1
|
Braik A, Serna-Duque JA, Nefzi A, Aroui S, Esteban MÁ. Potential therapeutic use of dermaseptin S4 from the frog Phyllomedusa sauvagii and its derivatives against bacterial pathogens in fish. J Appl Microbiol 2024; 135:lxae222. [PMID: 39187398 DOI: 10.1093/jambio/lxae222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 07/29/2024] [Accepted: 08/23/2024] [Indexed: 08/28/2024]
Abstract
AIM Dermaseptins are one of the main families of antimicrobial peptides (AMPs) derived from the skin secretions of Hylidae frogs. Among them, dermaseptin S4 (DS4) is characterized by its broad-spectrum of activity against bacteria, protozoa, and fungi. In this study, the physicochemical properties of the native peptide DS4 (1-28) and two derivatives [DS4 (1-28)a and DS4 (1-26)a] isolated from the skin of the frog Phyllomedusa sauvagii were investigated and their antimicrobial properties against two marine pathogenic bacteria (Vibrio harveyi and Vibrio anguillarum) were examined. METHODS AND RESULTS The results indicate that the peptide DS4 (1-26)a has high-antibacterial activity against the tested strains and low-hemolytic activity (<30% lysis at the highest tested concentration of 100 µg/mL) compared to the other two peptides tested. In addition, all three peptides affect the membrane and cell wall integrity of both pathogenic bacteria, causing leakage of cell contents, with DS4 (1-26)a having the most severe impact. These skills were corroborated by transmission electron microscopy and by the variation of cations in their binding sites due to the effects caused by the AMPs. CONCLUSIONS These results suggest that DS4 and its derivatives, in particular the truncated and amidated peptide DS4 (1-26)a could be effective in the treatment of infections caused by these marine pathogenic bacteria. Future studies are required to validate the use of DS4 in vivo for the prevention of bacterial diseases in fish.
Collapse
Affiliation(s)
- Afef Braik
- Research Unit of Analysis and Process Applied on The Environment- APAE (UR17ES32) Higher Institute of Applied Sciences and Technology of Mahdia, University of Monastir, Monastir 5019, Tunisia
| | - John Alberto Serna-Duque
- Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, Immunobiology for Aquaculture Group, Murcia 30100, Spain
| | - Adel Nefzi
- Florida International University, Port St. Lucie, FL 34987, USA
| | - Sonia Aroui
- Laboratory of Biochemistry, Research Unit: UR 12ES08 "Cell Signaling and Pathologies", Faculty of Medicine of Monastir, University of Monastir, Monastir 5019, Tunisia
| | - María Ángeles Esteban
- Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, Immunobiology for Aquaculture Group, Murcia 30100, Spain
| |
Collapse
|
2
|
Haddad H, Tangy F, Ouahchi I, Sahtout W, Ouni B, Zaïri A. Evaluation of the antiviral activity of new dermaseptin analogs against Zika virus. Biochem Biophys Rep 2024; 39:101747. [PMID: 38939125 PMCID: PMC11208914 DOI: 10.1016/j.bbrep.2024.101747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/29/2024] Open
Abstract
Zika virus represents the primary cause of infection during pregnancy and can lead to various neurological disorders such as microcephaly and Guillain-Barré syndrome affecting both children and adults. This infection is also associated with urological and nephrological problems. So far, evidence of mosquito-borne Zika virus infection has been reported in a total of 89 countries and territories. However, surveillance efforts primarily concentrate on outbreaks that this virus can cause, yet the measures implemented are typically limited. Currently, there are no specific treatments or vaccines designed for the prevention or treatment of Zika virus infection or its associated disease. The development of effective therapeutic agents presents an urgent need. Importantly, an alternative for advancing the discovery of new molecules could be dermaseptins, a family of antimicrobial peptides known for their potential antiviral properties. In this study, we carried out the synthesis of dermaseptins and their analogs and subsequently assessed the bioactivity tests against Zika virus (ZIKV PF13) of dermaseptins B2 and S4 and their derivatives. The cytotoxicity of these peptides was investigated on HMC3 cell line and HeLa cells by CellTiter-Glo® Luminescent Cell Viability Assay. Thereafter, we evaluated the antiviral activity caused by the action of our dermaseptins on the viral envelope using the Fluorescence Activated Cell Sorting (FACS). The cytotoxicity of our molecules was concentration-dependent at microgram concentrations Expect for dermaseptin B2 and its derivative which present no toxicity against HeLa and HMC3 cell lines. It was observed that all tested analogs from S4 family exhibited antiviral activity with low concentrations ranging from 3 to 12.5 μg/ml , unlike the native B2 and its derivative which increased the infectivity. Pre-incubating of dermaseptins with ZIKV PF13 before infection revealed that these derivatives inhibit the initial stages of virus infection. In summary, these results suggest that dermaseptins could serve as novel lead structures for the development of potent antiviral agents against Zika virus infections.
Collapse
Affiliation(s)
- Houda Haddad
- BIOLIVAL Laboratory, LR14ES06, The Higher Institute of Biotechnology of Monastir ISBM, University of Monastir, Monastir, 5000, Tunisia
- Biochemistry Department, Faculty of Medicine, University of Sousse, Sousse, 4002, Tunisia
| | - Frédéric Tangy
- Institut Pasteur, Université Paris Cité, Vaccines-innovation Laboratory, 75015, Paris, France
| | - Ines Ouahchi
- Cytogenetics and Reproductive Biology department, Farhat Hached University Teaching Hospital, University of Sousse, 4000, Sousse, Tunisia
| | - Wissal Sahtout
- Nephrology Department, Sahloul University Hospital, University of Sousse, 4054, Sousse, Tunisia
- Research Laboratory LR12SP11, Biochemistry Department, Sahloul University Hospital, University of Sousse, 4054, Sousse, Tunisia
| | - Bouraoui Ouni
- Pharmacology Department, Faculty of Medicine, University of Sousse, 4002, ousse, Tunisia
| | - Amira Zaïri
- Biochemistry Department, Faculty of Medicine, University of Sousse, Sousse, 4002, Tunisia
| |
Collapse
|
3
|
Brango-Vanegas J, Leite ML, Macedo MLR, Cardoso MH, Franco OL. Capping motifs in antimicrobial peptides and their relevance for improved biological activities. Front Chem 2024; 12:1382954. [PMID: 38873409 PMCID: PMC11169826 DOI: 10.3389/fchem.2024.1382954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 05/13/2024] [Indexed: 06/15/2024] Open
Abstract
N-capping (N-cap) and C-capping (C-cap) in biologically active peptides, including specific amino acids or unconventional group motifs, have been shown to modulate activity against pharmacological targets by interfering with the peptide's secondary structure, thus generating unusual scaffolds. The insertion of capping motifs in linear peptides has been shown to prevent peptide degradation by reducing its susceptibility to proteolytic cleavage, and the replacement of some functional groups by unusual groups in N- or C-capping regions in linear peptides has led to optimized peptide variants with improved secondary structure and enhanced activity. Furthermore, some essential amino acid residues that, when placed in antimicrobial peptide (AMP) capping regions, are capable of complexing metals such as Cu2+, Ni2+, and Zn2+, give rise to the family known as metallo-AMPs, which are capable of boosting antimicrobial efficacy, as well as other activities. Therefore, this review presents and discusses the different strategies for creating N- and C-cap motifs in AMPs, aiming at fine-tuning this class of antimicrobials.
Collapse
Affiliation(s)
- José Brango-Vanegas
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
| | - Michel Lopes Leite
- Departamento de Biologia Molecular, Instituto de Ciências Biológicas, Universidade de Brasília, Campus Darcy Ribeiro, Brasília, Brazil
| | - Maria L. R. Macedo
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, Universidade Federal de Mato Grosso do Sul, Cidade Universitária, Campo Grande, Brazil
| | - Marlon H. Cardoso
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
- Laboratório de Purificação de Proteínas e suas Funções Biológicas, Universidade Federal de Mato Grosso do Sul, Cidade Universitária, Campo Grande, Brazil
| | - Octávio Luiz Franco
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
| |
Collapse
|
4
|
Bhat RAH, Khangembam VC, Pant V, Tandel RS, Pandey PK, Thakuria D. Antibacterial activity of a short de novo designed peptide against fish bacterial pathogens. Amino Acids 2024; 56:28. [PMID: 38578302 PMCID: PMC10997546 DOI: 10.1007/s00726-024-03388-4] [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: 07/14/2023] [Accepted: 03/06/2024] [Indexed: 04/06/2024]
Abstract
In the face of increasing antimicrobial resistance in aquaculture, researchers are exploring novel substitutes to customary antibiotics. One potential solution is the use of antimicrobial peptides (AMPs). We aimed to design and evaluate a novel, short, and compositionally simple AMP with potent activity against various bacterial pathogens in aquaculture. The resulting peptide, KK12YW, has an amphipathic nature and net charge of + 7. Molecular docking experiments disclosed that KK12YW has a strong affinity for aerolysin, a virulence protein produced by the bacterial pathogen Aeromonas sobria. KK12YW was synthesized using Fmoc chemistry and tested against a range of bacterial pathogens, including A. sobria, A. salmonicida, A. hydrophila, Edwardsiella tarda, Vibrio parahaemolyticus, Pseudomonas aeruginosa, Escherichia coli, Staphylococcus epidermidis, and methicillin-resistant S. aureus. The AMP showed promising antibacterial activity, with MIC and MBC values ranging from 0.89 to 917.1 µgmL-1 and 3.67 to 1100.52 µgmL-1, respectively. In addition, KK12YW exhibited resistance to high temperatures and remained effective even in the presence of serum and salt, indicating its stability. The peptide also demonstrated minimal hemolysis toward fish RBCs, even at higher concentrations. Taken together, these findings indicate that KK12YW could be a highly promising and viable substitute for conventional antibiotics to combat microbial infections in aquaculture.
Collapse
Affiliation(s)
| | - Victoria C Khangembam
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, 263136, Uttarakhand, India
| | - Vinita Pant
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, 263136, Uttarakhand, India
| | - Ritesh Shantilal Tandel
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, 263136, Uttarakhand, India
- Navsari Gujarat Research Centre, ICAR-Central Institute of Brackishwater Aquaculture, Navsari, 396 450, Gujarat, India
| | - Pramod Kumar Pandey
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, 263136, Uttarakhand, India
| | - Dimpal Thakuria
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, 263136, Uttarakhand, India.
| |
Collapse
|
5
|
Haddad H, Mejri R, de Araujo AR, Zaïri A. Evaluation of the Antibacterial Activity of New Dermaseptin Derivatives against Acinetobacter baumannii. Pharmaceuticals (Basel) 2024; 17:171. [PMID: 38399385 PMCID: PMC10892451 DOI: 10.3390/ph17020171] [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: 12/26/2023] [Revised: 01/06/2024] [Accepted: 01/17/2024] [Indexed: 02/25/2024] Open
Abstract
Nosocomial infections represent one of the biggest health problems nowadays. Acinetobacter baumannii is known as an opportunistic pathogen in humans, affecting people with compromised immune systems, and is becoming increasingly important as a hospital-derived infection. It is known that in recent years, more and more bacteria have become multidrug-resistant (MDR) and, for this reason, the development of new drugs is a priority. However, these products must not affect the human body, and therefore, cytotoxicity studies are mandatory. In this context, antimicrobial peptides with potential antibacterial proprieties could be an alternative. In this research, we describe the synthesis and the bioactivity of dermaseptins and their derivatives against Acinetobacter baumannii. The cytotoxicity of these compounds was investigated on the HEp-2 cell line by MTT cell viability assay. Thereafter, we studied the morphological alterations caused by the action of one of the active peptides on the bacterial membrane using atomic force microscopy (AFM). The cytotoxicity of dermaseptins was concentration-dependent at microgram concentrations. It was observed that all tested analogs exhibited antibacterial activity with Minimum Inhibitory Concentrations (MICs) ranging from 3.125 to 12.5 μg/mL and Minimum Bactericidal Concentrations (MBCs) ranging from 6.25 to 25 μg/mL. Microscopic images obtained by AFM revealed morphological changes on the surface of the treated bacteria caused by K4S4(1-16), as well as significant surface alterations. Overall, these findings demonstrate that dermaseptins might constitute new lead structures for the development of potent antibacterial agents against Acinetobacter baumannii infections.
