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Cashman-Kadri S, Lagüe P, Subirade M, Fliss I, Beaulieu L. Insights into Molecular Interactions between a GAPDH-Related Fish Antimicrobial Peptide, Analogs Thereof, and Bacterial Membranes. Biochemistry 2024; 63:1257-1269. [PMID: 38683758 PMCID: PMC11112741 DOI: 10.1021/acs.biochem.4c00049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/03/2024] [Accepted: 04/05/2024] [Indexed: 05/02/2024]
Abstract
Interactions between SJGAP (skipjack tuna GAPDH-related antimicrobial peptide) and four analogs thereof with model bacterial membranes were studied using Fourier-transform infrared spectroscopy (FTIR) and molecular dynamics (MD) simulations. MD trajectory analyses showed that the N-terminal segment of the peptide analogs has many contacts with the polar heads of membrane phospholipids, while the central α helix interacts strongly with the hydrophobic core of the membranes. The peptides also had a marked influence on the wave numbers associated with the phase transition of phospholipids organized as liposomes in both the interface and aliphatic chain regions of the infrared spectra, supporting the interactions observed in the MD trajectories. In addition, interesting links were found between peptide interactions with the aliphatic chains of membrane phospholipids, as determined by FTIR and from the MD trajectories, and the membrane permeabilization capacity of these peptide analogs, as previously demonstrated. To summarize, the combined experimental and computational efforts have provided insights into crucial aspects of the interactions between the investigated peptides and bacterial membranes. This work thus makes an original contribution to our understanding of the molecular interactions underlying the antimicrobial activity of these GAPDH-related antimicrobial peptides from Scombridae.
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Affiliation(s)
- Samuel Cashman-Kadri
- Institute
of Nutrition and Functional Foods (INAF), Université Laval, Québec, Québec G1V 0A6, Canada
- Department
of Food Science, Faculty of Agricultural and Food Sciences, Université Laval, Québec, Québec G1V 0A6, Canada
- Québec-Océan, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Patrick Lagüe
- Department
of Biochemistry, Microbiology and Bioinformatics, Faculty of Sciences
and Engineering, Université Laval, Quebec, Québec G1V 0A6, Canada
- Institute
for Integrative Systems Biology, Pavillon Charles-Eugene-Marchand, Université Laval, 1030 Avenue de la Medecine, Québec, Québec G1V 0A6, Canada
- The
Quebec Network for Research on Protein Function, Engineering, and
Applications (PROTEO), Québec, Québec G1V 0A6, Canada
| | - Muriel Subirade
- Institute
of Nutrition and Functional Foods (INAF), Université Laval, Québec, Québec G1V 0A6, Canada
- Department
of Food Science, Faculty of Agricultural and Food Sciences, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Ismail Fliss
- Institute
of Nutrition and Functional Foods (INAF), Université Laval, Québec, Québec G1V 0A6, Canada
- Department
of Food Science, Faculty of Agricultural and Food Sciences, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Lucie Beaulieu
- Institute
of Nutrition and Functional Foods (INAF), Université Laval, Québec, Québec G1V 0A6, Canada
- Department
of Food Science, Faculty of Agricultural and Food Sciences, Université Laval, Québec, Québec G1V 0A6, Canada
- Québec-Océan, Université Laval, Québec, Québec G1V 0A6, Canada
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2
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Dreab A, Bayse CA. The effect of metalation on antimicrobial piscidins imbedded in normal and oxidized lipid bilayers. RSC Chem Biol 2023; 4:573-586. [PMID: 37547452 PMCID: PMC10398361 DOI: 10.1039/d3cb00035d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 06/02/2023] [Indexed: 08/08/2023] Open
Abstract
Metalation of the N-terminal Amino Terminal Cu(ii)- and Ni(ii)-binding (ATCUN) motif may enhance the antimicrobial properties of piscidins. Molecular dynamics simulations of free and nickelated piscidins 1 and 3 (P1 and P3) were performed in 3 : 1 POPC/POPG and 2.6 : 1 : 0.4 POPC/POPG/aldo-PC bilayers (POPC, 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine: POPG, 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoglycerol; aldo-PC, 1-palmitoyl-2-(9'-oxo-nonanoyl)-sn-glycero-3-phosphocholine) bilayer models. Nickel(ii) binding decreases the conformation dynamics of the ATCUN motif and lowers the charge of the N-terminus to allow it to embed deeper in the bilayer without significantly changing the overall depth due to interactions of the charged half-helix of the peptide with the headgroups. Phe1⋯Ni2+ cation-π and Phe2-Phe1 CH-π interactions contribute to a small fraction of structures within the nickelated P1 simulations and may partially protect a bound metal from metal-centered chemical activity. The substitution of Phe2 for Ile2 in P3 sterically blocks conformations with cation-π interactions offering less protection to the metal. This difference between metalated P1 and P3 may indicate a mechanism by which peptide sequence can influence antimicrobial properties. Any loss of bilayer integrity due to chain reversal of the oxidized phospholipid chains of aldo-PC may be enhanced in the presence of metalated piscidins.
