting lipid bilayers through different pathways, depending on peptide properties and membrane composition. The therapeutic potential of MAPs is significant. They have demonstrated antimicrobial activity against bacteria and fungi, making them promising alternatives to conventional antibiotics. MAPs can selectively target cancer cells and induce apoptosis, opening new avenues in cancer therapeutics. Additionally, MAPs serve as drug delivery vectors, facilitating the transport of therapeutic cargoes across cell membranes. They represent a fascinating class of biomolecules with significant potential in basic research and clinical applications. Understanding their mechanisms of action and designing peptides with enhanced selectivity and efficacy will further expand their utility in diverse fields. Exploring MAPs holds promise for developing novel therapeutic strategies against infections, cancer, and drug delivery challenges.
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Affiliation(s)
- Andreea Gostaviceanu
- Faculty of Food Engineering, Tourism and Environmental Protection, and Institute for Research, Development and Innovation in Technical and Natural Sciences, Aurel Vlaicu University, Elena Drăgoi St., No. 2, 310330 Arad, Romania; (A.G.); (S.G.); (L.C.)
- Biomedical Sciences Doctoral School, University of Oradea, University St., No. 1, 410087 Oradea, Romania
| | - Simona Gavrilaş
- Faculty of Food Engineering, Tourism and Environmental Protection, and Institute for Research, Development and Innovation in Technical and Natural Sciences, Aurel Vlaicu University, Elena Drăgoi St., No. 2, 310330 Arad, Romania; (A.G.); (S.G.); (L.C.)
| | - Lucian Copolovici
- Faculty of Food Engineering, Tourism and Environmental Protection, and Institute for Research, Development and Innovation in Technical and Natural Sciences, Aurel Vlaicu University, Elena Drăgoi St., No. 2, 310330 Arad, Romania; (A.G.); (S.G.); (L.C.)
| | - Dana Maria Copolovici
- Faculty of Food Engineering, Tourism and Environmental Protection, and Institute for Research, Development and Innovation in Technical and Natural Sciences, Aurel Vlaicu University, Elena Drăgoi St., No. 2, 310330 Arad, Romania; (A.G.); (S.G.); (L.C.)
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4
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Gould S, Templin MV. Off target toxicities and links with physicochemical properties of medicinal products, including antibiotics, oligonucleotides, lipid nanoparticles (with cationic and/or anionic charges). Data review suggests an emerging pattern. Toxicol Lett 2023; 384:14-29. [PMID: 37454775 DOI: 10.1016/j.toxlet.2023.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 07/10/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Toxicology is an essential part of any drug development plan. Circumnavigating the risk of failure because of a toxicity issue can be a challenge, and failure in late development is extremely costly. To identify potential risks, it requires more than just understanding the biological target. The toxicologist needs to consider a compound's structure, it's physicochemical properties (including the impact of the overall formulation), as well as the biological target (e.g., receptor interactions). Understanding the impact of the physicochemical properties can be used to predict potential toxicities in advance by incorporating key endpoints in early screening strategies and/or used to compare toxicity profiles across lead candidates. This review discussed the risks of off-target and/or non-specific toxicities that may be associated with the physicochemical properties of compounds, especially those carrying dominant positive or negative charges, including amphiphilic small molecules, peptides, oligonucleotides and lipids/liposomes/lipid nanoparticles. The latter of which are being seen more and more in drug development, including the recent Covid pandemic, where mRNA and lipid nanoparticle technology is playing more of a role in vaccine development. The translation between non-clinical and clinical data is also considered, questioning how a physicochemical driven toxicity may be more universal across species, which means that such toxicity may be reassuringly translatable between species and as such, this information may also be considered as a support to the 3 R's, particularly in the early screening stages of a drug development plan.
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5
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Polinário G, Primo LMDG, Rosa MABC, Dett FHM, Barbugli PA, Roque-Borda CA, Pavan FR. Antimicrobial peptides as drugs with double response against Mycobacterium tuberculosis coinfections in lung cancer. Front Microbiol 2023; 14:1183247. [PMID: 37342560 PMCID: PMC10277934 DOI: 10.3389/fmicb.2023.1183247] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 05/16/2023] [Indexed: 06/23/2023] Open
Abstract
Tuberculosis and lung cancer are, in many cases, correlated diseases that can be confused because they have similar symptoms. Many meta-analyses have proven that there is a greater chance of developing lung cancer in patients who have active pulmonary tuberculosis. It is, therefore, important to monitor the patient for a long time after recovery and search for combined therapies that can treat both diseases, as well as face the great problem of drug resistance. Peptides are molecules derived from the breakdown of proteins, and the membranolytic class is already being studied. It has been proposed that these molecules destabilize cellular homeostasis, performing a dual antimicrobial and anticancer function and offering several possibilities of adaptation for adequate delivery and action. In this review, we focus on two important reason for the use of multifunctional peptides or peptides, namely the double activity and no harmful effects on humans. We review some of the main antimicrobial and anti-inflammatory bioactive peptides and highlight four that have anti-tuberculosis and anti-cancer activity, which may contribute to obtaining drugs with this dual functionality.