Collapse
Affiliation(s)
- Houda Haddad
- BIOLIVAL Laboratory, LR14ES06, The Higher Institute of Biotechnology of Monastir ISBM, University of Monastir, Monastir 5000, Tunisia;
- Biochemistry Department, LR18ES47, Faculty of Medicine, University of Sousse, Sousse 4002, Tunisia;
| | - Radhia Mejri
- Biochemistry Department, LR18ES47, Faculty of Medicine, University of Sousse, Sousse 4002, Tunisia;
| | - Alyne Rodrigues de Araujo
- Biodiversity and Biotechnology Research Center, BIOTEC, Federal University of Piauí, Parnaíba 64202-020, PI, Brazil;
| | - Amira Zaïri
- Biochemistry Department, LR18ES47, Faculty of Medicine, University of Sousse, Sousse 4002, Tunisia;
| |
Collapse
|
6
|
Dennison SR, Morton LH, Badiani K, Harris F, Phoenix DA. Bacterial susceptibility and resistance to modelin-5. SOFT MATTER 2023; 19:8247-8263. [PMID: 37869970 DOI: 10.1039/d3sm01007d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
Modelin-5 (M5-NH2) killed Pseudomonas aeruginosa with a minimum lethal concentration (MLC) of 5.86 μM and strongly bound its cytoplasmic membrane (CM) with a Kd of 23.5 μM. The peptide adopted high levels of amphiphilic α-helical structure (75.0%) and penetrated the CM hydrophobic core (8.0 mN m-1). This insertion destabilised CM structure via increased lipid packing and decreased fluidity (ΔGmix < 0), which promoted high levels of lysis (84.1%) and P. aeruginosa cell death. M5-NH2 showed a very strong affinity (Kd = 3.5 μM) and very high levels of amphiphilic α-helical structure with cardiolipin membranes (96.0%,) which primarily drove the peptide's membranolytic action against P. aeruginosa. In contrast, M5-NH2 killed Staphylococcus aureus with an MLC of 147.6 μM and weakly bound its CM with a Kd of 117.6 μM, The peptide adopted low levels of amphiphilic α-helical structure (35.0%) and only penetrated the upper regions of the CM (3.3 mN m-1). This insertion stabilised CM structure via decreased lipid packing and increased fluidity (ΔGmix > 0) and promoted only low levels of lysis (24.3%). The insertion and lysis of the S. aureus CM by M5-NH2 showed a strong negative correlation with its lysyl phosphatidylglycerol (Lys-PG) content (R2 > 0.98). In combination, these data suggested that Lys-PG mediated mechanisms inhibited the membranolytic action of M5-NH2 against S. aureus, thereby rendering the organism resistant to the peptide. These results are discussed in relation to structure/function relationships of M5-NH2 and CM lipids that underpin bacterial susceptibility and resistance to the peptide.
Collapse
Affiliation(s)
- Sarah R Dennison
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston PR1 2HE, UK.
| | - Leslie Hg Morton
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston PR1 2HE, UK.
| | - Kamal Badiani
- Pepceuticals Limited, 4 Feldspar Close, Warrens Park, Enderby, Leicestershire, LE19 4JS, UK
| | - Frederick Harris
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston PR1 2HE, UK.
| | - David A Phoenix
- Office of the Vice Chancellor, London South Bank University, 103 Borough Road, London SE1 0AA, UK
| |
Collapse
|
7
|
Alsaab FM, Dean SN, Bobde S, Ascoli GG, van Hoek ML. Computationally Designed AMPs with Antibacterial and Antibiofilm Activity against MDR Acinetobacter baumannii. Antibiotics (Basel) 2023; 12:1396. [PMID: 37760693 PMCID: PMC10525135 DOI: 10.3390/antibiotics12091396] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/28/2023] [Accepted: 08/30/2023] [Indexed: 09/29/2023] Open
Abstract
The discovery of new antimicrobials is necessary to combat multidrug-resistant (MDR) bacteria, especially those that infect wounds and form prodigious biofilms, such as Acinetobacter baumannii. Antimicrobial peptides (AMPs) are a promising class of new therapeutics against drug-resistant bacteria, including gram-negatives. Here, we utilized a computational AMP design strategy combining database filtering technology plus positional analysis to design a series of novel peptides, named HRZN, designed to be active against A. baumannii. All of the HRZN peptides we synthesized exhibited antimicrobial activity against three MDR A. baumannii strains with HRZN-15 being the most active (MIC 4 µg/mL). This peptide also inhibited and eradicated biofilm of A. baumannii strain AB5075 at 8 and 16 µg/mL, which is highly effective. HRZN-15 permeabilized and depolarized the membrane of AB5075 rapidly, as demonstrated by the killing kinetics. HRZN 13 and 14 peptides had little to no hemolysis activity against human red blood cells, whereas HRZN-15, -16, and -17 peptides demonstrated more significant hemolytic activity. HRZN-15 also demonstrated toxicity to waxworms. Further modification of HRZN-15 could result in a new peptide with an improved toxicity profile. Overall, we successfully designed a set of new AMPs that demonstrated activity against MDR A. baumannii using a computational approach.
Collapse
Affiliation(s)
- Fahad M. Alsaab
- School of Systems Biology, George Mason University, Manassas, VA 20110, USA (S.B.)
- College of Applied Medical Sciences, King Saud bin Abdulaziz University for Health Sciences, Al Ahsa 36428, Saudi Arabia
| | - Scott N. Dean
- Center for Bio/Molecular Science and Engineering, U.S. Naval Research Laboratory, Washington, DC 20375, USA
| | - Shravani Bobde
- School of Systems Biology, George Mason University, Manassas, VA 20110, USA (S.B.)
| | - Gabriel G. Ascoli
- Aspiring Scientist Summer Internship Program, George Mason University, Manassas, VA 20110, USA
| | - Monique L. van Hoek
- School of Systems Biology, George Mason University, Manassas, VA 20110, USA (S.B.)
- Center for Infectious Disease Research, George Mason University, Manassas, VA 20110, USA
| |
Collapse
|
8
|
Wang X, Yang X, Wang Q, Meng D. Unnatural amino acids: promising implications for the development of new antimicrobial peptides. Crit Rev Microbiol 2023; 49:231-255. [PMID: 35254957 DOI: 10.1080/1040841x.2022.2047008] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The increasing incidence and rapid spread of bacterial resistance to conventional antibiotics are a serious global threat to public health, highlighting the need to develop new antimicrobial alternatives. Antimicrobial peptides (AMPs) represent a class of promising natural antibiotic candidates due to their broad-spectrum activity and low tendency to induce resistance. However, the development of AMPs for medical use is hampered by several obstacles, such as moderate activity, lability to proteolytic degradation, and low bioavailability. To date, many researchers have focussed on the optimization or design of novel artificial AMPs with desired properties. Unnatural amino acids (UAAs) are valuable building blocks in the manufacture of a variety of pharmaceuticals, and have been used to develop artificial AMPs with specific structural and physicochemical properties. Rational incorporation of UAAs has become a very promising approach to endow AMPs with strong and long-lasting activity but no toxicity. This review aims to summarize key approaches that have been used to incorporate UAAs to develop novel AMPs with improved properties and better performance. It is anticipated that this review will guide future design considerations for UAA-based antimicrobial applications.
Collapse
Affiliation(s)
- Xiuhong Wang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, People's Republic of China
| | - Xiaomin Yang
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, People's Republic of China
| | - Qiaoe Wang
- Key Laboratory of Cosmetic, China National Light Industry, Beijing Technology and Business University, Beijing, People's Republic of China
| | - Demei Meng
- State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, People's Republic of China.,Tianjin Gasin-DH Preservation Technology Co., Ltd, Tianjin, People's Republic of China
| |
Collapse
|
9
|
Duque HM, Rodrigues G, Santos LS, Franco OL. The biological role of charge distribution in linear antimicrobial peptides. Expert Opin Drug Discov 2023; 18:287-302. [PMID: 36720196 DOI: 10.1080/17460441.2023.2173736] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Antimicrobial peptides (AMP) have received particular attention due to their capacity to kill bacteria. Although much is known about them, peptides are currently being further researched. A large number of AMPs have been discovered, but only a few have been approved for topical use, due to their promiscuity and other challenges, which need to be overcome. AREAS COVERED AMPs are diverse in structure. Consequently, they have varied action mechanisms when targeting microorganisms or eukaryotic cells. Herein, the authors focus on linear peptides, particularly those that are alpha-helical structured, and examine how their charge distribution and hydrophobic amino acids could modulate their biological activity. EXPERT OPINION The world currently needs urgent solutions to the infective problems caused by resistant pathogens. In order to start the race for antimicrobial development from the charge distribution viewpoint, bioinformatic tools will be necessary. Currently, there is no software available that allows to discriminate charge distribution in AMPs and predicts the biological effects of this event. Furthermore, there is no software available that predicts the side-chain length of residues and its role in biological functions. More specialized software is necessary.
Collapse
Affiliation(s)
- Harry Morales Duque
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, PC: (CEP) 70.790-160, Brasília-DF, Brazil
| | - Gisele Rodrigues
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, PC: (CEP) 70.790-160, Brasília-DF, Brazil
| | - Lucas Souza Santos
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, PC: (CEP) 70.790-160, Brasília-DF, Brazil
| | - Octávio Luiz Franco
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, PC: (CEP) 70.790-160, Brasília-DF, Brazil.,S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, PC: (CEP) 79117-010, Campo Grande-MS, Brazil
| |
Collapse
|
10
|
Gelenter M, Bax A. Recombinant Expression and Chemical Amidation of Isotopically Labeled Native Melittin. J Am Chem Soc 2023; 145:3850-3854. [PMID: 36753641 PMCID: PMC9951214 DOI: 10.1021/jacs.2c12631] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Indexed: 02/10/2023]
Abstract
Post-translational modifications are ubiquitous in the eukaryotic proteome. However, these modifications are rarely incorporated in NMR studies of eukaryotic proteins, which are typically produced through recombinant expression in E. coli. Melittin is the primary peptide in honey bee venom. Its native C-terminal amide significantly affects its equilibrium structure and dynamics in solution and is thus a prerequisite for studying its native structure and function. Here, we present a method for producing triply isotopically labeled (2H, 13C, and 15N) native melittin through recombinant expression followed by chemical amidation. We then show that structural models produced with AlphaFold-Multimer are in even better agreement with experimental residual dipolar couplings than the 2.0 Å resolution X-ray crystal structure for residues G3-K23.
Collapse
Affiliation(s)
- Martin
D. Gelenter
- Laboratory of Chemical Physics, NIDDK, National Institutes of Health, Bethesda, Maryland 20892-0520, United States
| | - Ad Bax
- Laboratory of Chemical Physics, NIDDK, National Institutes of Health, Bethesda, Maryland 20892-0520, United States
| |
Collapse
|
11
|
S100 Proteins as Novel Therapeutic Targets in Psoriasis and Other Autoimmune Diseases. Molecules 2022; 27:molecules27196640. [PMID: 36235175 PMCID: PMC9572071 DOI: 10.3390/molecules27196640] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/29/2022] [Accepted: 10/01/2022] [Indexed: 01/07/2023] Open
Abstract
Psoriasis is one of the most common inflammatory skin diseases affecting about 1-3% of the population. One of the characteristic abnormalities in psoriasis is the excessive production of antimicrobial peptides and proteins, which play an essential role in the pathogenesis of the disease. Antimicrobial peptides and proteins can be expressed differently in normal and diseased skin, reflecting their usefulness as diagnostic biomarkers. Moreover, due to their very important functions in innate immunity, members of host defense peptides and proteins are currently considered to be promising new therapeutic targets for many inflammatory diseases. Koebnerisin (S100A15) belongs to an S100 family of antimicrobial proteins, which constitute the multigenetic group of calcium-binding proteins involved in ion-dependent cellular functions and regulation of immune mechanisms. S100A15 was first discovered to be overexpressed in 'koebnerized' psoriatic skin, indicating its involvement in the disease phenotype and the same promising potential as a new therapeutic target. This review describes the involvement of antimicrobial peptides and proteins in inflammatory diseases' development and therapy. The discussion focuses on S100 proteins, especially koebnerisin, which may be involved in the underlying mechanism of the Köebner phenomenon in psoriasis, as well as other immune-mediated inflammatory diseases described in the last decade.
Collapse
|
12
|
Bhullar KS, Nael MA, Elokely KM, Drews SJ, Wu J. Structurally Modified Bioactive Peptide Inhibits SARS-CoV-2 Lentiviral Particles Expression. Pharmaceutics 2022; 14:pharmaceutics14102045. [PMID: 36297481 PMCID: PMC9607082 DOI: 10.3390/pharmaceutics14102045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/15/2022] [Accepted: 09/23/2022] [Indexed: 11/17/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19), the current global pandemic is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Various pharmaceuticals are being developed to counter the spread of the virus. The strategy of repurposing known drugs and bioactive molecules is a rational approach. A previously described molecule, Ile-Arg-Trp (IRW), is a bioactive tripeptide that exhibits an ability to boost angiotensin converting enzyme-2 (ACE2) expression in animals and cells. Given the importance of SARS-CoV-2 S receptor binding domain (RBD)-ACE2 interaction in SARS-CoV-2 pathophysiology, we synthesized various IRW analogs intending to mitigate the RBD-ACE-2 interaction. Herein, we describe two analogs of IRW, A9 (Acetyl-Ile-Arg-Trp-Amide) and A14 (Formyl-Ile-Arg-Trp-Amide) which lowered the SARS-CoV-2 S RBD-ACE2 (at 50 µM) in vitro. The free energy of binding suggested that A9 and A14 interacted with the SARS-CoV-2 S RBD more favorably than ACE2. The calculated MMGBSA ΔG of spike binding for A9 was −57.22 kcal/mol, while that of A14 was −52.44 kcal/mol. A14 also inhibited furin enzymatic activity at various tested concentrations (25, 50, and 100 µM). We confirmed the effect of the two potent analogs using SARS-CoV-2 spike protein overexpressing cells. Both peptides lowered the protein expression of SARS-CoV-2 spike protein at the tested concentration (50 µM). Similarly, both peptides, A9 and A14 (50 µM), also inhibited pseudotyped lentiviral particles with SARS-CoV-2 Spike in ACE2 overexpressing cells. Further, the molecular dynamics (MD) calculations showed the interaction of A9 and A14 with multiple residues in spike S1 RBD. In conclusion, novel peptide analogs of ACE2 boosting IRW were prepared and confirmed through in vitro, cellular, and computational evaluations to be potential seed candidates for SARS-CoV-2 host cell binding inhibition.