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Affiliation(s)
- Ana Dreab
- Department of Chemistry and Biochemistry, Old Dominion University Norfolk VA 23529 USA
| | - Craig A Bayse
- Department of Chemistry and Biochemistry, Old Dominion University Norfolk VA 23529 USA
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3
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Ghodsi Z, Kalbassi MR, Farzaneh P, Mobarez AM, Beemelmanns C, Amiri Moghaddam J. Immunomodulatory function of antimicrobial peptide EC-Hepcidin1 modulates the induction of inflammatory gene expression in primary cells of Caspian Trout (Salmo trutta caspius Kessler, 1877). FISH & SHELLFISH IMMUNOLOGY 2020; 104:55-61. [PMID: 32473358 DOI: 10.1016/j.fsi.2020.05.067] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 05/08/2020] [Accepted: 05/25/2020] [Indexed: 06/11/2023]
Abstract
Hepcidins, a group of antimicrobial peptides (AMPs), play a key role in the innate immune system of fishes and act against different pathogens. In this study, antimicrobial and immune-inflammatory activity of a synthetic EC-hepcidin1, previously identified from orange-spotted grouper, were evaluated. EC-hepcidin1 showed weak activity against the zoonotic fish pathogen Streptococcus iniae (MIC 100 μg mL-1 and MBC 150 μg mL-1). To study the effect of AMPs in general, and EC-hepcidin1 in particular, a primary cell culture (SC) from the fin tissue of the Caspian Trout (Salmo trutta caspius) was established. The neutral Red method on SC cells revealed that EC-hepcidin1 has no or very low cytotoxic properties. Treatment of cells with either EC-hepcidin1 (150 μg mL-1) or fish pathogen Streptococcus iniae (MOI = 10) and a mixture of both resulted in the up-regulation of gene expression of MHC-UBA, IL-6, and TNFα indicating the modulatory function on inflammatory processes. These findings indicate that EC-hepcidin1 might act as a candidate for modulation of the innate immune system in S. iniae-based infection.
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Affiliation(s)
- Zohreh Ghodsi
- Department of Aquaculture, Marine Sciences Faculty, Tarbiat Modares University, Tehran, Iran
| | - Mohammad Reza Kalbassi
- Department of Aquaculture, Marine Sciences Faculty, Tarbiat Modares University, Tehran, Iran.
| | - Parvaneh Farzaneh
- Human and Animal Cell Bank, Iranian Biological Resource Center, ACECR, Tehran, Iran
| | - Ashraf Mohebati Mobarez
- Department of Bacteriology, Medical Sciences Faculty, Tarbiat Modares University, Tehran, Iran
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology e.V. Hans-Knöll-Institute (HKI), Jena, Germany
| | - Jamshid Amiri Moghaddam
- Leibniz Institute for Natural Product Research and Infection Biology e.V. Hans-Knöll-Institute (HKI), Jena, Germany.