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Affiliation(s)
- Giulia Polinário
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | | | | | | | - Paula Aboud Barbugli
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | | | - Fernando Rogério Pavan
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
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6
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Yang Z, Zhang J, Wu FG, Lin F. Structural Characterization, Functional Profiling, and Mechanism Study of Four Antimicrobial Peptides for Antibacterial and Anticancer Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:2161-2170. [PMID: 36730301 DOI: 10.1021/acs.langmuir.2c02526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Antimicrobial peptides (AMPs) are potent compounds for treating bacterial infection and cancer, drawing ever-increasing interest. However, the function and mechanism of most AMPs remain to be explored. In this research, we focused on investigating the antibacterial and anticancer activities of four AMPs (Dhvar4, Lasioglossin-III, Macropin 1, and Temporin La) and the possible corresponding mechanisms. All four AMPs are cationic α-helical with moderate hydrophobicity and high helicity. They have broad-spectrum antibacterial capacities, among which the antibacterial activities of Dhvar4 and Temporin La are not as effective as Lasioglossin-III and Macropin 1. Macropin 1 exhibited the highest antibacterial effect with a pretty low minimal inhibitory concentration (MIC) of 2-8 μM. Meanwhile, Lasioglossin-III exhibited the strongest anticancer activities, displaying the IC50 of 26.36 μM for A549 and 7.75 μM for HepG2. Although Dhvar4 possessed the highest positive charge and entered the bacterial and animal cells in large amounts, it displayed the lowest bactericidal and anticancer activities which might be ascribed to its lowest hydrophobicity and thus the weakest cell membrane damage capability. It seems that the positive charge and cell internalization play a supporting rather than a determined role in antibacterial and anticancer activities of AMPs. All the four AMPs damaged the bacterial cell membrane with Macropin 1 damaging the cell membrane of Escherichia coli the most and Lasioglossin-III destroying the cell membrane of Staphylococcus aureus the worst. In addition, the animal cellular internalization of the four peptides was temperature-dependent and mainly mediated by caveolae-mediated endocytosis, and they were distributed in lysosomes once inside the cells. These findings expand our knowledge on the function and mechanism of AMPs, laying the fundamental theoretical basis for designing and engineering AMPs for infection and cancer treatment.
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Affiliation(s)
- Zihuayuan Yang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Jie Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Fengming Lin
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
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7
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Effect of hydrophobic moment on membrane interaction and cell penetration of apolipoprotein E-derived arginine-rich amphipathic α-helical peptides. Sci Rep 2022; 12:4959. [PMID: 35322082 PMCID: PMC8943082 DOI: 10.1038/s41598-022-08876-9] [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: 12/09/2021] [Accepted: 03/14/2022] [Indexed: 12/15/2022] Open
Abstract
We previously developed an amphipathic arginine-rich peptide, A2-17, which has high ability to directly penetrate across cell membranes. To understand the mechanism of the efficient cell-penetrating ability of the A2-17 peptide, we designed three structural isomers of A2-17 having different values of the hydrophobic moment and compared their membrane interaction and direct cell penetration. Confocal fluorescence microscopy revealed that cell penetration efficiency of peptides tends to increase with their hydrophobic moment, in which A2-17 L14R/R15L, an A2-17 isomer with the highest hydrophobic moment, predominantly remains on plasma cell membranes. Consistently, Trp fluorescence analysis indicated the deepest insertion of A2-17 L14R/R15L into lipid membranes among all A2-17 isomers. Electrophysiological analysis showed that the duration and charge flux of peptide-induced pores in lipid membranes were prominent for A2-17 L14R/R15L, indicating the formation of stable membrane pores. Indeed, the A2-17 L14R/R15L peptide exhibited the strongest membrane damage to CHO-K1 cells. Atomic force microscopy quantitatively defined the peptide-induced membrane perturbation as the decrease in the stiffness of lipid vesicles, which was correlated with the hydrophobic moment of all A2-17 isomers. These results indicate that optimal membrane perturbation by amphipathic A2-17 peptide is critical for its efficient penetration into cells without inducing stabilized membrane pores.