Collapse
Affiliation(s)
- Khushwant S. Bhullar
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2H7, Canada
| | - Manal A. Nael
- Institute for Computational Molecular Science and Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tanta 31527, Egypt
| | - Khaled M. Elokely
- Institute for Computational Molecular Science and Department of Chemistry, Temple University, Philadelphia, PA 19122, USA
| | - Steven J. Drews
- Canadian Blood Services, Department of Laboratory Medicine & Pathology, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Jianping Wu
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
- Cardiovascular Research Centre, University of Alberta, Edmonton, AB T6G 2R7, Canada
- Correspondence:
| |
Collapse
|
13
|
Bhat RAH, Thakuria D, Tandel RS, Khangembam VC, Dash P, Tripathi G, Sarma D. Tools and techniques for rational designing of antimicrobial peptides for aquaculture. FISH & SHELLFISH IMMUNOLOGY 2022; 127:1033-1050. [PMID: 35872334 DOI: 10.1016/j.fsi.2022.07.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 07/14/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Fisheries and aquaculture industries remain essential sources of food and nutrition for millions of people worldwide. Indiscriminate use of antibiotics has led to the emergence of antimicrobial-resistant bacteria and posed a severe threat to public health. Researchers have opined that antimicrobial peptides (AMPs) can be the best possible alternative to curb the rising tide of antimicrobial resistance in aquaculture. AMPs may also help to achieve the objectives of one health approach. The natural AMPs are associated with several shortcomings, like less in vivo stability, toxicity to host cell, high cost of production and low potency in a biological system. In this review, we have provided a comprehensive outline about the strategies for designing synthetic mimics of natural AMPs with high potency. Moreover, the freely available AMP databases and the information about the molecular docking tools are enlisted. We also provided in silico template for rationally designing the AMPs from fish piscidins or other peptides. The rationally designed piscidin (rP1 and rp2) may be used to tackle microbial infections in aquaculture. Further, the protocol can be used to develop the truncated mimics of natural AMPs having more potency and protease stability.
Collapse
Affiliation(s)
| | - Dimpal Thakuria
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, 263136, Uttarakhand, India
| | | | - Victoria C Khangembam
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, 263136, Uttarakhand, India
| | - Pragyan Dash
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, 263136, Uttarakhand, India
| | - Gayatri Tripathi
- ICAR-Central Institute of Fisheries Education, Mumbai, 400061, Maharashtra, India
| | - Debajit Sarma
- ICAR-Directorate of Coldwater Fisheries Research, Bhimtal, 263136, Uttarakhand, India
| |
Collapse
|
14
|
Amorim-Carmo B, Parente AMS, Souza ES, Silva-Junior AA, Araújo RM, Fernandes-Pedrosa MF. Antimicrobial Peptide Analogs From Scorpions: Modifications and Structure-Activity. Front Mol Biosci 2022; 9:887763. [PMID: 35712354 PMCID: PMC9197468 DOI: 10.3389/fmolb.2022.887763] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 04/19/2022] [Indexed: 11/29/2022] Open
Abstract
The rapid development of multidrug-resistant pathogens against conventional antibiotics is a global public health problem. The irrational use of antibiotics has promoted therapeutic limitations against different infections, making research of new molecules that can be applied to treat infections necessary. Antimicrobial peptides (AMPs) are a class of promising antibiotic molecules as they present broad action spectrum, potent activity, and do not easily induce resistance. Several AMPs from scorpion venoms have been described as a potential source for the development of new drugs; however, some limitations to their application are also observed. Here, we describe strategies used in several approaches to optimize scorpion AMPs, addressing their primary sequence, biotechnological potential, and characteristics that should be considered when developing an AMP derived from scorpion venoms. In addition, this review may contribute towards improving the understanding of rationally designing new molecules, targeting functional AMPs that may have a therapeutic application.
Collapse
Affiliation(s)
- Bruno Amorim-Carmo
- Laboratory of Pharmaceutical Technology and Biotechnology, Pharmacy Department, Federal University of Rio Grande do North, Natal, Brazil
| | - Adriana M. S. Parente
- Laboratory of Pharmaceutical Technology and Biotechnology, Pharmacy Department, Federal University of Rio Grande do North, Natal, Brazil
| | - Eden S. Souza
- School of Biomolecular and Biomedical Sciences, University College Dublin, Dublin, Ireland
| | - Arnóbio A. Silva-Junior
- Laboratory of Pharmaceutical Technology and Biotechnology, Pharmacy Department, Federal University of Rio Grande do North, Natal, Brazil
| | - Renata M. Araújo
- Laboratory of Pharmaceutical Technology and Biotechnology, Pharmacy Department, Federal University of Rio Grande do North, Natal, Brazil
| | - Matheus F. Fernandes-Pedrosa
- Laboratory of Pharmaceutical Technology and Biotechnology, Pharmacy Department, Federal University of Rio Grande do North, Natal, Brazil
| |
Collapse
|
15
|
Bhat RAH, Khangembam VC, Thakuria D, Pant V, Tandel RS, Tripathi G, Sarma D. Antimicrobial Activity of an Artificially Designed Peptide Against Fish Pathogens. Microbiol Res 2022; 260:127039. [DOI: 10.1016/j.micres.2022.127039] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 04/02/2022] [Accepted: 04/08/2022] [Indexed: 12/28/2022]
|
16
|
PEGylation enhances the antibacterial and therapeutic potential of amphibian host defence peptides. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2022; 1864:183806. [PMID: 34656552 DOI: 10.1016/j.bbamem.2021.183806] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 09/24/2021] [Accepted: 10/10/2021] [Indexed: 11/20/2022]
Abstract
Aurein 2.1, aurein 2.6 and aurein 3.1 are amphibian host defence peptides that kill bacteria via the use of lytic amphiphilic α-helical structures. The C-terminal PEGylation of these peptides led to decreased antibacterial activity (Minimum Lethal Concentration (MLCs) ↓ circa one and a half to threefold), reduced levels of amphiphilic α-helical structure in solvents (α-helicity ↓ circa 15.0%) and lower surface activity (Δπ ↓ > 1.5 mN m-1). This PEGylation of aureins also led to decreased levels of amphiphilic α-helical structure in the presence of anionic membranes and zwitterionic membranes (α-helicity↓ > 10.0%) as well as reduced levels of penetration (Δπ ↓ > 3.0 mN m-1) and lysis (lysis ↓ > 10.0%) of these membranes. Based on these data, it was proposed that the antibacterial action of PEGylated aureins involved the adoption of α-helical structures that promote the lysis of bacterial membranes, but with lower efficacy than their native counterparts. However, PEGylation also reduced the haemolytic activity of native aureins to negligible levels (haemolysis ↓ from circa 10% to 3% or less) and improved their relative therapeutic indices (RTIs ↑ circa three to sixfold). Based on these data, it is proposed that PEGylated aureins possess the potential for therapeutic development; for example, to combat infections due to multi-drug resistant strains of S. aureus, designated as high priority by the World Health Organization.
Collapse
|
17
|
Gan BH, Gaynord J, Rowe SM, Deingruber T, Spring DR. The multifaceted nature of antimicrobial peptides: current synthetic chemistry approaches and future directions. Chem Soc Rev 2021; 50:7820-7880. [PMID: 34042120 PMCID: PMC8689412 DOI: 10.1039/d0cs00729c] [Citation(s) in RCA: 184] [Impact Index Per Article: 61.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Indexed: 12/13/2022]
Abstract
Bacterial infections caused by 'superbugs' are increasing globally, and conventional antibiotics are becoming less effective against these bacteria, such that we risk entering a post-antibiotic era. In recent years, antimicrobial peptides (AMPs) have gained significant attention for their clinical potential as a new class of antibiotics to combat antimicrobial resistance. In this review, we discuss several facets of AMPs including their diversity, physicochemical properties, mechanisms of action, and effects of environmental factors on these features. This review outlines various chemical synthetic strategies that have been applied to develop novel AMPs, including chemical modifications of existing peptides, semi-synthesis, and computer-aided design. We will also highlight novel AMP structures, including hybrids, antimicrobial dendrimers and polypeptides, peptidomimetics, and AMP-drug conjugates and consider recent developments in their chemical synthesis.
Collapse
Affiliation(s)
- Bee Ha Gan
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
| | - Josephine Gaynord
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
| | - Sam M Rowe
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
| | - Tomas Deingruber
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
| | - David R Spring
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
| |
Collapse
|
18
|
Improved Stability and Activity of a Marine Peptide-N6NH2 against Edwardsiella tarda and Its Preliminary Application in Fish. Mar Drugs 2020; 18:md18120650. [PMID: 33348729 PMCID: PMC7766155 DOI: 10.3390/md18120650] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 11/28/2020] [Accepted: 12/14/2020] [Indexed: 02/06/2023] Open
Abstract
Edwardsiella tarda can cause fatal gastro-/extraintestinal diseases in fish and humans. Overuse of antibiotics has led to antibiotic resistance and contamination in the environment, which highlights the need to find new antimicrobial agents. In this study, the marine peptide-N6 was amidated at its C-terminus to generate N6NH2. The antibacterial activity of N6 and N6NH2 against E. tarda was evaluated in vitro and in vivo; their stability, toxicity and mode of action were also determined. Minimal inhibitory concentrations (MICs) of N6 and N6NH2 against E. tarda were 1.29–3.2 μM. Both N6 and N6NH2 killed bacteria by destroying the cell membrane of E. tarda and binding to lipopolysaccharide (LPS) and genomic DNA. In contrast with N6, N6NH2 improved the stability toward trypsin, reduced hemolysis (by 0.19% at a concentration of 256 μg/mL) and enhanced the ability to penetrate the bacterial outer and inner membrane. In the model of fish peritonitis caused by E. tarda, superior to norfloxacin, N6NH2 improved the survival rate of fish, reduced the bacterial load on the organs, alleviated the organ injury and regulated the immunity of the liver and kidney. These data suggest that the marine peptide N6NH2 may be a candidate for novel antimicrobial agents against E. tarda infections.
Collapse
|
19
|
Müller AT, Posselt G, Gabernet G, Neuhaus C, Bachler S, Blatter M, Pfeiffer B, Hiss JA, Dittrich PS, Altmann KH, Wessler S, Schneider G. Morphing of Amphipathic Helices to Explore the Activity and Selectivity of Membranolytic Antimicrobial Peptides. Biochemistry 2020; 59:3772-3781. [PMID: 32936629 PMCID: PMC7547863 DOI: 10.1021/acs.biochem.0c00565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/07/2020] [Indexed: 01/17/2023]
Abstract
Naturally occurring membranolytic antimicrobial peptides (AMPs) are rarely cell-type selective and highly potent at the same time. Template-based peptide design can be used to generate AMPs with improved properties de novo. Following this approach, 18 linear peptides were obtained by computationally morphing the natural AMP Aurein 2.2d2 GLFDIVKKVVGALG into the synthetic model AMP KLLKLLKKLLKLLK. Eleven of the 18 chimeric designs inhibited the growth of Staphylococcus aureus, and six peptides were tested and found to be active against one resistant pathogenic strain or more. One of the peptides was broadly active against bacterial and fungal pathogens without exhibiting toxicity to certain human cell lines. Solution nuclear magnetic resonance and molecular dynamics simulation suggested an oblique-oriented membrane insertion mechanism of this helical de novo peptide. Temperature-resolved circular dichroism spectroscopy pointed to conformational flexibility as an essential feature of cell-type selective AMPs.