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4
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Lei Z, Liu Q, Zhu Q, Yang B, Khaliq H, Sun A, Qi Y, Moku GK, Su Y, Wang J, Cao J, He Q. Comparative Pharmacokinetics and Preliminary Pharmacodynamics Evaluation of Piscidin 1 Against PRV and PEDV in Rats. Front Chem 2018; 6:244. [PMID: 29988520 PMCID: PMC6026642 DOI: 10.3389/fchem.2018.00244] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 06/06/2018] [Indexed: 01/14/2023] Open
Abstract
Antimicrobial peptide (Piscidin-1) is an effective natural polypeptide, which has great influence and potential on porcine epidemic diarrhea virus (PEDV) and pseudorabies virus (PRV). As an alternative antibiotic substitute, Piscidin-1 was subjected for pharmacokinetics study with three administration routes (i.v, i.m, and p.o) after a single dose of 2 mg/kg in rats and preliminary pharmacodynamics including antiviral activity in cell against PEDV and PRV. Based on 50 percent tissue culture infective dose (TCID50), there were about 2 and 10% virus survived ratios for Piscidin-1 against PRV and PEDV, respectively. The plaque test showed 1 and 2 μg/ml Piscidin-1 could eliminate 95% PRV and 85% PEDV, respectively. The main pharmacokinetics parameters of Cmax, AUC0−∞, Ke, t1/2, Tmax, MRT, and Clb in plasma were not applicable value, 25.9 μg*h/ml, 0.041 h−1, 16.97 h, not available value, 22.77 h, 0.067 L/h*kg after i.v administration, 2.37 μg/ml, 18.95 μg*h/ml, 0.029 h−1, 23.50 h, 0.33 h, 30.12 h, 0.095 L/h*kg after i.m administration and 0.73 μg/ml, 9.63 μg*h/ml, 0.036 h−1, 19.46 h, 0.50 h, 26.76 h, 0.171 L/h*kg after p.o administration. The bioavailability values after i.m and p.o administrations were calculated as 73.17 and 37.18%, respectively. The i.m administration was selected for pharmacokinetics study in ileum content against PEDV. The main pharmacokinetic parameters of Cmax, AUC0−∞, Ke, t1/2, Tmax, MRT, and Clb in ileum content were 1.67 μg/ml, 78.40 μg*h/ml, 0.034 h−1, 20.16 h, 8.12 h, 36.45 h, 0.026 L/h*kg. The Cmax values in plasma (2.37 μg/ml) and ileum content (1.67 μg/ml) were higher than the effective inhibitory concentration determined in the plaque test, and this indicates that Piscidin-1 might have effective inhibition effect against PRV and PEDV after administration of 2 mg/kg i.m. The results of this study represent the first investigations toward the pharmacokinetic characteristics of piscidin-1 in plasma upon three different administration routes, among which i.m. resulted in the highest bioavailability (73.17%). Furthermore, the pharmacokinetics study of ileum content indicated Piscidin-1 might have good effect against PEDV and could be regarded as an alternative antibiotic in clinical veterinary in the future study.
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Affiliation(s)
- Zhixin Lei
- State Key Laboratory of Agriculture Microbiology, College of Veterinary Medicine, Huazhong Agriculture University, Wuhan, China.,Department of Veterinary Pharmacology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,National Reference Laboratory of Veterinary Drug Residues and MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agriculture University, Wuhan, China.,Department of Pharmaceutics, University of Minnesota, Minneapolis, MN, United States
| | - Qianying Liu
- State Key Laboratory of Agriculture Microbiology, College of Veterinary Medicine, Huazhong Agriculture University, Wuhan, China.,Department of Veterinary Pharmacology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,National Reference Laboratory of Veterinary Drug Residues and MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agriculture University, Wuhan, China
| | - Qianqian Zhu
- State Key Laboratory of Agriculture Microbiology, College of Veterinary Medicine, Huazhong Agriculture University, Wuhan, China.,Department of Veterinary Pharmacology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Bing Yang
- State Key Laboratory of Agriculture Microbiology, College of Veterinary Medicine, Huazhong Agriculture University, Wuhan, China.,Department of Veterinary Pharmacology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Haseeb Khaliq
- State Key Laboratory of Agriculture Microbiology, College of Veterinary Medicine, Huazhong Agriculture University, Wuhan, China
| | - Ao Sun
- State Key Laboratory of Agriculture Microbiology, College of Veterinary Medicine, Huazhong Agriculture University, Wuhan, China.,Department of Veterinary Pharmacology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Yi Qi
- State Key Laboratory of Agriculture Microbiology, College of Veterinary Medicine, Huazhong Agriculture University, Wuhan, China
| | - Gopi Krishna Moku
- Department of Pharmaceutics, University of Minnesota, Minneapolis, MN, United States
| | - Yafan Su
- Department of Pharmaceutics, University of Minnesota, Minneapolis, MN, United States
| | - Jiawei Wang
- Department of Pharmaceutics, University of Minnesota, Minneapolis, MN, United States
| | - Jiyue Cao
- Department of Veterinary Pharmacology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,National Reference Laboratory of Veterinary Drug Residues and MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agriculture University, Wuhan, China
| | - Qigai He
- State Key Laboratory of Agriculture Microbiology, College of Veterinary Medicine, Huazhong Agriculture University, Wuhan, China
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5
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Folding a viral peptide in different membrane environments: pathway and sampling analyses. J Biol Phys 2018; 44:195-209. [PMID: 29644513 DOI: 10.1007/s10867-018-9490-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 03/16/2018] [Indexed: 10/17/2022] Open
Abstract
Flock House virus (FHV) is a well-characterized model system to study infection mechanisms in non-enveloped viruses. A key stage of the infection cycle is the disruption of the endosomal membrane by a component of the FHV capsid, the membrane active γ peptide. In this study, we perform all-atom molecular dynamics simulations of the 21 N-terminal residues of the γ peptide interacting with membranes of differing compositions. We carry out umbrella sampling calculations to study the folding of the peptide to a helical state in homogenous and heterogeneous membranes consisting of neutral and anionic lipids. From the trajectory data, we evaluate folding energetics and dissect the mechanism of folding in the different membrane environments. We conclude the study by analyzing the extent of configurational sampling by performing time-lagged independent component analysis.