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8
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Juhász T, Quemé-Peña M, Kővágó B, Mihály J, Ricci M, Horváti K, Bősze S, Zsila F, Beke-Somfai T. Interplay between membrane active host defense peptides and heme modulates their assemblies and in vitro activity. Sci Rep 2021; 11:18328. [PMID: 34526616 PMCID: PMC8443738 DOI: 10.1038/s41598-021-97779-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/28/2021] [Indexed: 02/08/2023] Open
Abstract
In the emerging era of antimicrobial resistance, the susceptibility to co-infections of patients suffering from either acquired or inherited hemolytic disorders can lead to dramatic increase in mortality rates. Closely related, heme liberated during hemolysis is one of the major sources of iron, which is vital for both host and invading microorganisms. While recent intensive research in the field has demonstrated that heme exerts diverse local effects including impairment of immune cells functions, it is almost completely unknown how it may compromise key molecules of our innate immune system, such as antimicrobial host defense peptides (HDPs). Since HDPs hold great promise as natural therapeutic agents against antibiotic-resistant microbes, understanding the effects that may modulate their action in microbial infection is crucial. Here we explore how hemin can interact directly with selected HDPs and influence their structure and membrane activity. It is revealed that induced helical folding, large assembly formation, and altered membrane activity is promoted by hemin. However, these effects showed variations depending mainly on peptide selectivity toward charged lipids, and the affinity of the peptide and hemin to lipid bilayers. Hemin-peptide complexes are sought to form semi-folded co-assemblies, which are present even with model membranes resembling mammalian or bacterial lipid compositions. In vitro cell-based toxicity assays supported that toxic effects of HDPs could be attenuated due to their assembly formation. These results are in line with our previous findings on peptide-lipid-small molecule systems suggesting that small molecules present in the complex in vivo milieu can regulate HDP function. Inversely, diverse effects of endogenous compounds could also be manipulated by HDPs.
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Affiliation(s)
- Tünde Juhász
- grid.425578.90000 0004 0512 3755Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Budapest, Hungary
| | - Mayra Quemé-Peña
- grid.425578.90000 0004 0512 3755Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Budapest, Hungary ,grid.5591.80000 0001 2294 6276Hevesy György PhD School of Chemistry, Eötvös Loránd University, Budapest, Hungary
| | - Bence Kővágó
- grid.425578.90000 0004 0512 3755Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Budapest, Hungary
| | - Judith Mihály
- grid.425578.90000 0004 0512 3755Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Budapest, Hungary
| | - Maria Ricci
- grid.425578.90000 0004 0512 3755Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Budapest, Hungary
| | - Kata Horváti
- grid.5591.80000 0001 2294 6276ELKH-ELTE Research Group of Peptide Chemistry, Eötvös Loránd University, Budapest, Hungary ,grid.5591.80000 0001 2294 6276Department of Organic Chemistry, Eötvös Loránd University, Budapest, Hungary
| | - Szilvia Bősze
- grid.5591.80000 0001 2294 6276ELKH-ELTE Research Group of Peptide Chemistry, Eötvös Loránd University, Budapest, Hungary
| | - Ferenc Zsila
- grid.425578.90000 0004 0512 3755Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Budapest, Hungary
| | - Tamás Beke-Somfai
- grid.425578.90000 0004 0512 3755Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Budapest, Hungary
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He J, Liang D, Liang Y, Zuo S, Zhao W. [Design, screening and antibacterial activity evaluation of the novel antibacterial peptide KR-1]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2021; 41:923-930. [PMID: 34238746 DOI: 10.12122/j.issn.1673-4254.2021.06.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To design novel antimicrobial peptides with high activity and low toxicity and evaluate their effect against Streptococcus mutans and other oral bacteria for prevention and treatment of dental caries. OBJECTIVE We synthesized two antimicrobial peptides (KR-1 and KR-2) using Dhvar4 (a histatins5 mimic) as the template. The antimicrobial peptides with high activity and low toxicity were screened using minimal inhibitory concentration (MIC) test, hemolysis test, and CCK-8 assay. Streptococcus mutans biofilms cultured in 96-well plates were divided into experimental group (KR-1) and positive control group (CHX) and treated with concentration gradients (0.6×, 0.8×, 1× and 2× MICs) of KR-1 and CHX, respectively. Crystal violet staining was used for quantitative analysis of the changes of the biofilms after the treatments. The structural changes of the biofilms were observed with laser confocal microscopy after KR-1 treatment at 10 × MIC. The antimicrobial activity of KR-1 against oral Streptococcus was analyzed based on the time required for sterilization after KR-1 treatment. OBJECTIVE The MIC of KR-1 and KR-2 for S. mutans was 3.2 μmol/L and 12.8 μmol/L, respectively. Under the effective concentration, KR-1 and KR-2 resulted in hemolysis rates of 0.35% and 48.8% in rabbit red blood cells and lowered the survival rates of gingival fibroblasts to 88.7% and 21.94%, respectively. KR-1 treatment significantly reduced biofilm formation with a minimum biofilm inhibition concentration (MBIC50) lower than 1.92 μmol/L, and showed an even stronger antimicrobial than CHX at the concentration of 2.56 μmol/L (P=0.001). Confocal laser scanning microscopy revealed that the biofilm structure became loosened after KR-1 treatment, which was capable of killing about 90% of the bacteria within 5 min. OBJECTIVE The antimicrobial peptide KR-1 has a stronger antibacterial activity and a low toxicity with a good inhibitory effect against S. mutans biofilm.