Collapse
Affiliation(s)
- Alex T. Müller
- Department
of Chemistry and Applied Biosciences, ETH
Zurich, Vladimir-Prelog-Weg 4, 8093 Zürich, Switzerland
| | - Gernot Posselt
- Department
of Biosciences, Division of Microbiology, Paris Lodron University of Salzburg, Billrothstrasse 11, 5020 Salzburg, Austria
| | - Gisela Gabernet
- Department
of Chemistry and Applied Biosciences, ETH
Zurich, Vladimir-Prelog-Weg 4, 8093 Zürich, Switzerland
| | - Claudia Neuhaus
- Department
of Chemistry and Applied Biosciences, ETH
Zurich, Vladimir-Prelog-Weg 4, 8093 Zürich, Switzerland
| | - Simon Bachler
- Department
of Biosystems Science and Engineering, ETH
Zurich, Mattenstrasse
26, 4058 Basel, Switzerland
| | - Markus Blatter
- Novartis
Institutes for BioMedical Research, Novartis
Pharma AG, Novartis Campus, 4002 Basel, Switzerland
| | - Bernhard Pfeiffer
- Department
of Chemistry and Applied Biosciences, ETH
Zurich, Vladimir-Prelog-Weg 4, 8093 Zürich, Switzerland
| | - Jan A. Hiss
- Department
of Chemistry and Applied Biosciences, ETH
Zurich, Vladimir-Prelog-Weg 4, 8093 Zürich, Switzerland
| | - Petra S. Dittrich
- Department
of Biosystems Science and Engineering, ETH
Zurich, Mattenstrasse
26, 4058 Basel, Switzerland
| | - Karl-Heinz Altmann
- Department
of Chemistry and Applied Biosciences, ETH
Zurich, Vladimir-Prelog-Weg 4, 8093 Zürich, Switzerland
| | - Silja Wessler
- Department
of Biosciences, Division of Microbiology, Paris Lodron University of Salzburg, Billrothstrasse 11, 5020 Salzburg, Austria
| | - Gisbert Schneider
- Department
of Chemistry and Applied Biosciences, ETH
Zurich, Vladimir-Prelog-Weg 4, 8093 Zürich, Switzerland
| |
Collapse
|
20
|
Kumar SD, Shin SY. Antimicrobial and anti-inflammatory activities of short dodecapeptides derived from duck cathelicidin: Plausible mechanism of bactericidal action and endotoxin neutralization. Eur J Med Chem 2020; 204:112580. [DOI: 10.1016/j.ejmech.2020.112580] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/27/2020] [Accepted: 06/11/2020] [Indexed: 01/04/2023]
|
21
|
Li JF, Zhang JX, Li G, Xu YY, Lu K, Wang ZG, Liu JP. Antimicrobial activity and mechanism of peptide CM4 against Pseudomonas aeruginosa. Food Funct 2020; 11:7245-7254. [PMID: 32766662 DOI: 10.1039/d0fo01031f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Antibacterial peptide CM4 (ABP-CM4) is a small cationic peptide with broad-spectrum activities against bacteria, fungi and tumor cells and may possibly be used as an antimicrobial agent. In this study, a C-terminal amidated antibacterial peptide ABP-CM4 (ABP-CM4N) with the strongest antibacterial activity was obtained through screening the antibacterial activities of ABP-CM4 with different modifications. The minimal inhibitory concentration of ABP-CM4N was 8 μM against P. aeruginosa (ATCC 27853) which was lower than that of ABP-CM4 (16 μM). The strengthened antimicrobial activity of ABP-CM4N may be associated with the increased membrane binding capacity, being two times that of ABP-CM4 (p < 0.001). The antibacterial mechanism of ABP-CM4N to Pseudomonas aeruginosa was examined by means of cell membrane integrity analysiss, the intracellular ultrastructure change observation and E. coli genomic DNA binding assay. It was found that ABP-CM4N had the same antimicrobial mechanism as ABP-CM4, and the aim of the antimicrobial mechanism was mainly to destroy the cell membrane which caused nucleic acid or protein leakage, and secondly to interact with E. coli genomic DNA after penetrating the cell membrane. Furthermore, in vitro ABP-CM4N showed a better bacteriostatic activity in meats, with the treated samples showing two to three times less positive colonies than ABP-CM4.
Collapse
Affiliation(s)
- Jian-Feng Li
- Institute of Aging Research, School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang Province 311121, China.
| | - Jia-Xin Zhang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210046, China
| | - Guo Li
- Department of Biochemistry and Molecular Biology and Key Laboratory of Molecular Biology, School of Basic Medicine and Life Sciences, Hainan Medical College, Haikou, 571199, China
| | - Yan-Yan Xu
- Institute of Aging Research, School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang Province 311121, China.
| | - Kai Lu
- School of Medicine, Wenzhou Medical College, Wenzhou, Zhejiang Province 325035, China
| | - Zhi-Guo Wang
- Institute of Aging Research, School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang Province 311121, China.
| | - Jun-Ping Liu
- Institute of Aging Research, School of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang Province 311121, China.
| |
Collapse
|
22
|
Sánchez-Acosta YA, Castillo Vargas JA, Ramírez Quintero KJ, Orduz Peralta S, Camargo Rodríguez DO. Peptide derivatives of dermaseptin S4 in fresh bovine semen for bacterial contamination control: Physicochemical and structural characterization, antibacterial potency, and effects on red blood and sperm cells. Reprod Domest Anim 2020; 55:905-914. [PMID: 32406577 DOI: 10.1111/rda.13701] [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: 02/24/2020] [Accepted: 05/04/2020] [Indexed: 11/27/2022]
Abstract
The objectives of this study were to examine the physicochemical and structural properties of peptide derivatives of dermaseptin S4, investigate their detrimental effects on red blood and sperm cells and ascertain their antibacterial potency to control bacterial contaminants in fresh bovine semen. The dermaseptin S4 peptide derivatives used in this study were K4S4, S4(5-28), S4(5-28)a, K20S4(5-28), K4S4(1-16)a, K4S4(1-15)a and K4S4(1-15). Peptides K4S4, S4(5-28)a, K20S4(5-28), K4S4(1-15)a and K4S4(1-16)a, with a higher positive charge, were the most potent against the bacterial strains tested, with the lowest minimum inhibitory concentration (MIC), whereas S4(5-28) and K4S4(1-15), with a lower positive charge, showed the highest MIC (p < .01). Haemolysis percentage depended on peptide concentration (p < .01). The K4S4 was the most powerful haemolytic peptide, showing the highest haemolysis percentage at all peptide concentrations (p < .01). In contrast, S4(5-28), S4(5-28)a, K20S4(5-28) and K4S4(1-15) were not able to produce 50% cell lysis up to 100 µM (p < .01). All peptides reduced sperm motility in a dose-dependent manner when used in concentrations from 16 to 64 μM (p < .01). The highest reduction was seen due to K4S4 activity, and the lowest reductions of sperm motility were observed due to K4S4(1-16)a and K4S4(1-15)a activity (p < .01). Hence, we can conclude that K4S4(1-16)a and K4S4(1-15)a at a concentration of approximately 15 µM are the most promising peptides as antibacterial agents in fresh bovine semen, because at this concentration, they showed the most potent antibacterial activity against evaluated strains without significant effects on haemolysis or a reduction in sperm motility.
Collapse
Affiliation(s)
| | - Julián Andrés Castillo Vargas
- Departamento de Zootecnia, Universidade Federal Rural da Amazônia, Parauapebas, Brazil.,Escuela de Ciencias Agrícolas, Pecuarias y del Medio Ambiente, Universidad Nacional Abierta y a Distancia, Medellín, Colombia
| | | | | | | |
Collapse
|
23
|
Ting DSJ, Beuerman RW, Dua HS, Lakshminarayanan R, Mohammed I. Strategies in Translating the Therapeutic Potentials of Host Defense Peptides. Front Immunol 2020; 11:983. [PMID: 32528474 PMCID: PMC7256188 DOI: 10.3389/fimmu.2020.00983] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 04/27/2020] [Indexed: 01/13/2023] Open
Abstract
The golden era of antibiotics, heralded by the discovery of penicillin, has long been challenged by the emergence of antimicrobial resistance (AMR). Host defense peptides (HDPs), previously known as antimicrobial peptides, are emerging as a group of promising antimicrobial candidates for combatting AMR due to their rapid and unique antimicrobial action. Decades of research have advanced our understanding of the relationship between the physicochemical properties of HDPs and their underlying antimicrobial and non-antimicrobial functions, including immunomodulatory, anti-biofilm, and wound healing properties. However, the mission of translating novel HDP-derived molecules from bench to bedside has yet to be fully accomplished, primarily attributed to their intricate structure-activity relationship, toxicity, instability in host and microbial environment, lack of correlation between in vitro and in vivo efficacies, and dwindling interest from large pharmaceutical companies. Based on our previous experience and the expanding knowledge gleaned from the literature, this review aims to summarize the novel strategies that have been employed to enhance the antimicrobial efficacy, proteolytic stability, and cell selectivity, which are all crucial factors for bench-to-bedside translation of HDP-based treatment. Strategies such as residues substitution with natural and/or unnatural amino acids, hybridization, L-to-D heterochiral isomerization, C- and N-terminal modification, cyclization, incorporation with nanoparticles, and "smart design" using artificial intelligence technology, will be discussed. We also provide an overview of HDP-based treatment that are currently in the development pipeline.
Collapse
Affiliation(s)
- Darren Shu Jeng Ting
- Larry A. Donoso Laboratory for Eye Research, Academic Ophthalmology, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Nottingham, United Kingdom.,Department of Ophthalmology, Queen's Medical Centre, Nottingham, United Kingdom.,Anti-infectives Research Group, Singapore Eye Research Institute, The Academia, Singapore, Singapore
| | - Roger W Beuerman
- Anti-infectives Research Group, Singapore Eye Research Institute, The Academia, Singapore, Singapore
| | - Harminder S Dua
- Larry A. Donoso Laboratory for Eye Research, Academic Ophthalmology, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Nottingham, United Kingdom.,Department of Ophthalmology, Queen's Medical Centre, Nottingham, United Kingdom
| | - Rajamani Lakshminarayanan
- Anti-infectives Research Group, Singapore Eye Research Institute, The Academia, Singapore, Singapore
| | - Imran Mohammed
- Larry A. Donoso Laboratory for Eye Research, Academic Ophthalmology, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Nottingham, United Kingdom
| |
Collapse
|
24
|
Conceição K, de Cena GL, da Silva VA, de Oliveira Neto XA, de Andrade VM, Tada DB, Richardson M, de Andrade SA, Dias SA, Castanho MARB, Lopes-Ferreira M. Design of bioactive peptides derived from CART sequence isolated from the toadfish Thalassophryne nattereri. 3 Biotech 2020; 10:162. [PMID: 32206496 PMCID: PMC7060301 DOI: 10.1007/s13205-020-2151-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Accepted: 02/18/2020] [Indexed: 10/24/2022] Open
Abstract
The emergence of bacterial resistance due to the indiscriminate use of antibiotics warrants the need for developing new bioactive agents. In this context, antimicrobial peptides are highly useful for managing resistant microbial strains. In this study, we report the isolation and characterization of peptides obtained from the venom of the toadfish Thalassophryne nattereri. These peptides were active against Gram-positive and Gram-negative bacteria and fungi. The primary amino acid sequences showed similarity to Cocaine and Amphetamine Regulated Transcript peptides, and two peptide analogs-Tn CRT2 and Tn CRT3-were designed using the AMPA algorithm based on these sequences. The analogs were subjected to physicochemical analysis and antimicrobial screening and were biologically active at concentrations ranging from 2.1 to 13 µM. Zeta potential analysis showed that the peptide analogs increased the positive charge on the cell surface of Gram-positive and Gram-negative bacteria. The toxicity of Tn CRT2 and Tn CRT3 were analyzed in vitro using a hemolytic assay and tetrazolium salt reduction in fibroblasts and was found to be significant only at high concentrations (up to 40 µM). These results suggest that this methodological approach is appropriate to design novel antimicrobial peptides to fight bacterial infections and represents a new and promising discovery in fish venom.