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6
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Su X, Zhou X, Tan Z, Zhou C. Highly efficient antibacterial diblock copolypeptides based on lysine and phenylalanine. Biopolymers 2017; 107. [DOI: 10.1002/bip.23041] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/26/2017] [Accepted: 07/31/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Xiaokai Su
- School of Materials Science and Engineering; Tongji University, 4800 Caoan Road; Shanghai 201804 China
| | - Xinyu Zhou
- School of Materials Science and Engineering; Tongji University, 4800 Caoan Road; Shanghai 201804 China
| | - Zhengzhong Tan
- School of Materials Science and Engineering; Tongji University, 4800 Caoan Road; Shanghai 201804 China
| | - Chuncai Zhou
- School of Materials Science and Engineering; Tongji University, 4800 Caoan Road; Shanghai 201804 China
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7
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Ma H, Cummins DD, Edelstein NB, Gomez J, Khan A, Llewellyn MD, Picudella T, Willsey SR, Nangia S. Modeling Diversity in Structures of Bacterial Outer Membrane Lipids. J Chem Theory Comput 2017; 13:811-824. [DOI: 10.1021/acs.jctc.6b00856] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Huilin Ma
- Department of Biomedical
and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
| | - Daniel D. Cummins
- Department of Biomedical
and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
| | - Natalie Brooke Edelstein
- Department of Biomedical
and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
| | - Jerry Gomez
- Department of Biomedical
and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
| | - Aliza Khan
- Department of Biomedical
and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
| | - Masud Dikita Llewellyn
- Department of Biomedical
and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
| | - Tara Picudella
- Department of Biomedical
and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
| | - Sarah Rose Willsey
- Department of Biomedical
and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
| | - Shikha Nangia
- Department of Biomedical
and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States
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8
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Di Meo F, Fabre G, Berka K, Ossman T, Chantemargue B, Paloncýová M, Marquet P, Otyepka M, Trouillas P. In silico pharmacology: Drug membrane partitioning and crossing. Pharmacol Res 2016; 111:471-486. [PMID: 27378566 DOI: 10.1016/j.phrs.2016.06.030] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 06/30/2016] [Accepted: 06/30/2016] [Indexed: 01/09/2023]
Abstract
Over the past decade, molecular dynamics (MD) simulations have become particularly powerful to rationalize drug insertion and partitioning in lipid bilayers. MD simulations efficiently support experimental evidences, with a comprehensive understanding of molecular interactions driving insertion and crossing. Prediction of drug partitioning is discussed with respect to drug families (anesthetics; β-blockers; non-steroidal anti-inflammatory drugs; antioxidants; antiviral drugs; antimicrobial peptides). To accurately evaluate passive permeation coefficients turned out to be a complex theoretical challenge; however the recent methodological developments based on biased MD simulations are particularly promising. Particular attention is paid to membrane composition (e.g., presence of cholesterol), which influences drug partitioning and permeation. Recent studies concerning in silico models of membrane proteins involved in drug transport (influx and efflux) are also reported here. These studies have allowed gaining insight in drug efflux by, e.g., ABC transporters at an atomic resolution, explicitly accounting for the mandatory forces induced by the surrounded lipid bilayer. Large-scale conformational changes were thoroughly analyzed.
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Affiliation(s)
- Florent Di Meo
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France
| | - Gabin Fabre
- LCSN, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France
| | - Karel Berka
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic
| | - Tahani Ossman
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France
| | - Benjamin Chantemargue
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France; Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic
| | - Markéta Paloncýová
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic
| | - Pierre Marquet
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France
| | - Michal Otyepka
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic
| | - Patrick Trouillas
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France; Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic.