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Affiliation(s)
- J He
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - D Liang
- Department of Stomatology, Affiliated Zhongshan Hospital of Sun Yat-sen University, Zhongshan 528400, China
| | - Y Liang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - S Zuo
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - W Zhao
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
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10
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Cell-Penetrating Peptides and Transportan. Pharmaceutics 2021; 13:pharmaceutics13070987. [PMID: 34210007 PMCID: PMC8308968 DOI: 10.3390/pharmaceutics13070987] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 12/21/2022] Open
Abstract
In the most recent 25–30 years, multiple novel mechanisms and applications of cell-penetrating peptides (CPP) have been demonstrated, leading to novel drug delivery systems. In this review, I present a brief introduction to the CPP area with selected recent achievements. This is followed by a nostalgic journey into the research in my own laboratories, which lead to multiple CPPs, starting from transportan and paving a way to CPP-based therapeutic developments in the delivery of bio-functional materials, such as peptides, proteins, vaccines, oligonucleotides and small molecules, etc.
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11
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Antimicrobial Peptides, a Pool for Novel Cell Penetrating Peptides Development and Vice Versa. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10161-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Farkas V, Ferentzi K, Horváti K, Perczel A. Cost-Effective Flow Peptide Synthesis: Metamorphosis of HPLC. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.0c00178] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Viktor Farkas
- MTA-ELTE Protein Modeling Research Group, Eötvös Loránd University, Pázmány Péter s. 1/a, Budapest H-1117, Hungary
| | - Kristóf Ferentzi
- ELTE Hevesy György PhD School of Chemistry, Eötvös Loránd University, Pázmány Péter s. 1/a, Budapest H-1117, Hungary
| | - Kata Horváti
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd University, Pázmány Péter s. 1/a, Budapest H-1117, Hungary
| | - András Perczel
- MTA-ELTE Protein Modeling Research Group, Eötvös Loránd University, Pázmány Péter s. 1/a, Budapest H-1117, Hungary
- Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter s. 1/a, Budapest H-1117, Hungary
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13
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Ptaszyńska N, Gucwa K, Olkiewicz K, Heldt M, Serocki M, Stupak A, Martynow D, Dębowski D, Gitlin-Domagalska A, Lica J, Łęgowska A, Milewski S, Rolka K. Conjugates of Ciprofloxacin and Levofloxacin with Cell-Penetrating Peptide Exhibit Antifungal Activity and Mammalian Cytotoxicity. Int J Mol Sci 2020; 21:ijms21134696. [PMID: 32630159 PMCID: PMC7369900 DOI: 10.3390/ijms21134696] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/22/2020] [Accepted: 06/30/2020] [Indexed: 01/02/2023] Open
Abstract
Seven conjugates composed of well-known fluoroquinolone antibacterial agents, ciprofloxacin (CIP) or levofloxacin (LVX), and a cell-penetrating peptide transportan 10 (TP10-NH2) were synthesised. The drugs were covalently bound to the peptide via an amide bond, methylenecarbonyl moiety, or a disulfide bridge. Conjugation of fluoroquinolones to TP10-NH2 resulted in congeners demonstrating antifungal in vitro activity against human pathogenic yeasts of the Candida genus (MICs in the 6.25–100 µM range), whereas the components were poorly active. The antibacterial in vitro activity of most of the conjugates was lower than the activity of CIP or LVX, but the antibacterial effect of CIP-S-S-TP10-NH2 was similar to the mother fluoroquinolone. Additionally, for two representative CIP and LVX conjugates, a rapid bactericidal effect was shown. Compared to fluoroquinolones, TP10-NH2 and the majority of its conjugates generated a relatively low level of reactive oxygen species (ROS) in human embryonic kidney cells (HEK293) and human myeloid leukemia cells (HL-60). The conjugates exhibited cytotoxicity against three cell lines, HEK293, HepG2 (human liver cancer cell line), and LLC-PK1 (old male pig kidney cells), with IC50 values in the 10–100 µM range and hemolytic activity. The mammalian toxicity was due to the intrinsic cytoplasmic membrane disruption activity of TP10-NH2 since fluoroquinolones themselves were not cytotoxic. Nevertheless, the selectivity index values of the conjugates, both for the bacteria and human pathogenic yeasts, remained favourable.
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Affiliation(s)
- Natalia Ptaszyńska
- Department of Molecular Biochemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdańsk, Poland; (N.P.); (K.G.); (K.O.); (D.D.); (A.G.-D.); (A.Ł.); (K.R.)
| | - Katarzyna Gucwa
- Department of Molecular Biochemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdańsk, Poland; (N.P.); (K.G.); (K.O.); (D.D.); (A.G.-D.); (A.Ł.); (K.R.)
| | - Katarzyna Olkiewicz
- Department of Molecular Biochemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdańsk, Poland; (N.P.); (K.G.); (K.O.); (D.D.); (A.G.-D.); (A.Ł.); (K.R.)
| | - Mateusz Heldt
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdańsk, Poland; (M.H.); (M.S.); (D.M.); (S.M.)
| | - Marcin Serocki
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdańsk, Poland; (M.H.); (M.S.); (D.M.); (S.M.)