Collapse
Affiliation(s)
- Katia Conceição
- Laboratório de Bioquímica de Peptídeos, Universidade Federal de São Paulo-UNIFESP, Rua Talim, 330, São José dos Campos, Brazil
| | - Gabrielle L. de Cena
- Laboratório de Bioquímica de Peptídeos, Universidade Federal de São Paulo-UNIFESP, Rua Talim, 330, São José dos Campos, Brazil
| | - Verônica A. da Silva
- Laboratório de Bioquímica de Peptídeos, Universidade Federal de São Paulo-UNIFESP, Rua Talim, 330, São José dos Campos, Brazil
| | - Xisto Antonio de Oliveira Neto
- Laboratório de Bioquímica de Peptídeos, Universidade Federal de São Paulo-UNIFESP, Rua Talim, 330, São José dos Campos, Brazil
| | - Vitor Martins de Andrade
- Laboratório de Bioquímica de Peptídeos, Universidade Federal de São Paulo-UNIFESP, Rua Talim, 330, São José dos Campos, Brazil
| | - Dayane Batista Tada
- Laboratório de Nanomateriais e Nanotoxicologia, Universidade Federal de São Paulo-UNIFESP, Rua Talim, 330, São José dos Campos, Brazil
| | - Michael Richardson
- Centro de Pesquisa e Desenvolvimento Prof. Carlos R. Diniz, Fundação Ezequiel Dias, Rua Conde Pereira Carneiro 80, Belo Horizonte, MG Brazil
| | - Sonia A. de Andrade
- Laboratório Especial de Toxicologia Aplicada, Instituto Butantan, Av. Vital Brasil, São Paulo, 1500 Brazil
| | - Susana A. Dias
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649‐028 Lisboa, Portugal
| | - Miguel A. R. B. Castanho
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649‐028 Lisboa, Portugal
| | - Mônica Lopes-Ferreira
- Laboratório Especial de Toxicologia Aplicada, Instituto Butantan, Av. Vital Brasil, São Paulo, 1500 Brazil
| |
Collapse
|
25
|
Sepehri A, PeBenito L, Pino-Angeles A, Lazaridis T. What Makes a Good Pore Former: A Study of Synthetic Melittin Derivatives. Biophys J 2020; 118:1901-1913. [PMID: 32183940 DOI: 10.1016/j.bpj.2020.02.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/25/2020] [Accepted: 02/12/2020] [Indexed: 12/15/2022] Open
Abstract
Pore formation by membrane-active peptides, naturally encountered in innate immunity and infection, could have important medical and technological applications. Recently, the well-studied lytic peptide melittin has formed the basis for the development of combinatorial libraries from which potent pore-forming peptides have been derived, optimized to work under different conditions. We investigate three such peptides, macrolittin70, which is most active at neutral pH; pHD15, which is active only at low pH; and MelP5_Δ6, which was rationally designed to be active at low pH but formed only small pores. There are three, six, and six acidic residues in macrolittin70, pHD15, and MelP5_Δ6, respectively. We perform multi-microsecond simulations in 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) of hexamers of these peptides starting from transmembrane orientations at neutral pH (all residues at standard protonation), low pH (acidic residues and His protonated), and highly acidic environments in which C-termini are also protonated. Previous simulations of the parent peptides melittin and MelP5 in 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) are repeated in POPC. We find that the most potent pore-forming peptides exhibit strong interpeptide interactions, including salt bridges, H-bonds, and polar interactions. Protonation of the C-terminus promotes helicity and pore size. The proximity of the peptides allows fewer lipid headgroups to line the pores than in previous simulations, making the pores intermediate between barrel stave and toroidal. Based on these structures and geometrical arguments, we attempt to rationalize the factors that under different conditions can increase or decrease pore stability and propose mutations that could be tested experimentally.
Collapse
Affiliation(s)
- Aliasghar Sepehri
- Department of Chemistry & Biochemistry, The City College of New York, New York, New York
| | - Leo PeBenito
- Department of Chemistry & Biochemistry, The City College of New York, New York, New York; Graduate Program in Chemistry, The Graduate Center, City University of New York, New York, New York
| | - Almudena Pino-Angeles
- Department of Chemistry & Biochemistry, The City College of New York, New York, New York
| | - Themis Lazaridis
- Department of Chemistry & Biochemistry, The City College of New York, New York, New York; Graduate Program in Chemistry, The Graduate Center, City University of New York, New York, New York.
| |
Collapse
|
26
|
The role of C-terminal amidation in the mechanism of action of the antimicrobial peptide aurein 1.2. THE EUROBIOTECH JOURNAL 2020. [DOI: 10.2478/ebtj-2020-0004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract
C-terminal amidation is a common feature of wild type membrane disrupting antimicrobial peptides (AMPs). Empirical evidence suggests that this modification increases antimicrobial efficacy. However, the actual role of C-terminal amidation in the molecular mechanism of action of AMPs is not fully understood. Amidation alters two key properties simultaneously: the net charge and helicity of the peptide, both of which are implicated in the mechanism of action. However, the differences between the physicochemical properties of the carboxyl and amide moieties have been disregarded in former studies. In this study we assessed whether the difference in activity is only caused by changes in the helicity and overall charge of a peptide, i.e. whether the chemistry of the terminus is otherwise irrelevant. To do so, the membrane disrupting activity of a modified aurein 1.2 peptide was studied in which a secondary amide was formed with a terminal methyl group, instead of the primary amide as in the wild type peptide. Results of quartz crystal microbalance, dye leakage and circular dichroism experiments show that the activity of the modified peptide is substantially reduced compared to the wild type peptide, in particular that the modified peptide exhibited a much-reduced ability to bind to the membrane. Thus, the primary amide at the C-terminus is required to bind to the membrane, and a secondary amide cannot serve the same purpose. We hypothesize that this difference is related to the hydration state of the terminus. The lack of membrane binding ability of the modified peptide identifies the primary amide moiety at the C terminus as a specific membrane binding motif.
Collapse
|
27
|
Al Tall Y, Abualhaijaa A, Qaoud MT, Alsaggar M, Masadeh M, Alzoubi KH. The Ultrashort Peptide OW: A New Antibiotic Adjuvant. Curr Pharm Biotechnol 2020; 20:745-754. [PMID: 31258076 DOI: 10.2174/1389201020666190618111252] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 01/04/2023]
Abstract
BACKGROUND The over use of current antibiotics and low discovery rate of the new ones are leading to rapid development of multidrug-resistant pathogens worldwide. Antimicrobial peptides have shown promising results against multidrug-resistant bacteria. OBJECTIVE To investigate the antimicrobial activity of a new ultrashort hexapeptide (OW). METHODS The OW hexapeptide was designed and tested against different strains of bacteria with different levels of sensitivity. Bacterial susceptibility assays were performed according to the guidelines of the Clinical and Laboratory Institute (CLSI). The synergistic studies were then conducted using the Checkerboard assay. This was followed by checking the hemolytic effect of the hexapeptide against human blood cells and Human Embryonic Kidney cell line (HEK293). Finally, the antibiofilm activities of the hexapeptide were studied using the Biofilm Calgary method. RESULTS Synergistic assays showed that OW has synergistic effects with antibiotics of different mechanisms of action. It showed an outstanding synergism with Rifampicin against methicillin resistant Staphylococcus aureus; ΣFIC value was 0.37, and the MIC value of Rifampicin was decreased by 85%. OW peptide also displayed an excellent synergism with Ampicillin against multidrug-resistant Pseudomonas aeruginosa, with ΣFIC value of less than 0.38 and a reduction of more than 96% in the MIC value of Ampicillin. CONCLUSION This study introduced a new ultrashort peptide (OW) with promising antimicrobial potential in the management of drug-resistant infectious diseases as a single agent or in combination with commonly used antibiotics. Further studies are needed to investigate the exact mechanism of action of these peptides.
Collapse
Affiliation(s)
- Yara Al Tall
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Ahmad Abualhaijaa
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Mohammed T Qaoud
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Mohammad Alsaggar
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Majed Masadeh
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| | - Karem H Alzoubi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid, Jordan
| |
Collapse
|
28
|
Dennison SR, Hauß T, Badiani K, Harris F, Phoenix DA. Biophysical investigation into the antibacterial action of modelin-5-NH 2. SOFT MATTER 2019; 15:4215-4226. [PMID: 31074477 DOI: 10.1039/c8sm02374c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Modelin-5-CONH2 (M5-NH2) is a synthetic antimicrobial peptide, which was found to show potent activity against Bacillus subtilis (minimum lethal concentration = 8.47 μM) and to bind strongly to membranes of the organism (Kd = 10.44 μM). The peptide adopted high levels of amphiphilic α-helical structure in the presence of these membranes (>50%), which led to high levels of insertion (Δπ ≥ 8.0 mN m-1). M5-NH2 showed high affinity for anionic lipid (Kd = 7.46 μM) and zwitterionic lipid (Kd = 14.7 μM), which drove insertion into membranes formed from these lipids (Δπ = 11.5 and 3.5 mN m-1, respectively). Neutron diffraction studies showed that M5-NH2 inserted into B. subtilis membranes with its N-terminal residue, L16, located 5.5 Å from the membrane centre, in the acyl chain region of these membranes, and promoted a reduction in membrane thickness of circa 1.8 Å or 5% of membrane width. Insertion into B. subtilis membranes by the peptide also promoted other effects associated with membrane thinning, including increases in membrane surface area (Cs-1 decreases) and fluidity (ΔGmix > 0 to ΔGmix < 0). Membrane insertion and thinning by M5-NH2 induced high levels of lysis (>55%), and it is speculated that the antibacterial action of the peptide may involve the toroidal pore, carpet or tilted-type mechanism of membrane permeabilization.
Collapse
Affiliation(s)
- Sarah R Dennison
- School of Pharmacy and Biological Sciences, University of Central Lancashire, Preston PR1 2HE, UK
| | | | | | | | | |
Collapse
|
29
|
Dong N, Chou S, Li J, Xue C, Li X, Cheng B, Shan A, Xu L. Short Symmetric-End Antimicrobial Peptides Centered on β-Turn Amino Acids Unit Improve Selectivity and Stability. Front Microbiol 2018; 9:2832. [PMID: 30538681 PMCID: PMC6277555 DOI: 10.3389/fmicb.2018.02832] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 11/05/2018] [Indexed: 11/13/2022] Open
Abstract
Antimicrobial peptides (AMPs) are excellent candidates to combat the increasing number of multi- or pan-resistant pathogens worldwide based on their mechanism of action, which is different from that of antibiotics. In this study, we designed short peptides by fusing an α-helix and β-turn sequence-motif in a symmetric-end template to promote the higher cell selectivity, antibacterial activity and salt-resistance of these structures. The results showed that the designed peptides PQ and PP tended to form an α-helical structure upon interacting with a membrane-mimicking environment. They displayed high cell selectivity toward bacterial cells over eukaryotic cells. Their activities were mostly maintained in the presence of different conditions (salts, serum, heat, and pH), which indicated their stability in vivo. Fluorescence spectroscopy and electron microscopy analyses indicated that PP and PQ killed bacterial cells through membrane pore formation, thereby damaging membrane integrity. This study revealed the potential application of these designed peptides as new candidate antimicrobial agents.
Collapse
Affiliation(s)
- Na Dong
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Shuli Chou
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Jiawei Li
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Chenyu Xue
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Xinran Li
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Baojing Cheng
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Anshan Shan
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| | - Li Xu
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin, China
| |
Collapse
|
30
|
Cardon S, Sachon E, Carlier L, Drujon T, Walrant A, Alemán-Navarro E, Martínez-Osorio V, Guianvarc'h D, Sagan S, Fleury Y, Marquant R, Piesse C, Rosenstein Y, Auvynet C, Lacombe C. Peptidoglycan potentiates the membrane disrupting effect of the carboxyamidated form of DMS-DA6, a Gram-positive selective antimicrobial peptide isolated from Pachymedusa dacnicolor skin. PLoS One 2018; 13:e0205727. [PMID: 30325956 PMCID: PMC6191125 DOI: 10.1371/journal.pone.0205727] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 10/01/2018] [Indexed: 11/18/2022] Open
Abstract
The occurrence of nosocomial infections has been on the rise for the past twenty years. Notably, infections caused by the Gram-positive bacteria Staphylococcus aureus represent a major clinical problem, as an increase in antibiotic multi-resistant strains has accompanied this rise. There is thus a crucial need to find and characterize new antibiotics against Gram-positive bacteria, and against antibiotic-resistant strains in general. We identified a new dermaseptin, DMS-DA6, produced by the skin of the Mexican frog Pachymedusa dacnicolor, with specific antibacterial activity against Gram-positive bacteria. This peptide is particularly effective against two multiple drug-resistant strains Enterococcus faecium BM4147 and Staphylococcus aureus DAR5829, and has no hemolytic activity. DMS-DA6 is naturally produced with the C-terminal carboxyl group in either the free or amide forms. By using Gram-positive model membranes and different experimental approaches, we showed that both forms of the peptide adopt an α-helical fold and have the same ability to insert into, and to disorganize a membrane composed of anionic lipids. However, the bactericidal capacity of DMS-DA6-NH2 was consistently more potent than that of DMS-DA6-OH. Remarkably, rather than resulting from the interaction with the negatively charged lipids of the membrane, or from a more stable conformation towards proteolysis, the increased capacity to permeabilize the membrane of Gram-positive bacteria of the carboxyamidated form of DMS-DA6 was found to result from its enhanced ability to interact with peptidoglycan.