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9
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Duan X, Zhang M, Zhang X, Wang F, Lei M. Molecular modeling and docking study on dopamine D2-like and serotonin 5-HT2A receptors. J Mol Graph Model 2015; 57:143-55. [DOI: 10.1016/j.jmgm.2015.01.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 01/23/2015] [Accepted: 01/29/2015] [Indexed: 01/22/2023]
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10
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Lee E, Shin A, Jeong KW, Jin B, Jnawali HN, Shin S, Shin SY, Kim Y. Role of phenylalanine and valine10 residues in the antimicrobial activity and cytotoxicity of piscidin-1. PLoS One 2014; 9:e114453. [PMID: 25473836 PMCID: PMC4256409 DOI: 10.1371/journal.pone.0114453] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Accepted: 11/07/2014] [Indexed: 11/18/2022] Open
Abstract
Piscidin-1 (Pis-1) is a linear antibacterial peptide derived from mast cells of aquacultured hybrid striped bass that comprises 22 amino acids with a phenylalanine-rich amino-terminus. Pis-1 exhibits potent antibacterial activity against pathogens but is not selective for distinguishing between bacterial and mammalian cells. To determine the key residues for its antibacterial activity and those for its cytotoxicity, we investigated the role of each Phe residue near the N-terminus as well as the Val10 residue located near the boundary of the hydrophobic and hydrophilic sectors of the helical wheel diagram. Fluorescence dye leakage and tryptophan fluorescence experiments were used to study peptide-lipid interactions, showing comparable depths of insertion of substituted peptides in different membranes. Phe2 was found to be the most deeply inserted phenylalanine in both bacterial- and mammalian-mimic membranes. Each Phe was substituted with Ala or Lys to investigate its functional role. Phe2 plays key roles in the cytotoxicity as well as the antibacterial activities of Pis-1, and Phe6 is essential for the antibacterial activities of Pis-1. We also designed and synthesized a piscidin analog, Pis-V10K, in which Lys was substituted for Val10, resulting in an elevated amphipathic α-helical structure. Pis-V10K showed similar antibacterial activity (average minimum inhibitory concentration (MIC) = 1.6 µM) to Pis-1 (average MIC = 1.5 µM). However, it exhibited much lower cytotoxicity than Pis-1. Lys10-substituted analogs, Pis-F1K/V10K, Pis-F2K/V10K, and Pis-F6K/V10K in which Lys was substituted for Phe retained antibacterial activity toward standard and drug-resistant bacterial strains with novel bacterial cell selectivity. They exert anti-inflammatory activities via inhibition of nitric oxide production, TNF-α secretion, and MIP-1 and MIP-2 production. They may disrupt the binding of LPS to toll-like receptors, eventually suppressing MAPKs-mediated signaling pathways. These peptides may be good candidates for the development of peptide antibiotics with potent antibacterial activity but without cytotoxicity.
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Affiliation(s)
- Eunjung Lee
- Department of Bioscience and Biotechnology, Bio-Molecular Informatics Center, Konkuk University, Seoul, Korea
| | - Areum Shin
- Department of Bioscience and Biotechnology, Bio-Molecular Informatics Center, Konkuk University, Seoul, Korea
| | - Ki-Woong Jeong
- Department of Bioscience and Biotechnology, Bio-Molecular Informatics Center, Konkuk University, Seoul, Korea
| | - Bongwhan Jin
- Department of Bioscience and Biotechnology, Bio-Molecular Informatics Center, Konkuk University, Seoul, Korea
| | - Hum Nath Jnawali
- Department of Bioscience and Biotechnology, Bio-Molecular Informatics Center, Konkuk University, Seoul, Korea
| | - Soyoung Shin
- Department of Bioscience and Biotechnology, Bio-Molecular Informatics Center, Konkuk University, Seoul, Korea
| | - Song Yub Shin
- Research Center for Proteineous Materials and Department of Cellular & Molecular Medicine, School of Medicine, Chosun University, Gwangju, Korea
| | - Yangmee Kim
- Department of Bioscience and Biotechnology, Bio-Molecular Informatics Center, Konkuk University, Seoul, Korea
- * E-mail:
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11
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Khatami MH, Bromberek M, Saika-Voivod I, Booth V. Molecular dynamics simulations of histidine-containing cod antimicrobial peptide paralogs in self-assembled bilayers. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:2778-87. [DOI: 10.1016/j.bbamem.2014.07.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Revised: 07/10/2014] [Accepted: 07/14/2014] [Indexed: 01/24/2023]
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12
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Cao H, Deng L, Lei M, Wang F, Tan T. The role of temperature and solvent microenvironment on the activity of Yarrowia lipolytica Lipase 2: Insights from molecular dynamics simulation. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.08.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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