| | - Anna Stupak
- Laboratory of Bacterial Genetics, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdańsk, Poland;
| | - Dorota Martynow
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdańsk, Poland; (M.H.); (M.S.); (D.M.); (S.M.)
| | - Dawid Dębowski
- Department of Molecular Biochemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdańsk, Poland; (N.P.); (K.G.); (K.O.); (D.D.); (A.G.-D.); (A.Ł.); (K.R.)
| | - Agata Gitlin-Domagalska
- Department of Molecular Biochemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdańsk, Poland; (N.P.); (K.G.); (K.O.); (D.D.); (A.G.-D.); (A.Ł.); (K.R.)
| | - Jan Lica
- Department of Molecular Biochemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdańsk, Poland; (N.P.); (K.G.); (K.O.); (D.D.); (A.G.-D.); (A.Ł.); (K.R.)
- Correspondence:
| | - Anna Łęgowska
- Department of Molecular Biochemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdańsk, Poland; (N.P.); (K.G.); (K.O.); (D.D.); (A.G.-D.); (A.Ł.); (K.R.)
| | - Sławomir Milewski
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, 80-233 Gdańsk, Poland; (M.H.); (M.S.); (D.M.); (S.M.)
| | - Krzysztof Rolka
- Department of Molecular Biochemistry, Faculty of Chemistry, University of Gdansk, 80-308 Gdańsk, Poland; (N.P.); (K.G.); (K.O.); (D.D.); (A.G.-D.); (A.Ł.); (K.R.)
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14
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Tailoring Uptake Efficacy of HSV-1 gD Derived Carrier Peptides. Biomolecules 2020; 10:biom10050721. [PMID: 32384673 PMCID: PMC7277387 DOI: 10.3390/biom10050721] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/24/2020] [Accepted: 05/01/2020] [Indexed: 12/25/2022] Open
Abstract
Regions of the Herpes simplex virus-1 (HSV-1) glycoprotein D (gD) were chosen to design carrier peptides based on the known tertiary structure of the virus entry receptor complexes. These complexes consist of the following: HSV-1 gD–nectin-1 and HSV-1 gD–herpesvirus entry mediator (HVEM). Three sets of peptides were synthesised with sequences covering the (i) N-terminal HVEM- and nectin-1 binding region -5–42, (ii) the 181–216 medium region containing nectin-1 binding sequences and (iii) the C-terminal nectin-1 binding region 214–255. The carrier candidates were prepared with acetylated and 5(6)-carboxyfluorescein labelled N-termini. The peptides were chemically characterised and their conformational features in solution were also determined. In vitro internalisation profile and intracellular localisation were evaluated on SH-SY5Y neuroblastoma cells. Peptide originated from the C-terminal region 224–247 of the HSV-1 gD showed remarkable internalisation compared to the other peptides with low to moderate entry. Electronic circular dichroism secondary structure studies of the peptides revealed that the most effectively internalised peptides exhibit high helical propensity at increasing TFE concentrations. We proved that oligopeptides derived from the nectin-1 binding region are promising candidates—with possibility of Lys237Arg and/or Trp241Phe substitutions—for side-reaction free conjugation of bioactive compounds—drugs or gene therapy agents—as cargos.
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15
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Drug Conjugation Induced Modulation of Structural and Membrane Interaction Features of Cationic Cell-Permeable Peptides. Int J Mol Sci 2020; 21:ijms21062197. [PMID: 32235796 PMCID: PMC7139830 DOI: 10.3390/ijms21062197] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 02/07/2023] Open
Abstract
Cell-penetrating peptides might have great potential for enhancing the therapeutic effect of drug molecules against such dangerous pathogens as Mycobacterium tuberculosis (Mtb), which causes a major health problem worldwide. A set of cationic cell-penetration peptides with various hydrophobicity were selected and synthesized as drug carrier of isoniazid (INH), a first-line antibacterial agent against tuberculosis. Molecular interactions between the peptides and their INH-conjugates with cell-membrane-forming lipid layers composed of DPPC and mycolic acid (a characteristic component of Mtb cell wall) were evaluated, using the Langmuir balance technique. Secondary structure of the INH conjugates was analyzed and compared to that of the native peptides by circular dichroism spectroscopic experiments performed in aqueous and membrane mimetic environment. A correlation was found between the conjugation induced conformational and membrane affinity changes of the INH-peptide conjugates. The degree and mode of interaction were also characterized by AFM imaging of penetrated lipid layers. In vitro biological evaluation was performed with Penetratin and Transportan conjugates. Results showed similar internalization rate into EBC-1 human squamous cell carcinoma, but markedly different subcellular localization and activity on intracellular Mtb.