Collapse
Affiliation(s)
- Sébastien Cardon
- Sorbonne Université, École normale supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, Paris, France
| | - Emmanuelle Sachon
- Sorbonne Université, École normale supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, Paris, France
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Plate-forme Spectrométrie de Masse et Protéomique, Paris, France
| | - Ludovic Carlier
- Sorbonne Université, École normale supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, Paris, France
| | - Thierry Drujon
- Sorbonne Université, École normale supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, Paris, France
| | - Astrid Walrant
- Sorbonne Université, École normale supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, Paris, France
| | - Estefanía Alemán-Navarro
- Instituto de Biotecnologia, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Verónica Martínez-Osorio
- Instituto de Biotecnologia, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Dominique Guianvarc'h
- Sorbonne Université, École normale supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, Paris, France
| | - Sandrine Sagan
- Sorbonne Université, École normale supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, Paris, France
| | - Yannick Fleury
- Université de Bretagne Occidentale, LUBEM EA, IUT Quimper, Quimper, France
| | - Rodrigue Marquant
- Sorbonne Université, École normale supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, Paris, France
| | - Christophe Piesse
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Plate-forme de Synthèse Peptidique, Paris, France
| | - Yvonne Rosenstein
- Instituto de Biotecnologia, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Constance Auvynet
- Instituto de Biotecnologia, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
- * E-mail: (CA); (CL)
| | - Claire Lacombe
- Sorbonne Université, École normale supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, Paris, France
- Faculté des Sciences et Technologie, Université Paris Est-Créteil Val de Marne, Créteil, France
- * E-mail: (CA); (CL)
| |
Collapse
|
31
|
Houyvet B, Bouchon-Navaro Y, Bouchon C, Goux D, Bernay B, Corre E, Zatylny-Gaudin C. Identification of a moronecidin-like antimicrobial peptide in the venomous fish Pterois volitans: Functional and structural study of pteroicidin-α. FISH & SHELLFISH IMMUNOLOGY 2018; 72:318-324. [PMID: 29108968 DOI: 10.1016/j.fsi.2017.11.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 11/01/2017] [Accepted: 11/02/2017] [Indexed: 06/07/2023]
Abstract
The present study characterizes for the first time an antimicrobial peptide in lionfish (Pterois volitans), a venomous fish. Using a peptidomic approach, we identified a mature piscidin in lionfish and called it pteroicidin-α. We detected an amidated form (pteroicidin-α- CONH2) and a non-amidated form (pteroicidin-α-COOH), and then performed their functional and structural study. Interestingly, the two peptides displayed different antibacterial and hemolytic activity levels. Pteroicidin-α-CONH2 was bactericidal on human pathogens like Staphylococcus aureus or Escherichia coli, as well as on the fish pathogen Aeromonas salmonicida, while pteroicidin-α-COOH only inhibited their growth. Furthermore, the two peptides induced hemolysis of red blood cells from different vertebrates, namely humans, sea bass and lesser-spotted dogfish. Hemolysis occurred with low concentrations of pteroicidin-α-CONH2, indicating greater toxicity of the amidated form. Circular dichroism analysis showed that both peptides adopted a helical conformation, yet with a greater α-helix content in pteroicidin-α-CONH2. Overall, these results suggest that amidation strongly influences pteroicidin-α by modifying its structure and its physico-chemical characteristics and by increasing its hemolytic activity.
Collapse
Affiliation(s)
- Baptiste Houyvet
- Normandie Univ, UNICAEN, Sorbonne Universités, MNHN, UPMC Univ Paris 06, UA, CNRS, IRD, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), 14032 Caen, France; SATMAR, Société ATlantique de MARiculture, 50760 Gatteville-Phare, France
| | - Yolande Bouchon-Navaro
- Université des Antilles, Sorbonne Universités, MNHN, UPMC Univ Paris 06, UNICAEN, CNRS, IRD, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Labex Corail, Campus de Fouillole, BP 592, 97159 Pointe-à-Pitre, Guadeloupe
| | - Claude Bouchon
- Université des Antilles, Sorbonne Universités, MNHN, UPMC Univ Paris 06, UNICAEN, CNRS, IRD, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Labex Corail, Campus de Fouillole, BP 592, 97159 Pointe-à-Pitre, Guadeloupe
| | - Didier Goux
- CMABio(3)FF 4206 ICORE, Normandie Université, UNICAEN, Esplanade de la Paix, 14032 Caen Cedex, France
| | - Benoît Bernay
- Plateforme Proteogen, FF 4206 ICORE, Normandie Université, UNICAEN, Esplanade de la Paix, 14032 Caen Cedex, France
| | - Erwan Corre
- Plateforme ABiMS, Station biologique de Roscoff (UPMC-CNRS), F-29688 Roscoff, France
| | - Céline Zatylny-Gaudin
- Normandie Univ, UNICAEN, Sorbonne Universités, MNHN, UPMC Univ Paris 06, UA, CNRS, IRD, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), 14032 Caen, France.
| |
Collapse
|
32
|
Dennison SR, Morton LH, Harris F, Phoenix DA. Low pH Enhances the Action of Maximin H5 against Staphylococcus aureus and Helps Mediate Lysylated Phosphatidylglycerol-Induced Resistance. Biochemistry 2016; 55:3735-51. [PMID: 27336672 DOI: 10.1021/acs.biochem.6b00101] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Maximin H5 (MH5) is an amphibian antimicrobial peptide specifically targeting Staphylococcus aureus. At pH 6, the peptide showed an improved ability to penetrate (ΔΠ = 6.2 mN m(-1)) and lyse (lysis = 48%) Staphylococcus aureus membrane mimics, which incorporated physiological levels of lysylated phosphatidylglycerol (Lys-PG, 60%), compared to that at pH 7 (ΔΠ = 5.6 mN m(-1) and lysis = 40% at pH 7) where levels of Lys-PG are lower (40%). The peptide therefore appears to have optimal function at pH levels known to be optimal for the organism's growth. MH5 killed S. aureus (minimum inhibitory concentration of 90 μM) via membranolytic mechanisms that involved the stabilization of α-helical structure (approximately 45-50%) and showed similarities to the "Carpet" mechanism based on its ability to increase the rigidity (Cs(-1) = 109.94 mN m(-1)) and thermodynamic stability (ΔGmix = -3.0) of physiologically relevant S. aureus membrane mimics at pH 6. On the basis of theoretical analysis, this mechanism might involve the use of a tilted peptide structure, and efficacy was noted to vary inversely with the Lys-PG content of S. aureus membrane mimics for each pH studied (R(2) ∼ 0.97), which led to the suggestion that under biologically relevant conditions, low pH helps mediate Lys-PG-induced resistance in S. aureus to MH5 antibacterial action. The peptide showed a lack of hemolytic activity (<2% hemolysis) and merits further investigation as a potential template for development as an antistaphylococcal agent in medically and biotechnically relevant areas.
Collapse
Affiliation(s)
- Sarah R Dennison
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire , Preston PR1 2HE, U.K
| | - Leslie Hg Morton
- School of Forensic and Investigative Science, University of Central Lancashire , Preston PR1 2HE, U.K
| | - Frederick Harris
- School of Forensic and Investigative Science, University of Central Lancashire , Preston PR1 2HE, U.K
| | - David A Phoenix
- School of Applied Science, London South Bank University , 103 Borough Road, London SE1 0AA, U.K
| |
Collapse
|
33
|
Mura M, Wang J, Zhou Y, Pinna M, Zvelindovsky AV, Dennison SR, Phoenix DA. The effect of amidation on the behaviour of antimicrobial peptides. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2016; 45:195-207. [PMID: 26745958 PMCID: PMC4796345 DOI: 10.1007/s00249-015-1094-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 10/15/2015] [Accepted: 10/20/2015] [Indexed: 12/02/2022]
Abstract
Aurein 2.6-COOH and aurein 3.1-COOH were studied along with their naturally occurring C-terminally amidated analogues. Circular dichroism (CD) and molecular dynamic (MD) simulations were used to study the effects of amidation on the interaction of antimicrobial peptides (AMPs) with lipid bilayers. CD measurements and MD analysis suggested that both peptide analogues were predominantly random coil and adopted low levels of \documentclass[12pt]{minimal}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage{mathrsfs}
\usepackage{upgreek}
\setlength{\oddsidemargin}{-69pt}
\begin{document}$$\alpha$$\end{document}α-helical structure in solution (<30 %) and in the presence of a lipid bilayer the peptides formed a stable \documentclass[12pt]{minimal}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage{mathrsfs}
\usepackage{upgreek}
\setlength{\oddsidemargin}{-69pt}
\begin{document}$$\alpha$$\end{document}α-helical structure. In general, amidated analogues have a greater propensity than the non-amidated peptides to form a \documentclass[12pt]{minimal}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage{mathrsfs}
\usepackage{upgreek}
\setlength{\oddsidemargin}{-69pt}
\begin{document}$$\alpha$$\end{document}α-helical structure. MD simulations predicted that aurein 2.6-COOH and aurein 3.1-CHOOH destabilised lipid bilayers from 1,2-dimyristoyl-sn-glycero-3-phosphocholine and 1,2-dimyristoyl-sn-glycero-3-phosphoserine via angled bilayer penetration. They also showed that aurein 2.6-CONH\documentclass[12pt]{minimal}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage{mathrsfs}
\usepackage{upgreek}
\setlength{\oddsidemargin}{-69pt}
\begin{document}$$_2$$\end{document}2 and aurein 3.1-CONH\documentclass[12pt]{minimal}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage{mathrsfs}
\usepackage{upgreek}
\setlength{\oddsidemargin}{-69pt}
\begin{document}$$_2$$\end{document}2 formed a helix horizontal to the plane of an asymmetric interface.
Collapse
Affiliation(s)
- Manuela Mura
- Computational Physics Group, School of Mathematics and Physics, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS, UK.
| | - Jianping Wang
- UCLan Biomedical Technology Limited (Shenzhen), Shenzhen Virtual University Park, Shenzhen, 518057, People's Republic of China
| | - Yuhua Zhou
- UCLan Biomedical Technology Limited (Shenzhen), Shenzhen Virtual University Park, Shenzhen, 518057, People's Republic of China
| | - Marco Pinna
- Computational Physics Group, School of Mathematics and Physics, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS, UK
| | - Andrei V Zvelindovsky
- Computational Physics Group, School of Mathematics and Physics, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS, UK
| | - Sarah R Dennison
- School of Pharmacy and Biomedical Science, University of Central Lancashire, Preston, PR1 2HE, UK
- School of Applied Science, London South Bank University, 103 Borough Road, London, SE1 0AA, UK
| | - David A Phoenix
- School of Applied Science, London South Bank University, 103 Borough Road, London, SE1 0AA, UK
| |
Collapse
|
34
|
Shahmiri M, Enciso M, Mechler A. Controls and constrains of the membrane disrupting action of Aurein 1.2. Sci Rep 2015; 5:16378. [PMID: 26574052 PMCID: PMC4648102 DOI: 10.1038/srep16378] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 10/13/2015] [Indexed: 11/21/2022] Open
Abstract
Aurein 1.2 is a 13 residue antimicrobial peptide secreted by the Australian tree frog Litoria Aurea. It is a surface-acting membrane disrupting peptide that permeabilizes bacterial membranes via the carpet mechanism; the molecular details of this process are mostly unknown. Here the mechanism of action of Aurein 1.2 was investigated with an emphasis on the role of membrane charge and C-terminal amidation of the peptide. Using quartz crystal microbalance (QCM) fingerprinting it was found that the membrane charge correlates with membrane affinity of the peptide, however the binding and the membrane disrupting processes are not charge driven; increased membrane charge reduces the membrane disrupting activity. Coarse grain simulations revealed that phenylalanine residues act as membrane anchors. Accordingly Aurein 1.2 has the ability to bind to any membrane. Furthermore, bundling precludes membrane disruption in case of wild type peptides, while non C-terminal amidated peptides form random aggregates leading to detachment from the membrane. Hence C-terminal amidation is crucial for Aurein 1.2 action. Our results suggest that Aurein 1.2 acts via aggregation driven membrane penetration. The concomitant change in the tension of the outer leaflet imposes a spontaneous curvature on the membrane, leading to disintegration.
Collapse
Affiliation(s)
- Mahdi Shahmiri
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora Vic 3086, Australia
| | - Marta Enciso
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora Vic 3086, Australia
| | - Adam Mechler
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora Vic 3086, Australia
| |
Collapse
|
35
|
Liao YY, Zuo YH, Tsai CL, Hsu CM, Chen ME. cDNA CLONING AND TRANSCRIPTIONAL REGULATION OF THE CECROPIN AND ATTACIN FROM THE ORIENTAL FRUIT FLY, Bactrocera dorsalis (DIPTERA: TEPHRITIDAE). ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2015; 89:111-126. [PMID: 25781309 DOI: 10.1002/arch.21230] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We described the cDNA cloning of two antimicrobial peptides (AMPs), cecropin (BdCec), and attacin C (BdAttC), from the oriental fruit fly, Bactrocera dorsalis (Hendel), a serious insect pest of fruit trees. Using rapid amplification of cDNA ends, fragments encompassing the entire open reading frames of BdCec and BdAttC were cloned and sequenced. The complete 425 bp cDNA of BdCec encodes a protein of 64 amino acids with a predicted molecular weight of 6.84 kDa. The 931 bp cDNA of BdAttC encodes a protein of 239 residues with a predicted molecular weight of 24.97 kDa. Real-time quantitative RT-PCR demonstrated that the developmental transcription profiles of BdCec and BdAttC were similar in each larvae, pupae, and adults. The constitutive expression levels of both AMPs were high in the first-instar and late third-instar larvae, suggesting that their antimicrobial activity is active in the newly hatched larvae and just before pupation. The basal expression levels were not significant different in adult fat bodies. The expression of BdCec and BdAttC was upregulated after bacterial challenge in adult fat bodies. The ratio of inducible expression to constitutive expression was lower in males compared to females.
Collapse
Affiliation(s)
- Yin-Yin Liao
- Department of Entomology, National Chung Hsing University, Taichung, Taiwan
| | - Yu-Han Zuo
- Department of Entomology, National Chung Hsing University, Taichung, Taiwan
| | - Cheng-Lung Tsai
- Department of Entomology, National Chung Hsing University, Taichung, Taiwan
| | - Chia-Ming Hsu
- Bachelor Program of Biotechnology, National Chung Hsing University, Taichung, Taiwan
| | - Mei-Er Chen
- Department of Entomology, National Chung Hsing University, Taichung, Taiwan
| |
Collapse
|
36
|
Dennison SR, Mura M, Harris F, Morton LHG, Zvelindovsky A, Phoenix DA. The role of C-terminal amidation in the membrane interactions of the anionic antimicrobial peptide, maximin H5. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:1111-8. [PMID: 25640709 DOI: 10.1016/j.bbamem.2015.01.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 01/02/2015] [Accepted: 01/21/2015] [Indexed: 10/24/2022]
Abstract
Maximin H5 is an anionic antimicrobial peptide from amphibians, which carries a C-terminal amide moiety, and was found to be moderately haemolytic (20%). The α-helicity of the peptide was 42% in the presence of lipid mimics of erythrocyte membranes and was found able to penetrate (10.8 mN m(-1)) and lyse these model membranes (64 %). In contrast, the deaminated peptide exhibited lower levels of haemolysis (12%) and α-helicity (16%) along with a reduced ability to penetrate (7.8 m Nm(-1)) and lyse (55%) lipid mimics of erythrocyte membranes. Taken with molecular dynamic simulations and theoretical analysis, these data suggest that native maximin H5 primarily exerts its haemolytic action via the formation of an oblique orientated α-helical structure and tilted membrane insertion. However, the C-terminal deamination of maximin H5 induces a loss of tilted α-helical structure, which abolishes the ability of the peptide's N-terminal and C-terminal regions to H-bond and leads to a loss in haemolytic ability. Taken in combination, these observations strongly suggest that the C-terminal amide moiety carried by maximin H5 is required to stabilise the adoption of membrane interactive tilted structure by the peptide. Consistent with previous reports, these data show that the efficacy of interaction and specificity of maximin H5 for membranes can be attenuated by sequence modification and may assist in the development of variants of the peptide with the potential to serve as anti-infectives.
Collapse
Affiliation(s)
- Sarah R Dennison
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston PR1 2HE, UK; School of Applied Science, London South Bank University, 103 Borough Road, London SE1 0AA, UK
| | - Manuela Mura
- School of Computing Engineering and Physical Science, University of Central Lancashire, Preston PR1 2HE, UK
| | - Frederick Harris
- School of Applied Science, London South Bank University, 103 Borough Road, London SE1 0AA, UK; School of Forensic and Investigative Science, University of Central Lancashire, Preston PR1 2HE, UK
| | - Leslie H G Morton
- School of Forensic and Investigative Science, University of Central Lancashire, Preston PR1 2HE, UK
| | - Andrei Zvelindovsky
- School of Mathematics and Physics, University of Lincoln, Lincolnshire LN6 7TS, UK
| | - David A Phoenix
- School of Applied Science, London South Bank University, 103 Borough Road, London SE1 0AA, UK; School of Forensic and Investigative Science, University of Central Lancashire, Preston PR1 2HE, UK.
| |
Collapse
|
37
|
Galatola R, Cruz A, Gómara MJ, Prat J, Alsina MA, Haro I, Pujol M. Surface behavior of peptides from E1 GBV-C protein: Interaction with anionic model membranes and importance in HIV-1 FP inhibition. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1848:392-407. [PMID: 25450346 DOI: 10.1016/j.bbamem.2014.10.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Revised: 10/20/2014] [Accepted: 10/21/2014] [Indexed: 11/25/2022]
Abstract
The interaction between a peptide sequence from GB virus C E1 protein (E1P8) and its structural analogs (E1P8-12), (E1P8-13), and (E1P8-21) with anionic lipid membranes (POPG vesicles and POPG, DPPG or DPPC/DPPG (2:1) monolayers) and their association with HIV-1 fusion peptide (HIV-1 FP) inhibition at the membrane level were studied using biophysical methods. All peptides showed surface activity but leakage experiments in vesicles as well as insertion kinetics in monolayers and lipid/peptide miscibility indicated a low level of interaction: neither E1P8 nor its analogs induced the release of vesicular content and the exclusion pressure values (πe) were clearly lower than the biological membrane pressure (24-30 mN m(-1)) and the HIV-1 FP (35 mN m(-1)). Miscibility was elucidated in terms of the additivity rule and excess free energy of mixing (GE). E1P8, E1P8-12 and E1P8-21 (but not E1P8-13) induced expansion of the POPG monolayer. The mixing process is not thermodynamically favored as the positive GE values indicate. To determine how E1 peptides interfere in the action of HIV-1 FP at the membrane level, mixed monolayers of HIV-1 FP/E1 peptides (2:1) and POPG were obtained. E1P8 and its derivative E1P8-21 showed the greatest HIV-1 FP inhibition. The LC-LE phase lipid behavior was morphologically examined via fluorescence microscopy (FM) and atomic force microscopy (AFM). Images revealed that the E1 peptides modify HIV-1 FP-lipid interaction. This fact may be attributed to a peptide/peptide interaction as indicated by AFM results. Finally, hemolysis assay demonstrated that E1 peptides inhibit HIV-1 FP activity.
Collapse
Affiliation(s)
- R Galatola
- Unit of Synthesis and Biomedical Application of Peptides, Department of Biomedical Chemistry, IQAC-CSIC, Jordi Girona 18, 08034, Barcelona, Spain
| | - A Cruz
- Dept. de Bioquímica y Biología Molecular I, Facultad de Biología, Universidad Complutense, 28040 Madrid, Spain
| | - M J Gómara
- Unit of Synthesis and Biomedical Application of Peptides, Department of Biomedical Chemistry, IQAC-CSIC, Jordi Girona 18, 08034, Barcelona, Spain
| | - J Prat
- Physical Chemistry Department, Faculty of Pharmacy, University of Barcelona, CSIC-Associated Unit: Peptides and Proteins: Physicochemical Studies, IN2UB Av. Joan XXIII s/n, 08028 Barcelona, Spain; Unit of Synthesis and Biomedical Application of Peptides, Department of Biomedical Chemistry, IQAC-CSIC, Jordi Girona 18, 08034, Barcelona, Spain
| | - M A Alsina
- Physical Chemistry Department, Faculty of Pharmacy, University of Barcelona, CSIC-Associated Unit: Peptides and Proteins: Physicochemical Studies, IN2UB Av. Joan XXIII s/n, 08028 Barcelona, Spain
| | - I Haro
- Unit of Synthesis and Biomedical Application of Peptides, Department of Biomedical Chemistry, IQAC-CSIC, Jordi Girona 18, 08034, Barcelona, Spain
| | - M Pujol
- Physical Chemistry Department, Faculty of Pharmacy, University of Barcelona, CSIC-Associated Unit: Peptides and Proteins: Physicochemical Studies, IN2UB Av. Joan XXIII s/n, 08028 Barcelona, Spain.
| |
Collapse
|
38
|
The effects of the C-terminal amidation of mastoparans on their biological actions and interactions with membrane-mimetic systems. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:2357-68. [DOI: 10.1016/j.bbamem.2014.06.012] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 06/10/2014] [Accepted: 06/13/2014] [Indexed: 11/20/2022]
|
39
|
Lin YC, Hiss JA, Schneider P, Thelesklaf P, Lim YF, Pillong M, Koehler FM, Dittrich PS, Halin C, Wessler S, Schneider G. Piloting the membranolytic activities of peptides with a self-organizing map. Chembiochem 2014; 15:2225-31. [PMID: 25204788 DOI: 10.1002/cbic.201402231] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Indexed: 01/01/2023]
Abstract
Antimicrobial peptides (AMPs) show remarkable selectivity toward lipid membranes and possess promising antibiotic potential. Their modes of action are diverse and not fully understood, and innovative peptide design strategies are needed to generate AMPs with improved properties. We present a de novo peptide design approach that resulted in new AMPs possessing low-nanomolar membranolytic activities. Thermal analysis revealed an entropy-driven mechanism of action. The study demonstrates sustained potential of advanced computational methods for designing peptides with the desired activity.
Collapse
Affiliation(s)
- Yen-Chu Lin
- Swiss Federal Institute of Technology (ETH), Department of Chemistry and Applied Biosciences, Vladimir-Prelog-Weg 4, 8093 Zürich (Switzerland)
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Dennison SR, Phoenix DA. Susceptibility of sheep, human, and pig erythrocytes to haemolysis by the antimicrobial peptide Modelin 5. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2014; 43:423-32. [DOI: 10.1007/s00249-014-0974-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 06/02/2014] [Accepted: 07/01/2014] [Indexed: 11/29/2022]
|
41
|
Lhor M, Bernier SC, Horchani H, Bussières S, Cantin L, Desbat B, Salesse C. Comparison between the behavior of different hydrophobic peptides allowing membrane anchoring of proteins. Adv Colloid Interface Sci 2014; 207:223-39. [PMID: 24560216 PMCID: PMC4028306 DOI: 10.1016/j.cis.2014.01.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 01/11/2014] [Accepted: 01/13/2014] [Indexed: 10/25/2022]
Abstract
Membrane binding of proteins such as short chain dehydrogenase reductases or tail-anchored proteins relies on their N- and/or C-terminal hydrophobic transmembrane segment. In this review, we propose guidelines to characterize such hydrophobic peptide segments using spectroscopic and biophysical measurements. The secondary structure content of the C-terminal peptides of retinol dehydrogenase 8, RGS9-1 anchor protein, lecithin retinol acyl transferase, and of the N-terminal peptide of retinol dehydrogenase 11 has been deduced by prediction tools from their primary sequence as well as by using infrared or circular dichroism analyses. Depending on the solvent and the solubilization method, significant structural differences were observed, often involving α-helices. The helical structure of these peptides was found to be consistent with their presumed membrane binding. Langmuir monolayers have been used as membrane models to study lipid-peptide interactions. The values of maximum insertion pressure obtained for all peptides using a monolayer of 1,2-dioleoyl-sn-glycero-3-phospho-ethanolamine (DOPE) are larger than the estimated lateral pressure of membranes, thus suggesting that they bind membranes. Polarization modulation infrared reflection absorption spectroscopy has been used to determine the structure and orientation of these peptides in the absence and in the presence of a DOPE monolayer. This lipid induced an increase or a decrease in the organization of the peptide secondary structure. Further measurements are necessary using other lipids to better understand the membrane interactions of these peptides.
Collapse
Affiliation(s)
- Mustapha Lhor
- CUO-Recherche, Centre de recherche du CHU de Québec, Hôpital du Saint-Sacrement, Département d'ophtalmologie, Faculté de médecine, Université Laval, Québec, Québec G1V 0A6, Canada; Regroupement stratégique PROTEO, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Sarah C Bernier
- CUO-Recherche, Centre de recherche du CHU de Québec, Hôpital du Saint-Sacrement, Département d'ophtalmologie, Faculté de médecine, Université Laval, Québec, Québec G1V 0A6, Canada; Regroupement stratégique PROTEO, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Habib Horchani
- CUO-Recherche, Centre de recherche du CHU de Québec, Hôpital du Saint-Sacrement, Département d'ophtalmologie, Faculté de médecine, Université Laval, Québec, Québec G1V 0A6, Canada; Regroupement stratégique PROTEO, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Sylvain Bussières
- CUO-Recherche, Centre de recherche du CHU de Québec, Hôpital du Saint-Sacrement, Département d'ophtalmologie, Faculté de médecine, Université Laval, Québec, Québec G1V 0A6, Canada; Regroupement stratégique PROTEO, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Line Cantin
- CUO-Recherche, Centre de recherche du CHU de Québec, Hôpital du Saint-Sacrement, Département d'ophtalmologie, Faculté de médecine, Université Laval, Québec, Québec G1V 0A6, Canada; Regroupement stratégique PROTEO, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Bernard Desbat
- CBMN-UMR 5248 CNRS, Université de Bordeaux, IPB, Allée Geoffroy Saint Hilaire, 33600 Pessac, France
| | - Christian Salesse
- CUO-Recherche, Centre de recherche du CHU de Québec, Hôpital du Saint-Sacrement, Département d'ophtalmologie, Faculté de médecine, Université Laval, Québec, Québec G1V 0A6, Canada; Regroupement stratégique PROTEO, Université Laval, Québec, Québec G1V 0A6, Canada.
| |
Collapse
|
42
|
The interaction of aurein 2.5 with fungal membranes. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2014; 43:255-64. [PMID: 24728560 DOI: 10.1007/s00249-014-0959-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/21/2014] [Accepted: 03/31/2014] [Indexed: 12/27/2022]
Abstract
Aurein 2.5 (GLFDIVKKVVGAFGSL-NH2) is an antimicrobial peptide, which was seen to have activity against Stachybotris chartarum, Penicillium roseopurpureum and Aspergillus flavus with minimum fungicidal concentrations in the range 250-500 μM. S. chartarum showed enhanced susceptibility to lysis as compared to P. roseopurpureum and A. flavus, (44, 26 and 28 % respectively). Monolayers formed from lipid membrane extracts derived from S. chartarum, P. roseopurpureum and A. flavus showed maximal surface pressure changes of 13.5, 10.3 and 10.2 mN m(-1) respectively. However, aurein 2.5 adopted similar levels of α-helical structure (circa 45 %) in the presence of vesicles formed from membrane lipid extracts derived from all three fungi. These data imply that differential activity is not due to targeting and membrane association but linked to the ability of the bound peptide to lyse the cells. At sterol levels mimetic of eukaryotic systems, high levels of α-helical structure (circa 50 %) were also observed and hence similar binding. However, enhanced sterol levels (>0.6) led to a reduction in monolayer membrane interaction, suggesting that the sterols influence efficacy. Consistent with this suggestion, thermodynamic analysis showed that the peptide was able to destabilise model fungal monolayers, as indicated by negative values of ∆Gmix.