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16
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Anionic food color tartrazine enhances antibacterial efficacy of histatin-derived peptide DHVAR4 by fine-tuning its membrane activity. Q Rev Biophys 2020; 53:e5. [PMID: 32115014 DOI: 10.1017/s0033583520000013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Here it is demonstrated how some anionic food additives commonly used in our diet, such as tartrazine (TZ), bind to DHVAR4, an antimicrobial peptide (AMP) derived from oral host defense peptides, resulting in significantly fostered toxic activity against both Gram-positive and Gram-negative bacteria, but not against mammalian cells. Biophysical studies on the DHVAR4-TZ interaction indicate that initially large, positively charged aggregates are formed, but in the presence of lipid bilayers, they rather associate with the membrane surface. In contrast to synergistic effects observed for mixed antibacterial compounds, this is a principally different mechanism, where TZ directly acts on the membrane-associated AMP promoting its biologically active helical conformation. Model vesicle studies show that compared to dye-free DHVAR4, peptide-TZ complexes are more prone to form H-bonds with the phosphate ester moiety of the bilayer head-group region resulting in more controlled bilayer fusion mechanism and concerted severe cell damage. AMPs are considered as promising compounds to combat formidable antibiotic-resistant bacterial infections; however, we know very little on their in vivo actions, especially on how they interact with other chemical agents. The current example illustrates how food dyes can modulate AMP activity, which is hoped to inspire improved therapies against microbial infections in the alimentary tract. Results also imply that the structure and function of natural AMPs could be manipulated by small compounds, which may also offer a new strategic concept for the future design of peptide-based antimicrobials.
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17
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Agbale CM, Sarfo JK, Galyuon IK, Juliano SA, Silva GGO, Buccini DF, Cardoso MH, Torres MDT, Angeles-Boza AM, de la Fuente-Nunez C, Franco OL. Antimicrobial and Antibiofilm Activities of Helical Antimicrobial Peptide Sequences Incorporating Metal-Binding Motifs. Biochemistry 2019; 58:3802-3812. [PMID: 31448597 DOI: 10.1021/acs.biochem.9b00440] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Antimicrobial peptides (AMPs) represent alternative strategies to combat the global health problem of antibiotic resistance. However, naturally occurring AMPs are generally not sufficiently active for use as antibiotics. Optimized synthetic versions incorporating additional design principles are needed. Here, we engineered amino-terminal Cu(II) and Ni(II) (ATCUN) binding motifs, which can enhance biological function, into the native sequence of two AMPs, CM15 and citropin1.1. The incorporation of metal-binding motifs modulated the antimicrobial activity of synthetic peptides against a panel of carbapenem-resistant enterococci (CRE) bacteria, including carbapenem-resistant Klebsiella pneumoniae (KpC+) and Escherichia coli (KpC+). Activity modulation depended on the type of ATCUN variant utilized. Membrane permeability assays revealed that the in silico selected lead template, CM15, and its ATCUN analogs increased bacterial cell death. Mass spectrometry, circular dichroism, and molecular dynamics simulations indicated that coordinating ATCUN derivatives with Cu(II) ions did not increase the helical tendencies of the AMPs. CM15 ATCUN variants, when combined with Meropenem, streptomycin, or chloramphenicol, showed synergistic effects against E. coli (KpC+ 1812446) biofilms. Motif addition also reduced the hemolytic activity of the wild-type AMP and improved the survival rate of mice in a systemic infection model. The dependence of these bioactivities on the particular amino acids of the ATCUN motif highlights the possible use of size, charge, and hydrophobicity to fine-tune AMP biological function. Our data indicate that incorporating metal-binding motifs into peptide sequences leads to synthetic variants with modified biological properties. These principles may be applied to augment the activities of other peptide sequences.
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Affiliation(s)
- Caleb M Agbale
- S-INOVA Biotech, Programa de Pós-Graduação em Biotecnologia , Universidade Católica Dom Bosco , Campo Grande , Mato Grosso Do Sul, MS 79117-900 , Brazil.,Department of Biochemistry, School of Biological Sciences, College of Agriculture and Natural Sciences , University of Cape Coast , Cape Coast , Ghana.,Department of Molecular Biology and Biotechnology, School of Biological Sciences, College of Agriculture and Natural Sciences , University of Cape Coast , Cape Coast , Ghana
| | - Justice K Sarfo
- S-INOVA Biotech, Programa de Pós-Graduação em Biotecnologia , Universidade Católica Dom Bosco , Campo Grande , Mato Grosso Do Sul, MS 79117-900 , Brazil
| | - Isaac K Galyuon