Collapse
|
43
|
Seo JK, Lee MJ, Jung HG, Go HJ, Kim YJ, Park NG. Antimicrobial function of SHβAP, a novel hemoglobin β chain-related antimicrobial peptide, isolated from the liver of skipjack tuna, Katsuwonus pelamis. FISH & SHELLFISH IMMUNOLOGY 2014; 37:173-183. [PMID: 24495783 DOI: 10.1016/j.fsi.2014.01.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Revised: 01/24/2014] [Accepted: 01/26/2014] [Indexed: 06/03/2023]
Abstract
A 2.3 kDa of antimicrobial peptide was purified from an acidified liver extract of skipjack tuna, Katsuwonus pelamis, by preparative acid-urea-polyacrylamide gel electrophoresis and C18 reversed-phase HPLC. A comparison of the amino acid sequence of the purified peptide with those of other known polypeptides revealed high homology with the C-terminus of hemoglobin β-chain; thus, this peptide was designated as the Skipjack Hemoglobin β chain-related Antimicrobial Peptide (SHβAP). SHβAP showed potent antimicrobial activity against Gram-positive bacteria, such as Bacillus subtilis, Staphylococcus aureus, and Streptococcus iniae (minimal effective concentrations [MECs], 6.5-57.0 μg/mL), Gram-negative bacteria, such as Escherichia coli D31, Pseudomonas aeruginosa, Salmonella enterica, Shigella sonnei, and two Vibrio parahaemolyticus species (MECs, 2.0-19.0 μg/mL), and against Candida albicans (MEC; 12.0 μg/mL) without significant hemolytic activity. Antimicrobial activity of this peptide was heatstable and pH resistant but is sensitive to proteases and salt. SHβAP did not show membrane permeabilization and killing ability. The secondary structural prediction and the homology modeling expected that this peptide formed an amphipathic α-helical structure. This is the first report the purification of a novel antimicrobial peptide related to the C-terminus of hemoglobin β-chain from marine fish.
Collapse
Affiliation(s)
- Jung-Kil Seo
- Department of Food Science and Biotechnology, Kunsan National University, Kunsan 573-701, Republic of Korea
| | - Min Jeong Lee
- Department of Biotechnology, Pukyong National University, Busan 608-737, Republic of Korea
| | - Hyun-Gyo Jung
- Department of Biotechnology, Pukyong National University, Busan 608-737, Republic of Korea
| | - Hye-Jin Go
- Department of Biotechnology, Pukyong National University, Busan 608-737, Republic of Korea
| | - Young Ja Kim
- Korea Environmental Industry and Technology Institute, Seoul 122-706, Republic of Korea
| | - Nam Gyu Park
- Department of Biotechnology, Pukyong National University, Busan 608-737, Republic of Korea.
| |
Collapse
|
44
|
Shabanpoor F, Bathgate RAD, Wade JD, Hossain MA. C-terminus of the B-chain of relaxin-3 is important for receptor activity. PLoS One 2013; 8:e82567. [PMID: 24349312 PMCID: PMC3859608 DOI: 10.1371/journal.pone.0082567] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 10/24/2013] [Indexed: 01/23/2023] Open
Abstract
Human relaxin-3 is a neuropeptide that is structurally similar to human insulin with two chains (A and B) connected by three disulfide bonds. It is expressed primarily in the brain and has modulatory roles in stress and anxiety, feeding and metabolism, and arousal and behavioural activation. Structure-activity relationship studies have shown that relaxin-3 interacts with its cognate receptor RXFP3 primarily through its B-chain and that its A-chain does not have any functional role. In this study, we have investigated the effect of modification of the B-chain C-terminus on the binding and activity of the peptide. We have chemically synthesised and characterized H3 relaxin as C-termini acid (both A and B chains having free C-termini; native form) and amide forms (both chains’ C-termini were amidated). We have confirmed that the acid form of the peptide is more potent than its amide form at both RXFP3 and RXFP4 receptors. We further investigated the effects of amidation at the C-terminus of individual chains. We report here for the first time that amidation at the C-terminus of the B-chain of H3 relaxin leads to significant drop in the binding and activity of the peptide at RXFP3/RXFP4 receptors. However, modification of the A-chain C-terminus does not have any effect on the activity. We have confirmed using circular dichroism spectroscopy that there is no secondary structural change between the acid and amide form of the peptide, and it is likely that it is the local C-terminal carboxyl group orientation that is crucial for interacting with the receptors.
Collapse
Affiliation(s)
- Fazel Shabanpoor
- Florey Institute for Neuroscience & Mental Health, University of Melbourne, Melbourne, Victoria, Australia
- School of Chemistry, University of Melbourne, Melbourne, Victoria, Australia
| | - Ross A. D. Bathgate
- Florey Institute for Neuroscience & Mental Health, University of Melbourne, Melbourne, Victoria, Australia
- Florey Department of Neuroscience and Mental Health, University of Melbourne, Melbourne, Victoria, Australia
- Department of Biochemistry and Molecular Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - John D. Wade
- Florey Institute for Neuroscience & Mental Health, University of Melbourne, Melbourne, Victoria, Australia
- School of Chemistry, University of Melbourne, Melbourne, Victoria, Australia
- Florey Department of Neuroscience and Mental Health, University of Melbourne, Melbourne, Victoria, Australia
- * E-mail: (MAH); (JDW)
| | - Mohammed Akhter Hossain
- Florey Institute for Neuroscience & Mental Health, University of Melbourne, Melbourne, Victoria, Australia
- School of Chemistry, University of Melbourne, Melbourne, Victoria, Australia
- Florey Department of Neuroscience and Mental Health, University of Melbourne, Melbourne, Victoria, Australia
- * E-mail: (MAH); (JDW)
| |
Collapse
|
45
|
Characterization of Antimicrobial Peptides toward the Development of Novel Antibiotics. Pharmaceuticals (Basel) 2013; 6:1055-81. [PMID: 24276381 PMCID: PMC3817730 DOI: 10.3390/ph6081055] [Citation(s) in RCA: 178] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 08/02/2013] [Accepted: 08/16/2013] [Indexed: 12/18/2022] Open
Abstract
Antimicrobial agents have eradicated many infectious diseases and significantly improved our living environment. However, abuse of antimicrobial agents has accelerated the emergence of multidrug-resistant microorganisms, and there is an urgent need for novel antibiotics. Antimicrobial peptides (AMPs) have attracted attention as a novel class of antimicrobial agents because AMPs efficiently kill a wide range of species, including bacteria, fungi, and viruses, via a novel mechanism of action. In addition, they are effective against pathogens that are resistant to almost all conventional antibiotics. AMPs have promising properties; they directly disrupt the functions of cellular membranes and nucleic acids, and the rate of appearance of AMP-resistant strains is very low. However, as pharmaceuticals, AMPs exhibit unfavorable properties, such as instability, hemolytic activity, high cost of production, salt sensitivity, and a broad spectrum of activity. Therefore, it is vital to improve these properties to develop novel AMP treatments. Here, we have reviewed the basic biochemical properties of AMPs and the recent strategies used to modulate these properties of AMPs to enhance their safety.
Collapse
|
46
|
Cui W, Niu S, Zheng L, Hu L, Huang T, Gu L, Feng K, Zhang N, Cai Y, Li Y. Prediction of protein amidation sites by feature selection and analysis. Mol Genet Genomics 2013; 288:391-400. [DOI: 10.1007/s00438-013-0760-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Accepted: 06/10/2013] [Indexed: 11/25/2022]
|
47
|
Alay M, Haro I, Alsina MA, Girona V, Prat J, Busquets MA. Interaction of two overlapped synthetic peptides from GB virus C with charged mono and bilayers. Colloids Surf B Biointerfaces 2013; 105:7-13. [PMID: 23352943 DOI: 10.1016/j.colsurfb.2012.11.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 11/09/2012] [Accepted: 11/26/2012] [Indexed: 11/19/2022]
Abstract
The physical chemistry properties and interactions of E2 (125-139) and E2 (120-139) peptide sequences from GB virus C with model cell membranes were investigated by means of several biophysical techniques in order to gain better understanding of the effect of peptide length and lipid charge on membrane binding. The peptides, having one net negative charge at the pH of the assays, interacted with monolayers of all the phospholipids regardless of the charge but with more extent with the cationic DPTAP thus indicating that the interaction had both a hydrophobic and an electrostatic component as has been observed for other peptides of the same family. The peptides were able to leakage contents of liposomes and showed fluorescence energy transfer in vesicles depending on the vesicles lipid composition. On another hand, circular dichroism has shown that the peptides exist mainly as a mixture of disordered structure and β-type conformations in aqueous solution but diminished its unstructured content, folding preferentially into α-helical conformation upon interaction with hydrophobic solvents or positively charged lipid surfaces. Altogether, results of this work indicate that the peptides interact at a surface level, penetrate into bilayers composed of fluid lipids and that conformational changes could be responsible for this effect.
Collapse
Affiliation(s)
- M Alay
- Department of Physical Chemistry, Associated Unit to the CSIC, IN2UB, Faculty of Pharmacy, Barcelona, Spain
| | | | | | | | | | | |
Collapse
|
48
|
Synthetic oligoureas of metaphenylenediamine mimic host defence peptides in their antimicrobial behaviour. Bioorg Med Chem Lett 2013; 23:2518-21. [DOI: 10.1016/j.bmcl.2013.03.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 03/01/2013] [Accepted: 03/04/2013] [Indexed: 11/21/2022]
|
49
|
Seo JK, Lee MJ, Go HJ, Park TH, Park NG. Purification and characterization of YFGAP, a GAPDH-related novel antimicrobial peptide, from the skin of yellowfin tuna, Thunnus albacares. FISH & SHELLFISH IMMUNOLOGY 2012; 33:743-752. [PMID: 22771964 DOI: 10.1016/j.fsi.2012.06.023] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 05/18/2012] [Accepted: 06/20/2012] [Indexed: 06/01/2023]
Abstract
A 3.4 kDa of antimicrobial peptide was purified from an acidified skin extract of the yellowfin tuna, Thunnus albacares, by preparative acid-urea-polyacrylamide gel electrophoresis and C(18) reversed-phase HPLC. A comparison of the N-terminal amino acid sequence of the purified peptide with that of other known polypeptides revealed high homology with the N-terminus of glyceraldehyde-3-phosphate dehydrogenase (GAPDH); thus, this peptide was designated as the yellowfin tuna GAPDH-related antimicrobial peptide (YFGAP). YFGAP showed potent antimicrobial activity against Gram-positive bacteria, such as Bacillus subtilis, Micrococcus luteus, and Streptococcus iniae (minimal effective concentrations [MECs], 1.2-17.0 μg/mL), and Gram-negative bacteria, such as Aeromonas hydrophila, Escherichia coli D31, and Vibrio parahaemolyticus (MECs, 3.1-12.0 μg/mL) without significant hemolytic activity. According to the secondary structural prediction and the homology modeling, this peptide forms an amphipathic structure and consists of three secondary structural motifs including one α-helix and two parallel β-strands. This peptide did not show membrane permeabilization ability and its activity was bacteriostatic rather than bactericidal. This is the first report of the isolation of an antimicrobial peptide from a tuna species and the first description of the antimicrobial function of the N-terminus of GAPDH of an animal species.
Collapse
Affiliation(s)
- Jung-Kil Seo
- Department of Biotechnology, Pukyong National University, Daeyeon Campus, Yongso-ro, Nam-Gu, Busan 608-737, Republic of Korea
| | | | | | | | | |
Collapse
|
50
|
Joshi S, Bisht GS, Rawat DS, Maiti S, Pasha S. Comparative mode of action of novel hybrid peptide CS-1a and its rearranged amphipathic analogue CS-2a. FEBS J 2012; 279:3776-90. [DOI: 10.1111/j.1742-4658.2012.08738.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 07/30/2012] [Accepted: 08/06/2012] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Souvik Maiti
- Proteomics and Structural Biology Unit; Institute of Genomics & Integrative Biology; Delhi; India
| | - Santosh Pasha
- Peptide Research Laboratory; Institute of Genomics & Integrative Biology; Delhi; India
| |
Collapse
|