- Department of Molecular Biology and Biotechnology, School of Biological Sciences, College of Agriculture and Natural Sciences , University of Cape Coast , Cape Coast , Ghana
| | - Samuel A Juliano
- Department of Chemistry , University of Connecticut , Storrs , Connecticut 06269 , United States
| | - Gislaine G O Silva
- S-INOVA Biotech, Programa de Pós-Graduação em Biotecnologia , Universidade Católica Dom Bosco , Campo Grande , Mato Grosso Do Sul, MS 79117-900 , Brazil
| | - Danieli F Buccini
- S-INOVA Biotech, Programa de Pós-Graduação em Biotecnologia , Universidade Católica Dom Bosco , Campo Grande , Mato Grosso Do Sul, MS 79117-900 , Brazil
| | - Marlon H Cardoso
- S-INOVA Biotech, Programa de Pós-Graduação em Biotecnologia , Universidade Católica Dom Bosco , Campo Grande , Mato Grosso Do Sul, MS 79117-900 , Brazil.,Centro de Análises de Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia , Universidade Católica de Brasília , Brasília , DF 70790-160 , Brazil.,Programa de Pós-Graduação em Patologia Molecular, Faculdade de Medicina , Universidade de Brasília , Brasília , DF 70910-900 , Brazil
| | - Marcelo D T Torres
- Machine Biology Group, Departments of Psychiatry and Microbiology, Perelman School of Medicine, and Department of Bioengineering , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Alfredo M Angeles-Boza
- Department of Chemistry , University of Connecticut , Storrs , Connecticut 06269 , United States.,Institute of Materials Science , University of Connecticut , Storrs , Connecticut 06269 , United States
| | - Cesar de la Fuente-Nunez
- Machine Biology Group, Departments of Psychiatry and Microbiology, Perelman School of Medicine, and Department of Bioengineering , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Octavio L Franco
- S-INOVA Biotech, Programa de Pós-Graduação em Biotecnologia , Universidade Católica Dom Bosco , Campo Grande , Mato Grosso Do Sul, MS 79117-900 , Brazil.,Centro de Análises de Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia , Universidade Católica de Brasília , Brasília , DF 70790-160 , Brazil.,Programa de Pós-Graduação em Patologia Molecular, Faculdade de Medicina , Universidade de Brasília , Brasília , DF 70910-900 , Brazil
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18
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Torres MD, Sothiselvam S, Lu TK, de la Fuente-Nunez C. Peptide Design Principles for Antimicrobial Applications. J Mol Biol 2019; 431:3547-3567. [DOI: 10.1016/j.jmb.2018.12.015] [Citation(s) in RCA: 184] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 12/19/2018] [Accepted: 12/22/2018] [Indexed: 02/08/2023]
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19
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Juretić D, Simunić J. Design of α-helical antimicrobial peptides with a high selectivity index. Expert Opin Drug Discov 2019; 14:1053-1063. [DOI: 10.1080/17460441.2019.1642322] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Davor Juretić
- Mediterranean Institute for Life Sciences, Split, Croatia
- Department of Physics, Faculty of Science, University of Split, Split, Croatia
| | - Juraj Simunić
- Division of molecular biology, Ruđer Bošković Institute, Zagreb, Croatia
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20
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Quemé‐Peña M, Juhász T, Mihály J, Cs. Szigyártó I, Horváti K, Bősze S, Henczkó J, Pályi B, Németh C, Varga Z, Zsila F, Beke‐Somfai T. Manipulating Active Structure and Function of Cationic Antimicrobial Peptide CM15 with the Polysulfonated Drug Suramin: A Step Closer to in Vivo Complexity. Chembiochem 2019; 20:1578-1590. [PMID: 30720915 PMCID: PMC6618317 DOI: 10.1002/cbic.201800801] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Indexed: 12/11/2022]
Abstract
Antimicrobial peptides (AMPs) kill bacteria by targeting their membranes through various mechanisms involving peptide assembly, often coupled with disorder-to-order structural transition. However, for several AMPs, similar conformational changes in cases in which small organic compounds of both endogenous and exogenous origin have induced folded peptide conformations have recently been reported. Thus, the function of AMPs and of natural host defence peptides can be significantly affected by the local complex molecular environment in vivo; nonetheless, this area is hardly explored. To address the relevance of such interactions with regard to structure and function, we have tested the effects of the therapeutic drug suramin on the membrane activity and antibacterial efficiency of CM15, a potent hybrid AMP. The results provided insight into a dynamic system in which peptide interaction with lipid bilayers is interfered with by the competitive binding of CM15 to suramin, resulting in an equilibrium dependent on peptide-to-drug ratio and vesicle surface charge. In vitro bacterial tests showed that when CM15⋅suramin complex formation dominates over membrane binding, antimicrobial activity is abolished. On the basis of this case study, it is proposed that small-molecule secondary structure regulators can modify AMP function and that this should be considered and could potentially be exploited in future development of AMP-based antimicrobial agents.
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Affiliation(s)
- Mayra Quemé‐Peña
- Institute of Materials and Environmental ChemistryResearch Centre for Natural SciencesHungarian Academy of SciencesMagyar tudósok körútja 21117BudapestHungary
| | - Tünde Juhász
- Institute of Materials and Environmental ChemistryResearch Centre for Natural SciencesHungarian Academy of SciencesMagyar tudósok körútja 21117BudapestHungary
| | - Judith Mihály
- Institute of Materials and Environmental ChemistryResearch Centre for Natural SciencesHungarian Academy of SciencesMagyar tudósok körútja 21117BudapestHungary
| | - Imola Cs. Szigyártó
- Institute of Materials and Environmental ChemistryResearch Centre for Natural SciencesHungarian Academy of SciencesMagyar tudósok körútja 21117BudapestHungary
| | - Kata Horváti
- MTA-ELTE Research Group of Peptide ChemistryHungarian Academy of SciencesEötvös Loránd UniversityPázmány Péter sétány 1/A1117BudapestHungary
| | - Szilvia Bősze
- MTA-ELTE Research Group of Peptide ChemistryHungarian Academy of SciencesEötvös Loránd UniversityPázmány Péter sétány 1/A1117BudapestHungary
| | - Judit Henczkó
- National Biosafety LaboratoryNational Public Health CenterAlbert Flórián út 21097BudapestHungary
| | - Bernadett Pályi
- National Biosafety LaboratoryNational Public Health CenterAlbert Flórián út 21097BudapestHungary
| | - Csaba Németh
- Institute of Materials and Environmental ChemistryResearch Centre for Natural SciencesHungarian Academy of SciencesMagyar tudósok körútja 21117BudapestHungary
| | - Zoltán Varga
- Institute of Materials and Environmental ChemistryResearch Centre for Natural SciencesHungarian Academy of SciencesMagyar tudósok körútja 21117BudapestHungary
| | - Ferenc Zsila
- Institute of Materials and Environmental ChemistryResearch Centre for Natural SciencesHungarian Academy of SciencesMagyar tudósok körútja 21117BudapestHungary
| | - Tamás Beke‐Somfai
- Institute of Materials and Environmental ChemistryResearch Centre for Natural SciencesHungarian Academy of SciencesMagyar tudósok körútja 21117BudapestHungary
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21
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The lipid mediator lysophosphatidic acid induces folding of disordered peptides with basic amphipathic character into rare conformations. Sci Rep 2018; 8:14499. [PMID: 30266943 PMCID: PMC6162328 DOI: 10.1038/s41598-018-32786-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 09/10/2018] [Indexed: 02/07/2023] Open
Abstract
Membrane-active, basic amphipathic peptides represent a class of biomolecules with diverse functions. Sequentially close protein segments also show similar behaviour in several ways. Here we investigated the effect of the lipid mediator lysophosphatidic acid (LPA) on the conformation of structurally disordered peptides including extracellular antimicrobial peptides (AMPs), and calmodulin-binding motifs derived from cytosolic and membrane target proteins. The interaction with associated LPA resulted in gain of ordered secondary structure elements, which for most cases were previously uncharacteristic of the particular peptide. Results revealed mechanism of the LPA-peptide interactions with regulation of the lipid on peptide conformation and oligomerization in a concentration-dependent manner involving (1) relocation of tryptophan residues into the lipid cluster, (2) multiple contacts between the binding partners dictated by complex driving forces, (3) multiple peptide binding to LPA associates with an affinity in the low micromolar range, and (4) selectivity for LPA compared with structurally related lipids. In line with recent findings showing endogenous molecules inducing structural changes in AMPs, we propose that accumulation of LPA in signalling or pathological processes might modulate host-defense activity or trigger certain processes by direct interaction with cationic amphipathic peptide sequences.
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22
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Membrane affinity and fluorescent labelling: comparative study of monolayer interaction, cellular uptake and cytotoxicity profile of carboxyfluorescein-conjugated cationic peptides. Amino Acids 2018; 50:1557-1571. [PMID: 30099595 DOI: 10.1007/s00726-018-2630-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 07/30/2018] [Indexed: 02/07/2023]
Abstract
Fluorescent labelling is a common approach to reveal the molecular details of cellular uptake, internalisation, transport, distribution processes in biological systems. The conjugation with a fluorescent moiety might affect relevant physico-chemical and in vitro transport properties of the bioactive component. A representative set of seven cationic peptides-including cell-penetrating peptides as well as antimicrobial peptides and synthetic derivatives-was selected for our comparative study. Membrane affinity of the peptides and their 5(6)-carboxyfluorescein (Cf) derivatives was determined quantitatively and compared applying Langmuir monolayer of zwitterionic (DPPC) and negatively charged (DPPC + DPPG) lipids as cell membrane models. The interaction with neutral lipid layer is mainly governed by the overall hydrophobicity of the molecule which is remarkably increased by Cf-conjugation for the most hydrophobic Magainin, Melittin and Transportan. A significantly enhanced membrane affinity was detected in negatively charged lipid model monolayer for all of the peptides since the combination of electrostatic and hydrophobic interaction is active in that case. The Cf-conjugation improved the penetration ability of Penetratin and Dhvar4 suggesting that both the highly charged character (Z/n) and the increased hydrophobicity by Cf-conjugation present important contribution to membrane interaction. This effect might also responsible for the observed high in vitro internalisation rate of Penetratin and Dhvar4, while according to in vitro studies they did not cause damage of cell membrane. From the experiments with the given seven cationic peptides, it can be concluded that the Cf-conjugation alters the degree of membrane interaction of such peptides which are moderately hydrophobic and highly charged.
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